HPDI Two Strokes

Do NOT pre-mix oil into fuel during break-in under any circumstances

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

First Ten minutes:
Run the engine at the lowest possible speed. A fast idle in neutral is best.

Next 50 Minutes:
Do not exceed half throttle (approx. 3000 rpm). Vary engine speed occasionally. If you have an easy planing boat, accelerate at full throttle onto plane, then immediately reduce the throttle to 3000 rpm or less.

Second Hour:
Accelerate at full throttle onto plane, then reduce engine speed to three-quarter throttle (approx. 4000 rpm). 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.

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.

After the first TEN hours:
Operate the engine normally