MacDon 974 User Manual
Model 973
COMBINE HEADER
Model 974
FLEX DRAPER
COMBINE HEADER
OPERATOR’S MANUAL
Form 147083 Issue 01/07
Sugg. Retail: $15.00
Inside Front Cover
(blank)
INTRODUCTION
Your new 973/974 Header is specially designed as a “straight cut” header, to be attached to your combine
using a model 873 Adapter. These headers are equipped to work well in all straight cut conditions, whether
cutting on or above the ground. When weather is not a critical factor, straight cutting eliminates the windrowing
operation.
NOTE: This manual contains information on the Header only. It must be used in conjunction with your Adapter
and Combine Operator's Manual.
CAREFULLY READ ALL MANUALS TO BECOME FAMILIAR WITH RECOMMENDED PROCEDURES
BEFORE ATTEMPTING TO UNLOAD, ASSEMBLE OR USE THE MACHINE.
Use this manual as your first source of information about the header. If you follow the instructions given in this
manual your Header will work well for many years.
This manual contains information on "Safety", "Operation" and "Maintenance/Service". In addition, "Unloading
and Assembly" instruction is given towards the back of this book.
Use the Table of Contents and the Index to guide you to specific areas. Study the Table of Contents to
familiarise yourself with how the material is organised.
Keep this manual handy for frequent reference and to pass on to new operators or owners. Call your dealer if
you need assistance, information or additional copies of the manual.
NOTE: Right hand (R/H) and Left-hand (L/H) designations are determined from the operator’s position, facing
forward.
NOTE: A storage case for this manual is located under the left endsheet.
Form # 147083
1
Issue 01/07
INTRODUCTION.........................................................................................................................................1
SERIAL NUMBER LOCATION ...................................................................................................................5
SAFETY
Safety Alert Symbol................................................................................................................................6
Signal Words..........................................................................................................................................6
Safety Signs...........................................................................................................................................7
General Farm Safety..........................................................................................................................8, 9
SPECIFICATIONS
Header .................................................................................................................................................10
Upper Cross Auger .............................................................................................................................10
Hardware Torque Specifications..........................................................................................................11
Hydraulic Fittings Torque Specifications..............................................................................................12
HEADER OPERATION
Your Responsibilities as an Owner/Operator.......................................................................................13
Break-In Period ....................................................................................................................................14
Pre-Starting Checks: Annual................................................................................................................15
Pre-Starting Checks: Daily...................................................................................................................15
Operate Correctly.................................................................................................................................16
Header Controls...................................................................................................................................17
Header Lift Cylinder Stops ...................................................................................................................17
Reel Props ...........................................................................................................................................17
Operating Variables ...........................................................................................................................18
Cutting Height (Gauge Wheels & Skid Shoes)............................................................................18, 19
Divider Rod Length............................................................................................................................20
Ground Speed...................................................................................................................................21
Header Flotation........................................................................................................................ 22 - 24
Header Angle ....................................................................................................................................25
Draper Speed....................................................................................................................................25
Delivery Opening Width...............................................................................................................26, 27
End Delivery: Windrowing with the Combine ....................................................................................28
Reel Speed........................................................................................................................................29
Reel Height........................................................................................................................................29
Reel Fore-Aft Position .......................................................................................................................30
Reel Pick-Up Finger Pitch .................................................................................................................31
Upper Cross Auger (Optional)...........................................................................................................32
Shut-Down Procedure..........................................................................................................................33
Unplugging the Header ........................................................................................................................33
Transporting the Header on Combine..................................................................................................34
Storage Procedure...............................................................................................................................35
TABLE OF CONTENTS
Form # 147083
2
Issue 01/07
TABLE OF CONTENTS
MAINTENANCE/SERVICE
Service Procedures..............................................................................................................................36
Recommended Lubricants ...................................................................................................................37
Sealed Bearing Installation ..................................................................................................................37
Greasing the Header.................................................................................................................... 38 - 41
Hydraulic System
Hydraulic System Safety ...................................................................................................................42
Hoses and Lines................................................................................................................................42
Hydraulic Schematic – Reel Lift ........................................................................................................42
Hydraulic Schematic – Reel & Conveyor Drives .........................................................................43, 44
Sickle and Sickle Drive
Sickle Lubrication ..............................................................................................................................45
Sickle Sections..................................................................................................................................45
Sickle Removal..................................................................................................................................46
Sickle Head Needle Bearing Installation ...........................................................................................46
Sickle Installation...............................................................................................................................47
Spare Sickle Storage.........................................................................................................................48
Sickle Guards....................................................................................................................................48
Sickle Hold-Downs ............................................................................................................................49
Wobble Box.......................................................................................................................................50
Sickle Drive Belt Tension ..................................................................................................................51
Drapers
Draper Tension Adjustment...............................................................................................................52
Replacing Drapers.............................................................................................................................52
Idler Roller Positioning ......................................................................................................................53
