Yamaha SX225A Owner's Manual
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Yamaha SX225A Owner's Manual

Yamaha SX225A Owner's Manual

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SX225A
LX225A
SX250A
LX250A
OWNER'S MANUAL
U.S.A.Edition
LIT-18626-04-64

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  • Page 1 SX225A LX225A SX250A LX250A OWNER’S MANUAL U.S.A.Edition LIT-18626-04-64...
  • Page 3 EMU01449 TO THE OWNER Thank you for choosing a Yamaha out- board motor. This Owner’s manual con- A CAUTION indicates special precautions tains information needed for proper oper- that must be taken to avoid damage to ation, maintenance and care. A thorough the outboard motor.

  • Page 4: Table Of Contents

    EMA20010 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

    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 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 EMU01388* CALIFORNIA AND OTHER STATES This engine conforms U.S. Environmental Protection Agency (EPA) and/or California Air Resources Board (CARB) 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

    EMB40010 Stand-on Vessel BASIC BOATING RULES The vessel with the right-of-way has the duty to continue its course and speed, (Rules of the road) except to avoid an immediate collision. When you maintain your direction and Just as there are rules which apply when speed, the other vessel will be able to you are driving on streets and high ways, determine how best to avoid you.
  • Page 12 RULES WHEN ENCOUNTERING 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

    EMB50510 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: Engine Oil

    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. 8 Use only new clean gasoline which has...

  • Page 17: Operation

    EMB70210 BATTERY REQUIREMENT (for Electric start model) Choose battery which meets the following specifications. Minimum cold crank performance 512 Amps at -17.8°C (0°F) Minimum reserve capacity 182 Minutes at 26.7°C (80°F) If any electrical accessories are used, use a second battery to power them. Choose a battery with the same capacity as the one for the engine.
  • 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

    EMC00010 Chapter 2 BASIC COMPONENTS MAIN COMPONENTS......2-1 OPERATIONS OF CONTROLS AND OTHER FUNCTIONS ........2-2 Remote control ........2-2 Trim tab ..........2-7 Power trim / tilt switch ......2-8 Tilt support lever ........2-8 Digital tachometer........2-9 Digital speedometer......2-12 Fuel management meter ....2-15 Top cowling release lever ....2-19 Flushing device........2-20 WARNING SYSTEM ......2-21 Overheat warning.......2-21...

  • Page 22: Main Components

    EMU01206 MAIN COMPONENTS YAMAHA YAMAHA FUEL MANAGEMENT SPEED Km/h knot Km/L mile TRIP TIME BATT ECON SYNC mode mode 000905 1 Power trim and tilt switch e Cooling water pilot hole 2 Flushing device * r Remote control box (Side mount type)

  • Page 23: Operations Of Controls And Other Functions

    EMC20010 OPERATIONS OF CONTROLS AND OTHER FUNCTIONS EMU01273 REMOTE CONTROL Both the shifter and the throttle are actu- ated by the remote control lever. In addi- 701011* tion, the electrical switches are mounted on the remote control box. å Side mount remote control box ∫...
  • Page 24 EMC50010 Remote control lever Moving the lever forward from the Neutral position engages Forward gear. Pulling the lever back from Neutral engages Reverse. The engine will contin- ue to run at idle until the lever is moved about 35° (a detent can be felt). Moving the lever farther opens the throttle, and 701031 the engine will begin to accelerate.
  • Page 25 EMC48110 Main switch The main switch controls the ignition sys- tem; its operation is described below. 8 OFF Electrical circuits switched off. (The key can be removed.) 8 ON Electrical circuits switched on. (The key cannot be removed.) 8 START Starter-motor will turn and start engine.
  • Page 26 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 27 EMC81110 Free accelerator 35° To open the throttle without shifting into either Forward or Reverse, push the free accelerator button and turn the remote control lever. NOTE: 8 The free accelerator button can be oper- ated only when the remote control lever 702043 is in the Neutral position.

