KUHN GMD 400 Bedienungsanleitung

ASSEMBLY / OPERATOR'S MANUAL

GMD 400 - 500

GMD 400 HD - 500 HD

MULTIDISC MOWER

N° 95001 C.GB - 03.2003

DEAR OWNER,

In buying a KUHN machine you have chosen wisely. Into it have gone years of thought,

researchandimprovements.Youwillfind,ashavethousandsofownersallovertheworld,that

you have the best that engineering skill and actual field testing can produce. You have

purchased a dependable machine, but only by 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.Theperformanceyougetfromthismachineislargelydependantuponhowwellyou

readandunderstandthismanualandapplythisknowledge.PleaseDONOTASSUMETHAT

YOU KNOW HOW TO OPERATE AND MAINTAIN YOUR MACHINE before reading this

manual carefully. KEEP THIS MANUAL AVAILABLE FOR REFERENCE.

YourKUHN dealerwillinstruct youonthegeneral operationofyourmachine. He isinterested

that you get the best performance possible and will be glad to answer any special questions

that may arise regarding the operation of the KUHN 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.

When ordering service parts it is important that you indicate the type of machine concerned

and its serial number.

Forthisreasonpleasecompletethemodelidentificationplatediagrambelowwiththerequired

information. This will provide you with an easy reference for future service parts orders.

ABOUT IMPROVEMENTS

KUHN iscontinuallystriving to improveitsproducts and,therefore,reserves the righttomake

improvements or changes when it becomes practical to do so, without incurring any

obligations to make changes or additions to the equipment sold previously.

- 1 -

CONTENTS

Safety 2

Safetydecals 9

Assembly instructions 11

Technicalspecifications 12

Generalinformation 17

Fitting to the tractor 18

P.T.O.shaft 20

Workingpositionandadjustments 21

Transportandparkingthemachine 24

Operatingthemower 25

Lubrication 26

Adjustmentsandmaintenance 28

Optionalequipment 33

Troubleshootingguide 35

Storingthemower 36

Limitedwarranty 38

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SAFETY

Thesymbolaboveisusedthroughoutthismanualeverytimerecommendationsaremadeconcerningyoursafety,

the safety of others, or the good operation of the machine.

Theserecommendationsmust be made known to all machine operators.

DESIGNATED USE OF THE MACHINE

TheGMD400-500-400HD-500HDDiscMowersmustonlybeusedfortheworkwhichtheyhavebeendesigned:

mowingonthegroundofhayfields,grasssilagefieldsandimprovedpasturesforthepurposeofharvestingfodder

for feeding livestock.

Themanufacturerisnotheldliableforanydamageresultingfrommachineapplicationsotherthanthosespecified

bythemanufacturer.

Any use other than the designated operation is at the risk and responsibility of the operator.

Designated use of the machine also means :

-followingoperation,maintenanceandrepairrecommendationsgivenbythemanufacturer;

-using only genuinespare parts, equipmentand accessories asdesignated by themanufacturer.

TheGMD400-500-400HD-500HDDiscMowersmustonlybeoperated,maintainedandrepairedbycompetent

persons who are familiar with machine specifications and operation and are aware of any danger involved.

Theoperatormustimperativelyrespectcurrentlegislationconcerning:

-accidentprevention,

- work safety,

-public traffic circulation.

All safety advice indicated on the machine must be strictly observed.

Themanufacturerisnotheldliableforanydamageresultingfrommachinemodificationscarriedoutbytheoperator

himselforbyathirdpartywithoutpreviouswrittenagreementfromthemanufacturer.

- 3 -

GENERALSAFETYRECOMMENDATIONS

Before operating the machine, always ensure that tractor and machine are in accordance with work safety and

road traffic regulations.

BASICPRINCIPLES

1. Inadditiontotherecommendationsgiveninthismanual,legislationonworksafetyandaccidentprevention

mustalsoberespected.

2. Advice is indicated on the machine, specifying safety recommendations in order to prevent accidents.

3. Before travelling on public roads, the operator must ensure that the machine conforms to road traffic

regulations.

4. Before starting work, the operator must be familiar with all machine controls, handling devices and their

functions. Once at work, it is too late to do so !

5. Useatractorequippedwithasafetycab.Keepwindowsandroofhatchclosedforreducedsoundlevelwhile

operatingthePTOdrivenimplement.

6. Beforestartingupthemachineandbeginningwork,checkthesurroundingarea(bewareofchildren!).Make

surethereissufficientvisibility.Keepallpeopleandanimalsawayfromthedangerzoneofthemachine(risk

of projection!).

7. Carrying people or animals on the machine when working or in transport is strictly forbidden.

8. Machine must only be attached to tractor using means provided and in accordance with current safety

standards.

9. When attaching or removing the machine, place the parking stand into the corresponding position.

10. Special care should be taken when attaching or removing the machine from the tractor.

11. Before attaching the machine, ensure that the front tractor axle is sufficiently ballasted.

Ballastis to be placed onthesupportsprovidedinaccordancewithinstructions of the tractormanufacturer.

