On the edge chassis sleds you can slide the Drive axle over enough when you take off the bearing retainer on the speedo side to get the shaft to drop low enough to get the track off. The IQ is a little different. drain oil (plug is under sled), pull exhaust can out. remove cover. careful it is plastic and should have the metal update bracket on it. don't bend it. loosen tensioner and remove chain. remove the bearing retainer on speedo side. speedo is electronic not cable. slide slide drive axle over to exhaust side. slide track off. Not hard to do. reverse to reinstall. set tension per owners manual. (it has a nice picture how to do it). I have done both my 05 switch and my 06 IQRMK. Use 11oz. Polaris synthetic chain oil. On the IQ you have to torque bolts per manual, to not crack chain case cover. Edge has a metal cover. while the cover is off wipe the sludge out of chain case. you can reuse chain case cover gasket.