62800 – Battery Power, 3WD
62801 – Battery Power, 2WD
62802 – Gas Hybrid Power, 3WD
62803 – Gas Hybrid Power, 2WD
62804 – Diesel Hybrid Power, 3WD
62805 – Diesel Hybrid Power, 2WD
62825 – Diesel Hybrid Power wi th Premium Seat, 2WD
62826 – Diesel Hybrid Power wi th Premium Seat, 3WD
4187720-GB-rC
WARNING
WARNING: If incorr ectly u sed this machine c an cause seve re
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.
GB
United
Kingdom
11524 WILMAR BLVD,
CHARLOTTE, NC 28273
®
kgkW
1-800-848-1636 (US)
PRODUCT OF U.S.A.
A Textron Company
FOREWORD
This manual contains adjustment, maintenance,
troubleshooting instructions, and parts list 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 instru ctions , you will prolo ng the li fe of yo ur
equipment and maintain its maximum efficiency.
If additional information is needed, contact your
Jacobsen Dealer.
EQUIPMENT OPERATED IMPROPERLY OR BY UNTRAINED PERSONNEL CAN BE DANGEROUS.
Familiarize yourself with the location and proper use of all controls. Inexperienced operators should receive
instruction from someone familiar with the equipment before being allowed to operate the mower.
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 (Parts
and Maintenance Manual, Engine Manual, and
attachments/accessories instruction sheets). If the
operator can not read English it is the owner’s
responsibility to explain the material contained in
this manual to them.
3. Learn the proper use of the mower, the location and
purpose of all the controls before you operate the
equipment. Working with unfamiliar equipment can
lead to accidents.
4. Never allow anyone t o operate or service the mower
or its attachments without proper training and
instructions; or while under the influence of alcohol
or drugs.
5. Wear all the necessary protective clothing and
personal safety devi ces to protect your head, eyes,
ears, hands, and feet. Operate the mower only in
daylight or in good artificial light.
6. Evaluate the terrain to determine what accessories
and attachments are neede d to properly and safely
perform the job. Only use accessories and
attachments approved by Jacobsen.
7. Stay alert for holes in the terrain and other hidden
hazards.
8. Inspect the area where the eq uipment will be used.
Pick up all the debris you can find be fore operating.
Beware of overhead obstructions (low tree limbs,
electrical wires, etc.) and also underground
obstacles (sprinklers, p ipes, tree roots, etc.) Ente r a
new area cautiously. Stay alert for hidden hazards.
9. Never direct discharge of material toward
bystanders, nor allow anyone near the mower while
in operation. The owner/operator can prevent a nd is
responsible for injuries inflicted to themselves, to
bystanders and damage to property.
10. Do not carry passengers. Ke ep bystanders and pets
a safe distance away.
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. Never disconnect or bypass any switch.
13. Do not change the engine governor setting or
overspeed the engine
14. Carbon monoxide in t he exhaust fumes c an be fatal
when inhaled. Never operate the engine without
proper ventilation or in an enclosed area.
15. Fuel is highly flammable, handle with care.
16. Keep the engine clean. Allow the engine to cool
before storing and always remove the ignition key.
17. Disengage all drives and verify parking brake is
engaged 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 or near roads.
19. Local regulations may restrict the age of the
operator.
20. Operate the mower up and down the face of the
slopes (vertically), not across the face (horizontally).
21. To prevent tipping or loss of contro l, do not start or
stop suddenly on slopes. Reduce speed when
making sharp turns. Use caution when changing
directions.
22. Always use the seat belt when operating mowers
equipped with a roll over protective structure
(ROPS).
23. Keep legs, arms, and body inside the seating
compartment while the vehicle is in motion.
This mower 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.
This safety alert symbol is used to alert you to potential hazards.
DANGER - Indicates an imminently hazardous situation which, if not avoided, WILL result in death or serious injury.
WARNING - Indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious
injury.
CAUTION - Indicates a potenti ally haz ardous situa tion whi ch, i f not av oided, MAY result in minor or moderat e inju ry
and property damage. It may also be used to alert against unsafe practices.
NOTICE - Indicates a potentially hazardous situati on which, if no t avoided, MAY result in property damage. It may
also be used to alert against unsafe practices.
For pictorial clar ity, some illustrations in this manual may sh ow shields, gua rds or plates open or removed. U nder no
circumstances should this equipment be operated without these devices securely fastened in place.
WARNING
The Interlock System on this mower prevents the mower from energizing
unless the operator is in the seat, mow switch is OFF, and traction pedal is in
Neutral. The mow, traction, and steering system will be disabled if the
operator leaves the seat.
NEVER operate mower unless the Interlock System is working.
WARNING
1. Before leaving the operator’s position for any reason:
a. Disengage mow switch.
b. Return traction pedal to Neutral and apply foot brake until unit comes
to a complete sto p. Automa tic parking brake light o n LDU sho uld be
on.
c. Lower all implements to the ground.
d. Shut down unit and remove the ignition key.
2. Keep hands, feet, and clothing away from moving parts. Wait for all
movement to stop before you clean, adjust or service the mower.
3. Keep the area of operation clear of all bystanders and pets.
4. Never carry passengers, unless a seat is provided for them.
5. Never operate mowing equipment without the discharge deflector
securely fastened in place.
By following all instructions in this manual, you will prolong the life of your mower and maintain its maximum efficiency.
Adjustments and maintenance should always be performed by a qualified technician.
If additional informati on or service is needed, co ntact your Authorized Jacobsen Dea ler who is kept informed of th e
latest methods to service this equipment and can provide prompt and efficient service.
en-4
DECALS 2
4181865
• Read operator's manual. Do not allow untrained
operators to use machine.
• Keep shields in place and hardware securely
fastened.
• Keep hands, feet, and clothing away from moving
parts.
• Before you clean, adjust, or repair this equ ipment,
disengage all drives, e nga ge parkin g br ake, and stop
engine.
• Never carry pas sengers.
• Keep bystanders away.
• Do not use on slopes greater than 20°.
• Always wear the seat belt.
Danger
To avoid injury when working with battery:
1. Always connect the black (-) ground las t and remove it
first.
2. Keep sparks and fl ames away, and avoid contact with
acid.
To avoid injury when jumping battery:
1. Connect positive (+) terminal to positive (+) terminal.
2. Connect negative (-) termina l on good battery to frame
of vehicle that has dead battery.
2 DECALS
2.1 DECALS _ __ ___ __ ______________ __ ___ ______________ __ __ ___ ______________ __ _
Familiarize yourself with the following decals. They are critical to the safe operation of the
mower . REPLACE DAMAGED DECALS IMMEDIA TELY.
4181864
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2 DECALS
4182520
DANGER
To prevent injury, disengage all drives,
engage parking brake, stop engine, and
remove key before working on machine or
emptying grass catchers.
WARNING
Read all mower manuals before operating
or performing any maintenance.
DANGER
1. Keep a safe distance from the machine. Keep
bystanders away.
2. Properly dispose of components from this
machine. Refer to local regulations for waste
disposal and recycling.
3. Refer to the manual for maintenance and
service procedures.
4. Do not spray water at electrical connectors,
motors or controllers. Remove battery pack before
pressure washing unit.
Familiarize yourself with the following decals. They are critical to the safe operation of the
mower . REPLACE DAMAGED DECALS IMMEDIA TELY.
4169840 REV A
en-6
4181860
DECALS 2
4181863
WARNING
Read manual before
performing maintenance.
IMPORTANT
DO NOT USE STARTING ASSIST FLUIDS
Use of starting assist fluids in the air intake
system may be potential ly explosive or cause a
“runaway” engine cond ition. This could result in
serious engine damage.
WARNING
(Diesel Hybrid Power Units Only)
Radiator is under pressure. Remove
cap slowly to avoid personal injury.
4181862
4181861
en-7
2 DECALS
Disconnect Steering Chain
before towing mower.
Familiarize yourself with the following decals. They are critical to the safe operation of the
mower . REPLACE DAMAGED DECALS IMMEDIA TELY.
Never attempt to drive the mo wer unless you hav e read the Safety and Op eration Manual
and know how to operate all controls correctly.
Familiarize yourself with the icons shown above and what they represent. Learn the
location and purpose of all of the controls and gauges before operating this mower.
Used to display and set operating conditions. See
Section 3.5.
B. Mow Switch
Enables and disables the three reel switches
(C, D and E), and switches lift system betwee n
service Mode and mow Mode. Pull up on the
knob the enable the mowers, lower the reels to the
one-touch position, and change the lift system to
Mow Mode. Push down on the knob to disable the
mowers, raise reels to transport position, and change
lift system to Service Mode. See Section 3.8 fo r lift
system operation.
NOTE: Mower will not start with mow switch in the
ON position.
C. Left Reel Switch
Used to engage and disengage the left reel.
Mow switch (B) must be in the ON (Pu sh front
of switch) position for switch to functio n. When
left reel switch is moved to the OFF position,
left reel will stop and raise to the crosscut
position.
OFF Position - Power to mower is turned off,
automatic parking brake is applied.
RUN Position - Controllers acti ve, normal opera ting
mode. Traction controller does not activate until
switch is moved to START position and returned to
RUN.
START Position - Used to activate the mow and
traction system and start the hybrid engine if
installed. See Section 4.4.
J. Reel Raise/Lower Joystick
Used to raise and lower the three reels. Lift system
operates in two modes, service mode and mow
mode. Individual reels will not lower if the
corresponding reel switch is in the OFF position. See
Section 3.8 for lift system operation.
D. Center Reel Switch
Used to engage and dise ngage the center reel.
Mow switch (B) must be in the ON (Pu sh front
of switch) position for switch to functio n. When
center reel switch is moved to the OFF position,
center reel will stop and raise to the crosscut
position.
E. Right Reel Switch
Used to engage and disengage the right reel.
Mow switch (B) must be in the ON (Pu sh front
of switch) position for switch to functio n. When
right reel switch is mov ed to the OFF position,
right reel will stop and raise to the crosscut
position.
F.Horn Switch
Used to sound the audible alarm. Switch is not
active if system power switch is not in RUN
position.
G. Light Switch
Controls operation of the work lights. Press front
of switch to turn lights ON. Press rear of switch to
turn lights OFF. Switch is not active if system
power switch is not in RUN position.
Figure 3A
H. System Power Switch
Used to energize the electrical system and start the
hybrid engine if installed. Power switch has three
positions, OFF, RUN, and START.
Press forward traction pedal down to move the mower
forward. The further the pedal is pressed, the faster the
mower will travel.
L. Reverse Traction Pedal
Press reverse traction pedal down to move the mower
in reverse. The further the pedal is pressed, the faster
the mower will travel.
M. Brake Pedal
The brake pedal is used to activate the traction motor
brake.
Press the pedal slightly to act as a service brake.
Traction motor brake will apply resistance to the motor
and place mower into regen mode. Press pedal all the
way down to fully engage the brake.
See Section 3.6
and 3.7.
N. Steering Wheel Tilt Lever
Push lever down to release steering column. Tilt
column up or down to position desired. Release lever
to lock steering column in place.
CAUTION
Never adjust tilt steer ing wh ile m ower is moving. Stop
unit before adjusting.
P.Seat Adjustment Lever
Pull lever up and slide seat forward or backward.
Release lever to lock seat in place.
CAUTION
Never adjust seat while mower is moving. Stop unit
before adjusting.
R. 12 Volt Accessory Outlet
Located inside armrest storage compartment. Allows
operation of approved 12 volt accessories and
attachments. To prevent excessive battery drain, only
use 12 volt outlet with engine running.
