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   Summary of Contents for Yamaha 115C

  • Page 1

    115C 130C 150C V150C OWNER’S MANUAL U.S.A.Edition LIT-18626-05-45...

  • Page 3

    EMU01449 TO THE OWNER Thank you for choosing a Yamaha out- board motor. This Owner’s manual con- A CAUTION indicates special precautions tains information needed for proper oper- that must be taken to avoid damage to ation, maintenance and care. A thorough the outboard motor.

  • Page 4: Table Of Contents


  • Page 5: General Information

    EMB00010 Chapter 1 GENERAL INFORMATION IDENTIFICATION NUMBERS RECORD ............1-1 Outboard motor serial number...1-1 Key number...........1-1 EMISSION CONTROL INFORMATION...1-2 SAFETY INFORMATION......1-3 IMPORTANT LABELS ......1-5 BASIC BOATING RULES ......1-6 FUELING INSTRUCTIONS.....1-10 Gasoline ..........1-11 Engine oil ..........1-11 BATTERY REQUIREMENT ....1-12 PROPELLER SELECTION .......1-12 START-IN-GEAR PROTECTION ....1-14...

  • Page 6: Identification Numbers Record

    Record your outboard motor serial num- ber in the spaces provided to assist you in 401012 ordering spare parts from your Yamaha dealer or for reference in case your out- board motor is stolen. 1 Outboard motor serial number...

  • Page 7: Emission Control Information

    EMU01385 EMISSION CONTROL INFORMATION EMU01386 NORTH AMERICAN MODELS This engine conforms to U.S. Environ- mental Protection Agency (EPA) regula- ****** tions for marine SI engines. See the label affixed to your engine for details. Approval label of Emission control certificate This label is attached to the bottom cowl- ing.

  • Page 8: Safety Information

    8 This product emits exhaust gases which EMU00917 SAFETY contain carbon monoxide, a colorless, INFORMATION odorless gas which may cause brain damage or death when inhaled. Symp- toms include nausea, dizziness, and 8 Before mounting or operating the out- drowsiness. Keep cockpit and cabin board motor, read this entire manual.

  • Page 9

    8 When a swimmer is in the water near you shift into neutral and shut off the engine. 8 Be informed about boating safety. Addi- tional publications and information can be obtained from many organizations, including the following: United States Coast Guard Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Affairs...

  • Page 10: Important Labels

    Location EMU00140¯ IMPORTANT LABELS WARNING LABELS WARNING Be sure shift control is in neutral ¡ before starting engine. (except 2HP) Do not touch or remove electrical parts ¡ when starting or during operation. Keep hands,hair,and clothes away from flywheel ¡ and other rotating parts while engine is running.

  • Page 11: Basic Boating Rules

    EMB40010 Stand-on Vessel BASIC BOATING RULES The vessel with the right-of-way has the duty to continue its course and speed, (Rules of the road) except to avoid an immediate collision. When you maintain your direction and Just as there are rules which apply when speed, the other vessel will be able to you are driving on streets and high ways, determine how best to avoid you.

  • Page 12

    RULES WHEN ENCOUNTERING other vessel on your port (left) side. This rule doesn’t apply if both of you will clear VESSELS one another if you continue on your set There are three main situations which you course and speed. may encounter with other vessels which could lead to a collision unless the Steering Rules are followed: Meeting...

  • Page 13

    way until you are clear of it. Likewise, if 2. Sailing vessels should keep clear of any another vessel is passing you, you should fishing vessel. maintain your speed and direction so that 3. In a narrow channel, a sailing vessel the other vessel can steer itself around you.

  • Page 14

    Remember, markings may vary by geo- graphic location. Always consult local boat- ing authorities before driving your boat in unfamiliar waters. MAIN CHANNEL BUOYS " 1 " " 3 " " 5 " " 7 " " 6 " LIGHTED BUOY (Port Hand)` C "...

  • Page 15: Fueling Instructions

    EMU00016 FUELING INSTRUCTIONS GASOLINE AND ITS VAPORS ARE HIGH- LY FLAMMABLE AND EXPLOSIVE! 8 Do not smoke when refueling, and keep away from sparks, flames, or other sources of ignition. 8 Stop engine before refueling. 8 Refuel in a well-ventilated area. Refuel portable fuel tanks off the boat.

  • Page 16: Gasoline

    EMU01804 GASOLINE Recommended gasoline: Regular unleaded gasoline with a minimum octane rating of 86 (Pump Octane Number) = (R+M)/2 If knocking or pinging occurs, use a differ- ent brand of gasoline or premium unlead- ed fuel. EMU00027 Gasohol There are two types of gasohol: gasohol containing ethanol and that containing methanol.

