I have a 1987 yamaha 150 that will not turn over very fast.I now have removed the plugs and have tried to crank it over at first it cranks over fast like it should then it will slow down to the point where it does not turn over at all.I put a socket on the flywheel main nut and it turns over ok.I have even put on a new starter and it still is doing the same thing.Maybe the starter soliniod?<br />Thanks Guys