Yamaha 15B Owner's Manual

9.9B15BOWNER’S MANUALU.S.A.EditionLIT-18626-04-89 63V-9-15 hyoshi 4/10/02 1:23 PM Page 1 (2,1)

1-3E8 This product emits exhaust gases whichcontain carbon monoxide, a colorless,odorless gas which may cause braindamage or death when inh

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

1-4E8 Be informed about boating safety. Addi-tional publications and information canbe obtained from many organizations,including the following:

1-5EEMB30010IMPORTANT LABELSWARNING LABELS12202012*qwWARNINGThis engine is equipped with a neutral starting device. The engine will not start unless t

1-6EStand-on VesselThe vessel with the right-of-way has theduty to continue its course and speed,except to avoid an immediate collisi

1-7Eside. This rule doesn’t apply if both of youwill clear one another if you continue onyour set course and speed.CrossingWhen two power dri

1-8E1. When the sailing vessel is overtakingthe power-driven vessel, the power-driven vessel has the right-of-way.2. Sailing vessels should k

1-9ERemember, markings may vary by geo-graphic location. Always consult localboating authorities before driving yourboat in unfamiliar wa

1-10EEMU00016FUELING INSTRUCTIONSwGASOLINE AND ITS VAPORS ARE HIGH-LY FLAMMABLE AND EXPLOSIVE!8 Do not smoke when refueling, andkeep away fr

1-11EEMU00027GasoholThere are two types of gasohol: gasoholcontaining ethanol and that containingmethanol. Gasohol containing ethanolcan

1-12EEMU01395PROPELLER SELECTIONThe performance of your outboard motorwill be critically affected by your choice ofpropeller, as an incorrect choi

63V-9-15 hyoshi 4/10/02 1:23 PM Page 2 (1,1)

1-13ENOTE:At full throttle and under a maximumboat load, the engine’s rpm should bewithin the upper half of the full throttleoperat

EMC00010Chapter 2BASIC COMPONENTSMAIN COMPONENTS...2-1OPERATIONS OF CONTROLS ANDOTHER FUNCTIONS ...

2-1E101022*902063902051*!9!8101232!2!1!3!5!4!6uoyi!0t!7qwerEMU01206MAIN COMPONENTS1 Top cowling2 Cowling lock lever3 Cooling water pilot hole4 Tilt lo

2-2Eqwr902051eEMC20010OPERATIONS OF CONTROLSAND OTHER FUNCTIONSEMC21012FUEL TANKIf your model was equipped with aportable fuel tank, its fun

2-3EEMC27011ENGINE STOP BUTTON (for Tillercontrol model)Pushing this button opens the ignition cir-cuit and stops the engine.407021*407021qwEMU00931EN

2-4EEMC40010THROTTLE CONTROL GRIP(for Tiller control model)The throttle control grip is on the tillerhandle. Turn the grip counterclockwise toi

2-5E503015502011EMC60010TILLER HANDLE(for Tiller control model)Moving the tiller handle sideways toadjust the steering direction.EMC64010Throttle

2-6E408011404013**EMD00010STEERING FRICTION ADJUSTMENT(for Tiller control model)A friction device provides resistance tosteering movement. This i

EMD68010*CARRYING HANDLEThe carrying handle is included betweenthe clamp bracket. The carrying handleenables you to carry the outboard

EMF00010Chapter 3OPERATIONINSTALLATION ...3-1Mounting the outboard motor...3-2Clamping the outboard moto

Thank you for choosing a Yamaha out-board motor. This Owner’s manual con-tains information needed for proper oper-ation, maintenance and

3-1EEMF10010INSTALLATIONcCIncorrect engine height or obstructions tosmooth water flow (such as the design orcondition of the boat or accessories sucha

3-2EEMU00176MOUNTING THE OUTBOARDMOTORwImproper mounting of the outboardmotor could result in hazardous condi-tions such as poor handling,

3-3EwOverpowering a boat may cause severeinstability. Do not install an outboardmotor with more horsepower than themaximum rating on th

3-4EEMF14010CLAMPING THE OUTBOARDMOTOR1) Place the outboard on the transom sothat it is positioned as close to thecenter as possible. Tighte

3-5EFILLING FUELAND ENGINE OILEMF30010FILLING FUEL1) Remove the fuel tank cap.2) Fill the fuel tank carefully.3) Close the cap securely after refuelin

3-6EEMF35010GASOLINE (PETROL) AND OIL MIXINGPre-mix model1) Pour oil and gasoline into the fueltank, in that order.1 Oil2 Gasoline (Petrol)2) Th

3-7ENOTE:If using a permanently installed tank, pourthe oil gradually as the fuel is beingadded to the tank.Mixing ratio100 : 1Gasoline (Petrol

