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Old 06-25-2021, 09:15 AM   #19
Ski in NC
Technical Guru
 
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City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
I have had my cutless squeak when I transited from cold water to warm. Guess the rubber swelled a bit (it was new) and gripped the shaft. Could hear it squeal at dead idle and when prop shaft coasted down going into neutral. Did it for like a year, but guess it has worn itself in and no more noise.

When investigating it I found the shaft was binding a bit when rotating by hand. No longer have that binding (smooth as buttah) and no more noise.

Do check the alternator belts, that can do it too, depending on elec system loads and belt tension.

A hole in a turbo air hose can make a heck of a noise, but will only be there at higher power settings.
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