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10. Replace and reset the other three knives in
the same manner.
11. After all four knives are set with the screws
just snug, back out and tighten the six screws
(F) against the slot starting with the end
screws first and then the center screws until
the knife is securely held in the cutterhead.
Tighten the remaining three knives in the
same manner.
After replacing and checking
knives, CHECK AGAIN carefully. Make certain
the direction of knives is correct and all
twenty-four locking screws are tightened
securely.
Replacing or Rotating Knife Inserts
(Model JWP-208HH only)
The knife inserts on the model JWP-208HH are
four-sided. When dull, simply remove each insert,
rotate it 90° for a fresh edge, and re-install it.
Use the provided star point screwdriver to remove
the knife insert screw. See Figure 20a. It is
advisable to rotate all inserts at the same time to
maintain consistent cutting. However, if one or
more knife inserts develops a nick, rotate only
those inserts that are affected.
Each knife insert has an etched reference mark so
you can keep track of the rotations.
IMPORTANT: When removing or rotating inserts,
clean saw dust from the screw, the insert, and the
cutterhead platform. Dust accumulation between
these elements can prevent the insert from
seating properly, and may affect the quality of the
cut.
Before installing each screw, lightly coat the screw
threads with machine oil and wipe off any excess.
Securely tighten each screw which holds the knife
inserts before operating the planer!
Make sure all knife insert
screws are tightened securely. Loose inserts
can be propelled at high speed from a rotating
cutterhead, causing injury.
Checking Work Table Parallel to
Cutterhead
The work table is set parallel to the cutterhead at
the factory and no further adjustment should be
necessary. If your machine is planing a taper, first
check to see if the knives are set properly in the
cutterhead. Then check to see if the work table is
set parallel to the cutterhead. Proceed as follows:
Figure 20a – JWP-208HH only
14
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