Alko Coupling Ball Adjuster Screw: Get Precise Adjustments for Your Coupling Ball

Description In order to adjust the ball adjustment screw, the coupling must first be fitted to the tow ball. The 21mm locking nut should first be loosened by turning anticlockwise. Using a large flat head screwdriver, the adjustment screw should then be turned clockwise until contact is made with the ball. Only very light contact should be made; otherwise, premature wear may occur. Tighten the locking nut to ensure the adjustment of the screw does not change.