  • Page 17: Battery Requirement

    EMU01775 BATTERY REQUIREMENT Do not use a battery that does not meet the specified capacity. If a battery which does not meet specifications is used, the electric system could perform poorly or be overloaded, causing electric system damage. For electric start models, choose a battery which meets the following specifications.

  • Page 18

    Conversely, a larger-pitch pro- 602022 peller is more suitable for a smaller oper- ating load. Yamaha dealers stock a range of pro- pellers, and can advise you and install a propeller on your outboard that is best suited to your application.

  • Page 19: Start-in-gear Protection

    EMU01209 START-IN-GEAR PROTECTION Yamaha outboard motors or Yamaha approved remote control units are equipped with start-in-gear protection device(s). This feature permits the engine to be started only when it is Neutral. Always select Neutral before starting the engine. 1-14...

  • Page 20


  • Page 21: Basic Components

    EMC00010 Chapter 2 BASIC COMPONENTS MAIN COMPONENTS......2-1 OPERATIONS OF CONTROLS AND OTHER FUNCTIONS ........2-3 Remote control ........2-3 Choke knob ...........2-8 Trim tab ..........2-8 Power trim / tilt switch ......2-9 Digital tachometer......2-10 Digital speedometer......2-13 Fuel management meter ....2-16 Tilt support lever ........2-20 Top cowling lock levers .....2-20 Top cowling release lever ....2-20 Flushing device........2-21...

  • Page 22: Main Components

    EMU01206 MAIN COMPONENTS YAMAHA SPEED SPEED Km/h Km/h knot mile TRIP TRIP TIME TIME BATT BATT mode mode 1 Power trim and tilt switch r Cooling water pilot hole * 2 Flushing device * t Remote control box (Side mount type)

  • Page 23

    EMU01206 MAIN COMPONENTS V150 YAMAHA SPEED SPEED Km/h Km/h knot knot mile TRIP TRIP TIME TIME BATT BATT mode mode 1 Power trim and tilt switch 0 Power trim and tilt unit 2 Flushing device q Cowling lock lever 3 Tilt support lever...

  • Page 24: Operations Of Controls And Other Functions

    EMC20010 OPERATIONS OF CONTROLS OTHER FUNCTIONS EMU00096 REMOTE CONTROL Both the shifter and the throttle are actu- 000200 ated by the remote control lever. In addi- tion, this control also has the electrical switches. 1 Remote control lever 2 Neutral interlock trigger 3 Neutral throttle lever 4 Main switch 5 Engine stop lanyard switch...

  • Page 25

    EMC50010* Remote control lever Moving the lever forward from the Neu- tral position engages Forward gear. Pulling the lever back from Neutral engages Reverse. The engine will contin- ue to run at idle until the lever is moved about 35° (a detent can be felt). Moving the lever farther opens the throttle, and 701031 the engine will begin to accelerate.

  • Page 26

    EMC48110 Main switch START The main switch controls the ignition sys- tem; its operation is described below. 8 OFF Electrical circuits switched off. (The key can be removed.) 701021 8 ON Electrical circuits switched on. (The key cannot be removed.) 8 START Starter-motor will turn and start engine.

  • Page 27

    EMC28210 Engine stop lanyard switch The lock-plate on the end of the lanyard must be attached to the engine stop switch for the engine to run. The lanyard should be attached to a secure place on the operator’s clothing, or arm or leg. Should the operator fall overboard or leave the helm, the lanyard will pull out the lock plate, stopping ignition to the...

  • Page 28

    EMU01331 Power Trim/Tilt Switch The power trim/tilt adjusts the motor angle in relation to the transom. The power trim/tilt switch is located on the remote control lever grip. Pushing the switch “UP” trims the motor up, then tilts the motor up. Pressing the switch “DN” tilts the motor down and trims the motor 701034** down.

  • Page 29: Choke Knob

    EMC42010 CHOKE KNOB Pulling out this knob (setting it to ON) sup- plies a rich mixture required to start the engine. NOTE: The choke knob for remote control model has the same function as the choke switch on the remote control box. 305033* EMD04011* TRIM TAB...

  • Page 30: Power Trim/tilt Switch

    EMU01125 POWER TRIM/TILT SWITCH The power trim/tilt adjusts the motor angle in relation to the transom. The power trim/tilt switch is located on the side of the bottom engine cowling. Push- ing the switch “UP” trims the motor up, DOWN then tilts the motor up.

  • Page 31: Digital Tachometer

    EMU01614 DIGITAL TACHOMETER This gauge contains the tachometer, trim meter, hour meter, oil level indicator, and the overheat warning indicator. 1 Tachometer 2 Trim meter 3 Hour meter 4 Oil level indicator 001078 5 Overheat warning indicator 6 Set button 7 Mode button NOTE: All segments of the display will light...

