1986 mercury 20 hp slips out of gear

waldo1

Cadet
Joined
Aug 5, 2009
Messages
8
Hi everybody!
Just yesterday going full speed on the lake, sudenly the engine goes in high pitch rev(or sounds like it). Starts to vibrate and slows down.
Switch on neutral idling o.k, switch to forward only works on slow speed.
Turn off the engine and then put into reverse - the propeller would not spin but when i switch to forwards it would spin (one direction only).

What do you guys think is the problem?

Thanks
 

jackd1023

Petty Officer 1st Class
Joined
Aug 15, 2006
Messages
269
Re: 1986 mercury 20 hp slips out of gear

Check LU oil. should be a magnet on the bottom drain plug. Check for metal on this. you may have grenaded it
 

Judgie05

Cadet
Joined
Oct 2, 2009
Messages
10
Re: 1986 mercury 20 hp slips out of gear

Your could have spun a hub on your prop. Try a new prop
 

waldo1

Cadet
Joined
Aug 5, 2009
Messages
8
Re: 1986 mercury 20 hp slips out of gear

Chech the LU oil,no pieces off metal ,oil looks clean no water.
Pull out the prop looks good but found trust washer witch just two dogs ,one was broken.
Is this the problem ?
 
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