when you put the engine back in, double chekc everything, make sure all the wires n shit are hooke dup, new oil, fresh mixed gas, fresh coolent, and let it idol for like 10 mins, shut off, and do that 3 times, then do some quarter throttle run, shut down, some half throttle run, shut off, some 3/4 runnin and shut off, and some wot runing and at that time pull in and do a plug test to make sure its runnin ok, then ur off and ready to ride