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Seahorse
20-01-2008, 06:56 PM
Bought new boat 8/06 and put 75hp merc on it. All New.
When running motor at under 1000 revs it had a real growling noise. It was really loud and also sounded bit grindy.
I took it back to dealer and he put in new busch from an optimax.
It was good, and lost about 80% of noise. When i was at the boat show i went over to merc stand and he confirmed this was thing to do.
Only prob was, that the prop had bit of a rattle, when stopped. u could move it a bit side by side with ur hand.
It was only ever so slight but it was never rock solid.
When i took it in for a service last week, i said to the guys what i had done and he said that it should be real tight and he would shave a liitle of the busch so it would fit real tight.
It is nice and tight now, but the noise is back, just as bad as the beginnining.
Has anyone else had this prob.
Iam going back to dealer in morning.
I want it as is was.
Hope i dont have any battles.

Cheers
greg