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MerCruiser 43 Prop Wonbt Turn

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Paul Hopman

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"I have a 1992 MerCruiser 4.3

"I have a 1992 MerCruiser 4.3 with an Alpha One, Gen 2 outdrive. A few days ago, while running down our canal at about 1,000 RPM, the prop stopped turning without any warning. A grinding, growling noise started at the same time. I shut the engine down immediately, and then tried to start it to get to a dock. The boat wouldn't move and even stalled a couple of times like it was under load.

The boat is now out of the water. The prop turns freely (motor not running) in neutral, ratchets in one direction in gear...but can be turned with a some resistance (kind of a stutter) in the other direction while in gear.

Any idea as to my problem?

Thanks....This site has helped me twice in the past!"
 
Low oil level in drive equals

Low oil level in drive equals BAD upper gears which means terrible noise and no-go. Ouch!!
 
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