In buying a Kuhn machine you have chosen wisely. Into it have gone years of thought, research and
improvement. You will find, as have thousands of owners all over the world, that you have the best that
engineering skill and actual field testing can produce. You have purchased a dependable machine, but only
through proper care and operation can you expect to receive the performance and long service built into it.
This manual contains all the necessary information for you to receive full efficiency from your machine. The
performance you get from this machine is largely dependent on how well you read and understand th is manual
and apply this knowledge. Please DO NOT ASSUME YOU KNOW HOW TO OPERATE AND MAINTAIN YOUR
MACHINE before reading this manual carefully. KEEP THIS MANUAL AVAILABLE FOR REFERENCE. Pass
it on to the next owner if you re-sell the machine.
Your KUHN dealer can offer a complete line of genuine KUHN service parts. These parts ar e manufactured and
carefully inspected in the same factory that builds the machine to assure high quality and accurate fitting of any
necessary replacements.
About improvements
We are continually striving to improve our products. It therefore reserves the right to make improvements or
changes when it becomes practical to do so, without incurring any obligations to make changes or additions to
the equipment sold previously.
Designated use of the machine
The GF222T gyrotedder must only be used for the purpose for which it was manufactured: spreading and
tedding previously cut forage or straw.
Please write below the type and serial number of the
machine. This information is to be indicated to the dealer
for all spare parts orders.
Gyrotedder
GF222T
Type: GF222T
Serial no.:
Identification of the machine
5
Page 8
$Safety
1.Description of symbols used in this
document
This symbol indicates a potentially hazardous situation
that if not avoided, could result in serious bodily injury.
Gyrotedder
GF222T
This symbol is used to identify special instructions or
procedures which, if not followed strictly, could result in
machinery damage.
This symbol is used to communicate technical
information of particular interest.
6
Safety
Page 9
Gyrotedder
GF222T
2.Safety instructions
Introduction
The machine must only be operated, maintained and repaired by competent persons who are familiar with
machines' specifications and operation and aware of safety regulations fo r preventing accidents.
The operator must imperatively respect safety instructions in this manual and in the warnings posted on the
machine. The operator is also obliged to respect current le gislation concerning accident prevention, wo rk safety
and public traffic circulation.
Designated use of the machine also means following operation, maintenance and repair recommendations
given by the manufacturer, and using only genuine spare parts, equipment a nd acce sso ries, as r ecom mended
by the manufacturer.
The manufacturer is not held liable for any damage resulting from machine applications other than those
specified by the manufacturer. Any use other than the designated operation is at the risk and responsibility of
the operator.
The manufacturer is not held liable for any damage or accident re sulting from machine modifications carried out
by the operator himself or by a third party without previous written agreement from the manufacturer.
Read and follow the safety instructions
Before using the machine, carefully read all the safety
instructions in this manual and the warnings placed on
the machine.
Before starting work, the operator must be familiar with
all machine controls, handling devices and their
functions. It is too late to learn once work has been
started!.
Never let anyone operate the machine who is not traine d
to do so.
Should you have any difficulties in understanding certain
parts in this manual, please contact your KUHN dealer.
Precautions to be taken before carrying out
any operations on the machine
Before leaving the tractor or before adjusting,
maintaining or repairing the machine, disengage the
PTO drive, turn off the engine, remove ignition key and
wait until all moving parts have come to a complete stop
and apply park brake.
Safety
7
Page 10
Precautions to take before using the
machine
Do not wear loose clothing which could become caught
up in moving parts.
Wear the appropriate protective clothing for the work in
hand (gloves, shoes, goggles, helmet, ear-protectors,
etc.).
Ensure that all operating controls (ropes, cables, rods,
etc) are placed so as they cannot be operated
unintentionally and cause damage or injury.
Before operating the machine, check tightness of nuts
and bolts, particularly on fixing elements (tines, forks,
blades, knives, etc). Retighten if necessary.