  • Page 32

    EMU01109 Trim Meter This meter shows the trim angle of your outboard motor. NOTE: 8 Memorize the trim angles that work best for your boat under different condi- tions. Adjust the trim angle to the desired setting by operating the power 001050 trim and tilt switch.

  • Page 33

    EMU00138 Oil-Level Indicator This indicator shows the engine oil level. If the oil level falls below the lower limit, the warning indicator will start to blink. Refer to the sections “FILLING OIL” and “OIL LEVEL WARNING” for details. 1 Oil-level indicator 001051 Do not operate the engine without oil.

  • Page 34: Digital Speedometer

    EMD40012 DIGITAL SPEEDOMETER This meter contains the speedometer, fuel YAMAHA meter with warning, trip meter, clock and SPEED Km/h voltmeter with warning. knot mile 1 Speedometer TRIP TIME BATT 2 Fuel meter 3 Trip meter/clock/voltmeter mode 4 Warning indicator 802016*...

  • Page 35

    EMU01274 Trip Meter This meter displays the distance the boat YAMAHA has traveled since the meter was last SPEED Km/h reset. knot Repeatedly push and release the “mode” mile button until the indicator on the face of TRIP TIME BATT the meter points to “TRIP”.

  • Page 36

    The fuel level is displayed by eight seg- ments. When all segments are showing, Km/h knot the fuel is full. The Yamaha fuel tank sensor is different mile from a conventional-type sensor. A wrong setting of the selector switch on TRIP...

  • Page 37: Fuel Management Meter

    EMD42012 FUEL MANAGEMENT METER Optional equipment YAMAHA FUEL MANAGEMENT The meter contains the fuel flow meter, fuel consumption meter, fuel economy Km/L meter, twin engine speed synchronizer, water separator warning indicator. ECON SYNC mode 1 Fuel flow meter 2 Fuel consumption/Fuel economy...

  • Page 38

    NOTE: 8 The meter displays gallon/hour and liter depending upon operator preference. Select the desired unit of measurement by setting the selector switch 1 on the back of the meter during installation. (liter) 8 Fuel consumption meter and Fuel econ- omy meter will indicate same unit of (gallon) measurement.

  • Page 39

    (winter or summer fuel and amount of additives). 8 The Yamaha digital speedometer and fuel management meter calculates speed, miles traveled, and fuel econo- my by water movement at the stern of the boat.

  • Page 40

    EMU01278 FUEL MANAGEMENT Twin Engine Speed Synchronizer This meter displays the difference in engine speed (r/min) between the Port and Starboard engines for reference pur- poses when synchronizing Km/L engines’ speeds. Repeatedly push and release the “mode” button until the indicator on the face of ECON SYNC the meter points to “SYNC”.

  • Page 41: Tilt Support Lever

    EMD60010 TILT SUPPORT LEVER To keep the outboard motor in the tilted-up position, lock the tilt support lever to the clamp bracket. 403033 EMD63210 TOP COWLING LOCK LEVERS To remove the engine top cowling, pull up the front and rear lock levers. Then lift off the cowling.

  • Page 42: Flushing Device

    2) Align the three cowling hooks with the locks on the bottom cowling. 3) Press down on the top of the cowling at the front and both sides of the back until the three locks click. 4) To make sure the cowling is locked properly push the cowling from each side.

  • Page 43: Warning System

    EMD80010 WARNING SYSTEM Do not continue to operate the engine if the warning device has activated. Con- sult your Yamaha dealer if the problem cannot be located and corrected. 001053 EMU01476 OVERHEAT WARNING This engine has an overheat warning device. If the engine temperature rises too high, the warning device will activate.

  • Page 44: Oil Level Warning/oil Filter Clogging Warning

    EMD84012* OIL LEVEL WARNING / OIL FILTER CLOGGING WARNING This engine has an oil level warning sys- tem. If oil level falls below lower limit, the warning device will activate. (2); Included (—); N/A 001054 Warning device Tiller Remote activation control control model...

  • Page 45: Operation

    EMF00010 Chapter 3 OPERATION INSTALLATION ........3-1 Mounting the outboard motor....3-2 FILLING FUEL AND ENGINE OIL ....3-4 Filling fuel..........3-4 Filling oil ..........3-5 PRE-OPERATION CHECK ......3-9 Operation after a long period of storage..........3-10 BREAKING IN ENGINE ......3-11 STARTING ENGINE ......3-13 WARMING UP ENGINE ......3-17 SHIFTING ..........3-18 Forward ..........3-18 Reverse..........3-18...

