Return Spring Adjustment; Laser Adjustment - Jet JWDP-12 Operating Instructions And Parts Manual

8.4 Return spring adjustment

The return spring is located opposite the downfeed
handle hub and sets the tension for the downfeed
handle. It is adjusted at the factory and should not
need further adjustment.
If adjustment is deemed necessary:
1. Unplug machine from power source.
Refer to Figure 10:
2. Loosen jam nut (A) and hex nut (B). Do not
remove.
3. Pull out slightly the coil spring cover (C) while
firmly holding it. DO NOT allow the coil spring
cover to turn freely in your hand, or the spring will
unwind.
4. Rotate the coil spring cover (C) until notch on
cover engages with tab (E) on head casting. Turn
cover clockwise to decrease tension and counter-
clockwise to increase tension.
5. Tighten hex nut (B) firmly by hand against cover
(C), then secure by tightening jam nut (A) against
hex nut (B).

8.5 Laser adjustment

The Laser Assembly has been installed and preset at
the factory. It should, however, be checked and any
adjustments made before operating the drill press. It
should also be rechecked periodically, as constant
machine use may cause it to become misaligned.
To align (refer to Figure 11):
1. Place a small drill bit (D) in the chuck (C), then
place board (F) flat on the table. Do not allow the
board to move from this position; use clamps if
needed. Important: The drill press table should
be in horizontal position and locked.
2. Bring the bit down until it leaves a slight
perforation in the board (E) then raise it back up.
3. Connect power to drill press, and turn on laser
using button at front of drill press head.
4. Using a 3mm hex wrench, loosen setscrews (A) on
both laser assemblies (only left side laser
assembly is shown in Figure 11).
5. Adjust (B) so the laser line (G) crosses the
perforation (E). Tighten setscrew (A).
6. Adjust the other laser assembly in the same
manner until both laser lines form cross-hairs
(G,H) exactly over the perforation (E) in the
board.
7. Tighten both setscrews (A).
The laser is now calibrated properly and the location
of your holes can be centered at the crosshairs for
accurate drilling.
11
Figure 10
Figure 11