Tighten the Crank Fixing Bolt to Specified Torque

Follow these steps to ensure the crank arm is correctly seated on the spindle:

1. Ensure the bicycle is securely placed in a stand or on a stable surface.
2. Locate the crank fixing bolt at the center of the crank arm (typically accessed via an 8mm hex wrench).
3. Use a calibrated torque wrench fitted with the appropriate hex bit.
4. Tighten the bolt to the manufacturer's specified torque range of 25–30 ft-lb.
5. Once the target torque is reached, perform a wiggle test by grasping the crank arm and attempting to move it laterally against the frame to confirm the play is eliminated.
6. Ensure the crank rotates smoothly without grinding or resistance.

Safety Precaution: Do not exceed 30 ft-lb, as excessive force can damage the internal threads of the spindle or the crank arm interface.