Jacobsen AR-522 jossa ROPS User manual

WARNING:If incorrectly used, this machine can cause severe injury. Those who
use and maintain this machine should be trained in its proper use, warned of its
dangers and should read the entire manual before attempting to set up, operate,
adjust or service the machine.
Dealer’s Manual
Återförsäljarens handbok
When Performance Matters.
™
GB SE
Swedish
VARNING
Om denna maskin används på fel sätt kan den orsaka svåra personskador.
De som använder och underhåller denna maskin ska utbildas i hur den
används korrekt, vara varnade för de förekommande riskerna och ska alltid
läsa hela handboken innan någon form av arbete utförs på eller med maskinen.
WARNING
If incorrectly used, this machine can cause severe injury. Those who use
and maintain this machine should be trained in its proper use, warned of its
dangers and should read the entire manual before attempting to set up,
operate, adjust or service the machine
AR-522™
68098–AR-522,Kubota®V2403-MT,
4WD,withROPS
68098–AR-522,Kubota®V2403-MT,
4WDmedROPS
4179486-Rev.A-SE
Återförsäljare
Denna handbok är framställd för att hjälpa
återförsäljares personal med korrekt
uppsättning och förberedande av
utrustningen innan den levereras till kunden.
Du kan finna det önskvärt att spara ett
exemplar av den i din kundfil.
Avlägsna inte handböckerna för säkerhet
& drift eller underhåll & reservdelar från
traktorn.
Se dina kontorskopior av:
• Handbok för säkerhet & drift
• Handbok för underhåll & reservdelar
för sådan information som inte är inkluderad i
denna handbok.
Använd den kontrollista före leverans som
finns inkluderad på denna handboks
baksida. Du kan finna det önskvärt att ge
kunden en avbockad kopia av denna lista vid
leverans av enheten.

CONTENTS
en-2
Proposition 65 Warning
Engine exhaust from this product
contains chemicals known to the State of
California to cause cancer, birth defects,
andotherreproductiveharm
©COPYRIGHT2009,Jacobsen,ATextronComapny.
“Allrightsreserved,includingtherighttoreproducethisbook orportionsthereofinanyform”.
All information in this publicationis based on information available at time of approval for printing. Jacobsen reserves the right to
makechangesatanytimewithoutnoticeandwithoutincurringanyobligation.
This manual contains safety, controls and operating
instructions for your new Jacobsen machine. This manual
should be stored with the equipment for reference during
operation.
Before you operate your machine, you and each operator
you employ should read the manual carefully in its entirety.
By following the safety, operating and maintenance
instructions, you will prolong the life of your equipment and
maintainitsmaximumefficiency.
If additional information is needed, contact your Jacobsen
Dealer.
The serial plate is located on the right rear frame rail.
Jacobsen recommends you record these numbers below
foreasyreference.
®
P.O. BOX 7708,
CHARLOTTE,
NC 28241, USA
kg kg kg kW
Jacobsen.com
1-800-848-1636 (US)
FOREWORD
Contents
CONTENTS
1SAFETY
1.1 OperatingSafety ........................... .... 3
1.2 ImportantSafetyNotes ......... ............... 4
2 CONTROLS
2.1 Icons ...... ................................ ..... 5
2.2 Controls ...... .. .. ...... .. ...... ...... .......... 6
2.3 ControlPanel ................................ .. 8
2.4 OperatorAlerts .......... ...................... 9
3 SET-UP
3.1 General ............................. .......... 10
3.2 InitialInspection.............................. . 10
3.3 OperatingChecks ........ ... ................. 11
3.4 InterlockSystem ..................... ......... 11
4ADJUSTMENTS
4.1 General .......... ....................... ... ...12
4.2 MowSpeed .. ... .. .. .... .... .... .... .... .... ...12
4.3 Belt ................ ... .........................12
4.4 Brakes ........... .................... ... ......13
4.5 NeutralAdjustment............................13
4.6 Forward/ReverseSpeed ............ .........14
4.7 SteeringToe-In ....................... ... ......14
4.8 CuttingHeight ............................. ....15
4.9 TractionControlSystemCalibration ......... .16
4.10 TorqueSpecification ..........................17
5 TROUBLESHOOTING
5.1 General .......... ....................... ... ...18
5.2 ControllerLamps ..............................19
5.3 ElectricalCircuits ...... ... ....................20
6 LUBRICATION
6.1 LubricationChart .............................21
7NOTES
LithoinU.S.A.4-2009
2006/42/ECThesearetheOriginalinstructionsverifiedbyJacobsenATextroncompany.