Only functional
on hybrid powered mowers.
CAUTION
The 12 volt Access ory Outlet circui t is protected by a
10 amp fuse. Do not attempt to use attachment(s) with
a combined power rating greater than 120 watts.
Engine must be running when using accessory outlet.
To prevent the risk of burns or fir e do not replace 10
amp fuse with a higher amperage rating fuse.
S. Choke (Gas Hybrid Mower Only)
Pull the choke control knob out to close the choke
plate when starting a cold engine. A warm engine
may not require “Choking” to start. Slowly push
choke lever in once engine starts.
Remove thumbscrew and lift up on front of access panel
to view MCU diagnostic lights. Always secure access
panel with thumbscrew when operating.
U. Cup Holder
Used to hold a beverage cup for the operator or may be
used as additional storage pocket. Rubber portion of
cup holder is removable for cleaning purposes.
V. Storage Compartment
Used to store glove s and other ne cessary protective
items for the operator.
W. Step
Used to assist operator entering or exiting the
operator’s area.
X. Headlight
Used to provide light when operating in the early
morning or late evening. Light direction can be
adjusted by the operator.
Y.Pivoting Armrest
Used to position armrest for operator comfort.
Armrest will also pivot out of the way for entering or
exiting on the right sid e of the mower. Armrest can
also be adjusted to three different heights.
Z. Center Reel Swing Arm Service Latch
Used to secure center reel swing arm in service
position.
AA.Fuel Filler Neck
Used to add fuel to the mower. Only present on
mowers equipped with gas or diesel power modules.
AB.Center Reel Swing Arm Handle
Used to move center reel out f rom under mower for
servicing. Raise center mower, remove grass
catcher, unlatch arm to swing center reel out, and
latch arm in service position (Z). Do not operate
mower without swing out arm securely latched in
closed position.
AC.Running Light
Light located under operator seat to provide
illumination of cen ter mower and floo rboard. Light is
always on with the system power switch (H) in the
RUN position
AD.Hood Latch
Lift handle up and rotate handle 180° counterclockwise to unlatch hood. With hood closed rotate
handle 180° clockwise to latch hood. Keep hood
latched when operating mower.
AE.Tie Down
Used to secure mower to trailer for transport.
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Figure 3C
CONTROLS 3
!
JACOBSEN
VERSION X.XX
ALAMAN
48 V
12 V
!
12 V
!
3.5LCD DISPLAY UNIT (LDU)___________________________________________________
The LDU displays current functional values for the
operation of the Eclipse
®
mower, has indicator lights, and
sounds audible warni ng alerts. The LDU op erates in on e
of two modes, Operator Mode (Default) and Maintenance
Mode. Use of Maintenance Mode req ui res a four dig it pi n
number. Refer to the Parts & Maintenance Manual for
instructions to ac cess the Main tenance mode, an d more
detailed LDU information.
Press either of the orange buttons (AM or AN) to change
screen display or chang e values. Push the right orange
button (AN) to g o forward in the display li st or increase
setting value, and push the left ora nge butto n (AM) to go
back in the display list or decrease setting value. The
black button (AL) is used to select, reset or change
values.
Figure 3D
3.5.1 Indicator Lights __________________
The LDU has eight indicator lights to indicate system
functions.
Power On Light: Green Power On light
located on left side of the LDU indicates the
controller system has power. A flashing
Power On Light indicates controller
systems have not bee n energized (started)
or mower is in whisper mode (Hybrid
mowers). A solid light indicates the unit is
energized and in normal operation mode.
48V Light: Red 48V light located on left
side of the LDU indic ates s ystem v oltage is
48 V
below 43 VDC for 10 seconds or flashes
when system voltage is above 60.5 VDC for
5 seconds. Charge batteries or check
generator output. LCD display will show
corresponding message.
Parking Brake Light: Red parking brake
light located on left side of the LDU
indicates the automatic parking brake
system is engaged or brake pedal is fully
pressed.
Fault Light: Yellow fault light located on left
side of the LDU indicates the controller
system has detected a fault. See fault
message displayed on LCD.
12V Light: (Hybrid Power Modules Only)
Red 12V light located on right side of the
LDU indicates the engine alternator is not
producing proper voltage. Return unit to
service area as soon as possible.
12V battery and battery charging system.
Inspect
12V
light has no function on battery power
module units.
Glow Plug Light: (Diesel Hybrid Power
Modules Only) Yellow glow plug light
located on right side of the LDU indicates
the diesel engine glow plugs are energized.
Glow plug light h as no function on battery
or gas engine power module units.
Engine Oil Pressure Light: (Hybrid Power
Modules Only) Red engine oil pressure
light located on right side of the LDU
indicates low engine oil pressure. Shut
down unit immediately.
engine. If oil light remains on with oil at proper
level, shut off engine and tow or trailer mower
back to a service area. NEVER operate
engine with oil light on, severe damage to the
engine can occur
. Engine oil pressure light
Inspect oil level in
has no function on battery power module
units.
Coolant Temperature Light: (Diesel
Hybrid Power Modules Only) Red coolant
temperature light located on right side of
the LDU indicates an engine overheat
condition. Shut down unit immediately.
Remove debris such as leaves and grass
clippings that may be restricting air flow
through front screen and radiator. If engine
continues to run hot, return mower to a
service area. Coolant temperature light has
no function on battery o r gas engin e power
module units.
CAUTION
Diesel engine coolant is under pressure. Turn engine off
and allow fluid to cool before checking fluid level or
adding coolant to radiator.
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3 CONTROLS
JACOBSEN
XXXXXXX
Start up
screen
3.5.2 Display Operating Hours ___________
To check operating hours when system power switch is in
the OFF position, press the center (Black) button.
Operating hours will be displayed for 1 minute.
Hours
00000.0
Figure 3E
3.5.3 Start Up Screen ___________________
The Jacobsen start up screen wi ll display for 5 seconds
when the system power switch is tur ned from th e OFF to
the RUN position. The software versio n of the co ntroller s
is displayed under Jacobsen.
Figure 3F
3.5.4 Alarm Codes _____________________
Refer to Section 7-LDU Error Codes for a complete list
of Eclipse error codes.
set to 2200 rpm, and FOC is set to 0. Number of reel
blades, and FOC must be set manually.
3.5.5 Mower Attachment Modes __________
The Eclipse mower, when in Operator Mode, has six
mower attachment sub-modes for operation. Forward
mower operation is standard for all modes.
The six modes are:
Mode 1 - 11 Blade Reel: Use this mode when 11 blade
reels are installed. Reel motor operation is enabled,
number of reel blades ar e set to 11, reel speed is set to
2200 rpm, and FOC is set to 0.16 in. (4.064 mm).
Mode 2 - 9 Blade Reel: Use this mode when 9 blade
reels are installed. Reel motor operation is enabled,
number of reel blad es are set to 9, reel speed is s et to
2200 rpm, and FOC is set to 0.196 in. (4.967 mm).
Mode 3 - Roller: This mode is used wh en the reels are
removed and the optional Quick Roll™ greens rollers are
installed. Reel motor operation is disabled.
Mode 4 - Verticut: This mode is used when optional
Verticut mowers are installed. Reel motor operation is
enabled, 1800 rpm reel speed, and FOC is set to 0.
Mode 5 - Spiker: This mode is used when the reels are
removed and optional spiker attachments are installed.
Reel motor operation is disabled.
Mode 6 - Other: This mode is used when 7 b lade reels,
or an attachment other than those listed above are
installed. Reel moto r operation is en abled, reel spe ed is
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CONTROLS 3
TRAVEL SPEED
00 MPH
SYSTEM VOLTS
48.0 VDC
1900 REEL 1900
1900 RPM
ENTER PIN ?
00 REEL 00
00 AMPS
Hours
00000.0
ENTER PIN
0
Displays system
voltage
MODE 1
REEL
Displays attachment
mode
Displays travel
speed of mower
REEL MOTOR
OFF
REEL MOTOR
ON
Reel motors enabled
for normal operation.
Reel motors disabled
for training purposes.
Displays speed
for reel motors
Displays engine
operation hours
Displays current
for reel motors
Enter PIN to access
Superintendant mode
Enter PIN
Alarm Screens
NO ALARMS
DETECTED
REVIEW
ALARMS?
3.5.6 Operator Mode ___________________
Operator mode is used by the operator to view
attachment mode, system voltage information, travel
speed, reel motor current, reel motor speed, switch
status, operation hours, and stored alarms. Press the
orange buttons (AM and AN) on the LDU to toggle
between the different displays.
Mower Attachment Mode: Displays current mower
attachment mode.
Reel Motor On/Off: Allows reel motor operation to be
disabled for training purposes or practice cutting. Mow
and lift system will func tion normally, with the exception
of the reel motors operating. Press black button (AL) to
toggle between reel on and off. LDU screen will be
locked on REEL MOTORS OFF screen until reel motors
are turned back on. Reel motors will also be enabled by
cycling the system power switch.
NOTE: Enabling reel motors on this screen will not
enable reel motors in Mode 3 Roller or Mode 5 Spiker.
System Volts: Displays the system voltage. Normal
operating voltage is between 43 and 60.5 volts,
depending on the power module installed. High or low
voltage faults may occ ur of system voltage goes above
60.5 volts for 5 seconds or drops below 43 volts for ten
seconds. Some machine functions may be disabled in
cases of high or low system voltage.
Alarms Screens: Used to view alarms stored in system
memory. Alarm message will appear on the screen as
they occur for a fe w seconds, and a beep may sound,
depending on the fault encountered. The alarm is then
stored in system mem ory until key s witch is tur ned to off
position.
Travel Speed: Displays speed mower is traveling . Travel
speed may be limited due to Maximum Mow Speed and
Travel Speed values set in Maintenance Mode, or to
meet current FOC setting.
Reel Motor Current: The reel motor current screen is
provided for the operator and mechanic to help identify
problems before da mage to the reel motor occurs . Notify
maintenance personnel if one reel motor is drawing a
higher current load than the other two motors. The
screen displays the reel motor current for all three reels.
The number in the upp er left corner of the screen is for
the left reel motor, the number in the upper right corner of
the screen is for the right reel mo tor, and the number on
the second row of the screen is for the center reel motor.
Reel Motor Screen: The reel motor speed screen
displays the reel motor speed for all three reels. The
number in the upper left corner of the screen is for the left
reel motor, the number in the upper right corner of the
screen is for the ri ght reel motor, and the number o n the
second row of the scree n is for the center ree l motor. All
three reel motors should be op erating within 50 rpm of
each other.
Enter Pin? S creen: Used to enter Maintenance Mode.
Enter the four digit pin number to access Maintenance
Mode.
Figure 3G
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3 CONTROLS
!
3.6ELECTRONIC TRACTION CONTROL SYSTEM__________________________________
The Eclipse is equipped with an electronic traction
control system whic h utiliz es a con troller and software t o
regulate speed and opti mi ze the d ri veabi li ty of th e un it. A
speed sensor in the dr iv e m otor reports the exact vehic l e
speed to the controller which electronically controls the
drive motor to maintain a smooth and constant speed
whether the unit is going uphill or downhill.
When the direction/speed pedal is returned to Neutral,
the controller uses regenerative braking by essentially
turning the drive motor into a generator and putting
energy back into the battery pack or automatically
adjusting the engine throttl e on hybrid powered mowers
to control proper generator output.