Draper Tracking Adjustment..............................................................................................................54
Idler Roller Maintenance ...................................................................................................................54
Drive Roller Maintenance..................................................................................................................55
Deck Height.......................................................................................................................................55
Reel and Reel Drive
Reel Clearance to Cutterbar..............................................................................................................56
Reel "Frown" Adjustment ..................................................................................................................56
Reel Plastic Finger Installation & Removal .......................................................................................57
Centering the Reel ............................................................................................................................58
Reel Drive Chain ...............................................................................................................................58
Removal of Reel Drive Shaft.............................................................................................................58
Gauge Wheels.....................................................................................................................................59
Maintenance Schedule.........................................................................................................................60
Maintenance Record............................................................................................................................61
TROUBLE SHOOTING
Crop Loss at Cutterbar...................................................................................................................62, 63
Cutting Action & Sickle Components ........................................................................................... 63 - 65
Reel Delivery..................................................................................................................................65, 66
Header .................................................................................................................................................66
Drapers & Decks..................................................................................................................................67
Flex Header..........................................................................................................................................68
Cutting Edible Beans.................................................................................................................... 69 - 72
Form # 147083
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Issue 01/07
TABLE OF CONTENTS
OPTIONS AND ATTACHMENTS
Adjustable Outboard Skid Shoes with Poly Cover ...............................................................................73
Cutterbar Poly Wear Strips & Inboard Shoes with Poly Cover.............................................................73
Hydraulic Top Center Link....................................................................................................................73
Floating Divider ....................................................................................................................................73
Upper Cross Auger ..............................................................................................................................74
Gauge Wheels .....................................................................................................................................74
Gauge Wheels/Slow Speed Transport – 30’, 36’ & 39’........................................................................74
Crop Lifter Storage Rack......................................................................................................................74
36’ & 39’ Header: R/H Deck Split Kit....................................................................................................75
High Speed Reel Drive Sprocket .........................................................................................................75
Tool Box...............................................................................................................................................75
Bean Saver ..........................................................................................................................................75
Rock Retarder......................................................................................................................................75
Hydraulic Fore-Aft Reel Positioner (973 Headers Only) ......................................................................76
Raised Sickle Conversion Kits .............................................................................................................76
Windrower Header Conversion Kits (973 Headers Only).....................................................................76
Narrow End Deflectors.........................................................................................................................76
UNLOADING AND ASSEMBLY
Unloading.......................................................................................................................................77, 78
Pull Header Over to Field Position.......................................................................................................79
Set Header Support Stand...................................................................................................................79
Reel Support Arms.........................................................................................................................80, 81
Reel Assembly .....................................................................................................................................82
Draper Installation..........................................................................................................................83, 84
Attach Header ......................................................................................................................................85
Bleeding Hydraulics .............................................................................................................................85
Adjustments and Checks .....................................................................................................................86
974 Flex Header: Wing Float Set-up and Pre-delivery Check ..................................................... 87 - 90
INDEX .................................................................................................................................................91, 92
Form # 147083
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Issue 01/07
SERIAL NUMBER LOCATION
Record the serial number in the space provided.
Plate (A) is located on gusset at left hand end
sheet, near main tube.
NOTE: When ordering parts and service, be sure to give your dealer the complete and proper serial number.
A
HEADER SERIAL PLATE
Form # 147083
5
Issue 01/07
SAFETY
SAFETY ALERT SYMBOL
This safety alert symbol indicates important safety messages in this manual and
on safety signs on the header.
This symbol means:
ATTENTION !
BECOME ALERT !
YOUR SAFETY IS INVOLVED !
Carefully read and follow the safety message accompanying this symbol.
Why is SAFETY important to you?
· ACCIDENTS DISABLE AND KILL
3 BIG REASONS · ACCIDENTS COST
· ACCIDENTS CAN BE AVOIDED
SIGNAL WORDS
Note the use of the signal words DANGER, WARNING, and CAUTION with safety messages. The appropriate
signal word for each message has been selected using the following guidelines:
SAFETY SIGNS
• The safety signs reproduced on the next page appear on the header at the locations listed.
• Keep safety signs clear and legible at all times.
• Replace safety signs that are missing or become illegible.
• If original parts on which a safety sign was installed are replaced, be sure the repair part also bears the
current safety sign.
• Safety signs are available from your Dealer Parts Department.
To install safety signs:
1. Be sure the installation area is clean and dry.
2. Decide on the exact position before you remove the backing paper.
3. Remove the smaller portion of the split backing paper.
4. Place the sign in position and slowly peel back the remaining paper, smoothing the sign as it is applied.
5. Small air pockets can be smoothed out or pricked with a pin
DANGER – Indicates an imminently hazardous situation that, if not avoided, will result in death or
serious injury.
WARNING – Indicates a potentially hazardous situation that, if not avoided, could result in death
or serious injury. It is also used to alert against unsafe practices.
CAUTION – Indicates a potentially hazardous situation that, if not avoided, may result in minor or
moderate injury. It is also used as a reminder of good safety practices.
Form # 147083
6
Issue 01/07
SAFETY
SAFETY SIGNS
DRIVELINE
Order # 158977
BACK TUBE
Order # 32009.
BACK TUBE
Order # 42122.
BACK TUBE
Order # 44611.
ROTATING DRIVELINE
Contact can cause
death. Keep away. Do
not operate without:
• All driveline, power
unit, and attachment
shields in place.
• Driveline securely
attached at both
ends.
• Driveline shields that
turn freely on
driveline.
Order # 158289
Form # 147083
R/H WHEEL
(TRANSPORT OPTION)
Order # 129260.
UPPER CROSS AUGER (OPTION)
Order # 158621
7
HITCH
(TRANSPORT OPTION)
Order # 129261.
Issue 01/07
SAFETY
GENERAL SAFETY
The following are general farm safety
precautions that should be part of
your operating procedure for all
types of machinery.
