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Drive Belt Installation for Bikes & Ellipticals

The drive belt is used by the flywheel within the mechanical system to provide a braking resistance for the machine. A drive pulley is mounted on the flywheel and a generator or alternator or braking system contains an additional pulley. In some designs, a idler pulley is used to tension the drive belt.

Steps to Replace Drive Belt

  1. 1. Using a crescent or box end wrench, remove the right pedal or shaft. In some instances, you may need to use a gear puller in order to remove the pedal or shaft. These are common and can be borrowed from many AutoZone stores if you don?t have one.
  2. 2. Remove and save the screws from the right side shield.
  3. 3. Rotate the right crank arm until it points directly forward.
  4. 4. Remove the right side shield by sliding the side shield over the right crank arm at an angle, being careful not to scratch or stress-mark the plastic side shield.
  5. 5. Detach the idler pulley spring from the idler spring bracket if your machine is equipped with an idler pulley.
  6. 6. Remove the poly-v drive belt from the large pulley and the generator/alternator/braking pulley. Discard the old poly-v drive belt.
  7. 7. Install new poly-v drive belt around the pulleys and the generator/alternator/braking pulley. Make sure the idler pulley contacts the outside (smooth side) of the belt if your machine is equipped with an idler pulley.
  8. 8. Reattach the idler spring if your machine is equipped with an idler pulley.
  9. 9. Temporarily attach the right pedal or shaft and test the drive system for proper belt alignment and tension.
  10. 10. Reinstall the right side shield, reversing the method described in Step 4.
  11. 11. Reinstall side shield screws and right pedal saved from Steps 1 and 2.
  12. 12. Test machine for proper operation.