Yamaha C40A Owner's Manual
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Yamaha C40A Owner's Manual

Yamaha C40A Owner's Manual

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C40A
C50A
OWNER'S MANUAL
U.S.A.Edition
LIT-18626-04-75

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Summary of Contents for Yamaha C40A

  • Page 1 C40A C50A OWNER’S MANUAL U.S.A.Edition LIT-18626-04-75...
  • 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 5: Table Of Contents

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

  • Page 7: 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 (Petrol).........1-10 Engine oil ..........1-11 BATTERY REQUIREMENT ....1-12 PROPELLER SELECTION .......1-12 START-IN-GEAR PROTECTION ....1-14...

  • Page 8: 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 9: 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 10: 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 11 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 informa- tion can be obtained from many orga- nizations, including the following: United States Coast Guard Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Affairs...

  • Page 12: Important Labels

    EMB30010 IMPORTANT LABELS WARNING LABELS WARNING Be sure shift control is in neutral before starting engine. (except 2HP) Do not touch or remove electrical parts 202016* when starting or during operation. Keep hands,hair,and clothes away from flywheel and other rotating parts while engine is running. 6A1-83625-41 CAUTION LABELS CAUTION...

  • Page 13: 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 14 RULES WHEN ENCOUNTERING VES- will clear one another if you continue on your set course and speed. SELS There are three main situations which you may encounter with other vessels which could lead to a collision unless the Steer- ing Rules are followed: Meeting (you are approaching another vessel head-on) Crossing (you are travelling across the...
  • Page 15 its course and speed. You must stay out Sailing vessel right-of-way of its way until you are clear of it. Like- Sailing vessels should normally be given wise, if another vessel is passing you, you the right-of-way. The exceptions to this should maintain your speed and direction are: so that the other vessel can steer itself...
  • Page 16 tion. These markers are white with black letters and orange boarders. They signify speed zones, restricted areas, danger areas, and general information. Remember, markings may vary by geo- graphic location. Always consult local boating authorities before driving your boat in unfamiliar waters. MAIN CHANNEL BUOYS "...

  • Page 17: 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 18: Engine Oil

    If knocking or pinging occurs, use a differ- ent brand of gasoline or premium unlead- ed fuel. If unleaded gasoline is not avail- able, then leaded regular gasoline can be used. EMU00027 Gasohol There are two types of gasohol: gasohol containing ethanol and that containing methanol.

  • Page 19: 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 20 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 21: Start-In-Gear Protection

    EMU01209 START-IN-GEAR PROTECTION Yamaha outboard motors or Yamaha approved remote control units 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 22 – MEMO –...

  • Page 23: Basic Components

    EMC00010 Chapter 2 BASIC COMPONENTS MAIN COMPONENTS......2-1 OPERATIONS OF CONTROLS AND OTHER FUNCTIONS ........2-2 Fuel tank ..........2-2 Remote control ........2-3 Trim tab ..........2-7 Trim angle adjusting rod .....2-7 Tilt support lever ........2-8 Top cowling lock lever ......2-8 WARNING SYSTEM.........2-9 Overheat warning.........2-9...

  • Page 24: Main Components

    EMU01206 MAIN COMPONENTS 902063 101142* 1 Clamp bracket 7 Anode 2 Anode 8 Trim angle adjusting-rod 3 Battery lead 9 Tilt-support lever 4 Cooling water inlet 0 Top cowling 5 Trim tab q Fuel hose 6 Anti-cavitation plate * May not be exactly as shown; also may not be included as standard equipment on all models.

  • Page 25: Operations Of Controls And Other Functions

    EMC20010 OPERATIONS OF CONTROLS OTHER FUNCTIONS EMC21111 FUEL TANK If your model was equipped with a portable fuel tank, its function is as fol- lows. 1 Fuel hose joint 2 Fuel meter(If equipped) 3 Fuel tank cap 4 Air vent screw(If equipped) Fuel hose joint This connector is provided for connecting or disconnecting fuel hose.

