Page 1
The best Service Manuals have been CycleHippied! Over 30 Years of Powersports Industy Experience goes into the arrangement of the official Yamaha Factory Service Data. If you obtained this manual from a source other than CycleHippie, It may not have been properly CycleHippied!
Page 4
If there is any question about a service procedure, it is imperative that you contact a Yamaha dealer for any service information changes that apply to this model. This policy is intended to provide the customer with the most satisfaction from his vehicle and to conform to federal environmental quality objectives.
EAS20090 HOW TO USE THIS MANUAL This manual is intended as a handy, easy-to-read reference book for the mechanic. Comprehensive explanations of all installation, removal, disassembly, assembly, repair and check procedures are laid out with the individual steps in sequential order. •...
EAS20100 1. Serviceable with engine mounted SYMBOLS 2. Filling fluid The following symbols are used in this manual 3. Lubricant for easier understanding. 4. Special tool NOTE: 5. Tightening torque The following symbols are not relevant to every 6. Wear limit, clearance vehicle.
EAS20110 TABLE OF CONTENTS GENERAL INFORMATION SPECIFICATIONS PERIODIC CHECKS AND ADJUSTMENTS CHASSIS ENGINE FUEL SYSTEM ELECTRICAL SYSTEM TROUBLESHOOTING...
GENERAL INFORMATION IDENTIFICATION .................... 1-1 VEHICLE IDENTIFICATION NUMBER............. 1-1 MODEL LABEL ..................1-1 FEATURES ..................... 1-2 OUTLINE OF THE FI SYSTEM..............1-2 FI SYSTEM ....................1-3 INSTRUMENT FUNCTIONS..............1-4 IMPORTANT INFORMATION ................. 1-8 PREPARATION FOR REMOVAL AND DISASSEMBLY ......1-8 REPLACEMENT PARTS ................
IDENTIFICATION EAS20130 IDENTIFICATION EAS20140 VEHICLE IDENTIFICATION NUMBER The vehicle identification number “1” is stamped into the right side of the steering head pipe. EAS20150 MODEL LABEL The model label “1” is affixed to the frame under the rider seat. This information will be needed to order spare parts.
FEATURES EAS20170 FEATURES ET1D71017 OUTLINE OF THE FI SYSTEM The main function of a fuel supply system is to provide fuel to the combustion chamber at the optimum air-fuel ratio in accordance with the engine operating conditions and the atmospheric temperature. In the conventional carburetor system, the air-fuel ratio of the mixture that is supplied to the combustion chamber is created by the volume of the intake air and the fuel that is metered by the jet used in the respective carburetor.
FEATURES ET1D71018 FI SYSTEM The fuel pump delivers fuel to the fuel injector via the fuel filter. The pressure regulator maintains the fuel pressure that is applied to the fuel injector at only 392 kPa (3.92 kg/cm², 55.7 psi). Accordingly, when the energizing signal from the ECU energizes the fuel injector, the fuel passage opens, causing the fuel to be injected into the intake manifold only during the time the passage remains open.
FEATURES ET1D71036 INSTRUMENT FUNCTIONS Multi-function meter unit EW1D71008 WARNING Be sure to stop the vehicle before making any setting changes to the multi-function meter unit. 1. Speedometer 2. Fuel gauge 1. “SELECT” switch 3. Odometer/tripmeter/fuel reserve 2. “RESET” switch tripmeter/clock 4.
Page 15
FEATURES Tachometer • The fuel gauge does not indicate the correct fuel level for the first 5 km/h (3 mi/h) after refu- eling. Odometer, tripmeter, and clock modes 1. Tachometer 2. Tachometer red zone The electric tachometer allows the rider to mon- itor the engine speed and keep it within the ideal 1.
Page 16
FEATURES To set the clock: Select the brightness control mode as follows. 1. Push the “SELECT” switch to change the dis- 1. Turn the key to “OFF”. play to the clock mode. 2. Push and hold the “SELECT” switch. 2. Push the “SELECT” and “RESET” switches 3.
Page 17
FEATURES 1. Speedometer needle 2. Tachometer needle 3. Fuel gauge needle 4. Item number 5. Brightness level 7. Push the “SELECT” switch. The odometer/tripmeter/clock display will re- turn to the prior mode.
5. Keep all parts away from any source of fire. EAS20200 REPLACEMENT PARTS Use only genuine Yamaha parts for all replace- ments. Use oil and grease recommended by Yamaha for all lubrication jobs. Other brands may be similar in function and appearance, but...
IMPORTANT INFORMATION EAS20230 BEARINGS AND OIL SEALS Install bearings and oil seals so that the manu- facturer’s marks or numbers are visible. When installing oil seals “1”, lubricate the oil seal lips with a light coat of lithium-soap-based grease. Oil bearings liberally when installing, if appropri- ate.
CHECKING THE CONNECTIONS EAS20250 CHECKING THE CONNECTIONS Pocket tester 90890-03112 Check the leads, couplers, and connectors for Analog pocket tester stains, rust, moisture, etc. YU-03112-C 1. Disconnect: • Lead NOTE: • Coupler • If there is no continuity, clean the terminals. •...
SPECIAL TOOLS EAS20260 SPECIAL TOOLS The following special tools are necessary for complete and accurate tune-up and assembly. Use only the appropriate special tools as this will help prevent damage caused by the use of inappropriate tools or improvised techniques. Special tools, part numbers or both may differ depending on the country. When placing an order, refer to the list provided below to avoid any mistakes.
ENGINE SPECIFICATIONS EAS20290 ENGINE SPECIFICATIONS Engine Engine type Air cooled 4-stroke, OHV Displacement 1854.0 cm³ Cylinder arrangement V-type 2-cylinder Bore × stroke 100.0 × 118.0 mm (3.94 × 4.65 in) Compression ratio 9.48 :1 Starting system Electric starter Fuel Recommended fuel Premium unleaded gasoline only Fuel tank capacity 17.0 L (4.49 US gal) (3.74 Imp.gal)
Page 29
ENGINE SPECIFICATIONS Inner-rotor-to-outer-rotor-tip clearance Less than 0.12 mm (0.0047 in) Limit 0.20 mm (0.0079 in) Outer-rotor-to-oil-pump-housing clearance 0.10–0.15 mm (0.0039–0.0059 in) Limit 0.22 mm (0.0087 in) Oil-pump-housing-to-inner-and-outer-rotor clearance 0.04–0.09 mm (0.0016–0.0035 in) Limit 0.160 mm (0.0063 in) Spark plug (s) Manufacturer/model NGK/DPR8EA-9 Manufacturer/model...
Page 30
ENGINE SPECIFICATIONS Rocker arm/rocker arm shaft Rocker arm inside diameter 18.000–18.018 mm (0.7087–0.7094 in) Limit 18.036 mm (0.7101 in) Rocker arm shaft outside diameter 17.976–17.991 mm (0.7077–0.7083 in) Rocker-arm-to-rocker-arm-shaft clearance 0.009–0.042 mm (0.0004–0.0017 in) Limit 0.080 mm (0.0032 in) Valve, valve seat, valve guide Valve clearance (cold) Intake 0.00–0.04 mm (0.0000–0.0016 in)
Page 31
ENGINE SPECIFICATIONS Valve guide inside diameter (exhaust) 6.000–6.012 mm (0.2362–0.2367 in) Limit 6.050 mm (0.2382 in) Valve-stem-to-valve-guide clearance (intake) 0.010–0.037 mm (0.0004–0.0015 in) Limit 0.080 mm (0.0032 in) Valve-stem-to-valve-guide clearance (exhaust) 0.025–0.052 mm (0.0010–0.0020 in) Limit 0.100 mm (0.0039 in) Valve stem runout 0.010 mm (0.0004 in) Valve spring...
Page 32
ENGINE SPECIFICATIONS Valve push rod runout 0.3 mm (0.012 in) Cylinder Bore 100.000–100.010 mm (3.9370–3.9374 in) Taper limit 0.050 mm (0.0020 in) Out of round limit 0.050 mm (0.0020 in) Piston Piston-to-cylinder clearance 0.025–0.050 mm (0.0010–0.0020 in) Limit 0.15 mm (0.0059 in) Diameter D 99.960–99.975 mm (3.9354–3.9360 in) Height H...
Page 33
ENGINE SPECIFICATIONS Oil ring Dimensions (B × T) 2.50 × 3.40 mm (0.10 × 0.13 in) End gap (installed) 0.20–0.70 mm (0.0079–0.0276 in) Connecting rod ® Oil clearance (using plastigauge 0.050–0.074 mm (0.0020–0.0029 in) Bearing color code 1.Blue 2.Black 3.Brown 4.Green 5.Yellow Crankshaft Width A 105.80–106.20 mm (4.165–4.181 in)
Page 34
ENGINE SPECIFICATIONS Primary reduction system Spur gear Primary reduction ratio 72/51 (1.412) Secondary reduction system Belt drive Secondary reduction ratio 70/31 (2.258) Operation Left foot operation Gear ratio 38/16 (2.375) 33/21 (1.571) 29/25 (1.160) 26/28 (0.929) 24/30 (0.800) Main axle runout limit 0.08 mm (0.0032 in) Drive axle runout limit 0.08 mm (0.0032 in)
Page 35
ENGINE SPECIFICATIONS Idling condition Engine idling speed 850–950 r/min Intake vacuum 31.3–35.3 kPa (9.3–10.4 inHg) (235–265 mmHg) Oil temperature 80.0–90.0 °C (176.00–194.00 °F) Throttle cable free play 4.0–6.0 mm (0.16–0.24 in)
ELECTRICAL SPECIFICATIONS EAS20310 ELECTRICAL SPECIFICATIONS Voltage System voltage 12 V Ignition system Ignition system Transistorized coil ignition (digital) Advancer type Electrical Ignition timing (B.T.D.C.) 10.0 °/900 r/min Engine control unit Model/manufacturer F008T83271/MITSUBISHI Ignition coil Model/manufacturer 2JN/MORIC Minimum ignition spark gap 6.0 mm (0.24 in) 2.16–2.64 Ω...
Page 40
Built-in, self-canceling device Turn signal blinking frequency 75.0–95.0 cycles/min 21(23) W × 2 + LED × 2 Wattage Fuel gauge Model/manufacturer 1D7/YAMAHA 9–11 Ω Sender unit resistance (full) 213–219 Ω Sender unit resistance (empty) Starting circuit cut-off relay Model/manufacturer G8R-30Y-V3/OMRON 162–198 Ω...
Page 41
ELECTRICAL SPECIFICATIONS Fuel pump relay Model/manufacturer G8R-30Y-V3/OMRON 162–198 Ω Coil resistance Thermo unit Model/manufacturer 5PX/DENSO 898.4–1098.0 Ω Resistance at 100°C Fuses Main fuse 50.0 A Headlight fuse 20.0 A Taillight fuse 10.0 A Signaling system fuse 10.0 A Ignition fuse 25.0 A Auxiliary DC connector fuse 3.0 A...
TIGHTENING TORQUES EAS20320 TIGHTENING TORQUES EAS20330 GENERAL TIGHTENING TORQUE SPECIFICATIONS This chart specifies tightening torques for stan- dard fasteners with a standard ISO thread pitch. Tightening torque specifications for special com- ponents or assemblies are provided for each chapter of this manual. To avoid warpage, tight- en multi-fastener assemblies in a crisscross pat- tern and progressive stages until the specified tightening torque is reached.
LUBRICATION POINTS AND LUBRICANT TYPES EAS20360 LUBRICATION POINTS AND LUBRICANT TYPES EAS20370 ENGINE Lubrication point Lubricant Oil seal lips O-rings Bearings Cylinder head nuts and washers Connecting rod small end and big end Crankshaft journals Piston surfaces Piston pins Connecting rod bolts Balancer idle gear inner surface and balancer idle gear shaft Left balancer driven gear inner surface Right balancer...
Page 54
Transmission gears (wheel and pinion) and collar Drive pulley nut and washer Shift forks and shift fork guide bars Shift drum Shift shaft and shift shaft oil seal Shift fork pawl Yamaha bond No.1215 (Three Bond Crankcase mating surface ® No.1215 Yamaha bond No.1215 (Three Bond...
Page 65
LUBRICATION SYSTEM CHART AND DIAGRAMS 2-39...
Page 66
LUBRICATION SYSTEM CHART AND DIAGRAMS 1. Main axle 2. Drive axle 3. Oil strainer (crankcase) 4. Oil pump A. To the oil filter cartridge 2-40...
Page 67
LUBRICATION SYSTEM CHART AND DIAGRAMS 2-41...
Page 68
LUBRICATION SYSTEM CHART AND DIAGRAMS 1. Oil pipe 5 2. Transfer gear oil pump 3. Oil strainer (transfer gear case) 4. Middle drive shaft 5. Oil strainer (oil tank) A. From the oil pump 2-42...
Page 69
LUBRICATION SYSTEM CHART AND DIAGRAMS 2-43...
Page 70
LUBRICATION SYSTEM CHART AND DIAGRAMS 1. Transfer gear oil pump 2. Middle driven shaft 2-44...