  • Page 46: Installation

    EMF10010 INSTALLATION Incorrect engine height or obstructions to smooth water flow (such as the design or condition of the boat or acce- ssories such as transom ladders/depth finder transducers) can create airborne water spray while the boat is cruising. Severe engine damage may result if the motor is operated continuously in the presence of airborne water spray.

  • Page 47: Mounting The Outboard Motor

    EMU00176 MOUNTING THE OUTBOARD MOTOR Improper mounting of the outboard motor could result in hazardous condi- tions such as poor handling, loss of con- trol, or fire hazards. Observe the follow- ing: 8 The information presented in this sec- tion is intended as reference only. It is possible provide complete...

  • Page 48

    Overpowering a boat may cause severe instability. Do not install an outboard motor with more horsepower than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate, consult the boat manufac- turer.

  • Page 49: Filling Fuel And Engine Oil

    While many additives available may reduce deposits, Yamaha recommends the use of Ring Free Fuel Additive, available from your Yamaha dealer. Ring Free has repeat- edly proven its ability to clean combustion deposits from inside the engine, notably the critical piston-ring-land area, and fuel sys- tem components.

  • Page 50: Filling Oil

    EMU01800 FILLING OIL This engine uses the oil injection system, which provides superior lubrication by ensuring the proper oil ratio for all operat- ing conditions. No fuel premixing is need- ed (except during break-in). Simply pour gasoline into the fuel tank and oil into the oil tank.

  • Page 51

    2) Turn on the main switch. The oil injection system will automatically feed oil from the remote oil tank to ON START the engine oil tank. 701024 3) Turn the off main switch when the engine oil tank is full. 4) Proceed to start the engine.

  • Page 52

    EMU01825 Using remote oil tank 1) Pour engine oil into the remote oil tank. NOTE: The oil level lines on the remote oil tank indicate the amount of additional oil that 001475 can be added to the tank. The top oil level line indicates approximately 1.9 L (0.5 US gal, 0.4 Imp gal) can be added, and the bottom oil level line indicates approxi-...

  • Page 53

    EMU01543 Oil Level Indicator The various oil level system functions are as follows: Oil level indica- Oil level indica- Engine oil Remote oil tor (Digital tor (Analog Remarks tank tank tachometer) tachometer) Green More than More than • No refilling necessary. 300 cm 1,500 cm (0.32 US qt,...

  • Page 54: Pre-operation Check

    EMF40110 PRE-OPERATION CHECK If any item in the pre-operation check is not working properly, have it inspected and repaired before operating the out- board motor. Otherwise, an accident could occur. Fuel Check to be sure you have plenty of fuel for your trip.

  • Page 55: Operation After A Long Period Of Storage

    212012 tion system should supply oil normal- ly. If no oil is flowing after 10 minutes of idling, consult your Yamaha dealer. Be sure to take the above steps when operating the engine after a long period of storage. Otherwise engine seizure could occur.

  • Page 56: Breaking In Engine

    EMU01776 BREAKING IN ENGINE Your new engine requires a period of break-in to allow mating surfaces of mov- ing parts to wear in evenly. Correct break- in will help ensure proper performance and longer engine life. 8 Failure to follow the break-in procedure could result in reduced engine life or even severe engine damage.

  • Page 57

    EMU01784 Run the engine under load (in gear with a propeller installed) as follows. 1) First 10 minutes: Run the engine at the lowest possi- ble-speed. A fast idle in neutral is best. 2) Next 50 minutes: Do not exceed half throttle (approxi- mately 3,000 r/min).

  • Page 58: Starting Engine

    EMU01197 STARTING ENGINE 8 Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no swimmers in the water near you. 8 When the air vent screw is loosened, gasoline (petrol) vapor will be released.

  • Page 59

    EMU00248 PROCEDURE FOR REMOTE CONTROL MODEL 4) Place the remote control lever in the Neutral position. NOTE: The start-in-gear protection device per- mits the engine to be started only when it is in Neutral. 701015 5) Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg.

  • Page 60

    EMU00948 Electric Start Model 7) Open the throttle slightly without shifting using the neutral throttle lever or the free accelerator. After the engine starts, return the throttle to the original position. NOTE: The rotation angle of the neutral throttle 701014 lever or the free accelerator should be determined upon the engine temperature.

  • Page 61

    8 Do not turn the main switch to “START” when the engine is running. 8 Do not keep the starter motor turning for more than 5 seconds. The starter can be damaged. The battery will also run down quickly, making it harder to start the engine.

  • Page 62: Warming Up Engine

    Overheating and serious dam- age could occur. Stop the engine and check to see if the water inlet on the lower casing is blocked. If the problem cannot be found and corrected, consult your Yamaha dealer. 3-17...

