Great Plains 3N-3020P Operator Manual - Manual (Page 49)

4/23/2010 196-248M
47 Adjustments
Harrow Adjustment
Harrow Frame Tube
Refer to Figure 41
The harrow setting shown has been successful in
no- and minimum-till conditions. Because of dif-
ferent soil moisture, trash levels and trash types,
you may need to reposition the tube frame or
tines.
11891
Refer to Figure 42
To adjust the frame tube. Loosen four hex nuts (1)
18305
on the u-bolts (2) and rotate the frame tube (3).
To adjust the tines, loosen four 1/2-inch hex nuts
(4) on the 1/2-inch u-bolts (5) on the support bar
(6). Rotate tine tubes (7) so the tines (8) are
against the stop bushings (9) and are at the de-
sired angle. Retighten hex nuts on u-bolts.
Harrow Height
Refer to Figure 43
To set harrow height adjust chain (10) by remov-
ing 3/8-inch bolt (11) and positioning chain as
necessary. Reinstall bolt.
18305
Figure 41
Harrow setting
Figure 42
Frame tube adjustment
Figure 43
Height adjustment