MacDon PW8 Pick-Up Header - Manual (Page 112)

MAINTENANCE AND SERVICING
2. Push guard onto ring until locking ring is visible in
slots (A).
Figure 4.34
3. Rotate ring (A) clockwise with a screwdriver to lock ring
in guard.
Figure 4.35
4. Push grease zerk (A) back into guard.
Figure 4.36
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Revision A