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OWNER’S MANUAL R125 MOTORCYCLE Read this manual carefully before oper- ating this vehicle. YZF-R125 YZF-R125A 5D7-F8199-E6...
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EAU46091 Read this manual carefully before operating this vehicle. This manual should stay with this vehicle if it is sold.
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If you have any further questions, do not hesitate to contact your Yamaha dealer. The Yamaha team wishes you many safe and pleasant rides. So, remember to put safety first! Yamaha continually seeks advancements in product design and quality. There-...
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Important manual information EAU63350 Particularly important information is distinguished in this manual by the following notations: This is the safety alert symbol. It is used to alert you to potential personal injury haz- ards. Obey all safety messages that follow this symbol to avoid possible injury or death.
Table of contents Safety information ......1-1 Checking the spark plug....6-9 Engine oil and oil filter element ..6-11 Description ........2-1 Coolant ......... 6-14 Left view ..........2-1 Replacing the air filter element Right view........2-2 and cleaning the check hose..6-15 Controls and instruments....2-3 Checking the engine idling speed.........
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Table of contents Replacing a turn signal light bulb ........... 6-37 Replacing the license plate light bulb ........... 6-37 Supporting the motorcycle... 6-38 Front wheel (for non-ABS models)....6-38 Rear wheel (for non-ABS models)....6-40 Troubleshooting......6-41 Troubleshooting charts....6-42 Motorcycle care and storage..
Safety information EAU1028B an accident or equipment damage. See page 4-1 for a list of pre-operation checks. Be a Responsible Owner This motorcycle is designed to As the vehicle’s owner, you are re- carry the operator and a passen- sponsible for the safe and proper oper- ger.
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Safety information Many accidents involve inexperi- • The passenger should always enced operators. In fact, many op- hold onto the operator, the seat erators who have been involved in strap or grab bar, if equipped, accidents do not even have a cur- with both hands and keep both rent motorcycle license.
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Safety information extra care when riding a motorcycle Avoid Carbon Monoxide Poisoning All engine exhaust contains carbon that has added cargo or accessories. monoxide, a deadly gas. Breathing Here, along with the information about carbon monoxide can cause head- accessories below, are some general aches, dizziness, drowsiness, nausea, guidelines to follow if loading cargo to confusion, and eventually death.
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Genuine before using it to make sure that it Yamaha accessories, which are avail- does not in any way reduce able only from a Yamaha dealer, have ground clearance or cornering been designed, tested, and approved clearance, limit suspension travel, by Yamaha for use on your vehicle.
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Safety information operator and may limit control torcycle, such as the frame or up- ability, therefore, such accesso- per front fork triple clamp (and not, ries are not recommended. for example, to rubber-mounted Use caution when adding electri- handlebars or turn signals, or cal accessories.
Instrument and control functions EAU10462 EAU10693 Main switch/steering lock LOCK The steering is locked, and all electrical systems are off. The key can be re- moved. To lock the steering The main switch/steering lock controls the ignition and lighting systems, and is used to lock the steering.
RESET SELECT gine is not working correctly. If this oc- ZAUM1316 1. Turn signal indicator light “ ” curs, have a Yamaha dealer check the 2. Neutral indicator light “ ” self-diagnosis system. 3. High beam indicator light “ ”...
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Instrument and control functions The ABS may not work correctly. If any come on to indicate that the function is of the above occurs, have a Yamaha activated or the light will go off to indi- dealer check the system as soon as cate that the function is deactivated.
Instrument and control functions a speedometer EAUM3422 Multi-function meter unit a tachometer a clock FTRIP x1000r/min a fuel meter km/h km/L/100km a coolant temperature meter an odometer and tripmeter display RESET SELECT a multi-function display ...
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Instrument and control functions To set the clock Tachometer 1. Turn the key to “ON”. 2. Push the “SELECT” button for at least two seconds. x1000r/min 3. When the hour digits start flash- ing, use the “RESET” button to set the hours.