1. Protect yourself.
When assembling, operating and servicing
machinery wear all the protective clothing
and personal safety devices that COULD be
necessary for the job at hand. Don't take
chances.
You may need:
• a hard hat.
• protective shoes with slip resistant soles.
• protective glasses or goggles.
• heavy gloves.
• wet weather gear.
• respirator or filter mask.
• hearing protection. Be aware that prolonged
exposure to loud noise can cause
impairment or loss of hearing. Wearing a
suitable hearing protective device such as
earmuffs (A) or earplugs (B) protects
against objectionable or loud noises.
2. Provide a first-aid kit for use in case of
emergencies.
3. Keep a fire extinguisher on the machine. Be
sure the extinguisher is properly maintained
and be familiar with its proper use.
4. Keep young children away from machinery
at all times.
5. Be aware that accidents often happen when
the operator is tired or in a hurry to get
finished. Take the time to consider the
safest way. Never ignore warning signs of
fatigue.
PROTECT YOURSELF
PROTECT AGAINST NOISE
BE PREPARED FOR EMERGENCIES
Form # 147083
8
Issue 01/07
SAFETY
GENERAL SAFETY
6. Wear close-fitting clothing and cover long
hair. Never wear dangling items such as
scarves or bracelets.
7. Keep hands, feet, clothing and hair away
from moving parts. Never attempt to clear
obstructions or objects from a machine
while the engine is running.
8. Keep all shields in place. Never alter or
remove safety equipment. Make sure
driveline guards can rotate independently of
the shaft and can telescope freely.
9. Use only service and repair parts made or
approved by the equipment manufacturer.
Substituted parts may not meet strength,
design, or safety requirements.
10. Do not modify the machine. Unauthorised
modifications may impair the function
and/or safety and affect machine life.
11. Stop engine and remove key from ignition
before leaving operator's seat for any
reason. A child or even a pet could engage
an idling machine.
12. Keep the area used for servicing machinery
clean and dry. Wet or oily floors are
slippery. Wet spots can be dangerous when
working with electrical equipment. Be sure
all electrical outlets and tools are properly
grounded.
13. Use adequate light for the job at hand.
14. Keep machinery clean. Straw and chaff on a
hot engine are a fire hazard. Do not allow oil
or grease to accumulate on service
platforms, ladders or controls. Clean
machines before storage.
15. Never use gasoline, naphtha or any volatile
material for cleaning purposes. These
materials may be toxic and/or flammable.
16. When storing machinery, cover sharp or
extending components to prevent injury
from accidental contact.
(continued)
KEEP AWAY FROM MOVING PARTS
KEEP SERVICE AREA CLEAN AND DRY
NEVER WEAR LOOSE
OR DANGLING CLOTHES
Form # 147083
9
Issue 01/07
SPECIFICATIONS
973/974 Header
HEADER WIDTH Nominal cut width plus 10.5” (267 mm)
SICKLE DRIVE "C" belt to enclosed oil bath wobble box – 3” (76 mm) stroke
SICKLE SPEED 1240 to 1345 spm - varies depending on combine
SICKLE TYPE Over-serrated, bolted sections (973 - 14 serrations per inch)
(974 – 9 serrations per inch)
GUARD TYPE Double heat-treated
Stub or Pointed for 21’ & 25’, Pointed for 30’, 36’ & 39’
GUARD ANGLE: 3.5° to 9.1° (cutterbar on ground)
DRAPER TYPE Self-tracking rubber coated polyester with rubber slats
DRAPER WIDTH 41.5" (1054 mm)
DRAPER ANGLE 14° to 19.6° (cutterbar on ground)
DRAPER DRIVE Hydraulic
DRAPER SPEED 170 to 580 ft. per minute (50 to 175 m/min)
DELIVERY OPENING HEIGHT 32.3" to 36.2" (820 to 920 mm) at 8" (200 mm) cutting height
DELIVERY OPENING WIDTH Distance between draper rollers:
21, 25, 30, 36 & 39 ft.: 7” deflectors 35.2" to 45.4" (895 mm to 1153 mm)
by shortening drapers: 54.1" to 64.5" (1375 mm to 1640 mm)
REEL TYPE MacDon 2100 cam action pick-up reel
FINGER TIP RADIUS 31.5" (800 mm)
NUMBER OF BATS 6 Bat for 21’ & 25’, 5 Bat for 30’, 36’ & 39’
REEL FINGER MATERIAL Steel for 21’ & 25’ (Plastic Option)
Plastic for 30’, 36’ & 39’
REEL DRIVE Hydraulic
REEL SPEED 20 to 60 RPM – varies depending on combine, adjustable from cab
REEL LIFT Hydraulic
WEIGHTS: Weights shown are base header plus standard reel (see above). (See below for weights for
common options.)
21’ Model 973 2955 lbs. (1340 kg)
25’ Model 973 3355 lbs. (1522 kg)
30’ Model 973 3845 lbs. (1744 kg)
36’ Model 973 4325 lbs. (1962 kg)
39’ Model 973 4611 lbs. (2096 kg)
30’ Model 974 4077 lbs. (1849 kg)
36’ Model 974 4470 lbs. (2028 kg)
Outer Adjustable Skid Shoes – add 40 lbs. (18 kg)
Inner Adjustable Skid Shoes – add 38 lbs. (17 kg)
Gauge Wheels – add 200 lbs. (91 kg)
Upper Cross Auger
DRIVE Hydraulic
SPEED 140 to 390 rpm (varies with drapers)
TYPE 9" (229 mm) diameter, center feed
WEIGHT 136 lbs. (62 kg)
Form # 147083
10
Issue 01/07
TORQUE SPECIFICATIONS
[
[
[.4]
[
[
[
[4]
[7]
[7]
[11]
[18]
[26]
[37]
[52]
[66]
[92]
[
[
[
[
[
[
[
[
[
]
[
]
CHECKING BOLT TORQUE
The tables shown below give correct torque values for various bolts and capscrews. Tighten all bolts to the
torques specified in chart unless otherwise noted throughout this manual. Check tightness of bolts periodically,
using bolt torque chart as a guide. Replace hardware with the same strength bolt.
