Operating instructions

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18 YP4-6-825A3P Table of Contents Index Great Plains Manufacturing, Inc.

401-652M Table of Contents Index 2015-01-26

Leveling Planter

For row units to function correctly, planter must be:

• level from side to side,

• level from front to back, and;

• at correct tool bar height.

Perform this setup on level ground in representative ﬁeld

conditions.

Refer to Figure 10

1. Raise planter so that gauge wheels are just off

ground.

2. At each gauge wheel, measure the pre-compressed,

no-load length of the yoke spring .

All axles should be in the same (upper or lower) arm

holes. All springs should have this same length. Note

this length for step 9.

See page 45 for factory setting, and adjustments for

local conditions.

3. Check tire pressures of gauge wheels. As

necessary, inﬂate to speciﬁcations (page 103).

Refer to Figure 11

4. Measure height from bottom of main tool bar to

ground, at each end. If this dimension differs by

more than

⁄

inch (6.4 mm) at each end, adjust

lower links of tractor to level side-to-side.

Note the current height for step 7, and what lowering

would be required to make that 26 inch (66 cm).

5. Check front-to-back level at top of main tool bar. If

unlevel, adjust top of tractor three-point to level.

6. Pull forward slowly, and lower the planter to

approximately 26 inch (66 cm). Stop the tractor and

set the parking brake.

7. Check the tool bar height . Adjust the hitch height

until it is 26 inch. If available, set a hitch stop control

to capture this height.

8. Check that the row units are running level with the

ground.

9. Check that the gauge wheels are all in solid ground

contact, tires slightly compressed, and that the

springs are slightly compressed from the length

checked at step 2.

Hitch conﬁguration during planting can vary between

tractor models, and due to ﬁeld conditions. Great Plains

recommends starting with the hitch set to Float or

Position/Depth Control (and not Load or Draft Control).

Figure 10

Gauge Wheel Yoke

31053

Figure 11

Tool Bar Height and Leveling

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