How to replace the Pulley Block
Here is a quick guide to properly replacing the pulley block on the stepper.
(Tools required: Adjustable Wrench & Allen Wrench)
STEP 1: Use an Allen wrench and adjustable wrench to loosen the nuts and bolts (counterclockwise) that secure the stepper cable on both sides of the stepper.
STEP 2: Twist the Adjustment Knob (part#11) counterclockwise until it is removed from the frame. Afterward, remove the Cable (part#22) and Pulley (part#9).
STEP 3: Unscrew the bolt that holds the Pulley (part#9) onto the Pulley Block (part#31) to remove it. Attach the same Pulley (part#9) onto the replacement Pulley Block (part#31).
STEP 4: Install the replacement Pulley Block (part#31) onto the frame, along with the Cable (part#9) and Adjustment Knob (part#11).
STEP 5: Reinstall the nuts, bolts, and cable to both sides of the frame of the stepper with the Allen wrench.
STEP 6: Use the adjustable wrench to tighten both bolts clockwise.
For more information, please see the video below: