1. Using the special tool, loosen the lock nut and use the open-end wrench to adjust the guide rack screw to set the standard angle. Using the TORX key, tighten the guide rack screw to 5 N·m (0.5 kg·m), loosen the screw, and then tighten it again to 5 N·m (0.5 kg·m).
2. Using a spanner, loosen the guide rail screw to the standard angle.

- Standard return angle: no more than 25+0-5
3. Using a spanner, secure the guide rail screw and tighten the lock nut using a TORX key and a special tool.
When tightening a lock nut using a special tool, there is a difference between the tightening force reading of the TORX key and the actual force. Measure the tightening force as follows.

Calculation formula: Force read from TORX key = [Effective length of TORX key (m) x Required tightening force (N m (kg m))]/(Effective length of TORX key (m) + 0.15 (m))
Calculation example: [0.345 (m) x 67 N·m (6.8 kg·m)] / (0.345 (m) + 0.15 (m)) = 46 N·m (4.7 kg·m)