3-8EEMF43010Controls8 Check throttle, shift, and steering forproper operation before starting theengine.8 The controls should work smooth

3-9EEMU00226Run the engine under load (in gear with apropeller installed) as follows.1) First 10 minutes:Run the engine at the lowest possi-ble-

3-10EEMU01147STARTING ENGINEw8 Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of any obstructio

63V-9-15-1 3/4/02 9:51 AM Page 2

3-11EEMU01497PROCEDURE FOR TILLER CONTROLMODEL4) Place the gear-shift lever in the neu-tral position.NOTE:The start-in-gear protection device

3-12EEMU00241*Manual Start Model7) Pull out the choke knob completelywhen the engine is cold. After theengine starts, set the choke kn

EMG00010-*WARMING UP ENGINE1) Before beginning operation, allow theengine to warm up at idling speed for3 minutes. (Failure to do this willshort

3-14EEMG20111SHIFTINGwBefore shifting, make sure there are noswimmers or obstacles in the water nearyou.cCTo change the shifting position from

3-15EEMG33210REVERSEwWhen operating in Reverse, go slowly. Donot open the throttle more than half. Oth-erwise, the boat may become unstable,which

3-16EEMG38010STOPPING ENGINELet it cool off for a few minutes at idle orlow speed first. Stopping the engineimmediately after operating at high s

EMU01412TRIMMING OUTBOARDMOTORThe trim angle of the outboard motorhelps determine the position of the bowof the boat in the water. The

3-18EEMU00951Manual tilt modelThere are 4 or 5 holes provided in theclamp bracket to adjust the outboardmotor trim angle.1) Stop the engi

EMG62010Bow upWhen the boat is on plane, a bow-up atti-tude result in less drag, greater stabilityand efficiency. This is generally when thekeel

3-20EEMG70011CRUISING IN SHALLOWWATERThe outboard motor can be tilted up par-tially to allow operation in shallow water.w8 Place the gear shift in t

GENERAL INFORMATIONBASIC COMPONENTSOPERATIONMAINTENANCETROUBLE RECOVERYINDEXCONTENTSREAD THIS OWNER’S MANUAL CAREFULLYBEFORE OPERATING YOUR OUTBOARD M

3-21EEMG71210PROCEDURE1) Place the gear shift lever in the neu-tral position.2) Pull up the tilt lock lever.3) Slightly tilt up the engine.

3-22EEMH10110TILTING UP/DOWNIf the engine will be stopped for sometime, or if the boat is moored in shallows,the engine should be tilted u

3-23EEMU00290PROCEDURE FOR TILTING UP1) Place the gear shift lever in Neutral.2) Remove the fuel line connection fromthe motor.3) Place the tilt loc

3-24EEMH60010CRUISING IN OTHER CONDITIONSCRUISING IN SALT WATERAfter operating in salt water, wash out thecooling-water passages with fresh watert

E-MEMO- 63V-9-15-3 3/4/02 9:54 AM Page 26

EMK00010Chapter 4MAINTENANCESPECIFICATION DATA...4-1TRANSPORTING AND STORINGOUTBOARD MOTOR ...4-

4-1EEMR50302*SPECIFICATION DATA25 (2.5, 18)17 (1.7, 12)8Spark plug N•m (kgf•m, lb•ft)8Propeller nut N•m (kgf•m, lb•ft)ModelUnit 9.9MSHBItemDIMENSIONSP

4-2E15MSHB — —873 (34.4)1,040 (40.9)332 (13.1)440 (17.3)36 (79)4,500~5,50011.0 (15) at 5,000 r/min.700~8002-stroke, L2246 (15.01)56 × 50 (2.20 × 1.97)

4-3ETRAILERING OUTBOARD MOTORThe motor should be trailered and storedin the normal running position. If there isinsufficient road clearance in this po

4-4E102015q102013wEMK22010**STORING OUTBOARD MOTORWhen storing your Yamaha outboard forprolonged periods of time, (2 months orlonger), sev

63V-9-15-1 3/4/02 9:51 AM Page 4

4-5EEMU00338*Flushing Cooling System and FoggingEngineCooling system flushing is essential toprevent the cooling system from cloggingup with

4-6EEMK26010Lubrication1) Remove the spark plugs, and spray a10 second spray of Yamaha Stor-RiteEngine Fogging Oil into each cylinder.Grease the

4-7EEMU01569PERIODIC MAINTENANCEwBe sure to turn off the engine when youperform maintenance unless otherwisespecified. If the owner is not fa

4-8EMAINTENANCE CHARTFrequency of maintenance operations may be adjusted according to the operating con-ditions, but the following table gives general

