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Model G0766 (Mfd. Since 07/15)
-27-
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.
3. Loosen belt tension lock handle (see
Figure 27).
Figure 26. Belt access cover removed.
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.
5. Reach into belt access cavity and roll belt
onto desired set of pulleys, as shown in
Figure 28.
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
1
⁄8" when moderate pressure is
applied to belt mid-way between upper and
lower pulley, as shown in Figure 29.
8. Replace front belt access cover.
Figure 28. Speed range belt positions.
Spindle
Motor
B
A
A = High Range
330-3200 RPM
B
= Low Range
100-1200 RPM
Figure 27. Motor tensioning handle and tension
lock handle.
Belt Tension
Lever
Belt Tension
Lock Handle
To change speed ranges:
1. DISCONNECT MACHINE FROM POWER!
2. Open front belt access cover, as shown in
Figure 26.
Figure 29. Testing for
1
⁄8" belt deflection.
Pulley
Deflection
Pulley
1
⁄8"