ENGLISH TORQUE SPECIFICATION
NC Bolt Torque*
Bolt
Dia.
"A"
SAE 5 SAE 8
N·m [lb-ft] N·m [lb-ft]
1/4" 12 [9] 15 [11]
5/16" 24 [18] 34 [25]
3/8" 43 [32] 56 [41]
7/16" 68 [50] 95 [70]
1/2" 102 [75] 142 [105]
9/16" 149 [110] 202 [149]
5/8" 203 [150] 271 [200]
3/4"
359 [265]
495 [365]
7/8" 569 [420] 813 [600]
1" 867 [640] 1205 [890]
METRIC TORQUE SPECIFICATIONS
Bolt
Dia.
"A"
M3 0.5
M4
M5
M6
M8
M10 50
M12 90
M14 140
M16 225
M20 435
M24 750
M30 1495
M36 2600
N·m
10
25
8.8
3
6
Bolt Torque*
lb-ft] N·m
1.8
2.2] 4.5
103] 200
166] 310
321] 610
553] 1050
1103
[1917]
9
15
35
70
125
2100
3675
10.9
Torque figures indicated above are valid for non-greased or non-oiled threads and heads unless otherwise
specified. Do not grease or oil bolts or capscrews unless specified in this manual. When using locking
elements, increase torque values by 5%.
* Torque value for bolts and capscrews are identified by their head markings.
lb-ft]
1.3]
3.3]
148]
229]
450]
774]
1550
[2710]
Form # 147083
11
Issue 01/07
TORQUE SPECIFICATIONS
TIGHTENING O-RING FITTINGS*
1. Inspect O-ring and seat for dirt or obvious
defects.
2. On angle fittings, back the lock nut off until
washer bottoms out at top of groove.
3. Hand tighten fitting until back-up washer or
washer face (if straight fitting) bottoms on face
and O-ring is seated.
4. Position angle fittings by unscrewing no more
than one turn.
5. Tighten straight fittings to torque shown.
6. Tighten angle fittings to torque shown while
holding body of fitting with a wrench.
* The torque values shown are based on
lubricated connections as in reassembly.
Thread
7/16 9/16 12 [9] 2
9/16 11/16 24 [18] 2
1-1/16 1-1/4 102 [75] 1
1-3/16 1-3/8 122 [90] 1
1-5/16 1-1/2 142 [105] 3/4 1/8
1-5/8 1-7/8 190 [140] 3/4 1/8
Size
(in.)
Nut Size
Across
Flats
(in.)
Torque Value*
Recommended
Turns to Tighten
(after finger
tightening)
N·m [lb-ft] Flats Turns
3/8 1/2 8 [6] 2
1/3
1/3
1/2 5/8 16 [12] 2
1/3
1/3
3/4 7/8 46 [34] 2
1/3
7/8 1 62 [46] 1-1/2 1/4
1/6
1/6
TIGHTENING FLARE TYPE TUBE FITTINGS*
1. Check flare and flare seat for defects that
might cause leakage.
2. Align tube with fitting before tightening.
3. Lubricate connection and hand tighten swivel
nut until snug.
4. To prevent twisting the tube(s), use two
wrenches. Place one wrench on the connector
body and with the second, tighten the swivel
nut to the torque shown.
* The torque values shown are based on
lubricated connections as in reassembly.
1-7/8 2-1/8 217 [160] 1/2 1/12
Tube
Size
O.D.
(in.)
Nut Size
Across
Flats
(in.)
Torque Value*
Recommended
Turns to Tighten
(after finger
tightening)
N·m [lb-ft] Flats Turns
3/16 7/16 8 [6] 1
1/6
1/4 9/16 12 [9] 1
1/6
5/16 5/8 16 [12] 1
1/6
3/8 11/16 24 [18] 1
1/6
1/2 7/8 46 [34] 1
1/6
5/8 1 62 [46] 1
1/6
3/4 1-1/4 102 [75] 3/4 1/8
7/8 1-3/8 122 [90] 3/4 1/8
Form # 147083
12
Issue 01/07
OPERATION
YOUR RESPONSIBILITIES AS AN OWNER/OPERATOR
CAUTION:
1. It is your responsibility to read and
understand this manual plus the Adapter
and Combine Operator's Manual
completely before operating the header.
Contact your dealer if an instruction is not
clear to you.
2. Follow all safety messages in the manuals
and on safety signs on the machine.
3. Remember that YOU are the key to safety.
Good safety practices protect you and the
people around you.
4. Before allowing anyone to operate the
machine, for however short a time or
distance, make sure they have been
instructed in its safe and proper use.
5. Review the manual and all safety related
items with all operators annually.
6. Be alert for other operators not using
recommended procedures or not following
safety precautions. Correct these mistakes
immediately, before an accident occurs.
