MacDon R85 Rotary Disc 13 Foot Self-Propelled Windrower Header - Manual (Page 78)

OPERATING THE HEADER
5. Inspect roll gap at both ends of the rolls. Gap (B)
should be 0.5 in. (12.7 mm).
IMPORTANT
Roll timing is critical when the roll gap is
decreased because the bars may contact each
other if the timing is wrong.
6. See Section 6.4 Roll Timing, page 73 for instructions
on checking the timing.
NOTE: Factory setting is 1/2 in. (12.7 mm).
A gap of 5/8 in. (16 mm) is
strongly recommended for heavier
crop conditions.
Figure 6.3: Conditioner Roll Gap (Roll Spacing
Not to Scale)
A - Direction of Crop Flow B - Center Roll Bars
C - Roll Gap
7. Reinstall the conditioner shield (A). Secure with
bolts (B).
8. Close the driveshield See Section 5.4 Driveshields,
page 28 .
Figure 6.4: Install Shield
6.2.2 Adjusting the Roll Gap
DANGER
Stop engine and remove key from ignition before
leaving operator’s seat for any reason. A child or
even a pet could engage an idling machine.
1. Lower header fully.
2. Stop the engine and the remove key.
3. Open the driveshield. See Section 5.4 Driveshields,
page 28 .
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