  • Page 26: Remote Control

    EMC80612 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 701011* 4 Main switch 5 Engine stop lanyard switch 6 Power trim and tilt switch...
  • Page 27 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. NOTE: The neutral throttle lever will operate only when the remote control lever is in Neu- tral.
  • Page 28 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 29 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 30: Trim Tab

    EMD04011* 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 31: 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. 403011 EMD62010 TOP COWLING LOCK LEVER To remove the engine top cowling, push the lock lever downward. Then lift off the cowling.

  • Page 32: Warning System

    EMD80010 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 33: Operation

    EMF00010 Chapter 3 OPERATION INSTALLATION ........3-1 Mounting the outboard motor....3-2 FILLING FUEL AMD ENGINE OIL ...3-4 Filling fuel..........3-4 Gasoline (petrol) and oil mixing ..3-5 PRE-OPERATION CHECKS ......3-7 BREAKING IN (RUNNING IN) ENGINE ..3-8 STARTING ENGINE .......3-10 WARMING UP ENGINE ......3-13 SHIFTING ..........3-14 Forward ..........3-14 Reverse..........3-14...

  • Page 34: Installation

    EMF10010 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 35: 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 36 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 37: Filling Fuel And Engine Oil

    EMU00186 FILLING FUEL AND ENGINE OIL EMU01031 FILLING FUEL 1) Remove the fuel tank cap. 2) Fill the fuel tank carefully. 3) Close the cap securely after refueling. 902055 Wipe up any spilled fuel. EMU01019 Ring Free Fuel Additive Gasoline is a precise blend of many differ- ent substances, each chosen to give cer- tain characteristics.

  • Page 38: Gasoline (Petrol) And Oil Mixing

    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 39 8 Avoid using any oil other than the des- ignated type. 8 Use a thoroughly blended fuel-oil mix- ture. 8 If the mixture is not thoroughly blend- ed, or if the mixing ratio is incorrect, the following problems could occur: Low oil ratio: Lack of oil could cause major engine trouble, such as piston seizure.

  • Page 40: Pre-Operation Checks

    EMF40111 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. Fuel 8 Check to be sure you have plenty of fuel for your trip.

  • Page 41: Breaking In (Running In) Engine

    EMF50011 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. Failure to follow the break-in (running-in) procedure may result in reduced engine life or even severe engine damage.
  • Page 42 3) Second hour: Accelerate at full throttle onto plane, then reduce engine speed to three- quarter throttle (approximately 4,000 r/min). Vary engine speed occasional- ly. Run at full throttle for one minute, then allow about 10 minutes of opera- tion at three-quarter throttle or less to let the engine cool.

  • Page 43: Starting Engine

    EMU01147 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 44 3) Squeeze the primer bulb with the out- let end up until you feel it become firm. 902025 EMU00247 PROCEDURE FOR REMOTE CONTROL MODEL 4) Place the remote control lever in the Neutral position. NOTE: The start-in-gear protection device pre- vents the engine from starting except when in Neutral.
  • Page 45 EMU00254 Electric Start Model 7) Turn the main switch to “START”, START and hold it for a maximum of 5 sec- onds. 8) Immediately the engine starts, release the main switch to return it to “ON”. 8 Do not turn the main switch to 701022 “START”...

  • Page 46: Warming Up Engine

    EMG00210 WARMING UP ENGINE 1) Before beginning operation, allow the engine to warm up at idling speed for 3 minutes. (Failure to do this will shorten engine life.) 2) Check for a steady flow of water from 309014 the cooling-water pilot hole. A continuous flow of water from the pilot hole shows that the water pump is pumping water through the cooling pas-...

  • Page 47: 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 48: Stopping Engine

    EMG38010 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. EMG41211 PROCEDURE START 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 49: 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 50: 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 51 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 52: 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 53 EMU00293 PROCEDURE FOR TILTING UP Power trim/tilt model 1) Remove the fuel-line connection from the motor. 304015 2) Push the power trim/tilt switch “UP” until the outboard has tilted up com- pletely. 701046 3) Turn the tilt-support lever toward engine bracket support engine.

