KUHN GA 7301 User manual

ASSEMBLY/ OPERATORS MANUAL
GA 7301 - GYRORAKE
N° 95304 D.GB - 09.2003

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.

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CONTENTS
Safety 2
Safety decals 8
Technical specifications 10
Assembly 10
Attachment: - Fitting to the tractor 20
-PTOtransmissionshaft 21
Workingpositionandadjustments 22
Operation 24
Forward speed 24
Transportposition 25
Parking the machine 26
Lubrication 26
Optionalequipment 27
Electrical connector (for North America) 30
Conditionsof limited warranty 32
Copyright 2003 KUHN S.A.

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SAFETY ADVICE
Theabovesymbolisusedthroughoutthismanualeverytimerecommendationsaremadeconcerningyoursafety,
the safety of others, or the good operation of the machine.
Theserecommendationsmust be made known to all machine operators.
DESIGNATED USE OF THE MACHINE
The GA7301 Gyrorakemustonly be used fortheworkfor which it hasbeendesigned: raking on thegroundand
forming windrows of pre-mowed fodder and straw.
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.
Designated use of the machine also means :
- following operation, maintenance and repair recommendations given by the manufacturer ;
- using only genuine spare parts, equipment and accessories as designated by the manufacturer.
The GA 7301 Gyrorakemust only be operated,maintainedandrepaired by competent personswhoare familiar
with machine specifications and operation and are aware of any danger involved.
The operator must imperatively respect current legislation concerning :
- accident prevention,
- work safety,
- public traffic circulation.
All safety advice indicated on the machine must be strictly observed.
The manufacturer is not held liable for any damage resulting from machine modifications carried out by the
operatorhimselforbyathirdpartywithoutpreviouswrittenagreementfromthemanufacturer.

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GENERAL SAFETY RECOMMENDATIONS
Beforeoperatingthemachine,alwaysensurethattractorandmachineareinaccordancewithworksafetyandroad
trafficregulations.
BASICPRINCIPLES
1. Inadditiontotherecommendationsgiveninthismanual,legislationonworksafetyandaccidentpreventionmust
alsobe respected.
2. Adviceis indicated on themachine, specifying safety recommendationsin order to preventaccidents.
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 this !
5. Useatractorequippedwithasafetycab. Keep windows and roof hatch closed forreduced soundlevel while
operatingthePTOdriveimplement.
6. Beforestartingupthemachineandbeginningwork, checkthesurroundingarea(bewareofchildren!).Make
sure there is sufficient visibility.
Keepall people andanimals away fromthedanger zone ofthe machine (riskof projection !)
7. Carryingpeople or animalson the machinewhen working or intransport is strictlyforbidden.
8. Machine must only be attached to tractor using means provided and in accordance with current safety
standards.
9. Whenattachingorremoving the machine, place theparkingstandintothecorresponding position.
10. Specialcare should betakenwhen attaching or removingthemachinefrom the tractor.
11. Before attaching the machine, ensure that the front tractor axle is sufficiently ballasted.
Ballast is to be placed on the supports provided in accordance with instructions of the tractor manufacturer.
12. Donotexceedthemaximumaxleloadortheoveralltransportweightasprescribedbythetractormanufacturer.
13. Donot exceed themaximumtransport width authorized byroadtrafficregulations.
14. Beforetravellingonpublicroads,ensurethatalllegallyrequiredguardsandindicators(lights,reflectors...)are
inplaceandingoodoperation.

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15. All operating controls (cords, cables, rods...) must be positioned so that they cannot be set off accidently,
risking accident or damage.
16. Before traveling on public roads, put the machine into its transport position as instructed in this operator’s
manual.
17. Never leave the tractor seat while the machine is operating.
18. Drive speed must be adapted to ground conditions as well as to 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, ballast of front axle, ground or road conditions. It is therefore of utmost importance to
be cautious in every given situation.
20. Be particularly cautious when turning corners, paying attention to machine overhang, length, height and
weight.
21. Keep clear of the machine operating area.
22. WARNING ! Danger of crushing and shearing can exist when components are operated by hydraulic or
pneumatic controls.
23. Before leaving the tractor or before adjusting, maintaining or repairing the machine, turn off the engine,
remove the ignition key and wait until all moving parts have come to a complete stop.
24. Do not stand between the tractor and the machine unless the hand brake is tight and/or stops have been
placed under the wheels.
25. Before any adjustments, maintenance or repairs are carried out, ensure that the machine cannot be started
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,checkthetightnessof allnutsandbolts,particularlyon rotatingparts(blades,
tines, knives, spades ...)
5. Beforeoperatingthemachine, ensurethatallsafety guards are firmly in place andin goodcondition. Ifworn
or damaged, replace immediately.

