Yamaha F25 Owner's Manual
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Yamaha F25 Owner's Manual

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F25
T25
OWNER'S MANUAL
Read this manual carefully before operating this
LIT-18626-11-12
outboard motor.
6BP-28199-3B-E0

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Summary of Contents for Yamaha F25

  • Page 1 OWNER’S MANUAL Read this manual carefully before operating this LIT-18626-11-12 outboard motor. 6BP-28199-3B-E0...
  • Page 2 EMU25064 Les gaz d’échappement du moteur de ce produit contiennent des substances chimiques connues dans l’État de Californie pour provoquer le cancer, des anomalies congénitales et des troubles de la reproduction. ZMU07696 Read this manual carefully before operating this outboard motor. Keep this manual onboard in a waterproof bag when boating.

  • Page 3: Important Manual Information

    Any damage tain maximum enjoyment from your new resulting from neglect of these instructions is Yamaha. If you have any question about the not covered by warranty. operation or maintenance of your outboard Some countries have laws or regulations re- motor, please consult a Yamaha dealer.

  • Page 4: Table Of Contents

    Table of contents Safety information......1 Specifications and requirements ........16 Outboard motor safety ..... 1 Specifications......... 16 Propeller ..........1 Rotating parts ........1 Installation requirements....17 Hot parts..........1 Boat horsepower rating ..... 17 Electric shock ........1 Mounting motor .........
  • Page 5 Table of contents Engine stop button ......33 Engine shut-off cord (lanyard) ... 48 Manual starter handle......34 Engine oil........... 49 Starter button........34 Engine ..........49 Main switch........34 Flushing device ......... 49 Steering friction adjuster....35 Install top cowling ......49 Power trim and tilt switch on remote Checking power trim and tilt control or tiller handle.....
  • Page 6 Flushing power unit ......80 IMPORTANT WARRANTY Cleaning the outboard motor..... 81 INFORMATION IF YOU USE Checking painted surface of YOUR YAMAHA OUTSIDE outboard motor....... 81 THE U.S.A. OR CANADA ..110 Periodic maintenance..... 81 Replacement parts ......82 INDEX ..........111 Maintenance interval guidelines ..

  • Page 7: Safety Information

    Safety information tor and the clamp bracket when the motor is EMU33623 Outboard motor safety trimmed or tilted. Keep body parts out of this Observe these precautions at all times. area at all times. Be sure no one is in this area before operating the power trim and tilt EMU36502 Propeller...

  • Page 8: Gasoline Exposure And Spills

    Overloading or incorrect weight Have an approved PFD on board for every distribution can compromise the boats han- occupant. Yamaha recommends that you dling and lead to an accident, capsizing or must wear a PFD whenever boating. At a...

  • Page 9: Avoid Collisions

    Safety information EMU33773 EMU44161 Avoid collisions Accident reporting Scan constantly for people, objects, and oth- Boat operators are required by law to file a er boats. Be alert for conditions that limit your Boating Accident Report with their boating visibility or block your vision of others. law enforcement agency if their boat is in- volved in any of the following accidents: There is loss of life or probable loss of...

  • Page 10: Passenger Training

    Safety information go to boatus.org. For Canada In the U.S.A. All operators of pleasure craft must illustrate United States Coast Guard competency by means of a Pleasure Craft Consumer Affairs Staff (G-BC) Operators Card with the exception of Per- Office of Boating, Public, and Consumer Af- sonal Water Craft used for rental purposes fairs which require a rental checklist be complet-...

  • Page 11: Basic Boating Rules (Rules Of The Road)

    Safety information Suite 8 vessel. Normally, you should not cross in Bolton, ON front of the vessel with the right-of-way. You L7E 1H1 should slow down or change directions brief- http://www.nmma.org/ ly and pass behind the other vessel. You should always move in such a way that the operator of the other vessel can see what EMU33692 Basic boating rules (Rules of...

  • Page 12: Other Special Situations

    Safety information Meeting Overtaking If you are meeting another power vessel If you are passing another vessel, you are head on, and are close enough to run the risk the “Give-Way” vessel. This means that the of collision, neither of you has the right-of- other vessel is expected to maintain its way Both of you should alter course to avoid course and speed.
  • Page 13 Safety information trawls are considered to be “fishing vessels” This system uses buoys and signs with dis- under the International Rules. Vessels with tinctive shapes and colors to show regulatory trolling lines are not considered fishing ves- or advisory information. These markers are sels.
  • Page 14 Safety information ZMU01708...

