DOUBLE NO-TILL COULTER MANUAL
YETTER MANUFACTURING CO.
FOUNDED 1930
Colchester, IL 62326-0358
Toll free: 800/447-5777
309/776-3222 (Fax)
Website: www.yetterco.com
E-mail: info@yetterco.com
FOREWORD
You’ve just joined an exclusive but rapidly growing
club.
For our part, we want to welcome you to the group
and thank you for buying a Yetter product.
We hope your new Yetter products will help you
achieve both goals-increase your productivity and
increase your efficiency so that you may generate
more profit.
This operator’s manual has been designed into four
major sections: Foreword, Safety Precautions,
Installation Instructions and Parts Breakdown.
This SAFETY ALERT SYMBOL
indicates important safety messages in
the manual. When you see this symbol,
be alert to the possibility of PERSONAL INJURY
and carefully read the message that follows.
The word NOTE is used to convey information that
is out of context with the manual text. It contains
special information such as specifications,
techniques and reference information of a
supplementary nature.
The word IMPORTANT is used in the text when
immediate damage will occur to the machine due to
improper technique or operation. Important will
apply to the same information as specified by note
only of an immediate and urgent nature.
It is the responsibility of the user to read the
operator’s manual and comply with the safe and
correct operating procedure and to lubricate and
maintain the product according to the maintenance
schedule in the operator’s manual.
The user is responsible for inspecting his machine
and for having parts repaired or replaced when
continued use of the product would cause damage
or excessive wear to the other parts.
It is the user’s responsibility to deliver his machine
to the Yetter dealer who sold him the product for
service or replacement of defective parts, which are
covered by the warranty policy.
If you are unable to understand or follow the
instructions provided in this publication, consult
your local Yetter dealer or contact:
YETTER MANUFACTURING CO.
309/776-4111
800/447-5777
309/776-3222 (FAX)
Website: www.yetterco.com
E-mail: info@yetterco.com
WARRANTY
Yetter Manufacturing warrants all products manufactured and sold by it against defects in material. This
warranty being expressly limited to replacement at the factory of such parts or products as shall appear to be
defective after inspection. This warranty does not obligate the Company to bear cost of labor in replacement of
parts. It is the policy of the Company to make improvements without incurring obligations to add them to any
unit already sold. No warranty is made or authorized to be made, other than herein set forth. This warranty is in
effect for one year after purchase.
Dealer ___________________________________________________
Yetter Manufacturing warrants its own products only and cannot be responsible for damages to
equipment on which mounted.
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TABLE OF CONTENTS
FOREWORD………………………………………………………………………………2
WARRANTY……………………………………………………………………………….2
SAFETY……………………………………………………………………………………4
YETTER MODEL DOUBLE NO-TILL COULTER…………….……………………….5
INSTALLATION……………………………………………………….…………………..6
OPERATION.…….………………….…………………………………….……………...7
MAINTENANCE…………………………………………………………………………..7
PARTS IDENTIFICATION………………………………………………….………..8-13
TROUBLESHOOTING………………………….………………………………………14
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SAFETY
A brief description of signal words that may be used in this manual:
CAUTION: Used as a general reminder of good safety practices or to direct attention to unsafe
practices.
WARNING: Denotes a specific potential hazard.
DANGER: Denotes the most serious specific potential hazard.
SAFETY PRECAUTIONS
You can make your farm a safer place to live and work if you observe the safety precautions given.
Study these precautions carefully and insist that they be followed by those working with you and for
you.
Finally, remember this: an accident is usually caused by someone’s carelessness, neglect or
oversight.
! WARNING
Never clean, lubricate or adjust a machine that is in motion. Always lower or block the implement
before performing service.
If machine must be serviced in the raised position, jack or block it up to prevent it from accidentally
falling and injuring someone.
Do not allow riders on the tractor or implement.
Use speeds and caution dictated by the terrain being traversed. Do not operate on any slope steep
enough to cause tipping or loss of control.
Be sure all personnel are clear of the immediate area before operating.
Read and understand the operator’s manual and require all others persons who will operate the
equipment to do the same.
Be familiar with all tractor and implement controls and be prepared to stop engine and implements
quickly in an emergency.
! CAUTION
Consult your implement and tractor operator’s manual for correct and safe operating practices.
Beware of towed implement width and allow safe clearance.
