Originally Posted by bikeguy joe
you can use a regular one speed bicycle chain as an emergency replacement, buy two at walmart, and you should have enough chain to replace your drive chain until you get a master link.
a one speed bicycle chain is to narrow to fit some of the 66 cc engine models 10 tooth drive sprokets. A good bike shop, which services bmx should have a 415 master link. That is where i got mine. When you install it make sure the closed end points to the engine when on top (the open end is toward the rear sproket). I made that mistake and the open end hit the bolt on my chain guard and the master came right out on the ground, chain and all!rick