Originally Posted by ran49
If I may throw another question out there while we're on the subject.I just removed the head on my 70cc boy go fast with about 1100 mi. on it.Rings and cylinder wall look new,but top of cylinder and head have about 1/64" or less burnt crud on them.Too rich or normal? How do you clean that off.Thanks,Ron
Normal buildup of burned oil Ron. Carb cleaner and a wire brush will clean it.