SAFETY 1
en-3
1 Safety
1.1 OPERATING SAFETY ______________________________________________________
1. Safety is dependent upon the awareness, concern, and
prudence of those who operate or service the
equipment. Never allow minors to operate any
equipment.
2. It is your responsibility to read this manual and all
publications associated with this equipment (Safety &
Operation Manual, Parts & Maintenance Manual,
Engine Manual, and attachments/accessories
instructionsheets).If the operatorcannot readEnglishit
is the owner’s responsibility to explain the material
containedinthismanualtothem.
3. Learn the proper use of the machine, the location and
purpose of all the controls and gauges before you operate
the equipment. Working with unfamiliar equipment can
leadtoaccidents.
4. Neverallow anyoneto operateorservicethemachine orits
attachments without proper training and instructions, or
whileundertheinfluenceofalcoholordrugs.
5. Wear all the necessary protective clothing and personal
safetydevices toprotect your head,eyes, ears, hands,and
feet. Operate the machine only in daylight or in good
artificiallight.
6. Evaluate the terrain to determine what accessories and
attachmentsare needed to properlyandsafely perform the
job. Only use accessories and attachments approved by
Jacobsen.
7. Stayalertforholesintheterrainandotherhiddenhazards.
8. Inspect the area where the equipment will be used. Pick up
all the debris you can find before operating. Beware of
overhead obstructions (low tree limbs, electrical wires,
etc.) and also underground obstacles (sprinklers, pipes,
tree roots, etc.). Enter a new area cautiously. Stay alert for
hiddenhazards.
9. Never direct discharge of material toward bystanders, nor
allow anyone near the machine while in operation. The
owner/operator can prevent and is responsible for injuries
inflicted to themselves, to bystanders, and damage to
property.
10. Do not carry passengers. Keep bystanders andpets a safe
distanceaway.
11. Never operate equipment that is not in perfect working
order or is without decals, guards, shields, discharge
deflectors, or other protective devices securely fastened in
place.
12. Neverdisconnectorbypassanyswitch.
13. Do not change the engine governor setting or overspeed
theengine.
14. Carbon monoxide in the exhaust fumes can be fatal when
inhaled. Never operate the engine without proper
ventilationorinanenclosedarea.
15. Fuelishighlyflammable,handlewithcare.
16. Keep the engine clean. Allow the engine to cool before
storingandalwaysremovetheignitionkey.
17. Disengage all drives and engage parking brake before
starting the engine (motor). Start the engine only when
sitting in operator’s seat, never while standing beside the
unit.
18. Equipment must comply with the latest federal, state, and
local requirements when driven or transported on public
roads. Watch out for traffic when crossing or operating on
ornearroads.
19. Localregulationsmayrestricttheageoftheoperator.
20. Operate the machine up and down the face of slopes
(vertically),notacrosstheface(horizontally).
21. To prevent tipping or loss of control, do not start or stop
suddenly on slopes. Reduce speed when making sharp
turns.Usecautionwhenchangingdirections.
22. Alwaysuse theseatbelt whenoperating mowersequipped
withaRollOverProtectiveStructure(ROPS).
Never use a seat belt when operating mowers
without a ROPS.
Accessory operator protective structures will continue
to be offered for all equipment currently covered. This
allows for the outfitting of any machines without
previous ROPS installations or replacement of
damagedstructures.
23. Keeplegs, arms,andbody inside theseatingcompartment
whilethevehicleisinmotion.
24. Disconnect battery and controller electrical connectors
beforeperforminganyweldingonthismower.
This machine is to be operated and maintained as specified in this manual and is intended for the professional
maintenance of specialized turf grasses. It is not intended for use on rough terrain or long grasses.
WARNING
EQUIPMENT OPERATED IMPROPERLY OR BY UNTRAINED PERSONNEL CAN BE DANGEROUS.
Familiarizeyourselfwiththelocationandproperuseofallcontrols.Inexperiencedoperatorsshouldreceiveinstructionfrom
someonefamiliarwiththeequipmentbeforebeingallowedtooperatethemachine.
!

1 SAFETY
en-4
1.2 IMPORTANT SAFETY NOTES________________________________________________
This safety alert symbol is used to alert you to potential hazards.
DANGER-Indicatesanimminentlyhazardoussituationwhich, ifnotavoided,WILL resultindeathorseriousinjury.
WARNING-Indicatesapotentiallyhazardoussituationwhich,ifnotavoided,COULDresultindeathorseriousinjury.
CAUTION - Indicates a potentially hazardous situation which, if not avoided, MAY result in minor or moderate injury and
propertydamage.Itmayalsobeusedtoalertagainstunsafepractices.
NOTICE- Indicates a potentially hazardous situation which, if not avoided, MAY result in property damage. It may also be
usedtoalertagainstunsafepractices.
For pictorial clarity, some illustrations in this manual may show shields, guards, or plates, open or removed. Under no
circumstances should this equipment be operated without these devices securely fastened in place.
By following all instructions in this manual, you will prolong the life of your machine and maintain its maximum efficiency.
Adjustmentsandmaintenanceshould alwaysbeperformedbyaqualifiedtechnician.
If additional information or service is needed, contact your Authorized Jacobsen Dealer who is kept informed of the latest
methodstoservicethisequipmentandcanprovidepromptandefficientservice.Use of other than original or authorized
Jacobsen parts and accessories will void the warranty.
WARNING
TheInterlockSystemon thismowerpreventsthemowerfromstartingunlessthe
brake lever is engaged, PTO switch is off and traction pedal is in Neutral. The
system will stop the engine if the operator leaves the seat without engaging the
parkingbrakeorsettingthePTOswitchoff.
NEVERoperatemowerunlessthe InterlockSystemisworking.
!
WARNING
1. Beforeleavingtheoperator’spositionforanyreason:
a. ReturntractionpedaltoNeutral.
b. Disengagealldrives.
c. Lowerallimplementstotheground.
d. Engageparkingbrake.
e. Stopengineandremovetheignitionkey.
2. Keep hands, feet, and clothing away from moving parts. Wait for all
movementtostopbeforeyouclean,adjust,orservicethemachine.
3. Keeptheareaofoperationclearofallbystandersandpets.
4. Nevercarrypassengers,unlessaseatisprovidedforthem.
5. Never operate mowing equipment without the discharge deflector securely
fastenedinplace.
!

CONTROLS 2
en-5
2 CONTROLS
2.1 ICONS ___________________________________________________________________
WARNING
Never attempt to drive the mower unless you have read the Safety & Operation Manual and
knowhowtooperateallcontrolscorrectly.
Familiarize yourself with the icons shown above and what they represent. Learn the location
andpurposeofallthecontrolsandgaugesbeforeoperatingthismower.
Read Manual
High Low
Engine Throttle
PTO
Lock Unlock
Forward Reverse
Travel
Cruise Control
Off Run
Engine
Start
Parking Brake
ON OFF
Coolant
Temperature
Fuel
Mowers
Lower Raise
Work Lights
Hour Meter
Oil Level Switch
On Off/Test
EngineOil
Pressure
Glow
Plug
Hydraulic
OilFilter
Battery
Charge
Warning Lights
HydraulicOil
Level
D
!

