Yamaha F25A Owner's Manual

Also see for F25A: Service manual Owner's manual Service manual Service manual Owner's manual

Contents

33OperationEMU36380First-time operationEMU36390Fill engine oilThe engine is shipped from the factory with-out engine oil. If your dealer did not fill the oil,you must fill it before starting the engine. NO-TICE: Check that the engine is filled withoil before first-time operation to avoid se-vere engine damage. [ECM01780]The engine is shipped with the followingsticker, which should be removed after en-gine oil is filled for the first time. For more in-formation on checking the engine oil level,see page 35.EMU30174Breaking 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]EMU27084Procedure for 4-stroke modelsYour new engine requires a period of 10hours break-in to allow mating surfaces ofmoving parts to wear in evenly. Correctbreak-in will help ensure proper performanceand longer engine life.TIP:Failure to follow the break-in procedurecould result in reduced engine life or evensevere engine damage. Run the engine inthe water, under load (in gear with a propel-ler installed) as follows. For ten hours forbreaking in engine avoid extended idling,rough water and crowded areas.1. For the first hour of operation:Run the engine at varying speeds up to2000 r/min or approximately half throttle.2. For the second hour of operation:Increase engine speed as much as nec-essary to put the boat on plane (butavoid full-throttle operation), then backoff on the throttle while keeping the boatat a planing speed.3. Remaining eight hours:Run the engine at any speed. However,avoid operating at full throttle for morethan 5 minutes at a time.4. After the first 10 hours:Operate the engine normally.EMU36400Getting to know your boatDifferent boats handle differently. Operatecautiously while you learn how your boathandles under different conditions and withdifferent trim angles (see page 46).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-ZMU01710