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Piston dimensions

Smallend

New member
Hi Folks.
I am trying to find a piston that may solve a problem Im having with a friends Yamaha 50hp outboard.
I cant get a Yamaha piston to fit as the block has been over board to 68mm, but I think a standard 50 hp mariner
2 stroke piston may do the job. Piston number 779-96152.
Could anyone point me in the direction of a resource that could give me some dimensional info on this piston?
I need the wrist pin diameter, piston length and the distance from the top of the hole for the wrist pin to the piston crown.
Any help would be gratefully accepted.
Cheers
 
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