Sharpening The Knives (Straight Knives Only); Lubrication - Jet JPJ-12B Operating Instructions And Parts Manual

12.2 Sharpening the Knives (Straight
Knives Only)
Disconnect machine from
power source
adjustments. Failure to comply may cause
serious injury.
Blades are extremely sharp!
Use caution when handling. Failure to comply
may cause serious injury!
1. Disconnect machine from power source.
2. Fully swing the cutterhead guard (G, Fig. 11)
away from the fence (B, Fig. 11). It is
recommended to then use a 6mm hex
wrench (one is included with the machine) as
a makeshift stop to hold the guard in place.
To do this, insert the wrench into the front
right roller tension adjustment screw. The
cutterhead guard can then be released and
the wrench will prevent it from swinging back
towards the fence.
3. To protect the infeed table from scratches,
partially cover the sharpening stone with
paper (Figure 30).
4. Lay the stone on the infeed table.
5. Lower the infeed table and turn the
cutterhead by turning the cutterhead pulley.
The infeed table height is set properly when
the stone's surface is flush with the knife
bevel.
6. Keep the cutterhead from rotating by
grasping the cutterhead pulley while sliding
the stone back and forth across the table.
before making
7. Take the same number of passes for all three
blades.
If the blades have been sharpened and still are
not cutting efficiently, trying to touch up the
any
blades further will only cause the formation of a
second beveled edge. When this starts to
happen, it is time to replace blades with another
set. It is recommended to keep a second set of
blades on hand so that they may be installed
while the first set is being professionally
sharpened.
helical knife inserts! Only rotate the knife
once it is dull. If all sides have been rotated
properly, dispose of the knife and replace it
with a replacement insert. Refer to sect. 10.6,
Replacing or Rotating Knife Inserts.

13.0 Lubrication

 Use a good grade of light grease on the steel
adjusting screws located in the raising and
lowering mechanisms of the work tables.
The cutterhead ball bearings are lifetime
lubricated and need no further care.
24
Figure 30
Do NOT attempt to sharpen