How to Replace a 42 Deck Belt on a Yardmaster Lawn Mower
- 1). Shut off your Yardmaster rider. Pull the deck lever to the highest setting.
- 2). Locate the main drive pulley fastened under the rider's engine. The belt around this pulley is held into place with three belt keeper pins screwed into the base of the rider frame.
- 3). Unscrew the three belt keeper pins with the correct sized wrench. Pull the belt off of the pulley.
- 4). Push the deck lever to the lowest setting.
- 5). Remove the 42-inch deck's pulley covers from the top of the mower deck. Each pulley cover is bolted down over the pulleys with four bolts. Unscrew all the bolts with the proper wrench sizes.
- 6). Slide the old belt off of the pulleys. Slide the new belt around the pulleys and make sure the "V" side of the belt is facing toward the pulley.
- 7). Tighten the pulley covers back on the top of the mower deck.
- 8). Pull the deck lever to the highest setting.
- 9). Slide the belt around the main drive pulley under the engine. Tighten in the three belt keeper pins around the belt.
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