MacDon D65 Operator's Manual page 101

5. Tighten jam nut (C).
6. Lock nut (B) against nut (A).
NOTE:
If there is less than 5 mm (3/16 in.) of thread visible beside
jam nut (C), then remove nut (C).
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OPERATION
B
Figure 3.73: Chain Adjustment Bolt – Left Shown,
Right Similar
81
A
C
Revision B