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Rotation speed ... rpm (American Measure) is also expressed in metric measure : Rotational frequency ... min-1.
Both units are equivalent, for example : Rotation speed 540 rpm equals Rotational frequency 540 min-1.
ATTACHMENT
1. Whenattachingorremovingthemachinefromthetractor,positionhydraulicliftcontrolleverinsuchawaythat
it cannot be set off accidentally.
2. Whenattachingthemachinetothe tractorhydrauliclinkage,ensurethatdiameterof thelinkpinscorresponds
to the diameter of the ball joints.
3. WARNING ! Danger of crushing and shearing can exist in the lifting zone of the tractor hydraulic linkage !
4. Donotstandbetweenthetractorandthemachinewhenoperatingtheoutercontrolleveroftheliftmechanism.
5. In transport, the machine lift mechanism should be stabilized by tractor tie rods to avoid floatation and side
shifting.
POWER TAKE-OFF
1. Use only the PTO shaft supplied with the machine or recommended by the manufacturer.
2. PTO guards must always be in place and in good condition.
3. Check for correct PTO overlap when at work and in transport.
4. Before attaching or removing the PTO shaft, disengage PTO shaft, turn off engine and remove ignition key.
5. IfaprimaryPTOshaftisequippedwithaslipclutchorafreewheel,thesemustbefittedonthemachinePTO.
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 (PTO rotational frequency) and direction of rotation are in
accordance with manufacturers recommendations.
9. Before engaging PTO, keep all people and animals clear from the machine.
10. Never engage PTO shaft when tractor engine is turned off.
11. Never surpass the PTO angle recommended by the manufacturer.

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12. WARNING!RotatingelementscancontinueturningmomentarilyafterPTOisdisengaged.Keepclearuntilall
rotating elements are at a standstill.
13. Whenremovingthemachine,placePTOshaftonthesupportsprovided.
14. Fit the safety cap on tractor PTO.
15. ReplaceanywornordamagedPTOguardsimmediately.
HYDRAULIC SYSTEM
1. Beware ! The hydraulic circuit is under pressure (maximum working pressure : 200 bars/2900 psi).
2. When fitting hydraulic motors or cylinders, ensure that connections have been made correctly, as per
manufacturer’s instructions.
3. Before connecting hoses to the tractor hydraulics, ensure that tractor and machine circuits are not under
pressure.
4. It is strongly recommended that the operator marks the hydraulic connections between tractor and machine
to avoid making a wrong connection. WARNING ! Functions could be reversed (for example : lift/lower).
5. Regularly check the hydraulic hoses ! Replace the hydraulic hoses every 5 years. Damaged or worn hoses
must immediately be replaced .
Whenreplacingthehydraulichoses,makesuretousehoseswiththespecificationsandqualityrecommended
by the manufacturer 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, there could be danger of infection.
8. Before any adjustments, maintenance or repairs are carried out, lower the machine, depressurize the circuit,
turnofftheengineandremoveignitionkey.

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TIRES
1. Beforeanyworkisperformedonthewheels,ensurethatthemachinerestsonthegroundandisperfectlystable
so that it cannot move accidentally (put wedges in place).
2. Assembly, disassembly and repair of wheels and tires must only be carried out by competent persons who
are equipped with standardized tools.
3. Check tire pressure regularly !
Respect manufacturer’s recommendations on tire pressure.
MAINTENANCE
1. Before checking for any machine malfunction and before adjusting, maintaining or repairing the machine,
disengage PTO, turn off engine and remove ignition key.
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. When replacing a working part, wear protection gloves and only use standardized tools.
5. It is forbidden to discard any oil, grease or filters. These must be given to waste disposal organisations to
protect the environment.
6. Disconnect power source before any work is done to the electric system.
7. Check safety guards regularly, particularly those that are subject to wear. Replace immediately if damaged.
8. Spare parts used must be in accordance with specifications and standards as defined by the manufacturer.
Use only genuine KUHN parts !
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
competent persons with standardized equipment.
SPECIAL SAFETY RECOMMENDATIONS
When changing the machine over from the work to the transport position or vice versa, danger of crushing and
shearing can exist.
Be especially careful and keep all persons away from vicinity of the machine when maneuvering.

