Yamaha VX150A Owner's Manual
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Yamaha VX150A Owner's Manual

Yamaha VX150A Owner's Manual

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VX150A
OWNER'S MANUAL
U.S.A.Edition
LIT-18626-04-58

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Summary of Contents for Yamaha VX150A

  • Page 1 VX150A OWNER’S MANUAL U.S.A.Edition LIT-18626-04-58...
  • Page 3 EMU01448 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

    EMU00003 CONTENTS GENERAL INFORMATION BASIC COMPONENTS OPERATION MAINTENANCE TROUBLE RECOVERY INDEX READ THIS OWNER’S MANUAL CAREFULLY BEFORE OPERATING YOUR OUTBOARD MOTOR.

  • Page 5: General Information

    EMU00004 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 (petrol).........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 U.S. Environmental Protection Agency (EPA) regulations 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, odorless gas which may cause brain INFORMATION damage or death when inhaled. Symptoms include nausea, dizziness, 8 Before mounting or operating the out- and 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. Additional publications and information can be obtained from many organiza- tions, including the following: United States Coast Guard Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Affairs...

  • Page 10: Important Labels

    Counterclockwise propellers are marked with a letter "L" after the size indication. The wrong type of propeller could cause the boat to go in an unexpected direction, which could lead to an accident. 6K1-83623-41 YAMAHA WARNING 905011 Hot surface under this cover during and after operation.

  • Page 11: Basic Boating Rules

    EMU00015 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 side. This rule doesn’t apply if both of you will clear one another if you continue on VESSELS your set course and speed. There are three main situations which you may encounter with other vessels which could lead to a collision unless the Steering Rules are followed: Meeting (you are approaching another vessel...
  • Page 13 of its way until you are clear of it. the power-driven vessel, the power- Likewise, if another vessel is passing you, driven vessel has the right-of-way. you should maintain your speed and Sailing vessels should keep clear of direction so that the other vessel can steer any fishing vessel.
  • Page 14 Remember, markings may vary by geo- graphic location. Always consult local boating 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

    EMU00017 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 (Petrol)

    10% and the fuel meets minimum octane ratings. Gasohol containing methanol is not recommended by Yamaha because it can cause fuel system damage or engine performance prob- lems. EMU00858 ENGINE OIL...

  • Page 17: Battery Requirement

    EMU00031 BATTERY REQUIREMENT Do not use the battery that does not meet the specified capacity. If different battery from the specification is used, the electric system may perform poorly or be overloaded, causing electrical system damage. Choose battery which meets the following specifications for Electric start model.
  • Page 18 Conversely, a larger-pitch pro- 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 – MEMO –...

  • Page 21: Basic Components

    EMU00037 Chapter 2 BASIC COMPONENTS MAIN COMPONENTS......2-1 OPERATIONS OF CONTROLS AND OTHER FUNCTIONS ........2-2 Remote control ........2-2 Trim tab ..........2-6 Power trim/tilt switch ......2-7 Digital tachometer........2-8 Digital speedometer......2-10 Fuel management meter ....2-13 Tilt support lever ........2-17 Top cowling lock levers .....2-17 Flushing device........2-17 WARNING SYSTEM ......2-18 Overheat warning.......2-18...

  • Page 22: Main Components

    EMU01206 MAIN COMPONENTS 101103* YAMAHA SPEED Km/h knot mile TRIP TIME BATT mode 101101* 1 Power trim and tilt switch 0 Power trim and tilt unit 2 Flushing device q Cowling release lever 3 Tilt support lever w Top cowling...

  • Page 23: Operations Of Controls And Other Functions

    EMU00039 OPERATIONS OF CONTROLS AND OTHER FUNCTIONS EMU00096 REMOTE CONTROL Both the shifter and the throttle are actu- 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 24 EMU00099 Neutral Interlock Trigger To shift out of Neutral, the neutral inter- lock trigger of the remote control lever must first be pulled up. 000323 EMU00100 Neutral Throttle Lever To open the throttle without shifting into either Forward or Reverse, place the remote control lever in the Neutral posi- tion and lift the neutral throttle lever.
  • Page 25 EMU00934 Engine Stop Lanyard Switch The lock-plate 1 must be attached to the engine stop lanyard switch for the engine to run. The lanyard 2 should be attached to a secure place on the operator’s cloth- ing, or arm or leg. Should the operator fall overboard or leave the helm, the lanyard will pull out the lock plate, stopping igni- tion to the engine.
  • Page 26 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 27: Trim Tab

    EMU00113 TRIM TAB The trim tab should be adjusted so that the steering control can be turned to either the right or left by applying the same amount of force. An improperly adjusted trim tab may cause difficult steering. Always test run after the trim tab has been installed or replaced to be sure steering is correct.

