Grizzly G0766 Owner's Manual page 29

Always choose correct spindle speed for
an operation. Using wrong speed may lead
to workpiece being thrown at high speed,
causing fatal or severe impact injuries.
To change speed ranges:
1. DISCONNECT MACHINE FROM POWER!
2. Open front belt access cover, as shown in
Figure 26.
Figure 26. Belt access cover removed.
3.
Loosen belt tension lock handle (see
Figure 27).
Belt Tension
Lever
Belt Tension
Lock Handle
Figure 27. Motor tensioning handle and tension
lock handle.
4. Use belt tension lever (see Figure 27) to
lift motor assembly all the way up, then re-
tighten belt tension lock handle—this will hold
motor in place while you change belt position.
Model G0766 (Mfd. Since 11/17)
5. Reach into belt access cavity and roll belt
onto desired set of pulleys, as shown in
Figure 28.
A = High Range
330-3200 RPM
= Low Range
B
100-1200 RPM
Motor
Figure 28. Speed range belt positions.
6.
Loosen belt tension lock handle and lower
motor.
7.
Apply downward pressure on belt tension
lever to properly tension drive belt, then re-
tighten belt tension lock handle.
Note: When properly tensioned, belt should
deflect about ⁄ " when moderate pressure is
1
8
applied to belt mid-way between upper and
lower pulley, as shown in Figure 29.
Deflection
Figure 29. Testing for
8. Replace front belt access cover.
Spindle
A
B
Pulley
⁄ "
1
8
Pulley
⁄ " belt deflection.
1
8
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