H
I have a buddy that is having trouble with his 600 XC. Not exactly a mountain sled, but with the great wrenches that surf this sight I have to ask. There are 4300 miles on the machine. Currently the sled runs one one cylinder at idle. Evidently if he gets on the throttle it runs just fine. Just acts up in the lower RPM range. I took the carbs off last night and the seam clean as a whistle. Plugs are brand new and providing good spark. He took the reeds out and they also look good. We are stumped and looking for answers. Can anyone provide some items to check?