12. Donotsurpassthemaximumaxleloadortheoveralltransportweightasprescribedbythetractormanufacturer.

13. Do not surpass the maximum transport width authorized by road traffic regulations.

14. Beforetransportingthemachineonpublicroads,ensurethatalllegallyrequiredguardsandindicators(lights,

reflectors ...) are in place and in good operation.

15. All operating controls (cords, cables, rods ...) must be positioned so that they cannot be set off accidently,

risking accident or damage.

16. Beforetransportonpublicroads,locatethemachineintoitstransportpositionasinstructedinthisoperator’s

manual.

17. Neverleave thetractor seat while the machineis operating.

- 4 -

18. Drive speed must be adapted to ground conditions as well as roads and paths.

Always avoid abrupt changes of direction.

19. Precision steering, tractor adherence, road holding and efficient braking are influenced by the type of

implement,weight,ballastoffront axle,groundorroadconditions.Itis thereforeofutmostimportancetobe

cautious in every given situation.

20. Beparticularlycautiouswhenturningcorners,payingattentiontomachineoverhang,length,heightandweight.

21. Keep clear of the machine operating area.

22. WARNING ! Danger of crushing and shearing can exist when components are operated by hydraulic or

pneumaticcontrols.

23. Beforeleavingthetractororbeforeadjusting,maintainingorrepairingthemachine,turnofftheengine,remove

ignition key and wait until all moving parts have come to a complete stop.

24. Donotstandbetweenthetractorandthemachineunlessthehandbrakeistightand/orstopshavebeenplaced

underthewheels.

25. Beforeanyadjustments,maintenanceorrepairsarecarriedout,ensurethatthemachinecannotbestarted

up accidentally.

PRECAUTIONS TO BE TAKEN BEFORE OPERATING THE MACHINE

1. Do not wear loose clothing which could be caught up in moving parts.

2. Wear the individual protection equipment corresponding to the work which is planned (gloves, shoes, eye

protection, helmet, ear protectors...).

3. All operating controls (cords, cables, rods ...) must be positioned so that they cannot be set off accidentally,

causing accident or damage.

4. Beforeoperatingthe machine,checkthetightnessofall nutsandbolts,particularlyon rotatingparts(blades,

tines, knives, spades ...)

5. Before operatingthe machine, ensurethat allsafety guardsare firmlyin placeand ingood condition.If worn

ordamaged,replaceimmediately.

- 5 -

ATTACHMENT

1. Whenattachingorremovingthemachinefromthetractor,positionhydraulicliftcontrolleverinsuchawaythat

it cannot be set off accidentally.

2. Whenattachingthemachinetotractor3-pointlinkage,ensurethatdiameteroflinkpinscorrespondstodiameter

of ball joints.

3. WARNING ! Danger of crushing and shearing can exist in the lifting zone of the 3-point linkage !

4. Donotstandbetweenthetractorandthemachinewhenoperatingtheoutercontrolleveroftheliftmechanism.

5. In transport, the machine lift mechanism should be stabilized by tractor tie rods to avoid floatation and side

shifting.

6. When transporting the machine in the raised position, lock the lift control lever in place.

7. Donotoperatethemachinewithnarrowwheeltracktractorswhenworkingortransportingonunevenorsloping

terrain.

POWERTAKE-OFF

1. OnlyusePTO shaft supplied withthemachineor recommended by the manufacturer.

2. PTO guards must always be in place and in good condition.

3. Checkfor correctPTOoverlapwhenat workandintransport.

4. BeforeattachingorremovingthePTOshaft,disengagePTOshaft,turnoffengineandremoveignitionkey.

5. IfaprimaryPTOshaftisequippedwithaslipclutchorafreewheel,thesemustbefitted onthemachinePTO.

6. Ensure that PTO shaft is always correctly fitted and locked into place.

7. Make sure guards are correctly in place and secured with the safety chains provided.

8. Before engaging PTO, ensure that PTO frequency and direction are in accordance with manufacturer's

recommendations.

9. Beforeengaging PTO,keepallpeopleandanimals clearfromthemachine.

10. NeverengagePTOshaftwhentractormotoristurnedoff.

- 6 -

11. NeversurpassPTOanglerecommendedbythemanufacturer.

12. WARNING!RotatingelementscancontinueturningmomentarilyafterPTOisdisengaged.Keepclearuntilall

rotating elements are at a standstill.

13. Whenremovingthemachine,locatePTO shaft on thesupportsprovided.

14. Fit safety cap on tractor PTO.

15. Replaceanywornor damagedPTOguardsimmediately.

HYDRAULICSYSTEM

1. WARNING! Hydraulicsystem is underpressure(maximum working pressure: 200 bars/2900psi).

2. When fitting hydraulic motors or cylinders, ensure that connections have been made correctly, as per

manufacturer’sinstructions.

