KUHN GMD 700 G II User manual

ASSEMBLY / OPERATOR'S MANUAL
GMD 600 G II / 700 G II / 800 G II
GMD 600 G II-HD / 700 G II-HD / 800 G II-HD
MULTIDISC MOWER
N° 95009 D.GB - 06.2006

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.

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CONTENTS
Page
Safety 2
Safetydecals 8
Technicalspecifications 11
Assembly 11
Generalinformation 17
Adapting to the tractor 18
P.T.O.shaft 21
Transport 22
Workingposition 23
Operatingthemower 24
Adjustments 25
Parkingthemachine 27
Adjustmentsandmaintenance 28
Lubrication 34
Optionalequipment 36
Troubleshootingguide 40
Storingthemower 41
Limitedwarranty 42
Copyright2006 KUHN S.A.

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SAFETY
Thesymbolaboveisusedthroughoutthismanualeverytimerecommendationsaremadeconcerningyoursafety,
the safety of others, or the good operation of the machine.
Theserecommendationsmustbe made known to all machine operators.
DESIGNATED USE OF THE MACHINE
GMD600GII /700GII /800GII / 600GII-HD/700GII-HD/800GII-HDDisc Mowers must only be used for the
work which they have beendesigned:mowingonthegroundofhayfields,grasssilagefieldsandimprovedpastures
forthepurposeofharvestingfodderforfeedinglivestock.
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.
GMD 600 GII / 700 GII / 800 GII / 600 GII-HD/ 700 GII-HD / 800 GII-HD Disc Mowers must only be operated,
maintainedandrepairedbycompetentpersonswhoarefamiliarwithmachinespecificationsandoperationandare
awareofanydangerinvolved.
Theoperatormustimperativelyrespectcurrentlegislationconcerning:
-accidentprevention,
- work safety,
-public traffic circulation.
All safety advice indicated on the machine must be strictly observed.
Themanufacturerisnotheldliableforanydamageresultingfrommachinemodificationscarriedoutbytheoperator
himselforbyathirdpartywithoutpreviouswrittenagreementfromthemanufacturer.

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GENERAL SAFETY RECOMMENDATIONS
Beforeoperatingthemachine,alwaysensurethattractorandmachineareinaccordancewithworksafetyandroad
trafficregulations.
BASICPRINCIPLES
1. Inadditiontotherecommendationsgiveninthismanual,legislationonworksafetyandaccidentprevention
must also be respected.
2. Adviceis indicatedonthe machine, specifyingsafetyrecommendations in ordertoprevent accidents.
3. Beforetravellingonpublicroads,theoperatormustensurethatthemachineconformstoroadtrafficregulations.
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. Donot wear loose clothingwhich could becomecaught up inmoving elements.
6. Useatractorequippedwithasafetycab.Keepwindowsandroofhatchclosedforreducedsoundlevelwhile
operatingthePTOdrivenimplement.
7. Beforestartingupthemachineandbeginningwork,checkthesurroundingarea(bewareofchildren!).Make
surethereissufficientvisibility.Keepallpeopleandanimalsawayfromthedangerzoneofthemachine(risk
ofprojection!).
8. Carryingpeople oranimals on themachine when workingorin transport isstrictly forbidden.
9. Machine must only be attached to tractor using means provided and in accordance with current safety
standards.
10. Whenattaching or removing the machine,placetheparkingstandinto the corresponding position.
11. Specialcare should be takenwhenattaching or removing themachinefromthe tractor.
12. Before attaching the machine, ensure that the front tractor axle is sufficiently ballasted.
Ballastisto be placed onthesupportsprovidedinaccordancewithinstructionsof the tractor manufacturer.
13. Donotsurpassthemaximumaxleloadortheoveralltransportweightasprescribedbythetractormanufacturer.
14. Do not surpass the maximum transport width authorized by road traffic regulations.
15. Beforetransportingthemachineonpublicroads,ensurethatalllegallyrequiredguardsandindicators(lights,
reflectors...) are in place andin good operation.
16. All operating controls (cords, cables, rods ...) must be positioned so that they cannot be set off accidently,
riskingaccidentor damage.
17. Beforetransportonpublicroads,locatethemachineintoitstransportpositionasinstructedinthisoperator’s
manual.

