I Bought this bike in June, it looks to be in good shape, but the
motor is frozen, I was told that it was running when they put it up
in 1986. I hung it up by the neck and have tried mavel oil Ect,
since then, no luck. In order to get new parts, Piston rings ect.
I need to know what model I have. On the bike it say's Yamaha QT, motor 5u9-015415 , On the neck JYA-5u900-ODA015415.
Would this be the same as a QT50 or yamahopper. And does anyone know where I might get a shop manual for this