  • Page 28: 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. Pushing the switch “UP” trims the motor DOWN up, then tilts the motor up. Pressing the switch “DN”...

  • Page 29: 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 30 EMU01620 Hour Meter This meter shows the number of hours the engine has been run. It can be set to show the total number of hours or the number of hours for the current trip. The display can also be turned on and off. 8 Changing the display format Pressing the MODE button changes the 001087...

  • Page 31: Digital Speedometer

    Consult your deal- er if the problem cannot be located and corrected. EMU00140 DIGITAL SPEEDOMETER This meter contains the speedometer, fuel YAMAHA meter with warning, trip meter, clock and SPEED Km/h voltmeter with warning. knot mile...
  • Page 32 1 Cap 2 Selector switch (For speed unit) 3 Selector switch (For fuel sender) 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”...
  • Page 33 The fuel level is displayed by eight seg- Km/h ments. When all segments are showing, knot the fuel is full. mile The Yamaha fuel tank sensor is different from a conventional-type sensor. A wrong setting of the selector switch on TRIP TIME BATT 802032 the meter will give incorrect readings.

  • Page 34: Fuel Management Meter

    Do not continue to operate the engine if a warning device has activated. Refer to the TROUBLESHOOTING section in this manual. Consult a Yamaha dealer if the problem cannot be located and corrected. EMU00146 FUEL MANAGEMENT METER Optional equipment...
  • Page 35 EMU00147 Fuel Flow Meter The meter displays fuel flow within one YAMAHA hour, at the rate of current engine opera- FUEL MANAGEMENT tion. If twin engines are installed on your boat, the meter will display total fuel flow of ECON SYNC Port and Starboard side engine.
  • Page 36 (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 37 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 the two 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 38: Tilt Support Lever

    EMU00157 TILT SUPPORT LEVER To keep the outboard motor in the tilted- up position, lock the tilt support lever to the clamp bracket. 403033 EMU00163 TOP COWLING LOCK LEVERS To remove the engine top cowling, pull up the front and rear lock levers. Then lift off the cowling.

  • Page 39: Warning System

    EMU00169 WARNING SYSTEM Do not continue to operate the engine if the warning device has activated. Consult your Yamaha dealer if the problem can- not be located and corrected. EMU00170 OVERHEAT WARNING This engine has an overheat warning device. If the engine temperature rises too high, the warning device will activate.

  • Page 40: Oil Level Warning / Oil Filter Clogging Warning

    EMU00172 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. ( 1 ); Included (—); N/A Warning device Tiller Remote 001054 activation control...

  • Page 41: Operation

    EMU00174 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 CHECKS ......3-8 Operation after a long period of storage...........3-9 BREAKING IN (RUNNING IN) ENGINE ..3-10 STARTING ENGINE .......3-12 WARMING UP ENGINE ......3-15 SHIFTING ..........3-16 Forward ..........3-16...

  • Page 42: Installation

    EMU00175 INSTALLATION Incorrect engine height or obstructions to smooth water flow (such as the design or condition of the boat or accessories such as transom ladders/depth finder trans- ducers) can create airborne water spray while the boat is cruising. Severe engine damage may result if the motor is operat- ed continuously in the presence of air- borne water spray.

  • Page 43: 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 not possible to provide complete instructions every...
  • Page 44 Test runs at different heights can help determine the optimum mounting height. For further details, consult your Yamaha dealer or boat manufacture to determine the proper mounting height. 8 Refer to the section “TRIMMING OUT- BOARD MOTOR” for instructions on...

  • Page 45: Filling Fuel And Engine Oil

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

  • Page 46: Filling Oil

    EMU00190 FILLING OIL (for Precision blend system model) This engine uses the YAMAHA PRECI- SION BLEND SYSTEM, which provides superior lubrication by ensuring the prop- er oil ratio for all operating conditions. No fuel premixing is needed (except during break-in/running-ins). Simply pour gaso- line into the fuel tank and oil into the oil tank.
  • Page 47 When the engine is operated for the first time or stored for a period of time, a min- imum of 5 liters (5.3 US qt, 4.4 Imp qt) of oil should be kept in the remote oil tank. Otherwise, the oil-feed pump chamber will not be filled with oil, and no oil will be supplied.
  • Page 48 EMU00200* Oil Level Indicator The various oil level system functions are as follows: Oil level indi- Oil level indi- Engine oil Remote oil cator (Digital cator (Analog Remarks tank tank tachometer) tachometer) Green More than More than • No refilling necessary. 300 cm 1,500 cm (0.32 US qt,...