  • Page 63: Shifting

    EMG20310 SHIFTING Before shifting, make sure there are no swimmers or obstacles in the water near you. To change the shifting position from for- ward to reverse or vice-versa, close the throttle first so that the engine idles (or runs at low speeds). FORWARD Pull up the neutral interlock trigger (If equipped) and move the remote control...

  • Page 64: Stopping Engine

    EMG38010 STOPPING ENGINE START Let it cool off for a few minutes at idle or low speed first. Stopping the engine immediately after operating at high speed is not recommended. 701023 EMG41511 1) Turn the main switch to “OFF”. NOTE: The engine can also be stopped by pulling the lanyard from the engine stop switch (then turning the main switch to...

  • Page 65: Trimming Outboard Motor

    EMU01412 TRIMMING OUTBOARD MOTOR The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. The correct trim angle will help improve performance and fuel economy while reducing strain on the engine.

  • Page 66: Adjusting Trim Angle

    ADJUSTING TRIM ANGLE EMU01401 Power Trim/Tilt Model 8 Be sure all people are clear of the out- board motor when adjusting trim/tilt angle, also be careful not to pinch any body parts between the drive unit and clamp bracket. 8 Use caution when trying a trim position for the first time.

  • Page 67

    EMU19160 Trim angle settings and boat handling When the boat is on plane, a bow-up atti- tude results in less drag, greater stability and efficiency. This is generally when the keel line of the boat is up about 3 to 5 degrees.

  • Page 68: Tilting Up/down

    NOTE: Depending on the type of boat, the out- board motor trim angle may have little effect on the trim of the boat when oper- ating. EMU01200 TILTING UP/DOWN If the engine will be stopped for some time, or if the boat is moored in shallows, the engine should be tilted up to protect the propeller and casing from damage by collision with obstructions, and also to...

  • Page 69

    EMU01201 PROCEDURE FOR TILTING UP Power trim/tilt model 1) If there is a fuel joint or a fuel cock on the boat, disconnect the fuel line or close the fuel cock. 2) Push the power trim/tilt switch “UP” DOWN until the outboard has tilted up com- pletely.

  • Page 70: Cruising In Other Conditions

    4) Once the engine is supported with the tilt-support lever, push the power trim/tilt switch DOWN to retract the trim rods. Be sure to retract the trim rods complete- ly during mooring. This protects the rods from marine growths and corrosion 411014 which could damage the power trim/tilt mechanism.

  • Page 71: Maintenance

    EMK00010 Chapter 4 MAINTENANCE SPECIFICATIONS ........4-1 TRANSPORTING AND STORING OUTBOARD MOTOR .......4-3 Trailering outboard motor....4-3 Storing outboard motor ......4-4 PERIODIC MAINTENANCE......4-8 Replacement parts .......4-8 Maintenance chart........4-9 Cleaning and adjusting spark plug...4-10 Checking top cowling ......4-11 Checking fuel system......4-12 Cleaning fuel filter ......4-13 Inspecting idling speed......4-14 Checking water trap under engine oil tank ..........4-15...

  • Page 72: Specifications

    EMK10010 SPECIFICATIONS Model Unit 115TRC Item DIMENSIONS 9 Overall Length mm (in.) 808 (31.8) 9 Overall Height mm (in.) 1,472 (58.0)/1,599 (63.0) 9 Overall Width mm (in.) 582 (22.9) 9 Transom height mm (in.) 516 (20.3)/642 (25.3) 9 Weight* kg (lb.) 163 (359)/167 (368) PERFORMANCE 9 Full throttle operating range...

  • Page 73

    130TRC 150TRC V150TRC 808 (31.8) 823 (32.4) 823 (32.4) 1,472 (58.0)/1,599 (22.9) —/1,742 (68.6) 1,637 (64.4)/— 582 (22.9) 577 (22.7) 577 (22.7) 516 (20.3)/642 (25.3) —/642 (25.3) 516 (20.3)/— 163 (359)/167 (368) —/194 (428) 190 (419)/— 5,000~6,000 4,500 ~ 5,500 4,500 ~ 5,500 95.6 (130) at 5,500 r/min 110.3 (150) at 5,000 r/min...

  • Page 74: Transporting And Storing Outboard Motor

    EMU01369* TRANSPORTING AND STORING OUTBOARD MOTOR Leaking fuel is a fire hazard. When trans- porting and storing the outboard motor, close the air vent screw and fuel cock to prevent fuel from leaking. TRAILERING OUTBOARD MOTOR The motor should be trailered and stored in the normal running position.

  • Page 75

    Filling Fuel Tank Fill the fuel tank with fresh fuel and add one ounce of “Yamaha fuel conditioner and sta- bilizer” (Part No. LUB-FUELC-12-00) to each gallon of fuel. NOTE:...

