
Read this manual carefully before operating thisoutboard motor.OWNER’S MANUALF2.5F4F6LIT-18626-10-136BV-F8199-37-E0U6BV37E0.book Page 1 Wednesday,
Safety information4presented in the following section are con-densed- and have been provided for yourconvenience only.Contact the U.S. Coast Guard, th
Trouble Recovery94A. Connect correctly.Engine vibrates excessively.Q. Is propeller damaged?A. Have propeller repaired or replaced.Q. Is propeller shaf
Trouble Recovery95● An unguarded, rotating flywheel is verydangerous. Keep loose clothing andother objects away when starting the en-gine. Use the eme
Trouble Recovery969. Install 2 bolts into the rear section of thefuel tank.10. Prepare the engine for starting; see page54. Be sure the engine is in n
Trouble Recovery97● Avoid accidentally pulling the cord dur-ing normal operation. Loss of enginepower means the loss of most steeringcontrol. Also, wi
Trouble Recovery985. Reinstall 2 bolts to secure the fuel tank.6. Insert the knotted end of the emergencystarter rope into the notch in the flywheelma
Trouble Recovery99EMU33501Treatment of submerged motorIf the outboard motor is submerged, immedi-ately take it to a Yamaha dealer. Otherwisesome corro
Consumer information100EMU29836YAMAHA FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTYZMU07048Yamaha Motor Corporation, U.S.A. and Yamaha Motor
Consumer information101ZMU07047SPECIFIC PARTS EXCLUDED FROM WARRANTY. Parts replaced due to normal wear or routine maintenance such as oil, spark plug
Consumer information102EMU29845IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE U.S.A. OR CANADAWelcome to the Yamaha Family!Congratu
EMU43021For your best ownership experience, think Genuine Yamaha!Genuine Yamaha Parts — Genuine Yamaha replacement parts are the exact same partsas th
Safety information5Stand-on vesselThe vessel with the right-of-way has the dutyto continue its course and speed, except toavoid an immediate collision
Printed in FranceMay 2013–0.3 × 1 CRU6BV37E0.book Page 1 Wednesday, May 1, 2013 8:56 AM
Safety information6CrossingWhen two power driven vessels are crossingeach other’s path close enough to run the riskof collision, the vessel which has
Safety information7are passed on the starboard (right) side whenproceeding from open water into port, andblack buoys are to port (left) side. When nav
Safety information8ZMU01708U6BV37E0.book Page 8 Wednesday, May 1, 2013 8:56 AM
General information9EMU25171Identification numbers recordEMU25184Outboard motor serial numberThe outboard motor serial number is stampedon the label a
General information10EMU33523Read manuals and labelsBefore operating or working on this outboard motor:● Read this manual.● Read any manuals supplied
General information11EMU44250Contents of labelsThe above warning labels mean as follows.1WARNINGEWM02730Gasoline is highly flammable and explo-sive. S
General information12EMU35132SymbolsThe following symbols mean as follows.Notice/WarningRead Owner’s ManualHazard caused by continuous rotationElectri
General information13EMU42710Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements.F4, F64312ZMU06795U6BV
ZMU07696Les gaz d’échappement du moteur de ce produit contiennent des substances chimiques connues dans l’État de Californie pour provoquer le cancer,
General information14ZMU068611234Gasoline is highly flammable and explosive.Shut off engine before refueling. Tighten tankcap and air vent valve when
General information15EMU44260Contents of labelsThe above warning labels mean as follows.1WARNINGEWM01691Emergency starting does not have start-in-gear
General information16Electrical hazardZMU05666U6BV37E0.book Page 16 Wednesday, May 1, 2013 8:56 AM
Specifications and requirements17EMU38091SpecificationsTIP:“(AL)” stated in the specification data belowrepresents the numerical value for the alumi-n
Specifications and requirements18Starting carburetion system:Choke valveValve clearance IN (cold engine):0.08–0.12 mm (0.0032–0.0047 in)Valve clearanc
