Spartan
II
607
Operation
Great Plains | 166-486M | 2019/01/29
65
Row Unit Spring Adjustment
Row unit springs normally require no adjustment.
The factory setting for the row unit springs is:
(1) Spring length - 32.4 cm
(2) Assembly length - 56.2 cm
In some unusual conditions, rows in tire tracks may
need to be set heavier.
Machine Damage Risk
Do not use spring lengths shorter than
29.8 cm. It may contribute to premature
parts failure not covered by warranty.
1. Make adjustments with the wings unfolded and
the rows lifted off the ground, so that the springs
are at full extension.
2. Loosen the jam nut (3). Rotate the adjuster nut
(4). Shorten the spring to increase down-force,
lengthen the spring to reduce down-force.
For each turn of the adjuster nut, the down force
at the opener disk changes by approximately 1.7
kg/turn
3. Tighten the jam nut after setting the force.
Disk Blade Adjustments
Sharp Object Hazard
Coulter and disk blades are sharp. To avoid
serious injury, wear gloves when working in
this area.
Opener disk angle and stagger is not adjustable, but
disk-to-disk spacing is, and may need attention as
disks wear. Spacers will need to be reset when
blades are replaced.
The ideal spacing causes the blades to be in contact
for about 25 mm. If you insert two pieces of paper
between the blades, the gap between them should
be 0 to 44 mm (A).
If the contact region is significantly larger or smaller
(or there is no contact at all), adjust by moving one or
more spacer washers. If the contact region varies
with blade rotation, one or both blades is likely bent
and needs replacement.
Adjusting Disk Contact
1. Unfold the implement. Configure the implement
for maintenance lift lock (page 69).
2. Remove the bolt (1) keeping the opener disk on
one side. Carefully remove the blade (2), noting
how many spacers (3) are outside the disk and
inside the disk. Do not lose the hub components
and spacers.
3. To reduce the spacing between the disks, move
one spacer washer from the inside to the outside
of the disk.
When installing new blades, it is generally
necessary to move outside spacers back inside
after both disks are mounted.
4. Assemble and check the disk contact.
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