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18. Neverleavethe tractorseatwhilethe machineisoperating.
19. Drive speed must be adapted to ground conditions as well as roads and paths.
Alwaysavoidabruptchangesofdirection.
20. Precision steering, tractor adherence, road holding and efficient braking are influenced by the type of
implement,weight,ballastoffrontaxle,groundorroad conditions.Itisthereforeofutmostimportance tobe
cautiousineverygivensituation.
21. Beparticularlycautiouswhenturningcorners,payingattentiontomachineoverhang,length,heightandweight.
22. Beforeoperatingthemachine,ensurethatallsafetyguardsarefirmlyinplaceandingoodcondition.Ifworn
ordamaged,replaceimmediately.
23. Beforeoperatingthemachine,checktightnessofnutsandbolts,particularlyontoolfixingelements(blades,
tines, knives, spades ...). Retighten if necessary.
24. Keepclearofthemachine operatingarea.
25. WARNING!Dangerofcrushing and shearingcanexistwhencomponentsareoperatedby hydraulic or
pneumaticcontrols.
26. Beforeleavingthetractororbeforeadjusting,maintainingorrepairingthemachine,turnofftheengine,remove
ignition key and wait until all moving parts have come to a complete stop.
27. Donotstandbetweenthetractorandthemachineunlessthehandbrakeistightand/orstopshavebeenplaced
underthewheels.
28. Beforeanyadjustments,maintenanceorrepairsarecarriedout,ensurethatthemachinecannotbestarted
up accidentally.
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. Donotstandbetweenthetractorandthemachinewhenoperatingtheoutercontrol leveroftheliftmechanism.
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.

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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 correct PTOoverlapwhenatwork andintransport.
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 speed (rotational frequency) and direction are in accordance with
manufacturer'srecommendations.
9. Beforeengaging PTO, keepallpeopleandanimalsclear fromthemachine.
10. NeverengagePTOshaftwhentractormotoristurnedoff.
11. NeversurpassPTOanglerecommendedbythemanufacturer.
12. WARNING!RotatingelementscancontinueturningmomentarilyafterPTOisdisengaged.Keepclearuntilall
rotating elements are at a standstill.
13. Whenremovingthemachine, locate PTO shaftonthesupportsprovided.
14. Fit safety cap on tractor PTO.
15. Replaceanyworn ordamagedPTOguards immediately.
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.
Rotationspeed...rpm(AmericanMeasure)isalsoexpressedinmetricmeasure:Rotationalfrequency...min-1.Both
unitsareequivalent, for example :Rotationspeed540rpmequalsRotationalfrequency 540 min-1.

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4. Itisstronglyrecommendedthattheoperatormarksthehydraulicconnectionsbetweentractorandmachineto
avoidmakingawrongconnection.WARNING!Functionscouldbereversed(forexample:lift/lower).
5. Regularlycheckthehydraulichoses!Replacethehydraulichosesevery5years.Damagedorwornhoses must
immediatelybe replaced .
Whenreplacingthehydraulichoses,makesuretousehoseswiththespecificationsandqualityrecommended
bythemanufacturer of the machine.
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.
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.

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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 onlygenuineKUHNspareparts.
5. Toavoidcreatingdangerousoutofbalanceforces,alwaysreplacemissing,damagedorwornknivesinpairs.
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 positionandviceversamayexist. Topreventpossibleinjury,beextra carefulwhenmaneuveringand
ensure that everyone is at a safe distance away from the machine.
10.PTOdrivetothemowermustneverbeengagedunlessthecutterbarskidshoesareincontactwiththeground
andtheprotectivecoverisfoldeddown.
11.Groundof thepastures to bemown must befree of foreignobjects.
12.Even when the machine is used in accordance with its purpose, objects may be projected. It is therefore
imperativethateveryonebekeptawayfromthedangerzone,thatextracarebetakenandthatextra precaution
(suchassafetyindicators)betakenwhenmowingpasturesalongsideroadsornearpublicareas(parks,schools
etc.).
13.Nevermowinreverse.
14.WhendisengagingthePTOdrive,movingpartscontinuetorotateforsometime.Waitforallmovingpartstocome
toacompletestopbefore 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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SAFETY DECALS
THEFOLLOWINGSAFETYPICTORIALSHAVE BEEN PLACED ON YOUR MACHINE IN THE AREAS
INDICATED.THEYAREINTENDEDFORYOURPERSONALSAFETYANDFORTHESAFETYOFTHE
PEOPLE WORKING WITH YOU. THE TEXT SHOWN ON THEM GIVES THEIR PRECISE MEANING.
KEEP THE PICTORIALS LEGIBLE. IF THEY ARE NOT, REPLACE THEM.
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