Use and Care Manual

ST1007/12/14 15" & 20" Planers (Mfd. Since 9/17)
-29-
Loosen
Spring
Knife
Gib Bolt
Gib
Jack
Screw
Tighten
Figure 27. ST1007 cutterhead components (springs
and jack screws both shown).
To adjust height of knives:
1. DISCONNECT MACHINE FROM POWER!
2. Put on heavy leather gloves to protect your
hands.
3. Remove rear dust hood and top cover to expose
cutterhead.
4. Remove belt cover, then rotate cutterhead pul-
ley to give you good access to one of the knives.
The cutterhead for the Model ST1007 ships with both
springs and jack screws for adjusting the knife height
(see Figure 27). Which one you use is a matter of
personal preference. Springs exert upward pressure
from underneath the knives and allow adjustments
to be made very quickly. Jack screws support the
knives from underneath, and by threading the screws
in or out, you can precisely control the knife height.
In both instances, wedge-type gibs and gib bolts lock
the knives in place. Choose whichever method meets
your needs, but understand that the screws and
springs cannot be used together—you must choose
one and remove the other.
5. Loosen cutterhead gib bolts until knife is com-
pletely loose, then position knife-setting jig over
knife so that knife edge is directly under center
pad, as shown in Figure 28.
Figure 28. Knife-setting jig correctly positioned
over knife.
Figure 29. ST1007 & ST1012 jack screw access hole
in cutterhead.
Jack Screw
Access Holes
6. Springs: Push down on knife gauge until all
legs of the gauge are firmly on the cutterhead
and the knife just touches the centerpad of the
gauge. Then tighten the gib bolts enough to
hold the knife in place.
Jack Screws: Insert hex wrench into jack screws
through access holes in cutterhead (see Figure
29). Rotate jack screws to raise or lower knife
until it barely touches center pad of knife gauge
with all legs of gauge still firmly on cutterhead.
Then snug gib bolts enough to hold knife in
place.
Center
Pad
Gib
Bolt
Knife
Gauge
Knife