  • Page 15: General Information

    Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is sto- len.
  • Page 16 General information ZMU06689 ZMU08191 1. ICES-002 Compliance Label 1. Compliance mark and manufactured date label location Manufactured date Regulatory Compliance Mark (RCM) The manufactured date is stamped on the la- Engines affixed with this mark conform to bel for the engines that conform to the regu- certain portion(s) of the Australian Radio lations for U.S.

  • Page 17: Read Manuals And Labels

    Read all labels on the outboard motor and the boat.  If you need any additional information, contact your Yamaha dealer. EMU33836 Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements. F25A, F25EA, T25A ZMU07710...
  • Page 18 General information F25EHA, F25EHB ZMU08301...
  • Page 19 General information F25MHA, F25MHB ZMU06594...
  • Page 20 General information 6EE-H1994-40 6EE-H1995-40 6EE-H1994-50 6EE-H1995-50 6EE-G2794-40 6EE-G2794-50 ZMU05740 EMU33913 Contents of labels EWM01672 The above warning labels mean as follows. WARNING Read Owner’s Manuals and labels.  EWM01692 Wear an approved personal flotation  WARNING device (PFD). Emergency starting does not have start- Attach engine shut-off cord (lanyard) to ...
  • Page 21 General information Electrical hazard EMU35133 Symbols The following symbols mean as follows. Notice/Warning ZMU05666 ZMU05696 Read Owner’s Manual ZMU05664 Hazard caused by continuous rotation ZMU05665...

  • Page 22: Specifications And Requirements

    Specifications and requirements Dry weight (AL) L: EMU34522 Specifications 79 kg (174 lb) (F25EA) TIP: 80 kg (176 lb) (F25MHB) 82 kg (181 lb) (F25A) “(AL)” stated in the specification data below 83 kg (183 lb) (F25EHB) represents the numerical value for the alumi- 92 kg (203 lb) (T25A) num propeller installed.

  • Page 23: Installation Requirements

    Specifications and requirements Battery rating (CCA/SAE): Engine oil quantity (without oil filter re- 245–433 A (F25A, F25EA, F25EHA, placement): F25EHB, T25A) 1.4 L (1.48 US qt, 1.23 Imp.qt) Battery rating (MCA/ABYC): Engine oil quantity (with oil filter replace- 323–520 A (F25A, F25EA, F25EHA, ment): F25EHB, T25A) 1.6 L (1.69 US qt, 1.41 Imp.qt)

  • Page 24: Mounting Motor

    Battery cable EMU25695 The battery cable size and length are critical. Battery requirements Consult your Yamaha dealer about the bat- EMU25716 tery cable size and length. Specifications of Battery EMU36303 Use a fully charged battery that meets the following specifications.

  • Page 25: Without A Rectifier Or Rectifier Regulator

    Specifications and requirements cessory battery, consult your Yamaha dealer Your Yamaha dealer can help you select the about battery selection and correct wiring. right propeller for your boating needs. Select Battery isolator a propeller that will allow the engine to reach...

  • Page 26: Start-In-Gear Protection

    1.6 L (1.69 US qt, 1.41 Imp.qt) oline or premium unleaded fuel. Yamaha recommends that you use alcohol-free gaso- If oil grades listed under Recommended en- line (see Gasoline with Ethanol) whenever gine oil grade 1 are not available, select an possible.
  • Page 27 However, if gasoline with Ethanol is the from the gasoline in a layer at the bottom only fuel available in your area, your Yamaha of the fuel tank. This ethanol and water outboard motor is calibrated to run properly...

  • Page 28: Gasoline Additives

    Consult your authorized However, depending on the model it might Yamaha dealer for a 10-micron filter that not be required. meets your engine’s requirements. EMU41354...

  • Page 29: Motor Disposal Requirements

    Specifications and requirements peller pitch may be necessary. Consult your Yamaha dealer for details. EMU25223 Emission control information EMU25232 This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for ma- rine SI engines. See the label affixed to your engine for details.