To prevent an overvoltage cond ition, any excess power
created by the regenerative action is sent through the
resistor banks located on the right side of the machine.
System voltage over 6 0 V DC coul d c aus e dam age to th e
controllers.
The Eclipse mower is equipped with an automatic
parking brake. When the parking brake is applied, the
parking brake light on the LDU will be lit. The parking
brake is automatically applied whenever the vehicle is
not moving or the brake pedal is fully depressed.
Additionally, the parking brake will be engaged with the
keyswitch in the OFF position.
If the parking brake does not disengage when the traction
pedal is pressed, or does not engag e when the vehi cl e is
stopped, shut mower down and have the system
inspected.
To disengage parking brake: The parking brake will
automatically disengage when the traction system is
enabled (mower is started), and the traction pedal is
pressed in either the forward or reverse direction.
To engage parking brake: With the vehicle in motion,
release the traction pedal and gently apply the foot brake
to switch the traction motor to regenerative mode. The
further the brake pedal is pressed, the greater the
regenerative action. Once the vehicle comes to a
complete stop, the parking brake will automatically be
applied.
CAUTION
Pressing the peda l al l the way down, wi ll f ully en gag e
the automatic parking brake, and act as an
emergency stop.
The Eclipse 322 lift system operates in one of two
modes, service mode and mow mode, dep ending on the
position of the mow switch (B).
Service Mode - Service mode i s active with mow s witch
(B) in OFF (d own) position and autom atic parking brake
engaged. Service mode is used to raise or lower the
individual reels for servicing, without activating reel
motors. Push f o rwa rd on jo ysti ck (J) to lower reels, or pull
back on joystick to raise reels. Only reels with
corresponding reel switches (C, D, or E) in the ON
position will lower.
If reels are lowered or in the crosscut position, mow
switch is off, and mower starts moving, reels will
automatically raise to the transport position.
NOTICE
A ratcheting sound wi ll come from the lift actuator s if
joystick (J) is pul led back with reels ful ly raised. The
sound is produced by a clutch in the actuator, and is
designed to prevent damage to the actuator.
Mow Mode - Mow mode is active with mow switch (B) in
ON (up) position. Reels will automatically lower to
crosscut position when mow switch is turned ON. Push
forward and releas e joystick (J) to fully lo wer reels and
activate reel motors. Pull back on joystic k and releas e to
raise reels to crosscut position and deactivate reel
motors. Pull back and release a second time to fully raise
reels to transport position.
Only reels with corr esponding reel s witches (C, D, or E)
in the ON position will lower and activate reel motors.
This allows operation of one, two, or all three reels,
depending on area to be cut or operation being
performed (clean up pass, etc.).
NOTE: When operating, depending on mower speed,
there will be up to a two sec ond dela y bef ore center reel
raises or lowers. See Sec tio n 4.8.
If reel(s) fail to raise in mow mode, or an error code
appears in the LDU, stop mower, push down on mow
switch (B), and try to raise the reel in service mode.
Return mower to the ser vice area to hav e the lift syste m
inspected.
The daily inspe ction should be performed onl y when
the system power is off. Turn mow sw itch OFF, lower
reels to the ground, tur n system power switch to O FF
position, and remove the key.
1. Perform a visual i nspec tio n o f the entire unit, look for
signs of wear, loose hardware, and missing or
damaged components. Chec k for fuel or oil leaks to
ensure connections are tight and hoses and tubes
are in good condition.
4.2INTERLOCK SYSTEM ______________________________________________________
crankcase oil, and air cleaner indicator. All fluids
must be at the FULL level mark with engine cold.
Battery units, check battery water level.
3. Make sure all mowers are adjusted to the same
cutting height.
4. Check tires for proper inflation.
5. Test the Interlock System.
Note: For more detailed maintenance information,
adjustments and maintenance/lube charts, see the
Parts & Maintenance manual.
1. The Interlock System prevents the mower from
starting unless the operator is in the seat, mow
switch is OFF, and the traction pedal is in Neutral.
The system also disables the mow, traction, and
steering functions without the operator in the seat.
WARNING
Never operate equipment with the Interlock System
disconnected or ma lfunctio ning. Do not disconnec t or
bypass any switch.
2. Perform each of the following tests to insure the
Interlock System is functioning properly. Stop the
test and have the s ystem inspected and repaired if
any of the tests fail as listed below:
lthe system does not start in test 1;
lthe system does start in test 4;
lthe traction function is not disabled in test 3;
lthe mow, traction, and steering functions are not
disabled during test 2 and 5.
Interlock System Check
3. Refer to the cha rt below for each t est and f ollow the
check (4) marks across the chart. Shut engine off
between each test.
Test 1: Represents normal starting procedure. The
operator is seated, mow switch is OFF, and the
traction pedal is in Neutral. The mower should start.
Test 2: The mower must start with mow, traction, and
steering functions disabled if operator is not in the
seat.
Test 3: The mower must start with traction function
disabled if the traction pedal is not in Neutral.
Traction function will be disa bled until traction p edal
is returned to Neutral.
Test 4: The mower must not start if the mow switch is
ON.
Test 5: St art the mower in the normal manner then lift
your weight off the seat. M ow, traction, and steering
functions shoul d be disabled un til operator sits ba ck
in seat.
TestOperator
Seated
YesNoYesNoYesNoYes No
13333
2333l
3333ll
43333
53l33l
l The mow, traction, and steering functions are disabled without operator in seat.
ll System starts with traction function disabled until traction pedal is returned to Neutral.
A Roll Over Protec tion Structure (ROPS) for this mower is standard eq uipment. Seat belts m ust always be worn .
Always keep seat belt snugly adjusted.
If the mower is overturning, hold onto the steering wheel. Do not attempt to jump out or leave the seat.
CAUTION
To prevent injury, always wear safety glasses, leather work shoes or boots, a hard hat, and ear protection.
1. Under no circumstances should the engine be
started without the operator seated on the mower.
2. Do not operate mower or attachments with loose,
damaged, or missing components. Whenever
possible mow when grass is dry.
3. First mow in a test area to become thoroughly
familiar with the operation of the mower and
controls.
NOTICE
To prevent damage to the reel and bedknife, never
operate reels when they are not cutting grass. Heat
will develop between the bedknife and reel and
damage the cutting edge.
4. Study the area to determine the best and safest
operating procedure. Consider the height of the
grass, type of terrain, location of any drop offs or
sandtraps, and condition of the surface. Each
condition will require certain adjustments or
precautions.
5. Never direct discharge of material toward
bystanders, nor allow anyone near the mower while
in operation. The owner/operator is responsible for
injuries inflicted to bystanders and/or damage to
their property.
CAUTION
Before mowing, pi ck up all debris such as ro cks , toy s ,
sticks, and wire whic h can be thrown by the mower.
Enter a new area cautiously. Always operate at
speeds that allo w you to ha ve comple te control of th e
mower.
6. Use discretion when mowing near gravel areas
(roadway, parking areas, cart paths, etc.). Stones
discharged from the implement may cause serious
injuries to bystanders and/or damage the
equipment.
7. Always turn mow switch OFF to stop blades when
not mowing.
8. Turn mow switch OFF and raise the reels when
crossing paths or roadways. Look out for traffic.
9. Stop and inspect the equipment for damage
immediately after striking an obstruction or if the
mower begins to vibrate abnormally. Have the
equipment repaired before resuming operation.
WARNING
Before you clean, adjust, or repair this equipment,
always disengage al l drives, lower im plements to the
ground, turn system power switch to OFF position,
and remove key to prevent injuries.
10. Slow down and use extra care on hillsides. Read
Section 4.11. Use caution when operating n ear drop
offs.
11. Look behind and down bef ore backing up to be sure
the path is clear. Use care when approaching blind
corners, shrubs, trees, or other objects that may
obscure vision.
12. Never use your hands to clean r eels. Use a brush to
remove grass clippings from blades. Blades are
extremely sharp and can cause serious injuries.
IMPORTANT: Do not use starting assist fluids. Use of
such fluids in the air intake system may be potentially
explosive or cause a “Runaway” engine condition and
could result in serious engine damage.
1. Sit in operator ’s seat, make sure mow switch (B) is
OFF, and traction pedal (K and L, Figure 3B) is in
Neutral.
2. Turn system power switch (H) to RUN. Steering
controller will initialize, LDU (A) will display
Jacobsen start up screen, and all lights on LDU will
be on for two seconds.
WARNING
When steering cont roller initializes, the rear stee ring
motor will turn slightly. To prevent injury, do not turn
power switch to RUN with hood open or performing
work on steering system.
After LDU initializes, green power light will be
flashing two times per second and parking brake light
will be on. Engine oil pressure light will be on for
diesel and gas power modules.
Gas Power Modules: Pull the choke control knob
out to close the choke plate when starting a cold
engine. A warm engine may not require “C hoking” to
start.
Diesel Power Modules: Glow plug light will be on for
1 to 6 seconds dur ing initial ization , do not a ttempt to
start engine until glow plug light turns off.
5. Allow the engine to become warm and properly
lubricated before operating.
NOTICE
Gas and Diesel Power Modules: T o prevent possible
damage to, or shortened life of, the buffer batteries,
reels will be disabled and mower speed limited to 3
mph (4.8 kph) if ke y is not held in the start position
until engine starts.
3. Turn system power switch (H) to START position.
Battery Power Module: Release key, green power
light will be sol id on and traction and mo w systems
will be active.
Gas and Diesel Power M odules: Release as soon
as engine starts. Do not hold switch in the START
position for more than 10 seconds. Once engine
starts, engine oil light (P) should go out, green power
light will be sol id on and traction and mo w systems
will be active.
NOTE: Engine speed is adjusted by the engine
controller and cannot be changed by the operator.
4. Gas Power Modules: Slowly push the choke kno b
in once engine has started.
Remove your foot from traction peda l, regen braking will
start, bringing the mower to a c om ple te s top . To increase
regen braking, slowly depress the brake pedal. When
mower stops, the automatic parking brake will engage
and the parking brake light on the LDU will turn on.
To park the mower under normal conditions:
1. Disengage the mow switch, raise the implements,
and move away from the area of operation.
2. Select a flat and level area to park.
a. Release tractio n pedal to bring the mower to a
complete stop. Automatic parking brake light
should come on once mower stops.
b. Disengage all drives, lower reels to the ground.
c.Hybrid Powered Mowers: Allow engine to
operate at no load for several minutes.
3. Turn system power switch to OFF position, and
always remove key.
If an emergency arises and the mower must be parked in
the area of operation, follow the guidelines outlined by
the grounds superintendent. If the mower is parked on an
incline, chock or block the wheels.
On Eclipse mowers equipped wi th a gas or diesel hy brid
power module, there are two hybrid operating modes
available:
Normal Mode: Normal mode is the default operating
mode. Engine speed is automatically adjusted by the
APU controller to meet generator output needs of the
mower.
Whisper Mode - Whisper mode keeps the engine at lo w
idle. Any power needs exce edi ng ge ner ato r output at low
idle is supplied by the buffer batteries. Transport speed is
limited to 3 mph (4.8 kph) and reels are disabled.
NOTICE
Only use Whisper Mode for short periods of time, and
allow buffer batteries to fully recharge before switching to
Whisper Mode again.
To switch to whisper mode, start the engine in the normal
manner. With the engine running, turn system power
switch to the start position and release. Engine speed will
drop to low idle, transport speed will be reduced to 3 mph
(4.8 kph) and green power light on LDU will flash.
