If the pulley covers on your mower deck are secured with a screw, follow this procedure for replacing the mower belt.
The signs of a worn belt include squealing while the belt is rotating, blades slipping while cutting grass, and frayed edges, burn marks, and cracks on the belt. Replace the mower belt if any of these conditions are evident.
Park the machine on a level surface, disengage the blade-control switch, and move the motion-control levers outward to the PARK position.
Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.
Set the height of cut at the lowest cutting position (38 mm (1-1/2 inches).
Loosen the screw and push in the tab on the cover to remove the pulley covers (Figure 1).
The spring is under tension when installed and can cause personal injury.
Be careful when removing the belt.
Install the pulley covers and secure them with the screws.