Yamaha 50A Manual do Proprietário Página 1

40A/50ALIT-18626-04-5540A50AOWNER’S MANUALU.S.A.Edition63B-9-19 hyoshi 01.4.18 2:07 PM y[W 1 (2,1)

E1-3EMU00917SAFETY INFORMATION8 Before mounting or operating the out-board motor, read this entire manual.Reading it should give you an under-standing

E4-175) Attach the filter assembly to thebracket with that the fuel hoses areattached to the filter assembly.6) Run the engine and check the filterand

E4-182) Adjust the throttle stop-screw to setthe idling speed to specification (see“SPECIFICATIONS”) by turning thestop-screw clockwise to increase th

E4-19EMU01329REPLACING FUSEIf the fuse has blown on an Electric startmodel, open the fuse holder and replacethe fuse with a new one of proper amper-ag

E4-20EMU00992CHECKING POWER TRIM AND TILTSYSTEMw8 Never get under the lower unit while itis tilted, even when the tilt-supportlever is locked. Severe

E4-21EML08011*CHECKING PROPELLERwYou could be seriously injured if theengine accidentally starts while you arenear the propeller.8 Before inspecting,

E4-221 Thrust washer2 Propeller3 Spacer4 Washer5 Propeller nut6 Cotter pinInstallation1) Apply Yamaha Marine grease (water-resistant grease) to the pr

E4-23EMU01460CHANGING GEAR OILw8 Be sure the outboard is securely fas-tened to the transom or a stable stand.You could be severely injured if the out-

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

E4-25To clean the fuel tank1) Empty the fuel tank into an approvedgasoline (petrol) container.2) Pour a small amount of suitable sol-vent in the tank.

E4-26EML26010CHECKING BATTERY(for Electric start model)wBattery electrolytic fluid is dangerous; itcontains sulfuric acid and therefore is poi-sonous

E1-48 When a swimmer is in the water nearyou shift into neutral and shut off theengine.8 Be informed about boating safety. Addi-tional publications an

E4-271) Check the electrolyte level at leastonce a month. Fill to the manufactur-er’s recommended level when neces-sary. Top up only with distilled wa

E4-28EMU01280Disconnecting the BatteryDisconnect the BLACK lead from the NEG-ATIVE (-) terminal first. Then disconnectthe RED lead from the POSITIVE (

E4-29EML42011MOTOR EXTERIORCleaning the Outboard MotorAfter use, wash the exterior of the out-board with fresh water. Flush the coolingsystem with fre

123456EEMN00010Chapter 5TROUBLE RECOVERYTROUBLESHOOTING ...5-1TEMPORARY ACTION IN EMERGENCY ...

5-1EEMU01204¯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

5-3ED. 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

5-5EEMN20010TEMPORARY ACTION INEMERGENCYEMH80010IMPACT DAMAGEwThe outboard motor can be seriouslydamaged by a collision while operatingor trailering.

E5-6EMN30310STARTER WILL NOT OPERATEIf the starter mechanism does not operate(engine cannot be cranked with thestarter), the engine can be started wit

WARNINGThis engine is equipped with a neutral starting device. The engine will not start unless the shift control isin neutral position.6E0-83627-41WA

E5-7Procedure1) Remove the top cowling.2) Remove the starter/flywheel cover byremoving the bolts.NOTE:On a model equipped with the start-in-gear prote

E5-8EMN32411ENGINE FAILS TO OPERATECold engine fails to start (for Prime startmodel)If a cold engine fails to start, use the fol-lowing procedure.1) A

E5-95) Set the MAIN SWITCH to “ON”.6) Set the MAIN SWITCH to “START”.NOTE:When the starter mechanism malfunctions,refer to “STARTER WILL NOT OPERATE”.