2 CONTROLS
en-6
2.2 CONTROLS ______________________________________________________________
TC-O/I
77
93
110
° C
170
200 230
° F
TotalHours
1
10
0 0 0 0 0
A
E
M
Q
U
Y
B1
B2F
J
N
S
V
C
G
K
O
R
W
D
H
L
P
T
X
ATiltSteeringLever
B1 ParkingBrakeLock
B2 ParkingBrakeRelease
CParkingBrake
DMowSpeedStop
ETractionPedal-Forward
FTractionPedal-Reverse
GSeatAdjustment
HHydraulicOilCap/Dipstick
JAirCleanerIndicator
KFuelCap
LAlarm
MController/Fuses
NHyd.OilLevelLight
OHyd.OilLevelSwitch
PMowerLiftLever
QPTOSwitch
RLightSwitch
STractionControl
TEngineThrottle
UIgnitionSwitch
VHourMeter
WFuelGauge
XWarningLights
YEngineCoolantTemperature

CONTROLS 2
en-7
A. Tilt Steering Lever
Pull lever up to release steering column. Tilt
column up or down to position desired. Release
levertolocksteeringcolumninplace.
B. Parking Brake Lock/Release
To lock parking brake, hold brake pedal (C) down and
presslock (B1)untilitengages.Todisengage,pressbrake
pedalrelease(B2).
Figure 2A
C. Parking Brake
Toengageparkingbrakepresspedaldown.
D. Mow Speed Stop
Limits forward speed while mowing. To operate at lower
travel speed while mowing, rotate lever so it contacts stop
screw (D1)on floor board when forward travel pedal is
pressed. To travel at full speed,set lever in position shown
(D3). Stop screw (D2)can be adjusted to set specific mow
speeds.SeeParts & Maintenance Manual.
E. Traction Pedal - Forward
Pressfrontofpedaldownforforwardtravel.Releasepedal
toslowmowerandstop.
F. Traction Pedal - Reverse
Press rear of pedal downfor reverse travel. Release pedal
to slow mower and stop. Allow mower to come to a
completestopbeforereversingdirections.
Figure 2B
G. Seat Adjustment
Pull left side lever out to adjust seat forward or backward.
To adjust spring tension under seat turn adjusting knob on
frontofseat.
H. Hydraulic Oil Cap/Dipstick
Fill to mark on dipstick using clean hydraulic fluid while
machineiscool.Donotoverfill.
J. Air Cleaner Indicator
Indicates condition of air cleaner on engine. Clean or
replace air filter when red band appears in clear window of
indicator.SeeParts & Maintenance Manual.
K. Fuel Cap
Fillfueltank withNo.2 dieselfuel, minimumCetaneRating
of45.SeeSection5.11.
L. Alarm
The alarm, along with the warning lights (N, Y), sounds to
alert the operator to conditions requiring immediate
attention.SeeSection2.4.
M. Controller / Fuses
The controller is located under the rear hood directly
behind the operator’s seat. It is equipped with lights to aid
in monitoring and troubleshooting the electrical system of
themower.SeeParts & Maintenance Manual.
Two spade type fuses are located on the controller. To
replacefusesremovetheaccesspanel.
CAUTION
Never adjust steering while mower is moving. Stop unit
andsetparkingbrakebeforeadjusting.
NOTICE
Theengine willautomaticallyshut down ifthe traction pedal
is held down for more than 10 seconds with the parking
brakeengaged.
!
B1
B2
C
CAUTION
Service to the electrical system must be performed by a
trained technician. Before replacing fuses turn mower off
andremovekeyfromignition.
D3
Transport Speed Mow Speed
D1
D2
LF002
E
F
!

2 CONTROLS
en-8
2.3 CONTROL PANEL _________________________________________________________
N. Hydraulic Oil Level Light
Alerts the operator of a low fluid level in hydraulic
tank. This light operates in combination with the
alarm.SeeSection2.4.
O. Hydraulic Oil Level / Horn Switch
This switch is used to test the alarm system
or disable the alarm after a low oil level has
been detected. Keep switch in its ON
positionwhenstartingandoperatingmower.
To test alarm, set switch to OFF and turn
ignitionkeytoRUN.See Section 2.4.
P. Mower Lift lever
The mower lift lever raises and lowers the
mowers and operates in either automatic
or manual mode. Push lever forward to
lowermowers,pullbacktoraisemowers.
Manual Mode -Set mow switch (Q) in its OFF (down)
position. In this position all mowers will raise or lower while
pressureisappliedtotheliftlever.
Automatic Mode - Set mow switch (Q) in its ON (up)
position. In automatic mode the mowers will lower and
start automatically with a momentary forward movement
of the lift lever. In this mode mowers will only raise to a
“crosscut” position with a momentary backward
movementoftheliftlever.
To raise mowers to their transport position, hold lever until
mowersarefullyraised.
Q. PTO Switch
The PTO switch is a 2-position knob type switch
usedtoengageanddisengagethemowers.It also
setsthemowerliftlever(P) inmanualorautomatic
mode. Set PTO switch in its disengaged (down)
positionwhenstartingthemower.
R.Light Switch
Controls operation of work lights. Press front of
switch to turn lights on. Press rear portion of switch
toturnlightsoff.
S. Traction Control
Pressing switch enables controller traction control
system. This system reduces down pressure on
decks by pulsing the lift circuit, transferring weight
to mower. Reducing down pressure improves
traction, but may cause decks to float up creating
anunevencut.
To increase down pressure on decks, let goof switch. This
reducestraction,butimprovesdeckcontactwithground.
T. Engine Throttle
Controls engine speed. Run machine at full throttle during
normalmachineoperation.
U. Ignition Switch
The ignition switch has four positions. OFF-
RUN (ON) - GLOW PLUG - START. In the
RUN position the controller program is
runningandinputandoutputcircuitsarebeing
monitored. The GLOW PLUG position has no
function for this mower. See Section 5.4 and
Parts & Maintenance Manual.
V. Hour Meter
Records engine operating hours. Use
the hour meter to schedule periodic
maintenance.
W. Fuel Gauge
Indicates current fuel level. Check fuel
gaugedailybeforestartingmachine.
X. Warning Lights
Alerts the operator to conditions requiring
immediateaction.See Section 2.4.
Y.Engine Coolant Temperature
Gauge
Indicates engine coolant temperature.
Normal operating temperature should be
between 160° - 230°F (71°-110°C). If
temperature rises above 230° (110°F),
alarm will sound for 5 seconds, then beep
once every three seconds. See Section
2.4.
NOTICE
The warning light will remain on as long as a low oil level is
detected. If the alarm sounds due to low oil level, it can be
disabledbyturningswitch(O)toOFF.
NOTICE
While in an Automatic Mode lift or lower cycle, which lasts
approximately 3 seconds, moving the lift lever in the
oppositedirectionwillturnallmowersoff,andmanualmode
willstartforthepositionselected.
TC-O/I
Total Hours
1
10
0 0 0 0 0
77
93
110
° C
170
200 230
° F

