Insert & turn key to unlock and separate inner section from outer main body. Loosen the grub screws using the allen key and remove the hexagonal key mounted on the inside of the inner section. Fit the inner section (grub screw end forward) over a corner steady bolt head and securely engage by re-tightening the grub screws. Use the hexagonal key to raise and lower the corner steady as necessary. When correct position is attained remove the hexagonal key. Fit the outer main body onto the inner section and lock into position by turning the key. The outer main body now freely rotates. To unlock, grip the outer main body before turning the key.
Fit protective cap to outer main body to help prevent ingress of dirt or water. Thereafter spray moving parts with a light oil such as WD-40 or equivalent every sixteen weeks.