Page 74
CABLE ROUTING 1. Main switch lead 2. Right handlebar switch lead 3. Wire harness 4. Left handlebar switch lead 5. Air temperature sensor lead 6. Front left turn signal/position light lead 7. Headlight lead 8. Front right turn signal/position light lead 9.
Page 76
CABLE ROUTING 1. EXUP servo motor J. Fasten the wire harness and the cylinder-#2 left and right spark plug leads with a plastic locking tie, 2. Fuse box making sure to install the tie just past the end of the 3.
Page 78
CABLE ROUTING 1. Clutch hose K. Fasten the stator coil lead and rectifier/regulator lead with the plastic locking tie. Face the end of the 2. Throttle cable (decelerator cable) plastic locking tie outward, and then cut off the 3. Throttle cable (accelerator cable) excess end of the tie.
Page 80
CABLE ROUTING 1. Meter assembly coupler L. Fasten the air filter case damper with the plastic locking tie so that the rubber part of the damper 2. Cylinder-#2 intake air pressure sensor coupler contacts the frame. Be sure to pass the plastic 3.
Page 82
CABLE ROUTING 1. Fuel tank breather hose Q. Install the fuel hose (fuel tank to fuel hose joint) with its white paint mark facing downward. 2. Fuel sender (fuel tank) R. To the pressure regulator 3. Fuel tank S. Install the air vent hose (fuel hose joint to fuel tank) 4.
PERIODIC CHECKS AND ADJUSTMENTS PERIODIC MAINTENANCE................3-1 INTRODUCTION..................3-1 PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL SYSTEM....................3-1 GENERAL MAINTENANCE AND LUBRICATION CHART....... 3-1 ENGINE ......................3-4 ADJUSTING THE VALVE CLEARANCE ..........3-4 SYNCHRONIZING THE THROTTLE BODIES ......... 3-7 ADJUSTING THE THROTTLE CABLE FREE PLAY ........ 3-8 CHECKING THE SPARK PLUGS.............
Page 89
ELECTRICAL SYSTEM ................3-31 CHECKING AND CHARGING THE BATTERY........3-31 CHECKING THE FUSES ................ 3-31 REPLACING THE HEADLIGHT BULBS ..........3-31 ADJUSTING THE HEADLIGHT BEAMS..........3-32...
√ √ damage. tem (For • Replace if necessary. California only) * Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service. EAU32183 GENERAL MAINTENANCE AND LUBRICATION CHART INITIAL ODOMETER READINGS 8000 mi...
Page 92
Lights, signals • Check operation. √ √ √ √ √ √ 26 * and switches • Adjust headlight beam. * Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.
Page 93
PERIODIC MAINTENANCE NOTE: From 24000 mi (37000 km) or 36 months, repeat the maintenance intervals starting from 8000 mi (13000 km) or 12 months. EAU38440 NOTE: • Air filter • This model’s air filter is equipped with a disposable oil-coated paper element, which must not be cleaned with compressed air to avoid damaging it.
ENGINE EAS20470 • Fuel tank ENGINE Refer to “FUEL TANK” on page 6-1. • Air filter case EAS20530 Refer to “GENERAL CHASSIS” on page 4-1. ADJUSTING THE VALVE CLEARANCE • Muffler The following procedure applies to all of the • Exhaust pipes valves.
Page 95
ENGINE 8. Remove: 11.Measure: • Fuel tank damper “1” • Valve clearance • Cylinder head breather hose “2” Out of specification → Adjust. 9. Disconnect: • Oil tank breather hose “3” Valve clearance (cold) Intake • Fuel outlet hose “4” 0.00–0.04 mm (0.0000–0.0016 in) Exhaust 0.00–0.04 mm (0.0000–0.0016 in)
Page 96
ENGINE Thickness gauge 90890-03180 Feeler gauge set YU-26900-9 L LLL L LLL L LLL L LLL L LLL 12.Adjust: • Valve clearance M MMM M MMM M MMM M MMM M MMM a. Loosen the locknut “1”. d. Measure the valve clearance with a thickness gauge.
ENGINE • Cylinder-#1 ignition coil cover Refer to “ENGINE REMOVAL” on page 5-1. • Fuel tank Refer to “FUEL TANK” on page 6-1. 3. Remove: • Cylinder-#1 intake air pressure sensor brack- et “1” • Cylinder-#2 intake air pressure sensor brack- et “2”...
ENGINE NOTE: The difference in vacuum pressure between two throttle bodies should not exceed 1.33 kPa (10 mmHg). L LLL L LLL L LLL L LLL L LLL 8. Stop the engine and remove the measuring equipment. 9. Adjust: • Throttle cable free play Refer to “ADJUSTING THE THROTTLE CA- 6.
ENGINE M MMM M MMM M MMM M MMM M MMM 4. Check: a. Loosen the locknut “1”. • Spark plug type b. Turn the adjusting nut “2” in direction “a” or “b” Incorrect → Change. until the specified throttle cable free play is obtained.
ENGINE 10.Install: • Air filter case Refer to “GENERAL CHASSIS” on page 4-1. • Fuel tank Refer to “FUEL TANK” on page 6-1. • Rider seat bracket assembly • Rider seat Refer to “GENERAL CHASSIS” on page 4-1. EAS20700 CHECKING THE IGNITION TIMING 5.
ENGINE NOTE: Type Align the mark “a” on the shift pedal shaft with YAMALUBE 4 (20W40) or the slot in the shift pedal. SAE20W40 Recommended engine oil grade API service SG type or higher, JASO standard MA ECA13380 CAUTION: • Engine oil also lubricates the clutch and the wrong oil types or additives could cause clutch slippage.
Page 102
ENGINE c. Tighten the new oil filter cartridge to specifi- 5. Remove: cation with an oil filter wrench. • Engine oil drain bolts (crankcase) “1” (along with the gaskets) Oil filter cartridge 17 Nm (1.7 m·kg, 12 ft·lb) L LLL L LLL L LLL L LLL...
ENGINE EC1D71008 CAUTION: Oil gallery bolt 10 Nm (1.0 m·kg, 7.2 ft·lb) When starting the engine make sure the dip- stick is securely fitted into the oil tank. L LLL L LLL L LLL L LLL L LLL 12.Fill: (when engine is disassembled) EAS20840 •...
ENGINE Transfer gear oil check bolt 8 Nm (0.8 m·kg, 5.8 ft·lb) EAS20850 CHANGING THE TRANSFER GEAR OIL 1. Remove: • Muffler • Exhaust pipes Refer to “ENGINE REMOVAL” on page 5-1. 2. Place a container under the transfer gear oil 8.
ENGINE • Refill with the same type of clutch fluid that is already in the system. Mixing clutch flu- ids may result in a harmful chemical reac- tion, leading to poor clutch performance. • When refilling, be careful that water does not enter the clutch fluid reservoir.
ENGINE EAS21010 CHECKING THE THROTTLE BODY JOINTS The following procedure applies to all of the throttle body joints and intake manifolds. 1. Remove: • Rider seat • Rider seat bracket assembly Refer to “GENERAL CHASSIS” on page 4-1. • Fuel tank Refer to “FUEL TANK”...
ENGINE 3. Install: • Air filter case Refer to “GENERAL CHASSIS” on page 4-1. • Fuel tank Refer to “FUEL TANK” on page 6-1. • Rider seat bracket assembly • Rider seat Refer to “GENERAL CHASSIS” on page 4-1. EAS21060 CHECKING THE OIL TANK BREATHER 3.
ENGINE • Muffler “3” EAS21090 CHECKING THE CANISTER (for California • Muffler bracket “4” only) Cracks/damage → Replace. 1. Remove: • Gaskets “5” • Horn 1 Exhaust gas leaks → Replace. Refer to “THROTTLE BODIES” on page 6-6. 2. Check: 2.
Page 109
ENGINE c. Tighten both locknuts. L LLL L LLL L LLL L LLL L LLL d. Turn the main switch to “ON” and check that 3. Check: the projection “c” on the EXUP valve pulley • EXUP cable free play (at the EXUP valve pul- contacts the stoppers (fully open and fully ley) “a”...
CHASSIS EAS21140 CHASSIS EAS21190 ADJUSTING THE REAR DISC BRAKE 1. Check: • Brake pedal position (distance “a” from the top of the rider footrest to the top of the brake pedal) Out of specification → Adjust. Brake pedal position c. Tighten the locknut. 110.0 mm (4.33 in) EW1D71005 WARNING...
CHASSIS EAS21250 CHECKING THE FRONT BRAKE PADS The following procedure applies to all of the brake pads. 1. Operate the brake. 2. Check: • Front brake pad Wear indicator grooves “1” almost disap- peared → Replace the brake pads as a set. Refer to “FRONT BRAKE”...
CHASSIS EAS21330 ADJUSTING THE REAR BRAKE LIGHT SWITCH NOTE: The rear brake light switch is operated by move- ment of the brake pedal. The rear brake light switch is properly adjusted when the brake light comes on just before the braking effect starts. 1.
CHASSIS NOTE: NOTE: • Be careful not to spill any brake fluid or allow Loosening the bleed screw will release the pres- the brake master cylinder reservoir or brake sure and cause the brake lever to contact the fluid reservoir to overflow. throttle grip or the brake pedal to fully extend.
CHASSIS M MMM M MMM M MMM M MMM M MMM 1. Stand the vehicle on a level surface. a. Loosen both locknuts “1”. EWA13120 WARNING b. Turn the shift rod “2” in direction “a” or “b” until the specified installed shift rod length is ob- Securely support the vehicle so that there is tained.
CHASSIS NOTE: Using the alignment marks on each side of the swingarm, make sure that both belt pullers are in the same position for proper wheel alignment. d. Tighten the locknuts to specification. Locknut (drive belt adjusting bolt) 16 Nm (1.6 m·kg, 11 ft·lb) 3.
CHASSIS 3. Remove: Lower ring nut (final tightening • Upper bracket torque) Refer to “FRONT FORK” on page 4-60. 18 Nm (1.8 m·kg, 13 ft·lb) 4. Adjust: • Steering head d. Check the steering head for looseness or M MMM M MMM M MMM M MMM...
CHASSIS 3. Hold the vehicle upright and apply the front Spring preload adjusting posi- brake. tions 4. Check: Installed spring length • Front fork operation Minimum Push down hard on the handlebar several 162.0 mm (6.38 in) times and check if the front fork rebounds Standard smoothly.
Page 118
CHASSIS EWA13190 WARNING It is dangerous to ride with a worn-out tire. When the tire tread reaches the wear limit, re- place the tire immediately. 2. Check: • Tire surfaces Damage/wear → Replace the tire. Wear limit (front) 1.0 mm (0.04 in) EWA13180 WARNING Wear limit (rear)
WARNING cerning handling characteristics can be giv- en if a tire combination other than one Never attempt to make any repairs to the approved by Yamaha is used on this vehicle. wheel. NOTE: Front tire After a tire or wheel has been changed or re- Size placed, always balance the wheel.
CHASSIS NOTE: Hold the cable end upright and pour a few drops of lubricant into the cable sheath or use a suit- able lubricating device. EAS21700 LUBRICATING THE LEVERS Lubricate the pivoting point and metal-to-metal moving parts of the levers. Recommended lubricant Lithium-soap-based grease EAS21710...
ELECTRICAL SYSTEM EAS21750 5. Replace: ELECTRICAL SYSTEM • Low beam headlight bulb M MMM M MMM M MMM M MMM M MMM EAS21760 a. Disconnect: CHECKING AND CHARGING THE BATTERY • Headlight coupler “1” Refer to “ELECTRICAL COMPONENTS” on b. Remove: page 7-67.
Page 122
ELECTRICAL SYSTEM 7. Install: • Headlight assembly 8. Connect: • Air temperature sensor coupler 9. Install: • Headlight cover Headlight cover bolt 7 Nm (0.7 m·kg, 5.1 ft·lb) 10.Install: b. Disconnect: • Windshield (For XV19CTS(C)/ • Headlight coupler “1” XV19CT(C)/XV19CTM(C)) c.
Page 123
ELECTRICAL SYSTEM L LLL L LLL L LLL L LLL L LLL 3-33...
Page 124
CHASSIS GENERAL CHASSIS ..................4-1 REMOVING THE WINDSHIELD ............... 4-2 ASSEMBLING THE WINDSHIELD ............4-2 INSTALLING THE WINDSHIELD.............. 4-2 REMOVING THE BACKREST ..............4-5 ASSEMBLING THE BACKREST .............. 4-5 INSTALLING THE BACKREST..............4-5 CHECKING THE SIDEBAG BRACKET SPRING NUTS......4-8 FRONT WHEEL ....................
Page 125
REAR BRAKE....................4-43 INTRODUCTION..................4-49 CHECKING THE REAR BRAKE DISC ........... 4-49 REPLACING THE REAR BRAKE PADS ..........4-49 REMOVING THE REAR BRAKE CALIPER ..........4-50 DISASSEMBLING THE REAR BRAKE CALIPER ........4-50 CHECKING THE REAR BRAKE CALIPER..........4-51 ASSEMBLING THE REAR BRAKE CALIPER ........4-51 INSTALLING THE REAR BRAKE CALIPER...........
