It's fairly straight forward and is similar to changing a snowmobile belt.
Remove the inlet and exhaust hoses from the belt cover and remove the belt cover. Be careful not to damage the big o-ring that goes around the cover. Once the cover is off, I like to clean the entire area and inside of the cover. The belt dust is very abrasive, so you don't want to breath it in. I use a hot water spray, or a pressure washer with the pressure turned down. Then it's safe to blow dry the parts and wipe out the cover.
Notice that the belt has printing on it. I always install the belt so you can read the writing. When removing the belt, be sure it goes back on in the same direction.
Put the machine in gear with brake on. Grab the rear sheave and turn and move it apart. Then the belt will lift off and out. Install the new belt in the same manner. It's the same as doing a snowmobile belt. It's easy once you've done it a few times.
Check the belt deflection once the new belt is on. Deflection is changed by adding or removing spaces from the rear clutch.
Be sure to inspect the clutches for any wear. Make sure the cover seal is in good condition. Bolt it back together and you are done. Let me know if you need more help.
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