FAILURE TO HEED MAY RESULT IN PERSONAL INJURY OR DEATH
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YETTER MODEL
DOUBLE NO-TILL COULTER
BLADES
2571-164 - 14-5/8" Wavy Blade (8 Wave)
2571-166 - 14-5/8" 25 M.W. Blade (25 Wave)
2571-161 - 16" Ripple Blade
2571-156 - 16" Wavy Blade (8 Wave)
2571-162 - 16" Shallow-Wave Blade (13 Wave)
CLAMPS
2990-154 - Clamp Kit, 2-1/2 Sq. Bar
2990-155 - Clamp Kit, 2 x 6 Bar
2990-156 - Clamp Kit, 4 x 4 Bar
2990-157 - Clamp Kit, 5 x 7 Bar
2990-158 - Clamp Kit, 7 x 7 Bar
2990-159 - Clamp Kit, 3" Diamond Bar
SHANKS
2990-310 - Shank, 12-5/8"
2990-318 - Shank, 16"
3010-303 - Shank, 22"
2990-328 - Shank, 26"
OPTIONAL EQUIPMENT
2975-120 Gauge Wheel Kit
2571-172 - 16" Multi-Wave Blade (25 Wave)
2571-167 - 17" Ripple Blade
2571-154 - 18" Wavy Blade (8 Wave)
2571-155 - 18" Shallow-Wave Blade (13 Wave)
2571-179 - 18" Multi-Wave Blade (25 Wave)
2990-160 - Clamp Kit, 3-1/2" Diamond Bar
2990-161 - Clamp Kit, 3 x 7 Bar
2990-163 - Clamp Kit, 3" Sq. Bar
2990-171 - Clamp Kit, 3 x 4 Bar
6300-105 - Clamp Kit, 5 x 5 Bar
2990-350 - Shank, 27-1/8"
3011-302 - Shank, 22" Long, 5" Offset
2990-208 - Shank, 12-5/8" Long, 3" Offset
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INSTALLATION
1. Assemble 3/8 x 2-1/2" roll pin into hole closest to end of 1-1/2" diameter shank, leaving approximately equal
amount protruding out each side. For 12-5/8" shank, end without hole is upper end.
2. Insert lock collar into pivot casting and slide shank up through casting and lock collar. If you wish to lock
coulter from pivoting, slide roll pin into slots in casting. If you wish to let coulter pivot, do not align roll pin
with casting slots, but slide shank up till roll pin contacts casting surface. Install and tighten 5/8 x 1"
setscrew in lock collar to 110ft. lb.
3. Mount 18" coulter blade loosely to hub using four 1/2 x 1-1/2" carriage bolts, lockwashers and nuts.
4. Mount fertilizer injector to injection arm with a 1/2 x 1-3/4" bolt gr. 5 in the bottom hole, 1/2 x 1-3/4" flathead
bolt, gr. 8 in the top hole, lockwashers and nuts. Place shims between injector and arm as needed to align
injector with blade. See Parts Identification on Page 9 for more detail.
5. Center blade on hub by rotating blade and watching clearance between injector and blade. Slide blade on
hub as required until the blade runs concentric, no run out on diameter. Tighten four 1/2" nuts to 120ft. lb.
The disc blade must run concentric.
Repeat Step 3-5 for second blade & injector.
6. Assemble clamp components loosely to planter front bar as shown in parts view of appropriate clamp. The
clamp setscrew must mount away from spring, see Page 10 or 11 for more detail.
7. Position coulter clamps either toward the inside or outside of the planter openers on each side of the planter
to equalize draft. Tighten four 1/2" nuts to secure the clamps.
8. Install coulters on planter by inserting shank up through clamps and tightening 5/8 x 1" setscrews.
9. Install 5/16 x 2-1/2" cotter pins in all vertical 1-1/2" diameter shanks. This cotter pin prevents loss of coulter
should the clamp setscrews work loose. Cotter pin can be installed between clamp castings or above top
casting depending on shank.
10. If you have elected to let coulter swivel, set lock collar to allow swivel in one or both directions as required.
If you have elected to hold coulter rigid, set coulter straight with the direction of travel. Tighten setscrew to
110ft. lb.
11. Set spring tension by adjusting 3/4" locknut till 1/8" of threads are exposed above the nut. Tighten 3/4"
locknut if greater spring pre-load is required.
12. Grease four fittings on each coulter before operation. The hub bearings should be greased only a few times
each season. Do not forget the lower parallel arm grease zerk.
NOTE: Check clearance of injectors and coulters. Coulters must be mounted so blade can always flex up and
clear drive shaft. Loosen and swivel hydraulic hoses up and out of the way to
coulter flexes.
provide clearance when
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OPERATION
Double No-Till coulters with injection are designed to apply fertilizer 3" to 5" deep. See your fertilizer
dealer for recommended depth and distance away from row for your particular fertilizer. A popular
placement setting is 2" below and 2" away from the seed. High deposit rates require the fertilizer to
be placed farther away from the row to avoid crop “burn”.
Double No-Till coulters can be set up to swivel or not swivel as required. By not allowing the coulter
to swivel, the distance between seed and fertilizer varies less when planting on contour.
