Yamaha F6B Owner's Manual

OWNER’S MANUALF6BF8BT8BLIT-18626-05-03U.S.A.EditionMarch 2002–1.0 × 1 CRPrinted in Japan68T-28199-14(F6AMH, F8CMH, FT8DEHP, FT8DWH, FT8DEP)(E)YAMAHA M

1-3EEMU01389STAR LABELSYour outboard motor is labeled with a Cali-fornia Air Resources Board (CARB) starlabel. See below for a description of yourpart

4-23EEMU00388 CHECKING PROPELLERWARNING@ You could be seriously injured if theengine accidentally starts while you arenear the propeller. ●Before insp

4-24EF6/F8T8EMU01504Removing the Propeller1) Straighten the cotter pin 1 and pull itout using a pair of pliers.2) Remove the propeller nut 2, washer 3

4-25EEMU01460CHANGING GEAR OIL WARNING@ ●Be sure the outboard is securely fas-tened to the transom or a stable stand.You could be severely injured if

4-26E5) With the outboard motor in a verticalposition, and using a flexible or pressur-ized filling device, inject the gear oil intothe oil drain plug

4-27EEMU01510CLEANING FUEL TANK WARNING@ Gasoline (petrol) is highly flammable,and its vapors are flammable and explo-sive. ●If you have any question

4-28EF6/F8T8T8EMU01462INSPECTING AND REPLACING ANODE(S) Yamaha outboard motors are protected fromcorrosion by sacrificial anodes. Check the anodes per

4-29EEMU00404CHECKING BATTERY (for Electric start model) WARNING@ Battery electrolytic fluid is dangerous; itcontains sulfuric acid and therefore ispo

4-30E1) Check the electrolyte level at least oncea month. Fill to the manufacturer’s rec-ommended level when necessary. Topup only with distilled wate

4-31EEMU01279¯Connecting the Battery WARNING@ Mount the battery holder securely in adry, well-ventilated, vibration-free loca-tion in the boat. Instal

4-32EEMU00408 CHECKING BOLTS AND NUTS1) Check that bolts securing the cylinderhead and engine and the nut securingthe flywheel are tightened with thei

1-4EEMU00917SAFETY INFORMATION●Before mounting or operating the out-board motor, read this entire manual.Reading it should give you an under-standing

4-33EEMU01172 CLEANING COOLING-WATER PASSAGES Flushing device equipped model Perform this procedure right after operationfor the most thorough flushin

4-34EEMU00409 MOTOR EXTERIOREMU00410 Cleaning the Outboard MotorAfter use, wash the exterior of the outboardwith fresh water. Flush the cooling system

4-35E-MEMO-U68T14.book Page 35 Monday, April 1, 2002 4:32 PM

E5EMU00414 Chapter 5TROUBLE RECOVERYTROUBLESHOOTING...5-1TEMPORARY ACTION IN EMERGENCY...

5-1EEMU01752¯TROUBLESHOOTING A problem in the fuel, compression, or ignition systems can cause poor starting, loss ofpower, or other problems. The tro

5-2EC. Engine idles irregularly or stalls.1. Spark plug(s) fouled or incorrect type. 1. Inspect spark plug(s). Clean or replacewith recommended type.2

5-3EE. Engine power loss.1. Propeller damaged. 1. Have propeller repaired or replaced.2. Propeller pitch or diameter incorrect. 2. Install correct pro

5-4EEMU00416 TEMPORARY ACTION IN EMERGENCYEMU01492 IMPACT DAMAGE WARNING@ The outboard motor can be seriouslydamaged by a collision while operatingor

5-5EEMU00423 STARTER WILL NOT OPERATEIf the starter mechanism does not operate(engine cannot be cranked with the starter),the engine can be started wi

5-6EEMU01513¯Emergency Starting Engine 1) Remove the top cowling. 2) Remove the start-in-gear protectioncable from the starter if equipped. 3) Remove

1-5E●When a swimmer is in the water near youshift into neutral and shut off the engine. ●Be informed about boating safety. Addi-tional publications an

5-7E5) Insert the knotted end of the emergencystarter rope into the notch in the fly-wheel rotor and wind the rope 1 or 2turns clockwise. 6) Give a st

