Got that gear from mcmaster, but other ones I bought at an industrial salvage place. Pocketbike is dead for the time being, I let by friend ride it, and he crashed into his mom, (lol) but put his leg in such a way that it made the front chain pop off. There's no way to take the primary jackshaft sprocket off, and you can't put the chain over the gears at all, without moving them. So, we had to take the clutch off. To do this you have to lock the motor, usually by sticking a rod in the flywheel to stop the engine from rotating. I told him to do that, and somehow the idiot managed to pop the recoil spring out.
... Anyway- I'm gonna go pick it up tomorrow and see if I can fix it...