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Yamaha 40A Owner's Manual

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40A
50A
OWNER'S MANUAL
U.S.A.Edition
LIT-18626-04-55

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Summary of Contents for Yamaha 40A

  • Page 1 OWNER’S MANUAL U.S.A.Edition LIT-18626-04-55...
  • 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

    EMA20010 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).........1-11 Engine oil ..........1-11 BATTERY REQUIREMENT ....1-12 PROPELLER SELECTION .......1-13 START-IN-GEAR PROTECTION ....1-14...

  • Page 8: Identification Numbers Record

    Record your outboard motor serial num- 401012 ber in the spaces provided to assist you in 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- 000909 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. 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 12: Important Labels

    EMB30011 IMPORTANT LABELS WARNING LABELS WARNING Be sure shift control is in neutral before starting engine. (except 2HP)ê Do not touch or remove electrical partsê when starting or during operation. 202015* Keep hands,hair,and clothes away from flywheelê and other rotating parts while engine is running. 6A1-83625-41 WARNING This engine is equipped with a neutral starting device.

  • 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 will clear one another if you continue on your set course and speed. VESSELS 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 the right-of-way. The exceptions to this wise, if another vessel is passing you, you are: should maintain your speed and direction 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: Gasoline (Petrol)

    EMU00018 GASOLINE (PETROL) Recommended gasoline: Regular unleaded gasoline with a mini- mum 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. If unleaded gasoline is not avail- able, then leaded regular gasoline can be used.

  • 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: Propeller Selection

    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

    3 Type of propeller (propeller mark) Refer to the section “CHECKING PRO- PELLER” for instructions on propeller 602011 removal and installation. 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.
  • Page 22 -MEMO-...

  • Page 23: Basic Components

    EMC00010 Chapter 2 BASIC COMPONENTS MAIN COMPONENTS......2-1 OPERATIONS OF CONTROLS AND OTHER FUNCTIONS ........2-3 Fuel tank ..........2-3 Multifunction tiller handle ....2-4 Remote control ........2-7 Choke knob .........2-11 Recoil starter handle ......2-11 Steering friction adjusting screw..2-12 Trim angle adjusting rod ....2-12 Shallow water lever ......2-13 Power trim/tilt switch ......2-13 Warning indicator.......2-14...

  • Page 24: Main Components

    EMU01206 MAIN COMPONENTS 101133* 1 Recoil starter handle 9 Cooling water inlet 2 Multifunction tiller handle 0 Propeller 3 Choke knob q Trim tab (Anode) 4 Warning indicator lamp (Oil/Overheat) w Anti-cavitation plate 5 Tilt lock lever e Anode 6 Transom clamp handle r Tilt support lever 7 Clamp bracket t Shallow water lever...
  • Page 25 EMU01206 MAIN COMPONENTS 1 Oil filler access cap 9 Anti-cavitation plate 2 Warning indicator lamp 0 Anode 3 Clamp bracket q Trim angle adjusting rod 4 Battery lead w Tilt support lever 5 Anode e Top cowling 6 Cooling water inlet * r Remote control box 7 Propeller * t Digital tachometer...

  • Page 26: Operations Of Controls And Other Functions

    EMC20010 OPERATIONS OF CONTROLS OTHER FUNCTIONS EMC21012 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) EMC31010 Fuel hose joint This connector is provided for connecting...

  • Page 27: Multifunction Tiller Handle

    EMU00075 MULTIFUNCTION TILLER HANDLE The tiller handle centralized most of func- tions for the outboard motor operation. 1 Tiller handle 2 Gear shift lever 3 Throttle control grip 4 Throttle indicator 5 Throttle friction adjusting knob 501015 6 Engine stop lanyard switch / Engine stop button(If equipped) EMU00079 Tiller handle...
  • Page 28 EMC40210 Throttle indicator The fuel consumption curve on the throt- tle indicator shows the relative amount of fuel consumed for each throttle position. Choose the setting that offers the best performance and fuel economy for the desired operation. 501023 1 Throttle indicator EMC64210 Throttle friction adjusting knob A friction device in the tiller handle provid...
  • Page 29 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 30: Remote Control