  • Page 49: Pre-Operation Checks

    EMU00204 PRE-OPERATION CHECKS 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. Do not start the engine out of water. Overheating and serious engine damage can occur.

  • Page 50: Operation After A Long Period Of Storage

    3) Watch for oil flowing through the oil feed pipes. After any air in the oil lines has been expelled, YAMAHA PRECISION BLEND SYSTEM should supply oil normally. If no oil has begun flowing after 10 minutes of idling, consult your Yamaha dealer.

  • Page 51: Breaking In (Running In) Engine

    EMU01175 BREAKING IN (RUNNING IN) ENGINE Your new engine requires a period of break-in (running-in) to allow mating sur- faces of moving parts to wear-in evenly. Correct break-in (running-in) will help ensure proper performance and longer engine life. 8 Failure to follow the break-in (running- in) procedure may result in reduced engine life or even severe engine dam- age.
  • Page 52 1 hour at a time. 5) After the first 10 hours: Operate the engine normally. Use straight gasoline (petrol) in the fuel tank; YAMAHA PRECISION BLEND SYSTEM provides proper lubrication for normal operation. 3-11...

  • Page 53: 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 54 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 55 EMU00949 Electric Start Model 7) Turn the main switch to “START”, START and hold it for a maximum of 5 sec- onds. 8) Immediately after the engine starts, release the main switch to return it to “ON”. 701022 8 Do not turn the main switch to “START”...

  • Page 56: Warming Up Engine

    Overheating and serious damage could occur. Stop the engine and check to see if the water inlet on the lower cas- 309013 ing is blocked. If the problem cannot be found and corrected, consult your Yamaha dealer. 3-15...

  • Page 57: Shifting

    EMU00261 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). EMU00264 FORWARD Pull up the neutral interlock trigger (If...

  • Page 58: Stopping Engine

    EMU00273 STOPPING ENGINE 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. EMU00276 1) Turn the main switch to “OFF”. START 2) If the fuel joints are provided, discon- nect the fuel line from the motor after stopping the engine.

  • Page 59: 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 60: 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 the trim/tilt angle, also be careful not to pinch any body parts between the drive 701034 unit and clamp bracket. 8 Use caution when trying a trim position for the first time.
  • Page 61 EMU00282 Bow Up When the boat is on plane, a bow-up atti- tude result in less drag, greater stability and efficiency. This is generally when the keel line of the boat is up about 3 to 5 degrees. When trimmed out, the boat may have more tendency to steer to one side or the other.

  • Page 62: Tilting Up/Down

    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 reduce salt corrosion.
  • Page 63 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” until the outboard has tilted up com- pletely.

  • Page 64: Cruising In Other Conditions

    EMU00303 PROCEDURE FOR TILTING DOWN Power trim/tilt model 1) Push the power trim/tilt switch “UP” until the engine is supported by the tilt rod. 2) Release the tilt-support lever. 3) Push the power trim/tilt switch “DN” (Down) to lower the engine to the desired position.

  • Page 65: Maintenance

    EMU00317 Chapter 4 MAINTENANCE SPECIFICATION DATA......4-1 TRANSPORTING AND STORING OUTBOARD MOTOR .......4-2 Trailering outboard motor....4-2 Storing outboard motor ......4-3 PERIODIC MAINTENANCE......4-8 Replacement parts .......4-8 Maintenance chart........4-9 Greasing ..........4-10 Cleaning and adjusting spark plug...4-11 Checking fuel system......4-13 Inspecting fuel filter ......4-14 Adjusting idling speed.......4-15 Checking water in engine oil tank ..4-16 Replacing fuse ........4-17...

  • Page 66: Specification Data

    Recommended engine oil YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TCW3 certified outboard oil Fuel/oil premix ratio Fuel : Oil YAMAHA PRECISION BLEND SYSTEM Engine oil capacity (engine oil tank) l (US qt, Imp qt) 0.9 (0.95, 0.79) (remote oil tank) l (US qt, Imp qt) 10.5 (11.1, 9.24), / 18.0 (19.1, 15.9)

