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15
22. High-Low Speed Selector (A, Fig. 19) -
Push toward the rear of the machine for the
high-speed range and pull toward the front
for the low speed range.
23. Lock Pin for Back Gear (B, Fig. 20) – For
high-speed operation, pull out pin and turn
pin 90° clockwise to engage back gear (B
1
).
To disengage the back gear for low-speed
operation, pull the pin out, turn 90° counter-
clockwise, and rotate the chuck until the pin
seats.
Engage back gear only
for high-speed operation. Do not operate
in low-speed range while back gear (B
1
)
is engaged. Failure to comply may result
in gear damage.
9.0 Adjustments
9.1 Break-In Procedure
During manufacturing and testing, this lathe has
been operated in the low R.P.M. range for three
hours.
To allow time for the gears and bearings to
break-in and run smoothly, do not run the lathe
above 580 R.P.M. for the first six hours of
operation and use.
9.2 Speed Selection
To change speeds, disconnect the lathe from
the power source and remove the tension by
pulling handle (C, Fig. 20) forward. Move the
belts (D, Fig. 20) to the desired location
according to the speed selection chart (E, Fig.
21). Tension the belts by moving the handle
towards the rear.
9.3 Feed and Thread Selection
1. Reference the feed and thread tables (F,
Fig. 21).
2. Move levers and knobs (G, Fig. 21) to the
appropriate position.
Figure 19
Figure 20
Figure 21
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