Yetter 5000 SERIES User manual

5000 SERIES STALK DEVASTATOR
CORN STALK ROLLER
*PATENTED*
5000-025D, 5000-026D, 5000-027D, 5000-028D, 5000-034C
John Deere Model Corn Heads (606C, 643, 693, 706C, C6R, 608C,
843, 893, 708C, C8R, 612C, 612FC Folding, 712C, 1243, 1293,
C12F, C12R, 616C, 716C, & C16R)
OWNER’S MANUAL
PART IDENTIFICATION
2565-785_Rev_H –03/2024
YETTER MANUFACTURING CO.
Founded 1930
Colchester, IL 62326
Toll free: [phone].
Fax: [phone]
Website: yetterco.com
E-mail: [e-mail]

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DEVASTATOR OPERATION CHECKLIST
Please fill this out after the Yetter Stalk Devastator has been installed.
DATE____/____/____ YETTER KIT # - 5000-____ CORN HEAD MAKE/MODEL___________________
COMBINE MAKE/MODEL__________________ FRONT TIRE SIZE______________ REAR TIRE SIZE______________
REAR AXLE POSITION______________ SNAPPING ROLLS USING______________ CHOPPING BLADES YES / NO
DECK PLATE ANGLE_____° (USE ANGLE FINDER) SNAPPING ROLL HEIGHT (OPERATING POSITION)____INCHES
HARVEST SPEED______MPH HEAD SPEAD_______ ANGLE TORSION ARM (OPERATING POSITION - USE ANGLE FINDER)____
HEAD CART INFO:
MAKE/MODEL___________________ LENGTH____________ TIRE SIZE_______________________
Table of Contents
Foreword...........................................................................................................................3
Warranty............................................................................................................................3
Safety Information.......................................................................................................4 - 6
Bolt Torque & Tools Required.........................................................................................8
Assembly Instructions............................................................................................11 - 36
5000-025D ....................................................................................9-13
5000-026D ...................................................................................14-18
5000-027D ...................................................................................19-23
5000-028D ...................................................................................24-29
5000-034C ..................................................................................3 30-34
Operation / Maintenance / Lock Up...............................................................................35
Part Identification...................................................................................................36 –45
Troubleshooting.............................................................................................................47
FOREWORD

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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: [email protected]
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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BE ALERT!
YOUR SAFETY IS INVOLVED
WATCH FOR THIS SYMBOL. IT POINTS OUT IMPORTANT SAFETY
PRECAUTIONS. IT MEANS “ATTENTION – BE ALERT!”
It is your responsibility as an owner, operator, or supervision to know and
instruct everyone using this machine at the time of initial assignment and at
least annually thereafter, of the proper operation, precautions, and work
hazards which exist in the operation of the machine in accordance with
OSHA regulations.
Safety Is No Accident
The following safety instructions, combined with common sense, will
save your equipment from needless damage and the operator from
unnecessary exposure to personal hazard. Pay special attention to
the caution notes in the text. Review this manual at least once a year
with all operators.
1. Read and understand the operator’s manual before operating this machine.
Failure to do so is considered a misuse of the equipment.
2. Make sure equipment is secure before operating.
3. Always keep children away from equipment when operating.
4. Make sure everyone that is not directly involved with the operation is out of the
work area before beginning operation.
5. Make sure all safety devices, shields, and guards are in place and functional
before beginning operation
6. Shut off all power to adjust, service, or clean.
7. Keep hands, feet, and clothing away from moving parts. It is a good idea to
remove all jewelry before operating.
8. Inspect the machine periodically during operation for signs of excessive wear,
loose fasteners, and unusual noises.

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PLEASE READ, VERY IMPORTANT
SECURE CORN HEADER AGAINST UNWANTED LOWERING BY
APPLYING THE LOCKING MECHANISM ON THE HYDRAULIC CYLINDERS!
1. Attach head to combine, lock head to combine
2. Raise the head off the ground and engage safety stop on the feeder house cylinder.
3. Apply combine parking brake, turn off combine engine, and remove the key
4. Wear personal protective equipment during installation: steel toe footwear, safety
glasses, & gloves
FOLLOW ALL INSTRUCTIONS GIVEN BY THE COMBINE
MANUFACTURER

