Adjusting Upper Drive Roll Chain (570 Only)

To ensure that all slack is removed from chain, close gate and engage PTO a few seconds. Shut off tractor engine.

Adjust tension of upper drive roll chain as follows:

Loosen the idler lock nut (A).

Press idler (B) against chain so that chain deflection to the opposite strand of idler is about 26 mm (1 in.).

Tighten the idler lock nut (A) to 163 N·m (120 lb-ft).

Engage PTO a few seconds.

Check the chain deflection. Repeat adjustment if necessary.

A-Idler lock nut
B-Idler

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