Greetings to everyone.. Well I don't know if I'm on the right forum, but besides the chainsaws I own I recently was given a lawn tractor which a customer gave me in exchange for a job I did for him ( LAST TIME I DO THAT)Yes this is a guy I work with so I can't be too pissed. The tractor is a Troy Bilt LTX 1842 OHV. Briggs Intek 18 hp.The problem is that the engines flywheel moves 180 deg. but then stops. I expect that a retaining pin or clip has come off from the crank and only the piston will move until it hits the crank. Any input would be greatly appreciated before I open the case up. I've repaired a few blown chainsaws but this 4 stroker is a little above my head. Thanks in advance. Any direction would be great thank you.