Instruction Manual

REVISION 9/04 BJF
34
SETTINGS AND ADJUSTMENTS
SECTION 4-4
Adjusting or Replacing Bed Knives
LOOSEN THE MOUNTING SCREWS
Select either the upstroke knife or the downstroke knife for first
removal.
Loosen the bed knife screws with a 30 mm socket mounted on a
breaker bar. These screws are tightened to a torque of 472 ft lbs (640
Nm) so make sure you have the proper breaker bar (a four foot long
(1.2 m) bar with a 3/4 inch (19 mm) drive is suggested). Make sure you
have solid footing while you apply the breaking force.
REMOVE THE FIRST KNIFE CLAMP OR SHIELD
Remove the screws on one half of the selected bed knife using a
30mm socket or equivalent wrench.
*NOTE: When removing the knife clamp on the upstroke knife (the similar
piece on the down-stroke knife is called knife shield), hold the clamp while
removing the last screw to keep it from slipping off its inclined mounting
surface. The knives will not slip off because the captive adjusting screws
secures them.
Keep the screws for reinstallation or use new factory-supplied
screws of the same specification for replacement.
Repeat the removal procedure for the remaining knife clamps and
shields.
REMOVE THE BED KNIVES
Remove the bed knives by lifting each half until the knife clears the
push screw and block.
Remove the second bed knife using the same procedure.