i have an 06 summit,running under 6200 rpm it bogs down sometimes stalls,once i get over 6200 rpm it takes off and runs great as long as i stay above 6200 rpm.i had put some old(7 years old) 2 cycle oil and 5 month old gas in prior to the ride.thought that was the problem.took out the old oil and put in ams synthetic,and iso prop. in the gas.ran the sled 12 miles,thought that would be enough to get the old stuff run through,but still running the same.also the ride prior to all off this i shredded a belt and put a new one on,don't know if that might be related somehow.any ideas?