  • Page 28: 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 29: 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 30: 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 31 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 32 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 33: Digital Speedometer

    EMD40012 DIGITAL SPEEDOMETER This meter contains the speedometer, fuel YAMAHA meter with warning, trip meter, clock and SPEED Km/h voltmeter with warning. knot 1 Speedometer mile 2 Fuel meter TRIP TIME BATT 3 Trip meter/clock/voltmeter 4 Warning indicator mode NOTE:...
  • Page 34 EMU01274 Trip Meter This meter displays the distance the boat YAMAHA has traveled since the meter was last SPEED Km/h reset. knot Repeatedly push and release the “mode” mile button until the indicator on the face of TRIP TIME BATT the meter points to “TRIP”.
  • Page 35 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 TRIP TIME BATT wrong setting of the selector switch on 802032 the meter will give incorrect readings.

  • Page 36: Fuel Management Meter

    EMD42012 FUEL MANAGEMENT METER Optional equipment YAMAHA FUEL MANAGEMENT The meter contains the fuel flow meter, fuel consumption meter, fuel economy Km/L meter, twin engine speed synchronizer, water separator warning indicator. ECON SYNC mode 1 Fuel flow meter 2 Fuel consumption/Fuel economy...
  • Page 37 EMD32010 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 38 (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 39 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 40: Top Cowling Release Lever

    EMD64011 TOP COWLING RELEASE LEVER The top cowling can be removed by oper- ating the cowling release lever. Pulling the front lever unlocks the top cowling for removal. When refitting the top cowling: 1) Set the top cowling straight down onto the engine, being careful to 301023 avoid catching spark plug leads or...

  • Page 41: Flushing Device

    EMU01146 FLUSHING DEVICE This device 1 is used to clean the cooling water passages of the motor using a gar- den hose and tap water. NOTE: Refer to “Cleaning Cooling-water Passages” in Chapter 4 for instructions on usage. 000825 2-20...

  • Page 42: 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. 001053 EMD82312* OVERHEAT WARNING This engine has an overheat warning device.

  • Page 43: 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. ( 1 ); Included (—); N/A 001054 Warning device Tiller Remote activation control...
  • Page 44 -MEMO-...

  • Page 45: Operation

    EMF00010 Chapter 3 OPERATION INSTALLATION ........3-1 Mounting the outboard motor....3-2 FILLING FUEL AND ENGINE OIL ....3-4 Filling fuel..........3-4 Filling oil ..........3-5 PRE-OPERATION 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 46: Installation

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

  • Page 47: Mounting The Outboard Motor

    EMU00176 MOUNTING THE OUTBOARD MOTOR Improper mounting of the outboard motor could result in hazardous condi- tions such as poor handling, loss of con- trol, or fire hazards. Observe the follow- ing: 8 The information presented in this sec- tion is intended as reference only. It is not possible to provide complete instructions every...
  • Page 48 Overpowering a boat may cause severe instability. Do not install an outboard motor with more horsepower than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate, consult the boat manufac- turer.

  • Page 49: Filling Fuel And Engine Oil

    While many additives available may reduce deposits, Yamaha recommends the use of Ring Free Fuel Additive, 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 50: Filling Oil

    EMF32011 FILLING OIL (for Precision blend sys- tem 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).
  • Page 51 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 52 EMU00200* Oil Level Indicator The various oil level system functions are as follows: Oil level indi- Oil level indi- Engine oil Remote oil cator (Analog cator (Digital Remarks tank tank tachometer) tachometer) Green More than More than • No refilling necessary. 1,500 cm 300 cm (0.32 US qt,...

  • Page 53: Pre-Operation Checks

    EMF40310 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 54: 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 55: Breaking In (Running In) Engine

    EMF50410 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 damage.
  • Page 56 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. 3-11...

  • Page 57: 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 58 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 702025 5) Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg.
  • Page 59 6) Turn the main switch to “ON”. NOTE: In case of dual-engine operation, when the main switch is turned on, the buzzer operates for a few seconds and stops automatically. Should either of the dual engines stall, the buzzer operates. EMU00949 Electric Start Model 7) Turn the main switch to “START”,...

  • Page 60: 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 61: Shifting

    EMG20310 SHIFTING Before shifting, make sure there are no swimmers or obstacles in the water near you. 701043 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).

