Poulan Pro PR621 Owner's Manual page 16

Replacing the Drive Belt
If drive belt becomes worn, oil-soaked, excessively
cracked, frayed, or otherwise damaged, replace the belt.
1. Remove the drive side cover by removing the six screws
as shown in (Figure 30).
5
6
4
3
Figure 30
1. Drive side cover
2. Screw
3. Drive pulley
4. Idler arm
2. Press down on front of idler arm to release the belt
tension (Figure 30).
3. Remove the drive belt from the drive pulley (Figure 30).
7
1
2
5. Idler pulley
6. Engine pulley
7. Drive belt
4. Install the new drive belt, routing it as shown in
(Figure 31).
NOTE: Route the new drive belt first around the engine
pulley, then the idler pulley, and finally around the drive
pulley while pressing down on the front of the idler arm.
(Figure 31).
5. Install the drive side cover with the screws removed in
step 1.
2
4
1. Idler arm
2. Idler pulley
3. Engine pulley
4. Drive pulley
NOTE: Ensure that the drive belt is properly adjusted
and operating; refer to Checking the Control Cable and
Adjusting the Control Cable in the Maintenance section
of this manual.
16
3
2
1
Figure 31