Before operating the machine, ensure that all the safety
guards are firmly in place and in good condition.
Immediately replace any worn or damaged guard.
Gyrotedder
GF222T
Precautions when driving
Tractor handling, stability, performance and braking
efficiency are all affected by weight distribution, trailed or
mounted implements, additional ballast and driving
conditions. It is therefore of the great importance that the
operator exercises caution in every given situation.
Groundspeed must be adapted to ground conditions as
well as to roads and paths. Always avoid abrupt change s
of direction.
Be particularly cautious when turning corners, paying
attention to machine overhang, length, height and
weight.
Never use a narrow track tractor on very uneven or
steeply sloping ground.
Never leave the tractor seat while the machine is
operating.
Carrying people or animals on the machine when
working or in transport is strictly forbidden.
8
Safety
Page 11
Precautions when driving on public roads
Dimensions
Depending on the dimensions of the machine, contact
the relevant authorities to ensure that it can be legally
transported on public roads.
If the machine is over the maximum legal size, follow the
local regulations for special transportation of oversize
equipment.
Gross weight and weight per axle
Check that the tractor's authorized gross weigh t as well
as its lift capacity and maximum weight per axle are not
exceeded.
The front axle load (1) must never, under any
circumstances, be less than 20% of the tractor's unladen
weight. If necessary, add ballast weights to the front or
to the rear to preserve the steering and braking
efficiency.
Gyrotedder
GF222T
Transport position
Before transporting the machine on public roads, place
the machine into its transport position, according to the
instructions in this manual.
Lightings and signallings.
Before transporting the machine on public road s, ensure
that all legally required lightings and signallings are in
place.
Ensure that lightings and signallings are clean and in
good working order. Replace any missing or broken
equipment.
Always obey current regulations for driving
on roads
Maximum speed
Always keep to the legal speed limit for driving a tractormachine assembly on public roads.
Safety
9
Page 12
Precautions when coupling
Before attaching the machine, make sure that it cannot
accidentally start moving (chock the wheels) and that the
parking stand is in the right position.
The machine must only be attached to the hitch points
provided for this purpose.
Never stand between the tractor and the machine when
operating the three point linkage.
Do not stand between the tractor and the machine
without ensuring that the parking brake is applied.
Gyrotedder
GF222T
10
Safety
Page 13
PTO shaft
Use only PTO shafts supplied with the machine or
recommended by the manufacturer.
The protective shield of the tractor PTO stub, the PTO
shaft guards and the protective covering of the machine
input shaft must always be in place and in good
condition.
Make sure that the PTO shaft guards are se cured with
the safety chains provided.
Any worn or damaged guards must be replaced
immediately.A worn guard or an u nprotected PTO shaft
can cause a serious or even a lethal accident.
Do not wear loose clothing that could be caught in the
rotating PTO shaft.
Before attaching or removing a PTO shaft, or before
doing any work on the machine, disengage the PTO
drive, turn off the engine, remove ignition key and wait
for all moving parts have come to a complete stop.
If the primary PTO shaft is equipped with a slip clutch or
a free wheel, these must be fitted on the machine side.
Ensure that the PTO shaft is always correctly fitted and
locked into place.
Before connecting the PTO shaft, ensure that the PTO
speed (rotational frequency) and directions of rotation
are in line with manufacturer's recommendations.
Before engaging the PTO drive, make sure all people
and animals are clear from the machine. Never engage
the PTO drive when the tractor engine is stopped.
When uncoupling the machine, rest the PTO shaft on the
support specially provided, and replace protective cover
on the PTO stub of the tractor.
Read and follow the instructions in the operator's ma nual
provided with the PTO shaft.
Gyrotedder
GF222T
Safety
11
Page 14
Precautions during manoeuvres
When moving the machine from the transport positio n to
the working position and vice versa, make sure that
nobody is within the machine pivoting area.
