MacDon R80 Rotary Disc - Manual (Page 28)

OPERATION
Form # 169089
26
Model Year - 2009
e. To adjust roll timing, refer to illustrations and
proceed as follows:
1. Loosen four bolts (C) in slots of yoke plate
on upper roll universal shaft.
2. Position gauge at centre of rolls and
manually turn the rolls to engage the gauge.
The rolls will automatically adjust to the
correct timing.
3. Tighten bolts (C) to secure the position.
4. Turn the rolls manually to release gauge.
CAUTION
To ensure gauge is not forcibly ejected
from rolls when machine is started, ensure
gauge is securely re-attached to frame.
f. Store gauge (B) inside RH panel with bolt (A)
and nut.
6.12.6 Roll Tension
The roll tension (the force holding the rolls
together) is factory set to maximum and is
adjustable.
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.
a. Lower header to ground, shut down tractor and
remove key.
b. Open both rear drive shields.
c. To increase the roll tension, loosen jam nut (D)
and turn the spring draw-bolt (E) clockwise to
tighten the spring (F) at each end of the roll.
d. To decrease the roll tension, turn the spring
draw-bolts counterclockwise to loosen the
springs.
e. Tighten jam-nut (D) after adjusting tension.
f. Close drive shields.
C
A
B
F
D
E
LH SHOWN