E5-10EMN50011TREATMENT OF SUBMERGEDMOTORIf the outboard motor is submerged,immediately take it a Yamaha dealer. Oth-erwise, some corrosion may begin a

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EMP00010Chapter 6INDEXINDEX...6-1123456E 63B-9-19-6 (E) 4/18/01 11:43 AM Page 1

6-1EMP10010INDEXAAdjusting idling speed ...4-17Adjusting trim angle...3-24Air vent screw...

6-2Motor exterior ...4-29Mounting height ...3-3Mounting the outboard motor ...

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,

E1-6EMB40010BASIC BOATING RULES(Rules of the road)Just as there are rules which apply whenyou are driving on streets and high ways,there are waterway

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

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

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63B-9-19 hyoshi 01.4.18 2:07 PM y[W 2 (2,1)

40A/50APrinted in JapanMarch 2001—0.5 ×1 !63B-28199-19(40VMHO,40VETO, 50HETO, 50EJDO)(E)Printed on recycled paperOWN63B-9-19 hyoshi 01.4.18 2:07 PM

40A/50APrinted in JapanMarch 2001—0.5 ×1 !63B-28199-19(40VMHO,40VETO, 50HETO, 50EJDO)(E)Printed on recycled paperOWN63B-9-19 hyoshi 01.4.18 2:07 PM

E1-7RULES WHEN ENCOUNTERING VESSELSThere are three main situations which youmay encounter with other vessels whichcould lead to a collision unless the

Eits course and speed. You must stay outof its way until you are clear of it. Like-wise, if another vessel is passing you, youshould maintain your spe

E1-9111A111Proceeding toward headof navigation from seawardCAN BUOYOdd number. Leave to port.ORSECONDARY CHANNEL BUOYSSTARTS NEW NUMBERING SYSTEMold

E1-10EMU00016FUELING INSTRUCTIONSwGASOLINE AND ITS VAPORS ARE HIGH-LY FLAMMABLE AND EXPLOSIVE!8 Do not smoke when refueling, andkeep away from sparks,

EMU00018GASOLINE (PETROL)If knocking or pinging occurs, use a differ-ent brand of gasoline or premium unlead-ed fuel. If unleaded gasoline is not avai

EMU00031BATTERY REQUIREMENTcCDo not use the battery that does notmeet the specified capacity. If differentbattery from the specification is used, thee

63B-9-19 hyoshi 01.4.18 2:07 PM y[W 2 (1,1)

E1-13EMU01395PROPELLER SELECTIONThe performance of your outboard motorwill be critically affected by your choice ofpropeller, as an incorrect choice c

1-14E60201110-3/4x17-G1 23EMU01209START-IN-GEAR PROTECTIONYamaha outboard motors or Yamahaapproved remote control units areequipped with start-in-gear

E-MEMO- 63B-9-19-1 (E) 4/18/01 11:36 AM Page 20

E123456EMC00010Chapter 2BASIC COMPONENTSMAIN COMPONENTS...2-1OPERATIONS OF CONTROLS ANDOTHER FUNCTIONS ...

E2-1101133*werqtyu!6!5!4!3!2!1!0oiEMU01206MAIN COMPONENTS1 Recoil starter handle2 Multifunction tiller handle3 Choke knob4 Warning indicator lamp (Oil

2-2E!4!5!3!2!1!0oitrwqyueEMU01206MAIN COMPONENTS1 Oil filler access cap2 Warning indicator lamp3 Clamp bracket4 Battery lead5 Anode6 Cooling water inl

2-3EEMC20010OPERATIONS OF CONTROLSANDOTHER FUNCTIONSEMC21012FUEL TANKIf your model was equipped with aportable fuel tank, its function is as fol-lows.