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PLEASE READ, VERY IMPORTANT
Subject to the size and weight of the corn header, one
or two additional hydraulic cylinders may be required.
The combine manufacturer generally keeps
corresponding kits readily available for dealers.
Subject to the design of the corn header and the
carrying capacity of different combines, the steering
axle may require the fitting of additional weights and
the rear tires be filled with ballast.
FOLLOW ALL INSTRUCTIONS GIVEN BY THE COMBINE
MANUFACTURER

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BEFORE INSTALLATION BEGINS, PLEASE CHECK THAT ALL PARTS WERE
RECEIVED BY GOING THROUGH THE CRATE AND SORTING THE PARTS!!!
5000-025D –JD 606C, 643, 693, 706C, C6R & Wheel tracks only for 612C, 712, 1243, 1293, C12F/R, 616C, 716 &
C16F/R Part List: 1) 5000-165, 4) 5000-190, 4) 5000-191, 2) 5000-2010, 2) 5000-2011, 4) 5000-202, 2) 5000-272,
2) 5000-275A, 4) 5000-355
5000-026D –JD 608C, 708C, 843, 893, & C8R Part List: 1) 5000-165, 6) 5000-190, 6) 5000-191, 2) 5000-192,
3) 5000-2010, 3) 5000-2011, 6) 5000-202, 1) 5000-203B, 1) 5000-255, 2) 5000-272, 2) 5000-275A, 6) 5000-355
5000-027D –JD 612C, 712C, 1243, 1293, C12F & C12R Part List: 1) 5000-165, 8) 5000-190, 8) 5000-191,
2) 5000-192, 4) 5000-2010, 4) 5000-2011, 8) 5000-202, 4) 5000-272, 4) 5000-275A, 8) 5000-355
5000-028D –JD 616C, 716C, & C16R Part List: 1) 5000-165, 12) 5000-190, 12) 5000-191, 6) 5000-2010,
6) 5000-2011, 12) 5000-202, 2) 5000-203B, 2) 5000-255, 4) 5000-272, 4) 5000-275A, 12) 5000-355
5000-034C –JD 612FC, 712FC Folding Part List: 1) 5000-165, 8) 5000-190, 4) 5000-191, 4) 5000-193,
2) 5000-2010, 6) 5000-2011, 4) 5000-202, 4) 5000-263, 4) 5000-272, 4) 5000-275A, 8) 5000-355

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BOLT TORQUE
Important: Over-tightening hardware can cause just as much damage as under-tightening.
Tightening hardware beyond the recommended range can reduce its shock load capacity.
All hardware on the 5000 Devastator is either Grade 5 or Grade 8, unless otherwise noted. Grade 5 cap
screws are marked with three radial lines on the head. Grade 8 cap screws are marked with six radial
lines on the head. If hardware must be replaced, be sure to replace it with hardware of equal size,
strength and thread type. Refer to the torque values chart when tightening hardware.
The chart below is a guide for proper torque. Use it unless a specified torque is called out elsewhere in
the manual.
Torque is the force applied to the end of the handle or cheater bar, times the length of the handle or bar.
Use a torque wrench wherever possible
The following table shows torque in ft.-lbs. for coarse thread hardware.
INSTALLATION TOOLS REQUIRED:
- Pneumatic or electric impact driver
- ¾ & 15/16 size sockets
- 10” impact driver extension
- Ratchet
- ¾, 15/16, & 1 1/8 size wrenches
- 5/16 Allen Wrench
- Torque Wrench

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5000-025D ASSEMBLY INSTRUCTIONS
(606C, 643, 693, 706C, C6R or Wheel Track only on 12 & 16 row JD corn heads)
Step 1: Attach the 5000-202 mount brackets to the frame using the 5/8 x 6 bolts, mounting straps, and 5/8” lock hex nuts.
Mounting Brackets will be located under the snouts between rows 1 & 2, 2 & 3, 4 & 5, and 5 & 6. Slide the mount bracket up so
the deck plate adjustment rod is located in the cut out of the mount bracket. . If corn head is equipped with protective shield
(like pic with the arrow shows), you can either: remove each shield, cut a notch in each shield, or bend each shield upwards to
gain clearance. The shields on a 90 series head will need removed.
Note: Do not fully tighten hardware until Step 6 after all of the pivot arms & springs are installed.
6 Row
Arrows indicate 5000-202 mount bracket locations, mounts will go on front side of frame, straps on back side of frame.
12 Row Wheel Tracks
Arrows indicate 5000-202 mount bracket locations (rows 3/4 & 4/5 and 8/9 & 9/10 could also be used)
16 Row Wheel Tracks
Arrows indicate 5000-202 mount bracket locations (rows 5/6 & 6/7 and 9/10 & 10/11 could also be used)

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5000-025D ASSEMBLY INSTRUCTIONS
Step 2: Attach the 5000-309 support straps using ½” x 2 carriage bolts & ½” flange lock nuts, tighten.
Step 3: Install 5000-323 lock-up pin in storage location on each mount bracket. Secure with hairpin clips.

