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Thread: Yanmar 3GM30F
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post #10 of Old 09-26-2007
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If your max RPM is 3600 on that engine it is important that the engine is able to run at a minimum of 90% of rated RPM. If it won't then Yanmar will deny all warranty claims as the boat is overpropped. The newer yanmars run at a lower RPM. I actually thought your max is 3800. The engine should be able to run forever at 90% of rated power. Running a diesel long term at lower RPM's (under about 80%) leads to wet stacking which is very harmful to the engine.
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