7. Do not modify the machine. Unauthorized
modifications may impair the function
and/or safety and affect machine life.
8. The safety information given in this manual
does not replace safety codes, insurance
needs, or laws governing your area. Be
sure your machine meets the standards set
by these regulations.
TO THE NEW OPERATOR
It's natural for an operator to be anxious to get
started with a new machine. Please take the time
to familiarize yourself with the header by reading
the Operator's Manuals and safety signs before
attempting operation.
Form # 147083
13
Issue 01/07
OPERATION
BREAK-IN PERIOD
1. After attaching header to combine or wind-
rower tractor for the first time, operate the
machine with reel drapers and sickle running
slowly for 5 minutes, watching and listening
FROM THE OPERATOR'S SEAT for binding or
interfering parts.
CAUTION: Before investigating an
unusual sound or attempting to
correct a problem, shut off engine,
engage parking brake and remove
key.
NOTE: Reel and side drapers will not operate until
oil flow fills the lines.
2. Change hydraulic oil filter as recommended in
combine adapter Operator's Manual.
3. Adjust the tension of sickle drive belt (A) after a
5 hour run-in period. (See Maintenance/
Service section.) Continue to check the belt
tension periodically for the first 50 hours.
4. Tighten any loose hardware after the first
5 hours operation. See Specifications section
for recommended torques.
5. Tighten the four wobble box mounting bolts (B)
after the first 10 hours operation and every 100
hours thereafter. Torque to 200 ft.lbs. (270
N·m), starting with the side mounting bolts.
6. Change wobble box lubricant after the first
50 hours operation and every 1000 hours (or 3
years) thereafter. See Maintenance/Service
section.
A
CHECK SICKLE DRIVE BELT TENSION
B
B
TIGHTEN FOUR WOBBLE BOX
MOUNTING BOLTS
Form # 147083
14
Issue 01/07
OPERATION
PRE-STARTING CHECKS: ANNUAL
Do the following at the start of each operating
season.
CAUTION:
1. Review the Operator's Manuals to refresh
your memory on safety and operating
recommendations.
2. Review all safety signs and other decals on
the machine and note hazard areas.
3. Be sure all shields and guards are properly
installed and secured. Never alter or
remove safety equipment.
4. Be sure you understand and have
practiced safe use of all controls. Know the
capacity and operating characteristics of
the machine.
5. Check the first aid kit and fire extinguisher.
Know where they are and how to use them.
Also:
6. Install drapers. See "Drapers" in Maintenance
/Service section.
7. Adjust belt, draper and chain tension. See
Maintenance/Service section.
8. Perform all Annual Maintenance. See Maintenance/Service section.
PRE-STARTING CHECKS: DAILY
Do the following each day before start-up:
1. Clear the area of other persons, pets etc.
Keep children away from machinery. Walk
around the header to be sure no one is
under, on or close to it.
2. Remove foreign objects from the machine
and surrounding area.
3. Wear close fitting clothing and protective
shoes with slip resistant soles.
As well, carry with you any protective
clothing and personal safety devices that
COULD be necessary through the day. Don't
take chances.
You may need:
- hard hat
- protective glasses
- heavy gloves
- respirator or filter mask
- wet weather gear.
4. Protect against noise.
Wear a suitable hearing
protective device such as
earmuffs or earplugs to
protect against objectionable or
uncomfortably loud noises.
5. Check the machine for leaks or any parts
that are missing, broken, or not working
correctly.
NOTE: Use proper procedure when
searching for pressurized fluid leaks. See
"Hydraulic System" in Maintenance/Service
section.
6. Clean all lights and reflective surfaces on
the machine.
7. Perform all Daily maintenance. See Maintenance/Service section.
CAUTION:
Form # 147083
15
Issue 01/07
OPERATE CORRECTLY
CAUTION:
1. Follow all safety and operational
instructions given in your Operator's
Manuals. If you do not have a combine
manual, get one from your dealer and read
it thoroughly.
2. Never attempt to start the engine or
operate the machine except from the
operator's seat.
3. Check the operation of all controls in a safe
clear area before starting work.
4. Do not allow riders on combine.
5. Never start or move the machine until you
are sure all bystanders have cleared the
area.
6. Avoid travelling over loose fill, rocks,
ditches or holes.
7. Drive slowly through gates and doorways.
8. When working on inclines, travel uphill or
downhill when possible. Be sure to keep
transmission in gear when travelling
downhill.
9. Never attempt to get on or off a moving
machine.
10. Do not leave the operator's station while
the engine is running.
11. Stop engine and remove key before
adjusting or removing plugged material
from the machine. A child or even a pet
could engage the drive.
12. Check for excessive vibration and unusual
noises. If there is any indication of trouble,
shut-down and inspect the machine.
Follow proper shutdown procedure:
- engage brake
- disengage header drive
- turn off engine and remove key
- wait for all movement to stop
- dismount and engage cylinder stops
before inspecting raised machine.
13. Operate only in daylight or good artificial
light.
OPERATION
CLEAR THE AREA BEFORE OPERATING
DO NOT ALLOW RIDERS
Form # 147083
16
Issue 01/07
OPERATION
HEADER CONTROLS
CAUTION: Be sure all bystanders are
clear of machine before starting
engine or engaging any header
drives.
