Jet JFM-5 - Installing Chisel and Auger; Chisel and Auger Installation Process; Chisel Slot Orientation Guidance

11
Install Bushing, Chisel and Auger
NOTE: A chisel and auger are not provided with
your mortiser. Contact your dealer for available
chisel/auger sets from WMH Tool Group.
1. Loosen the locking screw (Figure 9).
2. Insert bushing into the hole with the
bushing’s hole facing the front toward the
locking screw (Figure 9). NOTE: The
mortiser is shipped with one of the three
bushings already installed. To remove it,
loosen the locking screw and slide out the
bushing.
3. Tighten the locking screw just enough to
hold the bushing in place.
Chisels and augers are very
sharp! Use caution when working with or
around them.
4. Place the chisel and auger beneath the
bushing and allow the auger to rest upon
the table while pushing the chisel up
through the bushing.
5. The cutting portion of the auger must clear
the chisel by an amount dependent upon
the size of chisel and the type of wood to be
worked. This is usually about 1/16” to 3/16”.
Place a spacer of the appropriate thickness
(a hex wrench of appropriate size works well
for this) between bushing and chisel, and
push chisel up until it contacts the spacer.
See Figure 9.
6. Tighten the locking screw to hold the chisel
in place, and remove the spacer.
7. Push the auger up through the chisel
opening and into the chuck as far as it will
go. Tighten the auger in the chuck by
rotating the chuck key clockwise in the
chuck.
8. Loosen the locking screw and push the
chisel all the way up until it contacts the
bushing. This should provide the proper
chisel to auger clearance. Tighten the
locking screw.
NOTE: Set the slot in the side of the chisel
to the left or right, if the cut is to be done
laterally; and front or back if the cut is to be
done front to back. The chisel slot should
always be positioned so chips are being
released into the already-cut part of the
workpiece. Refer to Figure 19.
9. Make sure the chuck and the locking screw
are tight, and close the chuck access cover.
Figure 9
The chuck access cover has been removed for
clarity. Do not operate the mortiser without cover
in place.