Lightweight Fairway Mower
67978 – LF 550™, 2WD
4229042-GB-Rev B
Dealer
™
67979 – LF 550
, 4WD
67981 – LF 570™, 2WD
67982 – LF 570™, 4WD
™
67980 – LF 550
Turbo, 4WD
67983 – LF 570™ Turbo, 4WD
WARNING
WARNING: If incorrectly used this machine can cause severe
injury. Those who use and maintain this machine should be
trained in its proper use, warned of its dangers and should
read the entire manual before attempting to set up, operate,
adjust or service the machine.
This manual is designed to assist dealer
personnel with the proper set up and
preparation of the equipment prior to
delivery to the customer. You may wish to
keep a copy in your customer file.
Do Not Remove the Safety & Operation
Manual or Parts & Maintenance Manual
from the mower.
For additional information not included in
this manual, refer to your office copy of:
• The Safety & Operation Manual
• The Parts & Maintenance Manual
Use the pre-delivery checklist provided on
the inside back c over of this manual. You
may wish to provide a copy to the
customer upon delivery of the unit.
When Performance Matters.
™
GB
United
Kingdom
11524 WILMAR BLVD,
CHARLOTTE, NC 28273
®
kg kW
1-800-848-1636 (US)
PRODUCT OF U.S.A.
A Textron Company
FOREWORD
This manual contains safety and operating instructions
for your new Jacobsen mower. This manual should be
stored with the equipment for reference during operation.
Before you operate your mowe r, you and each operator
you employ should read the manual carefully in its
entirety. By following the safety, operating, and
maintenance instr uctions , 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.
CONTENTS
Contents
CONTENTS
1SAFETY
1.1 Operating Safety . . . . . . . . . . . . . . . . . . . . . 3
1.2 Important Safety Notes . . . . . . . . . . . . . . . . .4
2 CONTROLS
2.1 Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Armrest Controls . . . . . . . . . . . . . . . . . . . . . .7
2.3 Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 LCD Display Unit (LDU) . . . . . . . . . . . . . . .10
2.4.1 Indicator Lights . . . . . . . . . . . . . . . . . . . . . . 10
2.4.2 Alarm Codes . . . . . . . . . . . . . . . . . . . . . . . .11
2.4.3 Diagnostic Screens . . . . . . . . . . . . . . . . . . .11
2.4.4 Operator Mode . . . . . . . . . . . . . . . . . . . . . . 11
2.4.5 Maintenance Mode . . . . . . . . . . . . . . . . . . . 12
The serial plate is located on the right rear frame rail.
Jacobsen recomm ends y ou recor d these nu mbers bel ow
for easy reference.
4 ADJUSTMENTS
4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Bedknife-To-Reel . . . . . . . . . . . . . . . . . . . . 17
4.3 Bedknife Adjustment . . . . . . . . . . . . . . . . . 18
4.4 Cutting Height . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Flash Attach™ . . . . . . . . . . . . . . . . . . . . . . 19
4.6 Down Pressure . . . . . . . . . . . . . . . . . . . . . . 19
4.7 Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.8 Front Reel Limit Switch . . . . . . . . . . . . . . . 20
4.9 Steering Toe-In . . . . . . . . . . . . . . . . . . . . . 21
4.10 Armrest Height Adjustment . . . . . . . . . . . . 21
4.11 Armrest Pivot . . . . . . . . . . . . . . . . . . . . . . . 22
4.12 Torque Specification . . . . . . . . . . . . . . . . . 23
5 TROUBLESHOOTING
5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3SET-UP
3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.2 Initial Inspection . . . . . . . . . . . . . . . . . . . . . 14
3.3 Reels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.4 Operating Checks . . . . . . . . . . . . . . . . . . . . 15
3.5 Interlock System . . . . . . . . . . . . . . . . . . . . . 16
These are the original instructions verified by
Jacobsen A Textron Company
© Copyright 2011, Textron Inc. “All rights r eserv ed, includ ing the
right to reproduce this material or portions thereof in any form.”
2
Litho In U.S.A. 2-2011
6 LUBRICATION
6.1 Lubrication Chart . . . . . . . . . . . . . . . . . . . . 25
7NOTES
Proposition 65 Warning
This product contains or emits
chemicals known to the State of
California to cause cancer and birth
defects or other reproductive harm.
SAFETY 1
!
1 Safety
1.1 OPERATING SAFETY _________ __ __ ___ __ ________________ ___ ________________ _
WARNING
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 machine.
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 cannot read English it is the owner’s
responsibility to explain the mat erial containe d in this
manual to them.
3. Learn the proper use of the machine, the location and
purpose of all the controls and gauges before you
operate the equipment. Working with unfamiliar
equipment can lead to accidents.
4. Never allow anyone to operate or service the machine
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 devices to protect your head, eyes, ears, hands,
and feet. Operate the machine only in daylight or in
good artificial light.
6. Evaluate the terrain to determine what accessories and
attachments are needed 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 equipment will be used.
Pick up all the debris you can find before operating.
Beware of overhead obstructions (low tree limbs,
electrical wires, etc.) and also underground obstacles
(sprinklers, pipes, tree roots, etc.). Enter a new area
cautiously. Stay alert for hidden hazards.
9. Never direct discharge of material toward bystanders,
nor allow anyone near the machine while in operation.
The owner/operator can prevent and is responsible for
injuries inflicted to themselves, to bystanders, and
damage to property.
10. Do not carry passengers. Keep bystanders 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 the exhaust fumes can 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 c lean. Allow the engine to cool before
storing and always remove the ignition key.
17. Disengage all drives and engage parking brake switch
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 machine up and down the face of slopes
(vertically), not across the face (horizontally).