  • Page 30: Star Labels

    IN NEUTRAL FUEL : GASOLINE SPARK PLUG : SPARK PLUG GAP (mm) : VALVE LASH (mm) IN : EX : YAMAHA MOTOR CO.,LTD. ZMU01702 ZMU08274 EMU25275 EMU40341 Star labels Two Stars—Very Low Emission The two-star label identifies engines that Your outboard motor is labeled with a Cali- meet the Air Resources Board’s Personal...
  • Page 31 Specifications and requirements ZMU01704 EMU33862 Four Stars—Super Ultra Low Emission The four-star label identifies engines that meet the Air Resources Board’s Sterndrive and Inboard marine engine 2009 exhaust emission standards. Personal Watercraft and Outboard marine engines may also comply with these standards. Engines meet- ing these standards have 90% lower emis- sions than One Star-Low-Emission engines.

  • Page 32: Components

    Components EMU46721 Components diagram TIP: * May not be exactly as shown; also may not be included as standard equipment on all mod- els (order from dealer). F25A, F25EA, T25A ZMU07410 1. Top cowling 16. Remote control box (side mount type)* 2.
  • Page 33 Components F25EHA, F25MHA ZMU07553 1. Top cowling 21. Tilt lock lever 2. Cowling lock lever 22. Flushing device 3. Idle hole 23. Starter button* 4. Drain screw 24. Fuel tank* 5. Anti-cavitation plate 6. Trim tab 7. Propeller 8. Cooling water inlet 9.

  • Page 34: Fuel Tank

    Components F25EHB, F25MHB ZMU07531 1. Top cowling 21. Clip 2. Flushing device 22. Restraint cable attachment 3. Tilt support knob 23. Steering friction adjuster 4. Clamp bracket 24. Fuel tank* 5. Tilt lock lever 6. Anode EMU25804 Fuel tank 7. Cooling water inlet If your model was equipped with a portable 8.

  • Page 35: Fuel Joint

    Components allowed to enter the fuel tank while operating the engine. EMU26182 Remote control box The remote control lever actuates both the shifter and the throttle. The electrical switch- es are mounted on the remote control box. ZMU07442 1. Fuel joint ZMU01723 2.

  • Page 36: Neutral Interlock Trigger

    Components ZMU01725 ZMU01728 1. Fully open 1. Neutral “ ” 2. Fully closed 2. Forward “ ” 3. Reverse “ ” TIP: 4. Shift 5. Fully closed The neutral throttle lever will operate only 6. Throttle when the remote control lever is in neutral. 7.

  • Page 37: Gear Shift Lever

    Components 2. Neutral “ ” 3. Reverse “ ” EMU25943 Throttle grip The throttle grip is on the tiller handle. Turn the grip counterclockwise to increase speed and clockwise to decrease speed. EMU25925 Gear shift lever Move the gear shift lever forward to engage the forward gear or rearward to engage the reverse gear.

  • Page 38: Throttle Friction Adjuster

    Components ZMU06488 ZMU03169 1. Throttle indicator ZMU02001 1. Throttle indicator EMU25977 Throttle friction adjuster A friction device provides adjustable resis- tance to movement of the throttle grip or the remote control lever, and can be set accord- ing to operator preference. To increase resistance, turn the adjuster When constant speed is desired, tighten the clockwise.

  • Page 39: Engine Stop Button

    Components cord will pull out the clip, stopping ignition to the engine. This will prevent the boat from running away under power. WARNING! At- tach the engine shut-off cord to a secure place on your clothing, or your arm or leg while operating.

  • Page 40: Manual Starter Handle

    Components ZMU06526 ZMU02083 EMU26092 Main switch The main switch controls the ignition system; its operation is described below. ” (off) “  With the main switch in the “ ” (off) posi- tion, the electrical circuits are off, and the key can be removed.

  • Page 41: Steering Friction Adjuster

    Components ZMU06497 EMU31433 1. Nut Steering friction adjuster A friction device provides adjustable resis- Nut tightening torque: tance to the steering mechanism, and can be 4.0 Nm (0.41 kgf-m, 3.0 ft-lb) set according to operator preference. An ad- juster lever is located on the bottom of the til- TIP: ler handle bracket.

  • Page 42: Power Trim And Tilt Switch On Bottom Cowling

    Components operator, increasing the risk of collision with another boat or an obstacle. ZMU01720 ZMU06495 1. Power trim and tilt switch EMU26246 Trim tab with anode EWM00841 WARNING An improperly adjusted trim tab could cause difficult steering. Always test run EMU26156 after the trim tab has been installed or re- Power trim and tilt switch on bottom...