2-4EEMU00075MULTIFUNCTION TILLER HANDLEThe tiller handle centralized most of func-tions for the outboard motor operation.1 Tiller handle2 Gear shift l

2-5EEMC40210Throttle indicatorThe fuel consumption curve on the throt-tle indicator shows the relative amount offuel consumed for each throttle positi

2-6EEMC28210Engine stop lanyard switchThe lock-plate on the end of the lanyardmust be attached to the engine stopswitch for the engine to run. The lan

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

2-7EEMU00096*REMOTE CONTROLBoth the shifter and the throttle are actu-ated by the remote control lever. Addi-tionally, the remote control also has the

2-8EEMC50110Neutral interlock triggerTo shift out of Neutral, the neutral inter-lock trigger of the remote control levermust first be pulled up.EMC502

2-9EEMU01331Power Trim/Tilt SwitchThe power trim/tilt adjusts the motorangle in relation to the transom. Thepower trim/tilt switch is located on there

2-10EEMC28210Engine stop lanyard switchThe lock-plate on the end of the lanyardmust be attached to the engine stopswitch for the engine to run. The la

2-11EEMC87011Throttle friction adjusting screwA friction device in the remote control boxprovides resistance to movement of theremote control lever. T

2-12E404015*404011*EMD00011*STEERING FRICTION ADJUSTINGSCREW40MHA friction device provides resistance tosteering movement. This is adjustable foropera

2-13E302013*DNUP412012EMD08110SHALLOW WATER LEVER(If equipped)Pushing this lever down will tilt the motorup partially to provide more clearancewhen op

2-14E303016q303012*qEMU00120WARNING INDICATORIf the engine develops a condition whichis cause for warning, the indicator on thefront of the bottom cow

2-15EEMU01614DIGITAL TACHOMETERThis gauge contains the tachometer, trimmeter, hour meter, oil level indicator, andthe overheat warning indicator.1 Tac

2-16EEMU01109Trim MeterThis meter shows the trim angle of youroutboard motor.NOTE:8 Memorize the trim angles that workbest for your boat under differe

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2-17E001051q001052qEMU01553Overheat Warning IndicatorIf the engine temperature rises too high,the warning indicator will start to blink.Refer to “OVER

2-18EEMD04011*TRIM TABThe trim tab should be adjusted so thatthe steering control can be turned toeither the right or left by applying thesame amount

2-19EEMD45010TILT LOCK MECHANISM(for Hydro-tilt model)Tilt-lock mechanism is used to preventreverse thrust from the propeller liftingthe outboard moto

2-20EEMD60210TILT SUPPORT LEVER40MHTo keep the outboard motor in the tilted-up position, lock the tilt support lever tothe swivel bracket.403024301013

2-21EEMD82012*OVERHEAT WARNINGThis engine has an overheat warningdevice.If the engine temperature rises too high,the warning device will activate.(2);

2-22E001094EMD84012*OIL LEVEL WARNING / OIL FILTERCLOGGING WARNINGThis engine has an oil level warning sys-tem. If oil level falls below lower limit,

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123456EEMF00010Chapter 3OPERATIONINSTALLATION ...3-1Mounting the outboard motor...3-2Clamping the outboa

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

E3-2EMF12012MOUNTING THE OUTBOARDMOTORwImproper mounting of the outboard motorcould result in hazardous conditions suchas poor handling, loss of contr

GENERAL INFORMATIONBASIC COMPONENTSOPERATIONMAINTENANCETROUBLE RECOVERYINDEXEMA20010CONTENTSREAD THIS OWNER’S MANUAL CAREFULLYBEFORE OPERATING YOUR OU

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

E3-4EMU01318CLAMPING THE OUTBOARD MOTOR40MH1) Place the outboard on the transom sothat it is positioned as close to thecenter as possible. Tighten the

E3-5EMF20010FILLING FUEL ANDENGINE OILEMF30011FILLING FUEL1) Remove the fuel tank cap.2) Fill the fuel tank carefully.3) Close the cap securely after

3-6EEMF32011FILLING OIL(for Precision blend system model)This engine uses the YAMAHA PRECI-SION BLEND SYSTEM, which providessuperior lubrication by en

E3-7wq203013*203016*qw203014203015EMF34110ProcedureElectric start model1) Turn the oil filler access cap on top ofthe top cowling counterclockwise and

