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This guide shows how to remove and replace the right belt pulley on the Toro Walk Behind Mower 21199HD 2018.
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Grab the plastic housing at the end of the spark plug wire and pull firmly to disconnect it.
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Chock the rear wheels to prevent the mower from rolling during service.
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Lift up the plastic deflector.
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While holding the deflector up and out of the way, lift the grass bag handle away from the mower to detach it.
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Remove the grass bag.
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Use a 3/8-inch socket to remove the four bolts securing the belt guard:
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Three 1 inch-long recessed bolts
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One 1 1/2 inch-long bolt
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Pull the belt guard straight off the front of the mower to remove it.
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Loosen, but don't remove, the belt tensioner to give the belt some slack.
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Use a flathead screwdriver to pry off the plastic plug cap.
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Remove the plug cap.
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Use a 3/8 inch socket to remove the four bolts securing the upper belt guide to the pulley.
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Remove the upper belt guide from the pulley.
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Use a 1/2 inch socket to remove the left pulley bolt
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Remove the left pulley.
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Remove the bushing from the pulley.
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Lift the belt up and over the left sprocket.
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Move the belt to the front of the mower, out of the way of the belt tensioner.
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Spin the left sprocket, with the blade attached underneath, until it is in a safe position, then place the belt on the sprocket.
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Spin both blades to ensure they don't touch during a 360˚ rotation.
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Use a 1/2 inch socket with a 1/2 inch wrench to remove the tensioner bolt and nut.
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Remove the tensioner adjustment nut, bolt, and flange.
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Use a 1/2 inch socket to remove the two black tensioner bracket bolts.
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Remove the pulley plug cap.
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Use a 1/2 inch socket to remove the right pulley nut on the underside of the tensioner bracket.
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Remove the pulley from the tensioner bracket.
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Remove the pulley bolt and washer.
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Remove the bushing from the pulley.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