  • Page 43: Trim Tab

    Components ZMU02822 ZMU06498 1. Trim tab 1. Trim tab 2. Bolt 2. Bolt Bolt tightening torque: Bolt tightening torque: 18 Nm (1.84 kgf-m, 13.3 ft-lb) 8 Nm (0.82 kgf-m, 5.9 ft-lb) EMU26254 EMU26263 Trim tab Trim rod (tilt pin) The position of the trim rod determines the EWM00841 WARNING minimum trim angle of the outboard motor in...

  • Page 44: Tilt Support Knob

    Components ZMU06500 ZMU06543 ECM00661 1. Tilt lock lever NOTICE Do not use the tilt support lever or knob when trailering the boat. The outboard motor could shake loose from the tilt sup- port and fall. If the motor cannot be trailered in the normal running position, use an additional support device to se- cure it in the tilt position.

  • Page 45: Cowling Lock Lever

    Components tilt position. details on how to read the alert indicator, see page 41. EMU40762 Cowling lock lever The cowling lock levers are used to secure the top cowling. ZMU06506 1. Alert indicator ZMU08557 1. Cowling lock lever(s) EMU26464 Flushing device This device is used to clean the cooling wa- ter passages of the motor using a garden hose and tap water.

  • Page 46: Instruments And Indicators

    Instruments and indicators EMU36016 Indicators EMU36025 Low oil pressure-alert indicator If oil pressure drops too low, this indicator will light up. For further information, see page 41. ECM00023 NOTICE Do not continue to run the engine if the  low oil pressure-alert indicator is on ZMU06508 and the engine oil level is lower.

  • Page 47: Engine Control System

    Alert system ECM00093 NOTICE Do not continue to operate the engine if an alert device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected. EMU2681D Overheat alert This engine has an overheat-alert device. If If the alert system has activated, stop the en-...
  • Page 48 If the alert system has activated, stop the en- gine as soon as it is safe to do so. Check the oil level and add oil as needed. If the oil level is correct and the alert device does not switch off, consult your Yamaha dealer.

  • Page 49: Installation

    Installation EMU26903 Installation The information presented in this section is intended as reference only. It is not possible to provide complete instructions for every possible boat and motor combination. Proper mounting depends in part on experience and the specific boat and motor combination. EWM01591 WARNING ZMU01760...

  • Page 50: Clamping The Outboard Motor

    Test runs at different heights can help de- off the transom. termine the optimum mounting height. Consult your Yamaha dealer or boat man- ufacturer for further information on deter- mining the proper mounting height. For instructions on setting the trim angle of ...
  • Page 51 Installation packaging. If used, they must be of at least the same quality of material and strength and must be tightened se- curely. After tightening, test run the engine and check their tightness. [EWM00652] ZMU02637 1. Bolts...

  • Page 52: Operation

    Operation procedure could result in reduced engine EMU36382 First-time operation life or even severe engine damage. [ECM00802] EMU36393 EMU27086 Fill engine oil Procedure for 4-stroke models Your new engine requires a period of 10 The engine is shipped from the factory with- hours break-in to allow mating surfaces of out engine oil.

  • Page 53: Fuel Level

    If any water is found in the fuel, or if a ver and lift off the top cowling. significant amount of debris is found, the fuel tank should be checked and cleaned by a Yamaha dealer. ZMU06085 EMU36443 Fuel system...

  • Page 54: Engine Shut-Off Cord (Lanyard)

    Operation turns smoothly and that it completely re- turns to the fully closed position. Look for loose or damaged connections of  the throttle cable and shift link. Remote control models: Turn the steering wheel full-right and full-  left. Make sure operation is smooth and unrestricted throughout the whole range with no binding or excessive free play.

  • Page 55: Engine Oil

    Check that the oil level on the oil dipstick is between the upper and lower marks. ZMU06517 Consult your Yamaha dealer if the oil 1. Fitting level is not at the proper level or if it ap- 2. Flushing device pears milky or dirty.

  • Page 56: Checking Power Trim And Tilt System

    EMU36585 Battery Check the battery’s charge. If your boat is equipped with a Yamaha digital speedome- ter, the voltmeter and low battery alert func- EMU38911 Checking power trim and tilt system tions will help you monitor the battery’s EWM01971 charge.