CONTROLS 2
en-9
2.4 OPERATOR ALERTS _______________________________________________________
The electronic controller monitors vital machine systems. It
usesanaudiblealarmandwarninglightstoalerttheoperatorof
conditions requiring immediate action. When an alert occurs
follow the general guidelines listed in the chart below, and any
specific actions outlined by the grounds superintendent or
servicemanager.
To test alarm system:
Turn ignition switch to RUN. All lights will come on for one
second or more and the alarm will sound for 5 seconds, then
beeponceeverythreesecondsuntiltheengineisstarted.
Thissystemmonitors:
1. Hydraulicfluidlevel.
2. Engineoilpressure.
3. Enginecoolanttemperature.
4. Hydraulicoilfilter.
5. Batteryvoltage.
6. Dualactivationofbrakeandtractionpedal.
Figure 2C
2
3
1
4
5
LF004
Alert Action
1. Hydraulic fluid level - alarm
sounds for 5 seconds, then beeps
once every three seconds and
hydraulic fluid warning light comes
on. Hydraulic fluid is below
recommendedlevel.
Stop mower immediately, lower implements and shut off engine! Visually
inspect mower for obvious signs of leaks around connections, hoses and hydraulic
components.Returnmowertoserviceareaformaintenance.
CAUTION: Hydraulic fluid is under pressure. Turn engine off and allow fluid
tocoolbeforecheckingfluidleveloraddingoiltohydraulictank.
2. Engine Oil Pressure - alarm
sounds for 5 seconds, then beeps
once every three seconds and oil
pressure light comes ON. Oil
pressurelow.
Stop mower immediately, lower implements and shut off engine! Inspect oil
levelinengine.IfoillightremainsONwithoilatproperlevel,shutoffengineandtowor
trailermowerback toa servicearea.NEVERoperateenginewithoillightON. Severe
damagetotheenginecanoccur.
3. Engine Coolant Temperature
Alarm sounds for 5 seconds, then
beeps once every three seconds.
Enginecoolanttemperaturehigh.
Stop mower immediately, lower implements and shut off engine! Remove
debrissuchas leavesand grassclippingsthatmaybe restrictingairflow throughrear
screen on hood and area between radiator and oil cooler. If engine continues to run
hot,returnmowertoaservicearea.
CAUTION: Engine coolant is under pressure. Turn engine off and allow fluid
tocoolbeforecheckingfluidleveloraddingcoolanttoradiator.
4. Hydraulic oil filter - Oil filter
warning light remains on after
starting or alarm sounds for 5
seconds, then beeps once every
threesecondsandlightcomeson.
Return mower to a service area as soon as possible. Change hydraulic oil
filters.
5. Battery Voltage - Warning light
comeson. Return mower to a service area as soon as possible.Inspect battery and
batterychargingsystem.
6. Driving with brake on - Alarm
Sounds Disengage parking brake, or remove foot pressure from either pedal.
Continued operation with both brakeand traction pedal depressed will cause engine
tostopin10-60seconds,dependingontheorderofpedalapplication.

3 SET-UP
en-10
3 Set-up
3.1 GENERAL________________________________________________________________
The set-up and testing of the unit should always be
performed by a trained technician, familiar with the
operationofthisequipment.
Read each instruction completely and make sure you
understand it before proceeding with the assembly. Stay
alertforpotentialhazardsandobeyallsafetyprecautions.
The RIGHT and LEFT, FRONT and REAR of the machine
arereferencedfromtheoperator’sseat,facingforward.
Accessories not included with this product must be ordered
separately. See instructions provided with accessory for
installationandparts.
3.2 INITIAL INSPECTION_____________________________________________________________
1. Perform a visual inspection of the entire unit, look for
signs of wear, loose hardware, and components that
mayhavebeendamagedduringtransport.
2. Inspect paint and decals for damage or scratches.
Decals provide important operaing and safety
information.Replaceallmissingorhardtoreaddecals.
3. All fluids must be at the full level mark with engine cold.
Check:
a. Radiatorcoolantlevel.
b. Engine oil level.
c. Hydraulicfluidlevel.
4. Make sure air filter connections are tight and cover is
securelyinplace.
5. Check tires for proper inflation. Tires have been over
inflated for transport. Correct tire pressure should be
setto:
Front ......................... 16psi(111kPa)
Rear.......................... 12psi(86 kPa)
6. Check belttension.
[Section 4.3]
7. Inspect battery connections and electrolyte level.
Checkthatbatteryisfullycharged.
8. Checkforfueloroilleaks.
9. Inspect lube points on decks and mower for proper
lubrication.
[Section 6.1]
CAUTION
Donotattempt todrive themowerunlessyouarefamiliar
with this type of equipment and know how to operate all
controlscorrectly.
!
CAUTION
Theinitialinspection shouldbeperformed only whentheengine is offandall fluidsarecold. Lowermowerstotheground,
engagetheparkingbrake,Stopengineandremoveignitionkey.
!