See your Combine Operator's Manual for
identification of in-cab controls for:
• Header Drive Clutch
• Header Height
• Ground Speed
• Reel Speed
• Reel Height
• Reel Fore Aft / Header Tilt
HEADER LIFT CYLINDER STOPS
DANGER: To avoid bodily injury or
death from fall of raised header,
always engage cylinder stops before
going under header for any reason.
See your Combine Operator's
Manual for instruction regarding the
use and storage of header lift
cylinder stops.
REEL PROPS
IMPORTANT: To prevent damage to reel support
arms, do not transport header with reel props
engaged.
Reel props are located at each reel support arm.
To engage reel props:
1. Raise reel to maximum height.
2. Move props (A) to engaged position.
3. Lower reel until props contact end frames.
NOTE: Keep pivot bolt (B) properly tightened so
prop remains in stored position when not in use,
yet can be engaged with hand force.
WARNING: To avoid bodily injury
from fall of raised reel, always
engage reel props before going
under raised reel for any reason.
B
A
REEL PROP - ENGAGED
Form # 147083
17
Issue 01/07
OPERATION
OPERATING VARIABLES
Satisfactory function of the header (and hay
conditioner) in all situations requires making
proper adjustments to suit various crops and
conditions.
Correct operation reduces crop loss and allows
cutting of more acres. As well, proper adjustments
and timely maintenance will increase the length of
service you receive from the machine.
The variables listed here and detailed on the
following pages will affect the performance of the
header and conditioner. You will quickly become
adept at adjusting the machine to give you the
desired results.
CUTTING HEIGHT
Desired cutting height will vary depending on type of crop and other factors.
Gauge Wheels / Transport Option
For headers with gauge wheels or transport option choose appropriate pin position for stubble height.
HEADER
1. Cutting Height
2. Divider Rod Length
3. Ground Speed
4. Header Flotation
5. Header Angle
6. Draper Speed
7. Delivery Opening Width
8. Reel Speed
9. Reel Height
10. Reel Fore-Aft Position
11. Reel Pick-Up Finger Pitch
12. Upper Cross Auger (Optional)
OPERATING VARIABLES
Form # 147083
18
Issue 01/07
OPERATION
CUTTING HEIGHT (continued)
Skid Shoes
In crops and conditions where it is desirable to cut
close to the ground, use skid shoes to vary cutting
height. The operator can then lower the header to
the ground, allowing the shoes to provide a
consistent cutting height.
NOTE: Lowering the skid shoes raises the cutting
height. This may be desirable in stony conditions,
to reduce damage to cutting components. Other
benefits include reduced plugging due to mud or
dirt build-up and longer stubble for faster drying.
Outer skid shoes have four settings to provide a
coarse adjustment for cutting height. Height can
then be fine-tuned with header angle adjustment.
Tip: With header angle in the steeper part of the
range (center link more extended), lower skid
shoes until cutterbar and shoes contact the ground
at the same time when lowering header. Then
when operating, flattening the header angle
(retracting center link) will raise the cutterbar
(guards) while the skid shoes stay on the ground.
This may be useful to clear trash build-up on
cutterbar, or in rocky conditions. See "Header
Angle" in this section.
To change end skid shoe position:
1. Loosen front bolt, securing skid shoes at (A).
2. Remove hardware at shoe (B), both ends of
header.
3. Position shoe at the desired setting, and install
hardware (B).
4. Retighten front bolt.
NOTE: When end skid shoes are not required,
shoes and bolt-on brackets (C) may be removed.
To change inner skid shoe position:
1. Remove hardware at (D) both sides of header
leg.
2. Position shoe at desired height and install
hardware (D).
3. Tighten hardware (D).
NOTE: Adjust all shoes to the same height to
provide an even cutting height.
DANGER: To avoid bodily injury or
death from unexpected start-up or
fall of raised header; stop engine,
remove key and engage header lift
cylinder stops before going under
header to adjust skid shoes (or for
any reason).
A
C
B
END SKID SHOES
D
INNER SKID SHOES
Form # 147083
19
Issue 01/07
OPERATION
DIVIDER ROD LENGTH
Divider rods are removable and two lengths are
provided as standard equipment. The longer rods (A)
are suitable when crop requires running down, while
the shorter pointed rods (B) are better in standing
crops. See the chart below for recommended rod
length for various crops.
LONG DIVIDER RODS
(A)
Lodged Cereal
Peas
Lentils
Canola
Flax
Alfalfa
SHORT DIVIDER
RODS (B)
Standing Cereal
Edible Beans
Soybeans
Rice
Milo
A
LONG DIVIDER RODS
NOTE: A floating divider kit is available to extend the
separation of crop to a point in front of the reel. This can
be beneficial in short (up to 75 cm [30 in.]) lodged or
standing crop. The floating dividers are also effective in
tall standing crop. This attachment is not recommended
for tall lodged crops. See Options and Attachments
section.
B
SHORT RODS IN STORAGE POSITION
Form # 147083
20
Issue 01/07
OPERATION
GROUND SPEED
• Ground speed should be such that the sickle can cut crop smoothly and cleanly, while giving the desired
delivery of material to the opening. Excessive ground speed results in "ragged" cutting.
• In tough-to-cut crops like flax, reduce ground speed to reduce loads on cutting components and drives.
• Higher ground speeds require heavier float settings to prevent excessive bouncing. This will result in
increased cutting component damage.
• As ground speed is increased, draper and reel speed should be increased to handle the extra material.
The chart below indicates the relationship between ground speed and area cut for the four header sizes.