Remote controlled components
Danger of crushing and shearing can exist when
components are operated by hydraulic or pneumatic
controls. Keep away from these danger zones.
Tyres
Regularly check the tyre pressure. Respect
manufacturers' recommendations on pressure.
Assembly, disassembly and repair of wheels and tyres
must only be carried out by competent persons who are
equipped with standardized tools. Before any work is
performed on the wheels, ensure that the machine rests
on the ground and is perfectly stable so that it cannot
move accidentally (put chocks in place).
Gyrotedder
GF222T
Safety decals
Safety warning decals to respect, are placed in pictorial
form on various parts of the machine. They are there to
warn you of potential dangers and to tell you how to
avoid accidents.
Always keep the safety decals clea n and readable, and
replace them when they are worn, damaged, missing or
illegible.
Waste disposal
Respect the environment! Never spill pollutants (oil,
grease, filters, etc.) on the ground, never pour them
down the drain and never discard them in any other
place where they could pollute the environment. Never
throw away or burn a tire. Always take waste to
specialized recycling or waste disposal centers.
12
Safety
Page 15
Precautions for maintenance and repair
work
Before leaving the tractor or before adjusting,
maintaining or repairing the machine, disengage the
PTO drive, turn off the engine, remove ignition key and
wait until all moving parts have come to a complete stop
and apply park brake.
Rest the machine on the ground, release the pressure
from the hydraulic circuit and leave the machine to cool
down.
Make sure that the parts of the machine that need to be
lifted for maintenance or repair work are firmly propped
up.
Before any work is done on the electric circuit or before
any electric welding is carried out on the attached
machine, disconnect the machine from the tractor
electrical circuit. Also disconnect alternator and battery
terminals.
Repairs on elements under pressure or tension (springs,
pressure accumulators, etc.) must only be carried out by
competent persons with regulation equipment.
Wear the appropriate protective clothing for the work in
hand (gloves, shoes, goggles, helmet, ear-protectors,
etc.).
Do not solder, weld or use a blow torch near fluids under
pressure or inflammable products.
For your own safety and for correct machine operation,
only use original manufacturer parts.
It is strongly recommended to have your machine
checked by your Kuhn dealer after each season,
especially tools and their attaching hardware (nuts,
bolts, etc.).
Gyrotedder
GF222T
Projection of stones and foreign objects
For driver safety, always use a tractor equipped with a
cab. Never start the machine when there are people
nearby.
Even when the machine is used in accordance with its
purpose, objects may be projected. Stones and other
foreign objects projected by the movin g parts can tr avel
a considerable distance. Keep all persons and animals
away from the danger zone.
Safety
13
Page 16
Precautions for machine use
Before using the machine, check tools ( tines) and their
attachment hardware in accordance with the instructions
of the present manual.
Check the guards regularly. Immediately replace any
damaged or missing elements.
Before engaging the pto drive, lower the rotors onto the
ground. Make sure all the guards are in place. Keep all
persons and animals away from the danger zone.
Keep a safe distance from the Gyrotedder when the
rotors are in movement.
Never work in reverse.
After the power source has stopped, the rotors can
continue turning for a time. Stay away from the machine
until all moving parts have come to a complete standstill.
If an obstacle is hit, disengage the PTO drive, stop the
tractor engine, remove the ignition key and wait for all
moving parts to come to a complete standstill. Check the
entire machine for any damage before resuming work.
Gyrotedder
GF222T
14
Safety
Page 17
3.Location and description of safety
decals on the machine
Location of safety decals
Gyrotedder
GF222T
Safety
15
Page 18
Description of safety decals
Operating instructions (1)
The operators' manual contains all the information
necessary for using the machine safely. It is imperative
to read and comply with all instructions.
Working on the machine (2)
Before leaving the tractor or before adjusting,
maintaining or repairing the machine, disengage the
PTO drive, turn off the engine, remove ignition key and
wait until all moving parts have come to a complete stop
and apply park brake.