    EMU00096* REMOTE CONTROL Both the shifter and the throttle are actu- ated by the remote control lever. Addi- tionally, the remote 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 (if equipped)
  • Page 31 EMC50110 Neutral interlock trigger To shift out of Neutral, the neutral inter- lock trigger of the remote control lever must first be pulled up. EMC50210 Neutral throttle lever To open the throttle without shifting into 701036 either Forward or Reverse, place the remote control lever in the Neutral posi- tion and lift the neutral throttle lever.
  • Page 32 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 33 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 34: Choke Knob

    EMC87011 Throttle friction adjusting screw A friction device in the remote control box provides resistance to movement of the remote control lever. This is adjustable for operator preference. An adjusting screw is located at the front of the remote control box. Resistance Screw 701035...

  • Page 35: Steering Friction Adjusting Screw

    EMD00011* STEERING FRICTION ADJUSTING SCREW 40MH A friction device provides resistance to steering movement. This is adjustable for operator preference. adjusting screw/bolt is located on the swivel brack- 408015 EMD00310 Adjustment Resistance Screw/bolt Increased Turn clockwise Decreased Turn counterclockwise Do not overtighten the friction screw/ bolt.

  • Page 36: Shallow Water Lever

    EMD08110 SHALLOW WATER LEVER (If equipped) Pushing this lever down will tilt the motor up partially to provide more clearance when operating in shallow water. 412012 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.

  • Page 37: Warning Indicator

    EMU00120 WARNING INDICATOR If the engine develops a condition which is cause for warning, the indicator on the front of the bottom cowling lights up. The three indicators mounted on the bot- tom cowling also indicate level of the engine oil. Refer to the section “WARN- ING SYSTEM”...

  • Page 38: 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 39 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 40 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 41: 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 42: Tilt Lock Mechanism

    EMD44010 TILT LOCK MECHANISM (for Manual tilt model) The tilt-lock mechanism is used to pre- vent reverse thrust from the propeller lift- ing the outboard motor when reversing. To lock it, set the tilt-lock lever in the up position. To release it, push the tilt-lock lever down.

  • Page 43: Tilt Support Lever

    EMD60010 TILT SUPPORT LEVER Power trim & tilt/Hydro tilt model To keep the outboard motor in the tilted- up position, lock the tilt support lever to the clamp bracket. 403011 EMD60210 TILT SUPPORT LEVER 40MH To keep the outboard motor in the tilted- up position, lock the tilt support lever to the swivel bracket.

  • Page 44: 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- 303012 not be located and corrected. EMD82012* OVERHEAT WARNING This engine has an overheat warning device.

  • Page 45: 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. 303012 ); Included ( ); N/A — Warning device Tiller Remote activation control...
  • Page 46 -MEMO-...

  • Page 47: Operation

    EMF00010 Chapter 3 OPERATION INSTALLATION ........3-1 Mounting the outboard motor....3-2 Clamping the outboard motor ....3-4 FILLING FUEL AND ENGINE OIL ....3-5 Filling fuel..........3-5 Filling oil ..........3-6 PRE-OPERATION CHECKS ......3-9 Operation after a long period of storage..........3-10 BREAKING IN (RUNNING IN) ENGINE ...........3-11 STARTING ENGINE .......3-13 WARMING UP ENGINE ......3-18...

  • Page 48: 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 49: Mounting The Outboard Motor

    EMF12012 MOUNTING THE OUTBOARD MOTOR Improper mounting of the outboard motor could result in hazardous conditions such as poor handling, loss of control, or fire hazards. Observe the following: 8 The information presented in this sec- tion is intended as reference only. It is possible provide complete...
  • Page 50 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 capac- ity plate, consult the boat manufacturer. EMU01299 Mounting Height To run your boat at optimum efficiency,...

  • Page 51: Clamping The Outboard Motor

    EMU01318 CLAMPING THE OUTBOARD MOTOR 40MH 1) Place the outboard on the transom so that it is positioned as close to the center as possible. Tighten the tran- som clamp screws evenly and secure- ly. Check the clamp-screws for tight- ness occasionally during operation of 409011 the motor as they can work loose due...

