My neighbor had one of those. Thing was siezed up tight and given to him. He let it sit with oil in the cylanders and tried the kicker every day. One day it broke loose. Trouble was it was in his living room and shot dirty oil all over the walls and cieling!! But after that he rode that for years with no work done to it. No rings or anything.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!