  • Page 57: Filling Fuel

    Operation EMU43164 Filling fuel EWM01831 WARNING Gasoline and its vapors are highly flam-  mable and explosive. Always refuel ac- cording to this procedure to reduce the risk of fire and explosion. Gasoline is poisonous and can cause  injury or death. Handle gasoline with ZMU07443 care.
  • Page 58 Operation While pressing and holding the pressure Fuel tank capacity: relief tab under the fuel tank cap, slowly 25 L (6.60 US gal, 5.50 Imp.gal) turn the fuel tank cap counterclockwise 1/4 turn. ZMU07448 ZMU07446 TIP: Wipe up any spilled gasoline immediately ...

  • Page 59: Operating Engine

    Operation ZMU07444 ZMU07445 1. Air vent screw 1. Air vent screw Check the direction of the fuel hose. EMU27453 Operating engine Make sure that the arrow of the primer EWM00421 pump points toward the outboard motor. WARNING Before starting the engine, make sure ...

  • Page 60: Starting Engine

    Operation ZMU08027 1. Arrow 1. Fuel joint 2. Primer pump 2. Fuel hose TIP: Firmly connect the other end of the fuel hose to the joint on the fuel tank. When using the fuel tank on the boat, a  fuel valve may also be equipped on the boat.
  • Page 61 Operation Avoid accidentally pulling the cord dur-  ing normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.
  • Page 62 Operation TIP: If the throttle is opened too much, the en-  gine speed rises rapidly, causing the out- board motor to swivel toward the starboard side. Do not repeat opening and closing of the  throttle grip as this cause the spark plug to wet with fuel and prevent from the engine to start.
  • Page 63 Operation friction adjuster. If there is too much or leg. Then install the clip on the other resistance, it could be difficult to end of the cord into the engine shut-off move the throttle grip, which could switch. result in an accident. [EWM02251] EMU27597 Electric start / prime start models...
  • Page 64 Operation ” (on). NOTICE: Never turn be thrown forward. turn to “ the main switch to “ ” (start) Place the gear shift lever in neutral. while the engine is running. Do not keep the starter motor turning for more than 5 seconds. If the starter motor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it...
  • Page 65 Operation page 61. If the engine is warm and fails to start,  open the throttle slightly and try to start the engine again. If the engine still fails to start, see page 99. Slowly return the throttle grip to the fully closed position.

  • Page 66: Checks After Starting Engine

    Immediately after the engine starts, re- case or the cooling water pilot hole is lease the main switch and allow it to re- blocked. Consult your Yamaha dealer if ” (on). NOTICE: Never turn turn to “ the problem cannot be located and cor- the main switch to “...

  • Page 67: Warming Up Engine

    Pull the neutral interlock trigger up (if Check the oil level and add engine oil equipped). if necessary. Consult your Yamaha dealer if the cause for the low oil pressure alert cannot be found. [ECM01832]...
  • Page 68 Operation forward gear) or backward (for reverse gear) [about 35 (a detent can felt) for re- mote control models]. Be sure to check that the tilt lock lever is in the lock/down position (if equipped) before operating in reverse. ZMU06531 ZMU06528 TIP: Tiller handle models: The gear shift lever op-...

  • Page 69: Stopping Boat

    Operation ZMU06652 ZMU06521 After the engine is at idle speed in gear EMU31743 Stopping boat move the remote control lever / gear shift lever firmly and crisply into the neu- EWM01511 WARNING tral position. Do not use the reverse function to slow ...

  • Page 70: Stopping Engine

    Operation EMU27822 Stopping engine Before stopping the engine, first let it cool off for a few minutes at idle or low speed. Stop- ping the engine immediately after operating at high speed is not recommended. EMU43192 Procedure Push and hold the engine stop button or turn the main switch to “...

  • Page 71: Trimming Outboard Motor

    Operation Tighten the air vent screw by turning it the boat, sea conditions, and running speed. clockwise. ZMU07444 1. Trim operating angle 1. Air vent screw EMU38881 Remove the key if the boat will be left un- Adjusting trim angle for manual tilt attended.

  • Page 72: Adjusting Trim Angle (Power Trim And Tilt)

    Operation TIP: The outboard motor trim angle can be changed approximately 4 degrees by shifting the trim rod one hole. EMU27889 Adjusting trim angle (Power trim and tilt) EWM00754 WARNING ZMU06566 Be sure all people are clear of the out- ...

  • Page 73: Adjusting Trim Angle For Hydro Tilt Models

    Operation ZMU07537 Hold the rear of the top cowling with one 1. Power trim and tilt switch hand and tilt the engine to the desired angle. To raise the bow (trim-out), press the switch Place the tilt lock lever back into the lock “...

