Home Forums 2-Cycle Racing Comer k80 not reaching max rpm Reply To: Comer k80 not reaching max rpm

Gary Lawson

if you were getting considerably more rpm with everything identical but the motor and it’s getting full throttle then it’s likely carburetion or and internal engine issue like stuck ring.

BUT the first thing I would do is check and make sure the clutch has the right gear on it. It’s a common problem I see all the time when swapping engines and forgetting to make sure it has the same clutch gear. If that’s not it and putting the carb off the previous engine on doesn’t work then send it back to the original builder and tell him it has a severe issue he needs to figure out.