MacDon R85 Rotary Disc 13 Foot Pull-Type - Manual (Page 45)

OPERATION
Form 169454
43
Revision A
6.13.4.1 Roll Gap Adjustment
a. Lower header fully.
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.
b. Stop engine, and remove key.
c. Loosen and “back off” upper jam-nut (A) - on
both sides of conditioner.
d. To increase roll gap, turn lower nut (B)
clockwise.
NOTE
The amount of thread protruding through
jam-nut indicates roll gap. Factory setting
is 0.75 in. (19 mm) which equates to
0.50 in (13 mm) of roll gap.
NOTE
When adjusting roll gap, be sure that the
thread protruding is the same on both
sides of the conditioner roll to achieve a
consistent gap across the rolls.
e. To decrease the roll gap, turn lower nut (B)
counter clockwise.
f. Tighten jam-nuts (A), both sides.
0.75 in. (19 mm)
A
B