  • Page 74: Tilting Up And Down

    Operation Bow Up TIP: Too much trim-out puts the bow of the boat Depending on the type of boat, the outboard too high in the water. Performance and econ- motor trim angle may have little effect on the omy are decreased because the hull of the trim of the boat when operating.

  • Page 75: Procedure For Tilting Up (Manual Tilt Models)

    Operation on page 64. Never tilt the outboard mo- tor while the engine is running. Severe damage from overheating can result. Do not tilt up the engine by pushing the  tiller handle (if equipped) because this could break the handle. EMU43222 Procedure for tilting up (manual tilt models)

  • Page 76: Procedure For Tilting Up (Hydro Tilt Models)

    Operation position to support the outboard motor. NOTICE: Do not use the tilt support lever or knob when trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the motor cannot be trailered in the normal running position, use an additional support device to secure it in the tilt position.
  • Page 77 Operation Press the power trim and tilt switch “ ” Push the tilt support knob into the clamp (up) until the outboard motor has tilted bracket support engine. WARNING! After tilting the outboard up completely. motor, be sure to support it with the tilt support knob or tilt support lever.

  • Page 78: Procedure For Tilting Down (Manual Tilt Models)

    Operation EMU30193 Procedure for tilting down (manual tilt models) Place the tilt lock lever in the lock posi- tion. ZMU06545 Slowly tilt the outboard motor down. Place the tilt lock lever in the lock posi- tion. ZMU02306 Slightly tilt the engine up until the tilt sup- port bar is automatically released.

  • Page 79: Shallow Water

    Operation speed when using the shallow water Push the power trim and tilt switch “ ” (down) to lower the outboard motor to cruising system. The tilt lock mecha- nism does not work while the shallow the desired position. water cruising system is being used. Hitting an underwater obstacle could cause the outboard motor to lift out of the water, resulting in loss of control.

  • Page 80: Hydro Tilt Models

    Operation ZMU03087 ZMU04851 To return the outboard motor to the nor- mal running position, place the remote control lever / gear shift lever in neutral. Place the tilt lock lever in the lock/down position, then slightly tilt the outboard motor up until the tilt support bar auto- matically returns to the free position.

  • Page 81: Power Trim And Tilt Models

    Operation the water, increasing the chance of ac- ver up to the release position and slowly cident and personal injury. tilt the outboard motor down. Push the tilt lock lever down to the lock ECM00261 position. NOTICE Do not tilt the outboard motor up so that the cooling water inlet on the lower unit is above the surface of the water when set- ting up for and cruising in shallow water.

  • Page 82: Cruising In Other Conditions

    Slightly tilt the outboard motor up to the Cruising in muddy, turbid, or acidic water desired position using the power trim Yamaha strongly recommends that you use and tilt switch. WARNING! Using the the optional chromium-plated water pump kit power trim and tilt switch on the bot-...

  • Page 83: Maintenance

    Consult your Leaking fuel is a fire hazard. When  Yamaha dealer for further details. transporting and storing the outboard motor, disconnect the fuel line from the EMU28237 Clamp screw mounting models...

  • Page 84: Storing Outboard Motor

    EMU28242 Storing outboard motor When preparing to store a boat for extended When storing your Yamaha outboard motor periods (2 months or longer) it is best to com- for prolonged periods of time (2 months or pletely remove all gasoline from the boat’s longer), several important procedures must fuel tank(s).

  • Page 85: Lubrication

    “Yamaha Fuel Conditioner and Stabilizer” to each gallon of fuel. TIP: 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 86: Cleaning And Anticorrosion Measures

    Lubricate all grease fittings. For further details, see page 86. TIP: For long-term storage, fogging the engine with fogging oil is recommended. Contact your Yamaha dealer for information about fogging oil and procedures for your outboard motor. EMU30268 Cleaning and anticorrosion...

  • Page 87: Cleaning The Outboard Motor

    Yamaha dealer or other qualified achieve better results. mechanic do the work. For cooling system flushing instructions, ...

  • Page 88: Replacement Parts

    Maintenance A service manual is available for purchase through your Yamaha dealer for owners who have the mechanical skills, tools, and other equipment necessary to perform mainte- nance not covered by this owner’s manual. EMU28512 Replacement parts If replacement parts are necessary, use only genuine Yamaha parts or parts of equivalent design and quality.