5-8EEMU01363 ENGINE FAILS TO OPERATEIf the engine stops unexpectedly, or if theengine does not start, you may attempt touse the following emergency ci

5-9EEMU01511 TREATMENT OF SUBMERGED MOTOR If the outboard motor is submerged, immedi-ately take it a Yamaha dealer. Otherwise,some corrosion may begin

E6EMU00450Chapter 6INDEXINDEX...6-1U68T14.book Page 1 Monday, April 1, 2002 4:32 PM

6-1EEMU00451 INDEXAAdjusting idling speed... 4-17Adjusting trim angle ... 3-20Air

6-2EManufactured date label ... 1-2Meeting ... 1-8Motor exteri

EMU01599 IMPORTANT WARRANTY INFORMATION FOR U.S.A. AND CANADAWelcome to the Yamaha Family!Congratulations on the purchase of your new Yamaha marine po

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

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

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

1-6EEMU00014IMPORTANT LABELSWARNING LABELS12CAUTION LABELS3U68T14.book Page 6 Monday, April 1, 2002 4:32 PM

EMU01178 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE U.S.A. OR CANADAWelcome to the Yamaha Family!Congratulations on the purchase o

A5-shiro_tate.fm Page 1 Monday, May 28, 2001 12:03 PM

OWNER’S MANUALF6BF8BT8BLIT-18626-05-03U.S.A.EditionMarch 2002–1.0 × 1 CRPrinted in Japan68T-28199-14(F6AMH, F8CMH, FT8DEHP, FT8DWH, FT8DEP)(E)YAMAHA M

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

1-7EEMU00015 BASIC BOATING RULES (Rules of the road)Just as there are rules which apply whenyou are driving on streets and high ways,there are waterwa

1-8ERULES WHEN ENCOUNTERING VESSELSThere are three main situations which youmay encounter with other vessels whichcould lead to a collision unless the

1-9Eother vessel is expected to maintain itscourse and speed. You must stay out of itsway until you are clear of it. Likewise, ifanother vessel is pas

1-10ERemember, markings may vary by geo-graphic location. Always consult local boat-ing authorities before driving your boat inunfamiliar waters.U68T1

1-11EEMU00016 FUELING INSTRUCTIONSWARNING@ GASOLINE AND ITS VAPORS AREHIGHLY FLAMMABLE AND EXPLOSIVE! ●Do not smoke when refueling, andkeep away from

1-12EEMU01804 GASOLINE If knocking or pinging occurs, use a differentbrand of gasoline or premium unleaded fuel. EMU00027Gasohol There are two types

1-13EEMU01769 ENGINE OIL Recommended engine oil: 4-stroke motor oil with a combination of cor-responding SAE and API as shown in thechart. CAUTION:@

1-14EEMU01775 BATTERY REQUIREMENT CAUTION:@ Do not use a battery that does not meetthe specified capacity. If a battery whichdoes not meet specificat

1-15EEMU01395PROPELLER SELECTIONThe performance of your outboard motor willbe critically affected by your choice of pro-peller, as an incorrect choice

1-16E1Propeller diameter (in inches)2Propeller pitch (in inches)3Type of propeller (propeller mark)Refer to the section “CHECKING PROPEL-LER” for inst

1-17E-MEMO-U68T14.book Page 17 Monday, April 1, 2002 4:32 PM

2EEMU00037 Chapter 2BASIC COMPONENTSMAIN COMPONENTS...2-1OPERATIONS OF CONTROLS AND OTHER FUNCTIONS...

2-1EEMU01206 MAIN COMPONENTS1Top cowling2Top cowling lock lever3Anti-cavitation plate*4Propeller5Cooling water inlet6Oil drain bolt7Trim angle adjusti

2-2E1Top cowling2Top cowling lock lever3Anti-cavitation plate4Propeller5Cooling water inlet6Oil drain bolt7Trim angle adjusting rod8Clamp bracket*9Pow

2-3EEMU00039 OPERATIONS OF CONTROLS AND OTHER FUNCTIONSEMU01465FUEL TANKIf your model included a portable fuel tank,its parts and functions are as fol

2-4EEMU00057Tiller control modelCHOKE KNOB Pulling out this knob (setting it to ON) sup-plies a rich mixture required to start theengine.EMU00059 RECO