Gyrotedder
GF222T
Projections (3)
Stones and other debris pro jected by the moving parts
can travel a long distance. Always stay at a safe distance
from the machine.
Rotary tools (4)
To prevent entanglement keep a safe distance from the
machine.
16
Safety
Page 19
4.Road safety equipment and
recommendations
The road safety equipment is mounted in the factory or
by your authorized Kuhn dealer according to current
safety regulations. Always keep to the legal speed limit
for driving a tractor-machine assembly on public roads .
Whatever this speed, we recommend, for everyone's
safety, not to exceed a speed of 40 km/h (25 mph).
Attachment typeDrawbar attached to the tractor pull bar
Number of rotors2
Number of tine arms per rotor6
Working width (DIN11220)2.60 m (8’6’’)
Width in working positionx.xx m (y’)
Length in working position2.46 m (8’)
Height in working position1.4 m (4’7’’)
Width in transport position2.60 m (8’6’’)
Length in transport position2.50 m (8’)
GF222T
Height in transport positionx.xx m (y’)
Minimum PTO power requirement15 kW (20 hp)
PTO speed540 min
Weight225 kg (496 lb)
Tyres15x6.00 - 6
Tyre pressure2 bar (29 psi)
-1
3.Sound levels
Sound levels have been measured in accordance with th e me as ur ing meth od s as de fin ed in:
NF EN 1553
"Agricultural machinery - Self-propelled, mounted, semi-mounted and trailed - Common safety
recommendations"
Weighted equivalent continuous acoustic pressure level at the driver's seat (closed cabin) L (A) eq:
The machine is fitted with the following components:
- 1 handle to adjust the pitch angle.
Gyrotedder
GF222T
1
20
Putting into service
Page 23
2.Coupling and uncoupling
Preparing the tractor
The machine adapts to tractors fitted with a pull bar.
The tractor nominal PTO speed must be 540 min
Coupling the machine
- Couple machine to tractor and secure hitch pin.
Gyrotedder
GF222T
-1
.
Safety chain
The machine is supplied with a ANSI/ASAE safety chain
type with a minimum ultimate system strength of
45 kN (10100 lbf).
The safety chain is intended to keep the
machine under control in the event of a loss
or failure of the hitch pin.
The safety chain must be tied around a tractor
attachment point other than the attachment bar.
Putting into service
21
Page 24
PTO shaft
Make sure that the PTO shaft is correctly
adjusted, to avoid premature wear and tear.
Gyrotedder
GF222T
The tractor PTO stub must rotate at a speed of 540 min
Separate the two half PTO shafts and connect them to
the machine's input shaft and to the tractor PTO stub.
Check the length of the PTO shaft:
- Check the maximum overlap when the machine is in
work position and the tractor turned to the direction
which provides maximum overlap.
- When the PTO shaft is in its maximum overlap
position (retracted), tubes should not butt against the
yokes. As a safety measure, a clearance (L) of at least
25 mm (1’’) must be maintained.
- When the PTO shaft is in its maximum extended
position, the tube overlap must be more than
250 mm (10’’).
If this is not the case:
• Mark length (H) to cut when the transmission is the
maximum overlap position
• Shorten the guard tubes and the transmission tubes
by the same length.
• Bevel and clean the tubes.
• Grease the inside of the outer tube.
-1
Check that there is still a minimum overlap of
250 mm (10’’) when the machine is in working
position and the tractor in line with the machine.
Never operate the PTO shaft at an angle X exceeding
30°.
22
Putting into service
Page 25
To avoid serious accidents, the PTO drive
shaft guards must be properly in place and
fixed with the chains provided.
On the machine side, attach PTO shaft guard chain
around the drawbar (1).
Immediately replace any worn or damaged
guard.
Gyrotedder
GF222T
1
Lower the pto shaft holder (1).
Adjusting the machine
The machine adjustment must be made every
time another tractor is used.
