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Break-in (running-in) time:10 hours

Break-in (running-in) premix ratio: Refer to “Gasoline/Petrol and Oil Mixing”.

EMU00226

Run the engine under load (in gear with a propeller installed) as follows.

1)First 10 minutes:

Run the engine at the lowest possi- ble-speed. A fast idle in neutral is best.

2)Next 50 minutes:

Do not exceed half throttle (approxi- mately 3,000 r/min). Vary engine speed occasionally. If you have an easy-planing boat, accelerate at full throttle onto plane, then immediately reduce the throttle to 3,000 r/min or less.

3)Second hour:

Accelerate at full throttle onto plane, then reduce engine speed to three- quarter throttle (approximately 4,000 r/min). Vary engine speed occasional- ly. Run at full throttle for one minute, then allow about 10 minutes of opera- tion at three-quarter throttle or less to let the engine cool.

4)Third through tenth hours:

Avoid operating at full throttle for more than 5 minutes at a time. Let the engine cool between full-throttle runs. Vary engine speed occasionally.

5)After the first 10 hours:

Operate the engine normally. Use the standard premix ratio of gasoline : Oil. (Refer to “Gasoline/Petrol and Oil Mixing”.)

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