  • Page 54: Cruising In Other Conditions

    EMH60010 CRUISING IN OTHER CONDITIONS CRUISING IN SALT WATER After operating in salt water, wash out the cooling-water passages with fresh water to prevent them from becoming clogged- up with salt deposits. NOTE: Refer to cooling system flushing instruc- tions in “TRANSPORTING AND STORING OUTBOARD MOTOR”.

  • Page 55: Maintenance

    EMK00010 Chapter 4 MAINTENANCE SPECIFICATION DATA......4-1 TRANSPORTING AND STORING OUTBOARD MOTOR .......4-3 Trailering outboard motor....4-3 Storing outboard motor ......4-4 PERIODIC MAINTENANCE......4-9 Replacement parts .......4-9 Maintenance chart......4-10 Greasing ..........4-11 Cleaning and adjusting spark plug...4-12 Checking fuel system......4-14 Cleaning fuel filter ......4-15 Adjusting idling speed.......4-16 Replacing fuse ........4-17 Checking wiring and connectors ..4-17...

  • Page 56: Specification Data

    EMK10011* SPECIFICATION DATA Model Unit C40TRA Item DIMENSIONS 8Overall Length mm (in.) 646 (25.4) 8Overall Width mm (in.) 350 (13.8) 8Overall Height mm (in.) 1,319 (51.9) 8Transom height mm (in.) 533 (21.0) 8Weight kg (lb.) 87 (192) PERFORMANCE 8Full throttle operating range r/min 4,500 ~ 5,500 8Maximum output...
  • Page 57 C50TRA — — 670 (26.4) 360 (14.2) 1,319 (51.9) 533 (21.0) 87 (192) 4,500 ~ 5,500 36.8 (50) at 5,000 r/min 750 ~ 850 2-stroke, L 698 (42.60) 67.0 66.0 (2.64 2.60) C.D.I system B8HS-10 0.9 ~ 1.0 (0.035 ~ 0.039) Remote control Electric start 12-70 ~ 100...

  • Page 58: 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 59: Storing Outboard Motor

    “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 60 4) Run the engine at a fast idle for 10~15 minutes. 5) 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 61 2) Install a flushing attachment to the lower unit. (Flushing attachment available from your Yamaha dealer). Avoid running the outboard at high 605014 speed while on the flushing attachment, or overheating could occur. 8 Do not touch or remove electrical parts when starting or during operation.
  • Page 62 EMK26011 Lubrication 1) Remove the spark plugs, and spray a 10 second spray of Yamaha “Stor- Rite Engine Fogging Oil” into each cylinder. Grease spark plug threads and reinstall the spark plugs and torque to proper specification. (Refer “CLEANING ADJUSTING SPARK PLUG”).
  • Page 63 EMK29010 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 64: 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 65: Maintenance Chart

    Frequency of maintenance operations may be adjusted according to the operating con- ditions, but the following table gives general guidelines. The mark ( ) 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 66: Greasing

    EMU00366 GREASING Yamaha marine grease (Water resistant grease) 4-11...

  • Page 67: 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 68 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. NOTE: If a torque-wrench is not available when you are fitting a spark plug, a good esti- mate of the correct torque is 1/4 to 1/2 a...

  • Page 69: Checking Fuel System

    EMK38010 CHECKING FUEL SYSTEM Gasoline (petrol) and its vapors are highly flammable and explosive. Keep away from sparks, cigarettes, flames or other sources of ignition. Check the fuel line for leaks, cracks, or malfunctions. If any problem is found, it should be repaired immediately by Yama- ha dealer or other qualified mechanic.

  • Page 70: Cleaning 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 71: Adjusting Idling Speed

    If not warmed up fully, the speed setting will tend to be too high. If you have diffi- culty obtaining the specified idle, consult a Yamaha dealer or other qualified mechanic. 204014 1 Throttle stop-screw...

  • Page 72: 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) 205015 EMK78010 CHECKING WIRING AND...

  • Page 73: Checking Power Trim And Tilt System

    5) Operate the motor to trim and tilt down. Check that the trim and tilt rod operates smoothly. 1 Trim and tilt rod NOTE: If any operation is abnormal, consult a Yamaha dealer. Recommended fluid; Yamaha power trim & tilt fluid or ATF (DEXRON-II) 4-18...