GENERAL CHASSIS EAS21830 GENERAL CHASSIS Removing the windshield (For XV19CTS(C)/XV19CT(C)/XV19CTM(C)) 23 Nm (2.3 m kg, 17 ft • • 23 Nm (2.3 m kg, 17 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 8 Nm (0.8 m kg, 5.8 ft •...
GENERAL CHASSIS ET1D71039 REMOVING THE WINDSHIELD 1. Remove: • Windshield M MMM M MMM M MMM M MMM M MMM a. Insert the key “1” into the windshield lock, turn it clockwise and then remove the key. ET1D71040 INSTALLING THE WINDSHIELD 1.
Page 129
GENERAL CHASSIS c. Insert the key into the windshield lock, turn it counterclockwise until it stops to lock the fas- tener, and then remove the key. 1. Lock 2. Fastener L LLL L LLL L LLL L LLL L LLL...
Page 130
Sidebag (left and right) tions to clean the leather on the sidebags. Polish the dry leather with a soft cloth, and then treat with Yamaha Mink Oil or another high-quality leather protectant for increased water resistance. Backrest assembly...
GENERAL CHASSIS ET1D71041 NOTE: REMOVING THE BACKREST Align the projection “a” on the lock “1” with the 1. Remove: slot “b” in the left backrest lower bracket “2”. • Backrest M MMM M MMM M MMM M MMM M MMM a.
Page 132
GENERAL CHASSIS b. Push the rear of the backrest down smoothly but forcefully to lock it in place and make sure that the lever hook “1” on each side is secure- ly fit over its holder “2”. EW1D71017 WARNING Both lever hooks must be securely fitted over their holder.
Page 133
GENERAL CHASSIS Removing the sidebag brackets (For XV19CTS(C)/XV19CT(C)/XV19CTM(C)) 48 Nm (4.8 m kg, 35 ft • • 23 Nm (2.3 m kg, 17 ft • • 23 Nm (2.3 m kg, 17 ft • • 48 Nm (4.8 m kg, 35 ft •...
GENERAL CHASSIS ET1D71047 CHECKING THE SIDEBAG BRACKET SPRING NUTS 1. Check: • Sidebag bracket spring nut height “a” Out of specification → Adjust. Sidebag bracket spring nut height 12.0 mm (0.47 in) 2. Check: • Sidebag bracket spring nuts Damage → Replace.
Page 135
GENERAL CHASSIS Removing the seats and side covers 16 Nm (1.6 m kg, 11 ft • • 7 Nm (0.7 m kg, 5.1 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 23 Nm (2.3 m kg, 17 ft •...
Page 136
GENERAL CHASSIS Removing the headlight 7 Nm (0.7 m kg, 5.1 ft • • 7 Nm (0.7 m kg, 5.1 ft • • Order Job/Parts to remove Q’ty Remarks Headlight cover Air temperature sensor coupler Disconnect. Air temperature sensor Headlight (low beam) coupler Disconnect.
Page 137
GENERAL CHASSIS Removing the battery Order Job/Parts to remove Q’ty Remarks Refer to “GENERAL CHASSIS” on page Tool kit tray/Seat bracket 4-1. ECU band ECU (electronic control unit) Coupler tray Negative terminal cover Negative battery lead Disconnect. Positive battery lead Disconnect.
Page 138
GENERAL CHASSIS Removing the battery Order Job/Parts to remove Q’ty Remarks Headlight relay Turn signal relay Plastic locking tie Battery box For installation, reverse the removal proce- dure. 4-12...
Page 139
GENERAL CHASSIS Removing the air filter case 10 Nm (1.0 m kg, 7.2 ft 10 Nm (1.0 m kg, 7.2 ft • • • • 16 Nm (1.6 m kg, 11 ft • • Order Job/Parts to remove Q’ty Remarks Refer to “GENERAL CHASSIS”...
Page 140
GENERAL CHASSIS Removing the air filter case 10 Nm (1.0 m kg, 7.2 ft 10 Nm (1.0 m kg, 7.2 ft • • • • 16 Nm (1.6 m kg, 11 ft • • Order Job/Parts to remove Q’ty Remarks Air filter case bracket Air filter case joint clamp screw Loosen.
FRONT WHEEL EAS21870 FRONT WHEEL Removing the front wheel and brake discs 10 Nm (1.0 m kg, 7.2 ft • • 40 Nm (4.0 m kg, 29 ft • • 40 Nm (4.0 m kg, 29 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
Page 142
FRONT WHEEL Removing the front wheel and brake discs 10 Nm (1.0 m kg, 7.2 ft • • 40 Nm (4.0 m kg, 29 ft • • 40 Nm (4.0 m kg, 29 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
Page 143
FRONT WHEEL Disassembling the front wheel Order Job/Parts to remove Q’ty Remarks Oil seal Wheel bearing Spacer For assembly, reverse the disassembly pro- cedure. 4-17...
FRONT WHEEL EAS21900 EAS21910 REMOVING THE FRONT WHEEL DISASSEMBLING THE FRONT WHEEL 1. Stand the vehicle on a level surface. 1. Remove: • Oil seals EWA13120 WARNING • Wheel bearings Securely support the vehicle so that there is M MMM M MMM M MMM M MMM...
FRONT WHEEL EAS21960 ASSEMBLING THE FRONT WHEEL 1. Install: • Wheel bearings • Oil seals M MMM M MMM M MMM M MMM M MMM a. Install the new wheel bearings and oil seals in the reverse order of disassembly. EC1D71011 CAUTION: Do not contact the wheel bearing inner race...
FRONT WHEEL ° c. If the heavy spot does not stay in that posi- c. Turn the front wheel 90 so that the “X ” mark tion, install a heavier weight. is positioned as shown. d. Repeat steps (b) and (c) until the front wheel d.
Page 147
FRONT WHEEL Front brake caliper bolt 40 Nm (4.0 m·kg, 29 ft·lb) EWA13500 WARNING Make sure the brake hose is routed properly. 7. Install: • Front fender • Left front brake hose guide bracket • Right front brake hose guide bracket 2.
REAR WHEEL EAS22020 REAR WHEEL Removing the rear fender 23 Nm (2.3 m kg, 17 ft • • 40 Nm (4.0 m kg, 29 ft • • Order Job/Parts to remove Q’ty Remarks Refer to “GENERAL CHASSIS” on page Rider seat/Passenger seat/Tool kit tray 4-1.
Page 150
REAR WHEEL Removing the rear wheel 16 Nm (1.6 m kg, 11 ft • • 7 Nm (0.7 m kg, 5.1 ft • • 150 Nm (15.0 m kg, 110 ft • • 27 Nm (2.7 m kg, 19 ft •...
Page 151
REAR WHEEL Removing the rear wheel 16 Nm (1.6 m kg, 11 ft • • 7 Nm (0.7 m kg, 5.1 ft • • 150 Nm (15.0 m kg, 110 ft • • 27 Nm (2.7 m kg, 19 ft •...
Page 152
REAR WHEEL Removing the rear brake disc and rear wheel drive hub Order Job/Parts to remove Q’ty Remarks Rear brake disc cover Rear brake disc Rear wheel pulley Oil seal Circlip Rear wheel drive hub Circlip Bearing Collar Bearing Rear wheel drive hub damper Rear wheel For installation, reverse the removal proce- dure.
Page 153
REAR WHEEL Disassembling the rear wheel Order Job/Parts to remove Q’ty Remarks Collar Bearing Spacer Oil seal Circlip Bearing For assembly, reverse the disassembly pro- cedure. 4-27...
REAR WHEEL EAS28760 REMOVING THE REAR WHEEL (DISC) 1. Stand the vehicle on a level surface. EWA13120 WARNING Securely support the vehicle so that there is no danger of it falling over. NOTE: Place the vehicle on a suitable stand so that the rear wheel is elevated.
FRONT BRAKE EAS22210 FRONT BRAKE Removing the front brake pads 10 Nm (1.0 m kg, 7.2 ft • • 40 Nm (4.0 m kg, 29 ft • • 6 Nm (0.6 m kg, 4.3 ft • • Order Job/Parts to remove Q’ty Remarks The following procedure applies to both of...
Page 158
FRONT BRAKE Removing the front brake master cylinder 30 Nm (3.0 m kg, 22 ft • • 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Drain. Brake fluid Refer to “BLEEDING THE HYDRAULIC BRAKE SYSTEM”...
Page 159
FRONT BRAKE Disassembling the front brake master cylinder Order Job/Parts to remove Q’ty Remarks Dust boot Circlip Brake master cylinder kit Brake master cylinder body For assembly, reverse the disassembly pro- cedure. 4-33...
Page 160
FRONT BRAKE Removing the front brake calipers 40 Nm (4.0 m kg, 29 ft • • 32 Nm (3.2 m kg, 23 ft • • 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks The following procedure applies to both of the front brake calipers.
Page 161
FRONT BRAKE Disassembling the front brake calipers Order Job/Parts to remove Q’ty Remarks The following procedure applies to both of the front brake calipers. Brake pad clip Brake pad pin Brake pad spring Brake pad Brake pad shim Brake caliper piston Brake caliper piston seal Bleed screw For assembly, reverse the disassembly pro-...
FRONT BRAKE EAS22220 e. Measure the deflection 1.5 mm (0.06 in) be- INTRODUCTION low the edge of the brake disc. EWA14100 WARNING Disc brake components rarely require disas- sembly. Therefore, always follow these pre- ventive measures: • Never disassemble brake components un- less absolutely necessary.
FRONT BRAKE d. Measure the brake disc deflection. 2. Install: e. If out of specification, repeat the adjustment • Brake pad shims steps until the brake disc deflection is within (onto the brake pads) specification. • Brake pads f. If the brake disc deflection cannot be brought •...
FRONT BRAKE • Front brake hose “4” NOTE: Put the end of the brake hose into a container and pump out the brake fluid carefully. L LLL L LLL L LLL L LLL L LLL 3. Install: • Brake pad pin •...
FRONT BRAKE EAS22410 ASSEMBLING THE FRONT BRAKE CALIPERS EWA13620 WARNING • Before installation, all internal brake com- ponents should be cleaned and lubricated with clean or new brake fluid. • Never use solvents on internal brake com- ponents as they will cause the piston seals to swell and distort.
FRONT BRAKE • Brake fluid delivery passages • First, tighten the rear bolt, then the front bolt. (brake master cylinder body) Obstruction → Blow out with compressed air. 2. Install: • Copper washers 2. Check: • Front brake hose “1” •...
Page 168
FRONT BRAKE EWA13540 WARNING • Use only the designated brake fluid. Other brake fluids may cause the rubber seals to deteriorate, causing leakage and poor brake performance. • Refill with the same type of brake fluid that is already in the system. Mixing brake fluids may result in a harmful chemical reaction, leading to poor brake performance.
REAR BRAKE EAS22550 REAR BRAKE Removing the rear brake pads 6 Nm (0.6 m kg, 4.3 ft • • 27 Nm (2.7 m kg, 19 ft • • Order Job/Parts to remove Q’ty Remarks Rear brake caliper bolt Rear brake caliper Rear brake pad Brake pad spring For installation, reverse the removal proce-...
Page 170
REAR BRAKE Removing the rear brake master cylinder 7 Nm (0.7 m kg, 5.1 ft • • 48 Nm (4.8 m kg, 35 ft • • 23 Nm (2.3 m kg, 17 ft • • 16 Nm (1.6 m kg, 11 ft •...
Page 171
REAR BRAKE Removing the rear brake master cylinder 7 Nm (0.7 m kg, 5.1 ft • • 48 Nm (4.8 m kg, 35 ft • • 23 Nm (2.3 m kg, 17 ft • • 16 Nm (1.6 m kg, 11 ft •...
Page 172
REAR BRAKE Disassembling the rear brake master cylinder Order Job/Parts to remove Q’ty Remarks Dust boot Circlip Brake master cylinder kit Circlip Brake hose joint O-ring Brake master cylinder body For assembly, reverse the disassembly pro- cedure. 4-46...
Page 173
REAR BRAKE Removing the rear brake caliper 30 Nm (3.0 m kg, 22 ft • • 27 Nm (2.7 m kg, 19 ft • • Order Job/Parts to remove Q’ty Remarks Drain. Brake fluid Refer to “BLEEDING THE HYDRAULIC BRAKE SYSTEM” on page 3-22. Rear brake hose union bolt Copper washer Rear brake hose...
Page 174
REAR BRAKE Disassembling the rear brake caliper 6 Nm (0.6 m kg, 4.3 ft • • Order Job/Parts to remove Q’ty Remarks Brake caliper piston Brake caliper piston seal Bleed screw For assembly, reverse the disassembly pro- cedure. 4-48...
REAR BRAKE Refer to “BLEEDING THE HYDRAULIC NOTE: BRAKE SYSTEM” on page 3-22. Always install new brake pads and brake pad springs as a set. EAS22590 REMOVING THE REAR BRAKE CALIPER M MMM M MMM M MMM M MMM M MMM a.
REAR BRAKE EAS22650 ASSEMBLING THE REAR BRAKE CALIPER EWA13620 WARNING • Before installation, all internal brake com- ponents should be cleaned and lubricated with clean or new brake fluid. • Never use solvents on internal brake com- ponents as they will cause the piston seals to swell and distort.
