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2003 bf90 lower unit making noise after installing stainless steel prop

JohnL510

New member
I just install a stainless steel prop on my 2003 bf 90 and when I start it up and put ino gear occasionally it's making a weird noise like something is loose or grinding in the lower unit is that normal?when I run it with a aluminum prop it never makes that noise. Is it because of the weight difference the stainless weights 11 lbs too heavy? Please help any info is greatly appreciate
 
Nope, grinding is NEVER normal! Don't run it that way! You have some sort of compatibility problem with that prop. It may require a different thrust washer than the aluminum one. The prop manufacturer will have some info on how it should adapt to different outboards so make sure you follow those directions.

Good luck.
 
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