Reply To: Johnson S45 – Stuck – Which Piston to tap?

[Mumbles]

As mentioned, don’t reef on the flywheel nut or you chance breaking the end of the crankshaft off or splitting the flywheel. Try using a strap wrench instead on the flywheel itself.

If both cylinders could be unbolted from the crankcase and the crankshaft can be turned, you might be able to undo the rod caps and then be able to remove each cylinder along with its piston. This way you could put it in a press and coax the pistons to move easier than trying to get both of them to move together while completely assembled.