SET-UP 3
en-11
3.3 OPERATING CHECKS ______________________________________________________
After the initial inspection and installation of reels and
accessories test the mower and implements for proper
operation.
1. TesttheInterlockSystem.
[Section 3.4 ].
2. Start mower and check that switches, pedals and
controlsoperateasdescribed.
[Section 2.2 and 2.3]
3. Checkthatwarninglightsandalarmareworking.
4. Check that brake pedal does not have more than one
inch free travel before engaging brake disc. [Section
4.4]
5. Operate traction pedal and check that mower operates
smoothly in both directions. Check that mower stops
when traction pedal is released. If necessary, adjust
forwardandrevesespeeds.
[Section 4.6]
6. Check that mower does not drift with engine running
andtractionpedalinNeutral.
[Section 4.5]
7. Checkadjustmentofmowspeedstop.
[Section 4.2]
8. Checkoperationofdecklift lever.
[Section 2.3]
9. CheckoperationofPTOswitch.
[Section 2.3]
10. After operation, stop mower and inspect again for oil or
hydraulicleaks.
3.4 INTERLOCK SYSTEM ______________________________________________________
1. The interlock system prevents the engine from starting
unless the parking brake is engaged, the traction pedal is
in neutral and the mower switch is OFF. The system also
stops the engine if the operator leaves the seat with the
mower switch ON, traction pedal out of Neutral, or parking
brakeDisengaged.
2. Perform each of the following tests to insure the interlock
system is functioning properly. Stop the test and have the
system inspected and repaired if any of the tests fail as
listedbelow:ltheenginedoes not startintest1;
ltheenginedoes startduringtests2,3,or4;
ltheenginecontinues torunduringtests5or6.
3. Refer to the chart below for each test and follow the check
() marks across the chart. Shut engine off between each
test.
Test 1: Represents normal starting procedure. The
operator is seated, parking brake is engaged, the
operator’s feet are off the pedals, and the mower
switch(es)is‘OFF”.Theengineshouldstart.
Test 2: The engine must not start if the mower switch is
“ON”.
Test 3: The engine must not start if the parking brake is
“DISENGAGED”.
Test 4: The engine must not start if the traction pedal is
pressed.
Test 5: Start the engine in the normal manner then turn
mowerswitch“ON”andliftyourweightofftheseat.+
Test 6: Start the engine in the normal manner then
disengageparkingbrakeandliftyourweightofftheseat.+
+Liftyourweightoffseat.Thecuttingunitsmuststoprotatingwithinseven(7)seconds.
WARNING
Never operate equipment with the Interlock System
disconnected or malfunctioning. Do not disconnect or
bypassanyswitch.
!
Test Operator
Seated
Parking
Brake
Traction Pedal
in Neutral
Mower
Switch
Engine
Starts
Yes No On Off Yes No On Off Yes No
1 
2 
3
4 
5++
6+  +

4 ADJUSTMENTS
en-12
4 ADJUSTMENTS
4.1 GENERAL________________________________________________________________
1. Adjustments and maintenance should always be
performed by a qualified technician. If proper adjustment
cannotbemade,contactanauthorizedJacobsenDealer.
2. Replace,donotadjust,wornordamagedcomponents.
3. Do not wear jewelry or loose fitting clothing when making
adjustmentsorrepairs.
4. Donotchangegovernorsettingsoroverspeedtheengine.
4.2 MOW SPEED _____________________________________________________________
Cutting quality is better at speeds well below the transport
speedofthemower.Aninitialmowspeedoffivetosixmphisset
at the factory and should be satisfactory for most cutting
conditions. Local turf conditions, however, mayrespond better
toadifferentspeed.
Tosetmowspeed,loosenjamnut(A) andadjust stopscrewup
to reduce speed, down to increase speed. Tighten nut to hold
adjustmentinplace.
Figure 4A
4.3 BELT ____________________________________________________________________
Inspect and adjust new belt after first ten hours of operation.
Adjustevery100hoursthereafter.
Adjust alternator pulley so belt deflects 1/4 to 5/16 in. (6 -8 mm)
with a 20 lb. push at midpoint between pulleys. See engine
manual.
If tension is incorrect, loosen alternator mounting bolts (B) and
adjustalternatoruntilproperbelttensionisachieved.
Figure 4B
WARNING
To prevent injury, lower implements to the ground,
disengage all drives, engage parking brake, stop engine
and remove key from ignition switch before making any
adjustmentsorperformingmaintenance.
Makesure themoweris parkedona solidandlevel surface.
Never work on a mower that is supported only by the jack.
Alwaysusejackstands.
Ifonlythefrontorrearofthemowerisraised,placechocksin
frontofandbehindthewheelsthatarenotraised.
!
CAUTION
Becarefultoprevententrapmentofthehandsand
fingersbetweenmovingandfixedcomponentsofthe
machine.
!
A
LF002
1/4”TO 5/16”
(6TO 8MM)
B
LF012

ADJUSTMENTS 4
en-13
4.4 BRAKES _________________________________________________________________
Adjust brakes after replacing or servicing brake assembly, or if
pedaltravelbecomesexcessive.
1. When installing new brake pads, burnish pads by driving
mower at mowing speed while applying a slight pressure
on brake pedal for about 5 seconds. Release and repeat
fivetimesbeforemakingthefinaladjustment.
2. Fullyloosenadjustingnut(E).
3. Disconnect brake return spring (See Item 14,
Illustration 8.1)atcaliper.
4. By hand, pull cable behind adjusting nut (C) away from
pedal until brake pads just contact brake disk. Thread
adjusting nut (C) up until it contacts the mounting plate.
Tighten nut (E) to lock adjustment in place. Torque nut (E)
to20ft.lb.(27Nm).Donotovertorqueorturncable.
5. Connectbrakereturnspring.Repeatforsecondcable.
6. If brakes wear beyond point where they can be adjusted
by the cable, move brake bracket into second set of holes
provided(D) andcompleteadjustmentprocedure.
7. Start mower and check operation of brakes. Park mower
on an incline (approx. 16.7° slope) and engage parking
brake. Brake must prevent mower from rolling. Adjust nut
(C)asrequired.
Figure 4C
4.5 NEUTRAL ADJUSTMENT ___________________________________________________
Neutraladjustmentcanonlybemadeatthedrivepump.
The Neutral adjustment is preset at the factory on all new
mowers and replacement pumps. Further adjustment is not
required unless the pump has been disassembled for repair or
service.
To adjust Neutral:
1. Disconnecttractionpedallinkagefrompump.
2. Place mower securely on jack stands so All wheels are
raisedoffground.
3. Checkthattowvalve(H)isclosed
4. Engage parking brake and set mow switch to Neutral.
Make sure Neutral switch at traction pedal is closed.
(Figure 4E - M). Distance between the sensing portion of
switch and metal pointer (M) must be between 1/16 and 1/
8in.(1.5and3mm).
5. Loosen screws (G) holding pump lever bracket just
enough so it can be moved. Start engine, disengage
parking brake, and observe wheels. Adjust bracket (F) in
slotted holes until wheels do not turn. Turn off engine and
tightenbracketinplace.
6. Connect traction linkage. When connecting linkage at
traction pedal make sure pointer on traction pedal bracket
iscenteredoverNeutralswitch(M-Figure 4E).
7. Start engine and check operation of traction pedal.
Wheels must not turn when pedal returns to Neutral and
lamp5oncontrollershouldlight,seeSection5.
Figure 4D
C
E
D
D
F
H
GLF014