  • Page 89: Maintenance Chart 1

     be flushed with clean water after each use. The “ ” symbol indicates the check-ups which you may carry out yourself. The “ ” symbol indicates work to be carried out by your Yamaha dealer. Initial Every Item Actions...
  • Page 90 Maintenance Initial Every Item Actions Page 20 hours 100 hours 300 hours 500 hours (3 months) (1 year) (3 years) (5 years) Inspection or Fuel filter (can be replacement as disassembled) necessary Fuel line Inspection — Inspection or Fuel line replacement as —...

  • Page 91: Maintenance Chart 2

    Inspection or nections/wire cou- replacement as — pler connections necessary (Yamaha) Inspection — Meter/gauge Inspection and Fuel tank (Yamaha cleaning as neces- — portable tank) sary EMU46250 *1 cylinder head *2 exhaust cover, exhaust guide EMU46080 Maintenance chart 2 Every...

  • Page 92: Greasing

    Maintenance EMU41302 Greasing Yamalube Marine Grease F25A, F25EA, T25A ZMU06567...
  • Page 93 Maintenance F25EHA, F25MHA ZMU06554...

  • Page 94: Cleaning And Adjusting Spark Plug

    The condition attempt to diagnose any problems yourself. of the spark plug can indicate something Instead, take the outboard motor to a about the condition of the engine. For exam- Yamaha dealer. You should periodically re-...

  • Page 95: Checking Fuel Filter

    DPR6EB-9 replace it. For cleaning or replacement of the fuel filter, consult your Yamaha dealer. Be sure to use the specified spark plug, otherwise the engine may not operate properly. Before fitting the spark plug, measure the electrode gap with a wire thickness gauge;...

  • Page 96: Changing Engine Oil

    For idle speed specifications, see page 16. If you have difficulty verifying the idle speed, or the idle speed requires adjustment, consult a Yamaha dealer or other qualified mechanic. ZMU03659 EMU38807 Changing engine oil Start the engine.
  • Page 97 Then tighten 1/4 to 1/2 turn more. Tighten per and lower marks. Consult your the drain screw to the correct torque with a Yamaha dealer if the oil level is out of torque wrench as soon as possible. specified level.

  • Page 98: Inspecting Wiring And Connectors

    ” (off) and remove the key, For more information on the disposal of  and remove the clip from the engine shut- used oil, consult your Yamaha dealer. off switch. Turn off the battery cut-off Change the oil more often when operating ...

  • Page 99: Removing Propeller

    Maintenance ZMU08156 ZMU01897 Checkpoints 1. Cotter pin Check each of the propeller blades for ero- 2. Propeller nut  3. Washer sion from cavitation or ventilation, or other 4. Spacer damage. 5. Propeller Check the propeller shaft for damage.  6.
  • Page 100 Maintenance bend the ends over securely. Otherwise, the propeller could come off during oper- ation and be lost. Apply Yamalube Marine Grease or a corrosion resistant grease to the propel- ler shaft. Install the spacer (if equipped), thrust washer, washer (if equipped), and pro- peller on the propeller shaft.

  • Page 101: Changing Gear Oil

    Never get under the lower unit while it  case may be damaged. Have a is tilted, even when the tilt support lever Yamaha dealer check and repair the or knob is locked. Severe injury could outboard motor. [ECM00714] occur if the outboard motor accidental- TIP: ly falls.

  • Page 102: Inspecting And Replacing Anode(S)

    ZMU03664 7 Nm (0.71 kgf-m, 5.2 ft-lb) EMU29318 Inspecting and replacing anode(s) Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a Yamaha dealer for replacement of external anodes.

  • Page 103: Checking Battery (For Electric Start Models)

    Consult a tery’s charge. If the battery needs charg- Yamaha dealer for inspection and replace- ing, consult your Yamaha dealer. ment of internal anodes attached to the pow- Check the battery connections. They er unit.

  • Page 104: Disconnecting The Battery

    Maintenance ZMU01811 1. Red cable 2. Black cable 3. Battery The electrical contacts of the battery and cables must be clean and properly con- nected, or the battery will not start the engine. EMU29372 Disconnecting the battery Turn off the battery cut-off switch (if equipped) and main switch.

