Model # XXXXX
See attached link. Does this look like the drive system on your unit?
Ok, remember your model number as 13AN77TG766. Take the mower deck off. You will then need to remove the pulley from the bottom of the engine. Here is the process for the rest of the removal.CHANGING THE TRANSMISSION DRIVE BELT(S)All belts on your tractor are subject to wear and should be replaced if any signs of cracking, shredding orrotting are present.IMPORTANT: The V-belts found on your tractor are specially designed to engage and disengage safely. Asubstitute (non-OEM) V-belt can be dangerous by not disengaging completely. For a proper working machine,use factory approved belts.To change or replace the drive belt(s) on your tractor, proceed as follows:NOTE: It's recommended that both drive belts be replaced at the same time.
IMPORTANT: When removing the battery, disconnect the NEGATIVE (Black) wire from it's terminal first,followed by the POSITIVE (Red) wire. Re-install in reverse order.Upper Drive Belt
tension on the upper drive belt.
NOTE: Slowly rotate the pulley counterclockwise to roll the belt off of it.
Lower Drive BeltNOTE: Proper removal of the lower drive belt requires special tools and the removal of several tractorcomponents. Read through the following procedure prior to attempting it to determine if you feel you couldsuccessfully complete it. If you don't, see an authorized MTD service dealer to have the belt changed.IMPORTANT: Note the routing of the lower drive belt around both the pulleys and the belt keepersBEFORE performing the following steps.
second wrench to hold the hex nut on the bottom side of the pulley.