Great Plains 2020P Operator Manual - Manual (Page 19)

4/23/2010 118-740M
17 Preparation and Setup
Leveling Drill
Refer to Figure 2
10 Series Openers
Initially adjust drill so bottom of opener tube runs
24 inches above ground when drill is lowered in
the field.
To adjust:
Refer to Figure 3
1. Loosen jam nut near top clevis of each
gauge-wheel turnbuckle.
NOTE: Jam nut is left-hand threaded.
2. Make sure upper clevis (2) is in upper mount
hole.
3. Set turnbuckle length. Turn turnbuckle to
shorten or lengthen as necessary. Initially set
length to 17 1/2 inches between pin centers to
achieve the 24-inch dimension mentioned
above. When adjusting the turnbuckle length,
remember:
• Lengthening turnbuckle raises drill.
• Shortening turnbuckle lowers drill.
4. After adjusting both turnbuckles to the same
length, tighten jam nuts.
5. Level drill with top three-point link.
Refer to Figure 4
NOTE: When drill is level, parallel links will be
running slightly uphill towards the front.
The 1- to 1 1/2-inch dimension shown in is a gen-
eral dimension that will vary with planting condi-
tions.
Make sure the opener mount is running higher than
the opener body. This will ensure an ample reserve
for opener upfloat in case the opener strikes a rock or
other object.
Figure 2
Initial Operating Height
18279
Figure 3
Gauge-Wheel Turnbuckle
12067
Figure 4
Leveling the Drill
18289