KUHN GA4121GM User manual

Original instructions
KN129DGB D
Read carefully before starting the machine
OPERATOR'S MANUAL
Gyrorake
D0001 > D9999
GA4121GM
KN129DGB D
- English - 04-2018
*KN129DGB_D*

1. - Dear Owner
GA4121GM
1
KN129DGB D
Gyrorake
1. Dear Owner
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 this
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 are 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. We therefore reserve 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.
Wear parts
Wearing parts fitted on our machines have been tested in very different situations to optimize their service
life. Nevertheless, the service life depends highly on theconditions of use (products to handle, soil, weather
conditions, etc...).
Designated use of the machine
The GA4121GM Gyrorake must only be used for the work for which it has been designed: raking on the
ground and forming windrows of pre-mowed fodder and straw.
Document illustrations
The illustrations in this manual may be based on one type of machine only. However, all instructions apply
to all machines covered in this manual.
Copyright 2018 KUHN

GA4121GM
22. - Contents
KN129DGB D
Gyrorake
2. Contents
1. Dear Owner .....................................................................................................................1
2. Contents..........................................................................................................................2
3. Identification of the machine.........................................................................................5
3.1 Front view ........................................................................................................................................ 5
3.2 Rear view......................................................................................................................................... 5
3.3 Model identification plate .................................................................................................................6
3.4 Optional equipment.......................................................................................................................... 7
4. Safety...............................................................................................................................8
4.1 Description of symbols used in this document.................................................................................8
4.2 Safety instructions ...........................................................................................................................9
4.2.1 Introduction......................................................................................................................... 9
4.2.2 Read and follow the safety instructions..............................................................................9
4.2.3 Precautions to be taken before carrying out any operations on the machine..................... 9
4.2.4 Precautions to take before using the machine ................................................................. 10
4.2.5 Precautions when driving .................................................................................................10
4.2.6 Precautions when driving on public roads.........................................................................11
4.2.7 PTO shaft.......................................................................................................................... 15
4.2.8 Precautions during manoeuvres....................................................................................... 17
4.2.9 Remote controlled components........................................................................................ 17
4.2.10 Tyres.................................................................................................................................17
4.2.11 Safety decals.................................................................................................................... 17
4.2.12 Waste disposal .................................................................................................................18
4.2.13 Precautions for maintenance and repair work.................................................................. 18
4.2.14 Projection of stones and foreign objects........................................................................... 19
4.2.15 Precautions for machine use............................................................................................ 19
4.3 Location and description of safety decals on the machine ............................................................ 20
4.3.1 Location of safety decals..................................................................................................20
4.3.2 Description of safety decals.............................................................................................. 21
5. Machine specifications................................................................................................23
5.1 Description and glossary ............................................................................................................... 23
5.2 Technical specifications ................................................................................................................. 24
5.3 Required equipment ......................................................................................................................25
5.3.1 Primary PTO shaft............................................................................................................25
5.4 Sound levels ..................................................................................................................................25

