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Owner Service 23
MAN0390 (Rev. 4/6/2007)
NOTE: Always replace or sharpen both blades at the
same time.
1. Inspect blade pin (12) for nicks or gouges, and if
you find any, replace the blade pin.
2. Insert blade pin through the blade (9). Blade
should swivel on blade pin; if it doesn’t, determine
the cause and correct.
3. Align crossbar (8) with blade access hole in cutter
frame. Apply a liberal coating of Never Seez or
equivalent to blade pin and crossbar hole. Make
sure blade offset is away from cutter. Push blade
pin through crossbar. Pin should rotate freely prior
to installing blade clip (15).
4. Install shims (13 & 16) over blade pin.
NOTE: Only use enough shims to allow keyhole
plate (14) to slide into blade pin groove.
5. Install blade clip (15) over keyhole plate and into
blade pin groove.
6. Secure into position with cap screw (35). Torque
cap screw to 85 lbs-ft.
7. Repeat steps for opposite side.
NOTE: Blade should be snug but should swivel on
pin without having to exert excessive force. Keep
any spacers not used in the installation as replace-
ments or for future installation.
Sharpening Blades
NOTICE
■ 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.
Figure 14. Sharpen Blade Cutting Edge
Figure 15. Slip Clutch Assembly
1. Flange yoke
2. Friction disc
3. Hub, 1-3/8 round bore
4. Thrust plate
5. Belleville spring plate
6. 10 mm x 1.35P x 50 mm Cap screw
7. 10 mm x 1.5P Hex nut
(Rev. 5/11/2007)