Place the Husqvarna onto level ground and lower the mower suspension arms with the attachment lift control lever. Set the parking brake.
Disengage the mower deck to stop the rotation of the mower blades and to increase slack on the mower deck drive belt.
Locate the clutch pulley extending from the bottom of the mower's engine and then pull the belt off the pulley. The belt is a V-groove belt. To help get the belt off the pulley, manually rotate the pulley while you pull down on the belt.
Remove the pulley covers mounted on the left and right ends of the belt with a wrench.
Remove the belt from the pulleys on the Husqvarna belt. Place the new belt onto the pulleys.
Place the pulley covers onto the mower deck. Secure them both with the wrench.
Stretch the belt forward and place it over the clutch pulley. Again, rotate the pulley while you push the belt onto the pulley.