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3 seconds repeatedly. If this diator. occurs, have a Yamaha dealer check If the engine overheats, see page the electrical circuit. 6-43 for further instruction.
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Instrument and control functions ODO (odometer) → TRIP 1 (tripmeter) Multi-function display → TRIP 2 (tripmeter) → ODO (odome- ter) F TRIP km/L ZAUM1307 1. Multi-function display ZAUM1306 The multi-function display is equipped 1. Odometer/tripmeter/fuel reserve tripmeter with the following: ...
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Instrument and control functions “km/L”: The distance that can be SPEED/__km/h”, the oil service re- minder “DIST SERV/__km” in the fol- traveled on 1.0 L of fuel under the lowing order: current riding conditions is shown. “L/100 km”: The amount of fuel C Ave__._km/L →...
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Instrument and control functions “AVE_ _._ MPG” (for the UK only): two seconds. The average speed dis- The average distance that can be play will also reset automatically 4 traveled on 1.0 Imp.gal of fuel is hours after the key was last turned to shown.
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If the low battery indicator comes on If the engine oil is changed before the have a Yamaha dealer check the bat- oil change indicator comes on (i.e. be- tery. fore the set oil service interval has been...
If the display indicates any error codes, note the code number, and then have a ZAUM1163 Yamaha dealer check the vehicle. 1. Engine stop switch “ ” 2. Start switch “ ”...
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Instrument and control functions the multi-function meter unit and page EAU12461 Turn signal switch “ ” 3-3 for information on the tachometer To signal a right-hand turn, push this high-rpm warning light.) switch to “ ”. To signal a left-hand turn, push this switch to “...
Instrument and control functions EAU12822 EAU12872 Clutch lever Shift pedal ZAUM1164 ZAUM1165 1. Clutch lever 1. Shift pedal The clutch lever is located on the left The shift pedal is located on the left side of the handlebar. To disengage side of the motorcycle and is used in the clutch, pull the lever toward the combination with the clutch lever when...
Instrument and control functions EAU12892 EAU12944 Brake lever Brake pedal ZAUM1166 1. Brake lever 1. Brake pedal The brake lever is located on the right The brake pedal is located on the right side of the handlebar. To apply the side of the motorcycle.
This ABS has a test mode which EAU60021 ABS (for ABS models) allows the owner to experience The Yamaha ABS (Anti-lock Brake the pulsation at the brake lever or System) features a dual electronic con- brake pedal when the ABS is op- trol system, which acts on the front and erating.
Instrument and control functions EAUM2082 EAU13213 Fuel tank cap Fuel Make sure there is sufficient gasoline in the tank. EWA10882 WARNING Gasoline and gasoline vapors are extremely flammable. To avoid fires and explosions and to reduce the risk of injury when refueling, follow these instructions.
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Your Yamaha engine has been de- signed to use premium unleaded gas- oline with a research octane number of 95 or higher. If knocking (or pinging)
Instrument and control functions EAU13434 EAUM2461 Catalytic converter Rider seat This model is equipped with a catalytic converter in the exhaust system. To remove the rider seat 1. Insert the key into the seat lock, EWA10863 WARNING and then turn it clockwise. The exhaust system is hot after op- eration.
Instrument and control functions EAU66730 Ignition circuit cut-off system The ignition circuit cut-off system (comprising the sidestand switch, clutch switch and neutral switch) has the following functions. It prevents starting when the transmission is in gear and the sidestand is up, but the clutch le- ver is not pulled.
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Does the engine start? The neutral switch may not be working correctly. The motorcycle should not be ridden until checked by a Yamaha dealer. With the engine still running: 6. Move the sidestand up. 7. Keep the clutch lever pulled.
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided in this manual, have the vehicle inspected by a Yamaha dealer. Before using this vehicle, check the following points:...
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• Check operation. — signals and switches • Correct if necessary. • Check operation of ignition circuit cut-off system. Sidestand switch • If system is not working correctly, have Yamaha dealer 3-19 check vehicle. • Check fluid level. Battery 6-32...
