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MAINTENANCE
PT5 09/10 Maintenance Section 5-3
© 2010 Alamo Group Inc.
MAINTENANCE
CUTTERBAR
Adjusting the Knife Guides
Before commencing any checks or adjustments, lay the cutterbar flat on the ground. Select “CUTTERBAR
OFF”, switch off the tractor and disconnect the con rod.
When adjusted correctly the knife sections (4) lie flush between the fingers and the underside of the knife
holder (1) with the fingers projecting 6 MM to 8 MM in front of the knife tips. In addition there must be a
maximum clearance of 1MM between the sloping faces of the knife holder (1) and the guide plate (2). This
allows clearance for the knife to move freely and can be checked by placing a 5/8” dia bar into the con rod
socket in the knife heel and operating by hand.
The guide plate (2) and rubbing plate (3) are mounted through slotted holes which allows the correct lateral
positioning of the knife in relation to the fingers.
Any play caused by wear between the knife holder (1) and the knife sections (4) is removed by turning the
setscrew (5). The knife guide should be adjusted until the matting faces are flush. No downward pressure
should be exerted onto the knife as this may impede its free movement.