Example shown
would be approximately 15-½ acres (6 hectares).
: At a ground speed of 6 miles per hour (10 km/h) with a 21 ft. header, the area cut in one hour
Form # 147083
21
Issue 01/07
OPERATION
HEADER FLOTATION
IMPORTANT: To avoid frequent breakage of sickle components, scooping soil, or soil build-up at cutterbar in
wet conditions, header float should be set as light as possible without causing excessive bouncing.
Under normal conditions, when cutting above the ground, adjust float spring tension so 50 - 70 lbs. force (225 315 N) is required to lift divider at either end. Cutting on the ground requires lighter float, approximately 30 lbs.
(135 N) at each divider point.
Setting float on headers with gauge wheels
Headers with gauge wheels use the springs in the
gauge wheel package to assist in header floatation.
As such, the float adjustment for these headers must
be set to take advantage of the extra flotation.
Proceed as follows:
1. Set gauge wheels to medium stubble height
position (E).
2. Set center link to approximately 21-1/2 in. (545
mm) pin to pin.
3. Adjust adapter float spring drawbolts such that
gauge wheel arm (F) contacts pin (E) when the
header is lowered. If header floats away from the
pin, reduce float. If arm (F) contacts pin but float
is heavy, increase float.
For 973 Headers, see "Header Flotation" in Combine
Adapter Operator's Manual for adjustment details.
FLOTATION ADJUSTMENT – 974 FLEX HEADERS
Initial setting of the wing float and adapter spring float is done at machine Set-Up. See “Assembly” section at
back of this book. The following covers field adjustments that may be required from time to time.
Cutting on the Ground
For cutting on the ground, best operation will occur with minimum extra weight on the header. Consider
removing gauge wheels or transport attachment, if equipped. If weight is added or removed from the
header, both wing float and adapter spring float may require readjustment.
Operating tips:
1. Set top link between adapter and header to mid-
range position (19-1/4”) (490 mm).
2. Ensure adapter float lockout is disengaged.
Adjust adapter float springs as described in
Combine Adapter Operator’s Manual so that gap
at (A) between float arm and down stop is 1/2” (13
mm) when cutterbar is 6” (150 mm) above
ground. Notch (B) is provided as an alignment
mark for this setting. This will result in about 2”
(50 mm) gap under normal “ground hugging”
conditions and float optimizer function. Header
can flex to “full frown” only when gap at (A) is
around 2”.
GROUND RESULTS IN 2” (50 mm) GAP WHEN
USE GAUGE WHEEL SPRINGS
TO ASSIST FLOTATION
B
A
1/2” (13 mm) GAP WITH HEADER 6” OFF
CUTTING ON GROUND FOR FULL FLEX
CAPABILITY
Form # 147083
22
Issue 01/07
OPERATION
HEADER FLOTATION ADJUSTMENT – 974 FLEX
HEADERS
Cutting on the Ground
3. Disengage wing float lock pins (Position (B), two
per side) to allow wings to float.
4. Adjust float optimizer while watching float indicator
to set desired cutterbar down force (flotation).
5. Adjust header angle to achieve desired stubble
height. NOTE: Use steps 4 and 5 to fine tune the
header to achieve the shortest stubble height
without pushing dirt
6. In rocky fields, adjust skid shoes down. This raises
guards when operating at the flattest header angle
to minimize scooping rocks.
7. If cutterbar begins to push dirt during operation,
adjust header height (with optimizer or feeder
house height control) to minimize pushing.
8. Header angle and reel fore-aft position can be
changed without significantly effecting header
flotation.
Adjust Wing Downforce To Correct Uneven Float:
1. If stubble at dividers is longer than at center, or if
cutterbar pushes dirt in the center section of the
header, adjust to transfer weight from the center
section to the wings as follows:
• Loosen bell crank clamp bolt (C), located inside bell
crank housing.
• Loosen nut (D) and turn nut (E) to raise bell crank
bolt (F).
• Tighten clamp bolt (C).
• NOTE: Make small adjustments in position of tee
bolt (one or two turns) followed by field test. If the tee
bolt is adjusted more than 10 turns in total, perform
the entire “Wing Float Set-Up” procedure detailed on
page 87.
2. If stubble at center of header is longer than at dividers,
or if cutterbar pushes dirt near the ends of the header,
proceed as in Step 1, but lower the tee bolt to transfer
weight from the wings to the center section.
3. When properly adjusted, the wing float indicators (G)
will be moving continuously, indicating header wings
are flexing between “smile” and “frown”. If not, readjust as required per steps 1 & 2.
NOTE: Functions of inner and outer wing
float lock pins – Each wing of the Flex Header
has an inner and outer float lock-out pin as
shown in top photo above. These pins can be
engaged (as at (A) above) or disengaged (as at
(B) above) with the following results:
• Both pins engaged – Wing float is fully
locked out.
• Inner pin engaged, Outer pin disengaged –
Wing can smile, not frown.
• Outer pin engaged, Inner pin disengaged –
Wing can frown, not smile
• Both pins disengaged – Wing is free to flex
to smile and frown positions.
(Operating Tips continued)
G
B
A
WING FLOAT LOCKOUT:
(A) – ENGAGED / (B) – DISENGAGED
F
C
E
D
F
E
D
ADJUST BELL CRANK BOLT –
UP FOR HEAVIER WING / DOWN FOR
LIGHTER WING
C
Form # 147083
23
Issue 01/07
OPERATION
HEADER FLOTATION ADJUSTMENT – 974 FLEX HEADERS
Cutting above the Ground
When cutting above ground, for example in cereal grains, note the following:
1. The header can be operated with the wing float lock pins engaged or disengaged.
• Engaging the wing float lock pins will keep cutterbar straight at all times.
