8. Remove The Countershaft SprocketLock Washer

When changing the chain and sprockets, start by freeing up the countershaft sprocket while you still have a way to lock it down. Countershaft sprockets are usually secured one of three ways: a pair of bolts securing a plate to the sprocket, a big clip that slips into a groove in the countershaft itself, or a really big nut. For the pair of bolts, simply put the engine in gear, press on the brake pedal, and unbolt them. Follow the first two steps for the clip, but slip it off with a flathead screwdriver instead. The really big nut provides the biggest challenge. Using a punch or big flathead screwdriver bend the tabs on the lock washer that have been folded against the flats of the nut.

Since the nut was torqued to at least 65 foot-pounds and may have thread lock on it, you’ll need to secure the rear wheel before you attempt to break the nut free. Slip a piece of pipe or 2×4 through the rear wheel just above the swingarm. Now, when you muscle the nut free, the wood will keep the wheel, chain and sprocket from moving.