MacDon R85 Rotary Disc 16 Foot Self-Propelled Windrower Headers - Manual (Page 79)

OPERATING THE HEADER
6.4 Roll Timing
For proper conditioning, the rolls must be properly timed
with each steel bar on one roll centered between two bars
of the other roll as shown. The factory setting should be
suitable for most crop conditions.
IMPORTANT
Roll timing is critical when the roll gap is
decreased because the bars may contact each
other if the timing is wrong.
6.4.1 Checking Roll Timing
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.
To adjust the conditioner roll timing, follow these steps:
1. Lower header fully.
2. Open the driveshield See Section 5.4 Driveshields,
page 28 .
3. Loosen nuts (A) and slide conditioner shield (B) up to
remove it.
Figure 6.7: End View of Header (LH Side)
A - Nuts B - Conditioner Shield
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Rev. F