DescriptionThis video provides step-by-step repair instructions for replacing the rear idler pulley on a Craftsman riding lawn mower. The most common reason for replacing the rear idler pulley is when the rear wheels won’t move.
All of the information for this rear idler pulley replacement video is applicable to the following brands:
Craftsman, Husqvarna, Ariens, Dixon
Tools needed: 9/16 inch socket
Step-By-Step Instructions1
Before you replace the rear idler pulley on your riding mower…
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...make sure the ignition switch is in the “off” position and the key has been removed.
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Confirm that the mower deck is at its lowest position…
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…and that the clutch actuator lever is in the “off” position.
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Now remove the retaining pins securing the support arms and detach the arms to release the mower deck from the frame.
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Next, release the deck belt from the engine pulley and the belt guides.
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Detach the clutch cable from the retainer.
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You can now slide the deck out from under the frame.
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Hold the rear idler pulley mounting bolt in place…
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…and use a 9/16th inch socket to loosen and unthread the mounting nut.
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With the nut unthreaded, remove the old pulley and the belt guide.
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Before you install the new rear idler pulley…
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…realign the belt guide on the mounting bolt.
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Now slide on the new pulley.
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Hold the bolt in place…
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…as you rethread the nut.
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Make sure to secure the belt guide in the frame before you tighten the nut.
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Now position the drive belt between the belt guide and the new pulley.
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…and slide the mower deck back under the frame.
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Secure the clutch cable in the retainer.
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Realign the deck belt on the engine pulley and the belt guides.
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Reposition the support arms…
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…and secure them using the washers where applicable and the retaining pins.