EEMU01449 TO THE OWNERThank you for choosing a Yamaha outboardmotor. This Owner’s manual contains infor-mation needed for proper operation, mainte-na

2-5EEMU01122¯MULTIFUNCTION TILLER HANDLE The tiller handle centralized most of func-tions for the outboard motor operation.1Tiller handle 2Gear shift

2-6EEMU00081Throttle control grip The throttle control grip is on the tiller han-dle. Turn the grip counterclockwise toincrease speed and clockwise to

2-7EEMU00933 Engine Stop Lanyard Switch The lock-plate 1 must be attached to theengine stop lanyard switch for the engine torun. The lanyard 2 should

2-8EEMU01323Power Tilt Switch The power tilt adjusts the motor angle inrelation to the transom. The power tilt switchis located on the tiller handle.

2-9EEMU00098Remote Control Lever Moving the lever forward from the Neutralposition engages Forward gear. Pulling thelever back from Neutral engages Re

2-10EEMU00100Neutral Throttle Lever To open the throttle without shifting intoeither Forward or Reverse, place the remotecontrol lever in the Neutral

2-11EEMU00102Choke Switch While the main switch is being pressed in at“ON” or “START”, the choke system willswitch on, to supply a rich mixture requir

2-12EEMU01316Power Tilt Switch The power tilt adjusts the motor angle inrelation to the transom. The power tilt switchis located on the remote control

2-13EEMU01295STEERING FRICTION ADJUSTING LEVERA friction device provides resistance tosteering movement. This is adjustableaccording to operator prefe

2-14EEMU01501¯POWER TILT SWITCHThe power tilt adjusts the motor angle inrelation to the transom. The power tilt switchis located on top of the steerin

U68T14.book Page 2 Monday, April 1, 2002 4:32 PM

2-15EEMU00155TILT SUPPORT KNOB Power tilt modelTo keep the outboard motor in the tilted-upposition, push the tilt support knob under theswivel bracket

2-16EEMU00161 TOP COWLING LOCK LEVERTo remove the engine top cowling, pull upthe lock lever. Then lift off the cowling. Whenreplacing the cowling, che

2-17EEMU00169 WARNING SYSTEMCAUTION:@ Do not continue to operate the engine ifthe warning device has activated. Con-sult your Yamaha dealer if the pro

E3EMU00174 Chapter 3OPERATIONINSTALLATION...3-1Mounting the outboard motor ...3-2Clamping the ou

3-1EEMU00175 INSTALLATIONCAUTION:@ Incorrect engine height or obstructionsto smooth water flow (such as the designor condition of the boat or accessor

3-2EEMU01478MOUNTING THE OUTBOARD MOTORWARNING@ ●Overpowering a boat may causesevere instability. Do not install an out-board motor with more horsepow

3-3EEMU01298 Mounting Height To run your boat at optimum efficiency, thewater-resistance (drag) of the boat and out-board motor must be made as little

3-4EEMU01318¯CLAMPING THE OUTBOARD MOTOR 1) Place the outboard on the transom sothat it is positioned as close to the cen-ter as possible. Tighten the

3-5EEMU00224 BREAKING IN (RUNNING IN) ENGINEYour new engine requires a period of break-in (running-in) to allow mating surfaces ofmoving parts to wear

3-6EEMU00204 PRE-OPERATION CHECKSWARNING@ If any item in the pre-operation check isnot working properly, have it inspectedand repaired before operatin

EEMU00003 CONTENTSREAD THIS OWNER’S MANUAL CAREFULLY BEFORE OPERATING YOUR OUTBOARD MOTOR.GENERAL INFORMATION1BASIC COMPONENTS2OPERATION3MAINTENANCE4T

3-7EEMU00209 Controls ●Check throttle, shift, and steering forproper operation before starting theengine. ●The controls should work smoothly, with-out

3-8EEMU00202FILLING FUEL1) Remove the fuel tank cap. 2) Fill the fuel tank carefully. 3) Close the cap securely after refueling.Wipe up any spilled fu

3-9EEMU01461STARTING ENGINEWARNING@ ●Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of any obstruc-t

3-10EEMU01497PROCEDURE FOR TILLER CONTROL MODEL 4) Place the gear-shift lever in the neutralposition. NOTE:@ The start-in-gear protection device preve