  • Page 62: 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. EMG41511 1) Turn the main switch to “OFF”. NOTE: START The engine can also be stopped by pulling the lanyard from the engine stop switch (then turning the main switch to “OFF”).

  • Page 63: 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 64: 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 702014 unit and clamp bracket. 8 Use caution when trying a trim position for the first time.
  • Page 65 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 66: 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 67 EMU01201 PROCEDURE FOR TILTING UP Power trim/tilt model 1) If there is a fuel joint or a fuel cock on the boat, disconnect the fuel line or close the fuel cock. 2) Push the power trim/tilt switch “UP” DOWN until the outboard has tilted up com- 302012 pletely.

  • Page 68: 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 411021 desired position.

  • Page 69: 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......4-8 Replacement parts .......4-8 Maintenance chart........4-9 Cleaning and adjusting spark plug...4-10 Checking fuel system......4-12 Cleaning fuel filter ......4-13 Adjusting idling speed.......4-14 Checking water trap under engine oil tank ..........4-15 Replacing fuse ........4-16...

  • Page 70: Specification Data

    1.2 (1.3, 1.1) (remote oil tank) L (US qt, Imp qt) 10.5 (11.1, 9.2) / 18.0 (19.1, 15.9) Fuel/oil ratio YAMAHA PRECISION BLEND SYSTEM 9 Recommended gearcase oil Hypoid gear oil (SAE90) Gear oil quantity (US oz, Imp oz) 1,150 (38.9, 40.5)
  • Page 71 1.2 (1.3, 1.1) 10.5 (11.1, 9.2) / 18.0 (19.1, 15.9) 10.5 (11.1, 9.2) / 18.0 (19.1, 15.9) 10.5 (11.1, 9.2) / 18.0 (19.1, 15.9) YAMAHA PRECISION BLEND SYSTEM YAMAHA PRECISION BLEND SYSTEM YAMAHA PRECISION BLEND SYSTEM Hypoid gear oil (SAE90)

  • Page 72: 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 000891 prevent fuel from leaking. TRAILERING OUTBOARD MOTOR The motor should be trailered and stored in the normal running position.
  • Page 73 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. EMK21010 Filling Fuel Tank Fill the fuel tank with fresh fuel and add one ounce of “Yamaha Fuel Conditioner...
  • Page 74 1) Remove the top cowling and silencer cover. Remove the propeller. 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, 605014 or overheating could occur.
  • Page 75 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 76 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 77: 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 78: 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 79: 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 80 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 81: 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 82: 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 83: 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 tight- 6) Run the engine and check the filter and lines for leaks.

  • Page 84: Checking Water Trap Under Engine Oil Tank

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

  • Page 85: 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 (80A × 2, 20A) EMK78010 CHECKING WIRING AND CONNECTORS 1) Check that each grounding wire is properly secured.

  • Page 86: Greasing

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

  • Page 87: 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; 411021 Yamaha power trim & tilt fluid or ATF (DEXRON- 4-18...

  • Page 88: Checking Propeller

    EML08211 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 89 “L” after the size indication on the pro- peller. Otherwise, the boat may move in the opposite direction from that expected. 1) Apply Yamaha Marine grease A (water-resistant grease) to the pro- peller-shaft. 2) Slide the propeller over the propeller- shaft.

  • Page 90: 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 91: Inspecting And Replacing Anode

    7) Insert and tighten in the oil drain plug. EMM60001 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 603024 a Yamaha dealer.

  • Page 92: 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 93 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 94 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 95: 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 96: Motor Exterior

    EMU00409 MOTOR EXTERIOR EMU00410 Cleaning the Outboard Motor After use, wash the exterior of the out- board with fresh water. Flush the cooling system with fresh water. NOTE: Refer to Flushing Cooling System instruc- tions in “TRANSPORTING AND STORING OUTBOARD MOTOR”. EMU01172 CLEANING COOLING-WATER PASSAGES...

  • Page 97: 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. EML44010 COATING THE BOAT BOTTOM A clean hull improves boat performance.
  • Page 98 -MEMO-...

