Tomos are definitely out of my realm of knowledge, but I'd like to get this POS A3 running, finally.
Issue: Any turning of the rear wheel engages the motor to turn over. Backwards, or forward.
delaminated clutch pad(s)
I've heard of a one way gear, but as a ZA50 guy, don't have any idea if that's a possibility or not.
Or the sprag clip, which I've heard causes issues, but again have no knowledge of.