Home › Forum › Ask A Member › 1958 Johnson 10 hp- worthy for resto? › Re: 1958 Johnson 10 hp- worthy for resto?

#73641
frankr
Participant

    I suggest you check it for battered-out wrist pins before putting money into it. Easy to do, remove plugs, stick a screwdriver into a plug hole, rotate flywheel while you follow the piston down with screwdriver (DONT push). Stop rotating flywheel when piston is about half way down. Now give a push on screwdriver. Any clunk you get is wrist pin wear. The more clunk, the more wear. Repeat with other piston.

    I say all this because wrist pin wear is common on those motors. Actually, it is wear in the wrist pin bore in the pistons. Improved parts are available beginning with 1961 models. (Can retrofit)