  • Page 76

    3) Run the engine at a fast idle for 10~15 minutes. 4) Just prior to turning off the engine, quickly spray “Yamaha Stor-Rite Engine Fogging Oil (Part No. LUB-STRRT-12- 00) alternately into each carburetor. When properly done, the engine will smoke excessively and almost stall.

  • Page 77

    EMK27010* Cleaning and Anti-corrosion Measure 1) Wash down the exterior of the outboard with fresh water and dry off completely. 2) Spray the engine’s exterior with Yamaha Silicone Protectant (Part No. LUB-SILC- NE-13-00). 3) Wax the cowling with a non-abrasive wax such as Yamaha Silicone Wax (Part No.

  • Page 78

    EMK28010* Battery Care Battery electrolyte is poisonous and dangerous, causing severe burns, etc. It contains sulfuric acid. Avoid contact with skin, eyes, or clothing. Antidote: EXTERNAL; Flush with water. INTERNAL; Drink large quantities of water or milk. Follow with milk of magne- sia, beaten egg, or vegetable oil.

  • Page 79: Periodic Maintenance

    Be sure to turn off the engine when you perform maintenance unless otherwise specified. If the owner is not familiar with machine servicing, this work should be done by a Yamaha dealer or other quali- fied mechanic. Maintenance, replacement, or repair of the emission control devices and systems may be performed by any marine engine repair establishment or individual.

  • Page 80: Maintenance Chart

    Refer to the sections in this chapter for explanations of each owner-specific action. The mark (G) indicates the check-ups which you may carry out yourself. The mark (1) indicates work to be carried out by your Yamaha dealer. Initial Every...

  • Page 81: Cleaning And Adjusting Spark Plug

    Do not attempt to diagnose any problems yourself. Instead, take the outboard motor to a Yamaha dealer. You should periodically remove and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode.

  • Page 82: Checking Top Cowling

    1 Spark plug gap 2 Spark plug I.D. mark (NGK) 903022 EMU16350 CHECKING TOP COWLING Check the fitting of the top cowling by pushing it with both hands. If the fitting is loose have it repaired by a Yamaha dealer. 4-11...

  • Page 83: Checking Fuel System

    106031 Check the fuel line for leaks, cracks, or mal- functions. If any problem is found, it should be repaired immediately by Yamaha dealer or other qualified mechanic. Checking points 8 Fuel system parts leakage. 8 Fuel hose joint leakage.

  • Page 84: Cleaning Fuel Filter

    3 to make sure they are in good con- dition. Replace them if necessary. If any water is found in the fuel, the Yamaha portable fuel tank or other fuel tanks should be checked and cleaned. 4) Reinstall the filter element in the cup.

  • Page 85: Inspecting Idling Speed

    5) Attach the filter assembly to the bracket so that the fuel hoses are attached to the filter assembly. 6) Run the engine and check the filter and lines for leaks. EMU09912 INSPECTING IDLING SPEED 8 Do not touch or remove electrical parts when starting or during operation.

  • Page 86: Checking Water Trap Under Engine Oil Tank

    CHECKING WATER TRAP UNDER ENGINE OIL TANK There is a trap at the bottom of the engine oil tank. If water or foreign matter is visible in this trap, consult a Yamaha dealer. 1 Trap 2 Engine oil tank 213021...

  • Page 87: Replacing Fuse

    This could cause electrical system damage and a fire hazard. NOTE: If the new fuse blows again immediately, consult a Yamaha dealer. 1 Fuse holder 2 Fuse (20A/30A) 205026* EMK78010 CHECKING WIRING AND...

  • Page 88: Greasing

    EMU00366 GREASING Yamaha marine grease (Water resistant grease) 103061 4-17...

  • Page 89

    EMU00366 GREASING Yamaha marine grease (Water resistant grease) 103062 4-18...

  • Page 90: Checking Power Trim And Tilt System

    8) Operate the motor to tilt down. Check that the tilt rod and trim rods operate smoothly. NOTE: If any operation is abnormal, consult a Yamaha dealer. Recommended fluid; Yamaha power trim & tilt fluid or ATF (DEXRON- 4-19...

  • Page 91: Checking Propeller

    EML08210* CHECKING PROPELLER You could be seriously injured if the engine accidentally starts while you are near the propeller. 8 Before inspecting, removing installing the propeller, remove the 210012 spark plug caps from the spark plugs. Also, put the shift control in Neutral, put the main switch in the OFF posi- tion and remove the key, and remove the lanyard from the engine stop...

  • Page 92

    5 Propeller nut 3 Spacer 6 Cotter pin 602041 [How to install propeller] 1) Apply Yamaha Marine grease A or Marine grease (water-resistant grease) to the propeller-shaft. 2) Slide the propeller over the propeller- shaft. Be sure to install the thrust washer...

