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SETTINGS AND ADJUSTMENTS
SECTION 4-6
Adjusting or Replacing Bed Knives
REPLACE THE DOWNST
R
OKE BED KNIFE
Install the down-stroke bed knife (located on the near
side of the rotor) making sure to install it with the knife-
edge on the upper side.
Engage the captive screws in the slots on the near side of
the knife bed and lower the knife onto the knife bed.
Repeat these steps for the second half of the down-stroke
knife.
REPLACE THE DOWNSTROKE KNIFE SHIELDS
Back off the captive screws on both halves of the bed
knife so that they will not interfere with the rotor.
Place the shields over the bed knife.
Install the mounting screws and washers and tighten them
finger-tight.
CHECK THE BED KNIVES
Check both halves of the upstroke knife (the bed knife on the far side of the rotor) to be sure
that the cutting edges face down.
Check both halves of the down-stroke knife (the bed knife on the near side of the rotor) to
be sure that the cutting edges face up.
GAP ADJUSTMENT TIPS
It is best to keep the adjustments on the captive screws moving in the same direction. This
eliminates the effect of backlash in the adjusting screw.
Make the screw adjustments in small steps to keep the bed knife adjustment even over the width of
the machine.
To avoid cutting the shim stock, turn the rotor backward during the adjustment procedure.
Use the rotor knife with the largest dimension from rotor centerline as the reference, i.e., the highest
knife.