  • Page 105: Trouble Recovery

    Q. Has fuel pump malfunctioned? If your outboard motor requires repair, bring A. Have serviced by a Yamaha dealer. it to your Yamaha dealer. If the engine trouble-alert indicator is flash- Q. Are spark plug(s) fouled or of incorrect ing, consult your Yamaha dealer.
  • Page 106 Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel. Q. Is carburetor clogged? A. Have serviced by a Yamaha dealer. Q. Is fuel filter clogged? A. Clean or replace filter. Q. Is fuel joint connection incorrect? A.
  • Page 107 Q. Is fuel system obstructed? Q. Is water pump or thermostat faulty? A. Check for pinched or kinked fuel line or A. Have serviced by a Yamaha dealer. other obstructions in fuel system. Q. Is there excess water in fuel filter cup? Q.

  • Page 108: Temporary Action In Emergency

    EWM00632 Q. Is steering pivot loose or damaged? WARNING A. Tighten or have serviced by a Yamaha Substituting an incorrect fuse or a piece dealer. of wire could allow excessive current EMU29434 flow.

  • Page 109: Power Trim And Tilt Will Not Operate

    Trouble Recovery ZMU02816 ZMU06565 1. Manual valve screw 1. Fuse puller 2. Cap Put the engine in the desired position, 3. Fuse (20 A, 30 A) then tighten the manual valve screw by 4. Spare fuse (20 A, 30 A) turning it counterclockwise.

  • Page 110: Emergency Starting Engine (Manual Start Model)

    Trouble Recovery ing normal operation. Loss of engine the manual starter. power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward. Make sure no one is standing behind ...
  • Page 111 Trouble Recovery ZMU02026 ZMU06579 Insert the knotted end of the emergency Pass the start-in-gear protection cable starter rope into the notch in the flywheel under the fuel line and remove the magnet and wind the rope 1 or 2 turn(s) spring from it.

  • Page 112: Emergency Starting Engine (Electric Start Model)

    Trouble Recovery and that the clip is attached to the en- EMU38852 Emergency starting engine (electric gine shut-off switch. The main switch start model) must be “ ” (on), if equipped. Remove the top cowling and protective cover. ZMU01771 ZMU06585 Pull off the 10-pin connector from the clamp and remove the flywheel magnet cover (if equipped).

  • Page 113: Treatment Of Submerged Motor

    EMU33502 Treatment of submerged motor If the outboard motor is submerged, immedi- ately take it to a Yamaha dealer. Otherwise some corrosion may begin almost immedi- ately. NOTICE: Do not attempt to run the outboard motor until it has been com- pletely inspected.

  • Page 114: Consumer Information

    Owner’s Manual. The owner of the outboard motor shall give notice to an authorized Yamaha Outboard Motor Dealer of any and all apparent defects within ten (10) days of discovery and make the motor available at that time for inspection and repairs at the dealer’s place of business.
  • Page 115 TRANSFER OF WARRANTY Transfer of the warranty from the original purchaser to any subsequent purchaser is possible by having the motor inspected by an authorized Yamaha Outboard Motor Dealer and requesting the dealer to submit a change of registration to Yamaha within ten (10) days of the transfer.

  • Page 116: Important Warranty Information If You Use Your Yamaha Outside The U.s.a. Or Canada

    He will be able to contact Yamaha on your behalf to see if any refund can be provided.

  • Page 117: Index

    INDEX Accident reporting........3 Electric shock.......... 1 Alcohol and drugs ........2 Emergency equipment ......23 Alert indicator........39 Emergency starting engine (electric Alert system .......... 41 start model)........106 Anode(s), inspecting and replacing ..96 Emergency starting engine (manual Anti-fouling paint ........
  • Page 118 INDEX Identification numbers record ....9 Passengers ..........2 Idle speed, inspecting ......89 Passenger training ........4 Impact damage ........102 People in the water ......... 2 Installation requirements....... 17 Periodic maintenance ......81 Instruments and indicators....40 Personal flotation devices (PFDs) ..2 Power trim and tilt ........
  • Page 119 INDEX Steering friction adjuster ....... 35 Stopping boat........63 Stopping engine........64 Stop switches........61 Storing outboard motor ......78 Submerged outboard motor....107 Throttle friction adjuster ......32 Throttle grip........... 31 Throttle indicator ........31 Tiller handle .......... 30 Tilting up and down.......
  • Page 121 — right out of the box. Yamalube — Take care of your Yamaha with legendary Yamalube oils, lubricants, and care products. They’re formulated and approved by the toughest judges we know: the Yamaha engineering teams that know your Yamaha from the inside out.
  • Page 122 Printed in Japan December 2015–0.5  1 ! Printed on recycled paper...

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