How to replace a riding lawn mower blade drive belt

Park the tractor on a level surface and set the parking brake.

Turn the ignition switch off and remove the key.

Wear work gloves to protect your hands.

Lift the tractor hood and disconnect the spark plug wire.

Lower the mower deck to its lowest position.

Disengage the cutting blades.

Roll the blade belt off the engine pulley and release the belt from the belt keepers.

Remove the front lift link support retaining pin and washer, and then detach the support from the deck.

Remove the left suspension arm retaining clip and washer. Then detach the arm from the tractor frame.

Remove the left rear deck bracket retaining clip and washer. Then release the bracket from the deck.

Repeat the process on the other side of the deck to disconnect the right suspension arm and right rear deck bracket.

Pull the deck out far enough to access the blade drive belt.

If the belt is still intact, note the routing of the blade belt through the pulleys and belt keepers.

If the belt is broken, refer to the belt routing sticker on the deck or your owner's manual for guidance.

Release the belt from the idler pulleys, belt keepers and mandrel pulleys.

Pull the belt off the mower deck.

Loop the new belt around both mandrel pulleys.

Route the belt through the idler pulleys and belt keepers.

Push the deck under the tractor frame.

Reconnect the front lift link support to the deck with the washer and retaining clip.

Reconnect the left suspension arm and deck bracket with the washers and retaining clips.

Repeat the process to reconnect the right suspension arm and deck bracket.

Route the blade belt through the belt keepers and roll the blade belt onto the engine pulley.

Reconnect the spark plug wire and lower the tractor hood.