  • Page 67: Transporting And Storing Outboard Motor

    For further details, consult your Yamaha dealer. 8 Never get under the lower unit while it is tilted, even if a motor support bar is used.
  • Page 68 Do not use any chemical goods contain- ing Silicon, Phosphorus or Lead. Otherwise, the oxygen sensor for Electronic Fuel Injection system could be damaged. For the detail, consult your Yamaha dealer to use chemical goods for storage.
  • Page 69 “Yamaha Fuel Conditioner and Stabilizer” (Part No. LUB-FUELC-12- 00) to each gallon of fuel. NOTE: The use of “Yamaha Fuel Conditioner and Stabilizer” eliminates the need to drain the fuel system. Consult your Yamaha dealer or other qualified mechanic if the fuel system is to be drained instead.
  • Page 70 Remove the propeller. 2) Install a flushing attachment to the lower unit. (A flushing attachment is available from a Yamaha dealer). 3) Run the engine at a fast idle for 10~15 minutes supplying water. 4) Just prior to turning off the engine, quickly spray “Yamaha Stor-Rite...
  • Page 71 Also, do not spray near the silencer and oxygen sensor cover or into the engine. Otherwise, the oxygen sensor for Electronic Fuel Injection system could be damaged. 3) Wax the cowling with a non-abrasive wax such as “Yamaha Silicone Wax” (Part No. ACC-11000-15-02).
  • Page 72 EMU00353 Battery Care Battery electrolyte is poisonous and dan- gerous, causing severe burns, etc. It con- tains 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 mag- nesia, beaten egg, or vegetable oil.

  • Page 73: Periodic Maintenance

    If the owner is not familiar with machine servicing, this work should be done by a Yamaha dealer or other quali- fied mechanic. A service manual is available for purchase through a Yamaha dealer for owners who...

  • Page 74: Maintenance Chart

    Frequency of maintenance operations may be adjusted according to the operating con- ditions, but the following table gives general guidelines. The mark (6) 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 75: Greasing

    EMU00366 GREASING Yamaha marine grease (Water resistant grease) 4-10...

  • Page 76: 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 77 Spark plug gap: Refer to “SPECIFICATIONS”, page 4-1. When fitting the plug, always clean the gasket surface and use a new gasket. Wipe off any dirt from the threads and screw in the spark plug to the correct torque. Spark plug torque: Refer to “SPECIFICATIONS”, page 4-1.

  • Page 78: Checking Fuel System

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

  • Page 79: Inspecting Fuel Filter

    Gasoline (petrol) is highly flammable, and its vapors are flammable and explosive. 8 If you have any question about properly doing this procedure, consult your Yamaha dealer. 8 Do not perform this procedure on a hot or running engine. Allow the engine to cool.

  • Page 80: Adjusting Idling Speed

    5) Tighten the ring nut approximately an additional 1/4 turn until ring nut is tight. Align one of the four larger ring nut tabs into the slot of the locking tab. Install the locking tab bolt and tighten. 6) Run the engine and check the filter and lines for leaks.

  • Page 81: Checking Water In Engine Oil Tank

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

  • Page 82: 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 Electrical cover 2 Fuse holder 000501 3 Fuse (30A, 80A × 2) 4 Spare fuse...

  • Page 83: 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- 4-18...

  • Page 84: Checking Propeller

    EMU00388 CHECKING PROPELLER You could be seriously injured if the engine accidentally starts while you are near the propeller. 8 Before inspecting, removing or 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”...
  • Page 85 Otherwise, the propeller could come off during operation and be lost. 1) Apply Yamaha Marine grease or Corrosion resistant grease to the pro- peller-shaft. 2) Install the thrust washer and propeller on the propeller-shaft. 3) Install the spacer and washer. Tighten the propeller nut to the specified torque.

  • Page 86: Changing Gear Oil

    Inspect the used oil after it has been drained. If the oil is milky, water is get- ting into the gear-case which can cause gear damage. Consult a Yamaha dealer 601031* for repair of the lower unit seals. NOTE: For disposal of used oil consult your Yamaha dealer.

  • Page 87: Inspecting And Replacing Anode(S)

    7) Insert and tighten the oil drain plug. EMU00831 INSPECTING AND REPLACING ANODE(S) Yamaha outboard motor is protected from corrosion by a sacrificial anode(s). Check the anode(s) periodically. Remove the scales from surfaces of the anode(s). For the inspection and replacement of the anode(s), consult a Yamaha dealer.

  • Page 88: Checking Battery

    EMU00404 CHECKING BATTERY (for Electric start model) 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 89 8 A poorly maintained battery will quick- ly deteriorate. 8 Ordinary tap-water contains minerals harmful to a battery, and should not be used for topping-up. 1) Check the electrolyte level at least once a month. Fill to the manufactur- er’s recommended level when neces- sary.
  • Page 90 8 Make sure the main switch (on applica- ble models) is “OFF” before working on the battery. 8 Reversal of the battery leads will dam- age the rectifier. 8 Connect the RED lead first when installing the battery and disconnect the RED lead last when removing it.

