Yamaha F115C Owner's Manual

Printed in JapanMarch 2003-1.3 × 1 !68V-28199-14(F115AET, FL115AET)(E)Printed on recycled paperF115CLF115COWNER’S MANUALU.S.A.EditionLIT-18626-05-4168

E1-58 When a swimmer is in the water nearyou shift into neutral and shut off theengine.8 Be informed about boating safety.Additional publications and

EEMU00416TEMPORARY ACTION INEMERGENCYEMU01492IMPACT DAMAGEwThe outboard motor can be seriouslydamaged by a collision while operatingor trailering. Dam

E5-6411025qEMU00419POWER TRIM/TILT WILL NOTOPERATEIf the engine cannot be tilted up or downwith the power trim and tilt because of adischarged battery

E5-7EMU00424STARTER WILL NOT OPERATEIf the starter mechanism does not operate(engine cannot be cranked with thestarter), the engine can be manually st

E5-8000364000316ON STARTOFF7010240003174) Prepare the engine for starting. See“STARTING ENGINE” for procedures.Be sure the engine is in Neutral andtha

E5-9EMU00446TREATMENT OF SUBMERGEDMOTORIf the outboard motor is submerged,immediately take it a Yamaha dealer.Otherwise, some corrosion may beginalmos

EEMU00450Chapter 6INDEXINDEX...6-1123456 68V-9-14-6 2/20/03 14:10 Page 1

EEMU00451INDEXAAdjusting trim angle...3-15BBasic boating rules ...1-7Battery care...

E6-2NNeutral interlock trigger ...2-3Neutral throttle lever ...2-3OOperations of controls and other

EMU01599IMPORTANT WARRANTY INFORMATION FOR U.S.A. ANDCANADAWelcome to the Yamaha Family!Congratulations on the purchase of your new Yamaha marine powe

5. Your warranty applies specifically to repairs made in the country of purchase. If yourU.S.-purchased Yamaha needs warranty service while in Canada,

E1-6qw000321EMU00014IMPORTANT LABELSWARNING LABELS12 (LF115TR)WARNING8Be sure shift control is in neutral before starting engine. (except 2HP)8Do no

EMU01404YAMAHA MOTOR CORPORATION, U.S.A.FOUR-STROKE OUTBOARD MOTORTHREE-YEAR LIMITED WARRANTYYamaha Motor Corporation, U.S.A. hereby warrants that new

SPECIFIC PARTS EXCLUDED FROM WARRANTY. Parts replaced due to normal wear or routine maintenance such as oil, spark plugs,shear pins, propellers, hubs,

CUSTOMER SERVICEIf your machine requires warranty service, you must take it to any authorized Yamaha outboard dealer within the continental UnitedStat

EMU01178IMPORTANT WARRANTY INFORMATIONIF YOU USE YOUR YAMAHA OUTSIDE U.S.A. OR CANADAWelcome to the Yamaha Family!Congratulations on the purchase of y

Printed in JapanMarch 2003-1.3 × 1 !68V-28199-14(F115AET, FL115AET)(E)Printed on recycled paperF115CLF115COWNER’S MANUALU.S.A.EditionLIT-18626-05-4168

YAMAHA MOTOR CO., LTD.MADE IN JAPANPAYS D'ORIGINE JAPONOUTBOARD MOTOR WARRANTY REGISTRATIONENREGISTREMENT DE LA GARANTIE DU MOTEUR HORS-BORDPleas

PLACEPOSTAGEHEREATTN: WARRANTY DEPARTMENTWarranty card 2/27/02 11:47 AM Page 2

E1-7Stand-on vesselThe vessel with the right-of-way has theduty to continue its course and speed,except to avoid an immediate collision.When you maint

E1-8keep the other vessel on your port (left)side. This rule doesn’t apply if both of youwill clear one another if you continue onyour set course and

E1-91. When the sailing vessel is overtakingthe power-driven vessel, the power-driven vessel has the right-of-way.2. Sailing vessels should keep clear

