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Model G0779 (Mfd. Since 09/14)
Tensioning Return
Spring
3. Loosen thumb knob shown in Figure 44
2–3 turns (DO NOT completely remove
thumb knob).
To adjust spring tension:
1. DISCONNECT MACHINE FROM POWER!
2. PUT ON SAFETY GLASSES!
If the return spring should
come loose from the spring
cap and rapidly unwind,
laceration or impact inju-
ries could occur. Always
wear heavy leather gloves
and safety glasses when
adjusting the return spring
tension.
Figure 44. Spring tension components.
Thumb Knob
Spring Cover
Roll Pin
4. Wearing gloves, pull spring cover (Figure
45) out enough so notches just clear roll pin.
HOLD SPRING COVER TIGHTLY during this
step, or force of spring will cause cover to
spin out of your hands.
5. Rotate cover counterclockwise to increase
tension, then push cover back in to engage
roll pin with one of the notches, as shown in
Figure 45, then retighten thumb knob.
Notch
Figure 45. Example of adjusting spring tension
by rotating spring cover to engage next notch
with roll pin.
The spring tension for automatic quill recoil has
been pre-set at the factory. It should not need
adjustment under most normal circumstances. If
it does need adjustment, the spring housing is
located on the left side of the headstock.
Calibrating Depth
Stop
The depth stop can be calibrated to improve
accuracy. Make sure the spindle is retracted all
the way into the quill, then follow the steps below.
To calibrate depth stop:
1. Lower depth stop (see Figure 46) until point-
er reaches bottom of its travel.
2. Loosen button head cap screw shown in
Figure 46, and position pointer so its upper
edge aligns with zero, then re-tighten screw.
Figure 46. Calibrating depth stop.
Pointer Button Head
Cap Screw