When the drive belt on your Murray self-propelled mower begins to wear out, the drive system may start to fail, which can cause the drive belt to slide out of the drive pulley. When this happens, you must repair the drive belt that is used for the auto-propulsion function of the mower. You can repair the propel belt in a Murray lawn mower by removing the old transmission belt and installing a new one.
Instructions
1 Locate the spark plug wire, and unplug it from the spark plug.
2 Remove the screw used to secure the mower strap cover with a screwdriver. Take the belt cover out of the mower.
3 loosen the belt tension bolt with the socket wrench. The belt tension Bolt is located next to the wheel adjustment lever on the front left side of the machine.
4 Pull the front of the drive belt out of the drive pulley located on the top of the motor.
5 Tilt the mower over the side, and pull the back of the drive belt over the mower blade.
6 Insert the back of the new drive belt over the mower blade, and place the front of the belt over the drive pulley.
7 Tighten belt tension bolt with socket wrench.
8 Locate the adjusting nut located on the bottom of the lawnmower near the belt tension bolt.
9 Tighten the nut with the wrench until it touches the spacer, and slightly loosen the nut so that the spacer can rotate.
10 Place the cover strap on the lawn mower and secure it with the screw.
11 Reconnect the spark plug wire to the spark plug.
Tips and warnings
A new drive belt can be found in a tractor shop or directly from the manufacturer.
If the spark plug wire is not disconnected, the mower could be accidentally started.