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SAFETY DECALS
The following safety pictorials have been placed on your machine in the areas indicated. They
are intented for your personal safety and for the safety of the people working with you. The text
shown on them gives their precise meaning. Keep the pictorials clean. Replace them when they
are faded.
1
2

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34
5
7
6

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TECHNICAL SPECIFICATIONS
Technical specifications GA 7301
Tractorattachment Swivelhitch
Numberofrotors 2
Numberoftinearmsperrotor 10
Workingwidth 6,70-7,30m(22'-24')
Swathwidth 1,40to1,80(4'7"-6')
Transportwidth 2,50 m (8'2")
Transportheight
- with disconnected tine arms
andfoldedguards 3,17m(10'5")
- with tine arms and safety guards
in place 4,07m(13'4")
Totallength 5,40m(17'8")
Forwardspeedupto 18km/h(11mph)
Work rate per hour up to 8ha(20 ac)
Powerrequirement 37 kW (50 hp)
Driveshafts(C.V)
-Primary PTO shaft withouttorquelimiter
-Secondary PTO shafts withtorquelimiter
Totalweight 1580 kg (3476lbs)
Tyres/tyrepressure
-gyrorakes 16x6,5-8(2 bars 29 PSI)
-carryingframe 10,0/80-12(3bars43PSI)
Hydraulicoutletrequired 1 x single acting outlet
Electricconnectionrequired 1 x 7 pin plug
Special note : OntheGA7301,guardscanbefoldeddownandtinearmsdisconnectedinordertoconsiderably
reducethe height of the machinein transport.
FITTING INSTRUCTIONS
A - MACHINES SHIPPED IN CRATES
On machines shipped in crates a certain number of
parts are disassembled. To assemble these parts,
proceed as follows :
1. Assembling guide wheels
Rest box section frame (P) on 2 trestles approxi-
mately 1 meter (3'3") high and fix securely to avoid
any movement.
Then bolt right hand and left hand wheel arms (A)
onto the box section frame (P) using 10 self-locking
screws (C) (M16 x 100), 10 spacers (X) (Ø 17 x 35
x 50) and 4 self-locking nuts (M16) (photo 1), but do
not tighten.

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Next assemble cross bar (D) using 4 self-locking
screws (E) (M 12 x 30) and 4 self-locking nuts (M 12)
(photo 2).
Now tighten bolts (C) in sequence (photo 1) on the
righthandsideandthelefthandsidetoatorqueof25
daNm / 185 ft-lbs. Then torque bolts (E) (photo 2) to
12 daNm / 90 ft-lbs. Re-tighten bolts (C) after a few
hours of use.
Fit the two wheels (R) onto the hubs by means of
wheel nuts (F), tighten to a torque of 15 daNm (110
ft.lbs) (photo 3). Make sure valves (V) are facing
outwards (photo 3).
Fit the two reflector supports (G) using 4 hexagonal
bolts (H) (M 8 x 30) and 4 self-locking nuts (M 8).
(Tightening torque 3 daNm / 22 ft-lbs) (photo 2).
Assemble triangular reflectors (I) on their supports
using 4 countersunk head screws (M 5 x 25) and 4
self-locking nuts (M 5) (photo 3).
2. Head stock assembly
Connect the pivoting head stock (K) to the box
section frame (P) using vertical axle (J). Secure axle
(J) with hexagon screw (L) (M 14 x 40) and self-
locking nut (M 14) (Tighten to 14 daNm / 100ft-lbs).
Then drive in roll pins (M) (dia. 12 x 60 doubled with
7 x 60).
Lower the parking stand (N) to the vertical position
and lock into place with handle (Y) (photo 4).
Removetrestlestolettheassemblyrestonitswheels
(R) (photo 3) and parking stand (N) (photo 4).
Also assemble drive shaft cone guard (V) using 2
hexagon nuts (M 10) and 2 washers (11 x 24 x 2)
already on the machine (photo 4).
4