HANDLEBAR EAS22840 HANDLEBAR Removing the handlebar 28 Nm (2.8 m kg, 20 ft • • 23 Nm (2.3 m kg, 17 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 50 Nm (5.0 m kg, 36 ft •...
Page 182
HANDLEBAR Removing the handlebar 28 Nm (2.8 m kg, 20 ft • • 23 Nm (2.3 m kg, 17 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 50 Nm (5.0 m kg, 36 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
HANDLEBAR EAS22860 REMOVING THE HANDLEBAR 1. Stand the vehicle on a level surface. EWA13120 WARNING Securely support the vehicle so that there is no danger of it falling over. 2. Remove: • Handlebar grip “1” NOTE: 3. Pass the left and right handlebar switch leads Blow compressed air between the handlebar through the handlebar.
Page 184
HANDLEBAR EWA13700 • There should be 1–3 mm (0.04–0.12 in) of WARNING clearance “c” between the throttle grip and the Do not touch the handlebar grip until the rub- grip end. ber adhesive has fully dried. L LLL L LLL L LLL L LLL L LLL...
Page 185
HANDLEBAR Throttle cable free play 4.0–6.0 mm (0.16–0.24 in) 4-59...
FRONT FORK EAS22950 FRONT FORK Removing the front fork legs 10 Nm (1.0 m kg, 7.2 ft • • 115 Nm (11.5 m kg, 85 ft • • 19 Nm (1.9 m kg, 13 ft • • 16 Nm (1.6 m kg, 11 ft •...
Page 187
FRONT FORK Removing the front fork legs 10 Nm (1.0 m kg, 7.2 ft • • 115 Nm (11.5 m kg, 85 ft • • 19 Nm (1.9 m kg, 13 ft • • 16 Nm (1.6 m kg, 11 ft •...
Page 188
FRONT FORK Disassembling the front fork legs 23 Nm (2.3 m kg, 17 ft • • 40 Nm (4.0 m kg, 29 ft • • Order Job/Parts to remove Q’ty Remarks The following procedure applies to both of the front fork legs. Cap bolt O-ring Spacer...
Page 189
FRONT FORK Disassembling the front fork legs 23 Nm (2.3 m kg, 17 ft • • 40 Nm (4.0 m kg, 29 ft • • Order Job/Parts to remove Q’ty Remarks Spring Oil flow stopper Outer tube For assembly, reverse the disassembly pro- cedure.
FRONT FORK EAS22960 REMOVING THE FRONT FORK LEGS The following procedure applies to both of the front fork legs. 1. Stand the vehicle on a level surface. EWA13120 WARNING Securely support the vehicle so that there is no danger of it falling over. NOTE: 3.
FRONT FORK ECA14200 CAUTION: • The front fork leg has a built-in damper ad- justing rod and a very sophisticated inter- nal construction, which are particularly sensitive to foreign material. • When disassembling and assembling the front fork leg, do not allow any foreign ma- terial to enter the front fork.
Page 192
FRONT FORK • Washer (with the fork seal driver “2”) Fork seal driver 90890-01442 Adjustable fork seal driver (36–46 YM-01442 2. Lubricate: • Inner tube’s outer surface Recommended oil Fork oil 10WT 3. Install: • Inner tube (in the outer tube) 7.
Page 193
FRONT FORK Quantity 571.0 cm³ (19.31 US oz) (20.10 Imp.oz) Recommended oil Fork oil 10WT 11.Measure: • Front fork leg oil level “a” (from the top of the inner tube, with the outer tube fully compressed and without the fork 8.
FRONT FORK NOTE: Align the groove “a” in the upper front fork cover “1” with the lower front fork cover nut “2”. EAS23050 INSTALLING THE FRONT FORK LEGS The following procedure applies to both of the front fork legs. 6. Tighten: 1.
STEERING HEAD EAS23090 STEERING HEAD Removing the lower bracket 1st 52 Nm (5.2 m kg, 37 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 2nd 18 Nm (1.8 m kg, 13 ft • • 16 Nm (1.6 m kg, 11 ft •...
Page 196
STEERING HEAD Removing the lower bracket 1st 52 Nm (5.2 m kg, 37 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 2nd 18 Nm (1.8 m kg, 13 ft • • 16 Nm (1.6 m kg, 11 ft •...
STEERING HEAD EAS23110 M MMM M MMM M MMM M MMM M MMM REMOVING THE LOWER BRACKET a. Remove the bearing races from the steering 1. Stand the vehicle on a level surface. head pipe with a long rod “1” and hammer. EWA13120 b.
Page 198
STEERING HEAD 2. Install: • Lower ring nut “1” • Rubber washer “2” • Upper ring nut “3” • Lock washer “4” Refer to “CHECKING AND ADJUSTING THE STEERING HEAD” on page 3-25. 3. Install: • Front brake hose joint “1” •...
REAR SHOCK ABSORBER ASSEMBLY AND SWINGARM ET1D71001 REAR SHOCK ABSORBER ASSEMBLY AND SWINGARM Removing the rear shock absorber assembly and swingarm 48 Nm (4.8 m kg, 35 ft • • 7 Nm (0.7 m kg, 5.1 ft • • 7 Nm (0.7 m kg, 5.1 ft •...
Page 200
REAR SHOCK ABSORBER ASSEMBLY AND SWINGARM Removing the rear shock absorber assembly and swingarm 48 Nm (4.8 m kg, 35 ft • • 7 Nm (0.7 m kg, 5.1 ft • • 7 Nm (0.7 m kg, 5.1 ft • •...
Page 201
REAR SHOCK ABSORBER ASSEMBLY AND SWINGARM Removing the rear shock absorber and swingarm 40 Nm (4.0 m kg, 29 ft • • 59 Nm (5.9 m kg, 43 ft • • 59 Nm (5.9 m kg, 43 ft • • Order Job/Parts to remove Q’ty...
REAR SHOCK ABSORBER ASSEMBLY AND SWINGARM EAS23180 NOTE: HANDLING THE REAR SHOCK ABSORBER Place the vehicle on a suitable stand so that the EWA13740 WARNING rear wheel is elevated. This rear shock absorber contains highly 2. Loosen: compressed nitrogen gas. Before handling •...
REAR SHOCK ABSORBER ASSEMBLY AND SWINGARM EAS23360 CHECKING THE SWINGARM 1. Check: • Swingarm Bends/cracks/damage → Replace. 2. Check: • Pivot shaft Roll the pivot shaft on a flat surface. Bends → Replace. EWA13770 WARNING L LLL L LLL L LLL L LLL L LLL Do not attempt to straighten a bent pivot...
Page 204
REAR SHOCK ABSORBER ASSEMBLY AND SWINGARM 2. Install: • Spacer “2” • Bearings “1”, “2”, “3” EC1D71010 CAUTION: (to the relay arm) When inserting the spacer into the connect- • Oil seals “4”, “5” ing arms and the rear shock absorber, be (to the relay arm) careful not to damage the bushings and O- Installed depth “a”...
BELT DRIVE EAS23510 BELT DRIVE Removing the drive belt and drive pulley 10 Nm (1.0 m kg, 7.2 ft 53 Nm (5.3 m kg, 38 ft • • • • 63 Nm (6.3 m kg, 45 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
Page 207
BELT DRIVE Removing the drive belt and drive pulley 10 Nm (1.0 m kg, 7.2 ft 53 Nm (5.3 m kg, 38 ft • • • • 63 Nm (6.3 m kg, 45 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
BELT DRIVE EAS23520 • The drive belt can not be bent smaller than REMOVING THE DRIVE BELT AND DRIVE 127 mm (5 in) “a”. PULLEY • The removed drive belt can not be twisted NOTE: inside out. Loosen the drive pulley nut before removing the rear wheel.
Page 209
BELT DRIVE 3. Install: • Swingarm • Rear shock absorber Refer to “REAR SHOCK ABSORBER AS- SEMBLY AND SWINGARM” on page 4-73. • Rear wheel Refer to “REAR WHEEL” on page 4-23. 4. Tighten: • Drive pulley nut Drive pulley nut 140 Nm (14.0 m·kg, 100 ft·lb) NOTE: •...
Page 210
ENGINE ENGINE REMOVAL ..................5-1 INSTALLING THE SHIFT PEDAL ASSEMBLY......... 5-5 CHECKING THE OIL COOLER ..............5-7 REMOVING THE ENGINE..............5-12 INSTALLING THE ENGINE ..............5-12 CAMSHAFTS ....................5-14 REMOVING THE CYLINDER HEAD COVERS ........5-21 REMOVING THE ROCKER ARMS, PUSH RODS AND VALVE LIFTERS....................
Page 211
CLUTCH ......................5-50 REMOVING THE CLUTCH ..............5-60 REMOVING THE PRIMARY DRIVE GEAR ..........5-60 REMOVING THE LEFT BALANCER DRIVE GEAR ....... 5-60 CHECKING THE FRICTION PLATES ............ 5-61 CHECKING THE CLUTCH PLATES............5-61 CHECKING THE CLUTCH SPRING PLATE .......... 5-61 CHECKING THE CLUTCH HOUSING............
Page 212
CRANKCASE....................5-89 DISASSEMBLING THE CRANKCASE ........... 5-92 CHECKING THE CRANKCASE.............. 5-92 CHECKING THE BEARINGS AND OIL SEAL ........5-92 CHECKING THE OIL DELIVERY PIPE AND OIL PIPE......5-92 CHECKING THE OIL STRAINERS............5-92 CHECKING THE ENGINE OIL PUMP DRIVEN GEAR ......5-93 INSTALLING THE BEARING RETAINERS ..........
ENGINE REMOVAL EAS23710 ENGINE REMOVAL Removing the muffler and exhaust pipes 10 Nm (1.0 m kg, 7.2 ft • • 29 Nm (2.9 m kg, 21 ft • • 53 Nm (5.3 m kg, 38 ft • • 24 Nm (2.4 m kg, 17 ft •...
Page 214
ENGINE REMOVAL Removing the muffler and exhaust pipes 10 Nm (1.0 m kg, 7.2 ft • • 29 Nm (2.9 m kg, 21 ft • • 53 Nm (5.3 m kg, 38 ft • • 24 Nm (2.4 m kg, 17 ft •...
Page 215
ENGINE REMOVAL Removing the cylinder-#1 ignition coils and sidestand 7 Nm (0.7 m kg, 5.1 ft • • 12 Nm (1.2 m kg, 8.7 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 16 Nm (1.6 m kg, 11 ft •...
Page 216
ENGINE REMOVAL Removing the cylinder-#1 ignition coils and sidestand 7 Nm (0.7 m kg, 5.1 ft • • 12 Nm (1.2 m kg, 8.7 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 16 Nm (1.6 m kg, 11 ft •...
ENGINE REMOVAL ET1D71029 INSTALLING THE SHIFT PEDAL ASSEMBLY 1. Assemble: • Shift pedal (heel side) “1” • Shift pedal (toe side) “2” Shift pedal (heel side) bolt 13 Nm (1.3 m·kg, 9.4 ft·lb) NOTE: Align the mark “a” on the pin on the toe side with the mark “b”...
Page 218
ENGINE REMOVAL Removing the oil cooler and oil filter bracket 7 Nm (0.7 m kg, 5.1 ft • • 7 Nm (0.7 m kg, 5.1 ft • • 7 Nm (0.7 m kg, 5.1 ft • • 17 Nm (1.7 m kg, 12 ft •...
ENGINE REMOVAL ET1D71028 CHECKING THE OIL COOLER 1. Check: • Oil cooler fins Obstruction → Clean. Apply compressed air to the rear of the oil cooler. Damage → Repair or replace. NOTE: Straighten any flattened fins with a thin, flathead screwdriver.
Page 220
ENGINE REMOVAL Disconnecting the leads 10 Nm (1.0 m kg, 7.2 ft • • 7 Nm (0.7 m kg, 5.1 ft • • 10 Nm (1.0 m kg, 7.2 ft 7 Nm (0.7 m kg, 5.1 ft • • • •...
Page 221
ENGINE REMOVAL Disconnecting the leads 10 Nm (1.0 m kg, 7.2 ft • • 7 Nm (0.7 m kg, 5.1 ft • • 10 Nm (1.0 m kg, 7.2 ft 7 Nm (0.7 m kg, 5.1 ft • • • •...
Page 222
ENGINE REMOVAL Removing the engine 105 Nm (10.5 m kg, 75 ft 59 Nm (5.9 m kg, 43 ft 53 Nm (5.3 m kg, 38 ft • • • • • • 18 Nm (1.8 m kg, 13 ft 66 Nm (6.6 m kg, 48 ft •...
Page 223
ENGINE REMOVAL Removing the engine 105 Nm (10.5 m kg, 75 ft 59 Nm (5.9 m kg, 43 ft 53 Nm (5.3 m kg, 38 ft • • • • • • 18 Nm (1.8 m kg, 13 ft 66 Nm (6.6 m kg, 48 ft •...