  • Page 93: Changing Gear Oil

    Inspect the used oil after it has been drained. If the oil is milky, water is get- 000565 ting into the gear-case which can cause gear damage. Consult a Yamaha dealer for repair of the lower unit seals. NOTE: For disposal of used oil consult your Yamaha dealer.

  • Page 94: Inspecting And Replacing Anode(s)

    Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a Yamaha dealer for replacement of external anodes. 603024 Do not paint anodes, as this would ren- der them ineffective.

  • Page 95: Checking Battery

    EMU04041 CHECKING BATTERY (for Electric start models) Battery electrolytic fluid is dangerous; it contains sulfuric acid and therefore is poi- sonous and highly caustic. Always follow these preventive mea- sures: 8 Avoid bodily contact with electrolytic fluid as it can cause severe burns or permanent eye injury.

  • Page 96

    3) If the battery will be stored for longer than a month, check the specific grav- ity of the fluid at least once a month and recharge the battery when it is low. NOTE: Consult a Yamaha dealer when charging or re-charging batteries. 4-25...

  • Page 97

    EMU01304 Connecting the Battery Mount the battery holder securely in a dry, well-ventilated, vibration-free loca- tion in the boat. Install the fully charged battery in the holder. 8 Make sure the main switch (on applica- ble models) is “OFF” before working on the battery.

  • Page 98

    901014 5 Large black lead 6 Negative connecting cable NOTE: If a battery selector switch is desired, con- sult your YAMAHA dealer about correct wiring. EMU01280 Disconnecting the Battery Disconnect the BLACK lead from the NEG- ATIVE (-) terminal first. Then disconnect the RED lead from the POSITIVE (+) termi- nal.

  • Page 99: Checking Bolts And Nuts

    EML40010 CHECKING BOLTS AND NUTS 1) Check that bolts securing the cylinder head and engine and the nut securing the flywheel are tightened with their specified tightening torques. 2) Check the tightening torques of other bolts and nuts. EML42111 MOTOR EXTERIOR Cleaning the Outboard Motor After use, wash the exterior of the out- board with fresh water.

  • Page 100: Coating The Boat Bottom

    Check the motor for scratches, nicks, or flaking paint. Areas with damaged paint are more likely to corrode. If necessary, clean and paint the areas. A touch-up paint is available from a Yamaha dealer. EMU00413 COATING THE BOAT BOTTOM A clean hull improves boat performance.

  • Page 101: Trouble Recovery

    EMN00010 Chapter 5 TROUBLE RECOVERY TROUBLESHOOTING ......5-1 TEMPORARY ACTION IN EMERGENCY ........5-5 Impact damage........5-5 Power trim / tilt will not operate ..5-5 Starter will not operate ......5-6 Engine fails to operate ......5-8 Low oil level warning activates...5-9 Top cowling does not unlock....5-10 Treatment of submerged motor..5-11...

  • Page 102: Troubleshooting

    A problem in the fuel, compression, or ignition systems can cause poor starting, loss of power, or other problems. The troubleshooting chart describes basic checks and possi- ble remedies. (This chart covers all Yamaha outboard motors. Therefore, some items may not apply to your model.) If your outboard motor requires repair, bring it to a Yamaha dealer.

  • Page 103

    3. Fill tank with clean, fresh fuel. 4. Fuel filter clogged. 4. Clean or replace filter. 5. Failed ignition parts. 5. Have serviced by a Yamaha dealer. 6. Warning system activated. 6. Find and correct cause of warning. 7. Spark plug gap incorrect.

  • Page 104

    5. Engine oil contaminated or 5. Replace oil with fresh, specified sounds or deteriorated. type. indicator lamp 6. Oil filter clogged. 6. Have serviced by a Yamaha lights. dealer. 7. Oil feed/injection pump 7. Have serviced by a Yamaha malfunctions. dealer.

  • Page 105

    13. Check wires for wear or breaks. ignition wiring. Tighten all loose connections. Replace worn or broken wires. 14. Failed ignition parts. 14. Have serviced by a Yamaha dealer. 15. Specified engine oil not used. 15. Check and replace oil with specified type.

  • Page 106: Temporary Action In Emergency

    3) Whether damage is found or not, 607011 return to the nearest harbor slowly and carefully. 4) Have a Yamaha dealer inspect the outboard motor before operating it again. EMG65210 POWER TRIM / TILT WILL NOT...

  • Page 107: Starter Will Not Operate

    EMN30210 STARTER WILL NOT OPERATE If the starter mechanism does not operate (engine cannot be cranked with the starter), the engine can be started with an emer- gency starter rope. 8 Use this procedure only in an emer- gency and only to return to port for repairs.