3-8EEMD33010Oil level indicatorManual start modelThe various oil-level system functions are as follows:EMD33110Oil level indicatorElectric start model

E3-9EMF40012PRE-OPERATION CHECKSwIf any item in the pre-operation check isnot working properly, have it inspectedand repaired before operating the out

E3-10EMF43510Engine8 Check the engine and engine mounting. 8 Look for loose or damaged fasteners. 8 Check the propeller for damage.cCDo not start the

E3-11EMF50112BREAKING IN (RUNNING IN)ENGINEYour new engine requires a period ofbreak-in (running-in) to allow mating sur-faces of moving parts to wear

E3-12EMU00227Run the engine under load (in gear with apropeller installed) as follows.1) First 10 minutes:Run the engine at the lowest possi-ble-speed

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E9020253-13EMU01147STARTING ENGINEw8 Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of any obstructi

501023EEMU00854PROCEDURE FOR TILLER CONTROLMODEL4) Place the gear-shift lever in the neu-tral position.NOTE:The start-in-gear protection device pre-ve

3-15E305043*209015EMF63110Manual start model7) Pull out the choke knob completely.NOTE:It is not necessary to use the choke whenrestarting a warm engi

E3-16EMF65010PROCEDURE FOR REMOTECONTROL MODEL 4) Place the remote control lever in theNeutral position.NOTE:8 The start-in-gear protection device pre

3-17EONSTARTOFF701022EMF63910Electric start model7) Turn the main switch to “START”, andhold it for a maximum of 5 seconds.8) Immediately the engine s

3-18EEMG00210WARMING UP ENGINE1) Before beginning operation, allow theengine to warm up at idling speed for3 minutes. (Failure to do this willshorten

3-19EEMG20111SHIFTINGwBefore shifting, make sure there are noswimmers or obstacles in the water nearyou.cCTo change the shifting position from for-war

3-20ETiller control model3) Turn the gear-shift lever quickly andfirmly from Neutral to Reverse.402051501031NRNR701044EMU01326REVERSEwWhen operating i

3-21EEMG38010STOPPING ENGINELet it cool off for a few minutes at idle orlow speed first. Stopping the engineimmediately after operating at high speedi

3-22EEMG35310PROCEDUREMain switch equipped model1) Turn the main switch to “OFF”.NOTE:The engine can also be stopped bypulling the lanyard from the en

E23456EMB00010Chapter 1GENERAL INFORMATIONIDENTIFICATION NUMBERS RECORD ...1-1Outboard motor serial n

3-23E000862qEMU01412TRIMMING OUTBOARDMOTORThe trim angle of the outboard motorhelps determine the position of the bowof the boat in the water. The cor

3-24EADJUSTING TRIM ANGLEEMU00951Manual tilt modelThere are 4 or 5 holes provided in theclamp bracket to adjust the outboardmotor trim angle.1) Stop t

3-25EUPDN701034UPDNqEMU01401Power Trim/Tilt Modelw8 Be sure all people are clear of the out-board motor when adjusting thetrim/tilt angle, also be car

3-26EEMG62010Bow upWhen the boat is on plane, a bow-up atti-tude result in less drag, greater stabilityand efficiency. This is generally when thekeel

3-27E000817EMH10110TILTING 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

3-28EEMG63010PROCEDURE FOR TILTING UPManual tilt model1) Remove the fuel-line connection fromthe motor. (If the fuel connector isprovided on the motor

3-29EEMG63110PROCEDURE FOR TILTING UPHydro-tilt model1) Remove the fuel-line connection fromthe motor.304036402011*4030112) Place the tilt-lock lever

3-30EEMG63210PROCEDURE FOR TILTING UPPower trim and tilt model1) Remove the fuel-line connection fromthe motor.304036UPDN701034UPDN302013*DNUP4030112)

3-31EEMG73210*PROCEDURE FOR TILTING DOWNManual tilt model1) Return the tilt support lever tilting upthe engine slightly.2) Tilt down the engine.411035

