MacDon D65 Operator's Manual page 100

2. Loosen jam nuts (B) and (C).
3. Turn nut (A) to adjust chain tension.
Figure 3.72: HDS Chain – Left Shown, Right Similar
B
4. Measure to ensure chain midpoint (A) is 25–50 mm (1–2 in.) lower than the chain ends (B).
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B
Figure 3.71: Chain Adjustment Bolt – Left Shown,
Right Similar
A
80
A
C
B
Revision B