Use a small drill bit and drill some small holes at the break and use small craft wire to wire on to engine. After you do this use epoxy to coat. The reason you need the wire is because JB Weld will not hold up to the vibrations these engines put out and it will break loose after a while. It takes a little time but will same you about $10 over replaceing with a new one. However, if you have plenty of cash on hand, go for it and dump the $ for a new one.