Knife Replacement; Adjusting Infeed Roller And Outfeed Rollers For Planing - Jet JPM-13CS Operating Instructions And Parts Manual

12. Repeat steps five through eleven for blades
two and three.

10.6 Knife replacement

Use caution when placing
hands near the cutterhead.
extremely sharp. Failure to comply may cause
serious injury.
1. Disconnect machine from power source.
(Unplug)
2. Remove screws securing the dust hood and
dust chute.
3. Remove dust hood and dust chute.
4. With a marking pen, label each knife on the
cutterhead one, two, and three for easy
identification.
5. Loosen all lock bar set screws on knife number
one.
6. With the brass bar and a mallet, carefully tap
on each end on the outside of the set screws
for all three lock bars on knife number one.
This loosens the taper fit of the lock bar.
7. Carefully remove knife.
8. Remove lock bars.
9. Repeat steps 5-8 for knives two and three.
10. Clean cutterhead of any wood chips, pitch,
saw dust, and any other debris.
11. Replace lock bars on knife number one as in
Figure 9, paying attention to which direction
they face.
Figure 9
12. Carefully install new or sharpened knife into
cutterhead between lock bar and cutterhead.
Note direction of knife as pictured in Figure 5.
13. Adjust knife. Refer to section in this manual
titled "Knife Adjustment", steps seven through
eleven.
14. Repeat steps 11-13 for blades number two
and three.
10.7 Adjusting infeed roller and
As a general rule of thumb, the infeed and outfeed
rollers are set 1/8" below the cutterhead (not the
knives) at the factory. To check the feed rollers:
1.
Knives are
2.
3.
4.
5.
6.
12
outfeed rollers for planing
Disconnect machine from power source.
(Unplug)
Make two blocks out of scrap 2x4 lumber using
the dimensions noted.
Mark each block as shown in Figures 10 and
11.
Figure 10
Figure 11
Lower the work table to allow cutterhead block
to slide freely between the table and the
cutterhead. Note: Cutterhead may have to be
turned by hand to rotate a blade out of the
way.
Adjust the table height so the block can be
inserted between the table and the cutterhead
with minimum resistance.
Remove the block. Do not raise or lower the
table at this point. It will affect the final result.