DF140 10-Hour Break-In [from Suzuki Service Manual]
Avoid maintaining a constant engine speed for an extended period at any time during the engine break-in by varying the throttle position occasionally.
1. FIRST 2 HOURS
For first 15 minutes, operate the engine in-gear at idling speed. During the remaining 1 hour and 45 minutes operate the engine in-gear at less than half throttle [3000RPM].
Note: The throttle may be briefly opened beyond the recommended setting to plane the boat, but must be reduced to the recommended setting after planing.
2. NEXT 1 HOUR
Operate the engine in-gear at less than three-quarter throttle [4000 RPM].
3. LAST 7 HOURS
Operate the engine in-gear at desired engine speed. However, do not operate at full throttle for more than 5 minutes.
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Regards
JCW
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