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5000-025D ASSEMBLY INSTRUCTIONS
Step 4: Attach the pivot arms to the mount brackets using 5/8” X 3” bolts, pivot
bushings, & lock hex nuts. Use the model below to determine where the LH & RH pivot
arms get installed. Tighten this hardware.
Step 5: Install the push rods into the mount brackets then attach to the pivot arms with
the 5/8” shoulder bolts, washers, and ½” jam lock nuts.
Note: The washers are installed on each side of the “eye” of the push rod.
Now install the compression spring, spring bushing, and ¾” lock hex nuts. Tighten the
hardware from Step 5 to the specification in the diagram below.
NOTE: Tightening the nut on the spring bushing more will result in added
down pressure.

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5000-025D ASSEMBLY INSTRUCTIONS
Step 6: Secure the mounting bracket installed in Step 1 at this time by tightening the 5/8 X 6” bolts & 5/8 lock nuts.
Make sure the compression spring clears the cylinder channel as well as the rocker arm of the deck plate adjustment.
The offset pivot arm clamp (5000-2010 & 5000-2011) should be under the center of the snout, not directly under the
row. Row 1 & 2 Row 2 & 3
Row 4 & 5 Row 5 & 6
Note: On 12 row heads installing on wheel tracks only, the top pictures on this page will illustrate
rows 4 & 5 and 5 & 6. The bottom pictures on this page will illustrate rows 7 & 8 and 8 & 9.
Note: On 16 row heads installing on wheel tracks only, the top pictures on this page will illustrate
rows 6 & 7 and 7 & 8. The bottom pictures on this page will illustrate rows 9 & 10 and 10 & 11.

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5000-025D ASSEMBLY INSTRUCTIONS
Step 7: Install the Roller Arm Mount Tube to the pivot arms. Do not tighten this hardware until after the rollers
have been installed in Step 8.
NOTE: Install the Roller Arm Mount Tube on so that the bearing support tab is on the back side to help support
the bearings.
Step 8: Insert the shim washer over the shaft on each end of the roller. Install the bearing over the shaft on each
end of the roller so that the side of the casting that has the bearing protruding past the housing surface is towards
the roller barrel & shim washer. Lift each roller into place, traction bar in front of the rebar, so that the bolt holes
on the cast line up with the mounting tabs on the roller arm mount tube. Install the ½” X 2 ½” bolts & tighten the
½” lock nuts. Once the roller & bearing hardware is fastened, spin the roller to ensure the bearing was installed
correctly. If the roller was installed incorrectly, the roller will not spin or will have drag. Slide the roller mount tube
to gain clearance on each end of the corn head & then tighten the hardware from Step 7. The traction bars DO
NOT have to be directly centered under each row.
NOTE: BEARING HOUSING SHOULD BE LUBRICATED WITH POLYUREA GREASE BEFORE USE AND THEN EVERY 100 HOURS OF OPERATION

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5000-026D ASSEMBLY INSTRUCTIONS
(JD 608C, 708C, 843, 893, & C8R)
Step 1: Attach the 5000-202 mount brackets to the frame using the 5/8 x 6 bolts, mounting straps, & 5/8” lock hex nuts.
Mounting Brackets will be located under the snouts between rows 1 & 2, 2 & 3, 3 & 4, 5 & 6, 6 & 7, and 7 & 8. Slide the mount
bracket up so the deck plate adjustment rod is located in the cut out of the mount bracket. On JD 893 corn heads, use the
5000-301 L Clamp Plate with the mounting brackets between rows 1 & 2 and 7 & 8 If corn head is equipped with protective
shield (like pic with the arrow shows), you can either: remove each shield, cut a notch in each shield, or bend each shield
upwards to gain clearance. The shields on a 90 series head will need removed.
Note: Do not fully tighten hardware until Step 6 after all of the pivot arms & springs are installed.
Arrows indicate 5000-202 mount bracket locations, mounts will go on front side of frame, straps on back side of frame.