CAMSHAFTS EAS23750 CAMSHAFTS Removing the camshaft sprocket cover 10 Nm (1.0 m kg, 7.2 ft • • 18 Nm (1.8 m kg, 13 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
Page 227
CAMSHAFTS Removing the cylinder head covers 10 Nm (1.0 m kg, 7.2 ft • • 7 Nm (0.7 m kg, 5.1 ft • • Order Job/Parts to remove Q’ty Remarks Cylinder head breather hose Oil tank breather hose Disconnect. Wire harness guide Fuel tank damper Fuel outlet hose Disconnect.
Page 228
CAMSHAFTS Removing the push rods and rocker arms 10 Nm (1.0 m kg, 7.2 ft 24 Nm (2.4 m kg, 17 ft • • • • 24 Nm (2.4 m kg, 17 ft • • 20 Nm (2.0 m kg, 14 ft •...
Page 229
CAMSHAFTS Removing the valve lifters 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Refer to “CYLINDERS AND PISTONS” on Front cylinder page 5-45. Push rod cover O-ring O-ring Seal...
Page 230
CAMSHAFTS Removing the camshafts and right balancer 40 Nm (4.0 m kg, 29 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 40 Nm (4.0 m kg, 29 ft 60 Nm (6.0 m kg, 43 ft •...
Page 231
CAMSHAFTS Removing the camshafts and right balancer 40 Nm (4.0 m kg, 29 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 40 Nm (4.0 m kg, 29 ft 60 Nm (6.0 m kg, 43 ft •...
Page 232
CAMSHAFTS Disassembling the camshafts Order Job/Parts to remove Q’ty Remarks Circlip Washer Decompression cam spring Decompression cam Decompression pin Front cylinder camshaft Rear cylinder camshaft For assembly, reverse the disassembly pro- cedure. 5-20...
CAMSHAFTS ET1D71030 REMOVING THE CYLINDER HEAD COVERS 1. Remove: • Front cylinder • Rear cylinder “1” NOTE: Due to the small clearance between the frame and the rear cylinder head cover, the three bolts “2” cannot be removed when the cover is in place.
Page 234
CAMSHAFTS NOTE: • Place a folded copper washer “3” between the teeth of the right balancer drive gear and right balancer driven gear in order to lock them. • Place a folded copper washer “4” between the teeth of the right balancer drive gear and right balancer driven gear in order to lock them.
CAMSHAFTS EAS23860 CHECKING THE CAMSHAFTS 1. Check: • Cam Blue discoloration/pitting/scratches → Re- place the camshaft. 2. Measure: • Cam dimensions A “a” and B “b” Out of specification → Replace the camshaft. Camshaft lobe dimensions 3. Measure: Intake A •...
CAMSHAFTS NOTE: Calculate the clearance by subtracting the cam- shaft journal diameter (crankcase side) from the crankcase hole inside diameter. Camshaft to crankcase clearance 0.020–0.064 mm (0.0008–0.0025 8. Calculate: 5. Measure: • Camshaft to camshaft cover clearance Out of specification → Replace the defective •...
CAMSHAFTS • Push rod end Bends/damage → Replace. 2. Measure: • Push rod runout Out of specification → Replace. Valve push rod runout 0.3 mm (0.012 in) 4. Measure: • Rocker arm shaft outside diameter “a” Out of specification → Replace. Rocker arm shaft outside diame- 17.976–17.991 mm (0.7077–...
CAMSHAFTS EAS24030 INSTALLING THE CAMSHAFTS Decompression cam spring 1. Install: Free length • Camshafts 20.0 mm (0.79 in) Limit NOTE: 19.0 mm (0.75 in) Lubricate molybdenum disulfide oil onto the camshaft journals and lobes. 2. Install: • Camshaft cover 1 “1” •...
Page 240
CAMSHAFTS NOTE: Camshaft drive gear bolt • Align the projection “a” on the washer “3” with 60 Nm (6.0 m·kg, 43 ft·lb) the punch mark “b” on the front cylinder cam- Right balancer driven gear bolt shaft gear. 40 Nm (4.0 m·kg, 29 ft·lb) •...
CAMSHAFTS NOTE: • Place a folded copper washer “2” between the teeth of the camshaft drive gear and camshaft driven gear in order to lock them. • Do not damage the teeth of the camshaft drive and camshaft driven gears. •...
CAMSHAFTS ECA14650 h. Rotate the crankshaft until the mark (on the CAUTION: camshaft driven gear) for the valve lifter to be Be sure to install the valve lifter in its appro- bled aligns with the camshaft drive gear as priate position. shown.
CAMSHAFTS M MMM M MMM M MMM M MMM M MMM a. Put the rocker arm base on the cylinder head. b. Install the push rods. NOTE: • Be sure to correctly install the push rods be- tween the rocker arms and valve lifters as shown.
CAMSHAFTS Bolts “2”: l = 45 mm (1.77 in) Bolts “3”: l = 70 mm (2.76 in) L LLL L LLL L LLL L LLL L LLL EAS24080 INSTALLING THE CYLINDER HEAD COVERS 1. Install: • Rear cylinder head cover “1” •...
CYLINDER HEADS EAS24110 CYLINDER HEADS Removing the cylinder heads 59 Nm (5.9 m kg, 43 ft • • 66 Nm (6.6 m kg, 48 ft • • 53 Nm (5.3 m kg, 38 ft • • 20 Nm (2.0 m kg, 14 ft •...
Page 246
CYLINDER HEADS Removing the cylinder heads 59 Nm (5.9 m kg, 43 ft • • 66 Nm (6.6 m kg, 48 ft • • 53 Nm (5.3 m kg, 38 ft • • 20 Nm (2.0 m kg, 14 ft •...
CYLINDER HEADS EAS24140 REMOVING THE CYLINDER HEADS 1. Remove: • Cylinder head nuts NOTE: • Loosen the nuts in the proper sequence as shown. • Loosen each nut 1/2 of a turn at a time. After all of the nuts are fully loosened, remove them. 2.
CYLINDER HEADS EAS24250 INSTALLING THE CYLINDER HEADS 1. Install: • Cylinder head gasket “1” • Dowel pins “2” NOTE: The “1D7” mark on the cylinder head gasket must face up and towards the left side of the cyl- inder. A. Front cylinder B.
Page 250
VALVES AND VALVE SPRINGS EAS24270 VALVES AND VALVE SPRINGS Removing the valves and valve springs Order Job/Parts to remove Q’ty Remarks The following procedure applies to both cyl- inders. Cylinder heads Refer to “CYLINDER HEADS” on page 5-33. Valve cotter Upper spring seat Valve spring Intake valve...
VALVES AND VALVE SPRINGS EAS24280 REMOVING THE VALVES The following procedure applies to all of the valves and related components. NOTE: Before removing the internal parts of the cylinder head (e.g., valves, valve springs, valve seats), make sure the valves properly seal. 1.
Page 252
VALVES AND VALVE SPRINGS b. Install the new valve guide with the valve Valve-stem-to-valve-guide clear- guide installer “2” and valve guide remover ance (intake) “1”. 0.010–0.037 mm (0.0004–0.0015 Limit 0.080 mm (0.0032 in) Valve-stem-to-valve-guide clear- ance (exhaust) 0.025–0.052 mm (0.0010–0.0020 Limit 0.100 mm (0.0039 in) c.
VALVES AND VALVE SPRINGS • Valve stem end 1. Eliminate: Mushroom shape or diameter larger than the • Carbon deposits body of the valve stem → Replace the valve. (from the valve face and valve seat) 5. Measure: 2. Check: •...
VALVES AND VALVE SPRINGS 4. Lap: • Valve face • Valve seat NOTE: After replacing the cylinder head or replacing the valve and valve guide, the valve seat and valve face should be lapped. M MMM M MMM M MMM M MMM M MMM a.
VALVES AND VALVE SPRINGS Free length (intake) Spring tilt (intake) 46.71 mm (1.84 in) 2.5 °/2.0 mm Limit Spring tilt (exhaust) 44.71 mm (1.76 in) 2.5 °/2.0 mm Free length (exhaust) 46.71 mm (1.84 in) Limit 44.71 mm (1.76 in) EAS24340 INSTALLING THE VALVES The following procedure applies to all of the...
Page 256
VALVES AND VALVE SPRINGS • Lower spring seat “2” • Valve stem seal “3” • Valve “4” • Valve spring “5” • Upper spring seat “6” (into the cylinder head) NOTE: • Make sure each valve is installed in its original place.
Page 257
CYLINDERS AND PISTONS EAS24360 CYLINDERS AND PISTONS Removing the cylinders and pistons Order Job/Parts to remove Q’ty Remarks Cylinder heads Refer to “CYLINDER HEADS” on page 5-33. Front cylinder Rear cylinder Cylinder gasket Dowel pin Circlip Piston pin Piston Top ring 2nd ring Oil ring For installation, reverse the removal proce-...
CYLINDERS AND PISTONS EAS24380 NOTE: REMOVING THE PISTON When removing a piston ring, open the end gap 1. Remove: with your fingers and lift the other side of the ring • Piston pin clips “1” over the piston crown. • Piston pin “2” •...
CYLINDERS AND PISTONS EAS24430 CHECKING THE PISTON RINGS 1. Measure: • Piston ring side clearance Out of specification → Replace the piston and piston rings as a set. NOTE: Before measuring the piston ring side clearance, eliminate any carbon deposits from the piston ring grooves and piston rings.
CYLINDERS AND PISTONS 3. Measure: • Piston ring end gap Out of specification → Replace the piston ring. NOTE: The oil ring expander spacer’s end gap cannot be measured. If the oil ring rail’s gap is exces- sive, replace all three piston rings. Piston ring 3.
Page 261
CYLINDERS AND PISTONS • Oil ring expander “5” 3. Lubricate: • Piston NOTE: • Piston rings Be sure to install the piston rings so that the • Cylinder manufacturer’s marks or numbers face up. (with the recommended lubricant) Recommended lubricant Engine oil 4.
CLUTCH EAS25060 CLUTCH Removing the clutch cover 12 Nm (1.2 m kg, 8.7 ft • • 10 Nm (1.0 m kg, 7.2 ft • • (11) 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Drain.
Page 263
CLUTCH Removing the clutch cover 12 Nm (1.2 m kg, 8.7 ft • • 10 Nm (1.0 m kg, 7.2 ft • • (11) 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Dowel pin For installation, reverse the removal proce- dure.
Page 264
CLUTCH Removing the crankshaft position sensor 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Oil seal Bearing Clutch cover damper plate Clutch cover damper Crankshaft position sensor lead holder Crankshaft position sensor For installation, reverse the removal proce- dure.
Page 265
CLUTCH Removing the clutch 26 25 105 Nm (10.5 m kg, 75 ft • • 15 14 13 12 100 Nm (10.0 m kg, 72 ft • • 8 Nm (0.8 m kg, 5.8 ft • • Order Job/Parts to remove Q’ty Remarks Clutch spring plate retainer...
Page 266
CLUTCH Removing the clutch 26 25 105 Nm (10.5 m kg, 75 ft • • 15 14 13 12 100 Nm (10.0 m kg, 72 ft • • 8 Nm (0.8 m kg, 5.8 ft • • Order Job/Parts to remove Q’ty Remarks Thrust washer 1...
Page 267
CLUTCH Removing the left balancer 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 40 Nm (4.0 m kg, 29 ft • • Order Job/Parts to remove Q’ty Remarks Left balancer idle gear shaft holder Dowel pin O-ring Left balancer idle gear...
Page 268
CLUTCH Removing the clutch master cylinder 30 Nm (3.0 m kg, 22 ft • • 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Drain. Clutch fluid Refer to “BLEEDING THE HYDRAULIC CLUTCH SYSTEM” on page 3-15. Left rearview mirror Clutch master cylinder reservoir cap Clutch master cylinder reservoir diaphragm...
Page 269
CLUTCH Disassembling the clutch master cylinder Order Job/Parts to remove Q’ty Remarks Clutch master cylinder push rod Dust boot Circlip Washer Clutch master cylinder kit Clutch master cylinder body For assembly, reverse the disassembly pro- cedure. 5-57...
Page 270
CLUTCH Removing the clutch release cylinder 19 Nm (1.9 m kg, 13 ft • • 7 Nm (0.7 m kg, 5.1 ft • • 26 Nm (2.6 m kg, 19 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
Page 271
CLUTCH Disassembling the clutch release cylinder 6 Nm (0.6 m kg, 4.3 ft • • Order Job/Parts to remove Q’ty Remarks Boots Clutch release cylinder piston Clutch release cylinder spring Clutch release cylinder piston seal Bleed screw Clutch release cylinder body For assembly, reverse the disassembly pro- cedure.
CLUTCH EAS25080 REMOVING THE CLUTCH Sheave holder 1. Loosen: 90890-01701 • Clutch boss nut “1” Primary clutch holder YS-01880-A NOTE: While holding the clutch boss “2” with the univer- sal clutch holder “3”, loosen the clutch boss nut. Universal clutch holder 90890-04086 YM-91042 2.
CLUTCH A. Friction plate 1, 3 B. Friction plate 2 EAS25100 CHECKING THE FRICTION PLATES The following procedure applies to all of the fric- EAS25110 CHECKING THE CLUTCH PLATES tion plates. The following procedure applies to all of the 1. Check: clutch plates.