4 ADJUSTMENTS
en-14
4.6 FORWARD / REVERSE SPEED ______________________________________________
Forwardandreversespeedsare adjustedat thetraction pedal.
Setforwardspeedbeforeadjustingreverse.
To adjust forward speed:
1. Make sure drive pump has been set to Neutral and engine
throttleisadjustedcorrectly.
2. Start engine and check forward travel speed with engine
at full throttle and mower in two wheel drive (2WD).
Forward transport speed should measure 10 mph (16
kph).
3. Stopengine. To adjust forwardspeed, disconnect eye bolt
(K) from pedal and loosen jam nut. Turn eye bolt in to
reduce speed, out to increase speed. Tighten jam nut to
holdadjustmentinplaceandconnecteyebolt.
4. With traction pedal in Neutral, check position of Neutral
switch (J). Adjust switch up or down so pointer (M) on
traction pedal bracket is centered over it. When adjusted
correctly lamp 5 on controller will light when ignition switch
isturnedtoon.
5. Start engine and check forward speed. Repeat procedure
until10mph(16kph)forwardtransportspeedisattained.
To adjust reverse speed:
1. Setforwardspeed.
2. Start engine and check reverse travel speed with engine
at full throttle. Reverse speed should measure 3.5 mph
(5.6kph).
3. Stop engine. To adjust reverse speed, loosen nut on
reverse travel stop bolt (L). Slide bolt forward in slotted
hole to increase speed, back to reduce speed. Tighten nut
toholdadjustmentinplace.
4. Start engine and check speed. Repeat procedure until 3.5
mph(5.6kph)reversespeedisattained.
Figure 4E
4.7 STEERING TOE-IN _________________________________________________________
1. Turnwheelstostraightaheadposition.
2. Loosenjamnuts(N)onbothsidesoftierod(M).
3. Turn tie rod (S) to provide proper toe-in. Toe-in must not
exceed+1/16in.(+1.5mm)(P).Retightenjamnuts.
4. After adjusting tie rod, adjust steering cylinder by
threadingthe rod(T) in or outofballjoint sospindle arm(R)
clears the stop on the axle by 3/4 ± 1/16 in. (19 ± 1.5 mm)
(U) whencylinderisfullyextended.
J
KLM
3/4±1/16in.
(19±1.5mm)
NS
T
U
P
P+0to1/16”
R(+0to1.5mm)
LF016
N

ADJUSTMENTS 4
en-15
Figure 4F
4.8 CUTTING HEIGHT _________________________________________________________
Cuttingheightfordeckscanbe adjustedfrom 3/4to5-1/4in.
(19-133 mm) in 1/4 in. (6 mm) increments. Actual cutting
height may vary somewhat from the heights given
dependingonturfconditionsandotherfactors.
1. Park the mower on a flat, level surface. Fully lower
cuttingunits.Stopengineandremovekeyfromignition.
2. Refertothechartprovidedfordesiredcuttingheight.
3. To lower height of cut, remove all three snap lock
pins (A). Lift outer spindle shaft (B) slightly and remove
1/2 in. (13 mm) spacers(D) and/or1/4 in (6 mm) spacer
(E) from bottom one at a time until desired height is
obtained. Carefully remove blocks and lower deck
housings (C). Place remaining spacers on top of
spindle and insert snap lock pins. Washer (F) is always
ontop,undersnaplockpin.
4. To raise height of cut, remove all three snap lock
pins (A). Carefully lift deck housing (C) above desired
cutting height and support with blocks. Add 1/2 in. (13
mm) spacers (D) and/or 1/4 in. (6 mm) spacer (E) as
required until desired height is obtained. Lower deck
housing. Place remaining spacers on top of spindle
and insert snap lock pins. Washer (F) is always on top,
undersnaplockpin.
Figure 4G
NOTICE
When cutting undulating areas, lower cutting heights
may cause scalping. Adjust height accordingly to
preventturfdamage.
WARNING
To prevent serious injury, lower deck until it is resting
completely on the front casters and rear roller. This will
prevent it from accidentally lowering while making
adjustments. Disengage all drives, engage parking
brake,stopengine,andremoveignitionkey.
CAUTION
Use proper lifting techniques when lifting or lowering
deck housings. The deck housing assemblies weigh
approximately50lbs(23kg).
!
!
NOTICE
For best quality of cut, always place the same number of
spacersunderdeckhousingonallthreespindles.Adjust
alldeckstosamecuttingheight.
Height
of
Cut
1/2” Spacers
Below Mower
Housing
1/2” Spacers
Above Mower
Housing
1/4” Spacer
Location
3/4 0 9 AboveHousing
10 9 BelowHousing
1-1/4 1 8 AboveHousing
1-1/2 1 8 BelowHousing
1-3/4 2 7 AboveHousing
22 7 BelowHousing
2-1/4 3 6 AboveHousing
2-1/2 3 6 BelowHousing
2-3/4 4 5 AboveHousing
34 5 BelowHousing
3-1/4 5 4 AboveHousing
3-1/2 5 4 BelowHousing
3-3/4 6 3 AboveHousing
46 3 BelowHousing
4-1/4 7 2 AboveHousing
4-1/2 7 2 BelowHousing
4-3/4 8 1 AboveHousing
58 1 BelowHousing
E
F
D
B
A
C
D

