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I am wondering if anyone can figure what might have happened. I was given a 1988 15HP Johnson with one of the pistons removed. It looks as though the arm sheared off. Would this have been caused by a seized piston or something with the bearings?

Thanks for your help

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Hello will need to see if top of piston is( melted on exhaust side) then engine had a lean failure. if sides of piston are scored then possible overheat or lack of oil failure. any questions call 631-514-1525 thanks Ralph

Ralph, The Outboard Wizard
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