Specifications and requirements19EMU43000Mounting the outboard motorF2.5WARNINGEWM01570● Improper mounting of the outboard mo-tor could result in haza
Specifications and requirements20F4, F6EMU39191Start-in-gear protection (F4, F6)Yamaha outboard motors are equipped withstart-in-gear protection devic
Specifications and requirements21a gasoline that is advertised as Top Tier De-tergent Gasoline. Failure to comply with theserecommendations may also r
Specifications and requirements22Gasoline FiltrationYamaha outboard motors are equipped withinternal fuel filters. However, excessive wateror debris e
Specifications and requirements23NOTICEECM02420Painted sacrificial anodes will not providecorrosion protection.EMU36341Motor disposal requirementsNeve
Important manual informationEMU44140To the ownerThank you for selecting a Yamaha outboardmotor. This Owner’s Manual contains infor-mation needed for p
Specifications and requirements24EMU39201Manufactured date labelThis label is attached to the clamp bracket.F2.5F4, F6EMU25274Star labelsYour outboard
Specifications and requirements25EMU40330One Star—Low EmissionThe one-star label identifies engines thatmeet the Air Resources Board’s PersonalWatercr
Components26EMU2579YComponents diagramTIP:* May not be exactly as shown; also may not be included as standard equipment on all models(order from deale
Components27F4, F6ZMU0749512311121315142119 1820 16222324254265687910171. Top cowling2. Cowling lock lever3. Carrying handle4. Anti-cavitation plate5.
Components28EMU44002Fuel tank (built-in fuel tank) (F2.5)This outboard motor is equipped with a built-in fuel tank and its parts are as follows.Fuel t
Components29To close the air vent valve, align the pointeron the air vent valve with the “CLOSE” posi-tion.EMU43102Fuel tank (portable fuel tank) (F4,
Components30EMU42990Fuel cockF2.5The fuel cock turns on and off the supply offuel from the fuel tank to the engine.F4, F6The fuel cock turns on and of
Components31F4, F6To send fuel from the fuel tank to the carbure-tor, align the fuel cock with the position for thebuilt-in fuel tank or portable fuel
Components32F4, F6Move the gear shift lever forward to engagethe forward gear or rearward to engage thereverse gear.EMU25942Throttle grip The throttle
Components33EMU39243Throttle friction adjusterThe throttle friction adjuster provides adjust-able resistance when the throttle grip isturned, and can
Table of contentsSafety information...1Outboard motor safety ... 1Propeller ...
Components34F2.5F4, F6EMU26003Engine stop button The engine stop button stops the enginewhen the button is pushed.F2.5F4, F6EMU26013Choke knob for pul
Components35F4, F6EMU39723Fuel joint cap (F4, F6)The fuel joint is equipped with the fuel jointcap. WARNING! When not using a portablefuel tank, make
Components36F2.5F4, F6To increase resistance, turn the steering fric-tion adjuster clockwise.To decrease resistance, turn the steering fric-tion adjus
Components37When the gear shift lever is moved to the neu-tral position or forward position, the outboardmotor can be tilted up.EMU39832Tilt support b
Components38F2.5F2.5F4, F6EMU42850Carrying handleF2.5A carrying handle is provided on the rear ofthe outboard motor. It enables you to carry theoutboa
Installation39EMU39731InstallationThe information presented in this section is in-tended as reference only. It is not possible toprovide complete inst
Installation404. Hold the carrying handle and the hand-grip on the front side of the bottom cowl-ing and lift up the outboard motor usingtwo people.5.
Installation41the mounting height is too high, cavitationtends to occur, thus reducing the propulsion;and if the propeller tips cut the air, the engin
Installation422. Attach one end to the restraint cable at-tachment and the other to a securemounting point on the boat. Otherwisethe engine could be c
Operation43EMU36381First-time operationEMU36391Fill engine oilThe engine is shipped from the factory withoutengine oil. If your dealer did not fill th
Table of contentsOperation ... 43First-time operation ... 43Fill engine oil ...
