2roll gap, 1checking the roll gap, Roll gap – MacDon R85 Rotary Disc 16 Foot Pull-Type User Manual
Page 97: Checking the roll gap, Important, Danger, 2 roll gap
OPERATING THE MOWER CONDITIONER
7.2 Roll Gap
Steel rolls condition the crop by crimping and crushing the stem in several places. This allows moisture to release
for quicker drying. The degree to which the crop is conditioned as it passes through the rolls is controlled by roll gap
that is factory-set at 1.0 in. (25 mm).
Correct conditioning of alfalfa, clover, and other legumes is usually indicated when 90% of the stems show cracking,
but no more than 5% of the leaves are damaged. Set enough roll gap to achieve this result.
A larger gap may be desirable in thick stemmed cane-type crops. However, too large a gap may cause feeding
problems. Grass type crops may require less gap for proper feeding and conditioning.
IMPORTANT
If settings below the factory setting are used, it is recommended that the actual gap be visually checked.
7.2.1 Checking the Roll Gap
Follow these steps to check the roll gap:
DANGER
Stop engine and remove key from ignition before leaving operator's seat for any reason. A child or even
a pet could engage an idling machine.
1. Lower mower conditioner fully.
2. Stop engine and remove key.
3. Open driveshield. See Section
Figure 7.2
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