Crank Arm Gap Due to Insufficient Bolt Torque

Verify if the crank fixing bolt is tightened to the manufacturer's specified torque, which is typically 25–30 ft-lb for square taper systems. If the bolt is below this specification, the crank arm may not be fully seated on the spindle. Confirm the state of the connection by checking if the bolt can be tightened further using a torque wrench or if the crank arm exhibits play during the wiggle test.