214323 391 Revision A
Figure 5.127: Double-Knife Center Stub Guard
Sheet metal hold-down:
Figure 5.128: Stub Guard Sheet Metal
Hold-Down
9. Manually stroke knife to center section (A) under hold-
down (B) as shown.
10. Decrease clearance by turning bolt (C) clockwise to
lower front of hold-down. Clearance should be
0.1–0.6 mm (0.004–0.024 in.).
11. Increase clearance by turning bolt (C) counterclockwise
to raise front of hold-down.
NOTE:
For larger adjustments, it may be necessary to loosen
nuts (D), turn adjuster bolt (C), and then retighten nuts.
12. Torque nuts (D) to 72 Nm (53 lbf·ft) after all adjustments
are complete and specified clearances are achieved.
Refer to Checking Stub Guard Hold-Downs, page 389.
WARNING
Check to be sure all bystanders have cleared the area.
13. Complete hold-down adjustments, run header at low engine speed, and listen for noise caused by insufficient
clearance.
NOTE:
Insufficient hold-down clearance will result in overheating of knife and guards—readjust as necessary.
5.8.8 Knifehead Shield
The knifehead shield attaches to the endsheet and reduces the knifehead opening to prevent cut crop from
accumulating in the knifehead cut-out.
The shields and mounting hardware are available from your MacDon Dealer.
IMPORTANT:
Remove the shields when cutting with the cutterbar on the ground in muddy conditions. Mud may pack into the
cavity behind the shield which could result in knife drive box failure.
MAINTENANCE AND SERVICING
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