This model is equipped with a lean an- there is a control or function you do not gle sensor to stop the engine in case of understand, ask your Yamaha dealer. a turnover. In this case, the multi-func- EWA10272 tion display indicates error code 30, WARNING but this is not a malfunction.
The neutral indi- the clutch lever pulled and the cator light should come on. If not, sidestand up. ask a Yamaha dealer to check the See page 3-20 for more informa- electrical circuit. tion. 3. Start the engine by pushing the 1.
Operation and important riding points EAU16673 and drive train, which are not Shifting designed withstand shock of forced shifting. ZAUM1167 1. Shift pedal 2. Neutral position Shifting gears lets you control the amount of engine power available for starting off, accelerating, climbing hills, etc.
Operation and important riding points EAU16811 EAU16831 Tips for reducing fuel con- Engine break-in sumption There is never a more important period in the life of your engine than the period Fuel consumption depends largely on between 0 and 1000 km (600 mi). For your riding style.
From 30000 km (17500 mi), repeat the maintenance intervals starting from 6000 km (3500 mi). Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills. EAU69210...
Periodic maintenance and adjustment EAU69250 General maintenance and lubrication chart ODOMETER CHECK OR READING MAINTENANCE JOB ITEM X 1000 km X 1000 mi 10.5 14 √ √ • Clean. 1 * Air filter element √ √ • Replace. Air filter check √...
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Periodic maintenance and adjustment ODOMETER CHECK OR READING MAINTENANCE JOB ITEM X 1000 km X 1000 mi 10.5 14 • Check chain slack, alignment Every 1000 km (600 mi) and af- and condition. ter washing the motorcycle, rid- Drive chain •...
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Periodic maintenance and adjustment ODOMETER CHECK OR READING MAINTENANCE JOB ITEM X 1000 km X 1000 mi 10.5 14 Engine oil filter el- √ √ √ √ √ • Replace. ement • Check coolant level and vehicle √ √ √ √...
Periodic maintenance and adjustment EAU18732 Removing and installing the cowlings and panel ZAUM1170 1. Screw 2. Cowling A ZAUM1169 1. Cowling A To install the cowling 2. Cowling B Place the cowling in the original posi- 3. Cowling C tion, and then install the screws. 4.
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Periodic maintenance and adjustment 2. Fit the projection on the cowling into the slot, and then slide the cowling backward. 3. Install the screws. 4. Install cowling A and panel A. Cowling C To remove the cowling ZAUM1173 Remove the screws, and then pull the 1.
Periodic maintenance and adjustment EAU19633 Checking the spark plug The spark plug is an important engine component, which is easy to check. Since heat and deposits will cause any spark plug to slowly erode, the spark plug should be removed and checked in accordance with the periodic main- tenance and lubrication chart.
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Spark plug: ating improperly. Do not attempt to 12.5 Nm (1.25 m·kgf, 9.04 ft·lbf) diagnose such problems yourself. In- stead, have a Yamaha dealer check the vehicle. If a torque wrench is not available when installing a spark plug, a good 2.
Periodic maintenance and adjustment EAUM3491 Engine oil and oil filter ele- ment The engine oil level should be checked before each ride. In addition, the oil must be changed and the oil filter ele- ment replaced at the intervals specified in the periodic maintenance and lubri- cation chart.
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Periodic maintenance and adjustment 4. Place an oil pan under the engine to collect the used oil. 5. Remove the engine oil filler cap and the drain bolt along with the O-ring, compression spring, and engine oil strainer, to drain the oil from the crankcase.
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Periodic maintenance and adjustment NOTICE: Before installing the 13. Turn the engine off, and then engine oil drain bolt, do not for- check the oil level and correct it if get to install the O-ring, com- necessary. pression spring, and oil strainer 14.
If water has been added to the coolant, have a Yamaha dealer check the anti- freeze content of the coolant as soon as possible, otherwise the effectiveness of the coolant will be reduced.