To return to Normal Mode oper ation, turn system power
switch to the start position and release. Green power light
will be steady, engine speed will increase, mower will
increase to no rmal tr an sp or t s pe ed, an d m owe r wil l be in
Normal Mode.
The buffer batteries on Gas and Diesel hybrid power
modules do not have the same capacity as the
batteries in the battery power module and are not
designed to operate in Wh is per Mo de for lon g per i ods
of time. Excessive use of Whisper Mode will shor ten
the life of the buffer batteries.
Read and follow all safety notes contained in this manual
when driving or transporting mower. Refer to Section 4.3
for general operating instructions. When operating in
reverse, look behind you to ensure you have a clear path.
Important: I f th is mo wer is dr iven on pub li c road s, it must
comply with federal, s tate, and local or dinances. Con tact
local authorities for regulations and equipment
requirements.
1. Disengage mow switch (B). Reels will automatically
raise to the transport position once mower starts
moving.
2. Depress traction pedal slowly. Automatic parking
brake should disengage and mower will start
moving.
CAUTION
To prevent tipping or loss of co ntrol, tr avel at redu ced
speed when making turns.
The raising and lowering of the center reel is slightly
delayed from the front reels. When mowing, this allows
the center reel to contact the ground at the same location
as the front reels, resulting in an accurate cut.
The length of delay is automatically adjusted for any
change in vehicle speed, which is determined by the
speed sensor in the drive motor. If the unit is not in
motion or if there is no speed s ensor signal, the center
reel delay will default to a time of approximately 2
seconds. There is no delay when li ft system is in ser vice
mode (Mow switch is OFF).
The reel drive motors and li ft actuators are contro lled by
the RCU. The RCU has built–in overload protection and
will disable the motor or a ctuator i f it is dr aw ing too m uc h
electrical current.
If there is an overload on a reel drive mo tor, the circuit
breaker will trip, the m otor will be disabled, the reel wi ll
raise to the up positio n and the f ault light on the LDU will
flash two times per second.
If there is an overload on a lift actuator, the actuator will
be disabled and the fault light on the LDU will flash two
times per second.
To reset an overload fault condition, the mower must be
shut down and re-started. If the probl em persists, ins pec t
the device and the electrical system to determine the
cause of the overlo ad or c ontact an a utho riz ed J acob se n
dealer.
will eliminate the possibility of the tires tearing the
turf during the turn.
WARNING
5. Each successive pass should overlap the previous
To prevent serious injuries, keep hands, feet, and
clothing away from reel when the blades are moving.
NEVER use your hands to clean reels. Use a brush to
remove grass clippings from blades. Blades can be
sharp and could cause injuries.
To clear obstructions from reel, turn mow switc h OFF,
stop the mower, tur n syste m power swit ch to OFF, and
remove key, then remove obstruction.
NOTICE
one by a few inches.
6. After all of the straight passes have been made,
make one final pass around the outer edge of the
green. This final pass should always be in the
opposite direction from the last time the green was
mowed.
7. Empty the grass catchers before proceeding to the
next green. To remove or install the gra ss catchers,
turn mow switch O FF, lower the reels to the g round,
and shut off the unit. Tilt the grass c atcher body so
the front edge clears the mow er frame, and s lide the
catcher onto or off the catcher frame.
To prevent damage to the reel and bedknife, never
operate reels when they are not cutting grass.
Operators should practice mowing in a clear area to
become familiar with raising and lowering the reels.
Practicing, by turning reel motors off (See Section 3.5.6),
will help the operator become proficient at starting and
stopping each pass within a foot or two of the edge of the
green. Then only one final pass around the gr een will be
required to finish the operation.
NOTICE
Always remove the flag and inspect t he green befor e
mowing. Remove debris or other objects that may
damage the reels and/or bedknives.
Several factors may determine the direction of the
mowing pattern. Sand traps or other hazards near the
green and trees or other o bjects can restri ct where turns
are made. The terrain of the gr een may also be a factor,
but if conditions allow, always try to mow the green in a
different direction than the last time it was mowed.
1. Stop the unit just before reaching the green and raise
the reels. Set the mow switch to ON.
8. Stop and raise the mowers to the transport po sition
when crossing paths or roadways. Look out for
traffic.
NOTICE
To avoid damage to the green, NEVER stop the
forward motion of the mower while on the green with
the reels turning. Stopping the mower on a wet green
may cause wheel indentations.
NOTICE
When verticutting with the Eclipse 322 Jacobsen
recommends setting the reel speed at 1800 rpm. If the
reel motor temperature or current exceeds limits,
reduce ground speed of mower, reduce reel speed, or
adjust verticutter depth.
2. Proceed toward the green at mowing speed. Refer
to Section 4 for matching mowing speed to desir ed
Frequency of Cut.
3. Lower the reels as the front grass catchers cross
the edge of the green. At th e end of the pass, raise
the reels as the just befor e grass catchers cr oss the
edge of the green.
4. Always make mowing pass es across the green in a
straight line. Do NOT start to make the turn for the
next pass until the center whee l is off the green, this
en-24
OPERATION 4
!
!
0°
Degrees are shown to nearest 1/4°
General Slope of Roadway Embankment - 45°
Steepest Grass Area - 31°
Slope of Average Roof - 19-1/4°
2nd Class Highway Maximum Grade - 4-1/2°
Toll Road or Freeway - 1-3/4°
To minimize the possibility of overturning, the safest
method for operatin g on hills and te rraces is to travel
up and down the face of the slope (vertically), not
across the face (horizontally). Avoid unnecessary
turns, travel at reduced speeds, and stay alert for
13° Maximum
hidden hazards and drop offs.
CAUTION
Do not operate this mower on side slopes greater than
13° or 23% grade.
The mower has been designed for good traction and
stability under norm al mowing conditions; however, use
caution when operating o n slopes, esp ecially over r ough
terrain or when the grass is wet. Wet grass reduces
traction and steering control.
1. If the mower tends to slide or the tires begin to “mark”
the turf, angle mower into a less steep grade until
traction is regained or tire marking stops.
2. If mower continues to slide or mark the turf, the
grade is too steep for safe operation. Do not make
another attempt to climb, and back down slowly.
Correct tire pressure is essential for maximum traction.
Front - 16 psi (1.11 BAR)
Rear - 20 psi (1.38 BAR )
13° Maximum
Figure 4B
Figure 4C
en-25
4 OPERATION
C
A
B
D
How to calculate a slope:
Tools Required:
Level (A), either 1 yard, or 1 meter long.
Tape measure (B).
With the level (A) positioned horizontally, measure the
distance (C) with tape measure (B). Use the chart to
calculate either the slope angle or the % grade of the
slope (D).
Height (C)Result (D)
Inches with 1 Yard Level (A)Millimeters with 1 Meter Level (A)Slope in DegreesSlope Grade %
Figure 4D
en-26
3
1005.710.0
1508.515
6
20011.320.0
7.5
22512.722.5
92501425.0
27515.427.5
10
30016.730.0
11
32518.032.5
12
35019.335.0
13
37520.637.5
14
40021.840.0
15
42523.042.5
16
47525.447.5
1850026.650.0
20
60031.060.0
25
80038.780.0
30
90042.090
36100045.0100
4.88.3
9.516.7
11.820.8
15.527.8
17.030.6
18.433.3
19.936.1
21.338.9
22.641.7
2444.4
29.155.6
34.869.4
39.883.3
OPERATION 4
!
4.12 LOADING MOWER ON T R AI LER _________ __ ___ __ ______________ __ ___ __ ________
Use care when loading and unloading mower onto trailer.
Fasten mower to trailer, using tie downs on left and r ight
side and rear of mower (AE - Figure 3C), to prevent
mower from rolling or shifting during transport.
If the mower experiences problems and must be shut
down and removed from the area, it should be towed
back to the maintenance area, or loaded onto a trailer for
transport. See Section 4.13 for towing instructions.
Fully raise reels before dri ving up trailer ramp. Lift arms
must be in lift locks and bumpers properly adjusted to
prevent damage to reels, mower, or other objects.
If the mower is to be trailered on the highway, before
strapping to trailer, inflate tires to 22 psi (1.5 BAR). After
unloading mower, reduce tire pressure to normal
operating pressure. See Section 4.8.
Always secure armrest cover in closed position with a
strap when transporting.
NOTICE
Failure to p roperly se cure armres t co ver in the clo sed
position when transporting may result in armrest cover
damage.
Mower brakes have be en disabled and are not able
to stop mower.
WARNING
To prevent injury, keep bystanders away when
loading or unloading a disabled mower on trailer.
Mower brakes have been disabled and may not be
used to stop mower.
Do not attempt to roll mower down trailer ramp
without use of winch or similar device to restrain
mower.
7. After unloading mower, remove brake disengage
screws from brake and insert orange plugs. Store
screws in pouch on back of seat. Do Not operate
mower with automatic parking brake manually
disengaged.
Make certain key switch is in OFF position and key
removed.
If mower is unable to drive onto trailer on its own
power, follow this procedure:
1. Follow procedure f or disengaging automatic park ing
brake. See Section 4.13.
2. Make sure reels ar e raised . If they cannot be raised ,
remove them from the mower.
3. Make certain ke y switch is in OFF po sition and key
removed.
4. Use a winch or other device to load mower onto
trailer. Mower must be moved in a straight line to
prevent damage to steering system.
Use tie down at rear of mo wer for attaching wi nch. If
front tie downs must be used, winch must be
connected to both the left and right tie downs.
5. With mower strapped down to trai ler, remove brake
release screws to apply parking brake. Brake must
be disengaged again before unloading mower.
6. Carefully unload mower from trailer usi ng a winch or
other device to slowly get mower down trailer ramp.
If the mower experiences problems and a trailer is not
available, the unit can be towed slowly short distances.
1. Automatic parking brake under right side of
floorboard must be disengaged.
WARNING
If mower is on an incline, chock or blo ck the wheels
before manually disengaging automatic parking
brake. Mower will roll with parking brake disengaged.
Towing vehicle must be capable of stopping mower
without assistance from mower brakes.
a. Remove two orange plugs (ZZ) from right side of
brake.
b. Disconnect brake electrical connector (ZX).
c.Obtain two brake disengage screws (ZY) from
pouch on back of seat, or use two M5 x 35 mm
full thread hex head screws.
d. Hand thread screws into brake armature. Tighten
with wrench 1 to 2 additio nal turns . B rake shoul d
be disengaged. If brake is still binding, tighten
screws an additional 1/2 turn. Do not overtig hten
screws.
7. Use caution when towing. Avoid steep inclines.
Steep inclines may cause tow bar to contact and
damage hood and hoo d hinges. To prevent damage
to steering proximity switches or steering yoke,
avoid turns that will cause rear wheel to turn more
than 55° in either direction.
8. After towing mower, remove tow bar accessory,
attach steering chain, rem ove screws (ZY), connect
brake electrical connector (ZY), and insert orange
plugs (ZZ). Store screws in pouch on back of
mower.
WARNING
Do Not operate mower with a utomatic parking brake
manually disengag ed.
Remove brake release screws and connect steering
chain before returning mower to normal operation.
NOTICE
If brake electrical connector is disconnected, and
mower is started, then brake light will turn off, and
mower will not move under traction power.
2. Open hood, remove four thumb screws (ZU), and lift
steering cover (ZV) off mower.
3. Remove steering chain master link (ZW). Remove
chain from steering motor.
4. Attach tow bar accessory, Part No. 62811, to rear
steering yoke (Refer to tow bar instruction sheet).
