This can only be done properly when the wheel is in the machine. If the adjustment is lost, it is best to slacken left hand thread adjusting nut KS9 on the opposite side to brake. Turn clockwise after loosening the spindle nut on the same side. See that spindle nut on brake side is tight to hold wheel in position. Now adjust by means of the left hand adjusting nut and leave a perceptible shake in wheel, then tighten up the outer spindle nut.
Should the wheel refuse to slacken off, a smart blow on the adjusting end of the spindle will usually free the cone on the spindle. It is advisable, while doing this, to press the wheel in the opposite direction that is, push on the rim of the wheel on the brake side.