WARNING! Never attempt to remove periodic maintenance and lubrication the radiator cap when the engine is chart. Have a Yamaha dealer replace hot. [EWA10382] the air filter element more frequently if you are riding in unusually wet or dusty areas.
Adjusting the throttle grip free speed play Check the engine idling speed and, if necessary, have it corrected by a Yamaha dealer. Engine idling speed: 1350–1550 r/min ZAUM1177 1. Throttle grip free play The throttle grip free play should mea- sure 3.0–5.0 mm (0.12–0.20 in) at the...
The valve clearance changes with use, sition. resulting in improper air-fuel mixture and/or engine noise. To prevent this from occurring, the valve clearance must be adjusted by a Yamaha dealer at the intervals specified in the periodic maintenance and lubrication chart. 6-17...
The tires must be checked before each ride. If the center tread depth reaches the specified limit, if the tire has a nail or glass fragments in it, or if the side- wall is cracked, have a Yamaha dealer replace the tire immediately. 6-18...
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EWA10472 their suitability for further use. WARNING EWA10902 Have a Yamaha dealer replace WARNING excessively worn tires. Besides The front and rear tires should being illegal, operating the vehi- be of the same make and de-...
130/70-17 M/C 62H(PIRELLI)- ride. If any damage is found, have 62S(MICHELIN) Manufacturer/model: a Yamaha dealer replace the PIRELLI/SPORT DEMON wheel. Do not attempt even the MICHELIN/PILOT STREET smallest repair to the wheel. A de-...
Periodic maintenance and adjustment EAU22046 Adjusting the clutch lever free play Measure the brake lever free play as shown. 1. Locknut 2. Clutch lever free play adjusting nut (crank- case) 6. To increase the clutch lever free play, turn the clutch lever free play 1.
2.0–5.0 mm (0.08–0.20 in) 3.5–4.5 mm (0.14–0.18 in) Periodically check the brake lever free Periodically check the brake pedal free play and, if necessary, have a Yamaha play and, if necessary, have a Yamaha dealer check the brake system. dealer adjust it.
(a). To make the indicator groove has almost disap- brake light come on later, turn the ad- peared, have a Yamaha dealer replace justing nut in direction (b). the brake pads as a set. For non-ABS models...
Check each rear brake pad for damage and measure the lining thickness. If a brake pad is damaged or if the lining thickness is less than 1.5 mm (0.06 in), have a Yamaha dealer replace the ZAUM1181 1. Minimum level mark brake pads as a set.
Clean the filler cap before re- EAU22733 Changing the brake fluid moving. Use only DOT 4 brake Have a Yamaha dealer change the fluid from a sealed container. brake fluid at the intervals specified in Use only the specified brake flu- the periodic maintenance and lubrica- id;...
3. Tighten the axle nut, then the lock- EAU34318 nuts to their specified torques. To adjust the drive chain slack Consult a Yamaha dealer before ad- justing the drive chain slack. 1. Loosen the axle nut and the lock- nut on each side of the swingarm.
Periodic maintenance and adjustment EAU23026 Tightening torques: Cleaning and lubricating the Axle nut: drive chain 85 Nm (8.5 m·kgf, 61 ft·lbf) The drive chain must be cleaned and Locknut: 16 Nm (1.6 m·kgf, 12 ft·lbf) lubricated at the intervals specified in the periodic maintenance and lubrica- 4.
Periodic maintenance and adjustment EAU23144 EAU23185 Checking and lubricating the Checking and lubricating the brake and clutch levers brake pedal The operation of the brake and clutch The operation of the brake pedal levers should be checked before each should be checked before each ride, ride, and the lever pivots should be lu- and the pedal pivot should be lubricat- bricated if necessary.
EAUM1653 Checking and lubricating the Lubricating the swingarm piv- sidestand The swingarm pivots must be lubricat- ed by a Yamaha dealer at the intervals specified in the periodic maintenance and lubrication chart. Recommended lubricant: Lithium-soap-based grease The operation of the sidestand should...
If any free over. play can be felt, have a Yamaha [EWA10752] 2. While applying the front brake, dealer check or repair the steer- push down hard on the handle- ing.