  • Page 91: Checking Bolts And Nuts

    5 Large black lead 901014* 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 92: Cleaning Cooling-Water Passages

    EMU01172 CLEANING COOLING-WATER PASSAGES Flushing device equipped model Perform this procedure right after opera- tion for the most thorough flushing. 1) After shutting off the engine, unscrew the garden-hose connector 2 from the fitting 1 on the bottom cowling. 2) Screw the garden-hose connector 2 onto a garden hose 3 which is con- nected to a fresh-water supply.

  • Page 93: 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 94 – MEMO –...

  • Page 95: Trouble Recovery

    EMU00414 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 ..5-10 Treatment of submerged motor..5-12...

  • Page 96: 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 97 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 98 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 99 Trouble Possible Cause Remedy 16. Thermostat faulty or clogged. 16. Have serviced by a Yamaha dealer. 17. Air vent screw closed. 17. Open the air vent screw. 18. Fuel pump damaged. 18. Have serviced by a Yamaha dealer. E. Engine power loss.

  • Page 100: Temporary Action In Emergency

    3) However damage is found or not 607011 found, go back to a nearest harbor slowly and carefully. 4) Have a Yamaha dealer inspection of the outboard motor, before operating it again. EMU00419 POWER TRIM/TILT WILL NOT OPERATE...

  • Page 101: Starter Will Not Operate

    EMU00424 STARTER WILL NOT OPERATE If the starter mechanism does not operate (engine cannot be cranked with the starter), the engine can be manually start- ed with an emergency starter rope. However, the engine can not be manually started if the battery has low voltage. If the battery is discharged to 9 volts or below, the electrical fuel pump will not operate.
  • Page 102 EMU00430 Emergency Starting Engine 1) Remove the top cowling. 301022 301021 2) Remove the flywheel cover. 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 103: Engine Fails To Operate

    EMU00438 ENGINE FAILS TO OPERATE If the engine speed becomes erratic or the engine stops unexpectedly, or if the engine does not start, the following emer- gency circuit procedure may allow you to return to port for repairs. Before using this procedure, be sure to check the “TROUBLESHOOTING”...
  • Page 104 If an engine fails to start, use the follow- ing procedure. 1) Adjust the trim angle so that the engine is vertical or trimmed in. 000859 2) Disconnect the Yellow/White emer- gency connector. The ignition timing advance circuit of the microcomputer is bypassed.

  • Page 105: Low Oil Level Warning Activates

    EMU01191 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 remote oil tank 3 to the engine oil tank 2 using the emergency switch 1.
  • Page 106 NOTE: 8 Reserve oil capacity is maximum 1,500 (1.6 US qt, 1.31 Imp qt). 8 The oil feed pump will not operate if the engine is tilted more than 35°. Put the engine in the down position before operating the emergency switch. 5-11...

  • Page 107: Treatment Of Submerged Motor

    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 108 – MEMO –...

  • Page 109: Index

    EMU00450 Chapter 6 INDEX INDEX............6-1...
  • Page 110 Exhaust leakage ........4-17 EMU00451 INDEX Filling fuel ..........3-4 Adjusting idling speed ......4-15 Filling fuel and engine oil......3-4 Filling fuel tank .........4-4 Adjusting trim angle......3-19 Filling oil............3-5 Flushing cooling system Basic boating rules ........1-6 Battery care..........4-7 and fogging engine........4-4 Flushing device ........2-17 Battery requirement ......1-12 Bow down..........3-20 Forward...........3-16...
  • Page 111 Mounting height ........3-3 Throttle friction adjusting screw ....2-5 Tilt support lever........2-17 Mounting the outboard motor ....3-2 Tilting up/down ........3-21 Neutral interlock trigger ......2-3 Top cowling lock levers......2-17 Neutral throttle lever .......2-3 Trailering outboard motor ......4-2 Transporting and storing outboard motor............4-2 Oil level indicator......2-9, 3-7 Oil level warning/oil filter clogging Treatment of submerged motor ..5-12...
  • Page 112 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 regis- tration card for your records.
  • Page 113 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 pur- chased 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 114 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 115 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 116 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 117 Yamaha outside the U.S.A. or Canada, please contact an autho- rized 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 118 Printed in Japan March 2001—0.5 × 1 ! 67M-28199-13 (150LETO) Printed on recycled paper...

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