Replacing the Sprockets

Install the new sprocket on the drive shaft at the same location as old sprocket.

Replacing the Large Sprocket

  1. Remove screws holding base cover to unit and remove.

  2. Using a 1/8 inch Allen wrench, remove outer aluminum wheel and spacer from drive shaft.

  3. Remove master link from chain and remove chain.

  4. Slide drive shaft pit and using a 3/32 inch Allen wrench, loosen set screws and remove large sprocket from drive shaft.

  5. Replace large sprocket and assembly by reversing the instruction above.

Replacing the Small Sprocket

  1. Remove screw holding base cover to unit and remove.

  2. Remove master link from chain and remove chain.

  3. Using a 3/32 inch Allen wrench, loosen set screw and remove small sprocket from motor.

  4. Install new sprocket to motor.