Great Plains 800 Operator Manual - Manual (Page 31)

2011-10-25 Table of Contents Index 175-057M
Great Plains Manufacturing, Inc. Table of Contents Index 27
Adjustments
To get full performance from your drill, you need an
understanding of all component operations, and many
provide adjustments for optimal field results.
The Model 800 has double-disc 00 Series openers with
depth-controlling press wheels mounted on floating
opener frames. Opener bodies are staggered for easy
soil flow. All openers pivot on a common axis to maintain
consistent depth as the opener frames follow contours. A
spring provides the down pressure necessary for opener
double discs to open a seed furrow. The spring allows
openers to float down into depressions and up over
obstructions. Individual openers can be adjusted to
account for tire tracks.
Even if your planting conditions rarely change, some of
these adjustment items need periodic attention due to
normal wear.
Seed and Fertilizer Rate
Materials are applied by fluted feed meters driven by the
left end wheel. Independent mechanisms drive main
seed, fertilizer and optional small seeds application.
Main Box Seed rate is controlled by adjustments for:
• Drive Type gearbox lever
• Seed Rate Handle at box (drill front)
• Feed Cup Door (one each seed tube)
Fertilizer rate is controlled by:
• Rate Adjuster at box (drill rear)
Small Seeds rate is controlled by:
• Rate Handle at box (drill rear)
Planting Depth
Setting nominal planting depth, and achieving it
consistently, is affected by multiple adjustable drill
functions, from greatest to least effect they are:
• Opener Depth (Press Wheel Height)
• Opener Frame Down-Force,
• Row Unit Down Pressure (Spring),
• Opener Height, and;
• Disc Blade Adjustments (as blades wear).
Adjustment Page The Adjustment Affects
Setting Main Box Seed Rate SRM
a
a. SRM: Seed Rate Manual: This adjustment is described in manual 175-075B.
Setting Drive Type SRM
a
Coarse control of seeding rate
Main Box Seed Rate Handle SRM
a
Fine control of seeding rate
Position Seed Cup Doors SRM
a
Consistent seed delivery for certain seed sizes
Setting Fertilizer Rate SRM
a
Fine control of application rate
Small Seeds Rate SRM
a
Small seeds population
Hitch Preparation 12
Adjusting the Drill Hitch 12 Frame Level
Leveling the Drill 14 Frame Level
Opener Frame Down-Force 28 Consistent seeding depth
Row Unit Adjustments 29
Opener Height 30 Seeding depth in tire tracks
Row Unit Down Pressure (Spring) 30 Level row units and consistent seeding depth in tire tracks
Disc Blade Adjustments 31 Consistent seeding depth
Disc Scraper Adjustments 31 Consistent seeding depth
Seed Firmer Adjustments 32 Consistent seed placement and coverage
Fertilizer Tube Adjustment 33 Optimal fertilizer placement
Opener Depth (Press Wheel Height) 33 Seeding depth.