4-9EEMU01202CLEANING AND ADJUSTING SPARKPLUGwWhen removing or installing a spark plug,be careful not to damage the insulator. Adamaged insulator cou

4-10EWhen fitting the plug, always clean thegasket surface and use a new gasket.Wipe off any dirt from the threads andscrew in th

4-11EEMK38010CHECKING FUEL SYSTEMwGasoline (petrol) and its vapors are highlyflammable and explosive. Keep awayfrom sparks, cigarettes, flames

4-12EEMU00370INSPECTING FUEL FILTERwGasoline (petrol) is highly flammable, andits vapors are flammable and explosive.8 If you have any question about

EMU00991ADJUSTING IDLING SPEEDw8 Do not touch or remove electrical partswhen starting or during operation.8 Keep hands, hair and clothes awayfrom

4-14EEMK78010CHECKING WIRING ANDCONNECTORS1) Check that each grounding wire isproperly secured.2) Check that each connector is engagedsecurely.EX

E23456EMB00010Chapter 1GENERAL INFORMATIONIDENTIFICATION NUMBERSRECORD ...1-1Outboard motor serial nu

E4-15EMU00366GREASINGYamaha marine grease(Water resistant grease)103011 63V-9-15-4 3/4/02 10:00 AM Page 16

E4-16EMU00388CHECKING PROPELLERwYou could be seriously injured if theengine accidentally starts while you arenear the propeller.8 Before i

EMU00396Installing the PropellercC8 Be sure to install the thrust washerbefore installing the propeller, other-wise the lower case and prope

4-18EEMU01773CHANGING GEAR OILw8 Be sure the outboard motor is securelyfastened to the transom or a stablestand. You could be severely inju

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

4-20ETo clean the fuel tank:1) Empty the fuel tank into an approvedgasoline container.2) Pour a small amount of suitable sol-vent in the tank. R

4-21EEMU00409MOTOR EXTERIOREMU00410Cleaning the Outboard MotorAfter use, wash the exterior of the out-board with fresh water.Flush the coolin

EMN00010Chapter 5TROUBLE RECOVERYTROUBLESHOOTING ...5-1TEMPORARY ACTION INEMERGENCY ...

5-1EEMU01204¯TROUBLESHOOTINGA problem in the fuel, compression, or ignition systems can cause poor starting, loss ofpower, or other problems. The trou

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

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

5-3ETrouble Possible Cause Remedy1. Propeller damaged.2. Propeller pitch or diameter incorrect.3. Trim angle incorrect.4. Motor mounted at incorrect h

E5-4Trouble Possible Cause RemedyD. Engine vibratesexcessively.1. Propeller damaged.2. Propeller shaft damaged.3. Weeds or other foreign mattertangled

E5-5EMN20010TEMPORARY ACTION INEMERGENCY607011EMU01492IMPACT DAMAGEwThe outboard motor can be seriouslydamaged by a collision while operatin

E5-6EMN30110STARTER WILL NOT OPERATEIf the starter mechanism does not operate(engine cannot be cranked with thestarter), the engine can be starte

E5-7208014EMR000014) To start the engine with emergencystarter rope, insert the knotted end ofthe rope into the notch in the flywheelrotor and wi

5-8EEMN50011TREATMENT OF SUBMERGEDMOTORIf the outboard motor is submerged,immediately take it a Yamaha dealer. Oth-erwise, some corrosion may beg

E-MEMO- 63V-9-15-5 3/4/02 10:38 AM Page 10

EMP00010Chapter 6INDEXINDEX...6-1E123456 63V-9-15-6 3/4/02 10:41 AM Page 1

6-1EEMP10010INDEXAAdjusting idling speed ...4-13Adjusting trim angle...3-18Air vent screw...

6-2ERRecoil starter handle...2-4Removing the propeller ...4-17Replacement parts...

1-2Eqw108015*EMU01385EMISSION CONTROLINFORMATIONEMU01386NORTH AMERICAN MODELSThis engine conforms to U.S. Environ-mental Protection Agency (EP

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 whi

EMU00912*YAMAHA MOTOR CORPORATION, U.S.A.OUTBOARD MOTOR TWO YEAR LIMITED WARRANTYYamaha Motor Corporation, U.S.A. is proud of its heritage and

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

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

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

63V-9-15-6 3/4/02 10:41 AM Page 10

63V-9-15 hyoshi 4/10/02 1:23 PM Page 2 (2,1)

Printed in JapanMarch 2002-0.5 × 1 !63V-28199-15(9.9FMH, 15FMH)(E)Printed on recycled paperOWN 63V-9-15 hyoshi 4/10/02 1:23 PM Page 1 (1,1)

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