Yamaha 40v Owner's Manual

Also see for 40V: Owner's manual Service manual Owner's manual Owner's manual Owner's manual

Contents

Yamaha 40v Owner's Manual Manual pdf 39 page image

33OperationEMU36381First-time operationEMU30174Breaking in engineYour new engine requires a period of break-in to allow mating surfaces of moving parts towear in evenly. Correct break-in will help en-sure proper performance and longer enginelife. NOTICE: Failure to follow the break-inprocedure could result in reduced enginelife or even severe engine damage. [ECM00801]EMU27050Gasoline and engine oil mixing chart(25:1)NOTICEECM00150Be sure to mix gasoline and oil complete-ly, otherwise the engine may be dam-aged.EMU27074Procedure for pre-mixed modelsRun the engine under load (in gear with apropeller installed) for 10 hours as follows.1. First 10 minutes:Run the engine at the lowest possiblespeed. A fast idle in neutral is best.2. Next 50 minutes:Do not exceed half throttle (approxi-mately 3000 r/min). Vary engine speedoccasionally. If you have an easy-plan-ing boat, accelerate at full throttle ontoplane, then immediately reduce thethrottle to 3000 r/min or less.3. Next two hours:Accelerate at full throttle onto plane,then reduce engine speed to three-quar-ter throttle (approximately 4000 r/min).Vary engine speed occasionally. Run atfull throttle for one minute, then allowabout 10 minutes of operation at three-quarter throttle or less to let the enginecool.4. Remaining seven hours:Run the engine at any speed. However,avoid operating at full throttle for morethan 5 minutes at a time.5. After the first 10 hours:Operate the engine normally. Use thestandard premix ratio of gasoline and oil.For details on mixing fuel and oil, seepage 36.EMU36400Getting to know your boatDifferent boats handle differently. Operatecautiously while you learn how your boathandles under different conditions and withdifferent trim angles (see page 47).EMU36412Checks before starting engineWARNINGEWM01920If any item in the checks before startingengine is not working properly, have it in-spected and repaired before operatingthe outboard motor. Otherwise an acci-dent could occur.NOTICEECM00120Do not start the engine out of water. Over-heating and serious engine damage canoccur.1. : Gasoline2. : Engine oil