CLUTCH • Left balancer driven gear NOTE: • Left balancer idle gear Calculate the clearance by subtracting the left Burrs/chips/roughness/wear → Replace the balancer driven gear housing outside diameter defective part(s). from the left balancer driven gear inside diame- 2. Measure: ter.
CLUTCH L LLL L LLL L LLL L LLL L LLL 4. Install: • Generator rotor Refer to “INSTALLING THE GENERATOR” on page 5-75. 5. Install: • Left balancer drive gear “1” • Left balancer idle gear “2” • Left balancer driven gear “3” NOTE: •...
• Sealant (onto the crankshaft position sensor lead NOTE: grommet) To collect any remaining clutch fluid, place a container under the master cylinder and the end Yamaha bond No. 1215 of the clutch hose. 90890-85505 ® (Three Bond No.1215 ET1D71037 CHECKING THE CLUTCH MASTER 8.
CLUTCH EAS25330 NOTE: CHECKING THE CLUTCH RELEASE In order to ensure a correct reading of the clutch CYLINDER fluid level, make sure the top of the reservoir is Recommended clutch component replace- horizontal. ment schedule 4. Bleed: Piston seal Every two years •...
CLUTCH EAS25350 • When refilling, be careful that water does INSTALLING THE CLUTCH RELEASE not enter the clutch fluid reservoir. Water CYLINDER will significantly lower the boiling point of 1. Install: the clutch fluid and could cause vapor lock. • Copper washers ECA13420 •...
Page 282
SHIFT SHAFT EAS25410 SHIFT SHAFT Removing the shift shaft and stopper lever 22 Nm (2.2 m kg, 16 ft • • 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Clutch housing Refer to “CLUTCH” on page 5-50. Washer Circlip Shift shaft...
GENERATOR AND STARTER CLUTCH EAS24480 GENERATOR AND STARTER CLUTCH Removing the stator coil 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
Page 285
GENERATOR AND STARTER CLUTCH Removing the generator rotor 24 Nm (2.4 m kg, 17 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 80 Nm (8.0 m kg, 58 ft • • Order Job/Parts to remove Q’ty Remarks Torque limiter Starter clutch idle gear shaft...
GENERATOR AND STARTER CLUTCH EAS24490 NOTE: REMOVING THE GENERATOR While holding the generator rotor “1” with the 1. Remove: sheave holder “2”, loosen the starter clutch • Generator rotor bolt “1” bolts. • Washer NOTE: Sheave holder While holding the generator rotor “2” with the 90890-01701 sheave holder “3”, loosen the generator rotor Primary clutch holder...
GENERATOR AND STARTER CLUTCH • Generator rotor “1” • Washer • Generator rotor bolt “2” NOTE: • Clean the tapered portion of the generator shaft and the generator rotor hub. • When installing the rotor, make sure the woo- druff key is properly seated in the key way of the generator shaft.
Page 288
GENERATOR AND STARTER CLUTCH Yamaha bond No. 1215 90890-85505 ® (Three Bond No.1215 5-76...
ELECTRIC STARTER EAS24780 ELECTRIC STARTER Removing the starter motor 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Starter motor lead Disconnect. Starter motor For installation, reverse the removal proce- dure. 5-77...
Page 290
ELECTRIC STARTER Disassembling the starter motor Order Job/Parts to remove Q’ty Remarks Starter motor front cover Bearing Oil seal Circlip Starter motor rear cover Brush Brush holder (along with the brushes) Brush seat (along with the brushes) Bearing Gasket Armature assembly Starter motor yoke For assembly, reverse the disassembly pro- cedure.
ELECTRIC STARTER 7. Check: • Gear teeth Damage/wear → Replace the gear. 8. Check: • Bearings • Oil seal Damage/wear → Replace the defective part(s). EAS24800 ASSEMBLING THE STARTER MOTOR 1. Install: • Starter motor yoke “1” NOTE: Align the projection “a” on the brush holder with the slot “b”...
TRANSFER GEAR CASE EAS25460 TRANSFER GEAR CASE Removing the middle driven shaft 18 Nm (1.8 m kg, 13 ft • • 8 Nm (0.8 m kg, 5.8 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
Page 294
TRANSFER GEAR CASE Removing the middle driven shaft 18 Nm (1.8 m kg, 13 ft • • 8 Nm (0.8 m kg, 5.8 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
Page 295
TRANSFER GEAR CASE Disassembling the transfer gear oil pump ( 6 ) 4 Nm (0.4 m kg, 2.9 ft • • Order Job/Parts to remove Q’ty Remarks Transfer gear oil pump cover Transfer gear oil pump outer rotor Transfer gear oil pump inner rotor Washer Transfer gear oil pump shaft Transfer gear oil pump housing...
Page 296
TRANSFER GEAR CASE Removing the transfer gear case 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 70 Nm (7.0 m kg, 50 ft • • 50 Nm (5.0 m kg, 36 ft •...
Page 297
TRANSFER GEAR CASE Disassembling the oil tank 28 Nm (2.8 m kg, 20 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • (15) 10 Nm (1.0 m kg, 7.2 ft •...
TRANSFER GEAR CASE EAS25470 2. Check: REMOVING THE MIDDLE DRIVEN SHAFT • Primary chain NOTE: Damage/stiffness → Replace the primary Loosen the middle drive gear nut before remove chain, middle drive gear and middle driven the drive pulley. shaft as a set. 1.
TRANSFER GEAR CASE • Transfer gear oil pump outer rotor “6” Inner-rotor-to-outer-rotor-tip • Transfer gear oil pump cover “7” clearance NOTE: Less than 0.12 mm (0.0047 in) When installing the inner rotor, align the pin in Limit the oil pump shaft with the groove in the inner ro- 0.20 mm (0.0079 in) tor.
Page 300
TRANSFER GEAR CASE • Install the middle drive gear “2” with its cham- fered side facing “b” the transfer gear case. • Install the middle driven shaft, middle drive gear and primary chain at the same time. • Align the splines on the middle drive gear with the splines on the drive axle.
CRANKCASE EAS25540 CRANKCASE Separating the crankcase 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft •...
Page 302
CRANKCASE Separating the crankcase 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 24 Nm (2.4 m kg, 17 ft •...
Page 303
CRANKCASE Removing the oil seals and bearings 20 Nm (2.0 m kg, 14 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Oil pump Refer to “OIL PUMP”...
CRANKCASE EAS25570 DISASSEMBLING THE CRANKCASE 1. Remove: • Crankcase bolts NOTE: • Loosen each bolt 1/4 of a turn at a time, in stag- es and in a crisscross pattern. After all of the bolts are fully loosened, remove them. •...
• Tighten each bolt 1/4 of a turn at a time, in stag- (onto the crankcase mating surfaces) es and in a crisscross pattern. • Tighten the bolts in numerical order (refer to Yamaha bond No. 1215 the numbers in the illustration). 90890-85505 • M8 × 90 mm bolts: “1”, “2”...
Page 306
CRANKCASE 14 19 20 16 15 A. Right crankcase B. Left crankcase 5. Apply: • Engine oil (onto the crankshaft pin bearings and oil de- livery holes) 6. Check: • Crankshaft and transmission operation Rough movement → Repair. 5-94...
OIL PUMP EAS24910 OIL PUMP Removing the oil pump 24 Nm (2.4 m kg, 17 ft • • Order Job/Parts to remove Q’ty Remarks Separate. Crankcase Refer to “CRANKCASE” on page 5-89. Oil pump assembly For installation, reverse the removal proce- dure.
Page 308
OIL PUMP Disassembling the oil pump 7 Nm (0.7 m kg, 5.1 ft • • 7 Nm (0.7 m kg, 5.1 ft • • Order Job/Parts to remove Q’ty Remarks Oil pump housing cover 1 Oil scavenging pump outer rotor 1 Oil scavenging pump inner rotor 1 Oil pump housing 1 Oil strainer...
Page 309
OIL PUMP Disassembling the oil pump 7 Nm (0.7 m kg, 5.1 ft • • 7 Nm (0.7 m kg, 5.1 ft • • Order Job/Parts to remove Q’ty Remarks Oil pump shaft Oil seal Circlip Oil seal Ball Ball guide Oil pump housing 2 For assembly, reverse the disassembly pro- cedure.
OIL PUMP 2. Measure: • Oil pump shaft • Ball spring force (with the recommended lubricant) • Relief valve spring force Recommended lubricant Out of specification → Replace the defective Engine oil part(s). 2. Install: Ball spring • Oil pump housing 2 “1” Installed compression spring •...
CRANKSHAFT EAS25960 CRANKSHAFT Removing the crankshaft Order Job/Parts to remove Q’ty Remarks Separate. Crankcase Refer to “CRANKCASE” on page 5-89. Crankshaft Generator shaft Connecting rod cap Big end lower bearing Connecting rod Big end upper bearing For installation, reverse the removal proce- dure.
CRANKSHAFT EAS26010 REMOVING THE CONNECTING RODS 1. Remove: • Connecting rod caps “1” • Connecting rods • Big end bearings NOTE: Identify the position of each big end bearing so that it can be reinstalled in its original place. 3. Measure: •...
Page 315
CRANKSHAFT d. Assemble the connecting rod halves. h. Tighten the connecting rod bolts further to reach the specified angle 125–135°. NOTE: • Do not move the connecting rod or crankshaft Connecting rod bolt (final) until the clearance measurement has been Specified angle 125–135°...
Page 316
CRANKSHAFT For example, if the connecting rod “P ” and the crankshaft web “P” numbers are “5” and “2” respectively, then the bearing size for “P ” “P ” (connecting rod) - “P” (crankshaft) 5 - 2 = 3 (brown) Bearing color code 1.Blue 2.Black 3.Brown 4.Green L LLL...
CRANKSHAFT • Be sure to reinstall each big end bearing in its original place. • Make sure the projection “c” on the connecting rods face towards the left side of the crank- shaft. • Make sure the characters “d” on both the con- necting rod and connecting rod cap are aligned.
CRANKSHAFT a. Tighten the connecting rod bolts with a torque • Crankshaft assembly “2” wrench. ECA13970 CAUTION: Connecting rod bolt (1st) To avoid scratching the crankshaft and to 15 Nm (1.5 m·kg, 11 ft·lb) ease the installation procedure, lubricate the oil seal lips with lithium-soap-based grease b.
Page 322
TRANSMISSION Disassembling the drive axle assembly Order Job/Parts to remove Q’ty Remarks Drive axle For assembly, reverse the disassembly pro- cedure. 5-110...
TRANSMISSION EAS26260 EAS26270 CHECKING THE SHIFT FORKS CHECKING THE SHIFT DRUM ASSEMBLY The following procedure applies to all of the shift 1. Check: forks. • Shift drum groove Damage/scratches/wear → Replace the shift 1. Check: • Shift fork cam follower “1” drum assembly.
TRANSMISSION • Install the circlip so that both ends “b” rest on the sides of a spline “c” with both axles aligned. 3. Check: • Transmission gears Blue discoloration/pitting/wear → Replace the defective gear(s). • Transmission gear dogs Cracks/damage/rounded edges → Replace the defective gear(s).
Page 325
TRANSMISSION • Shift fork guide bars “4” NOTE: The embossed marks “1D7” on the shift forks should face towards the left side of the engine. 2. Check: • Transmission Rough movement → Repair. NOTE: • Apply engine oil to each gear and bearing thor- oughly.
FUEL SYSTEM FUEL TANK ....................6-1 REMOVING THE FUEL TANK..............6-3 REMOVING THE FUEL PUMP ..............6-3 CHECKING THE FUEL PUMP BODY ............6-4 CHECKING THE FUEL PUMP OPERATION ........... 6-4 INSTALLING THE FUEL PUMP..............6-4 INSTALLING THE FUEL TANK ..............6-4 THROTTLE BODIES..................
FUEL TANK EAS26620 FUEL TANK Removing the fuel tank 7 Nm (0.7 m kg, 5.1 ft • • 10 Nm (1.0 m kg, 7.2 ft • • 16 Nm (1.6 m kg, 11 ft • • 7 Nm (0.7 m kg, 5.1 ft •...
Page 328
FUEL TANK Removing the fuel pump and sub-fuel tank 5 Nm (0.5 m kg, 3.6 ft • • 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Refer to “GENERAL CHASSIS” on page Rider seat/Rider seat bracket 4-1.
FUEL TANK EAS26630 REMOVING THE FUEL TANK 1. Extract the fuel in the fuel tank through the fuel tank cap with a pump. 2. Remove: • Fuel tank EC1D71021 CAUTION: Although the fuel has been removed from the fuel tank, be careful when removing the fuel hoses, since there may be fuel remain- d.
FUEL TANK EC1D71022 • Install the fuel pump as shown in the illustra- CAUTION: tion. • Be sure to disconnect the fuel outlet hose • Align the projection “a” on the fuel pump with by hand. Do not forcefully disconnect the the slot in the fuel pump bracket.
Page 331
FUEL TANK M MMM M MMM M MMM M MMM M MMM a. Install the fuel tank. b. Remove the fuel hose joint caps. c. Connect the fuel hose (fuel hose joint to fuel pump) and air vent hose (fuel pump to fuel hose joint).