  • Page 99: Trouble Recovery

    EMN00010 Chapter 5 TROUBLE RECOVERY TROUBLESHOOTING ......5-1 TEMPORARY ACTION IN EMERGENCY ..........5-5 Impact damage........5-5 Running single engine......5-5 Power trim/tilt will not operate ...5-6 Starter will not operate ......5-7 Engine fails to operate ......5-9 Low oil level warning activates ..5-11 Top cowling does not unlock....5-12 Treatment of submerged motor..5-13...

  • Page 100: 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 101 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 102 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 103 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 104: 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. EMU00418 RUNNING SINGLE ENGINE Using only one of the engines in case of...

  • Page 105: Power Trim/Tilt Will Not Operate

    EMU00419 POWER TILT WILL NOT OPERATE If the engine cannot be tilted up or down with the power tilt because of a dis- charged battery or a failure with the power tilt unit, the engine can be tilted manually. 1 Manual valve screw 411032 EMU00421 1) Loosen the manual valve screw coun-...

  • Page 106: Starter Will Not Operate

    EMN30710 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 107 Procedure 1) Remove the top cowling. 301023 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. 208042* 4) Turn the main switch to START and back to OFF several times to inject...

  • Page 108: 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 109 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. 000891 2) Disconnect the Yellow/White emer- gency connector. The ignition timing advance circuit of the microcomputer is bypassed.

  • Page 110: 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 218014* remote oil tank 3 to the engine oil tank 2...

  • Page 111: Top Cowling Does Not Unlock

    NOTE: 8 Reserve oil capacity is maximum 1,500 (1.6 US qt, 1.31 Imp qt). 8 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. EMD64111 TOP COWLING DOES NOT UNLOCK If the top cowling stays locked when the...

  • Page 112: 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 113: Index

    EMP00010 Chapter 6 INDEX INDEX............6-1...
  • Page 114 EMP10010 Engine fails to operate......5-9 INDEX Engine oil ..........1-11 Engine stop lanyard switch.....2-5 Exhaust leakage ........4-16 Adjusting idling speed ......4-14 Adjusting trim angle......3-19 Filling fuel ..........3-4 Basic boating rules ........1-6 Filling fuel and engine oil......3-4 Filling fuel tank .........4-4 Battery care..........4-7 Filling oil............3-5 Battery requirement ......1-12 Bow down..........3-20...
  • Page 115 Maintenance chart ........4-9 Storing outboard motor ......4-4 Motor exterior ........4-27 Mounting height ........3-3 Tachometer..........2-9 Temporary action in emergency....5-5 Mounting the outboard motor ....3-2 Throttle friction adjusting screw ....2-6 Neutral interlock trigger ......2-3 Tilt support lever........2-8 Neutral throttle lever .......2-3 Tilting up/down ........3-21 Top cowling does not unlock ....5-12 Oil level indicator......2-11, 3-7 Top cowling release lever.....2-19...
  • Page 116 1. Be sure your new Yamaha is registered for warranty. Your boat dealer should do this at the time of sale. Make sure your dealer gives you a copy of the completed Yamaha regis- tration card for your records.
  • Page 117 5. Your warranty applies specifically to repairs made in the country of purchase. If your U.S.-purchased Yamaha needs warranty service while in Canada, or your Canadian 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 118 Owner’s Manual. The owner of the outboard motor shall give notice to an authorized Yamaha marine dealer of any and all apparent defects within ten (10) days of discovery and make the motor available at that time for inspection and repairs at the dealer’s place of business.
  • Page 119 TRANSFER OF WARRANTY. Transfer of the warranty from the original purchaser to any subsequent purchaser is possible by having the motor inspected by an authorized Yamaha outboard dealer and requesting the dealer to submit a change of registration to Yamaha Motor Corporation, U.S.A.
  • Page 120 The federal government requires each manufacturer of a motor vehicle to maintain a complete, up-to-date list of all first purchasers against the possibility of a safety-related defect and recall. This list is complied from the purchase registrations sent to Yamaha Motor Corporation, U.S.A.
  • Page 121 Yamaha outside the U.S.A. or Canada, please contact an 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 122 Printed in Japan March 2001—0.5 × 1 ! 65J-28199-15 (225FETO/L225FETO/250BETO/L250BETO) Printed on recycled paper...

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