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3. Steering linkage system assembly
(Fig. 5)
Slide the short intermediate drag link (O) (length
1175 mm) into housings (Z) on carrying frame (P)
ensuring that the toggle is directed towards the
rear. Connect the long front drag link (Q) to trunion
(A) on the vertical axle (J) (fig. 5 and photo 9, page
13) and to the intermediate drag link (O).
Next assemble steering track rod (S) onto both
steering pivots (T) as shown in drawing 5. The
steering track rod is factory set to the theoretical
correct length. To check whether further adjustment
is required, proceed as follows :
Usea5 m/16' long straightslat(U)to position the left
handwheelparalleltothecarryingframe(P).Wedge
wheel to avoid any change of direction.
Useasecondslat(U1)tocheckthatbothwheelsare
parallel. If necessary adjust rod length to achieve
correct wheel toe.
Without altering position of the wheels or carrying
frame, rotate the head stock (K) so that it is perfectly
perpendicular to the carrying frame (P).
Now adjust length of rod (W) to match the gap (X)
betweenbothtogglesandassembleinplace.Tighten
counter nuts of rods (S) and (W) (drawing 5).
4. Assemblyof liftarmsandhydraulic
cylinders
Position the right and left lift arms (M) making sure
the rotor pivoting points are orientated towards the
rear(seefig.24,page17).Slidepins(N)intocarrying
frameand liftarmboresaddingshimwashers (diam-
eter45x55x1)ifnecessary.Securewithrollpins(O)
(dia. 10 x 65).
Mounthydrauliccylinders (Q), locks (R) andspacers
(dia. 20x25x29) on the main frame using screws (F)
(M20x220) and self-locking nuts (M20). If necessary
add plain washers (dia.20x38x3) to align locks (R)
with studs (Y) (photo 6). Make sure the bolt heads
(F) are located on the lock side and tighten self-lock-
ing nuts moderately to ensure the good functioning
of locks (R). Fix the springs (T) and connect the cyl-
inder rods to the rotor arm mounting yokes (M) with
pin (S) and 2 roll pins (V) (diameter 5 x 45) (photo
6).
Connect hydraulic hoses (U) to the hydraulic cylin-
dersandattachthemtotheirbarrelswithclampcollar
(W) (photo 6).
Slide the 3 flexible hoses (U) and (H) into eyelets (X)
fixed under the carrying frame (P) and connect to T-
union (D) (photo 7).
6

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Connect hydraulic hose (H) (photo 7) to the tractor
andactivate hydraulics to liftarms(M) until theylock
automatically into the transport position (photo 8).
Install selector plates (L) with 6 self-locking screws
(F) (M 12 x 30) and adjust rod (T) for correct length.
Length is correct when locking pin of handle (E) is
approximately in the middle of one of the elongated
holes of selector plate (L) (photo 8) when the sliding
sections of the lift arms are completely slid into the
arms.Donotforget to tighten lock nuts (I) thereafter.
Then fit guard (B) using 5 hexagon screws (C) (M 8
x100),5self-lockingnuts(M8)and10plainwashers
(diameter9x22x1.5)(placeonewasherundereach
screwandtheotherundereachnut).Makesurethat
hoses (U) run through the cut-outs (V) provided in
guard (B) (photo 8A).
Nowreleasehydraulicpressuretolowerliftarms(M)
(photo 6).
NOTE : Before fitting guard (B) (photo 8A), do not
forget to set up the electric harness of light
and signal plates (see page 15).
5. Fixation of control cords
(photos 9 & 9A)
Pull one end of the 4500 mm (15') long cords (I)
through the eyelets (O), the rear side of lock holes
(R) and tie a knot at their front (photo 9).
Thread the other end of cords (I) through eyelet (6)
(photos 9 & 9 A).
Slightlytension cords sothattheywillnot be trapped
by revolving rotor arms. Fix on a plastic washer and
tie a knot in front of eyelets (G) (viewed in forward
direction) (photos 9 & 9 A).
Nowthread the freeendsofthecords(I)throughthe
wooden handle (K) (photo 9 A) and tie knots at the
desiredlengthsothatlockscaneasilybemaneuvered
from the tractor cab. Cut off surplus cord.
9
8
8A

