I have taken two atvs with carbs to Colorado hunting in the last five years. Kawasaki 360 and a Yamaha 400 both ran fine with no rejet at 9000 ft to 9800. I must be lucky. Blew a little oil out the crankcase and rear ends but other than that worked great.

No... I did not take them off the trails just parked them beside the road and walked in. Be sure and mark a waypoint when you park or you might spend a couple of hours trying to find your Atv. don,t ask me how I know!!!!!

Last edited by KentuckyMountainMan; 07/26/14.
“When you eliminate the impossible, whatever remains, however improbable, must be the truth.”