E1-1011A11Proceeding toward headof navigation from seawardCAN BUOYOdd number. Leave to port.ORSECONDARY CHANNEL BUOYSSTARTS NEW NUMBERING SYSTEMold

E1-11EMU00016FUELING INSTRUCTIONSwGASOLINE AND ITS VAPORS ARE HIGH-LY FLAMMABLE AND EXPLOSIVE!8 Do not smoke when refueling, andkeep away from sparks,

E1-12EMU00027GasoholThere are two types of gasohol: gasoholcontaining ethanol and that containingmethanol. Gasohol containing ethanolcan be used if et

E1-13cCAll 4-stroke engines are shipped from thefactory without engine oil.EMU01775BATTERY REQUIREMENTcCDo not use a battery that does not meetthe spe

E1-14EMU01395PROPELLER SELECTIONThe performance of your outboard motorwill be critically affected by your choice ofpropeller, as an incorrect choice c

68V-9-14 Hyoshi 2/20/03 13:16 Page 2

E1-15NOTE:At full throttle and under a maximumboat load, the engine’s rpm should bewithin the upper half of the full throttleoperating range, as liste

EEMU00037Chapter 2BASIC COMPONENTSMAIN COMPONENTS...2-1OPERATIONS OF CONTROLS ANDOTHER FUNCTIONS ...

TRIP TIME BATTKm/hknotmphkmmileSPEEDYAMAHAsetmodeqwertyuiowYAMAHAsetmodeP SmpgKm/LgphI/hECON SYNCTTLFUEL MANAGEMENT!0!1!2!3!4!5 !6E2-1EMU01206MAIN COM

E2-2EMU00039OPERATIONS OF CONTROLSANDOTHER FUNCTIONSEMU01273REMOTE CONTROLBoth the shifter and the throttle are actu-ated by the remote control lever.

E2-3RNFqwertyuutry701031702032qwerrttyyuu000323N000324qwEMU00098Remote Control LeverMoving the lever forward from theNeutral position engages Forward

E2-4ONSTARTOFF701021ONSTARTOFFONSTARTOFF000325000569qwONSTARTOFFONSTARTOFFqw000715EMU00101Main switchThe main switch controls the ignition sys-tem; it

E2-5NOTE:The engine cannot be started with thelock-plate removed.UPDN701034UPDNDNUP000328EMU01112Power Trim/Tilt SwitchesThe power trim/tilt adjusts t

E2-670204335°qwe701035702035EMU00106Free AcceleratorTo open the throttle without shifting intoeither Forward or Reverse, push the freeaccelerator butt

E2-7qwe603014AB603012EMU00113TRIM TABThe trim tab should be adjusted so thatthe steering control can be turned toeither the right or left by applying

E2-8UPDOWN000302EMU01125POWER TRIM/TILT SWITCHThe power trim/tilt adjusts the motorangle in relation to the transom. Thepower trim/tilt switch is loca

EThank you for choosing a Yamaha outboardmotor. This Owner’s manual contains infor-mation needed for proper operation, mainte-nance and care. A thorou

E2-9qtwr001081eyu001085001058EMU01617DIGITAL TACHOMETERThis gauge contains the tachometer, trimmeter, hour meter, low oil pressure warn-ing indicator,

E2-10001059EMU01109Trim MeterThis meter shows the trim angle of youroutboard motor.NOTE:8 Memorize the trim angles that workbest for your boat under d

E2-11001060q001061qEMU01110Low Oil Pressure Warning IndicatorIf oil pressure drops too low, the warningindicator will start to blink. Refer to thesect

E2-12000329TRIP TIME BATTKm/hknotmphkmmileSPEEDYAMAHAsetmodeqwerqwe000330802034TRIP TIME BATTKm/hknotmphkmmileSPEEDYAMAHAsetmodeEMU00140DIGITAL SPEEDO

E2-13000331TRIP TIME BATTKm/hknotmphkmmileSPEEDYAMAHAsetmode000332TRIP TIME BATTKm/hknotmphkmmileSPEEDYAMAHAsetmodeEMU01274Trip MeterThis meter displa

