Using a lawn tractor or riding mower to cut your large lawn is an efficient and practical way to keep your lawn looking pristine. The performance of the mower can be compromised by a worn drive belt, which will slow uphill performance and the rotation of the cutting blades. Replacing the belt after 100 hours of operation will keep your Murray mower functional. Keeping the deck clear of grass and debris can help prolong the life of the belt.
Park the Murray mower on a flat surface and place the transmission in "park."
Place the blade rotation control to the disengage position. Raise the lift lever to the adjustment position, making sure it clicks into place securely.
Remove the hairpins and washers from the adjustment arms and suspension links by hand.
Remove the extension springs and disconnect the front hanger.
Pull the drive belt from the stack pulley and slide the mower base away from the tractor.
Loosen the guide bolts with a wrench on the idler pulley and remove the pulley.
Disconnect and remove the battery to gain access to the drive belt guides.
Loosen the belt guides by hand near the drive pulley.
Remove the belt from the shifter bracket.
Position the new drive belt around the shifter bracket, wrapping it around the pulley in the same direction the old belt was removed. Place the flat side of the belt against the pulleys.
Reattach the mower deck by reversing the removal procedure.