Woods BRUSHBULL BB48 Operator's Manual page 18

4. Rotate crossbar (3) and repeat for opposite blade.
1. Blade pin
1
2. Blade
3. Crossbar/Stump jumper assembly
4. Blade pin lock washer
5. Blade pin hex nut
Figure 6. Blade Assembly
Install Blades
Refer to Figure 6.
CAUTION
Your dealer can supply genuine replacement
blades. Substitute blades may not meet original
equipment specifications and may be dangerous.
■
Crossbar rotation is counterclockwise when
looking down on cutter. Be sure to install blade cut-
ting edge to lead in counterclockwise rotation.
IMPORTANT
■
Always replace or sharpen both blades at the
same time.
1. Inspect blade pin (1) for nicks or gouges, and if you
find any replace the pin.
2. Insert pin through the blade. Blade should swivel
on bolt; if it doesn't determine the cause and
correct.
3. Align crossbar (3) with blade access hole in cutter
frame. Apply a liberal coating of Never-Seez
equivalent to blade pin and crossbar hole. Make
sure blade offset is away from cutter.
4. Insert blade pin (1) through blade. Align key on
blade pin with keyway in crossbar and push blade
pin through crossbar.
5. Insert lock washer (4) and nut (5) through blade
access hole in the cutter frame. Install on blade pin
(1) and tighten to 450 lbs-ft using a 1-11/16"
socket.
14 Owner Service
5
4
3
2
LA7
®
Sharpen Blades
■
When sharpening blades, grind the same
amount on each blade to maintain balance.
Replace blades in pairs. Unbalanced blades will
cause excessive vibration, which can damage
gearbox bearings. Vibration may also cause struc-
tural cracks to cutter.
1. Sharpen both blades at the same time to maintain
balance. Follow original sharpening pattern.
2. Do not sharpen blade to a razor edge—leave at
least a 1/16" blunt edge.
3. Do not sharpen back side of blade.
Follow Original Pattern
Maintain Corner
CD1257-2
ADJUST SLIP CLUTCH
The slip clutch is designed to slip so that the gearbox
and driveline are protected if the cutter strikes an
obstruction.
A new slip clutch or one that has been in storage over
the winter may seize. Before operating the cutter, make
sure it will slip by performing the following operation:
(Walterschied)
1. Turn off tractor engine and remove key.
2. Remove driveline from tractor PTO.
3. Loosen six 10 mm cap screws (6) to remove all
or
tension from Belleville spring plate (5).
4. Hold clutch hub (3) solid and turn shaft to make
sure clutch slips.
5. If clutch does not slip freely, disassemble and clean
the thrust plate faces (4), flange yoke (1), and
clutch hub (3).
6. Reassemble clutch.
7. Tighten Belleville spring (5) until it is against the
thrust plate (4) of the clutch, and then back off each
IMPORTANT
Figure 7. Sharpen Blade
(Rev. 10/27/2006)
MAN0050 (Rev. 1/16/2004)
1/16"