Toro Walk Behind Mowers 21199HD 2018 Right 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.

Lift the belt up and over the left sprocket.

Move the belt to the front of the mower, out of the way of the belt tensioner.

Spin the left sprocket, with the blade attached underneath, until it is in a safe position, then place the belt on the sprocket.

Spin both blades to ensure they don't touch during a 360˚ rotation.

Use a 1/2 inch socket with a 1/2 inch wrench to remove the tensioner bolt and nut.

Remove the tensioner adjustment nut, bolt, and flange.

Use a 1/2 inch socket to remove the two black tensioner bracket bolts.

Remove the belt tensioner assembly.

Remove the pulley plug cap.

Use a 1/2 inch socket to remove the right pulley nut on the underside of the tensioner bracket.

Remove the pulley from the tensioner bracket.

Remove the pulley bolt and washer.

Remove the bushing from the pulley.