When mounting Double No-Till coulters on 3-point or 2-point hitch planters, the coulters should be set
up to swivel, particularly if a 4-wheel drive tractor is used. This reduces the side load on the coulter
during operation. It is preferable to allow the coulter to swivel.
IMPORTANT: For proper operation, the planter frame must operate level and at the correct
height, usually 20"- 22" while in operation.
In hard no-till conditions the desired operating depth may not be possible. Tighten spring nut to
maintain depth if spring is flexing rather than lowering coulter to obtain maximum depth.
Planter weight may limit operating depth in hard conditions, particularly with mounted or semimounted planters. Be sure planter has enough weight to keep drive wheels on the ground during
operation or plant populations can be drastically affected.
1. Set coulter blades to run vertical to ground. Operating depth and blade wear can be affected if
coulter is mounted crooked. If coulters are set up to not swivel be sure they run straight with the
direction of travel.
2. After a few hours use, check all bolts and setscrews for tightness.
3. After a few days use, check coulter hubs for loose bearings. There should be no end play in the
hub bearings to allow it to wobble. If necessary, remove hub cap and cotter pin, adjust slotted nut
to remove wobble, reinsert cotter pin and replace hub cap.
MAINTENANCE
Each coulter is equipped with five grease zerks. To ensure longevity and reliability of the coulter, the
following lubrication schedule should be followed:
1 Lower Parallel Arm Daily
2 Pivot Casting Daily
2 Hub Bearings Each Season
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PARTS IDENTIFICATION
Double No-Till Coulter Assembly
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PARTS IDENTIFICATION
Double No-Till Coulter w/Spring Tine Injection
9
PARTS IDENTIFICATION
(2995-209 – DOUBLE COULTER ARM) R.H. W.A.
REQUIRES TWO 2995-109 KITS
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PARTS IDENTIFICATION
2990-154 Clamp Kit, 2-1/2” Sq. Bar 2990-155 Clamp Kit, 2 x 6 Bar
Key Qty. Part No. Description Key Qty. Part No. Description
1 4 2502-368 1/2-13 x 5-1/2” HHCS GR. 5 ZP 1 4 2502-362 1/2-13 X 5” HHCS GR. 5 ZP
2 2 2990-313 Clamp Plate, 2-1/2 Square Bar 2 2 2990-322 Clamp Plate, 2 x 6 Bar
3 2 2990-360 Clamp Casting, Drilled 3 2 2990-360 Clamp Casting, Drilled
4 2 2503-379 5/8-11 x 1 Sq. HCPSS Gr. 5 ZP 4 2 2503-379 5/8-11 x 1 Sq. HCPSS Gr. 5 ZP
5 4 2520-357 1/2-13 Hex Lock Nut ZP 5 4 2520-357 1/2-13 Hex Lock Nut ZP
6 1 2515-690 5/8 OD Vinyl Tube, Cut 1-1/2”
2990-156 Clamp Kit, 4 x 4 Bar 2990-157 Clamp Kit, 5 x 7 Bar
Key Qty. Part No. Description Key Qty. Part No. Description
1 4 2502-371 1/2-13 x 7” HHCS GR. 5 ZP 1 4 2502-369 1/2-13 X 8” HHCS GR. 5 ZP
2 2 2990-314 Clamp Plate, 4” Sq. & 3” Diamond Bar 2 2 2990-315 Clamp Plate, 5 x 7 or 7x 7 Bar
3 2 2990-360 Clamp Casting, Drilled 3 2 2990-360 Clamp Casting, Drilled
4 2 2503-379 5/8-11 x 1 Sq. HCPSS Gr. 5 ZP 4 2 2503-379 5/8-11 x 1 Sq. HCPSS Gr. 5 ZP
5 4 2520-357 1/2-13 Hex Lock Nut ZP 5 4 2520-357 1/2-13 Hex Lock Nut ZP
NOTE: The 5/8” OD vinyl tube provided in 2990-154, 2990-158, 2990-161 and 2990-163 is required on implements using a 5/8” ID hose.
