MacDon R85 Rotary Disc 13 Foot Self-Propelled Windrower Header - Manual (Page 129)

MAINTENANCE AND SERVICING
7.6.3 Direction of Spindle Rotation
Figure 7.27
A - Front of Header B - 13-Foot Cutterbar C - Disc 110
D - Disc 811
7.6.4 Cutter Blades
Each disc has two cutter blades (A) attached to each end
and are free to swivel horizontally on a specially designed
shoulder bolt.
The blade, with two cutting edges, can be flipped over so
that the blade does not need to be replaced as often.
The blades are NOT repairable and must be replaced if
severely damaged or worn.
IMPORTANT
Always use factory replacement parts.
Figure 7.28
10. Driveline deflector installed here.
11. Driven deflector installed here.
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Rev. E