Operation44EMU43710Remove the top cowlingFor the following checks, remove the topcowling from the bottom cowling. To removethe top cowling, pull the c
Operation45● Check the throttle cable and throttle link forloose or damaged connections.● Check the shift link and start-in-gear protec-tion cable for
Operation46F4, F61. Place the outboard motor in an uprightposition (not tilted). NOTICE: If the mo-tor is not level, the oil level indicatedon the dip
Operation47After installing, check the fitting of the topcowling by pushing it with both hands. If thetop cowling is loose, have it repaired by yourYa
Operation486. Check the fitting of the top cowling bypushing it with both hands. NOTICE: Ifthe top cowling is not installed cor-rectly, water spray un
Operation49F4, F62. Fill the fuel tank, but do not overfill it.WARNING! Do not overfill. Otherwisefuel can expand and overflow if thetemperature incre
Operation503. Remove the fuel tank from the boat.4. To loosen the air vent screw, turn it coun-terclockwise until it stops.5. While pressing and holdi
Operation51● Dispose of rags properly according to locallaws or regulations.8. Turn the fuel tank cap clockwise to tight-en it until a click is heard.
Operation522. Align the fuel cock with the built-in fueltank position.3. Remove the top cowling, and thensqueeze the primer pump in the bottomcowling
Operation534. Remove the fuel joint cap. Align the fueljoint on the fuel hose with the fuel joint onthe outboard motor and connect the fuelhose secure
Table of contentsTreatment of submerged motor... 99Consumer information... 100YAMAHA FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED W
Operation54EMU27494Starting engineWARNINGEWM01600Before starting the engine, make sure thatthe boat is tightly moored and that you cansteer clear of a
Operation554. Place the choke knob in the “ ”(start) position. After the engine starts, re-turn the knob to the “ ” (run) position.TIP:● When restarti
Operation562. Attach the engine shut-off cord to a se-cure place on your clothing, or your armor leg. Then, install the clip on the otherend of the co
Operation576. After the engine starts, slowly return themanual starter handle to its original posi-tion before releasing it.7. Warm up the engine. For
Operation58or less. After the engine has warmed up, pushthe choke knob in fully. Failure to do so willshorten engine life.TIP:● If the choke knob is l
Operation59To shift from in gear to neutral1. Close the throttle so that the engineslows to idle speed.2. After the engine is at idle speed in gearmov
Operation60EMU39882Stopping boat (F4, F6)WARNINGEWM02321Do not use the reverse function to slowdown or stop the boat as it could causeyou to lose cont
Operation612. Close the air vent valve and air ventscrew.3. Align the fuel cock with the closed posi-tion.4. After stopping the engine, disconnect the
Operation625. Disconnect the fuel hose from the fueljoint on the fuel tank.EMU40111Trimming outboard motorWARNINGEWM00740Excessive trim for the operat
Operation63F4, F6EMU42830Adjusting trim angle for manual tilt modelsWARNINGEWM00400● Stop the engine before adjusting thetrim angle.● Use care to avoi
1Safety informationEMU33622Outboard motor safetyObserve these precautions at all times.EMU36501PropellerPeople can be injured or killed if they come i
Operation64EMU40121Adjusting boat trimGenerally, a boat is stable when the keel lineof the boat is up about 3 to 5 degrees. Withthe bow up, the boat m
Operation65WARNINGEWM02722Leaking fuel is a fire hazard. Close the airvent valve or air vent screw and place thefuel cock in the closed position if th
Operation66TIP:If the outboard motor is not facing forward, thetilt support lever cannot automatically turn tothe locked position. If the tilt support
Operation676. Hold the rear of the top cowling and fullytilt the outboard motor up. Slightly lowerthe outboard motor from the fully tilted upposition
Operation68EMU28062Shallow water (F4, F6)EMU39891Cruising in shallow waterWARNINGEWM02391● Operate the boat at the lowest possiblespeed when cruising
