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Mercury 90 outboard

mikeynuzz

New member
Hello,
Hope someone can help. I have a 2021 Sun Tracker Party Barge pontoon.
Has a Mercury 90 4 stroke. Runs great

Problem:
When in motion, the trim button works engine up and down ONLY < 2,000 RPM
When accelerating over 2,000 RPM’s the trim does not go up at all. Only on dry land does it go up and down?
Any thoughts
 
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