E2-14802032TRIP TIME BATTKm/hknotmphkmmileSPEED802031TRIP TIME BATTKm/hknotmphkmmileSPEEDYAMAHAsetmodeqwEMU00144Fuel meterThe fuel level is displayed

E2-15YAMAHAsetmodeP SmpgKm/LgphI/hECON SYNCTTLFUEL MANAGEMENTqwe000333P SmpgKm/LgphI/hECON SYNCTTLFUEL MANAGEMENT000334YAMAHAP SgphI/hECON SYNCTTLFUEL

E2-16NOTE:8 The meter displays gallon/hour and literdepending upon operator preference.Select the desired unit of measurementby setting the selector s

E2-17NOTE:8 Fuel consumption varies greatly withboat design, weight, propeller used,engine trim angle, sea conditions(including wind), and throttle po

E2-18P SmpgKm/LgphI/hECON SYNCTTLFUEL MANAGEMENT000339P SmpgKm/LgphI/hECON SYNCTTLFUEL MANAGEMENTqwert000340P SmpgKm/LgphI/hECON SYNCTTLFUEL MANAGEMEN

ECONTENTSGENERAL INFORMATIONBASIC COMPONENTSOPERATIONMAINTENANCETROUBLE RECOVERYINDEX123456READ THIS OWNER’S MANUAL CAREFULLYBEFORE OPERATING YOUR OUT

E2-19000342000343000365qEMU00163TOP COWLING LOCK LEVERSTo remove the engine top cowling, pullup the front and rear lock levers. Then liftoff the cowli

E2-20001132701054703026OFF START OFF STARTON ON605015EMU00169WARNING SYSTEMcCDo not continue to operate the engine ifthe warning device has activated.

E2-21001133701054703026OFF START OFF STARTON ONEMU00173*LOW OIL PRESSURE WARNINGIf oil pressure drops too low, the warningdevice will activate.(4); In

EEMU00174Chapter 3OPERATIONINSTALLATION ...3-1Mounting the outboard motor...3-2BREAKING IN (RUNNING IN)

E3-1000366EMU00175INSTALLATIONcCIncorrect engine height or obstructions tosmooth water flow (such as the design orcondition of the boat or accessories

E3-2104011q000371EMU00176MOUNTING THE OUTBOARDMOTORwImproper mounting of the outboardmotor could result in hazardous condi-tions such as poor handling

E3-3wOverpowering a boat may cause severeinstability. Do not install an outboardmotor with more horsepower than themaximum rating on the capacity plat

E3-4EMU00224BREAKING IN (RUNNING IN)ENGINEYour new engine requires a period ofbreak-in (running-in) to allow mating sur-faces of moving parts to wear-

E3-5EMU00204PRE-OPERATION CHECKSwIf any item in the pre-operation check isnot working properly, have it inspectedand repaired before operating the out

E3-6000303q201012*qweEMU00209Controls8 Check throttle, shift, and steering forproper operation before starting theengine.8 The controls should work sm

EEMU00004Chapter 1GENERALINFORMATIONIDENTIFICATION NUMBERS RECORD ...1-1Outboard motor serial number.

E3-7EMU01031FILLING FUEL1) Remove the fuel tank cap.2) Fill the fuel tank carefully.3) Close the cap securely after refueling.Wipe up any spilled fuel

E3-8EMU01197STARTING ENGINEw8 Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of any obstructions.Be

E3-9N701015N702025000293ONSTARTOFFONSTARTOFF000714EMU00248PROCEDURE FOR REMOTECONTROL MODEL4) Place the remote control lever in theNeutral position.NO

E3-10ONSTARTOFF701022703045OFF STARTON6) Turn the main switch to “ON”.NOTE:In case of dual-engine operation, whenthe main switch is turned on, the buz

E3-11000348EMU01026WARMING UP ENGINE1) Before beginning operation, allow theengine to warm up at idling speed for3 minutes. (Failure to do this willsh

E3-12701043NFNF702015NR701044NR702016EMU00261SHIFTINGwBefore shifting, make sure there are noswimmers or obstacles in the water nearyou.cCTo change th

