1982 Sachs 505/1D
Drove around yesterday with no problems but today when I tried to start it up it froze. Peddled along and as soon as i pulled the starting clutch lever the wheel locked up. Immediately thought I had seized the engine so I pulled the flywheel cover off and sure enough it wouldn't turn, low an behold I tapped it with a hammer and it freed up. So I put the cover on and it fired up first try.
What would cause this to happen?
This may or may not be related: the wheel spins at idol on the stand. Folks say the wheel should turn a little but what is a little?
I would appreciate any insight.