DescriptionThis video provides step-by-step repair instructions for replacing the front idler pulley on a Craftsman riding lawn mower. The most common reason for replacing the front idler pulley is when it is damaged, causing the rear wheels not to move.
All of the information for this front idler pulley replacement video is applicable to the following brands:
Craftsman, Husqvarna, Ariens, Poulan, Dixon
Tools needed: small flat-head screwdriver, 9/16 inch socket
Step-By-Step Instructions1
Before you replace the front idler pulley on your riding mower make sure the ignition switch is in the “off” position and the key has been removed.
2
Confirm that the mower deck is at its lowest position and that the clutch actuator lever is in the “off” position.
3
Now remove the retaining pins securing the support arms and detach the arms to release the mower deck from the frame.
4
Next, release the deck belt from the engine pulley and the belt guides.
5
Detach the clutch cable from the retainer.
6
You can now slide the deck out from under the frame.
7
Engage the brake and lift up the hood.
8
Have an assistant insert and hold a small flat-head screwdriver under the frame to secure the front idler pulley mounting bolt.
9
With the bolt secured, you can use a 9/16th inch socket to loosen and unthread the mounting nut.
10
Pull off the old idler pulley and washer.
11
You’re now ready to install the new front idler pulley.
12
Disengage the brake then extend the idler pulley spring and realign the idler arm on the shoulder washer.
13
Slide the pulley washer on the mounting bolt.
14
Now slide on the pulley then rethread and tighten the nut to secure.
15
Pull down on the idler pulley arm to help hold the bolt in place as you tighten the nut.
16
Once the nut is tightened, remove the screwdriver from the frame and lower the hood.
18
Loop the belt around the front and middle idler pulleys in an “s” formation.
19
Disengage the brake and slide the mower deck back under the frame.
20
Secure the clutch cable in the retainer.
21
Realign the deck belt on the engine pulley and the belt guides.
22
Reposition the support arms and secure them using the washers where applicable and the retaining pins.