  • Page 74: Checking Propeller

    EML08011 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”...
  • Page 75 Installation 1) Apply Yamaha Marine grease A (water-resistant grease) to the pro- peller-shaft. 2) Slide the propeller over the propeller- shaft. Be sure to install the thrust washer before installing propeller, otherwise, lower case and propeller boss may be damaged.

  • Page 76: Changing Gear Oil

    Inspect the used oil after it has been drained. If the oil is milky, water is get- ting into the gearcase 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 77: Cleaning Fuel Tank

    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 Keep away from sparks, cigarettes, flames or other sources of ignition when cleaning the fuel tank.

  • Page 78: Inspecting And Replacing Anode

    EML24010 INSPECTING AND REPLACING ANODE Yamaha outboard motor is protected from corrosion by a sacrificial anode(s). Check the anode periodically. Remove the scales from surfaces of the anode. For the replacement of the anode, consult 405011 a Yamaha dealer.

  • Page 79: Checking Battery

    EML26010 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 80 1) Check the electrolyte level at least once a month. Fill to the manufactur- er’s recommended level when neces- sary. Top up only with distilled water (or pure de-ionized water suitable to use in batteries). Ordinary tap-water contains minerals 901015 harmhul to a battery, and should not be used for topping-up.

  • Page 81: Checking Bolts And Nuts

    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 82: Motor Exterior

    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. Consult a Yamaha dealer for touch-up paint. EML44010 COATING THE BOAT BOTTOM A clean hull improves boat performance.

  • Page 83: 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 Treatment of submerged motor..5-10...

  • Page 84: 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 85 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 86 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 87 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 88: 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. EMG65210 POWER TRIM / TILT WILL NOT OPER-...

  • Page 89: Starter Will Not Operate

    EMN30410 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 emergency starter rope. 8 Use this procedure only in an emer- gency and only to return to port for repairs.
  • Page 90 Procedure 1) Remove the top cowling. 2) Remove the flywheel cover by remov- ing the bolts. 208051 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 91: Engine Fails To Operate

    EMU00434 ENGINE FAILS TO OPERATE EMU00955* Cold Engine Fails to Start If a cold engine fails to start for prime start model, use the following procedure. When starting or operating the engine, do not touch the ignition coil, high volt- age wire, spark plug cap or other electri- cal parts carrying high voltage.
  • Page 92 4) Open the throttle slightly without shifting using the throttle control grip, neutral throttle lever or free accelera- tor. (It is necessary to change the throttle opening slightly depending on the engine temperature.) After the engine starts, return the throttle to the original position. 701014 5) Set the MAIN SWITCH to “ON”.

  • Page 93: 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 94 – MEMO –...

  • Page 95: Index

    EMP00010 Chapter 6 INDEX INDEX............6-1...
  • Page 96 EMP10010 INDEX Filling fuel ..........3-4 Filling fuel and engine oil......3-4 Filling fuel tank .........4-4 Adjusting idling speed ......4-16 Flushing cooling system and fogging Adjusting trim angle......3-17 engine............4-4 Air vent screw...........2-2 Forward...........3-14 Basic boating rules ........1-6 Fuel hose joint ..........2-2 Fuel meter..........2-2 Battery care..........4-8 Fuel tank............2-2 Battery requirement ......1-12...

  • Page 97: Propeller Selection

    Outboard motor serial number ....1-1 Warranty information ....Next page Overheat warning ........2-9 Water leakage.........4-17 Periodic maintenance ......4-9 Power trim/tilt switch.......2-6 Power tim/tilt will not operate ....5-5 Pre-operation checks .......3-7 Propeller selection .........1-12 Remote control.........2-3 Remote control lever .......2-3 Replacement parts........4-9 Replacing fuse........4-17 Reverse ...........3-14 Ring free fuel additive ......3-4...
  • Page 98 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 99 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 100 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 101 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 102 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 103 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 106 Printed in Japan April 2001—0.5 63D-28199-15 (40VET/50HET) Printed on recycled paper...

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