2990-158 Clamp Kit, 7 x 7 Bar 2990-161 Clamp Kit, 3 x 7 Bar
Key Qty. Part No. Description Key Qty. Part No. Description
1 4 2502-376 1/2-13 x 10” HHCS GR. 5 ZP 1 4 2502-373 1/2-13 X 6” HHCS GR. 5 ZP
2 2 2990-315 Clamp Plate, 5 x 7 or 7 x 7 Bar 2 2 2990-315 Clamp Plate, 5 x 7 or 7 x 7 Bar
3 2 2990-360 Clamp Casting, Drilled 3 2 2990-360 Clamp Casting, Drilled
4 2 2503-379 5/8-11 x 1 Sq. HCPSS Gr. 5 ZP 4 2 2503-379 5/8-11 x 1 Sq. HCPSS Gr. 5 ZP
5 4 2520-357 1/2-13 Hex Lock Nut ZP 5 4 2520-357 1/2-13 Hex Lock Nut ZP
6 1 2515-690 5/8 OD Vinyl Tube, Cut 1-1/2” 6 1 2515-690 5/8 OD Vinyl Tube, Cut 1-1/2”
2990-163 Clamp Kit, 3 x 3 Bar 2990-171 Clamp Kit, 3 x 4 Bar
Key Qty. Part No. Description Key Qty. Part No. Description
1 4 2502-373 1/2-13 x 6” HHCS GR. 5 ZP 1 4 2502-373 1/2-13 X 6” HHCS GR. 5 ZP
2 2 2990-339 Clamp Plate, 3” Square Bar 2 2 2990-314 Clamp Plate, 4” Sq. & 3” Dmd Bar
3 2 2990-360 Clamp Casting, Drilled 3 2 2990-360 Clamp Casting, Drilled
4 2 2503-379 5/8-11 x 1 Sq. HCPSS Gr. 5 ZP 4 2 2503-379 5/8-11 x 1 Sq. HCPSS Gr. 5 ZP
5 4 2520-357 1/2-13 Hex Lock Nut ZP 5 4 2520-357 1/2-13 Hex Lock Nut ZP
6 1 2515-690 5/8 OD Vinyl Tube, Cut 1-1/2” 6 1 2515-690 5/8 OD Vinyl Tube, Cut 1-1/2”
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PARTS IDENTIFICATION
2990-159 Clamp Kit, 3” Diamond Bar
Key Qty. Part No. Description
1 4 2502-369 1/2-13 x 8” HHCS Gr. 5 ZP
2 2 2990-314 Clamp Plate, 4” Sq. or 3” Diamond
3 2 2970-326 Adaptor, 3” Sq. Diamond Bar
4 2 2990-360 Clamp Casting, Drilled
5 2 2503-379 5/8-11 x 1” Sq. HCPSS Gr. 5 ZP
6 4 2520-352 1/2-13 Lock Hex Nut ZP
2990-160 Clamp Kit, 3-1/2” Diamond Bar
Key Qty. Part No. Description
1 4 2502-374 1/2-13 x 9” HHCS Gr. 5 ZP
2 2 2990-316 Clamp Plate, 3-1/2” Diamond Bar
3 2 2970-327 Adaptor, 3-1/2” Sq. Diamond Bar
4 2 2990-360 Clamp Casting, Drilled
5 2 2503-379 5/8-11 x 1” Sq. HCPSS Gr. 5 ZP
6 4 2520-352 1/2-13 Lock Hex Nut ZP
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PARTS IDENTIFICATION
NOTE: 9” Diameter gauge wheel for 4” fertilizer placement depth*
11” Diameter gauge wheel for 3” fertilizer placement depth*
*Fertilizer placement depths are approximate depending on soil conditions.
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Problem
Setting coulter
Blade not penetrating.
Spring not deflecting.
Fertilizer too deep.
Fertilizer too shallow.
Blade not rotating properly.
TROUBLESHOOTING
Cause
Planter not set correctly.
Insufficient coulter spring
pressure.
Coulter incorrectly
installed.
Excessive spring pressure.
Spring not deflecting.
Coulter incorrectly
installed.
Lack of depth control.
Planter frame too low.
Blade not penetrating.
Coulter incorrectly
installed.
Incorrect depth control
Loose soil
Solution
Ensure that in operation
the planter frame is at
correct height (20"-22") and
level the toolbar.
Tighten coulter spring
locknut down 1" further.
Adjust height of coulter by
sliding shank down.
Back off coulter spring
locknut to 1/8" of thread
exposed.
Back off coulter spring
locknut to 1/8" of thread
exposed.
Adjust height of coulter by
sliding shank up.
Install gauge wheel kit part
no. 2975-120.
Raise planter frame to
correct height.
Tighten coulter spring
locknut down 1" further.
Adjust height of coulter by
sliding shank down.
Use gauge wheel kit part
no. 2975-120.
Coulter works best in firmer
soil.
14
NOTES:
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Our name
Is getting known
Just a few years ago, Yetter products were sold primarily to the
Midwest only. Then we embarked on a program of expansion and
moved into the East, the South, the West and now north into Canada.
We’re even getting orders from as far away as Australia and Africa.
So, when you buy Yetter products . . .you’re buying a name that’s
recognized. A name that’s known and respected. A name that’s
become a part of American agriculture and has become synonymous
with quality and satisfaction in the field of conservation tillage.
Thank you.
YETTER MANUFACTURING CO.
Colchester, IL 62326-0358 309/776-4111
Toll Free 800/447-5777
Fax 309/776-3222
Website: www.yetterco.com
E-mail: info@yetterco.com
2565-416 03/08 Great River Printing, Hamilton, IL
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