Reply To: Seized motor piston rings

[Don]

Yeah, if it is tough to turn over, chances are there are internal issues… You can try to loosen it up, but you may cause more damage by trying to run it that way. Pull the two intake bypass covers to have a better look at the pistons and rings. You can pull the intake manifold to have a look at the crank/rod/bearings.
Have you drained the gear lube? I suppose it is possible that the gearcase is jammed up also causing it to bind while rotating…