  • Page 52: 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 53: Filling Oil

    EMF32011 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 54 EMF34010 Procedure Manual start model 1) Remove the top cowling. 2) Open the oil tank filler cap by pulling the tab. 3) Slowly fill the engine oil into the engine oil tank. 4) After filling, replace the cap securely. 203013* 5) Replace the top cowling securely.

  • Page 55: Oil Level Indicator

    EMD33010 Oil level indicator Manual start model The various oil-level system functions are as follows: Oil level warning lamp Engine oil tank Remarks more than 200 cm (0.21 US qt, No refilling necessary. 0.181 Imp qt) 200 cm or less (0.21 US qt, Buzzer sounds in remote con- 0.181 Imp qt) trol box and engine speed is...

  • Page 56: Pre-Operation Checks

    EMF40012 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. EMF41110 Fuel 8 Check to be sure you have plenty of fuel for your trip.

  • Page 57: Operation After A Long Period Of Storage

    3) Watch for oil flowing through the oil feed pipes. After any air in the oil 212011* 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 58: Breaking In (Running In) Engine

    EMF50112 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 59 5 minutes at a time. Let the engine cool between full-throttle runs. Vary engine speed occasionally. 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. 3-12...

  • Page 60: 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 902053 water near you. 8 When the air vent screw is loosened, gasoline (petrol) vapor will be released.
  • Page 61 EMU00854 PROCEDURE FOR TILLER CONTROL MODEL 4) Place the gear-shift lever in the neu- tral position. NOTE: The start-in-gear protection device pre- vents the engine from starting except when in Neutral. 501024 5) Place the throttle control grip in the “START”...
  • Page 62 EMF63110 Manual start model 7) Pull out the choke knob completely. NOTE: It is not necessary to use the choke when restarting a warm engine. 305043* 8) To start the engine, pull the starter handle slowly until you feel resis- tance.
  • Page 63 EMF65010 PROCEDURE FOR REMOTE CONTROL MODEL 4) Place the remote control lever in the Neutral position. NOTE: 8 The start-in-gear protection device pre- vents the engine from starting except when in Neutral. 701015 8 It is not necessary to open the free accelerator lever or Neutral throttle lever while starting.
  • Page 64 EMF63910 Electric start model 7) Turn the main switch to “START”, and START hold it for a maximum of 5 seconds. 8) Immediately the engine starts, release the main switch to return it to “ON”. 8 Do not turn the main switch to “START”...

  • Page 65: 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 66: Shifting

    EMG20111 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). EMG22310 FORWARD Tiller control model...

  • Page 67: Reverse

    EMU01326 REVERSE When operating in Reverse, go slowly. Do not open the throttle more than half. Oth- erwise, the boat may become unstable, which could result in loss of control and an accident. 402051 1) Place the throttle control grip in the fully closed position (for Tiller control model).

  • Page 68: 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. EMG35210 PROCEDURE Button switch equipped model 1) Push and hold the engine stop switch (If button switch equipped on the switch) until the engine comes to a complete stop.
  • Page 69 EMG35310 PROCEDURE START Main switch equipped model 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 701023 “OFF”). 2) If the fuel joints are provided, discon- nect the fuel line from the motor after stopping the engine.

  • Page 70: 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 71: Adjusting Trim Angle

    ADJUSTING TRIM ANGLE EMU00951 Manual tilt model There are 4 or 5 holes provided in the clamp bracket to adjust the outboard motor trim angle. 1) Stop the engine. 2) Remove the trim angle adjusting rod 1 from the clamp bracket while tilting 404015 the motor up slightly.
  • Page 72 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 73 EMG62010 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 74: Tilting Up/Down