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6. Assemblyofrotors,casterwheelsand
secondary PTO shafts
Assemblebothrightandleft-handrotorstopivotingpins
(L) of lift arms (M) so that the undercarriages (N) are
locatedinfrontoftherotor’sverticalaxles(H)(seeninthe
forwarddirection)(seefigure24).Securetherotorswith
retainingrings(T)(dia.45x2.5)(photo10). Donotforget
to install thrust washers (Y) (dia. 45 x 55 x 3) between
retainingrings(T)andplate(X)(photo10).
Connectflexiblehose(H)(photo7)tothetractorhydraulic
outlet and slightly raise the rotors off the ground.
Slide the cylindrical hub protectors (01) onto axles (N)
untiltheyseatontheaxles'shoulders(fig.11).Thenslide
the conical grey protectors (02) onto the axles with the
conical side facing the wheel bearing locations (fig.
11).The grey protecting plugs are seated tightly on the
spindle’sshoulders.Drivetheminplaceusingadriverand
apply a blow with a hammer. Fill wheel caps (Q) with
grease. Also grease the space between both bearings
located inside the rims.
Installthe4wheels(L)onaxles(N).Insertconicalspring
washer (O) (convex side against nut) and fit low self
lockingnut (P)(M16x1.5).Tighten to 12daNm/88ft.lbs.
Fit wheel caps (Q) in place (figure 11).
Note : GA 7301 USA are equipped as standard with
bogie axles. To install them, refer to page 27.
Mount cone guard (R) on the rotor side, using clamp
collarsandconeguards(R1)onthebevelgearboxside
using 2 hexagon screws (M 8 x 16) and 2 flat washers
(diameter 9 x 22 x 1,5) (photo 12).
Mountsecondary PTOshafts (S) positioningthe torque
limiter on the rotor side and the CV joint on the bevel
gearbox side. Before connecting the PTO shafts, it is
necessarytopositiontherotorssothattinearmsoperate
symetrically in relation to one another. Connect safety
chains (U and U1) as shown on photo 12.
7. Assembly of reflector boards
Mounttheleftandtherightreflectorsupports(A)onboth
sides of the frame (P) using 4 hexagon screws (C)
(M12x70),4flatwashers(diameter13x35x5)and4self-
lockingnuts(M12)(Torque10daNm/75ft-lbs)(photo13),
insuchawaythatthesideguards(H)canbefoldedback
intransport position (see photo 43on page 25).
Fixreflectorboards(D)ontosupports(A)using6hexagon
screws(H)(M10x25)and6selflockingnuts(photo13).
Stick the 2 white reflectors (V) on the lower outside
cornersofthefrontreflectorboards(D)(seephoto15).
Fitrearreflectorboardholders(A')towheellegs(S)with
4hexagonbolts(C’)(M12x70),4flatwashers(diameter
13 x 35 x 5) and 4 self-locking nuts (M12). Tighten to 10
daN.m/75ft.lbs(photo14).
Nowassemblerearreflectorboards(D’)totheplates(B)
and to their holders (A’) with 4 hexagonal bolts (F)
(M10x25), 8hexagonalbolts(E)(M10x60)and12self-
locking nuts (M 10) as shown in photo 14.
11
13

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8. Fitting warning lights
Fit front lights (K) to signal plates (D) (photo 15).
Fitrearleftlightontotherearleftsignalplate.Theleftrearlightcanberecognizedbyaninscription"L"andawhite
mark on the connector.
Fitrear right light(I) marked “R”onto the rearright signal plate(D’) (photo 14).
Before fitting guard (L) (see page 13), thread the electric harness inside guard (L) through eylets (X) (photo 7).
Thenthreadcables(M)forthefrontlightthroughflexiblerings(N)andattachthemtothefrontsignalplateholders
(A) with 4 clamp collars (O) (length 350 mm/14") (photo 13).
Now route cables (D) for the rear lights of guard (L) and attach them to frame (P) and to wheel arms (Q) with 2
clamp collars (R) (length 508 mm/20") and 6 clamp collars (T) (length 350 mm/14") (photos 16 and 17).
Note : Harness connectors are identified as follows :
- Connector for rear left light has an inscription "L" and a white mark (in grey on figure 18).
- Connector for rear right light is marked “R”.
Tocomplete thejob, plug the harness connectors to thecorresponding front and rear lights.The locking tab (1)
of the female connector (2) must be fully engaged over the peg (3) of the male connector (4) (fig.18).
Attach front end of electrical harness to hydraulic hose with 3 clamp collars (S) (length 176 mm/7") (photo 19).
14 15
19
18
16 17

