Modern AG 20' Predator - Manual (Page 68)

68 - 20’ Predatorrr
MaintEnancE
BladE SERVicing
Inspect blade before each use to determine that they are properly installed and in good condition.
Replace any blade that is bent, excessively nicked, worn or has any other damage. Small nicks can be
ground out when sharpening. using only original equipment blades on this cutter. they are made of
special heat-treated alloy steel. Substitute blades may not meet specification and may dangerous.
Blade Sharping
always sharpen both blades at same time to maintain balance. Follow original sharpening pattern as
shown in FIGuRe 3. always sharpen blades by grinding. DO nOt heat and pound out edge. Do not
sharpen blade to a razor edge, but leave a 1/16” blunt edge. Do not sharpen back side of blade.
iMPoRtant:
When sharpening blades, grind each blade the same amount to maintain balance. the difference in
blade weights should not exceed 1 ounce. unbalanced blades will cause excessive vibration which
can damage gear box bearings. Vibration may also cause structural cracks in cutter housing.
Never work under equipment support by a hydraulic device because it may drop if the control is actuated (even
with the engine stopped) or in the event of hose failure, etc. Always use a secure support for equipment which
must be serviced while in the raised position.
FOLLOW ORIGInaL PatteRn
MAINTAIN cORNER