From the transport position:
- Place the machine on flat ground.
- Adjust machine pitch angle with handle ( 1) so that the
tines are at a distance D = 10 mm (0.4’’) from
the ground.
1
Putting into service
23
Page 26
Uncoupling the machine
Park the machine on an even fairly level
ground.
From the transport position:
- Remove and store safety chain on the drawbar.
Gyrotedder
GF222T
- Unfold pto shaft support (1).
- Uncouple and place PTO shaft in support (1).
- Remove hitch pin.
- Move forward with the tractor.
The machine is uncoupled.
1
24
Putting into service
Page 27
$Instructions for transport
Before placing the machine into transport
position:
- Before leaving the tractor or before
adjusting, maintaining or repairing the
machine, disengage the PTO drive, turn
off the engine, remove ignition key and
wait until all moving parts h ave c ome t o
a complete stop and apply park brake.
1.Putting the machine into transport
position
Gyrotedder
GF222T
From the working position:
- Rotate tedder rotor to position hole in line with the
transport lock (1).
- Pull handle (1) to unlock left side guard (2).
- Fold left side guard (2) until automatically locked.
Check guard is fully locked.
1
2
1
Instructions for transport
25
Page 28
- Remove the 2 handles (1).
- Pivot tine arms towards the machine inside.
- Reinstall the 2 handles (1).
- Proceed the same way on the other side.
- Position rotors horizontally using pitch angle
adjustment crank handle.
Gyrotedder
GF222T
1
1
1
The machine is in transport position.
Never engage the tractor PTO drive when the
machine is in transport position.
26
Instructions for transport
Page 29
2.Conformity with the road regulations
Before driving the machine on public roads,
ensure that the machine complies with
current highway code regulations.
- Check that the retroreflective signalling equipment is
clean before going on public roads.
Never tow the machine at a speed exceeding
40 km/h (25 mph).
Gyrotedder
GF222T
Check guard is fully locked
Regularly check the tyre pressure (1).
1
1
Instructions for transport
27
Page 30
$Instructions for work
1.Putting the machine into work
position
Gyrotedder
GF222T
From the transport position:
- Place the machine on flat ground.
- Remove the 2 handles (1).
- Pivot tine arms towards the machine outside.
- Reinstall the 2 handles (1).
- Proceed the same way on the other side.
- Adjust machine pitch angle with handle (1) so that the
tines are at a distance D = 10 mm (0.4’’) from
the ground.
1
1
- Pull handle (1) to unlock left side guard (2).
- Unfold left side guard until automatically locked.
Check guard is fully locked.
The machine is in working position.
28
Instructions for work
2
1
Page 31
2.Adjustments in working position
Before carrying out any maintenance or
repairs on the machine, switch off the tractor
engine, remove ignition key, wait until all
moving parts have come to a standstill and
apply park brake.
- Adjust machine pitch angle with handle (1).
Gyrotedder
GF222T
1
The distance between tines and soil is a very
important factor with regards to the machine
work quality and tine service life.
Instructions for work
29
Page 32
3.Machine use
Keep all persons and animals away from the
danger zone.
Before the machine engages the crop:
- Engage the tractor PTO and slowly increase the
speed up to 540 min
Groundspeed
Adapt the forward speed to the working
conditions.
-1
.
Gyrotedder
GF222T
The following factors determine the forward speed:
- The humidity level (This factor is particularly
determining when wilting).
- The crop density.
- The crop composition (blade length).
- The ground contours.
General advice:
In dense and average length crop:
- When wilting a crop with low humidity level.
• the speed is approximately of 7 to 8 km/h (4.4 -
5mph).
- When tedding a more or less dry crop.
• the speed is approximately of 10 to 12 km/h (6.3 -
7.5 mph).
• The dryer the crop, the more the PTO speed must
be reduced.
• For a very dense, humid crop composed of very
long blades, the forward speed must be reduced.