    EMH10110 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 75 EMG63010 PROCEDURE FOR TILTING UP Manual tilt model 1) Remove the fuel-line connection from the motor. (If the fuel connector is provided on the motor.) 304036 2) Place the tilt-lock lever in Release. 402035 3) Hold the rear of the top cowling with one hand, tilt the engine up, and turn the tilt-support lever to the locked position and support the engine.
  • Page 76 EMG63110 PROCEDURE FOR TILTING UP Hydro-tilt model 1) Remove the fuel-line connection from the motor. 304036 2) Place the tilt-lock lever in the release position. 402011* 3) Hold the rear of the top cowling with one hand, tilt the engine up, and turn the tilt-support lever toward you and support the engine.
  • Page 77 EMG63210 PROCEDURE FOR TILTING UP Power trim and tilt model 1) Remove the fuel-line connection from the motor. 304036 2) Push the power trim and tilt switch “UP” until the outboard has tilted up completely. 701034 302013* 3) Turn the tilt-support lever toward engine bracket support...
  • Page 78 EMG73210* PROCEDURE FOR TILTING DOWN Manual tilt model 1) Return the tilt support lever tilting up the engine slightly. 2) Tilt down the engine. EMG64011 PROCEDURE FOR TILTING DOWN Hydro-tilt model 1) Release the tilt support lever holding the rear of the top cowling with one hand.

  • Page 79: Cruising In Shallow Water

    EMG70011* CRUISING IN SHALLOW WATER Manual tilt model The outboard motor can be tilted up par- tially to allow operation in shallow water. 000832 8 Place the gear shift in the Neutral posi- tion before using the shallow water cruising system. 8 Run the boat at the lowest possible speed when using the shallow water cruising system.
  • Page 80 EMG71410 PROCEDURE 1) Place the gear shift lever in the neu- tral position. 501024 2) Push the shallow water lever down to the release position. 412012 3) For setting the outboard motor at the partially tilted position, slightly tilt up the engine until the plate turns com- pletely 4) To return the engine to the normal...
  • Page 81 EMG70311 CRUISING IN SHALLOW WATER Hydro tilt model The engine can be tilted up partially to allow operation in shallow water. 000832 8 Place the gear shift in the Neutral posi- tion before setting for the shallow water cruising. 8 Return the engine to its normal posi- tion as soon as the boat is back in deeper water.

  • Page 82: 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 83: 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...4-13 Checking fuel system......4-15 Cleaning fuel filter ......4-16 Adjusting idling speed.......4-17 Checking water drain under engine oil tank ........4-18...

  • Page 84: Specification Data

    TC-W3 certified outboard oil Oil tank capacity L (US qt, Imp qt) Engine: 1.5 (1.6, 1.3) Remote: — 8Lubrication YAMAHA PRECISION BLEND SYSTEM 8Fuel/oil ratio — 8Recommended gearcase oil Hypoid gear oil (SAE 90) (US oz, Imp oz) 430 (14.5, 15.1)
  • Page 85 TC-W3 certified outboard oil Engine: 1.5 (1.6, 1.3) Engine: 1.5 (1.6, 1.3) Engine: 1.5 (1.6, 1.3) Remote: — Remote: — Remote: — YAMAHA PRECISION BLEND SYSTEM YAMAHA PRECISION BLEND SYSTEM YAMAHA PRECISION BLEND SYSTEM — — — Hypoid gear oil (SAE 90) Hypoid gear oil (SAE 90) —...

  • Page 86: 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 87 “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...
  • Page 88 EMK22511 Flushing Cooling System and Fogging Engine Cooling system flushing is essential to prevent the cooling system from clogging up with salt, sand, or dirt. In addition, fog- ging of the engine is mandatory to pre- vent expensive engine damage due to rust.
  • Page 89 2) Install a flushing attachment to the lower unit. (Flushing attachment available from your Yamaha dealer). Avoid running the outboard at high speed while on the flushing attachment, or overheating could occur. 605014 8 Do not touch or remove electrical parts when starting or during operation.
  • Page 90 EMK26112 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 to “CLEANING AND ADJUST- ING SPARK PLUG”.)
  • Page 91 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 92: 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 93: 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 Interval...

  • Page 94: Greasing

    EMU00366 GREASING Yamaha marine grease (Water resistant grease) 4-11...
  • Page 95 EMU00366 GREASING Yamaha marine grease (Water resistant grease) 4-12...

  • Page 96: 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 97 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 98: 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 99: 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 100: Adjusting Idling Speed

    5) Attach the filter assembly to the bracket with that the fuel hoses are attached to the filter assembly. 6) Run the engine and check the filter and lines for leaks. 1 Filter element 2 O-ring 3 Filter cap 4 Filter housing 207013 EMK54110 ADJUSTING IDLING SPEED...