Do not use tow strap to tow mower. Connect other
end of tow bar to towing vehicle equipped with 1-7/ 8
in. ball hitch and vehicle tow bar 10-15 in. (254 381mm) from ground.
5. Before towing make sure reels are raised. If they
cannot be raised, remove them from the mower.
6. Make certain key switch is in off pos ition and key is
removed.
WARNING
To prevent injury or damage to mower, do not tow
mower with system power switch in RUN position.
Do not exceed 2 MP H (3.2 KPH) while towing. Lon g
distance towing is not recommended.
Important: For more detailed main tenance information,
adjustments and maintenanc e/lubricatio n charts, see the
Parts & Maintenance manual.
1. Park the mower on a fl at, level surface. Fully lower
the reels to the gr ound, stop th e engine and remove
key from ignition switch.
2. Grease and lubr icate all points if req uired. Lubricat e
with grease that meets or exceeds NLGI Grade 2
LB specifications. Apply grease with a manual
grease gun and fill slowly until grease begins to
seep out. Do not use compressed air.
NOTICE
To prevent damage to reel motor, do not over-grease
reel bearings. Damage of this nature is not covered by
the factory warranty.
3. To prevent fires, clean the reels and mower after
each use.
a. Whenever p os sib le, use compressed air to cl ea n
mower.
f.Clean all plastic or rubber components with a
mild soap solution and warm water, or use
commercially available vinyl/rubber cleaners.
4. Remove any dirt or ot her debris from both steering
proximity switches.
Battery Powered Mowers:
Disconnect power connec tor and c onn ec t batt ery pack to
charger.
Fuel (Hybrid Powered Mowers)
Fill mower’s fu el tank a t the en d of each operating day to
within 1 in., (25 mm) be low the filler neck. Only fill fuel
tank with mower sitting on a flat and level surface.
Diesel Engine - Use clean, fresh #2 low or ultra-low
sulfur diesel fuel. Minimum Cetane Rating 45.
Handle fuel with care - it is highly flammable. Use an
approved container; the spout must fit inside the fuel filler
neck. Avoid using cans and funnels to transfer fuel.
b. Use only fresh water for cleaning your
equipment.
NOTICE
Use of salt water o r effluen t water has b een know n t o
encourage rust and cor rosion of metal parts resulting
in premature dete rioration or failure. Damage of this
nature is not covered by the factory warranty.
NOTICE
Do not use high pressure spray.
c. Do not pressure wash mower.
d. Do not spray wat er directly at instrument panel,
electrical connectors, generator, controllers,
motors, or any other electrical components.
e. Do not spray wat er into the cooling air intake or
the engine air intake.
NOTICE
WARNING
Never remove the fuel cap from the fuel tank, or add fuel,
when the engine is running or while the engine is hot.
Do not smoke when handling fuel. Never fill or drain the
fuel tank indoors.
Do not spill fuel. Clean spilled fuel immediately.
Never handle or store fuel containers near an open flame
or any device that may create sparks and ignite the fuel
or fuel vapors.
Be sure to reinstall and tighten fuel cap securely.
• Store fuel according to local, state, or federal ordinances
and recommendations from your fuel supplier.
• Never overfill or allow the tank to become empty.
Do not wash a hot or running engine. Use
compressed air to clean the mower, engine and
radiator fins to r educe the potential fo r corrosion and
moisture contamination.
en-29
5 QUALITY OF CUT
TN0159
5 QUALITY OF CUT
5.1 QUALITY OF CUT TROUBLESHOOTING_______________________________________
It is recommended that a “test cut” be performed to
evaluate the mower’s performance before beginning
repairs.
An area should be available where “test cuts” can be
made. This area should provide known and consistent
turf conditions to allow accurate evaluation of the
mower’s performa nc e.
Another “test cut” should be performed after the
completion of the repairs and/or adjustments to verify the
mower’s performa nc e.
Before performing a “test cut” to diagnose cut
appearance and mower performance, the following items
should be verified to ensure an accurate “test cut.”
1. Mowing (Ground) Speed. Section 3.5.6.
2. Reel Bearing Condition and Pre-Load (End Play)
Adjustment.
Washboarding is a cyclical pattern of varying cutting
heights, resulting in a wave-like cut appearance. In most
cases, the wave tip-to-tip distance is approximately
6—8 in. (15—20 cm). Color variation (light-to-dark) may
also be noticed.
This condition is usually caused by a rocking motion in
the cutting unit(s). This condition is found mostly on
mowers with multiple (suspended) cutting units, but other
causes can produce the same result.
Washboarding may also be caused by variations in the
turf.
NOTE: Arrow indicates direction of travel.
Probable CauseRemedy
Mowing (ground) speed is too fast.Reduce mowing (ground) speed.
Grass build-up on roller.Clean the roller and use scrapers or brushes.
Roller is out of round.Replace roller.
Mowing in the same direction.Change mowing direction regularly.
Use of a groomer on cleanup pass.Groomers should be used only in a straight line.
Reel drive motor performance is reduced.Check LDU for excessive reel motor current and/or
en-30
temperature. Check/remove cutting reel movement
obstruction.
Marcelling, like washboarding, is a cyclical pattern of
varying cutting heights, resulting in a wave-like cut
appearance. In most cases, the wave tip-to-tip distance is
2 in. (5 cm) or less.
NOTE: Arrow indicates direction of travel.
Probable CauseRemedy
Mowing (ground) speed is too fast.Reduce mowing (ground) speed.
HOC (height-of-cut) setting is too low for turf
conditions.
Cutting reel diameter is worn.Check cutting reel diameter and replace if worn.
Reel drive motor performance is reduced.Check LDU for excessive reel motor current and/or
Check/adjust HOC to turf conditions.
temperature. Check/remove cutting reel movement
obstruction.
Step cutting occurs when grass is cut taller on one side of
a reel than the other or one cutting unit to another. This is
usually caused by mecha nical wear or an incor rect roller
or HOC (height-of-cut) adjustment.
NOTE: Arrow indicates direction of travel.
Probable CauseRemedy
HOC (height-of-cut) settings are different from one
side of a reel to the other or from one cutting unit to
another.
Worn front roller bearings.Check/replace front roller bearings.
Reel-to-bedknife contact is different from one side of
the cutting unit to the other or from one cutting unit to
another.
Cutting reel movement is restricted.Check/remove cutting reel movement obstruction.
Variations in turf density.Change mowing direction.
Machine weight distribution is uneven.Check/adjust tire inflation pressure.
Scalping is a condition in which areas of grass are cut
noticeably shorter than the surrounding areas, resulting in
a light green or even brown patch. Thi s is usually caus ed
by an excessively low he ight-of-cut (H OC) setting and/or
uneven turf.
NOTE: Arrow indicates direction of travel.
Probable CauseRemedy
HOC (height-of-cut) settings are lower than normal.Check/adjust the HOC settings.
Improper reel-to-bedknife adjustment.Adjust reel-to-bedknife setting for desired HOC.
Turf too uneven for the mower to follow. Change mowing direction.
Cutting too much grass at one time.Mow more often.
Mowing (ground) speed is too fast.Reduce mowing (ground) speed.
Stragglers are scattered blades of uncut or poorly cut
grass.
NOTE: Arrow indicates direction of travel.
Probable CauseRemedy
Bedknife improperly adjusted.Adjust reel-to-bedknife setting.
Dull reel or bedknife cutting edges.Sharpen or replace reel blade and bedknife as necessary.
Mowing (ground) speed is too fast.Reduce mowing (ground) speed.
Grass is too tall.Mow more often.
Mowing in the same direction.Change mowing direction regularly.
Nicks in reel or bedknife.Grind, sharpen or replace reel blades and bedknife as
Windrowing is the deposit of clippings concentrated at
one end of cutting unit(s) or between two cutting units,
forming a line in the direction of travel.
NOTE: Arrow indicates direction of travel.
Probable CauseRemedy
Grass is too tall.Mow more often.
Mowing while grass is wet.Mow when grass is dry.
Grass built up on roller(s).Clean roller(s) and scraper(s).
Grass collecting on bedknife.Adjust reel-to-bedknife setting.
en-36
QUALITY OF CUT 5
5.9RIFLING OR T R A M LININ G________________________ ___ __ __ _________________ ___
Rifling or tramlining is a pattern of varying cutting heights,
resulting in a wave-like cut appearance, usually due to
heavy contact points across a reel and/or bedknife.
NOTE: Arrow indicates direction of travel.
Probable CauseRemedy
Reel and/or bedknife unevenly worn.Inspect bedknife and reel. Sharpen or replace reel and
bedknife as necessary.
Missing, loose, or overtorqued bedknife screws.Install, replace or tighten bedknife screws to proper
torque setting.
Mowing (ground) speed is too fast.Reduce mowing (ground) speed.
5.10 MISMATCHED CUTTING UNITS ______________________________________________
Mismatched cutting units is a pattern of varying cutting
heights, resulting in a stepped cut appearance, usually
due to mismatched HO C (height-of-cut) adjus tment from
one cutting unit to another.
NOTE: Arrow indicates direction of travel.
Probable CauseRemedy
HOC inconsistent from one cutting unit to another.Check/adjust HOC on cutting units.
Difference in mower ride height side to side.Check/adjust tire inflation pressure.
Batteries contain dilute sulfuric acid which can result in severe burns.
Hydrogen gas is for med within a b attery durin g the chargin g cycle. Hydr ogen in conce ntrations of 4 % and higher are
explosive and can be ignited by open flame or an electric al spark. A battery explosion will cause sulfuric acid an d
battery components to be thrown over a large area with considerable force.
Always observe the following warnings when working on or near batteries:
WARNING
The electrolyte in a st orage battery
is a dilute acid which can cause
severe burns to th e skin and eyes.
Treat all electrolyte spills to the body
and eyes with extended flushing
with clear water. Contact a physician
immediately. Always wear a safety
shield or approved safety goggles when charging
batteries.
Hydrogen is explosive in concentrations as low as 4%
and is generated in the charging cycle of electric
mowers. Because it is lighter than air, it will collect in
the ceiling of buildings necessitating proper
ventilation. Air exchanges of 5 changes per hour is
considered the minimum requirement.
Never smoke around batteries.
Never charge batteries in an area that has open flame
or electrical equ ipment that could ca use an electrical
arc.
Be sure that the key switch is off, all electrical
accessories are turned off and power connector is
disconnected before starting work on vehicle.
WARNING
Wrap wrenches with vinyl tape to
prevent the possibility of a dropped
wrench from ‘shorting out’ a battery,
which could resu lt in an explosion and
severe personal injury.
Electrolyte spills should be neutralized
with a solution of 1/4 cup (59.1ml) of
sodium bicarbonate ( baking soda) dissolved in 1-1 /2
gallons (5.7 liters) of water and flushed with water.
Never disconnect a circuit under load at a battery
terminal.
Wear appropriate protective clothing when working
with batteries. Electrolyte c an cause severe burns to
the eyes, skin, and clothing.
Batteries, battery posts, terminals, and related
accessories contain lead and lead compounds,
chemicals known to the State of California to cause
cancer and reproductive harm. Wash your hands
A new battery set must go through a conditioning process
before it will develop its ma ximum capacity. Conditioning
may take up to 50 charge/discharge cycles until full
capacity and run time are achieved. A battery has a
maximum life, therefore good maintenance is designed to
maximize the available li fe and reduce the factors that
can reduce the life of th e battery. Refer to Figure 6A for
battery age vs. capacity chart.
en-38
NOTICE
Chart shown in Figure 6A refers to an 80% Depth of
Discharge (DOD) with theoretical life of 750 cycles.
