MacDon R1 Series Operator's Manual page 201

1. Position the rotary disc pull-type at an appropriate height for the task.
2. If the rotary disc pull-type is raised:
a. Place blocks under each end, or just inside each end, of the cutterbar.
b. Lower the rotary disc pull-type onto the blocks.
c. Shut down the engine, and remove the key from the ignition.
d. Close the lift cylinder lock-out valves. For instructions, refer to
3. On a daily basis, check that the disc blades are securely
attached to the disc.
4. Inspect the blades for cracks, blade wear (A), and holes (B),
which may have widened beyond safe operating limits (C).
5. Replace any potentially damaged blades immediately.
IMPORTANT:
Replace blades in pairs so that the disc remains balanced.
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MAINTENANCE AND SERVICING
3.1.1 Engaging Locks, page
Figure 4.70: Disc Blades
A - Blade Wear to Center Line
B - Elongated Hole
C - Maximum Elongation 21 mm (13/16 in.)
183
C
B
35.
A
Revision A