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Top end whine - 1992 Evinrude 150

edc5302

New member
Took the boat out for the first run of the year and noticed a slight but noticable higher pitched whine at 3000 rpm. Can't notice any impact on accelaration or power.

It goes away when I slow down. No other noticable issues other than a little rough idle in gear, probably assiciated with fuel.

Any suggestions: Alernator, starter, fly wheel?
 
There are no moving parts on the alternator.-----Starter should not be turning when engine is running.---Checked magnets inside the flywheel ?
 
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