The charts shown in Figure 6A and Figure 6B are
provided for reference only and is to be used as a
guideline for estimating capacity of a battery pack.
Actual battery life may be shorter or longer, depending
on the actual DOD experienced by the battery set,
and maintenance battery set rece iv es.
BATTERIES 6
0
10
20
30
40
50
60
70
80
90
100
050010001500200025003000350040004500500055006000
Theoretical Life Cycles
Depth of Discharge (%)
Depth of Discharge
DOD %
0
10
20
30
40
50
60
70
80
90
End of mowing
Voltage (V)
50.928
50.472
49.992
49.488
48.960
48.408
47.832
47.256
46.632
46.032
The conditioning proces s can be monitored by checking
the specific gra vity o f the bat tery ce lls. After th e battery
set has been rec harged, spot check two or more b attery
cells. A fully charged fully conditioned battery with an
electrolyte temperature of 80° F (27° C) has a gravity
reading of 1.280.
Once the battery set h as completed 50 charge/di schar g e
cycles, Depth of Discharge (DOD) can be measured.
To determine the DOD, measure the battery pack voltage
after mowing for a period of two weeks. Average the
results and look up the D OD, using the le ft side chart in
120.0
<10% of Total Cycles
100.0
80.0
60.0
@ 56 Amps
Capacity, %
40.0
Age vs Capacity 80% DOD
Figure 6B. These values are based on a standard 78° F
(25.5° C) battery temperature. Using the DOD refer to the
right side chart in Figure 6B to determine theor etical life
cycles.
As a battery ages, it still pe rforms adequate ly except the
expected run time, or capacity, will decrease. Capacity
describes the time that a batte ry can continue to prov ide
its design amperes from a full charge.
Temperature is important when conducting tests on a
battery and test results must be corrected to compensate
for temperature differences.
The Eclipse mower is available equipped with either a
battery power module, a gas engine hybrid power
module, or a diesel engine hybrid power module.
1. The battery powered Eclipse has six, 8 VDC
batteries wired in series. Batteries must be
disconnected from the mower before charging.
2. The gas and diesel hyb rid powered mowers contain
two separate battery systems.
a. A 48 VDC buffer bat tery pack, comprised of four
12VDC batteries wired in series. The buffer
batteries are charged by the hybrid generator
during operation. See Parts & Maintenance Manual for charging buffer batteries using an
1. Never allow the batteries to become completely
discharged at any time.
2. Always fully recharge the batteries after every use.
3. Check for conditions that will affect battery
performance and life.
a. Too little clearance between the bedknife and
reel
b. Improper reel lubrication
d. Excessive use of Whisper mode on hybrid power
modules.
c. Improper operation of electrical system
d. Poor condition of charger plug and receptacle
4. Battery performance is also affected by the ambien t
temperature. Battery capacity is increased by 7
percent for every 15° F (8° C) the temperature is
above 77° F (25° C). Battery capacity is decreased
by 7 percent for every 15 ° F (8° C) the temperature
is below 77° F (25° C).
c. Low tire pressure
6.5BATTERY CHARGER (BATTERY POWER MODULE)_____________________________
Refer to the Parts & Maintenance Manual for more
detailed charging information.
WARNING
1. Make certain ignition switch is off. Disconnect battery
pack power connector.
2. Lift up on the charger receptacle cover on the left
side of the mac hine. Plug end of the AC extens ion
cord into charger receptacle.
3. Plug the AC power cord from the charger into a
suitable wall outlet.
4. When the batteries are fully charged, the charger
will turn off automatically. Unplug the charger AC
cord from the wall outlet first, then disconnect the
cord from the mower. Store the AC cord in a safe
location for the next time charging is required.
The charging must take place in an area that is well
ventilated and capable of removing the hydrogen gas
that is generated by the charging process. A minimum of
five air exchanges per hour is recommended.
Hydrogen is explosive in conce ntrati ons as low as 4%
and is generated in the charging cycle of electric
mowers. Because it is li ghter than air, it will collect in
the ceiling of buildings necessitating proper
ventilation. Air exchanges of 5 changes per hour is
considered the minimum requirement.
Never smoke around batteries.
Never charge batteries in an area that has open flame
or electrical equip ment that could cause a n electrical
arc.
Be sure that the key switch is off, all electrical
accessories are turned off, and power connector is
disconnected before starting work on vehicle.
Remove all jewelry (watches, rings, etc.).
The charger AC cord must be fully inserted into the
charger receptacle and the wall outlet.
When cleaning the batteries, do not use a water hose
without first spraying with a solution of sodium
bicarbonate (baking soda) and water to neutralize any
acid deposits. Use of a water hose without first
neutralizing any acid, will move acid from the top of the
batteries to another are a of the mower or storage facility
where it will attack the metal structure or the concrete/
asphalt floor. After hosing down the batteries, a residu e
will be left on the batteries which is conductive and will
contribute to corrosion and the discharge of the batteries.
Make sure the battery filling system caps are in place
before cleaning batteries. Use care to insure the soda
and water solution does not ente r th e ba ttery throug h th e
vent caps.
When cleaning the bat teries, be sure all of the b atteries
on the mower are cleaned. Parti cular att ention shou ld be
placed on cleaning batteries on bottom level of battery
tray as they will tend to pick up more sand and debris.
The correct cleaning technique is to spray the top and
sides of the batteries with a solution of sodium
bicarbonate (baking soda) and water. This solution is
best applied with a garden type spray er equipped with a
non metallic spray wand. The solution should consist of
1/4 cup (59.1 ml) of sodium bicarbonate (baking soda)
mixed with 1-1/2 gal lons (5.7 l) of c lear wate r. In addition
to the batteries, metallic compo nents (battery tray, hold
downs, etc.) adjacent to the batteries should also be
sprayed with the sodium bicarbonate (baking soda)
solution.
Figure 6C
Allow the solution to sit for at least three minutes; use a
soft bristle brush or clo th to wipe the tops of the batte ries
in order to remove any residue that coul d cause the self
discharge of the ba ttery. Be careful not to disconnect or
dislodge battery filling system components (hoses, caps).
Rinse the entire area with low pressure clear water.
Cleaning should take plac e weekly or more often under
extreme conditions.
en-41
7 LDU ERROR CODES
7 LDU ERROR CODES
7.1 GENERAL INFORMATION __________ __ ______________________________________
When the Eclipse mower encounters an error or fault in
one of the controllers, an er ror code will display on the
Refer to the following list for LDU error codes and
machine f unctions.
mower to maintenance shed.
Transport speed will be limited to 3
mph (4.8 kph).
Diesel engine coola nt above 2 30°vF.
TEMPERATURE
HIGH ALARM
(110° C). Return mower to
maintenance shed. Transport spee d
will be limited to 3 mph (4.8 kph).
12 VDC system below 12.5 VDC.
12 VOLT
SYSTEM LOW
Return mower to maintenance shed.
System voltage drops belo w 4 3 V DC
48 VOLT
SYSTEM LOW
for 10 seconds or more. Return
mower to maintenance shed.
Transport speed will be limited to 4
mph (6.4 kph).
Caution
LED
OnOff Yes No Yes No Yes No Yes No
44444
44444
44444
44444
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
48 VOLT
SYSTEM HIGH
LOW FUEL
WARNING
System voltage above 60 VDC.
Return mower to maintenance shed.
Transport speed will be limited to 3
mph (4.8 kph).
Fuel level in tank i s low. Less than 2
qts (1.9 l) fuel remaining in tank.
Return to fueling area. Do not allow
tank to complete ly empty.
44444
44444
en-42
LDU ERROR CODES 7
7.3REEL CONTROL UNIT ERROR CODES ________________________________________
RCU error codes are displayed on the LDU as a
message.
LDU Error MessageError Description
Left Reel Motor Temperature above
LEFT REEL
TEMPERATURE
266° F (130° C).
Center Reel Motor Temperature
CENTER REEL
TEMPERATURE
above 266° F (130° C).
Right Reel Motor Temperature above
RIGHT REEL
TEMPERATURE
above 266° F (130° C).
Left Reel Motor Short Circuit. Shut
LEFT REEL
FAULT
mower off, and remove key. Check
reel for blockage. Restart mower. If
fault returns, return mower to
maintenance shed.
Center Reel Motor Short Circuit.
CENTER REEL
FAULT
Shut mower off, and remove key.
Check reel for blockage. Restart
mower. If fault returns, return mower
to maintenance shed.
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes No Yes No Yes No Yes No
44444
44444
44444
44444l
44444l
RIGHT REEL
FAULT
LEFT REEL
OVERCURRENT
CENTER REEL
OVERCURRENT
Right Reel Motor Short Circuit. Shut
44444l
mower off, and remove key. Check
reel for blockage. Restart mower. If
fault returns, return mower to
maintenance shed.
Left Reel Motor current over 35
44444l
Amps for 30 seconds. Shut mower
off, and remove key. Check reel for
blockage. Restart mower. If fault
returns, return mower to
maintenance shed. Excessive grass
height being mowed.
Center Reel Motor current over 35
44444l
Amps for 30 seconds. Shut mower
off, and remove key. Check reel for
blockage. Restart mower. If fault
returns, return mower to
maintenance shed. Excessive grass
height being mowed.
l If fault returns after shutting down and restarting mower, mowing can continu e with other
reels if reel enable switch for indicated reel is turned OFF.
en-43
7 LDU ERROR CODES
LDU Error MessageError Description
Right Reel Motor current over 35
RIGHT REEL
OVERCURRENT
Amps for 30 seconds. Shut mower
off, and remove key. Check reel for
blockage. Restart mower. If fault
returns, return mower to
maintenance shed. Excessive grass
height being mowed.
Left Reel Motor fuse blown. Return
LEFT REEL
VOLTS LOW
mower to maintenance she d. Check
150 amp fuse in PDU.
Center Reel Motor fuse blown.
CENTER REEL
VOLTS LOW
Return mower to maintenance shed.
Check 150 amp fuse in PDU.
Right Reel Motor fuse blown. Re turn
RIGHT REEL
VOLTS LOW
mower to maintenance she d. Check
150 amp fuse in PDU.
Left Reel Motor RPM is not within the
CHECK
LEFT REEL
range of the set point. Shut mower
off, and remove key. Check reel for
blockage. Restart mower. If fault
returns, return mower to
maintenance shed. Excessive grass
height being mowed.
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes No Yes No Yes No Yes No
44444l
44444
44444
44444
44444
CHECK
CENTER REEL
CHECK
RIGHT REEL
L ACTUATOR
OVERCURRENT
Center Reel Motor RPM is no t within
44444
the range of the set point. Shut
mower off, and remove key. Check
reel for blockage. Restart mower. If
fault returns, return mower to
maintenance shed. Excessive grass
height being mowed.
Right Reel Motor RPM is not within
44444
the range of the set point. Shut
mower off, and remove key. Check
reel for blockage. Restart mower. If
fault returns, return mower to
maintenance shed. Excessive grass
height being mowed.
Left Actuator Overcurrent. Shut
44444l
mower off, and remove key. Check
grass catcher for excessive weight.
Restart mower. If fault returns, return
mower to maintenance shed.
l If fault returns after shutting down and restarting mower, mowing can conti nue with other
reels if reel enable switch for indicated reel is turned OFF.
en-44
LDU ERROR CODES 7
LDU Error MessageError Description
Center Actuator Overcurrent. Shut
C ACTUATOR
OVERCURRENT
mower off, and remove key. Check
grass catcher for excessive weight.
