Some years ago, I was fooling around with an antique lawn boy with a stuck piston. Wouldn’t budge.

Ended up stacking enough fittings together to adapt the spark plug hole to a grease fitting. Grease gun popped it right loose.

Heck of a mess to clean up, but I was surprised how well it worked.

Last edited by JW51; 06/23/2026 12:40 PM.

1951 3100