Operation692. Slightly tilt the outboard motor up, andthen slowly tilt the outboard motor downwhile pulling the tilt support bar up.EMU35391Cruising i
Maintenance70EMU43015Transporting and storing out-board motorWARNINGEWM02620● USE CARE when transporting fuel tank,whether in a boat or car.● DO NOT f
Maintenance71TIP:Place a towel or something similar under theoutboard motor to protect it from damage.F4, F6WARNINGEWM02300Do not hold the top cowling
Maintenance727. Turn the tiller handle 180° so that it ispointing rearward.8. Loosen the clamp screws.9. Hold the carrying handle and the hand-grip on
Maintenance73EMU43661Storing outboard motorWhen storing your Yamaha outboard motorfor prolonged periods of time (2 months orlonger), several important
Safety information2EMU33780ModificationsDo not attempt to modify this outboard motor.Modifications to your outboard motor may re-duce safety and relia
Maintenance74TIP:The use of “Yamaha Fuel Conditioner andStabilizer” eliminates the need to drain thefuel system. Consult your Yamaha dealer orother qu
Maintenance754. Remove the top cowling and fogging holecap.5. Remove the propeller. For further infor-mation, see page 89.6. Install the outboard moto
Maintenance76EMU39637Flushing with the water flush plug (option-al) (F4, F6)NOTICEECM00301Before starting the engine, make sure tosupply water to the
Maintenance778. Turn on the water supply to the outboardmotor.9. Start the engine, operate it for 10–15 min-utes at engine idle speed. WARNING!Do not
Maintenance782. Drain the cooling water completely out ofthe outboard motor. Clean the body thor-oughly.EMU28461Checking painted surface of outboard m
Maintenance79nance will often pay off many times over in in-creased engine life and greater ownersatisfaction. Consult your Yamaha dealer foradditiona
Maintenance80Fuel lineInspection or replace-ment as necessaryFuel pump (F4, F6)Inspection or replace-ment as necessaryFuel/engine oil leakage Inspecti
Maintenance81EMU34451Maintenance chart 2EMU28943GreasingYamaha grease A (water resistant grease)Yamaha grease D (corrosion resistant grease; for prope
Maintenance82F4, F6ZMU06764U6BV37E0.book Page 82 Wednesday, May 1, 2013 8:56 AM
Maintenance83EMU39293Cleaning and adjusting spark plugThe spark plug is an important engine compo-nent. The condition of the spark plug can indi-cate
Safety information3● Avoid areas with submerged objects orshallow water.● Ride within your limits and avoid aggressivemaneuvers to reduce the risk of
Maintenance84TIP:If a torque-wrench is not available when youare fitting a spark plug, a good estimate of thecorrect torque is 1/4 to 1/2 a turn past
Maintenance852. Prepare a suitable container that holds alarger amount than the engine oil capaci-ty. Loosen and remove the drain screwand gasket whil
Maintenance866. Dispose of used oil according to localregulations.TIP:● For more information on the disposal ofused oil, consult your Yamaha dealer.●
Maintenance87TIP:The oil lubrication check window does not in-dicate the engine oil level. Use the oil lubrica-tion check window to make sure that the
Maintenance88oil level is not at the proper level, add orextract oil until the oil is between the up-per and lower marks.15. Start the engine and make
Maintenance89EMU30662Removing propellerEMU39310Spline models1. Straighten the cotter pin and pull it out us-ing a pair of pliers.2. Remove the propell
Maintenance90TIP:If the propeller nut hole does not align with thepropeller shaft hole after tightening the pro-peller nut, tighten the nut further or
Maintenance91F2.5F4, F66. Put a new gasket on the oil level plug.When the oil begins to flow out of the oillevel plug hole, insert and tighten the oil
Trouble Recovery92EMU44021TroubleshootingThis section describes the likely causes andremedies for problems, such as those in thefuel, compression, and
Trouble Recovery93A. Open air vent valve.Q. Is choke knob pulled out?A. Return to home position.Q. Is carburetor clogged?A. Have serviced by a Yamaha
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