Introduction
Prerequisite only! This guide shows how to remove the belt from the left sprocket on the Toro Walk Behind Mower 21199HD 2018.
Tools
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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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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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To reassemble your device, follow these instructions in reverse order.