4 ADJUSTMENTS
en-16
4.9 TRACTION CONTROL SYSTEM CALIBRATION _________________________________
The Traction Control System (TCS) will need to be calibrated
when a system component has been replaced or the system is
not working correctly. System components include controller,
liftvalve,liftcylinders,orhoses.
1. Allowhydraulicsystemtobecomeproperlywarmedup.An
operator must be in the seat during the calibration
procedure.
a. Startengineandmovethrottletofullposition.
b. Releasetheparkingbrake.
c. TurnPTOswitchON.
d. Fullylowercuttingunitstotheground.
e. Engagetractioncontrolsystem.
f. Allowunittorunfor5minuteswiththesesettings.
2. System must be calibrated with the engine running,
operator in seat, PTO switch in OFF position, parking
brakeengagedandtractionpedalinNeutral.
3. Fullylowercutting units.Verify all fivedecks arealltheway
down.
4. Press and hold TCS switch for 5 seconds. Horn will beep
whencontrollerenterscalibrationmode.
5. Tap the lift lever to raise position and wait for 3 to 5
seconds. Repeat if required until cutting units just begin to
raise.
6. Tap the lift lever to lower position and wait until decks stop
moving. Repeat, tapping joystick if required until front
decksareontheground.
7. Press and hold TCS switch until horn beeps. System is
nowcalibrated.
5-1/4 9 0 AboveHousing
Height
of
Cut
1/2” Spacers
Below Mower
Housing
1/2” Spacers
Above Mower
Housing
1/4” Spacer
Location
WARNING
Never operate the engine without proper ventilation;
exhaustfumescanbefatalwheninhaled.
While warming up the hydraulic system for the calibration
procedure, the cutting unit blades will be turning. Make
certain that the area under and around the cutting units is
cleanandanydebris thatcanbe thrownfromthemachine is
clearedaway.Keepbystandersawayfromunit.
NOTICE
Do not release switch until horn stops for both starting and
finishingthecalibrationprocedure.
!
NOTICE
Do not rush through steps 5 and 6. System will not be
properlycalibrated ifdecksdo not startto raise instep 5 and
arenotfullyloweredduringstep6.
NOTICE
To cancel calibration mode, turn keyswitch to the OFF
position.

ADJUSTMENTS 4
en-17
4.10 TORQUE SPECIFICATION ___________________________________________________
JacobsenusesGrade5Platedboltsasstandard,unlessotherwisenoted.Fortighteningplatedbolts,usethevaluegivenfor
lubricated.
NOTICE
Alltorquevaluesincludedinthesechartsareapproximateandareforreferenceonly.Useofthesetorquevaluesisatyour
sole risk. Jacobsen is not responsible for any loss, claim, or damage arising from the use of these charts. Extreme
caution should always be used when using any torque value.
AMERICAN NATIONAL STANDARD FASTENERS
SIZE UNITS GRADE 5 GRADE 8 SIZE UNITS GRADE 5 GRADE 8
Lubricated Dry Lubricated Dry Lubri-
cated
Dry Lubri-
cated
Dry
#6-32 in-lb(Nm) – 20(2.3) – – 7/16-14 ft-lb(Nm) 37(50.1) 50(67.8) 53(71.8) 70(94.9)
#8-32 in-lb(Nm) – 24(2.7) – 30(3.4) 7/16-20 ft-lb(Nm) 42(56.9) 55(74.6) 59(80.0) 78(105)
#10-24 in-lb(Nm) – 35(4.0) – 45(5.1) 1/2-13 ft-lb(Nm) 57(77.2) 75(101) 80(108) 107(145)
#10-32 in-lb(Nm) – 40(4.5) – 50(5.7) 1/2-20 ft-lb(Nm) 64(86.7) 85(115) 90(122) 120(162)
#12-24 in-lb(Nm) – 50(5.7) – 65(7.3) 9/16-12 ft-lb(Nm) 82(111) 109(148) 115(156) 154(209)
1/4-20 in-lb(Nm) 75(8.4) 100(11.3) 107(12.1) 143(16.1) 9/16-18 ft-lb(Nm) 92(124) 122(165) 129(174) 172(233)
1/4-28 in-lb(Nm) 85(9.6) 115(13.0) 120(13.5) 163(18.4) 5/8-11 ft-lb(Nm) 113(153) 151(204) 159(215) 211(286)
5/16-18 in-lb(Nm) 157(17.7) 210(23.7) 220(24.8) 305(34.4) 5/8-18 ft-lb(Nm) 128(173) 170(230) 180(244) 240(325)
5/16-24 in-lb(Nm) 173(19.5) 230(26.0) 245(27.6) 325(36.7) 3/4-10 ft-lb(Nm) 200(271) 266(360) 282(382) 376(509)
3/8-16 ft-lb(Nm) 23(31.1) 31(42.0) 32(43.3) 44(59.6) 3/4-16 ft-lb(Nm) 223(302) 298404 315(427) 420(569)
3/8-24 ft-lb(Nm) 26(35.2) 35(47.4) 37(50.1) 50(67.8) 7/8-14 ft-lb(Nm) 355(481) 473(641) 500(678) 668(905)
METRIC FASTENERS
SIZE UNITS
NonCritical
Fasteners
into
Aluminum
Lubricated Dry Lubricated Dry Lubricated Dry Lubricated Dry
M4 Nm(in-lb)––––––3.83(34)5.11(45)2.0(18)
M5 Nm(in-lb) 1.80(16) 2.40(21) 4.63(41) 6.18(54) 6.63(59) 8.84(78) 7.75(68) 10.3(910 4.0(35)
M6 Nm(in-lb) 3.05(27) 4.07(36) 7.87(69) 10.5(93) 11.3(102) 15.0(133) 13.2(117) 17.6(156) 6.8(60)
M8 Nm(in-lb) 7.41(65) 9.98(88) 19.1(69) 25.5(226) 27.3(241) 36.5(323) 32.0(283) 42.6(377) 17.0(150)
M10 Nm(ft-lb) 14.7(11) 19.6(14) 37.8(29) 50.5(37) 54.1(40) 72.2(53) 63.3(46) 84.4(62) 33.9(25)
M12 Nm(ft-lb) 25.6(19) 34.1(25) 66.0(48) 88.0(65) 94.5(70) 125(92) 110(81) 147(108) 61.0(45)
M14 Nm(ft-lb) 40.8(30) 54.3(40) 105(77) 140(103) 150(110) 200(147) 175(129) 234(172) 94.9(70)
4.6
8.8
10.9
12.9

