Owner's Manual DF300 Break-In

Proper operation during this break-in period will help ensure maximum lite and performance from your engine. The following guidelines will explain
proper break-in procedures.

Failure to follow the break-in procedures described below can result in severe engine damage.

Break-in period: 10 hours

Break-in procedure

1. For the initial 2 hours:

Allow sufficient idling time (about 5 minutes) for the engine to warm up after cold engine starting.

High speed without sufficient warm-up may cause severe engine damage such as piston seizure.

After warming up, run the engine at idling speed or the lowest in-gear speed for about 15 minutes.

During the remaining 1 hour and 45 minutes, it sale boating conditions permit, operate the engine in gear at less than 1/2 (halt) throttle (3000 r/min.).

You may throttle up beyond the recommended operating range to plane your boat, then immediately reduce the throttle to the recommended operating range.

2. For the next hour:

Safe boating conditions permitting. operate the engine in gear at 4000 r/min. or at three-quarter throttle. Avoid running the engine at full throttle.

3. Remaining 7 hours:

Safe boating conditions permitting, operate the engine in gear at desired engine speed. You may occasionally use full throttle; however do not operate the engine continuously at lull throttle for more than 5 minutes at anytime.

For the remaining 7 hours of break-in operation, you may use full throttle; however do not operate the engine continuously at full throttle for more than 5 minutes at a time or severe engine damage such as seizure may result.