E3-13ONSTARTOFF701023OFFOFFONON703046EMU00273STOPPING ENGINELet it cool off for a few minutes at idle orlow speed first. Stopping the engineimmediatel

E3-14000349qEMU01412TRIMMING OUTBOARDMOTORThe trim angle of the outboard motorhelps determine the position of the bowof the boat in the water. The cor

E3-15ADJUSTING TRIM ANGLEEMU01401Power Trim/Tilt Modelw8 Be sure all people are clear of the out-board motor when adjusting thetrim/tilt angle, also b

E3-16001672q001673w001674eEMU19160Trim angle settings and boat handlingWhen the boat is on plane, a bow-up atti-tude results in less drag, greater sta

1-1EEMU00005IDENTIFICATION NUMBERSRECORDEMU00007OUTBOARD MOTOR SERIALNUMBERThe outboard motor serial number isstamped on the label attached to the por

E3-17000352EMU01200TILTING UP/DOWNIf the engine will be stopped for sometime, or if the boat is moored in shallows,the engine should be tilted up to p

E3-18UPDNUPDNDNUP403033411043EMU01201PROCEDURE FOR TILTING UPPower trim/tilt model1) If there is a fuel joint or a fuel cock onthe boat, disconnect th

E3-19411021EMU00303PROCEDURE FOR TILTING DOWNPower trim/tilt model1) Push the power trim/tilt switch “UP”until the engine is supported by thetilt rod.

EEMU00317Chapter 4MAINTENANCESPECIFICATIONS ...4-1TRANSPORTING AND STORING OUTBOARD MOTOR ...

E4-1EMU00322*SPECIFICATIONSModelUnit F115TRCItem25 (2.5, 18)55 (5.5, 40)27 (2.7, 20)18 (1.8, 13)8Spark plug8Propeller nut8Engine oil drain bolt8Engine

E4-2LF115TRC — —4-stroke, DOHC, L41,741 (106.24)79.0 × 88.8 (3.11 × 3.50)TCILFR6A-111.0 ~ 1.1 (0.039 ~ 0.043)Remote controlElectric start0.17 ~ 0.23 (

E4-3EMU01369TRANSPORTING AND STORING OUTBOARD MOTORwLeaking fuel is a fire hazard. When trans-porting and storing the outboard motor,close the air ven

E4-4EMU01782STORING OUTBOARD MOTORWhen storing your Yamaha outboardmotor for prolonged periods of time (2months or longer), several important pro-cedu

E4-5EMU00335Filling Fuel TankFill the fuel tank with fresh fuel and addone ounce of “Yamaha Fuel Conditionerand Stabilizer” (Part No. LUB-FUELC-12-00)

E4-63) Run the engine at a fast idle for 10~15minutes supplying fresh water.4) Just prior to turning off the engine,quickly spray “Yamaha Stor-RiteEng

1-2E000320qwEMU01385EMISSION CONTROLINFORMATIONEMU01387NORTH AMERICAN MODELSThis engine conforms to U.S.Environmental Protection Agency (EPA)regulatio

E4-7EMU00352Cleaning and Anti-corrosion Measure1) Wash down the exterior of the out-board with fresh water and dry offcompletely.2) Spray the engine’s

E4-8Batteries vary among manufacturers.Therefore the following procedures maynot always apply. Consult your batterymanufacturer’s instructions.1) Disc

E4-9EMU01569PERIODIC MAINTENANCEwBe sure to turn off the engine when youperform maintenance unless otherwisespecified. If the owner is not familiar wi

E4-10EMU19401MAINTENANCE CHARTFrequency of maintenance operations may be adjusted according to the operating con-ditions, but the following table give

E4-11EMU00366GREASINGYamaha marine grease(Water resistant grease)000354500 hours 1000 hours(2.5 years) (5 years)Timing belt Replacement1Valve clearanc

E4-12EMU01035CLEANING AND ADJUSTING SPARKPLUGwWhen removing or installing a spark plug,be careful not to damage the insulator. Adamaged insulator coul

E4-13When fitting the plug, always clean thegasket surface and use a new gasket.Wipe off any dirt from the threads andscrew in the spark plug to the c