Page 332
THROTTLE BODIES EAS26970 THROTTLE BODIES Removing the rollover valves 7 Nm (0.7 m kg, 5.1 ft • • 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks For California only Horn 1 connector Disconnect. Horn 1 For California only Fuel tank breather hose...
Page 333
THROTTLE BODIES Removing the pressure regulator 7 Nm (0.7 m kg, 5.1 ft • • 13 Nm (1.3 m kg, 9.4 ft • • 7 Nm (0.7 m kg, 5.1 ft • • Order Job/Parts to remove Q’ty Remarks Pressure regulator cover Fuel hose (intake manifold assembly to pres- sure regulator) Air filter case breather hose 1...
Page 334
THROTTLE BODIES Removing the throttle bodies 3 Nm (0.3 m kg, 2.2 ft • • 3 Nm (0.3 m kg, 2.2 ft • • Order Job/Parts to remove Q’ty Remarks Refer to “GENERAL CHASSIS” on page Rider seat/Rider seat bracket 4-1.
Page 335
THROTTLE BODIES Removing the intake manifolds 10 Nm (1.0 m kg, 7.2 ft • • ( 2 ) ( 2 ) 10 Nm (1.0 m kg, 7.2 ft • • Order Job/Parts to remove Q’ty Remarks Engine temperature sensor coupler Disconnect.
THROTTLE BODIES Disassembling the intake manifolds 30 Nm (3.0 m kg, 22 ft • • 5 Nm (0.5 m kg, 3.6 ft • • 5 Nm (0.5 m kg, 3.6 ft • • Order Job/Parts to remove Q’ty Remarks Cylinder-#1 injector coupler Disconnect.
THROTTLE BODIES ET1D71026 b. Blow out all of the passages with compressed REMOVING THE FUEL HOSE air. 1. Disconnect: L LLL L LLL L LLL L LLL L LLL • Fuel hose (intake manifold assembly to pres- sure regulator) ET1D71007 CHECKING THE ROLLOVER VALVES EC1D71014 1.
THROTTLE BODIES EAS27030 ADJUSTING THE THROTTLE POSITION Vacuum/pressure pump gauge SENSOR 1. Check: 90890-06756 Pressure gauge • Throttle position sensor 90890-03153 Refer to “CHECKING THE THROTTLE PO- Fuel pressure adapter SITION SENSOR” on page 7-89. 90890-03176 2. Adjust: YM-03176 • Throttle position sensor angle M MMM M MMM M MMM...
THROTTLE BODIES NOTE: Install the fuel pipe “1” so that it contacts the pro- jections “a” on the injector joints. ET1D71027 INSTALLING THE FUEL HOSE 1. Connect: • Fuel hose (intake manifold assembly to pres- sure regulator) EC1D71015 CAUTION: When installing the fuel hose, make sure that it is securely connected, and that the fuel hose connector cover on the fuel hose is in the correct position, otherwise the fuel hose...
ISC (IDLE SPEED CONTROL) UNIT ET1D71009 ISC (IDLE SPEED CONTROL) UNIT Removing the ISC (idle speed control) unit 7 Nm (0.7 m kg, 5.1 ft 7 Nm (0.7 m kg, 5.1 ft • • • • 7 Nm (0.7 m kg, 5.1 ft •...
ELECTRICAL SYSTEM IGNITION SYSTEM ..................7-1 CIRCUIT DIAGRAM .................. 7-1 ENGINE STOPPING DUE TO SIDESTAND OPERATION....... 7-3 TROUBLESHOOTING ................7-4 ELECTRIC STARTING SYSTEM..............7-7 CIRCUIT DIAGRAM .................. 7-7 STARTING CIRCUIT CUT-OFF SYSTEM OPERATION......7-9 TROUBLESHOOTING ................7-11 CHARGING SYSTEM ................... 7-13 CIRCUIT DIAGRAM ................
Page 343
ELECTRICAL COMPONENTS ..............7-67 CHECKING THE SWITCHES ..............7-71 CHECKING THE BULBS AND BULB SOCKETS ........7-74 CHECKING THE FUSES ................ 7-75 CHECKING AND CHARGING THE BATTERY........7-76 CHECKING THE RELAYS ..............7-79 CHECKING THE TURN SIGNAL RELAY ..........7-80 CHECKING THE DIODES ..............
IGNITION SYSTEM ET1D71043 ENGINE STOPPING DUE TO SIDESTAND OPERATION When the engine is running and the transmission is in gear, the engine will stop if the sidestand is moved down. This is because the electric current from the ignition coils does not flow to the ECU when both the neutral switch and sidestand switch are set to “OFF”, thereby preventing the spark plugs from producing a spark.
IGNITION SYSTEM EAS27140 TROUBLESHOOTING The ignition system fails to operate (no spark or intermittent spark). NOTE: • Before troubleshooting, remove the following part(s): 1. Rider seat 2. Tool kit tray 3. Rider seat bracket assembly 4. Fuel tank 5. Air filter case 6.
Page 349
IGNITION SYSTEM NG → 8. Check the main switch. Refer to “CHECKING THE Replace the main switch. SWITCHES” on page 7-71. OK ↓ NG → 9. Check the engine stop switch. The engine stop switch is faulty. Replace Refer to “CHECKING THE the right handlebar switch.
ELECTRIC STARTING SYSTEM EAS27180 STARTING CIRCUIT CUT-OFF SYSTEM OPERATION If the engine stop switch is set to “ ” and the main switch is turned “ON” (both switch circuits are closed), the starter motor can only operate if at least one of the following conditions is met: •...
Page 354
ELECTRIC STARTING SYSTEM a. WHEN THE TRANSMISSION IS IN NEUTRAL b. WHEN THE SIDESTAND IS UP AND THE CLUTCH LEVER IS PULLED TO THE HANDLEBAR 1. Battery 2. Main fuse 3. Main switch 4. Ignition fuse 5. Engine stop switch 6.
ELECTRIC STARTING SYSTEM EAS27190 TROUBLESHOOTING The starter motor fails to turn. NOTE: • Before troubleshooting, remove the following part(s): 1. Rider seat 2. Tool kit tray 3. Headlight assembly NG → 1. Check the fuses. (Main, ignition and ECU) Replace the fuse(s). Refer to “CHECKING THE FUS- ES”...
Page 356
ELECTRIC STARTING SYSTEM NG → 9. Check the starter relay. Refer to “CHECKING THE RE- Replace the starter relay. LAYS” on page 7-79. OK ↓ NG → 10.Check the main switch. Refer to “CHECKING THE Replace the main switch. SWITCHES” on page 7-71. OK ↓...
CHARGING SYSTEM EAS27220 TROUBLESHOOTING The battery is not being charged. NOTE: • Before troubleshooting, remove the following part(s): 1. Rider seat 2. Rectifier/regulator cover 3. Lead cover NG → 1. Check the fuse. (Main) Replace the fuse. Refer to “CHECKING THE FUS- ES”...
LIGHTING SYSTEM EAS27260 TROUBLESHOOTING Any of the following fail to light: headlight (high beam), headlight (low beam), high beam indicator light, taillight, license light, position light, meter light or accessory light (OPTION). NOTE: • Before troubleshooting, remove the following part(s): 1.
Page 364
LIGHTING SYSTEM NG → 8. Check the entire lighting system wiring. Properly connect or repair the lighting sys- Refer to “CIRCUIT DIAGRAM” on tem wiring. page 7-17. OK ↓ The lighting system circuit is OK. 7-20...
SIGNALING SYSTEM EAS27290 TROUBLESHOOTING • Any of the following fail to light: turn signal light, brake light or an indicator light. • The horn fails to sound. • The fuel level gauge fails to operate. • The speedometer fails to operate. NOTE: •...
Page 368
SIGNALING SYSTEM NG → 2. Check the horns. Refer to “CHECKING THE Replace the horn(s). HORNS” on page 7-86. OK ↓ NG → 3. Check the entire signaling system wiring. Properly connect or repair the signaling Refer to “CIRCUIT DIAGRAM” on system wiring.
Page 369
SIGNALING SYSTEM NG → 4. Check the entire signaling system wiring. Properly connect or repair the signaling Refer to “CIRCUIT DIAGRAM” on system wiring. page 7-21. OK ↓ This circuit is OK. The neutral indicator light fails to come on. NG →...
Page 370
SIGNALING SYSTEM NG → 2. Check the fuel sender (fuel pump). Refer to “CHECKING THE FUEL Replace the fuel pump assembly. SENDER (FUEL PUMP)” on page 7-88. OK ↓ NG → 3. Check the entire signaling system wiring. Properly connect or repair the signaling Refer to “CIRCUIT DIAGRAM”...
FUEL INJECTION SYSTEM EAS27350 ECU SELF-DIAGNOSTIC FUNCTION The ECU is equipped with a self-diagnostic function in order to ensure that the fuel injection system is operating normally. If this function detects a malfunction in the system, it immediately operates the en- gine under substitute characteristics and illuminates the engine trouble warning light to alert the rider that a malfunction has occurred in the system.
FUEL INJECTION SYSTEM EAS27380 SELF-DIAGNOSTIC FUNCTION TABLE If the ECU detects an abnormal signal from a sensor while the vehicle is being driven, the ECU illumi- nates the engine trouble warning light and provides the engine with alternate operating instructions that are appropriate for the type of malfunction.
Page 375
FUEL INJECTION SYSTEM Able / un- Fault Able / un- Item Symptom able to code No. able to start drive Able Able (depending (depending Cylinder-#1 left or Malfunction detected in the prima- on the on the right ignition coil ry wire of the cylinder-#1 left or number of number of (faulty ignition)
FUEL INJECTION SYSTEM Able / un- Fault Able / un- Item Symptom able to code No. able to start drive Engine has been left idling. (The ECU automatically stops the en- Engine idling stop Able Able gine after 20 minutes if it is left idling.) Communication error with the meter Able / un-...
FUEL INJECTION SYSTEM 5. Erase the malfunction history in the diagnos- The engine operation is not normal but the tic mode. Refer to “Sensor operation table engine trouble warning light does not come (Diagnostic code No. 62)”. 1. Check the operation of following sensors and NOTE: actuators in the Diagnostic mode.
Page 378
FUEL INJECTION SYSTEM “d01 d70” “d70 d01” 7. Verify the operation of the sensor or actuator. • Sensor operation The data representing the operating conditions of the sensor appears on the odometer/trip meter/fu- el reserve trip meter/clock LCD. • Actuator operation Set the engine stop switch to “...
Page 379
FUEL INJECTION SYSTEM Fault Diagnostic code Symptom Probable cause of malfunction code No. A break or disconnection of • Open circuit in wire harness (ECU coupler). the blue/black lead of the • Malfunction in ECU. ECU is detected. • Open or short circuit in wire harness. Air temperature sensor: •...
Page 380
FUEL INJECTION SYSTEM Fault Diagnostic code Symptom Probable cause of malfunction code No. • Open or short circuit in wire sub lead. • Open or short circuit in wire harness. Malfunction detected in the • Malfunction in cylinder-#2 left or right igni- primary wire of the cylin- tion coil.
Page 381
FUEL INJECTION SYSTEM Fault Diagnostic code Symptom Probable cause of malfunction code No. No signals are received • Improper connection in wire harness. Er-2 from the ECU within the • Malfunction in meter. — specified duration. • Malfunction in ECU. •...
Page 382
FUEL INJECTION SYSTEM Diag- nostic Item Meter display Checking method code Fuel system voltage Approximately 12.0 Set the engine stop switch (battery voltage) to “ ”, and then compare with the actually measured battery voltage. (If the bat- tery voltage is lower, per- form recharging.) Engine temperature Displays the engine tempera-...
Page 383
FUEL INJECTION SYSTEM Diag- nostic Item Meter display Checking method code Control number 0–255 — Actuator operation table Diag- nostic Item Actuation Checking method code Actuates the cylinder-#1 left or right ignition coil five times Check the spark five times. Cylinder-#1 left or right ig- at one-second intervals.
FUEL INJECTION SYSTEM Diag- nostic Item Actuation Checking method code Actuates the headlight relay for five cycles of five sec- onds. (ON 2 seconds, OFF 3 Check the operating sound Headlight relay seconds) of the headlight relay five Illuminates the engine trou- times.
Page 385
FUEL INJECTION SYSTEM Fault code No. Symptom No normal signals are received from the crankshaft posi- tion sensor. Diagnostic code No. — — Order Item/components and probable Check or maintenance job Reinstatement cause method Installed condition of crankshaft posi- Check for looseness or pinching. Cranking the tion sensor.
Page 386
FUEL INJECTION SYSTEM Fault code No. Symptom Cylinder-#1 intake air pressure sensor: open or short cir- cuit detected. Diagnostic code No. Cylinder-#1 intake air pressure sensor Order Item/components and probable Check or maintenance job Reinstatement cause method Connections • Check the coupler for any pins Turning the •...
Page 387
FUEL INJECTION SYSTEM Fault code No. Symptom Cylinder-#1 intake air pressure sensor: hose system mal- function (clogged or detached hose). Diagnostic code No. Cylinder-#1 intake air pressure sensor Order Item/components and probable Check or maintenance job Reinstatement cause method Cylinder-#1 intake air pressure sensor •...
