I have a 1986 Honda fourtrax 350 4x4 with a bad motor a so called mechanic put a 1987 forman motor on it the only difference i can tell is the starter and the pulse generator. He changed the pulse generator to an 86 because of the three wires were it would plug up right. No spark no where all the way to the plug. If you can help me determine what to do and what to check i would really appreciate it. It ran fine when the other motor blew it still had fire but now it doesnt. Thanks.

Dennis