Grizzly G9901 Owner's Manual page 36

3.
Loosen both motor locking handles shown in
Figure 34.
Motor Positioning Handle
Motor Locking Handles
Figure 34. Model G9901/G9902 motor
positioning controls (shown from rear of motor).
4. Use the motor positioning handle (Figure 34)
to pull the motor forward and release the V-
belt tension.
5. Use the V-belt positions shown in Figure 35
to set your mill to the correct RPM.
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Figure 35. Model G9901/G9902 V-belt
positioning for desired speed (RPM).
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6.
To re-tension the V-belt, use the motor posi-
tioning handle to push the motor back, then
lock the motor in place with the two motor
locking handles.
7.
Replace the two belt covers before starting
the mill.
To avoid an entanglement hazard, always
operate the Model G9901/G9902 mill with
the two side belt covers in place.
Configuring Spindle Speed Controls
(G9903)
1. With the spindle in motion, use the variable
speed handwheel to select the correct speed
for your workpiece (see Figure 36).
NOTICE
To avoid damage to the variable speed sys-
tem on the Model G9903 mill, always have
the spindle in motion when changing the
spindle speed.
Low Range
Indicator
Window
Figure 36. Model G9903 variable speed
handwheel and speed indicator windows.
Note: Each speed range has an indicator
window that shows the spindle speed as
selected.
Model G9901/G9902/G9903 Milling Machine
High Range
Indicator
Window
Variable
Speed
Handwheel