Restart mower. If fault returns, return
mower to maintenance shed.
Right Actuator Overcurrent. Shut
R ACTUATOR
OVERCURRENT
mower off, and remove key. Check
grass catcher for excessive weight.
Restart mower. If fault returns, return
mower to maintenance shed.
Left Actuator or wiring S hort Circuit.
L ACTUATOR
FAULT
Shut off mower and remove key.
Check both actuator connectors for a
tight connection. Check visible
portion of wire har ness for damage.
Restart mower. If fault returns, return
mower to maintenance shed.
Center Actuator or wiring Short
C ACTUATOR
FAULT
Circuit. Shut off mower an d remove
key. Check both actuator connectors
for a tight connecti on. Check visible
portion of wire har ness for damage.
Restart mower. If fault returns, return
mower to maintenance shed.
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes No Yes No Yes No Yes No
44444l
44444l
44444
44444
R ACTUATOR
FAULT
CHECK LEFT
ACTUATOR
CHECK CENTER
ACTUATOR
Right Actuator or wiring Short Circuit.
44444
Shut off mower and remove key.
Check both actuator connectors for a
tight connection. Check visible
portion of wire har ness for damage.
Restart mower. If fault returns, return
mower to maintenance shed.
Left actuator did not reach position
44444
within 6 seconds. Shut mower off,
and remove key. Check grass
catcher for excessive weight. Restart
mower. If fault returns, return mower
to maintenance shed.
Center actuator did not reach
44444
position within 6 seconds. Shut
mower off, and remove key. Check
grass catcher for excessive weight.
Restart mower. If fault returns, return
mower to maintenance shed.
l If fault returns after shutting down and restarting mower, mowing can continu e with other
reels if reel enable switch for indicated reel is turned OFF.
en-45
7 LDU ERROR CODES
LDU Error MessageError Description
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes No Yes No Yes No Yes No
CHECK RIGHT
ACTUATOR
Right actuator did not reach posi tion
within 6 seconds. Shut mower off,
and remove key. Check grass
44444
catcher for excessive weight. Restart
mower. If fault returns, return mower
to maintenance shed.
7.4TRACTION & S T EER ING CONTROLLER ERROR CODES_________________________
Traction and steering contro ller error/fault codes displ ay
on the LDU as a four digit error code.
LDU Error CodeDescription
Software detected short circuit in
TRACTION
FAULT 2310
controller, cabling to motor or in
motor. Measured current is 50%
above the 2 min., rating current. Shut
STEERING
FAULT 2310
mower off, then restart. If fault
returns, mower must be towed back
to maintenance shed.
3WD TRACTION
FAULT 2310
Caution
LED
OnOff Yes NoYes NoYes No Yes No
44444
44444
44444
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
TRACTION
FAULT 2340
STEERING
FAULT 2340
3WD TRACTION
FAULT 2340
TRACTION
FAULT 3120
STEERING
FAULT 3120
3WD TRACTION
FAULT 3120
Hardware detected short circuit in
controller, cabling to motor or in
motor. Shut mower off, then restart. If
fault returns, mower must be towed
back to maintenance shed.
The DC Bus charging is not fini shed
within 10 seconds. Shut mower off,
then restart. If fault returns, mower
must be towed ba ck to mainten ance
shed.
44444
44444
44444
44444
44444
44444
en-46
LDU ERROR CODES 7
LDU Error CodeDescription
DC Voltage is above the High Trip
TRACTION
FAULT 3211
level. Shut mower off, then restart. If
fault returns, mower must be towed
back to maintenance shed.
STEERING
FAULT 3211
3WD TRACTION
FAULT 3211
DC Voltage is above the hardware
TRACTION
FAULT 3212
defined trip level. Shut mower off,
then restart. If fault returns, mower
must be towed ba ck to mainten ance
STEERING
FAULT 3212
3WD TRACTION
FAULT 3212
shed.
DC Bus voltage is below the Low
TRACTION
FAULT 3221
Trip Level. Shut mower off, then
restart. If fault returns, mower must
be towed back to maintenance shed.
STEERING
FAULT 3221
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes NoYes NoYes No Yes No
44444
44444
44444
44444
44444
44444
44444
44444
3WD TRACTION
FAULT 3221
TRACTION
FAULT 4210
STEERING
FAULT 4210
3WD TRACTION
FAULT 4210
TRACTION
FAULT 4310
STEERING
FAULT 4310
3WD TRACTION
FAULT 4310
Motor temperature is above 356° F
(180° C). Shut mower off and wait
ten minutes. Restart mower. If fault
returns, mower must be towed back
to maintenance shed.
Heatsink temperature is above 185°
F (85° C). Shut mower off and wait
ten minutes. Restart mower. If fault
returns, mower must be towed back
to maintenance shed.
44444
44444
44444
44444
44444
44444
44444
en-47
7 LDU ERROR CODES
LDU Error CodeDescription
15 V Supply voltage on the DSP
TRACTION
FAULT 5111
board is too low. Shut mower off,
then restart. If fault returns, mower
must be towed ba ck to mainten ance
STEERING
FAULT 5111
3WD TRACTION
FAULT 5111
shed.
5V Supply voltage on the DSP board
TRACTION
FAULT 5113
is too high or too low. Shut mower
off, then restart. If fault returns,
mower must be towed back to
STEERING
FAULT 5113
3WD TRACTION
FAULT 5113
maintenance shed.
The offset in the current
TRACTION
FAULT 5210
measurement is too high. The offset
is adjusted during power-up of the
drive. Shut mower off, then restart. If
STEERING
FAULT 5210
fault returns, mower must be towed
back to maintenance shed.
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes NoYes NoYes No Yes No
44444
44444
44444
44444
44444
44444
44444
44444
3WD TRACTION
FAULT 5210
TRACTION
FAULT 5410
STEERING
FAULT 5410
3WD TRACTION
FAULT 5410
TRACTION
FAULT 6210
STEERING
FAULT 6210
Current is above the error limit. Open
drain outputs disabled and drive is
tripped. Shut mower off, the n restart.
If fault returns, mower must be towed
back to maintenance shed.
Direction Error.
Traction fault: Shut mower off, then
restart. If fault returns, mower must
be towed back to maintenance shed.
Steering fault: Shut mower off.
Check steering proximity switches
for debris or obstruction. Restart
mower. If fault returns, mower must
be towed back to maintenance shed.
44444
44444
44444
44444
44444
44444
en-48
LDU ERROR CODES 7
LDU Error CodeDescription
Throttle Sensor Error. Shut mower
TRACTION
FAULT 6211
off, then restart, making certain
traction pedal is in neutral. If fault
returns, mower must be towed back
STEERING
FAULT 6211
to maintenance shed.
Reverse Alarm Test Failed. Shut
TRACTION
FAULT 6212
mower off, then restart. If fault
returns, mower must be towed back
to maintenance shed.
STEERING
FAULT 6212
Mechanical Brake Test failed. Shut
TRACTION
FAULT 6213
mower off, then restart. If fault
returns, mower must be towed back
to maintenance shed.
STEERING
FAULT 6213
Brake sensor error. Shut mower off,
TRACTION
FAULT 6214
then restart. If fault returns, mower
must be towed ba ck to mainten ance
shed.
STEERING
FAULT 6214
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes NoYes NoYes No Yes No
44444
44444
44444
44444
44444
44444
44444
44444
STEERING
FAULT 7310
STEERING
FAULT 7320
STEERING
FAULT 7321
STEERING
FAULT 7322
Speed Sensor feedback error. Shut
mower off, then restart. If fault
returns, mower must be towed back
to maintenance shed.
Center switch has no t reached cam
end within 6 seconds. Shut mower
off, then restart. If fault returns,
mower must be towed back to
maintenance shed.
The position error during the
calibration is greater than the error
window. Shut mower off, then restart.
If fault returns, mower must be towed
back to maintenance shed.
wheel angle and cam center switch
signal are not synchronized. Shut
mower off, then restart. If fault
returns, mower must be towed back
to maintenance shed.
44444
44444
44444
44444
en-49
7 LDU ERROR CODES
LDU Error CodeDescription
Reference generator not connected
STEERING
FAULT 7380
or short circuited. Shut mower off,
then restart. If fault returns, mower
must be towed ba ck to mainten ance
shed.
Difference between set value and
STEERING
FAULT 8010
actual value for curren t regulator are
above limit. Shut mower off, then
restart. If fault returns, mower must
be towed back to maintenance shed.
Difference between set value and
STEERING
FAULT 8020
actual value for position regulator are
above limit. Shut mower off, then
restart. If fault returns, mower must
be towed back to maintenance shed.
One or more of the motor cables are
STEERING
FAULT 8030
not connected. Shut m ower off, then
restart. If fault returns, mower must
be towed back to maintenance shed.
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes NoYes NoYes No Yes No
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STEERING
FAULT 8040
STEERING
FAULT 8050
TRACTION
FAULT 8100
STEERING
FAULT 8100
3WD TRACTION
FAULT 8100
8040 Difference between set value
and actual value for speed regulator
are above limit. Shut mo wer off, then
restart. If fault returns, mower must
be towed back to maintenance shed.
8050 The estimated speed is above
limit. Shut mower off, then restart . If
fault returns, mower must be towed
back to maintenance shed.
Controller has not received an
expected CANopen message within
the time out time. Shut mower off,
then restart. If fault returns, mower
must be towed ba ck to mainten ance
shed.
Only used on 2WD mowers with the following serial
numbers:
LDU Error CodeDescription
OLM internal temperature high.
OLM
WARNING 05
Restart mower. Continue with normal
operation. Notify maintenance
personnel at end of shift.
OLM detects a short circuit to ground
OLM
WARNING 11
in resistor 1. Resistor is no longer
operable. Check wiring and/or
resistor. Restart mower. Continue
with normal operation. Notify
maintenance personnel at end of
shift.
OLM detects no current through
OLM
WARNING 12
resistor 1. Check w iring/resistor and
resistor bank ground connection.
Restart mower. Continue with normal
operation. Notify maintenance
personnel at end of shift.
OLM detects less current than
expected through r esistor 1. Inspect
wiring and connectors . Resistor may
be degraded. Restart mower.
Continue with normal operation.
Notify maintenance pe rsonnel at end
of shift.
OLM detects a short circuit to ground
in resistor 2. Resistor is no longer
operable. Check wiring and/or
resistor. Restart mower. Continue
with normal operation. Notify
maintenance personnel at end of
shift.
OLM detects no current through
resistor 2. Check w iring/resistor and
resistor bank ground connection.
Restart mower. Continue with normal
operation. Notify maintenance
personnel at end of shift.
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7 LDU ERROR CODES
LDU Error CodeDescription
OLM detects less current than
OLM
WARNING 23
expected through r esistor 2. Inspect
wiring and connectors . Resistor may
be degraded. Restart mower.
Continue with normal operation.
Notify maintenance pe rsonnel at end
of shift.
OLM detects a short circuit to ground
OLM
WARNING 31
in resistor 3. Resistor is no longer
operable. Check wiring and/or
resistor. Restart mower. Continue
with normal operation. Notify
maintenance personnel at end of
shift.
OLM detects no current through
OLM
WARNING 32
resistor 3. Check w iring/resistor and
resistor bank ground connection.
Restart mower. Continue with normal
operation. Notify maintenance
personnel at end of shift.
