locked up 2002 70hp yamaha

fish1828

Recruit
Joined
Feb 17, 2009
Messages
2
My motor locked up and we turned it over with a wrench. Pulled head and cylinders and pistons look great. Next pulled the lower unit and it was still hard to turn over. Am I correct in thinking it is probably an upper bearing problem ?
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: locked up 2002 70hp yamaha

usually its the bottom bearing that failed, could also be a rod or wristpin bearing stuck. from here its pull the powerhead,crack it open and carefully inspect the bearings.
 
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