Operation EMU36380 First-time operation Run the engine at the lowest possible speed. A fast idle in neutral is best. 2. Next 50 minutes: Do not exceed half throttle (approxi- mately 3000 r/min). Vary engine speed occasionally. If you have an easy-plan- ing boat, accelerate at full throttle onto plane, then immediately reduce the throttle 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 at full throttle for one minute, then allow about 10 minutes of operation at three- quarter throttle or less to let the engine cool. 4. Remaining seven hours:
Run the engine at any speed. However, avoid operating at full throttle for more than 5 minutes at a time. 5. After the first 10 hours: Operate the engine normally. Use only straight gasoline in the fuel tank. The Yamaha oil injection system provides proper lubrication for normal operation. EMU27020 Breaking in engine Your new engine requires a period of break- in to allow mating surfaces of moving parts to wear in evenly. Correct break-in will help en- sure proper performance and longer engine life. ECM00140 NOTICE Failure to follow the break-in procedure could result in reduced engine life or even severe engine damage.
Premix fuel must be used during break- in in addition to oil in the oil injection system. EMU27060 Gasoline and engine oil mixing chart (50:1) 1. : Gasoline EMU36400 Getting to know your boat Different boats handle differently. Operate cautiously while you learn how your boat handles under different conditions and with different trim angles (see page 47). 2. : Engine oil ECM00150 Be sure to mix gasoline and oil complete- ly, otherwise the engine may be dam- aged. NOTICE EMU36412 Checks before starting engine EWM01920 EMU30311 Procedure for oil injection models Run the engine under load (in gear with a propeller installed) for 10 hours as follows. 1. First 10 minutes:
If any item in the checks before starting engine is not working properly, have it in- spected and repaired before operating the outboard motor. Otherwise an acci- 35 WARNING