Adjustments, Planting depth, Seed rates – Great Plains 606NT Operator Manual User Manual

Page 33

2014-02-10

Table of Contents

Index

151-061M

Great Plains Manufacturing, Inc.

Table of Contents

Index

Adjustments

To get full performance from your drill, you need an
understanding of all component operations, and many
provide adjustments for optimal field results. Some of
these have been covered earlier in this manual.

Even if your planting conditions rarely change, some
items need periodic adjustment due to normal wear.

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)

• Coulter depth

• Opener down-pressure (spring)

• Opener frame down-force (optional weights)

• Row unit down-pressure spring

• Opener (tool bar) height

• Disc blade adjustments (as discs wear)

Seed Rates
Seeds are applied by fluted feed meters driven by the left
end or center gauge wheel. Independent mechanisms
control the rate for each box. Changing one rate does not
affect the rate of other boxes.

Rate setting details are in Seed Rate manual 151-122B.

Main Box seed rate is controlled by adjustments for:

• Drive Type gearbox lever

• Rate handle at seed box (drill front)

• Feed Cup Door handle (one each seed tube)

Native Grass (Option) Seed rate is controlled by:

• Sprocket pairings at drill front

• Rate Reduction kit (if used)

Small Seeds (Option) rate is controlled by a Rate
Handle (drill rear).

Adjustment

Page

The Adjustment Affects