Toro Walk Behind Mowers 21199HD 2018 Left Belt Pulley Replacement

Grab the plastic housing at the end of the spark plug wire and pull firmly to disconnect it.

Chock the rear wheels to prevent the mower from rolling during service.

Lift up the plastic deflector.

While holding the deflector up and out of the way, lift the grass bag handle away from the mower to detach it.

Remove the grass bag.

Use a 3/8-inch socket to remove the four bolts securing the belt guard:

Three 1 inch-long recessed bolts

One 1 1/2 inch-long bolt

Pull the belt guard straight off the front of the mower to remove it.

Loosen, but don't remove, the belt tensioner to give the belt some slack.

Use a flathead screwdriver to pry off the plastic plug cap.

Remove the plug cap.

Use a 3/8 inch socket to remove the four bolts securing the upper belt guide to the pulley.

Remove the upper belt guide from the pulley.

Use a 1/2 inch socket to remove the left pulley bolt

Remove the pulley bolt and washer.

Remove the left pulley.

Remove the bushing from the pulley.