Idler Stop Kit

1. Park the machine on a level surface.

2. Engage the parking brake.

3. Lower the attachment.

4. Shut off the engine and remove the key.

5. Remove the cutting unit from the traction unit; refer to the traction unit Operator’s Manual.

1. Remove the belt cover (Figure 1) from the top of the cutting unit and set the cover aside.

   

   Figure 1

   1. Belt cover

2. Using a socket wrench or similar tool, move the idler pulley (Figure 2) away from the drive belt to release the belt tension and allow the belt to slip off the idler pulley.

   Caution

   The spring is under heavy load and can cause personal injury.

   Be careful when removing tension from the torsion spring of the idler arm.

   

   Figure 2

   1. Idler pulley

3. Remove the carriage bolts and nuts that secure the tensioner assembly to the cutting unit (Figure 3).

   

   Figure 3

   1. Nuts
   2. Carriage bolts

4. Secure the idler assembly in a vise by clamping on the idler pivot plate.

5. Remove the shoulder bolt from the idler pivot plate then unload the idler spring tension (Figure 4).

   

   Figure 4

   1. Retaining ring
   2. Idler arm and spring
   3. Washer
   4. Idler pivot plate
   5. Nut
   6. Shoulder bolt

6. Remove the retaining ring that retains the idler arm to the idler pivot (Figure 4).

Parts needed for this procedure:

1. Use 2 flange nuts (5/16 inch) to secure the hex bolt to the new idler pivot assembly (Figure 5).

   

   Figure 5

   1. Hex bolt
   2. Flange nuts (5/16 inch)
   3. Shoulder bolt
   4. Flange nut (3/8 inch)

2. Use the retaining ring to secure the idler arm and spring to the idler pivot.

3. Secure the idler assembly in a vise by clamping on the idler pivot plate.

4. Use a 3/8-inch or 1/2-inch drive ratchet or breaker bar in the idler arm to move the idler arm (load the torsion spring) enough to install the shoulder bolt.

5. Install a flange nut (3/8 inch) and a shoulder bolt to the idler pivot plate (Figure 5).

   Tighten the nut to 45 to 55 N·m (33 to 41 ft-lb) and release the idler arm.

6. Use 2 carriage bolts (3/8 x 1 inch), 2 carriage bolts (3/8 x 1-1/4 inches), and 4 flange nuts (3/8 inch) to secure the tensioner assembly to the cutting unit (Figure 6).

   

   Figure 6

   1. Nuts
   2. Carriage bolt (3/8 x 1 inch)
   3. Carriage bolt (3/8 x 1-1/4 inches)

7. Install the drive belt around the idler pulley (Figure 7).

   

   Figure 7

   1. Idler pulley

8. Install the belt cover.