Put some KROIL in each cylinder and let it sit for a week.
Do it again.
Then try. If you aren't concerned with it too much. Tow it (slowly) and drop the clutch a few times.
If that don't work either. Yank the engine. It's stuck and/or broke or will be if you keep it up.
I was taking a little liberty with that statement. WHat I would rephrase it to say is;
If your engine is too stuck to get loose fairly easy with KROIL (or other), Then I would resort to pulling the head off to clean up the cylinder walls at a minimum. If it is stuck that bad, I think the probability of bending, breaking or just creating a big oil burning engine is quite likely.
