Breaking In (Running In) Engine - Yamaha 40A Owner's Manual

EMF50112
BREAKING IN (RUNNING IN)
Your new engine requires a period of
break-in (running-in) to allow mating sur-
faces of moving parts to wear-in evenly.
Correct break-in (running-in) will help
ensure proper performance and longer
engine life.
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8 Failure to follow the break-in (running-
in) procedure may result in reduced
engine life or even severe engine dam-
age.
8 Premix fuel must be used during break-
in (running-in) in addition to oil in the
Precision Blend System.
Break-in (running-in) time:10 hours
Break-in (running-in) premix ratio
Gasoline (petrol) : Engine oil =50 : 1
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ENGINE
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