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5000-026D ASSEMBLY INSTRUCTIONS
Step 2: Attach the 5000-309 support straps using ½” x 2” carriage bolts & ½” flange lock nuts, tighten.
Step 3: Install 5000-323 lock-up pin in storage location on each mount bracket. Secure with hairpin clips.

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5000-026D ASSEMBLY INSTRUCTIONS
Step 4: Attach the pivot arms to the mount brackets using 5/8” X 3” bolts, pivot
bushings, & 5/8” lock hex nuts. Use the model below to determine where the LH & RH
pivot arms get installed. Tighten this hardware.
Step 5: Install the push rods into the mount brackets then attach to the pivot arms with
the 5/8” shoulder bolts, washers, and ½” jam lock nuts.
Note: The washers are installed on each side of the “eye” of the push rod.
Now install the compression spring, spring bushing, and ¾” lock hex nuts. Tighten the
hardware from Step 5 to the specification in the diagram below.
NOTE: Tightening the nut on the spring bushing more will result in added
down pressure.

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5000-026D ASSEMBLY INSTRUCTIONS
Step 6: Secure the mounting bracket installed in Step 1 at this time by tightening the 5/8 X 6” bolts & 5/8”
lock nuts. Make sure the compression spring clears the cylinder channel as well as the rocker arm of the
deck plate adjustment. The offset pivot arm clamp should be under the snout, not directly under the row.
Row 1 & 2 Row 2 & 3 Row 3 & 4
Row 5 & 6 Row 6 & 7 Row 7 & 8

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5000-026D ASSEMBLY INSTRUCTIONS
Step 7: Install the Roller Arm Mount Tube to the pivot arms. Do not tighten this hardware until after the rollers
have been installed in Step 8.
NOTE: Install the 2 & 3 row Roller Arm Mount Tube on so that the bearing support tab is on the back side to
help support the bearings.
Step 8: Insert the shim washer over the shaft on each end of the roller. Install the bearing over the shaft on each
end of the roller so that the side of the casting that has the bearing protruding past the housing surface is towards
the roller barrel & shim washer. Lift each roller into place, traction bar in front of the rebar, so that the bolt holes
on the cast line up with the mounting tabs on the roller arm mount tube. Install the ½” X 2 ½” bolts and tighten the
½” lock nuts. Once the roller & bearing hardware is fastened, spin the roller to ensure the bearing was installed
correctly. If the roller was installed incorrectly, the roller will not spin or will have drag. Slide the roller mount tube
to gain clearance on each end of the corn head & then tighten the hardware from Step 7. The traction bars DO
NOT have to be directly centered under each row.
NOTE: BEARING HOUSING SHOULD BE LUBRICATED WITH POLYUREA GREASE BEFORE USE AND THEN EVERY 100 HOURS OF OPERATION

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5000-027D ASSEMBLY INSTRUCTIONS
(JD 612C, 712C, 1243, 1293, C12F & C12R)
Step 1: Attach the 5000-202 mount brackets to the frame using the 5/8 x 6 bolts, mounting straps, & 5/8” lock hex nuts.
Mounting Brackets will be located under the snouts between rows 1 & 2, 2 & 3, 4 & 5, 5 & 6, 7 & 8, 8 & 9, 10 & 11, and 11 &
12. Slide the mount bracket up so the deck plate adjustment rod is located in the cut out of the mount bracket. On JD 1293
corn heads, use the 5000-301 L Clamp Plate with the mounting brackets between rows 2 & 3 and 10 & 11. If corn head is
equipped with protective shield (like pic with the arrow shows), you can either: remove each shield, cut a notch in each shield,
or bend each shield upwards to gain clearance. The shields on a 90 series head will need removed.
Note: Do not fully tighten hardware until Step 6 after all of the pivot arms & springs are installed.
Arrows indicate 5000-202 mount bracket locations, mounts will go on front side of frame, straps on back side of frame.

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5000-027D ASSEMBLY INSTRUCTIONS
Step 2: Attach the 5000-309 support straps using ½” x 2” carriage bolts & ½” flange lock nuts, tighten.
Step 3: Install 5000-323 lock-up pin in storage location on each mount bracket. Secure with hairpin clips.