I just recently pulled the bike apart and upon completion I tried to start it and it would not fire. During the rebuild I also replaced the flywheel with the weighted GYTR model. I proceeded to check the plug to see if I had spark and sure enough there was none. I also checked a few different spark plugs and ended up with the same result. I went to the manual and did all the checks that it had and all the parts that are on that circuit, and they look to be good. I am at a loss right now so any help would be greatly appreciated.