3-11EEMU01514¯Manual Start Models 7) Pull out the choke knob completely. NOTE:@ It is not necessary to use the choke whenrestarting a warm engine. @ 8

3-12EEMU01491Electric Start Models 7) Pull out the choke knob completely. NOTE:@ ●It is not necessary to use the choke whenrestarting a warm engine. ●

3-13EEMU01000PROCEDURE FOR REMOTE CONTROL MODEL4) Place the remote control lever in theNeutral position. When the engine iswarm, open the throttle sli

3-14EEMU01512Electric Start Models 7) Open the throttle slightly lifting the neu-tral throttle lever upwards partially. Youmay need to change the thro

3-15EEMU01368¯WARMING UP ENGINE1) After the engine starts, return the chokeknob to the half-way position. Forapproximately the first 5 minutes afterst

3-16EEMU00261 SHIFTINGWARNING@ Before shifting, make sure there are noswimmers or obstacles in the water nearyou. @ CAUTION:@ To change the shifting p

U68T14.book Page 2 Monday, April 1, 2002 4:32 PM

3-17EEMU01326¯REVERSE WARNING@ When operating in Reverse, go slowly.Do not open the throttle more than half.Otherwise, the boat may become unsta-ble,

3-18EEMU00273 STOPPING ENGINELet it cool off for a few minutes at idle or lowspeed first. Stopping the engine immediatelyafter operating at high speed

3-19EEMU01412TRIMMING OUTBOARD MOTORThe trim angle of the outboard motor helpsdetermine the position of the bow of the boatin the water. The correct t

3-20EADJUSTING TRIM ANGLEEMU00951 Manual tilt modelThere are 4 or 5 holes provided in the clampbracket to adjust the outboard motor trimangle. 1) Stop

3-21EEMU01414Power Tilt ModelWARNING@ ●Be sure all people are clear of the out-board motor when adjusting the tiltangle, also be careful not to pinch

3-22E2) Tilt the engine to the desired angleusing the power tilt switch. NOTE:@ Stay within the trim operating angle whentrimming the outboard motor u

3-23EEMU01558 Bow Up When the boat is on plane, a bow-up atti-tude results in less drag, greater stabilityand efficiency. This is generally when theke

3-24EEMU00285 TILTING UP/DOWNIf the engine will be stopped for some time,or if the boat is moored in shallows, theengine should be tilted up to protec

3-25EEMU00290 PROCEDURE FOR TILTING UPManual tilt model 1) Place the gear shift lever in Neutral. 2) Remove the fuel line connection fromthe motor. 3)

3-26EEMU01573 PROCEDURE FOR TILTING UP Power tilt models 1) Disconnect the fuel line or close the fuelcock. 2) Push the power tilt switch “UP” until t

E1EMU00004 Chapter 1GENERAL INFORMATIONIDENTIFICATION NUMBERS RECORD...1-1Outboard motor serial num

3-27E3) Push the tilt support knob into the clampbracket to support the engine. WARNING@ ●After tilting the engine, be sure to sup-port it with the ti

3-28EEMU01370CRUISING IN SHALLOW WATERManual tilt modelThe outboard motor can be tilted up partiallyto allow operation in shallow water. WARNING@ ●Pla

3-29EEMU00310 PROCEDURE1) Place the gear shift lever in the neutralposition. 2) Place the tilt lock lever in the releaseposition. 3) Slightly tilt up

3-30EEMU01319CRUISING IN SHALLOW WATERPower tilt model The engine can be tilted up partially to allowoperation in shallow water. WARNING@ ●Place the g

3-31E2) Slightly tilt up the engine using thepower tilt switch.U68T14.book Page 31 Monday, April 1, 2002 4:32 PM

3-32EEMU00316 CRUISING IN OTHER CONDITIONSCRUISING IN SALT WATERAfter operating in salt water, wash out thecooling-water passages with fresh water top

3-33E-MEMO-U68T14.book Page 33 Monday, April 1, 2002 4:32 PM

E4EMU00317 Chapter 4MAINTENANCESPECIFICATIONS...4-1TRANSPORTING AND STORING OUTBOARD MOTOR...