3. Before connecting hoses to the tractor hydraulics, ensure that tractor and machine circuits are not under

pressure.

4. Itisstronglyrecommendedthattheoperatormarksthehydraulicconnectionsbetweentractorandmachineto

avoidmakingawrongconnection.WARNING!Functionscouldbereversed(forexample:lift/lower).

5. Regularlycheckthehydraulichoses!Replacethehydraulichosesevery5years.Damagedorwornhoses must

immediatelybe replaced .

Whenreplacingthehydraulichoses,makesuretousehoseswiththespecificationsandqualityrecommended

bythe manufacturer of themachine.

6. Should a leak be found, take all necessary precautions to avoid accidents.

7. Any liquid under pressure (particularly oil from hydraulics) can penetrate the skin and cause severe injury. If

injured,see a doctor immediately,therecould be dangerofinfection.

8. Beforeany adjustments, maintenanceorrepairs are carried out,lowerthe machine, depressurize thecircuit,

turnofftheengineandremoveignitionkey.

- 7 -

MAINTENANCE

1. Beforecheckinganymachinemalfunctionandbeforeadjusting,maintainingorrepairingthemachine,disengage

PTO,turnoffengineandremoveignitionkey.

2. Check tightness of nuts and bolts regularly. Retighten if necessary.

3. If the machine is raised, prop it up in a stable position before carrying out any maintenance work.

4. Whenreplacingaworkingpart,wearprotectiongloves and only use standardized tools.

5. Itisforbiddentodiscardanyoil,greaseorfilters.Thesemustbegiventowastedisposalorganisationstoprotect

theenvironment.

6. Disconnect power source before any work is done on the electric system.

7. Check safety guardsregularly, particularly those that aresubject towear. Replace immediately if damaged.

8. Sparepartsusedmustbeinaccordancewithspecificationsandstandardsasdefinedbythemanufacturer.Use

onlygenuineKUHNparts!

9. Before any electric welding is carried out on tractor or attached machine, disconnect generator and battery

terminals.

10.Repairs on elements under pressure or tension (springs, accumulators etc.) must only be carried out by

competentpersonswithstandardizedequipment.

SPECIAL SAFETY RECOMMENDATIONS

1. Use a tractor equipped with an enclosed cab with windows made of safety glass and kept closed. It is

recommendedtofitpolycarbonatescreensinsidethetractorsafetycab'ssideandrearwindowsortoinstallmesh

guardson the exteriorof them.

2. Stay a safe distance away from the mower when discs are rotating.

3. For safe machine operation, it is imperative that cutting tools be fitted in accordance with the manufacturer’s

recommendations. Use only the tool outfit supplied with the machine.

4. Eachtimebeforeusingthemower,inspectconditionofcuttingelements(knives,discs).Replaceanymissing,

wornordamagedcutting elements immediately. Use onlygenuine KUHNspareparts.

5. Toavoidcreatingdangerousoutofbalanceforces,alwaysreplacemissing,damagedorwornknivesinpairs.

- 8 -

6. When replacing knives or discs, systematically inspect their securing elements as per the manufacturer’s

recommendations.

7. Regularly inspect the disc mower’s protection cover. Worn or damaged protection covers must be replaced

immediately.

8. Protectiondevices(suchasguards,shieldsetc.)areintendedtopreventstones,rocksorotherforeignobjects

frombeingprojected.Theyalsopreventaccesstothemachine’sdangerzones.Therefore,itisimperativethat

protectiondevicesare put in placeandproperly secured each timebeforeusing the machine.

9. Crushingandshearingzoneswhichcouldcauseseriousbodilyinjurywhenchangingthemachinefromtransport

towork positionandviceversamay exist. Topreventpossibleinjury,be extracarefulwhenmaneuveringand

ensure that everyone is at a safe distance away from the machine.

10.PTOdrivetothemowermustneverbeengagedunlessthecutterbarskidshoesareincontactwiththeground

andtheprotectivecoverisfoldeddown.

11.Groundof the pastures to be mown mustbe free offoreign objects.

12.Evenwhenthemachineisusedinaccordancewithitpurpose,objectsmaybeprojected.Itisthereforeimperative

thateveryonebekeptawayfromthedangerzone,thatextracareistakenandthatextra precaution(suchas

safetyindicators)betakenwhenmowingpastures alongsideroadsor nearpublicareas(parks,schoolsetc.).

13.Nevermowinreverse.

14.WhendisengagingthePTOdrive,movingpartscontinuetorotateforsometime.Waitforallmovingpartstocome

toacompletestop before approaching the machine.

15.Ifanobstructionishit,stopthetractorimmediately,disengagePTOdrive,turnoffengine,removeignitionkey

and wait for all moving parts to come to a complete stop.

Checktheentiremachineforanydamagebeforeresumingwork.

16.Itisstronglyrecommendedtohaveyourmachinecheckedbyyourdealeraftereachseason,especiallyblades

and discs and their fixing devices (nuts, bolts etc.).

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