Thanks for the suggestions. I will try them and get back to you. The sheaves still look like new since it has such low miles. And this thing was ridden easy. The clutch kicks in about 4k RPM, but won’t rev above 6k RPM at full throttle under load. Unloaded it revs to 8k RPM easily. But the way it is acting, it seems as if the timing is not advancing. Which is resulting in lack of HP. It reacts like the motor just “bogs” or “plains out” at full throttle. I mentioned that I checked the timing. I did that with a timing light and it seemed to be advancing properly. Which is done electronically, but I am not certain if it is done in the CDI or at the magneto? I am leaning towards an ignition or timing issue only because the other thing I noticed is that the left cylinder plug consistently comes out dry and light, while the right side looks normally wet and tanish. Because of that I initially suspected crank seal (given the age and low miles), but when I pulled the clutch and plate that covers the seal everything looked dry and the ether spray trick didn’t increase engine speed. Thanks again.
Last edited by motomech10; 01-28-2010 at 12:43 AM.