How to Adjust the Belt Tensioner of the Troy-Bilt Self-Propelled Lawnmower


If you are having trouble pushing and controlling the speed of your Troy-Bilt self-propelled lawn mower, then there is most likely a problem with your drive belt, located directly at the bottom of the mower. Before you assume that the belt is broken, you should consider adjusting the tension on the belt using the belt tensioner part located above the belt holder rod. If tightening or loosening the tension doesn't solve the problem, then you might need to remove the entire belt to inspect it for damage.

Things You'll Need

  • Phillips screwdriver
  • Allen wrench
  • Turn your Troy-Bilt self-propelled lawn mower onto its side, then lower the deck lift lever from the right side of the mower.

  • Locate the belt underneath the mower, then remove the belt guard screws using a Phillips screwdriver.

  • Pull out the belt holder rod with your hand, then you will be able to access the belt tensioner, which is medium-sized metal bolt beside the belt with a square-shaped hole in it.

  • Insert an Allen wrench into the square hold of the belt tensioner. Turn the wrench clockwise to tighten the belt tension.

  • Turn the wrench counter-clockwise to loosen the tension of the belt. Place the belt holder rod back over the belt once you have reached the desired tension for your belt.

  • Reinsert the belt guard screws to the belt holder, then place your back into the upright position.

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