• Operating with wing float lock disengaged will reduce the force on guards in rocky conditions, and
allows the wings to flex when the header contacts the ground.
2. Gauge wheels can be used to stabilize the header.
Form # 147083
24
Issue 01/07
OPERATION
HEADER ANGLE
The header angle can be varied within these ranges:
Measured at Guards: 3.5° to 9.1° (cutterbar on ground).
Measured at Drapers: 14° to 19.6° (cutterbar on ground).
Achievable angles may vary depending on combine face plate angle.
IMPORTANT: The flattest header angles are recommended for normal conditions. A flatter header angle
reduces sickle section breakage and reduces soil scooping or build-up at the cutterbar in wet conditions. Use a
steeper angle to cut very close to the ground, or in down crop for better lifting action.
Header angle is varied by adjusting the length of the top link (mechanical or hydraulic) between adapter and
header. See "Header Angle" in Combine Adapter Operator's Manual for adjustment details.
DRAPER SPEED
Draper speed affects the orientation of stalks in the delivered crop. See Combine Adapter Operator's Manual
for adjustment details.
Form # 147083
25
Issue 01/07
OPERATION
DELIVERY OPENING WIDTH
A C D E F B
D
RELEASE DRAPER TENSION
CENTER DELIVERY
OPENING WIDTH
(between rollers)
With decks
shifted out
(W)
63.7”
(1620 mm)
49.8”
(1265 mm)
49.8”
(1265 mm)
45.9”
(1165 mm)
45.9”
(1165 mm)
With decks
shifted in (Y)
53.5”
(1360 mm)
45.9”
(1165 mm)
39.6”
(1005 mm)
42”
(1065 mm)
35.6”
(905 mm)
LEG TO
IDLER ROLLER
EDGE (DIM. X)
(decks in)
11”
(280 mm)
16.8”
(427 mm)
20”
(507 mm)
18.8”
(477 mm)
20”
(508 mm)
ENDPANEL DEFLECTORS
(Shown on next page)
Standard (G)
Narrow (H)
Standard (G)
Narrow (H)
Standard (G)
Adjust delivery opening width:
Decks can be slid inwards to adjust opening size without cutting or extending the drapers
All headers are supplied with a long draper which may be cut to provide a wider opening. By cutting both
drapers, opening can be increased by 19” (480 mm). If reducing the opening size after it has been enlarged, a
short section of draper (available from your dealer) can be added to increase draper length.
NOTE: To avoid damage to draper and/or draper tension
mechanism, do not use drapers that are different in
length from those specified.
For adjusting opening size without cutting drapers,
go to step 8:
To cut or extend draper:
1. Release draper tension by turning bolt (D) counterclockwise until bolt begins to turn out of backsheet.
2. Remove screws from draper connector slat.
3. Use the following chart to determine which opening
size and row of holes are required for the desired
application.
NOTE: Recommended starting point is with decks shifted in, column (Y) for rows I and III.
For row II start at 45.4” (1155 mm) for specialty crops and 42.1” (1070 mm) or less for cereal crops.
HEADER AND
COMBINE MODELS
John Deere, New
I
Holland CX, Lexion
(Wide Decks)
Case 77, 80 & 88
Case AFX, New
II
Holland CR
970/980, Lexion
(Mid Size Decks)
Case 60 & 66,
III
Agco, New Holland
CR 920/940/960
CONNECTION
(both drapers)
Row D to Row F
Row B to Row E
Row B to Row E
Row A to Row F
Row A to Row F
Form # 147083
26
Issue 01/07
OPERATION
To adjust delivery opening width: (continued)
G
STANDARD DEFLECTOR
4. Verify that the idler roller assembly is
bolted into the deck in the correct
position for the selected opening
size. See "Idler Roller Positioning" in
Maintenance/ Service section.
5. If increasing delivery opening width:
Cut excessive flap off of draper,
leaving 3/8" (10 mm) extending
above the connector. Trim the new
ends at the front and rear corners as shown on
previous page. This allows draper to fit properly
under draper seals to prevent tearing of edges.
Use the cut-offs as a guide for trimming. Keep the
cut-offs for use as a splice.
6. NOTE: Place connector tube so holes closest to
end of tube are at cutterbar. Connect draper with
screw heads facing center opening.
7. Apply draper tension as follows:
• Check that draper V-guide is properly engaged in
grooves at rear of both rollers.
• Tighten bolt (D) until white indicator bar is partially
hidden behind the roller support arm at (F).
IMPORTANT: To avoid premature failure of
draper, draper rolls and/or tightener components,
do not operate with tension set so that white bar
is fully hidden.
8. Slide decks to desired opening width:
• Loosen clamp (E) at top of deck. (For 36’ & 39’
Headers, there are two clamps.)
• Slide deck to achieve desired header opening
(see chart on previous page). The recommended
starting position is with decks shifted in.
• Tighten nut at clamp (E).
H
NARROW DEFLECTOR
X
DELIVERY
OPENING
Y
W
D
F
APPLY DRAPER TENSION
E
Form # 147083
LOOSEN CLAMP TO POSITION DECK
27
Issue 01/07
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