Quote:
Originally Posted by Keith Hart
Hello folks
My neighbour Charlie, is trying to repair a Yamaha 8 hp 2 stroke cylinder outboard engine. The big end bearing on one of the piston rods needs replacing. We can't see anyway of pulling the crank apart. Is there a special tool for this? Is it a dealer only repair? Please see attached image with the 'offending bearing' marked.
Any help would be appreciated.
Keith Hart
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Hola
The pic it's not very clear in details, some engines uses 2 parts connecting rod secured one to the other with 2 screws at the lower end of the connecting rod assy. Seems in your case it's a one piece connecting rod passed through a internal crank pin with a middle needle bearing that holds together in place crankshhat A to crankshaft B. Your engine has 4 crankshafts. In that case will need a special tool for taking apart crankshafts, when jobs done will need a press to put crankshafts back together. Better do it in a specialized place.
To have a better idea of the crankshaft complete assy. See tech pic. Good luck!
Happy Boating