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How to Change the Drive Belt on a 2008 Super Bronco Troy Bilt Lawnmower

The Troy Bilt Super Bronco is a 42-inch riding lawn tractor suitable for mowing residential properties up to 1.5 acres. Driven by a 20-inch Kohler engine, the Super Bronco features a side-discharge mowing deck with five height adjustments. A single deck V-belt drives all cutting functions. It should be replaced if signs of excessive wear are apparent. Replace the Super Bronco drive belt with a Troy Bilt OEM replacement only.

Things You'll Need

  • Screwdriver
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Instructions

    • 1

      Turn off the engine, and remove the ignition key.

    • 2

      Unscrew the single self-tapping screw that secures the belt-keeper rod around the engine pulley on the front of the engine. Remove the belt-keeper rod.

    • 3

      Take the drive belt off the engine pulley and the idler pulleys.

    • 4

      Place the PTO control in the "Off" position.

    • 5

      Move the deck lift lever located on the right fender to the bottom notch.

    • 6

      Take out the clip that holds the PTO cable to the back side of the cutting deck.

    • 7

      Pull out the left deck support pin on the rear-left side of the tractor.

    • 8

      Pull out the right deck support pin on the rear-right side of the tractor.

    • 9

      Raise the deck lift arms by moving the deck lift lever into the top notch.

    • 10

      Push the cutting deck forward, disengaging the deck hooks from the deck stabilizer rod.

    • 11

      Move to the left side of the tractor, and gently pull the cutting deck from underneath it.

    • 12

      Take out the self-tapping screws that retain the left and right belt guards, and remove the belt guards.

    • 13

      Loosen the deck idler pulleys, but do not remove them.

    • 14

      Remove the drive belt from around all pulleys.

    • 15

      Install the new belt into all pulleys. Consult the manufacturer's belt routing diagram, if necessary.

    • 16

      Replace the belt guards. Mount the deck to the tractor.

    • 17

      Place the belt around the engine pulley, and install the belt keeper rod.

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