New Holland 499 Operator's Manual page 85

WARNING
Disengage the PTO, turn off the tractor engine
and remove the key. Wait for all movement to
stop before leaving the operator's position.
Never adjust, lubricate, clean or unplug machine
with the engine running. Failure to comply could
result in death or serious injury.
Standard Guard alignment
The ledger surfaces of the guards, 1, for each knife
should be aligned so they all hold the knife at the
same height. The knife sections should lay almost
flat on the ledger surface of the guards. The tip of the
knife should contact the front of the ledger surface.
If the guards are not aligned, there will be excessive
wear on the knife sections and guards.
The bottom of Figure 34 shows the guard and knife
properly adjusted.
The tip of the knife section contacts the front of
•
the ledger surface at 2.
The lip, 3, of the guard does not contact the knife
•
section.
The back rib, 4, on the guard holds the knife back
•
level.
The hold down, 5, is close to the knife section, but
•
does not cause it to bind.
The top of Figure 34 shows the guard and knife
improperly adjusted.
The knife section contacts the rear of the ledger
•
surface at 6.
The lip, 7, of the guard contacts the knife section.
•
The back rib, 8, on the guard is worn and holds
•
the knife back too low.
The hold down, 9, is too far away from the knife
•
section.
NOTE: The tip of the guard in the top of Figure 34
should be bent upward to allow the knife to rest on the
ledger surface as shown in the bottom of Figure 34.
Check the guard alignment by sighting along the
ledger surfaces. An estimate of the guard alignment
can be obtained by sighting along the tips of the
guards, however the important surface to align is the
ledger surface.
SECTION 4 - MAINTENANCE
4-25
9
7
6
8
5
3
4 2
1
1
34