E4-14000307EMU00369CHECKING FUEL SYSTEMwGasoline (petrol) and its vapors are highlyflammable and explosive. Keep awayfrom sparks, cigarettes, flames o

E4-15000308000309qewrtEMU00370INSPECTING FUEL FILTERwGasoline (petrol) is highly flammable, andits vapors are flammable and explosive.8 If you have an

E4-16EMU01415CHANGING ENGINE OILw8 Avoid draining the engine oil immedi-ately after stopping the engine. The oilis hot and should be handled with care

E1-3EMU01389STAR LABELSYour outboard motor is labeled with aCalifornia Air Resources Board (CARB)star label. See below for a description ofyour partic

E4-173) Put a new gasket on the drain bolt.Apply a light coat of oil to the gasketand reinstall the drain bolt.NOTE:If a torque wrench is not availabl

E4-182010126) Turn off the engine and wait 3 min-utes. Recheck the oil level using thedipstick to be sure the level fallsbetween the upper and lower m

E4-19413016EMU00383CHECKING WIRING ANDCONNECTORS1) Check that each grounding wire isproperly secured.2) Check that each connector is engagedsecurely.E

E4-20411046qw411044e4110451) Check the power trim and tilt unit forany sign of oil leaks.2) Operate each of the power trim andtilt switches on remote

E4-21000368000369602051602036EMU01039CHECKING PROPELLER1) Remove the 5 screws and the cover.2) Remove the spark plug caps from thespark plugs.wYou cou

E4-22EMU00976Removing the Propeller1) Straighten the cotter-pin 1 and pull itout using a pair of pliers.2) Remove the propeller nut 2, washer3 and spa

E4-23000565wqEMU01460CHANGING GEAR OILw8 Be sure the outboard is securely fas-tened to the transom or a stable stand.You could be severely injured if

E4-245) With the outboard motor in a verticalposition, and using a flexible or pres-surized filling device, inject the gearoil into the oil drain plug

E4-25603024405022EMU14622INSPECTING AND REPLACINGANODE(S)Yamaha outboard motors are protectedfrom corrosion by sacrificial anodes.Inspect the external

E4-26EMU04041CHECKING BATTERY (for Electricstart models)wBattery electrolytic fluid is dangerous; itcontains sulfuric acid and therefore is poi-sonous

E1-4EMU00917SAFETY INFORMATION8 Before mounting or operating the out-board motor, read this entire manual.Reading it should give you an under-standing

E4-27cC8 A poorly maintained battery will quick-ly deteriorate.8 Ordinary tap-water contains mineralsharmful to a battery, and should not beused for t

E4-28cC8 Make sure the main switch (on applica-ble models) is “OFF” before working onthe battery.8 Reversal of the battery leads will dam-age the rect

E4-29EMU01172CLEANING COOLING-WATERPASSAGESFlushing device equipped modelPerform this procedure right after opera-tion for the most thorough flushing.

E4-30000362000363EMU00413COATING THE BOAT BOTTOMA clean hull improves boat performance.The boat bottom should be kept as cleanof marine growths as pos

E– MEMO – 68V-9-14-4 3/11/03 19:35 Page 32

EEMU00414Chapter 5TROUBLE RECOVERYTROUBLESHOOTING ...5-1TEMPORARY ACTION IN EMERGENCY ...

E5-1EMU01204¯TROUBLESHOOTINGA problem in the fuel, compression, or ignition systems can cause poor starting, loss ofpower, or other problems. The trou

E5-2C. Engine idlesirregularly or stalls.Trouble Possible Cause Remedy1. Spark plug(s) fouled or incorrecttype.2. Fuel system obstructed.3. Fuel conta

E5-3D. Warning buzzersounds orindicator lamplights.Trouble Possible Cause Remedy1. Cooling system clogged.2. Engine oil level low.3. Heat range of spa

E5-4Trouble Possible Cause Remedy13. Poor connections or damagedignition wiring.14. Failed ignition parts.15. Specified engine oil not used.16. Thermo