  • Page 108

    Procedure 1) Remove the top cowling. 2) Remove the flywheel cover by removing the bolts. 3) Prepare the engine for starting. See STARTING ENGINE for procedures. Be sure the engine is in Neutral and that the lanyard is attached to the engine stop switch.

  • Page 109: Engine Fails To Operate

    EMN32110 ENGINE FAILS TO OPERATE If battery voltage is low or in the unlikely event of an ignition system malfunction, the engine speed may become erratic or the engine may stop. In such a case, discon- nect the connection on the yellow cord (emergency circuit) to return to port.

  • Page 110: Low Oil Level Warning Activates

    EMU19930 LOW OIL LEVEL WARNING ACTIVATES If the oil level is allowed to drop too low, the red segment will appear on the oil level indicator, the buzzer will sound, and engine speed will be limited to about 2,000 r/min. If this happens, a reserve amount of oil can be pumped from the 218011* remote oil tank 3 to the engine oil tank 2...

  • Page 111: Top Cowling Does Not Unlock

    NOTE: 8 Reserve oil capacity is maximum 1,500 (1.6 US qt, 1.31 Imp qt). 8 Put the engine in the down position before operating the emergency switch. EMD64111* TOP COWLING DOES NOT UNLOCK If the top cowling stays locked when the release lever is operated, the cable may be damaged or misadjusted.

  • Page 112: Treatment Of Submerged Motor

    107013 emergency starter rope. 5) Take the outboard motor to a Yamaha dealer as soon as possible. Do not attempt to run the motor until it has been completely inspected.

  • Page 113: Index

    EMP00010 Chapter 6 INDEX INDEX............6-1...

  • Page 114

    EMR80000 Engine fails to operate......5-8 INDEX Engine oil ..........1-11 Engine stop lanyard switch.....2-6 Exhaust leakage ........4-16 Adjusting trim angle......3-21 Basic boating rules ........1-6 Filling fuel ..........3-4 Filling fuel and engine oil......3-4 Battery care..........4-8 Battery requirement ......1-12 Filling fuel tank .........4-4 Breaking in engine .........3-11 Filling oil............3-5 Flushing cooling system and fogging...

  • Page 115: Propeller Selection

    Maintenance chart .........4-10 Motor exterior ........4-28 Tachometer..........2-10 Mounting height ........3-3 Temporary action in emergency ....5-5 Mounting the outboard motor ....3-2 Throttle friction adjusting screw ....2-7 Tilt support lever........2-20 Neutral interlock trigger ......2-4 Tilting up/down ........3-23 Neutral throttle lever .......2-4 Top cowling does not unlock ....5-10 Top cowling lock levers......2-20 Oil level indicator......2-12,3-8 Top cowling release lever .....2-20...

  • Page 116

    1. Be sure your new Yamaha is registered for warranty. Your boat dealer should do this at the time of sale. Make sure your dealer gives you a copy of the completed Yamaha registration card for your records.

  • Page 117

    5. Your warranty applies specifically to repairs made in the country of purchase. If your U.S.-purchased Yamaha needs warranty service while in Canada, or your Canadian purchased Yamaha needs service while in the United States, Yamaha will assist the local dealer whenever possible. However, some products available in one country may not be sold or serviced in the other.

  • Page 118

    Owner’s Manual. The owner of the outboard motor shall give notice to an authorized Yamaha marine dealer of any and all apparent defects within ten (10) days of discovery and make the motor available at that time for inspection and repairs at the dealer’s place of business.

  • Page 119

    TRANSFER OF WARRANTY. Transfer of the warranty from the original purchaser to any subsequent purchaser is possible by having the motor inspected by an authorized Yamaha outboard dealer and requesting the dealer to submit a change of registration to Yamaha Motor Corporation, U.S.A.

  • Page 120

    The federal government requires each manufacturer of a motor vehicle to maintain a complete, up-to-date list of all first purchasers against the possibility of a safety-related defect and recall. This list is complied from the purchase registrations sent to Yamaha Motor Corporation, U.S.A.

  • Page 121

    Yamaha outside the U.S.A. or Canada, please contact an authorized Yamaha dealer in your country. Keep a copy of your sales contract or invoice for the purchase of your Yamaha and present it if you need warranty repairs. This document should show the date of purchase, which is important evidence the repairing dealer will need to be sure your Yamaha is covered by warranty.

  • Page 122

    Printed in Japan March 2003-0.5 × 1 ! 64C-28199-18 (115CETO, 130BETO, 150FETO, 150GETO) Printed on recycled paper...

  • Page 123


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This manual also for:

150c, 130c, V150c

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