I wrote about this a month ago and thought I solved the problem, not. My quad is not operating at full power. I checked the plugs and it was firing on both. I finally adjusted the throttle cable to the recommended 1'8" of play (as it had loosened up on me) and I returned to full power. I rode about 20 miles and when I popped out of a small mudhole it went back to the problem. The machine idles at 1180, and seems to run just fine. When I hit the gas it is as if I'm only at 60% power. I don't think it's the clutch slipping because it is just lacking rpm's. Could this be a stretched throttle cable? I cranked down the cable as much as it would go (engaging the cluch) just to see if this was the prob - it acted the same. It tops out at 40 mph and has no nuts. When it hits around 15-20 mph I here a small screech/whine coming from the front of the machine - almost a vibration noise. Any advice would be great as I cannot afford to go to the dealer right now.......Thanks.

 

Check that front clutch bushing has not slipped out towards front of clutch hitting spyder. Had one do this last week. Plus check that white plastic slotted jam nut undeneath cover and spring hasnt backed off,can limit also. Good luck