Page 388
FUEL INJECTION SYSTEM Fault code No. Symptom Throttle position sensor: open or short circuit detected. Diagnostic code No. Throttle position sensor Order Item/components and probable Check or maintenance job Reinstatement cause method Installed condition of throttle position • Check for looseness or pinch- Turning the sensor.
Page 389
FUEL INJECTION SYSTEM Fault code No. Symptom EXUP servo motor circuit: open or short circuit detected. Diagnostic code No. EXUP servo motor Order Item/components and probable Check or maintenance job Reinstatement cause method Connections • Check the coupler for any pins Turning the •...
Page 390
FUEL INJECTION SYSTEM Fault code No. Symptom A break or disconnection of the blue/black lead of the ECU is detected. Diagnostic code No. Sidestand switch Order Item/components and probable Check or maintenance job Reinstatement cause method Connections • Execute the diagnostic mode. If the transmis- •...
Page 391
FUEL INJECTION SYSTEM Fault code No. Symptom No normal signal is received from the O sensor. Diagnostic code No. — — Order Item/components and probable Check or maintenance job Reinstatement cause method Installed state of O sensor. Check for looseness or pinching. Starting the en- gine and oper- Connections •...
Page 392
FUEL INJECTION SYSTEM Fault code No. Symptom Cylinder-#2 intake air pressure sensor: open or short cir- cuit detected. Diagnostic code No. Cylinder-#2 intake air pressure sensor Order Item/components and probable Check or maintenance job Reinstatement cause method Connections • Check the coupler for any pins Turning the •...
Page 393
FUEL INJECTION SYSTEM Fault code No. Symptom Cylinder-#2 intake air pressure sensor: hose system mal- function (clogged or detached hose). Diagnostic code No. Cylinder-#2 intake air pressure sensor Order Item/components and probable Check or maintenance job Reinstatement cause method Cylinder-#2 intake air pressure sensor •...
Page 394
FUEL INJECTION SYSTEM Fault code No. Symptom Engine temperature sensor: open or short circuit detect- Diagnostic code No. Engine temperature sensor Order Item/components and probable Check or maintenance job Reinstatement cause method Installed state of engine temperature Check for looseness or pinching. Turning the sensor.
Page 395
FUEL INJECTION SYSTEM Fault code No. Symptom Malfunction detected in the primary wire of the cylinder-#1 left or right ignition coil. Diagnostic code No. 30, 32 Cylinder-#1 left or right ignition coil Order Item/components and probable Check or maintenance job Reinstatement cause method...
Page 396
FUEL INJECTION SYSTEM Fault code No. Symptom Malfunction detected in the primary wire of the cylinder-#2 left or right ignition coil. Diagnostic code No. 31, 33 Cylinder-#2 left or right ignition coil Order Item/components and probable Check or maintenance job Reinstatement cause method...
Page 397
FUEL INJECTION SYSTEM Fault code No. Symptom Malfunction detected in the primary wire of the cylinder-#1 left or right ignition coil. Diagnostic code No. 30, 32 Cylinder-#1 left or right ignition coil Order Item/components and probable Check or maintenance job Reinstatement cause method...
Page 398
FUEL INJECTION SYSTEM Fault code No. Symptom Malfunction detected in the primary wire of the cylinder-#2 left or right ignition coil. Diagnostic code No. 31, 33 Cylinder-#2 left or right ignition coil Order Item/components and probable Check or maintenance job Reinstatement cause method...
Page 399
FUEL INJECTION SYSTEM Fault code No. Symptom Engine speed is high when the engine is idling. Diagnostic code No. ISC valve Order Item/components and probable Check or maintenance job Reinstatement cause method ECU fuse is blown. • Check the ECU fuse. ISC valve re- Refer to “CHECKING THE turns to its orig-...
Page 400
FUEL INJECTION SYSTEM Fault code No. Symptom Lean angle sensor: open or short circuit detected. Diagnostic code No. Lean angle sensor Order Item/components and probable Check or maintenance job Reinstatement cause method Connections • Check the coupler for any pins Turning the •...
Page 401
FUEL INJECTION SYSTEM Fault code No. Symptom A. No normal signals are received from the speed sensor. B. Open circuit is detected in the neutral switch. Diagnostic code No. Speed sensor Neutral switch Order Item/components and probable Check or maintenance job Reinstatement cause method...
Page 402
FUEL INJECTION SYSTEM Fault code No. Symptom A. No normal signals are received from the speed sensor. B. Open circuit is detected in the neutral switch. Diagnostic code No. Speed sensor Neutral switch Order Item/components and probable Check or maintenance job Reinstatement cause method...
Page 403
FUEL INJECTION SYSTEM Fault code No. Symptom The ECU is unable to monitor the battery voltage (an open or short circuit in the line to the ECU). Diagnostic code No. Fuel system voltage Order Item/components and probable Check or maintenance job Reinstatement cause method...
Page 404
FUEL INJECTION SYSTEM Fault code No. Symptom Power supply to the fuel injection system is not normal. Diagnostic code No. — — Order Item/components and probable Check or maintenance job Reinstatement cause method Connections • Check the coupler for any pins Starting the en- •...
Page 405
FUEL INJECTION SYSTEM Fault code No. Er-1 Symptom No signals are received from the ECU. Diagnostic code No. — — Order Item/components and probable Check or maintenance job Reinstatement cause method Connections • Check the coupler for any pins Turning the •...
Page 406
FUEL INJECTION SYSTEM Fault code No. Er-3 Symptom Data from the ECU cannot be received correctly. Diagnostic code No. — — Order Item/components and probable Check or maintenance job Reinstatement cause method Connections • Check the coupler for any pins Turning the •...
FUEL PUMP SYSTEM EAS27570 TROUBLESHOOTING If the fuel pump fails to operate. NOTE: • Before troubleshooting, remove the following part(s): 1. Rider seat 2. Tool kit tray 3. Rider seat bracket assembly 4. Left side cover 5. Headlight assembly NG → 1.
Page 410
FUEL PUMP SYSTEM NG → 8. Check the entire fuel pump system wiring. Properly connect or repair the fuel pump Refer to “CIRCUIT DIAGRAM” on system wiring. page 7-63. OK ↓ Replace the ECU. 7-66...
Page 417
ELECTRICAL COMPONENTS Check each switch for continuity with the pocket tester. If the continuity reading is incorrect, check the wiring connections and if necessary, replace the switch. ECA14370 CAUTION: Never insert the tester probes into the coupler terminal slots “a”. Always insert the probes from the opposite end of the coupler, taking care not to loosen or damage the leads.
ELECTRICAL COMPONENTS EAS27990 1. Remove: CHECKING THE BULBS AND BULB • Bulb SOCKETS EW1D71009 WARNING NOTE: Do not check any of the lights that use LEDs. Since headlight bulbs get extremely hot, keep flammable products and your hands Check each bulb and bulb socket for damage or away from them until they have cooled wear, proper connections, and also for continuity down.
ELECTRICAL COMPONENTS NOTE: Set the pocket tester selector to “Ω × 1”. Pocket tester 90890-03112 Analog pocket tester YU-03112-C b. If the pocket tester indicates “∞”, replace the fuse. L LLL L LLL L LLL L LLL L LLL Checking the condition of the bulb sockets 3.
ELECTRICAL COMPONENTS cal system, cause the lighting and ignition electrolyte level will drop considerably. systems to malfunction and could possibly Therefore, take special care when charging cause a fire. the battery. L LLL L LLL L LLL L LLL L LLL NOTE: 4.
Page 421
ELECTRICAL COMPONENTS 5. Remove: A. Open-circuit voltage (V) • Battery B. Charging condition of the battery (%) 6. Check: C. Ambient temperature 20 °C (68 °F) • Battery charge M MMM M MMM M MMM M MMM M MMM L LLL L LLL L LLL L LLL...
Page 422
ELECTRICAL COMPONENTS • If the battery becomes hot to the touch at • Standard charging current is reached any time during the charging process, dis- Battery is good. connect the battery charger and let the bat- • Standard charging current is not reached tery cool before reconnecting it.
ELECTRICAL COMPONENTS 12.8 V or more --- Charging is complete. Pocket tester 12.7 V or less --- Recharging is required. 90890-03112 Under 12.0 V --- Replace the battery. Analog pocket tester YU-03112-C L LLL L LLL L LLL L LLL L LLL 8.
ELECTRICAL COMPONENTS Relay unit (fuel pump relay) M MMM M MMM M MMM M MMM M MMM a. Connect the pocket tester (DC 20 V) to the turn signal relay terminal as shown. Pocket tester 90890-03112 Analog pocket tester YU-03112-C •...
ELECTRICAL COMPONENTS c. Check the relay unit (diode) for continuity. Pocket tester d. Check the relay unit (diode) for no continuity. 90890-03112 L LLL L LLL L LLL L LLL L LLL Analog pocket tester YU-03112-C Diode 1 1. Check: NOTE: •...
ELECTRICAL COMPONENTS M MMM M MMM M MMM M MMM M MMM a. Disconnect the spark plug cap from the spark plug. b. Connect the ignition checker “1” as shown. Ignition checker 90890-06754 Opama pet-4000 spark checker YM-34487 c. Measure the spark plug cap resistance. L LLL L LLL L LLL...
ELECTRICAL COMPONENTS • Positive tester probe → Secondary coil resistance gray “1” 8.64–12.96 kΩ • Negative tester probe → black “2” M MMM M MMM M MMM M MMM M MMM a. Disconnect the spark plug cap from the igni- tion coil.
ELECTRICAL COMPONENTS EAS28150 CHECKING THE STATOR COIL 1. Disconnect: • Stator coil coupler (from the rectifier/regulator) 2. Check: • Stator coil resistance Out of specification → Replace the stator coil. Stator coil resistance 0.112–0.168 Ω c. Turn the lean angle sensor to 65°. d.
ELECTRICAL COMPONENTS • Positive tester probe → Charging voltage horn terminal “1” 14 V at 5000 r/min • Negative tester probe → horn terminal “2” M MMM M MMM M MMM M MMM M MMM a. Set the engine tachometer to the cylinder-#1 left spark plug lead or right spark plug lead.
ELECTRICAL COMPONENTS b. Immerse the engine temperature sensor “1” in a container filled with water “2”. NOTE: Make sure that the engine temperature sensor terminals do not get wet. c. Place a thermometer “3” in the water. d. Slowly heat the water, then let it cool down to the specified temperature.
ELECTRICAL COMPONENTS • Positive tester probe → green “1” • Negative tester probe → black “2” b. Move the fuel sender float to maximum “3”/minimum “4” level position. b. Measure the fuel sender resistance. L LLL L LLL L LLL L LLL L LLL ET1D71044...
ELECTRICAL COMPONENTS Pocket tester 90890-03112 Analog pocket tester YU-03112-C • Positive tester probe → white “1” • Negative tester probe → black “2” b. Measure the throttle position sensor maxi- mum resistance. L LLL L LLL L LLL L LLL L LLL 3.
ELECTRICAL COMPONENTS ECA14390 • Positive battery lead → CAUTION: red/blue “2” To prevent damaging the EXUP servo motor, • Negative battery lead → perform this test within a few seconds of black “3” connecting the battery. L LLL L LLL L LLL L LLL L LLL...
Page 435
ELECTRICAL COMPONENTS EW1D71004 WARNING • Handle the air temperature sensor with special care. • Never subject the air temperature sensor to strong shocks. If the air temperature sen- sor is dropped, replace it. 2. Check: • Air temperature sensor resistance Out of specification →...
TROUBLESHOOTING TROUBLESHOOTING ..................8-1 GENERAL INFORMATION ............... 8-1 STARTING FAILURES ................8-1 INCORRECT ENGINE IDLING SPEED ............ 8-1 POOR MEDIUM AND HIGH-SPEED PERFORMANCE ......8-2 FAULTY GEAR SHIFTING ............... 8-2 SHIFT PEDAL DOES NOT MOVE............8-2 JUMPS OUT OF GEAR ................8-2 FAULTY CLUTCH ..................
TROUBLESHOOTING EAS28450 • Sucked-in air TROUBLESHOOTING Electrical system EAS28460 1. Battery GENERAL INFORMATION • Discharged battery NOTE: • Faulty battery The following guide for troubleshooting does not 2. Fuse(s) cover all the possible causes of trouble. It should • Blown, damaged or incorrect fuse be helpful, however, as a guide to basic trouble- •...
TROUBLESHOOTING EAS28710 • Faulty turn signal relay FAULTY LIGHTING OR SIGNALING SYSTEM • Burnt-out turn signal bulb Headlight does not come on Horn does not sound • Wrong headlight bulb • Improperly adjusted horn • Too many electrical accessories • Damaged or faulty horn •...
EAS28740 52. Headlight relay EAS28750 WIRING DIAGRAM COLOR CODE 53. Left handlebar switch Black 54. Clutch switch XV19SW(C)/XV19W(C)/ Brown 55. Dimmer switch XV19MW(C)/XV19CTSW(C)/ Chocolate 56. Turn signal switch XV19CTW(C)/XV19CTMW(C) Dark green 57. Horn switch 2007 Green 58. Select switch 1. AC magneto Gray 59.