Break-In Procedure; Speed Selection; Feed And Thread Selection - Jet BDB-1340A Owner's Manual

22. High Low Speed Selector (A, Fig. 16) -
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 the Back Gear (B, Fig. 17) -
Pull the pin out and turn 90 clockwise to
engage the back gear. Pull the pin out, turn
90 counter-clockwise, and rotate the chuck
until the pin seats to disengage the back
gear.

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.

Speed Selection

To change speeds, disconnect the lathe from
the power source and remove the tension by
pulling handle (C, Fig. 17) forward. Move the
belts (D, Fig. 17) to the desired location
according to the speed selection chart (E, Fig.
18). Tension the belts by moving the handle
towards the rear.

Feed and Thread Selection

1. Reference the feed and thread tables (F,
Fig. 18).
2. Move levers and knobs (G, Fig. 18) to the
appropriate position .
15