For difficult working conditions, it is
recommended to operate at a lower forward
speed.
30
Instructions for work
Page 33
Before carrying out any maintenance or
repairs on the machine, switch off the tractor
engine, remove ignition key, wait until all
moving parts have come to a standstill and
apply park brake.
1.Frequency chart
Gyrotedder
GF222T
$Maintenance and storage
Lubrication
Grease:
- The rotor housings
- The tedding rotor locking system
- The guard lock
- The pitch angle adjustment handle and its
pivot pin
Maintenance
Check:
- Tightness of all bolts and nuts
After the
first 10 hours
of use
Once per week
Every
200 hours or
at the end
of the season
3
33
Maintenance and storage
31
Page 34
2.Lubrication
Before carrying out any maintenance or
repairs on the machine, switch off the trac tor
engine, remove ignition key, wait until all
moving parts have come to a standstill and
apply park brake.
The pictorials show the points to be greased
(Part no. 09905400).
Clean grease nipples before greasing.
Gyrotedder
GF222T
Lubricate with SHELL multi-purpose grease
grade NLGI 2.
Lubrication
Lubricate the central disc of each universal
joint with PTO shaft positioned so that it is
straight.
- Every 20 hours:
• U-joints (1).
• Transmission tube (2).
- Every 100 hours:
• Guide rings (3).
32
Maintenance and storage
Page 35
Grease
The rotor housings.
The tedding rotor locking system.
Gyrotedder
GF222T
The guard lock.
The pitch angle adjustment handle and its pivot pin.
Maintenance and storage
33
Page 36
Oil
Oil with SHELL SAE 90 gear oil.
3.Maintenance
Central gearbox
The main gearbox is lubricated for life and does not
require regular maintenance.
The main gearbox is lubricated for life with 0.2 kg(0.44 lb) of SHELL multi-purpose semi-fluid
grease grade NLGI 2.
Gyrotedder
GF222T
Checking the fixing elements
Check that all nuts and bolts are sufficiently tightened.
34
Maintenance and storage
Page 37
Replacing a tine
Before leaving the tractor or before
adjusting, maintaining or repairing the
machine, disengage the PTO drive, turn off
the engine, remove ignition key and wait until
all moving parts have come to a complete
stop and apply park brake.
2 types of tines are fitted on the machine:
- Tines (1) for rotors rotating clockwise
- Tines (2) for rotors rotating
Check that the tines are f itted properly with
regards to the rotor direction of rotation.
(a).
counterclockwise (b).
Gyrotedder
GF222T
1
2
Respect mounting instructions so that the
crop's pressure (a) closes the coils.
From the working position:
- Remove attachment screw (1).
- Replace tine.
Maintenance and storage
35
Page 38
Check attachment bolt, washer and nut. Replace
if necessary.
- Reassemble the unit.
Check that the tine is properly embedded in
the tine arm.
- Tighten attachment screw:
• Torque: 20 daN m (148 lbf ft).
Gyrotedder
GF222T
Tyre pressure
-
Transport wheels (1): 2 bar (29 psi)
1
1
36
Maintenance and storage
Page 39
4.Storage
At the end of each season:
- Clean the machine thoroughly.
- Lubricate the whole machine.
- Check tyre pressure:
• 2 bar (29 psi).
- Touch up any areas of damaged paintwork.
- Check and replace worn or damaged tines.
- Put the machine under cover in a dry place.
At the start of each season:
- Read through the operator's manual again.
- Check tyre pressure:
• 2 bar (29 psi).
- Check and replace worn or damaged tines.
- Check that all nuts and bolts are sufficiently tightened.
- Make sure that all protection devices are in place and
in good condition.
Gyrotedder
GF222T
Maintenance and storage
37
Page 40
$Limited warranty
Gyrotedder
GF222T
38
Limited warranty
Page 41
Gyrotedder
GF222T
Limited warranty
39
Page 42
Page 43
Page 44
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