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Grizzly G0709 Owner's Manual: Thread Settings

14" x 40" gunsmithing lathe.
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leaving 0.003"–0.005" backlash between
gear teeth, arrange the change gears to
match the order under "f" (see figure 52).
figure 52. Change gear and chart relationship.
rotate the spindle by hand to verify no bind-
ing exists, and re-install the gear cover.
Move the feed dials to the combination of
fATX1, as shown in figure 53.
figure 53. Feed control settings for a 0.00168"
carriage feed rate.
Model G0709 (Mfg. Since 5/11)

Thread Settings

regardless of the example given below, the setup
procedure on this lathe is the same for metric,
inch, module, or diametral pitch threads. these
thread selections are indicated by a series of
letters and numbers shown on the headstock
threading charts. First, the change gear positions
are checked and rearranged if indicated by the
chart. next, the quick change gearbox knobs and
levers are moved to specific positions also indi-
cated by the chart.
To set up for threading:
disConneCt lAthe FroM poWer!
remove the cover on the left-hand side of the
headstock to expose the change gears.
review the threading chart for the required
thread to be cut (see figure 54). the chart
indicates that to cut a 0.75 metric thread, the
change gears and feed dials must be in the
following positions fbSW6.
—"f" is the first letter in the sequence and
indicates that the change gears must be
rearranged in the "F" order (see figure
—"bSW" is the second group of letters that
indicate which position to turn the lettered-
feed dials to.
—"6" is the last digit and indicates which
position to turn the numbered feed dial to.
figure 54. Metric thread pitch chart.


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