Place the new stone on the hub.
Replace the wheel nut and tighten
with the u-wrench provided. Do not over-
tighten as you may damage the stone.
You may remove the hub assembly and
mount it carefully in a vise for tightening.
WARNING-Do not overtighten. You will
damage the stone. Use extra caution when
turning the grinding motor on and off the
first few times after you have mounted the
stone. If the nut is not tight enough, it and
the stone may come off when you turn the
motor off.
Disengage the grinding head.