3-32E000832EMG70011*CRUISING IN SHALLOWWATERManual tilt modelThe outboard motor can be tilted up par-tially to allow operation in shallow water.w8 Pla

E1-11401012904011123YAMAHAqEMU00005IDENTIFICATION NUMBERSRECORDEMU00007OUTBOARD MOTOR SERIALNUMBERThe outboard motor serial number isstamped on the la

3-33E412012501024N412022EMG71410PROCEDURE1) Place the gear shift lever in the neu-tral position.2) Push the shallow water lever down tothe release pos

3-34E402011000832EMG70311CRUISING IN SHALLOWWATERHydro tilt modelThe engine can be tilted up partially toallow operation in shallow water.w8 Place the

3-35EEMH60010CRUISING IN OTHERCONDITIONSCRUISING IN SALT WATERAfter operating in salt water, wash out thecooling-water passages with fresh waterto pre

123456EEMK00010Chapter 4MAINTENANCESPECIFICATION DATA...4-1TRANSPORTING AND STORINGOUTBOARD MOTOR ...

ModelUnit 40MHAItem4-1EDIMENSIONSPERFORMANCE8Overall Length mm (in.)8Overall Width mm (in.)8Overall Height S/L/X mm (in.)8Transom height S/L/X mm (in.

E4-24,500–5,50029.4 (40) at 5,000 r/min750–850646 (25.4)360 (14.2)—/1,319 (51.9)/1,464 (57.6)—/533 (21.0)/647 (25.5)—/88 (194)/91.5 (202)670 (26.4)360

4-3EEMU01369*TRANSPORTING ANDSTORING OUTBOARD MOTORwLeaking fuel is a fire hazard. When trans-porting and storing the outboard motor,close the air ven

E4-4EMK16010STORING OUTBOARD MOTORWhen storing your Yamaha outboard forprolonged periods of time, (2 months orlonger), several important proceduresmus

E4-5605024qwEMK22511Flushing Cooling System and FoggingEngineCooling system flushing is essential toprevent the cooling system from cloggingup with sa

E4-64) Just prior to turning off the engine,quickly spray “Yamaha Stor-RiteEngine Fogging Oil” (Part No. LUB-STRRT-12-00) alternately into eachcarbure

1-2E000909qwEMU01385EMISSION CONTROLINFORMATIONEMU01386NORTH AMERICAN MODELSThis engine conforms to U.S. Environ-mental Protection Agency (EPA) regula

4-7EEMK26112Lubrication1) Remove the spark plugs, and spray a10 second spray of “Yamaha Stor-Rite Engine Fogging Oil” into eachcylinder. Grease the s

E4-8EMK29010Battery CarewBattery electrolyte is poisonous and dan-gerous, causing severe burns, etc. It con-tains sulfuric acid. Avoid contact withski

E4-9EMK32110PERIODIC MAINTENANCEwBe sure to turn off the engine when youperform maintenance unless otherwisespecified. If the owner is not familiar wi

4-10E*1. for Power trim and tilt model*2. If equipped*3. When operating in salt water, turbid or muddy water, the engine should be flushed with cleanw

4-11EEMU00366GREASINGYamaha marine grease(Water resistant grease) 63B-9-19-4 (E) 4/18/01 11:40 AM Page 12

4-12EEMU00366GREASINGYamaha marine grease(Water resistant grease) 63B-9-19-4 (E) 4/18/01 11:40 AM Page 13

4-13EEMU01202CLEANING AND ADJUSTING SPARKPLUGwWhen removing or installing a spark plug,be careful not to damage the insulator. Adamaged insulator coul

E4-14When 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

E4-15EMK38010CHECKING FUEL SYSTEMwGasoline (petrol) and its vapors are highlyflammable and explosive. Keep awayfrom sparks, cigarettes, flames or othe

E4-16EMK50011CLEANING FUEL FILTERwGasoline (petrol) is highly flammable, andits vapors are flammable and explosive.8 If you have any question about pr