KUHL GMD240 User manual

KN204AGB H
OPERATOR'S MANUAL
Disc mower
GMD240-280-310
KN204AGB H
- English - 08-2014

Dear Owner
Disc mower
GMD240-280-310
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KN204AGB H
$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. 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.
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 the conditions of use (products to handle, soil, weather
conditions, etc...).
Designated use of the machine
The GMD240-GMD280-GMD310 mowers must only be used forthe purpose for which they were manufactured:
mowing on the ground of arable meadows, seeded grassland and permanent meadows for the purpose of
harvesting fodder for feeding livestock.

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GMD240-280-310
Contents
KN204AGB H
$Contents
Dear Owner.....................................................................................................................1
Contents..........................................................................................................................2
Identification of the machine.........................................................................................4
Front view..........................................................................................................................................4
Rear view...........................................................................................................................................4
Model identification plate ................................................................................................................5
Optional equipment..........................................................................................................................6
Safety...............................................................................................................................7
Description of symbols used in this document.............................................................................7
Safety instructions...........................................................................................................................8
Location and description of safety decals on the machine .......................................................20
Road safety equipment and recommendations...........................................................................24
Machine specifications................................................................................................25
Description and glossary...............................................................................................................25
Technical specifications................................................................................................................26
Required equipment.......................................................................................................................27
Sound levels ...................................................................................................................................30
Putting into service......................................................................................................31
Description of control elements....................................................................................................31
Coupling and uncoupling..............................................................................................................32
Instructions for transport............................................................................................43
Putting the machine into transport position................................................................................43
Conformity with the road regulations...........................................................................................45

Contents
Disc mower
GMD240-280-310
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KN204AGB H
Instructions for work................................................................................................... 46
Putting the machine into work position.......................................................................................46
Putting the machine in headland turn position...........................................................................49
Adjustments in working position..................................................................................................50
Machine use....................................................................................................................................52
Optional equipment..................................................................................................... 56
1 3/8’’ - 6 spline pto shaft...............................................................................................................56
32 x 38 - 8 spline pto shaft.............................................................................................................56
High cone disc kit...........................................................................................................................57
Inner swath disc.............................................................................................................................57
Inner swath shield..........................................................................................................................58
Raised skid shoes..........................................................................................................................58
Side deflector..................................................................................................................................59
Side deflector with high cone disk...............................................................................................59
Longer hitch pins...........................................................................................................................60
Chain stroke limiter........................................................................................................................61
Lighting and signalling..................................................................................................................62
Lateral signalling equipment (for France)....................................................................................62
Quick hitch connector ...................................................................................................................63
1000 min-1 drive kit........................................................................................................................63
Wear skids ......................................................................................................................................63
Maintenance and storage............................................................................................ 64
Frequency chart .............................................................................................................................64
Lubrication......................................................................................................................................65
Maintenance....................................................................................................................................71
Storage............................................................................................................................................87
Troubleshooting guide................................................................................................88
Appendix ...................................................................................................................... 90
Calculating the load on an axle.....................................................................................................90
Limited warranty.......................................................................................................... 96

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GMD240-280-310
Identification of the machine
KN204AGB H
$Identification of the machine
1. Front view
2. Rear view

Identification of the machine
Disc mower
GMD240-280-310
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KN204AGB H
3. Model identification plate
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.
Type: GMD240-GMD280-GMD310
Serial no.:

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GMD240-280-310
Identification of the machine
KN204AGB H
4. Optional equipment
- Tick box corresponding to the equipment fitted on
your machine:
GMD240-280
GMD280
GMD240-280-310
GMD310
Inner swath disc.
Inner swath shield.
High cone disc kit.
1 3/8’’ - 6 spline pto shaft.
32 x 38 - 8 spline pto shaft.
Raised skid shoes.
Side deflector.
Side deflector with high cone disk.
Longer hitch pins.
Chain stroke limiter.
Lighting and signalling.
Lateral signalling equipment (for France).
Quick hitch connector.
Wear skids.
1000 min-1 drive kit.

Safety
Disc mower
GMD240-280-310
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KN204AGB H
$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.
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.

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GMD240-280-310
Safety
KN204AGB H
2. Safety instructions
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 trained
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.
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 for 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 legislation concerning accident prevention, work 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 and accessories, as recommended
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 resulting from machine modifications carried out
by the operator himself or by a third party without previous written agreement from the manufacturer.