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9. Safety guard assembly
Attach hinges (W) to supports (X) using 4 hexagon
screws (I) (M12 x 35) and 4 self-locking nuts (M12)
(Torque = 10 daN.m/75 ft.lbs) (photo 20).
Mount folding guards (Z) to hinges (W) with roll pins
(O) (dia. 8 x 55) (photo 20) and (O') (dia. 8 x 55)
(photo21). Donotforgettoinsertspacerwasher(R)
(dia.40x51x7)betweenrollpins(O)andhinges(W)
(photo 20).
When mounting the foldable guards
(Z), make sure the lock rods (T) are
locatedunderneath thesafety guard
when in working position (photo
21).
Install the 4 clips (C) on side beams (W) by means
of 4 hexagonal screws (M 8 x 55) and 4 self-locking
nuts (M 8) using the handles (K) as templates.
Then mount inner safety guards (D) to hinges (W)
using 2 hexagon screws (E) (M 10 x 60). Do not
forget to insert conical spring washers on both sides
of safety guard tubing (photo 21).
After assembly, make sure each
safety guard locking system works
correctly.
10. Fitting tine arms and tines
First fit tine arms (E) to supports (S) and secure
using linch pins (U) (fig. 22).
Connectthesmallhookofsafetystrap(X)tolinchpin
(U), then connect the large safety strap hook to the
hole (A) of bracket (W) on tine arm (E) (fig. 22).
Next fit the supports (S) with tine arms on the
oscillating shafts (L) using roll pins (V) (dia.12 x 55
and 7 x 55) (fig. 22A).
Therightandleft-handrotorarmsaresymetrically
curved to one another. Ensure they are posi-
tioned so that the curved portion is facing the
front as seen in the direction of rotation (see
arrows figure 23) and the flattened side of the
tine arms must always be positioned on the top
side.
ATTENTION : Make sure slots of roll pins are ori-
entatedoppositetooneanotherand
in the direction of main effort (see
drawing on figure 23).
Clean and apply regularly a «Never-
Seize» compound to the detachable
tine arm ends (E) (fig. 22) (see also
page 26). 22A
22

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The tines (A) must be attached underneath the tine
arms (E) so that their fingers are slanting away from
the direction of rotation (see arrow).
Thetines aresecuredtothearms by usingthescrew
(B) (M12 x 75), the self-locking nut (G) (M12), the
washer(C) (diameter 13 x 35x 5), thespring washer
(F) and the tine bracket (D).
Make sure that the parts are assembled correctly as
shown in figure 24.
11. Rotor horizontality (photo 25)
Once the tine arms and tines have been installed on
the rotors, proceed as follows to adjust rotor
horizontality :
- Lift the machine’s headstock until the main frame
is horizontal, or attach machine to a tractor and lift
the draft arms until the hitch pins are at a distance
of 600 mm / 2’ above ground level (see page 20)
- Placethemachineonaflatsurfacewiththe2rotors
lowered on the ground. Adjust wheel height of the
left and right rotors to level them sideways.
- Check that the rotors are level in the direction of
travel. If they are not level, proceed as follows:
- Slightly loosen the 4 mounting screws (M) of the
first rotor.
- Level the rotor in direction of travel by rotating
eccentric (P) using a 36mm wrench (Q) or an
adjustablewrench. Tighten the 4 mountingscrews
(M) and torque them to 14 daN.m / 103ft.lbs
- Proceedin the samewayto level thesecond rotor.
24
25

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12. Assembling of central swath
screen
Mountswathscreensupport(D)tothecentralgearbox
(E)with4hexagonbolts(M12x25)and2plateswhich
must be installed under the bolt heads (photo 26).
Connectcrank (F) to crossbar(H)using support (G),
2hexagonbolts(I)(M12x18)and2self-lockingnuts
(M 12). Make sure the end portion of the crank with
drivepin(J)ishousedbythescreentubeasshownin
photo26.
Assemblethe SMVmounting bracket (S) on support
(G)with2self-lockingscrews(T)(M8x12)and2self-
locking nuts (M 8) (photo 26).
B. MACHINES SHIPPED “PREASSEMBLED”
TheunloadingoperationofaGA7301thathasbeenshippedina“preassembled”formrequiresaliftmechanism
(crane, hoist etc.) with a minimum capacity of 2 tons.
Connect lifting hooks (K) to the 4 anchorage points (L) located on the main carrying frame (M) and to the
hydraulic cylinder mounting yokes (N) (photos A and B).
The 4 anchorage points (L) are indicated by the opposite decal.
Keep all persons away from the danger zone whilst unloading the machine.
26