5 TROUBLESHOOTING
en-18
5 TROUBLESHOOTING
5.1 GENERAL________________________________________________________________
The troubleshooting chart below lists basic problems that may occur during start-up and operation. For more detailed information
regardingthehydraulicandelectricalsystemscontactyourareaJacobsenDealer.
Symptoms Possible Causes Action
Enginewillnotstart. 1. Parkingbrakedisengaged,traction
pedalnotinNeutral,ormowswitchon.
1. Checkinterlocksystemandstart-upprocedure.
2. Glowplughasnottimedout. 2. Resetignitionswitchandallowglowplugtotimeout
beforecrankingengine.
3. Batterylowonchargeordefective. 3. Inspect conditionofbatteryandbatteryconnections.
4. Fueltankemptyordirty. 4. Fillwithfreshfuel.Changefuelfilter.Bleedfuellines.
5. Fuseblown. 5. Replacefuse.
6. Relaydefective. 6. Testandreplacerelay.
7. Neutralswitchontractionpedaloutof
adjustmentordefective.
7. Adjustorreplaceswitch.
Enginehardtostart
orrunspoorly.
1. Fuellevellow,fuelorfuel filterdirty. 1. Fillwithfreshfuel.Changefuelfilter.Bleedfuellines.
2. Aircleanerdirty. 2. Inspectandreplaceairfilter.
3. Injectors,fuelpump. 3. ConsultEngineManual.
4. Engineproblem. 4. ConsultEngineManual.
Enginestops. 1. Fueltankempty. 1. Fillwithfreshfuelandbleedfuellines.
2. Interlocksnotsetbeforeleaving
operator’sseat.
2. Engageparking brakeand setmowswitchtoOFF.
Engineoverheating. 1. Coolantlevellow. 1. Inspectandaddcoolant.
2. Airintakerestricted. 2. Cleanairintakeatradiator.
3. Waterpumpbeltbrokenorloose. 3. Tightenorreplacebelt.
Batterynotholding
charge.
1. Looseorcorrodedbatteryterminals. 1. Inspectandcleanterminals.
Batterylighton. 2. Lowelectrolyte. 2. Refilltocorrectlevel.
3. Alternatorbeltlooseorbroken. 3. Tightenorreplacebelt.
4. Chargingsystemdefective. 4. SeeEngineManual.
Deckscutunevenly. 1. HeightofCutnotadjustedcorrectly. 1. Inspectheightofcutadjustment.Samenumberofspac-
ersbelowdeckhousingonallspindles.
2. Enginespeedtoolow. 2. Checkenginespeed.Runengineatfullthrottle.
3. Mowspeednotadjustedforturf
conditions.
3. Adjustmowspeedforbestcut.

TROUBLESHOOTING 5
en-19
5.2 CONTROLLER LAMPS______________________________________________________
The controller is a solid state device that monitors and controls
electrical functions. The controller receives input signals from
various switches and sensors throughout the machine and
transmits output signals to operate relays, solenoids and
warninglights.Itcontrolsandresetstimersandcontainsbuiltin
logictocontrolcertainmachinefunctions.
Each input and output signal is displayed through lamps
located on top of the controller. A closed input switch indicates
an active circuit and will turn an input lamp on. An open switch
an inactive circuit and will turn a lamp off. Outputs are active
whentheirlightsareon.
It is important to note that in some cases a lamp or group of
lamps must be on or off for a condition to be true. For example,
tostart themowerthe Mow Switchmustbe off(lamp8 off)while
the Neutral Start Switch (lamp 12), Brake Switch (lamp 6) and
FuelValveHoldCoil(lamp27)mustbeon.
NOTICE
For factory assistance with troubleshooting controller
problems,please note the controller hardware revision and
software version located on the lower right corner of the
controller. [SEE Parts & Maintenance Manual]
Controllers with equal or greater revision levels will be
backwardcompatible.
Controller Functions by Lamp Number
LampOn-Circuitisactive
LampOff-Circuitisinactive
INPUTS OUTPUTS
Lamp Circuit Lamp Circuit
1,2,3,4 ProgramSelect(1, 3and4arenotused) 19 HydraulicFilterLight
5BrakeSwitch 20 HydraulicOilLevelLight
6SeatSwitch 21 NotUsed
7TractionControlSwitch 22 GlowplugLight
8MowSwitch 23 LowerSolenoid
9Joystick-Lower 24 RaiseSolenoid
10 Joystick-Raise 25 Glowplug Relay
11 HydraulicOilLevelSwitch 26 StartRelay
12 NeutralSwitch 27 FuelSolenoid-Hold
13 NotUsed 28 NotUsed
14 Keyswitch-Glowplug 29 AudibleAlarm
15 Keyswitch-Start 30 MowSolenoid
16 JoystickActive 31 FuelSolenoid-Pull
17 HydraulicFilterSwitch 32 Power-Ignition
18 EngineOilPressureSwitch 33 Power-Lights
Lamp
123 456 789 101112 131415 161718
19 20 21 22 23 24 25 26 27 28 29 30
313233
INPUTS OUTPUTS

5 TROUBLESHOOTING
en-20
5.3 ELECTRICAL CIRCUITS ____________________________________________________
Whentroubleshooting themachineusing the controller always
check that Program Active lamps (2) is on. This indicates that
thecontrollerhaspowerandtheprogramisactive.
Individual circuits can be tested by operating an input switch,
checking for the required input signal and looking for a
corresponding output. Keep in mind that not all switches are
locatedontheinstrumentpanel.Thetractionpedal,reelliftlimit
andbrakesarecontrolledbysmallproximityswitchesmounted
ontheframeofthemower.
Ifaninputlampdoesnotlight,aninactive conditionisindicated.
This could be caused by a fuse, faulty switch or poor
connection.
The electrical connections to the solenoids on the hydraulic
valves are also equipped with small indicator lamps. When lit,
these lamps indicate that the output signal has reached the
connection. If lamps do not come on, check wires to and from
connector.
NOTICE
Thecontrollerrequiresaminimumofsixvoltstooperate.