Replace the wheel nut and tighten
with the spanner 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.
For the relief grinding stone, use the
u-wrench provided, hold the stone and
unscrew the wheel nut counterclockwise.