How to Install an ATV Chain Adjuster

When an ATV is operated on rough terrain, the rear end pivots and sways with the movement of the rear suspension. Since the rear sprocket is moving around in relation to the drive sprocket in front, it is easy to knock the drive chain off the rear sprocket, putting a premature end to your ride. This can be prevented by installing a chain adjuster or tensioner, which allows you to put more tension on the chain and make it less likely to slip off the sprocket.

Things You'll Need

  • Socket wrench or nut driver
  • Pencil or chalk
  • Drill
  • Welder or cold weld compound
  • Large screwdriver
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Instructions

    • 1

      Remove the roller from the chain adjuster by removing the center nut using a socket wrench or nut driver.

    • 2

      Remove the chain guard from the ATV according to the instructions in your owner's manual.

    • 3

      Hold the chain adjuster flush against the swingarm of the ATV just in front of the rear sprocket. Mark the location of the bolt hole using a pencil or chalk.

    • 4

      Drill a hole slightly larger than the bolt supplied with the chain adjuster through the swingarm at the spot you marked. Attach the chain adjuster to the swingarm and snug the bolt down tightly.

    • 5

      Weld the top edge of the chain adjuster bracket to the swingarm using a welding rig or a small bead of cold welding compound.

    • 6

      Use a large screwdriver as a lever to pull the chain adjuster arm below the drive chain. Keep the chain adjuster arm retracted and replace the roller on the chain adjuster axle, tightening the center nut with a socket wrench or nut driver.