2. - Contents
GA4121GM
3
KN129DGB D
Gyrorake
-
6. Putting into service...................................................................................................... 26
6.1 Coupling and uncoupling............................................................................................................... 26
6.1.1 Description of coupling elements ..................................................................................... 26
6.1.2 Preparing the tractor......................................................................................................... 26
6.1.3 Coupling the machine.......................................................................................................28
6.1.4 Primary PTO shaft............................................................................................................ 30
6.1.5 Hydraulic connections......................................................................................................31
6.1.6 Electrical connections....................................................................................................... 32
6.1.7 Uncoupling the machine................................................................................................... 32
7. Instructions for transport............................................................................................ 34
7.1 Putting the machine into transport position ................................................................................... 34
7.2 Conformity with the road regulations............................................................................................. 38
8. Instructions for work................................................................................................... 39
8.1 Putting the machine into work position.......................................................................................... 39
8.2 Adjustments in working position .................................................................................................... 41
8.2.1 Wheel height adjustment.................................................................................................. 41
8.2.2 Swath screen adjustment................................................................................................. 43
8.3 Machine use .................................................................................................................................. 46
8.3.1 Drive speed...................................................................................................................... 46
9. Optional equipment..................................................................................................... 47
9.1 1 3/8 - 6 spline pto shaft ................................................................................................................ 47
9.2 1 3/8 - 6 spline wide angle u-joint drive ......................................................................................... 47
9.3 Front support wheel....................................................................................................................... 47
9.3.1 Fitting................................................................................................................................ 48
9.3.2 Adjustments...................................................................................................................... 48
9.4 Bogie axles.................................................................................................................................... 50
9.4.1 Fitting................................................................................................................................ 50
9.4.2 Machine use..................................................................................................................... 51
9.4.3 Lubrication........................................................................................................................ 52
9.5 Three point frame damper............................................................................................................. 52
9.5.1 Fitting................................................................................................................................ 52
9.6 Hydraulic windrow curtain.............................................................................................................. 53
9.6.1 Preparing the tractor......................................................................................................... 53
9.6.2 Hydraulic connections......................................................................................................53
9.6.3 Putting the machine into transport position...................................................................... 53
9.6.4 Putting the machine into work position............................................................................. 56
9.6.5 Adjustments...................................................................................................................... 57
9.6.6 Maintenance..................................................................................................................... 59
9.6.7 Storage............................................................................................................................. 59

GA4121GM
42. - Contents
KN129DGB D
Gyrorake
-9.7 Lateral signalling equipment..........................................................................................................60
9.8 Europe signalling equipment .........................................................................................................60
9.8.2 Fitting................................................................................................................................ 61
9.8.3 Electrical connection.........................................................................................................61
9.9 USA signalling equipment.............................................................................................................. 62
9.9.1 Coupling and uncoupling..................................................................................................62
10. Maintenance and storage ............................................................................................63
10.1 Frequency chart............................................................................................................................. 63
10.2 Lubrication .....................................................................................................................................64
10.2.1 PTO shaft..........................................................................................................................64
10.2.2 Rotor................................................................................................................................. 65
10.2.3 Grease..............................................................................................................................65
10.2.4 Oil.....................................................................................................................................66
10.3 Maintenance .................................................................................................................................. 67
10.3.1 Checking the fixing elements............................................................................................67
10.4 Storage .......................................................................................................................................... 68
10.4.1 At the end of each season................................................................................................68
10.4.2 At the start of each season...............................................................................................68
11. Troubleshooting guide.................................................................................................69
12. Appendix.......................................................................................................................70
12.1 Calculating the load on an axle...................................................................................................... 70
13. Limited Warranty ..........................................................................................................80

3. - Identification of the machine
GA4121GM
5
KN129DGB D
Gyrorake
3. Identification of the machine
3.1 Front view
3.2 Rear view

GA4121GM
63. - Identification of the machine
KN129DGB D
Gyrorake
3.3 Model identification plate
Please write below the type and serialnumber of the
machine. This information is to be given to the Kuhn
authorized dealer for any spare parts order or
warranty claim.
Type: GA4121GM
Serial no.:
TYPE
MASSE kg
KUHN S.A.
67700 SAVERNE - FRANCE
N°
MADE IN FRANCE
TYPE
MASSE kg
KUHN S.A.
67700 SAVERNE - FRANCE
N°
MADE IN FRANCE

3. - Identification of the machine
GA4121GM
7
KN129DGB D
Gyrorake
3.4 Optional equipment
- Tick box corresponding to the equipment fitted on
your machine:
1 3/8 - 6 spline pto shaft.
1 3/8 - 6 spline wide angle u-joint drive.
Front support wheel.
Bogie axles.
Three point frame damper.
Hydraulic windrow curtain.
Lateral signalling equipment.
Europe signalling equipment.
Adaptation parts (Europe signalling equipment).
USA signalling equipment.

GA4121GM
84. - Safety
KN129DGB D
Gyrorake
4. Safety
4.1 Description of symbols used in
this document
This symbol indicates a potentially hazardous
situation that if not avoided, could result in serious
bodily injury.
Thissymbolisusedto 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.