If there is play in the wheel skin, eyes or clothing and al- hub or if the wheel does not turn ways shield your eyes when smoothly, have a Yamaha dealer working near batteries. In case check the wheel bearings. of contact, administer the fol- lowing FIRST AID.
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Periodic maintenance and adjustment then place it in a cool, dry place. To check the electrolyte level NOTICE: When removing the 1. Place the vehicle on a level sur- face and hold it in an upright posi- battery, be sure the key is tion.
Periodic maintenance and adjustment EAUM3461 YZF-R125 Replacing the fuses 1 2 3 4 5 The fuse boxes, which contains the fuses for the individual circuits, are lo- cated under the rider seat. (See page 3-18.) ZAUM1189 1. Headlight fuse 2. Signaling system fuse 3.
Main fuse: This model is equipped with halogen 20.0 A bulb headlights. If a headlight bulb Ignition fuse: burns out, have a Yamaha dealer re- 7.5 A Signaling system fuse: place it and, if necessary, adjust the 7.5 A headlight beam.
This model is equipped with two auxil- If the tail/brake light does not come on, iary lights. If an auxiliary light bulb have a Yamaha dealer check it. burns out, replace it as follows. 1. Remove the auxiliary light bulb socket (together with the bulb) by pulling it out.
Periodic maintenance and adjustment EAU24205 EAUM3510 Replacing a turn signal light Replacing the license plate bulb light bulb 1. Remove the turn signal light lens 1. Remove the license plate light unit by removing the screw. by removing the screw. ZAUM1190 1.
EWA14841 WARNING when removing the front and rear wheel or performing other mainte- For the ABS model, have a Yamaha nance requiring the motorcycle to dealer remove and install the wheel. stand upright. Check that the motorcy- cle is in a stable and level position be- EAU56531 fore starting any maintenance.
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Periodic maintenance and adjustment 6. Tighten the wheel axle pinch bolt A and pinch bolt B to the specified torques. 7. Retighten the wheel axle pinch bolt A to the specified torque. 8. Tighten the brake caliper bolts to the specified torques. Tightening torques: ZAUM1192 Wheel axle:...
Periodic maintenance and adjustment EAU44802 Rear wheel (for non-ABS models) EWA14841 WARNING For the ABS model, have a Yamaha dealer remove and install the wheel. EAU56701 1. Drive chain slack adjusting bolt 2. Locknut To remove the rear wheel EWA10822 6.
However, should your motorcycle require any repair, take it to a Yamaha dealer, whose skilled technicians have the necessary tools, experience, and know-how to service the motorcycle properly.
2. Compression There is compression. Check the ignition. Operate the electric starter. There is no Have a Yamaha dealer check the vehicle. compression. Wipe off with a dry cloth and correct the 3. Ignition Operate the electric spark plug gap, or starter.
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Start the engine. If the engine overheats again, The coolant level is have a Yamaha dealer check and repair the cooling system. If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant as soon as possible.
Rust and corrosion can develop matte colored finished parts. Be even if high-quality components are sure to consult a Yamaha dealer for used. A rusty exhaust pipe may go un- advice on what products to use be- noticed on a car, however, it detracts fore cleaning the vehicle.
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Motorcycle care and storage fected area any longer than in- scratching. Some cleaning structed. Also, thoroughly rinse compounds for plastic may the area off with water, immedi- leave scratches on the wind- ately dry it, and then apply a cor- shield.
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Consult a Yamaha dealer for ad- 4. To prevent corrosion, it is recom- vice on what products to use. mended to apply a corrosion pro- ...
Motorcycle care and storage head so that the electrodes are EAU43204 Storage grounded. (This will limit spark- ing during the next step.) Short-term d. Turn the engine over several Always store your motorcycle in a cool, times with the starter. (This will dry place and, if necessary, protect it coat the cylinder wall with oil.) against dust with a porous cover.
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Motorcycle care and storage Make any necessary repairs before storing the motorcycle.
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