GREAT PLAINS 1205NT, Operator'S Manual, Page: 3 / 64

1205NT Cover Index 0
3/7/19 Cover Index 150-131M
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Copyright 1999, 2001, 2003, 2005, 2006, 2012, 2015, 2017, 2019 All rights Reserved
Great Plains Manufacturing, Inc. provides this publication “as is” without warranty of any kind, either expressed or implied. While every precaution has been
taken in the preparation of this manual, Great Plains Manufacturing, Inc. assumes no responsibility for errors or omissions. Neither is any liability assumed
for damages resulting from the use of the information contained herein. Great Plains Manufacturing, Inc. reserves the right to revise and improve its products
as it sees fit. This publication describes the state of this product at the time of its publication, and may not reflect the product in the future.
Trademarks of Great Plains Manufacturing, Inc. include: AccuShot, Max-Chisel, Row-Pro,
Singulator Plus, Short Disk, Swath Command, Terra-Tine, Ultra-Chisel, and X-Press.
Registered Trademarks of Great Plains Manufacturing, Inc. include: Air-Pro, Clear-Shot, Discovator, Great Plains, Land Pride, MeterCone,
Nutri-Pro, Seed-Lok, Solid Stand, Terra-Guard, Turbo-Chisel, Turbo-Chopper, Turbo-Max, Turbo-Till, Ultra-Till, Whirlfilter, and Yield-Pro.
Brand and Product Names that appear and are owned by others are trademarks of their respective owners.
Printed in the United States of America
Table of Contents
Important Safety Information.................................................1
Safety Decals ....................................................................6
Introduction...........................................................................11
Description of Unit ...........................................................11
Intended Usage ........................................................11
Models Covered .......................................................11
Document Family .....................................................11
Using This Manual....................................................11
Definitions.................................................................11
Owner Assistance............................................................12
Further Assistance...........................................................12
Preparation and Setup .........................................................13
Hitching Tractor to Drill ....................................................13
Hitch Assembly.........................................................13
Hitch Height Adjustment...........................................14
Hitching to Tractor ....................................................14
Hydraulic Hose Hookup............................................15
Current Style Color-Coded Hose Handles ...............15
Rephasing Cylinders .......................................................16
Bleeding Hydraulics.........................................................16
Leveling Drill ....................................................................17
Operating Instructions .........................................................18
Prestart Checklist ............................................................18
Field Operation ................................................................19
Opener Operation.....................................................19
Marker Operation .....................................................19
Transporting ....................................................................20
Parking ............................................................................21
Adjustments ..........................................................................22
Coulter Adjustments ........................................................22
Coulter Depth Control...............................................22
Coulter Down Pressure Weights ..............................23
Spring Length ...........................................................23
Individual Coulter Adjustment...................................23
Opener Adjustments.................................................24
Opener Seeding Depth.............................................24
Disc Scraper Adjustment..........................................25
Gauge Wheel Idler Adjustment ................................25
Seeding Rate............................................................26
Select Drive Type .....................................................26
Set Seed Rate Handle..............................................26
Position Feed-Cup Doors .........................................27
Check Seed Rate .....................................................27
Equations for calibrating seed rate:..........................27
Seed Rate Chart (pounds per acre) ................................28
Wheat .............................................................................28
Wheat ............................................................................. 28
Rice ................................................................................ 28
Rice ................................................................................ 28
Rice ................................................................................28
Rice ................................................................................28
Barley ............................................................................. 28
Barley ............................................................................. 28
Barley ............................................................................. 28
Oats................................................................................ 28
Seed Rate Chart (con’t.)..................................................29
Rye ................................................................................. 29
Millet ............................................................................... 29
Buck Wheat ....................................................................29
Flax or Sudan ................................................................. 29
Sun ................................................................................. 29
flowers ............................................................................ 29
Soybeans .......................................................................29
Soybeans ....................................................................... 29
Soybeans ....................................................................... 29
Peas ............................................................................... 29
Pinto Beans .................................................................... 29
Alfalfa or Rape................................................................ 30
Milo................................................................................. 30
Wheat Grass .................................................................. 30
Small Seeds Attachment..........................................31
Equations for calibrating seed rate:..........................31
Small Seeds Attachment Seed Rate Chart .....................32
Acremeter Operation............................................................33
Gauge-Wheel Drive Adjustment......................................33
Fertilizer Meter Rate........................................................34
Equations for calibrating seed rate:..........................34
Fertilizer Rate Chart (pounds per acre)...........................35
Marker Adjustments .................................................36
Bleeding Marker Hydraulics .....................................36
Dual Markers with Sequence Valve .........................36
Single/Dual Markers without Sequence Valve .........37
Folding Speed with Sequence Valve .......................38
Folding Speed with Needle Valve ............................38
Marker Disk Adjustment ...........................................39
Marker Width Adjustment.........................................39
Seed Lok Lock Up ...........................................................39
Spring Tine Harrow .........................................................40