4-1EEMU01870¯SPECIFICATIONSModelItemUnit F6MHBDIMENSIONSOverall length mm (in.) 927 (36.5)Overall width mm (in.) 350 (13.8)Overall height S/L/X mm (in

4-2EF8MHB T8PHB T8EHB1,038 (40.9) 1,038 (40.9) 1,038 (40.9)371 (14.6) 371 (14.6) 371 (14.6)998 (39.3)/1,125 (44.3)/––/1,187 (46.7)/1,255 (49.4) –/1,18

1-1EEMU00005 IDENTIFICATION NUMBERS RECORDEMU00007 OUTBOARD MOTOR SERIAL NUMBERThe outboard motor serial number isstamped on the label attached to the

4-3EModelItemUnit T8PRBDIMENSIONSOverall length mm (in.) 552 (21.7)Overall width mm (in.) 312 (12.3)Overall height S/L/X mm (in.) –/1,187 (46.7)/1,255

4-4EEMU01369TRANSPORTING AND STORING OUTBOARD MOTORWARNING@ Leaking fuel is a fire hazard. When trans-porting and storing the outboard motor,close the

4-5E12EMU01362 TRANSPORTING OUTBOARD WHEN UNMOUNTEDTransport in an upright position to preventengine oil from entering the cylinder headand causing da

4-6EEMU00335 Filling Fuel Tank Fill the fuel tank with fresh fuel and add oneounce of “Yamaha Fuel Conditioner and Sta-bilizer” (Part No. LUB-FUELC-1

4-7EEMU00340 ●Flushing in a Water Tank CAUTION:@ If the fresh water level is below the levelof the anti-cavitation plate, or if the watersupply is ins

4-8EEMU00349Lubrication 1) Remove the spark plug(s). Spray aYamaha “Stor-Rite Engine Fogging Oil”into each cylinder for 10 seconds.Grease the spark p

4-9EEMU01545Battery Care WARNING@ Battery electrolyte is poisonous and dan-gerous, causing severe burns, etc. It con-tains sulfuric acid. Avoid contac

4-10EEMU00354PERIODIC MAINTENANCEWARNING@ Be sure to turn off the engine when youperform maintenance unless otherwisespecified. If you or the owner is

4-11EEMU00363¯MAINTENANCE CHARTFrequency of maintenance operations may be adjusted according to the operating condi-tions, but the following table giv

4-12EEMU00366GREASINGYamaha marine grease (Water resistant grease)U68T14.book Page 12 Monday, April 1, 2002 4:32 PM

1-2EEMU01385EMISSION CONTROL INFORMATIONEMU01444NORTH AMERICAN MODELS This engine conforms to U.S. EnvironmentalProtection Agency (EPA) regulations fo

4-13EEMU01202 CLEANING AND ADJUSTING SPARK PLUGWARNING@ When removing or installing a sparkplug, be careful not to damage the insu-lator. A damaged in

4-14EWhen fitting the plug, always clean the gas-ket surface and use a new gasket. Wipe offany dirt from the threads and screw in thespark plug to the

4-15EEMU01509 CHECKING FUEL SYSTEM WARNING@ Gasoline (petrol) and its vapors arehighly flammable and explosive. Keepaway from sparks, cigarettes, flam

4-16EEMU00370 INSPECTING FUEL FILTERWARNING@ Gasoline (petrol) is highly flammable,and its vapors are flammable and explo-sive. ●If you have any quest

4-17EEMU00991 ADJUSTING IDLING SPEEDWARNING@ ●Do not touch or remove electrical partswhen starting or during operation. ●Keep hands, hair and clothes

4-18EEMU01415¯CHANGING ENGINE OILWARNING@ ●Avoid draining the engine oil immedi-ately after stopping the engine. The oilis hot and should be handled w

4-19ENOTE:@ If a torque wrench is not available when youare installing the drain plug, finger tightenthe bolt just until the gasket comes into con-tac

4-20EEMU00380 CHECKING TIMING BELTInspect the timing-belt and replace it if anyto the following signs is observed: ●Cracks in the back of the belt or

4-21EEMU00383 CHECKING WIRING AND CONNECTORS1) Check that each grounding wire is prop-erly secured. 2) Check that each connector is engagedsecurely.EM

4-22EEMU01322CHECKING POWER TILT SYSTEM WARNING@ ●Never get under the lower unit while itis tilted, even when the tilt-supportknob is locked. Severe i