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes NoYes NoYes No Yes No
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OLM
WARNING 33
OLM
WARNING 41
OLM
WARNING 42
OLM
WARNING 43
OLM detects less current than
expected through r esistor 3. Inspect
wiring and connectors . Resistor may
be degraded. Restart mower.
Continue with normal operation.
Notify maintenance pe rsonnel at end
of shift.
OLM detects a short circuit to ground
in resistor 4. Resistor is no longer
operable. Check wiring and/or
resistor. Restart mower. Continue
with normal operation. Notify
maintenance personnel at end of
shift.
OLM detects no current through
resistor 4. Check w iring/resistor and
resistor bank ground connection.
Restart mower. Continue with normal
operation. Notify maintenance
personnel at end of shift.
OLM detects less current than
expected through r esistor 4. Inspect
wiring and connectors . Resistor may
be degraded. Restart mower.
Continue with normal operation.
Notify maintenance pe rsonnel at end
of shift.
Hybrid engine con troller error/fault cod es display on the
LDU as a two digit error code.
LDU Error CodeDescription
Pack Voltage too high. Engine speed
GENERATOR
FAULT 14
is set to idle. Restart mower.
Continue with normal operation.
Notify maintenance pe rsonnel at end
of shift.
Pack Voltage too low. Engine speed
GENERATOR
FAULT 15
is set to idle. Restart mower.
Continue with normal operation.
Notify maintenance pe rsonnel at end
of shift.
Generator temperature greater than
GENERATOR
FAULT 21
266° F (130° C). Eng in e s peed is s et
to idle. Restart mower. Continue with
normal operation. Notify
maintenance personnel at end of
shift.
Generator temperature greater than
GENERATOR
FAULT 22
212° F (100° C) or rectifier
temperature greater than 176° F (80°
C). Generator derates. Shut mower
down and wait ten minutes. Restart
mower. If fault returns, return mower
to maintenance shed.
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes NoYes NoYes No Yes No
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GENERATOR
FAULT 23
GENERATOR
FAULT 31
GENERATOR
FAULT 54
GENERATOR
FAULT 55
Throttle actuator Fault. Engine
speed is set to idle/spring return.
Restart mower. If fault returns, return
mower to maintenance shed.
Rectifier temperature greater than
212° F (100° C) for 3 seconds.
Generator derates. Restart mower.
Continue with normal operation.
Notify maintenance pe rsonnel at end
of shift.
Pack voltage sensor greater than 70
VDC for 3 seconds. Engine shut
down. Restart mower and return to
maintenance shop
Pack voltage sensor 2VDC for 2
seconds. Engine speed set to
idle.Return mower to maintenance
shop.
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en-53
7 LDU ERROR CODES
LDU Error CodeDescription
Generator temperature greater than
GENERATOR
FAULT 56
340° F (171° C). Eng in e s peed is s et
to idle.Shut mower down and wait
ten minutes. Restart mower. If fault
returns, return mower to
maintenance shed.
Generator temperature less than
GENERATOR
FAULT 57
-20° F (-29° C). Engine speed is s et
to idle. Allow engine to run until
generator warms up.
Rectifier temperature greater than
GENERATOR
FAULT 58
340° F (171° C). Eng in e s peed is s et
to idle.Shut mower down and wait
ten minutes. Restart mower. If fault
returns, return mower to
maintenance shed.
Rectifier temperature less than -20°
GENERATOR
FAULT 59
F (-29° C). Engine speed is set to
idle. Allow engine to run until
generator warms up.
Caution
LED
Alarm
Sounding
Engine
Stop
Traction
Stop
Mow Stop
OnOff Yes NoYes NoYes No Yes No
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GENERATOR
FAULT 88
Current sense fault. Current less
than 20A when engine above 2900
rpm. Restart mower. Return to
maintenance shed.
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TROUBLESHOOTING 8
8 TROUBLESHOOTING
8.1 TROUBLE SHOOTIN G _______________________________________ __ ___ __________
ProblemPossible Cause/Items to CheckAdditional Items to Check
Key switch ON - No powe r
to LDU
Key switch ON - No powe r
to MCU or RCU
Key switch START Engine won't crank
48VDC Battery or 48VDC Buffer Battery not
connected or discharged.
No 12V power to LDU. Overcurrent protection device in PDU may be tripped. Check
for open connection or shorted wire to GND
for LDU 48V power.
Main Contactor not on due to circuit breaker
tripped.
Fault Code on LDUReview any fault codes and take appropriate
Overcurrent protection device in LDU
tripped. Check for open connection or
shorted wire to battery for main contactor
coil power.
Note: Only 1 start sequence per Ignition on
is allowed. Must recycle keyswitch for
another start sequence.
12VDC Battery not connected or discharged.
Operator not on seatOperator must be seated to start engine.
Check MCU LED's #2 and #3 to see if they
are on.
Ensure a Genset program is selected.
Check MCU LED #18 on for Gas, or #17 on
for Diesel.
Overcurrent protection device in LDU
tripped. Check for open connection or
shorted wire to battery for 12V contactor coil
power.
Overcurrent protection device in MCU
tripped. Check for open connection or
shorted wire to GND for Start relay coil
power.
No power to genset logic. Overcurrent protection device in PDU may be tripped.
Check for open connection or shorted wire
to GND for genset 12V power.
No power to starter from start relay contact.
Overcurrent protection device in PDU may
be tripped. Check for open connection or
shorted wire to GND for Start relay output.
No 12V power to MCU. Overcurrent protection device in PDU may be tripped. Check
for open connection or shorted wire to GND
for MCU 12V power.
Fault Code on LDUReview any fault codes and take appropriate
No CAN communication.Check that three armrest connectors for
Check battery connections and voltage.
Cycle power once corrected.
Check to see if circuit breaker 4 is tripped.
action.
Check battery connections.
If not on check to see if circuit breaker 6 is
tripped.
If neither are on check engine harness
connections.
Check that three armrest connectors for
tight connection.
Cycle power once corrected.
Cycle power once corrected.
Cycle power once corrected.
action.
tight connection. Check to make sure CAN
resistor terminator has tight connection
en-55
8 TROUBLESHOOTING
No Glowplug operationEnsure Diesel Genset is selected. Check
MCU LED #17 should be on.
Check MCU LED #6 should be on when
glowplugs should be on (i.e. Pre-glow, during cranking, and post-glow)
Overcurrent protection device in MCU
tripped. Check for open connection or
shorted wire to GND for Glow Plug relay coil
power.
No 12V power to MCU. Overcurrent protection device in PDU may be tripped. Check
for open connection or shorted wire to GND
for MCU 12V power.
Fault Code on LDUReview any fault codes and take appropriate
No CAN communication.Check connections.
Engine cranks but won't
start (Diesel)
Engine cranks but won't
start (Gas)
No Traction MovementEnsure Machine was started. Check LDU
Ensure Diesel Genset is selected. Check
MCU LED #17 should be on.
Check for Fuel Solenoid power. Check MCU
LED #2 should be on.
Fault Code on LDUReview any fault codes and take appropriate
Check to see if Fuel Solenoid Pulls and
Holds. Check MCU LED'S #4 for Pull on for
0.5 sec then #5 on for Hold.
No 12V power to MCU. Overcurrent protection device in PDU may be tripped. Check
for open connection or shorted wire to GND
for MCU 12V power.
Ensure Gas Genset is selected. Check MCU
LED #18 should be on.
Green Lightning Bolt for steady on.
Fault Code on LDUReview any fault codes and take appropriate
Traction Contactor is off. Check MCU LED #
8 should be on when contactor is on. If off
see next item.
Check if Seat Switch is functioning. Check
MCU LED #24 should be on when on seat
and off when off seat.
No CAN communication.Check connections.
Automatic Parking Brake not releasingManually release parking brake, then
Overcurrent protection device in PDU
tripped. Check for open connection or
shorted wire to GND for throttle pedal power,
TCU logic power, and park brake power.
Overcurrent protection device in MCU
tripped. Check for open connection or
shorted wire to battery for traction contactor
coil power.
Check engine harness connections.
If not on check to see if circuit breaker 6 is
tripped.
Cycle power once corrected.
action.
Check harness connections.
If not on check to see if CB 6 is tripped
action.
Overcurrent protection device in MCU
tripped. Check for open connection or
shorted wire to GND for Pull and Hold solenoids power.
Cycle power once corrected.
Check engine harness connection.
If flashing initiate start sequence.
action.
Overcurrent protection device in MCU
tripped. Check for open connection or
shorted wire to battery for traction contactor
power.
Check switch and harness connection.
remove release screws. Cycle power.
Cycle power once corrected.
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TROUBLESHOOTING 8
No steering (Electric steering system)
Manual Actuator Mode not
working
One or more reel motors
won't run
Reel motor temperature or
current high when mowing.
Actuators raise and motors
shut off while mowing
Steering wheel has no
resistance
Headlights don't turn onOvercurrent protection device in PDU
Genset overheating.Genset fan not running. Overcurrent protec-
Check if Seat Switch is functioning. Check
MCU LED #24 should be on when on seat
and off when off seat.
SCU does not have power.Check to see if circuit breaker 5 is tripped.
Fault Code on LDUReview any fault codes and take appropriate
Overcurrent protection device in PDU
tripped. Check for open connection or
shorted wire to GND for SCU logic power.
Proximity switches dirty.Clean all dirt or debris from proximity switch.
Park brake off. Check LDU Park Brake LED
should be on.
No CAN communication.Check connections.
Fault Code on LDUReview any fault codes and take appropriate
Mow switch is in ON position.Ensure Mow switch is in OFF position.
Mow switch is in OFF position. Ensure Mow switch is in ON position.
Reel enable switches are in OFF position.Ensure to enable reels.
Machine not moving. (applicable if FOC is
not zero)
Fault Code on LDUReview any fault codes and take appropriate
No power to reels. When actuators are down
check RCU LED's #8 for Left, #14 for Center, #7 for right should be on.
Excessive amount of grass being cut.Reduce mower speed, increase FOC, or
Low Battery Power. LDU-Red 48V Battery
LED will be on.
Reel or Actuator Fault. LDU-Yellow Caution
LED will be on.
Overcurrent protection device in PDU
tripped. Check for open connection or
shorted wire to GND for Lord brake, Lord
protection diode.
tripped. Check for open connection or
shorted wire to GND for headlight(s).
tion device in PDU may be tripped. Check
for open connection or shorted wire to GND
for genset fan 12V power.
Check switch and harness connection.
action.
Cycle power once corrected.
Check for obstructions that may interfere
with switch operations.
Cycle power.
action.
Reel motors should come on when machine
starts moving forward.
action.
Check PDU circuit breakers for tripped: CB3
for left, CB2 for center, CB1 for right.
change height of cut.
Recharge Batteries.
Review fault codes to determine which reel
or actuator is faulted.
Cycle power once corrected.
Cycle power once corrected.
Cycle power once corrected.
en-57
World Class Quality, Performance And Support
Equipment from Jacobsen is built to exacting
standards ensured by ISO 9001 and ISO 14001
registration at all of our manufacturing locations.
A worldwide dealer network and factory trained
technicians backed by Genuine Jacobsen Parts
provide reliable, high-qua li ty pr odu ct sup por t.
Jacobsen, A Textron Company
11108 Quality Drive, Charlotte,
NC 28273, USA
www.Jacobsen.com
800-848-1636
When Performance Matters.
Ransomes Jacobsen Limited
West Road, Ransomes Europark, Ipswich, IP3 9TT
English Company Registration No. 1070731
www.ransomesjacobsen.com
+44 (0) 1473 270000
™
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