Grizzly Heavy Duty Mill/ G1006 - Manual (Page 32)

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Speed Changes
The Model G1006/G1007 is capable of twelve dif-
ferent speed settings. Different types of cuts and
types of materials require varying speeds. Consult
outside sources for information about appropriate
speeds for different applications.
To change spindle speeds:
1. Loosen the motor locking lever. Pull the
motor inward to move the rear pulley toward
the spindle (Figure 32).
Figure 32. Motor locking lever.
2. Loosen the two idler pulley bolts that hold the
center pulley system in place, so the pulley
will float (Figure 33).
Figure 33. Pulley system.
3. With the center and rear pulleys loose, move
the V-Belts to the position on the pulleys cor-
responding to the desired speed (See chart
below).
4. Push the motor back to tighten the rear V-Belt
and tighten the motor locking lever.
5. Tighten the bolts holding the center pulley in
place.
Motor Locking Lever
Idler Pulley Bolts
Figure 34. Spindle speed chart.