1981 QT50

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New to the forum here. Just recieved an '81 Yamahopper from my uncle. Seems motor is locked and needs some TLC. I heard these are 2 stroke engines but, I notice an oil fill plug on the crankcase... Should I start by putting it on end and letting some WD40 soak in for a bit to free it up? 
Thanks,
Tonka

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tonka329 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: August/29/2012 Location: Limestone, Illi Status: Offline Points: 3	Post Options Post Reply Quote tonka329 Thanks(0) Quote Reply Topic: 1981 QT50 Posted: August/29/2012 at 1:38am
	New to the forum here. Just recieved an '81 Yamahopper from my uncle. Seems motor is locked and needs some TLC. I heard these are 2 stroke engines but, I notice an oil fill plug on the crankcase... Should I start by putting it on end and letting some WD40 soak in for a bit to free it up? Thanks, Tonka

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donp Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Master Regional Rider Joined: October/27/2003 Status: Offline Points: 8558	Post Options Post Reply Quote donp Thanks(0) Quote Reply Posted: August/29/2012 at 6:21am
	depends on what is froze up. could be the piston, or something in the crankcase. fill oil up to full mark and try turning the flywheel.

tonka329 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: August/29/2012 Location: Limestone, Illi Status: Offline Points: 3	Post Options Post Reply Quote tonka329 Thanks(0) Quote Reply Posted: August/29/2012 at 9:31am
	Thanks Don! I'll give that a try 1st...