motor problems

I don't have many knowledges about engines. But here is my advice. Go to a service if you don't have knowledges too because if you try to repair for yourself and you will not repair you only could destroy the engine. Good luck !

It sounds like a short in the wire causing surges thru the line thus disrupting the breaker.I presume you have checked the connector first. Good luck with this and I hope someone who knows more about this will help you.

dirt or broken wire