MacDon R85 Rotary Disc 16 Foot Pull-Type - Manual (Page 99)

OPERATING THE MOWER CONDITIONER
7.2.2 Adjusting the Roll Gap
Follow these steps to adjust 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 mower conditioner fully.
2. Stop engine and remove key.
3. Loosen and back off upper jam nut (B) on both sides
of conditioner.
4. Adjust the roll gap as needed.
NOTE: The amount of thread (A) protruding
through jam nut (B) should be 1-3/16 in.
(30 mm). This equates to 1 in. (25 mm)
of roll gap.
a. To INCREASE roll gap, turn lower nut (C)
clockwise.
b. To DECREASE the roll gap, turn lower nut (C)
counterclockwise.
NOTE: When adjusting roll gap, be sure that the
thread protruding (A) is the same on both
sides of the conditioner roll to achieve a
consistent gap across the rolls.
5. Tighten jam nuts (B) on both sides.
Figure 7.6
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Rev. D