  • Page 101: Checking Water Drain Under Engine Oil Tank

    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. 1 Throttle stop-screw 204014*...

  • Page 102: 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 103: Checking Power Trim And Tilt System

    5) Operate the motor to trim and tilt down. Check that the trim and tilt rod operates smoothly. NOTE: If any operation is abnormal, consult a Yamaha dealer. Recommended fluid; Yamaha power trim & tilt fluid or ATF (DEXRON- 4-20...

  • Page 104: 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 105 2 Propeller 3 Spacer 4 Washer 5 Propeller nut 6 Cotter pin Installation 1) Apply Yamaha Marine grease (water- resistant grease) to the propeller- 602041 shaft. 2) Slide the propeller over the propeller- shaft. Be sure to install the thrust washer...

  • Page 106: 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 107: 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 108: Inspecting And Replacing Anode

    902054 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 604012 a Yamaha dealer.

  • Page 109: 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 110 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 harmhul to a battery, and should not be used for topping-up.
  • Page 111 EMU01279 Connecting the Battery Mount the battery holder securely in a dry, well-ventilated, vibration-free loca- tion in the boat. Install a fully charged battery in the holder. 8 Make sure the main switch (on applica- ble models) is “OFF” before working on the battery.

  • Page 112: Checking Bolts And Nuts

    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 113: 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 114: 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 115 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 116 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 117 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 118: Temporary Action In Emergency

    . 607011 3) However damage is found or not found, go back to a nearest harbor slowly and carefully. 4) Have a Yamaha dealer inspection of the outboard motor, before operating it again. EMG65110 POWER TRIM / TILT WILL NOT...

  • Page 119: Starter Will Not Operate

    EMN30310 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 120 Procedure 1) Remove the top cowling. 2) Remove the starter/flywheel cover by removing the bolts. NOTE: On a model equipped with the start-in- gear protection device (cable), disconnect the cable from the starter. 208025 208026 3) Prepare the engine for starting. See “STARTING ENGINE”...

  • Page 121: Engine Fails To Operate

    EMN32411 ENGINE FAILS TO OPERATE Cold engine fails to start (for Prime start model) If a cold engine fails to start, use the fol- lowing procedure. 1) Adjust the trim angle so that the drive shaft is at right angles to the water surface or is trimmed in.
  • Page 122 5) Set the MAIN SWITCH to “ON”. 6) Set the MAIN SWITCH to “START”. NOTE: START When the starter mechanism malfunctions, refer to “STARTER WILL NOT OPERATE”. 8 Do not turn the main switch to 701022 “START”when the engine is running. 8 Do not keep the starter-motor turning for more than 5 seconds with the main switch in the “START”...

  • Page 123: Treatment Of Submerged Motor

    107013 starter or 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 124 -MEMO-...

  • Page 125: Index

    EMP00010 Chapter 6 INDEX INDEX............6-1...
  • Page 126 EMP10010 INDEX Emission control information....1-2 Engine fails to operate......5-8 Engine oil ..........1-11 Engine stop button ........2-5 Adjusting idling speed ......4-17 Engine stop lanyard switch ...2-6, 2-10 Adjusting trim angle......3-24 Air vent screw...........2-3 Exhaust leakage ........4-19 Filling fuel ..........3-5 Basic boating rules ........1-6 Filling fuel tank .........4-4 Battery care..........4-8 Filling fuel and engine oil......3-5...

  • Page 127: Propeller Selection

    Motor exterior ........4-29 Stopping engine........3-21 Mounting height ........3-3 Storing outboard motor ......4-4 Mounting the outboard motor ....3-2 Tachometer ..........2-15 Multifunction tiller handle.......2-4 Temporary action in emergency....5-5 Neutral interlock trigger ......2-8 Throttle control grip.........2-4 Neutral throttle lever .......2-8 Throttle friction adjusting knob....2-5 Throttle friction adjusting screw ..2-11 Oil level indicator......2-17, 3-8 Throttle indicator ........2-5...
  • Page 128 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 129 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 130 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 131 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 132 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 133 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 136 Printed in Japan March 2001—0.5 1 ! 63B-28199-19 (40VMHO,40VETO, 50HETO, 50EJDO) Printed on recycled paper...
  • Page 137 cled paper...

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