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© 2005 Alamo Group Inc.
Section 7 - 2
Switch Blade (JD-5105-5205-5225-5325-5425-5525, Asy. Man) 05/05
CUTTER BAR ADJUSTMENTS
Figure 3
Lead Adjustment:
The lead angle is how far the outer end of
the cutter bar runs forward of the inner end.
The lead angle of the cutter bar is preset at
the factory at 3/6" per foot. The lead may be
changed if desired. To reduce the lead, move the
washers from the outside of the cutterbar support
plate in between the rubber strike pad and plate
(See Figure 3).
Pitch Adjustment:
The Pitch angle is the level of the cutter bar
front to rear or what angle the blade is to level front
to rear. Different cutting conditions allow you to
change the pitch of the knife by + 15° to - 15° or
level.
The pitch is set by loosening the three
mounting bolts that connects the skid shoe /
Break-A--Way assembly to the carriage arm as-
sembly (See Figure 4 & 4A). The two lower bolts
holes are slotted, this will allow the cutter bat to be
tipped up +15° or down -15° in front. Set Pitch at
what works best for your application.
Cutter Bar Alignment:
All cutting is done by the knife passing over
ledger plate in the guard. It is vital that these
sections are parallel with the plates and in contact
with them, (See Figure 5 & 6).
The knife should move smoothly in the
cutterbar guides and every knife section should
rest on the ledger plate to make a shear cut. This
means the guards, ledger plate, wear plates, clip
and knife head caps must be in good condition and
correctly set. If these parts become loose or worn,
the knife will flop around in the cutter bar, chewing
and tearing instead of cutting.
Guard Adjustment:
1. To align the guards, the only method pro-
vided to accomplish this very important adjust-
ment is to bend the guards into alignment with a
hammer. No easier method has been found to
adjust heavy duty guards which will stand up in
rocky conditions.
Figure 4
Slotted Holes
Non-Slotted
Hole
Continued Next Page
Figure 4A