New Holland 499 Operator's Manual page 84

SECTION 4 - MAINTENANCE
Guard Inspection
Inspect the edge of the guard ledger surface at 1. If
3
the edge is rounded or severely damaged, the guard
should be replaced.
The tips, 2, of the standard guards should be
relatively sharp. If they are blunted from contact with
foreign objects, material can hairpin and plug the
cutter bar. A hand grinder can be used to restore the
original point.
2
If the trash bars, 3, on the guards are bent, they
1
should be straightened so they are parallel to the
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knife back.
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