21. To prevent tipping or loss of control, 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).
Never use a seat belt when operating mowers
without a ROPS.
Accessory operator protective structures will
continue to be offered for all equipment currently
covered. This allows for the outfitting of any
machines without previous ROPS installations or
replacement of damaged structures.
23. Keep legs, arms, and body inside the seating
compartment while the vehicle is in motion.
24. Disconnect battery and controller electrical connectors
before performing any welding on this mower.
This machine is to be operated and maintained as specified in this manual and is intended for the professional
maintenance of specialized turf grasses. It is not intended for use on rough terrain or long grasses.
3
1 SAFETY
!
!
1.2 IMPORTANT SAFETY NOTES________________________________________________
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 starting unless
the parking brake sw itch is E ngaged, mow swi tch is OF F, and traction pe dal
is in Neutral. T he system will stop the en gine if th e operator lea ves the seat
without engaging the parking brake switch or setting the mow switch OFF .
NEVER operate mower unless the Interlock System is working.
WARNING
1. Before leaving the operator’s position for any reason:
a. Return traction pedal to Neutral.
b. Disengage all drives.
c. Lower all implem ents to the ground.
d. Engage parking brake switch.
e. Stop engine 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 machine.
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 machine 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.
4
CONTROLS 2
Read Manual
High Low
Engine Throttle
Mower Rotation
2-WD 4-WD
Lock Unlock
Forward Reverse
Drive
Travel
Cruise Control
Off Run
Engine
Start
Parking Brake
Forward
(Cut)
Reverse
(Backlap)
Coolant
Temperature
Fuel
Mowers
Lower Raise
Work Lights
Hour Meter
Oil Level Switch
On Off/Test
Engine Oil
Pressure
Glow
Plug
Hydraulic
Oil Filter
Battery
Charge
Warning Lights
Hydraulic Oil
Level
D
!
2 CONTROLS
2.1 ICONS ________________________________________ ___________________________
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 the controls and gauges before operating this mower.
WARNING
5
2 CONTROLS
!
4131663
A
E
B
F
J
C
G
D
H
K
L
M
N
P
R
W
S
T
U
V
R
A LCD Display Unit (LDU)
B Mow Switch
C Parking Brake Switch
D
Cruise Control Switch
E Ignition Switch
F Horn Switch
G
Light Switch
H Joystick
J Fuel Cap
K Air Cleaner Indicator
L Backlap Switch
M Steering Tilt Lever
N Traction Pedal - Forward
P Traction Pedal - Reverse
R Seat Adjustment
S Hydraulic Oil Cap
T Controller/Fuses
U Engine Throttle Lever
V LDU Push Button
W Access Panel Latch
6
CONTROLS 2
A
E
B
F
C
G
D
H
2.2 ARMREST CONTROLS _____________________________________________________
A. LCD Display Unit (LDU)
Used to display and set operating conditions. See
Section 2.4.
B. Mow Switch
Enables and disables the reels, and switches
lift system between manual mode and mow
mode. Pull up on the knob the enable the
mowers, limit mower s peed to max mow speed, and
change the lift system to mow mode . Push down on
the knob to disable the mowers, enable transport
speeds, and change lift system to manual mode.
NOTE: Mower will not start with mow switch in the
ON position.
C. Parking Brake Switch
To engage parking brake, depress rear of
switch. Parking brake light on LDU will turn on.
Normal reel operation is disabled with parking
brake engaged.
To disengage parking brake, depress front of
switch. Parking brake light on LDU will turn off.
NOTE: Mower will not start with parking brake switc h
in the Disengaged position.
D. Cruise Control Switch
When switched ON the cruise control will
maintain mower speed without operator’s foot on
traction pedal. Cruise will unlock when switched
OFF, if operator leaves seat, if parking brake
switch is switched on, or traction pedal is
depressed in either direction.
turn lights OFF. Switch is not active if ignition switch (E)
is not in RUN position.
H. Reel Raise/Lower Joystick
The mower lift lever raises and lowers the mowers and
operates in either automatic or manual mode. Push
lever forward to lower mowers, pull back to raise
mowers.
Manual Mode - Set mow switch (B) in its OFF (down)
position. In this position all mowers will raise or lower
while pressure is applied to the lift lever.
Automatic Mode - Set mow switch (B) in its ON (up)
position. In automatic mode the mowers will lower and
start automatically with a momentary forward movement
of the lift lever. In this mode mowers will only raise to a
“crosscut” position with a momentary backward
movement of the lift lever.
To raise mowers to their transport position, hold lever
until mowers are fully raised.
NOTICE
While in an Automatic Mode, the lift or lower cycle lasts
approximately 3 seconds. Moving the lift lever in the
opposite direction during the cycle will turn all mowers
off, and manual mode will start for the position selected.
Joystick is also used to navigate and change values in
Maintenance Mode. See Section 2.4.5.
E. Ignition Switch
Ignition switch has four positions, OFF, RUN, GLOW
PLUG, and START.
OFF Position - Power to mower is turned off.
RUN Position - Controller program is running and
input and output circuits are being monitored.
GLOW PLUG Position - Controller follows the
variable timing for pre-glow.
START Position - Used to start the engine. See
Safety & Operation Manual.
F. Horn Switch
Used to sound the audible alarm. Switch is not
active if ignition switch (E) 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
Figure 2A
7
2 CONTROLS
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4131663
!
N
P
!
2.3 CONTROLS ______________________________________________________________
J. Fuel Cap
Fill fuel tank with fresh, clean, #2 low or ultra low sulfur
diesel fuel, minimum Cetane Rating of 45.
K. Air Cleaner Indicator
Indicates condition of air cleaner on engine. Clean or
replace air filter when red band appears in clear window
of indicator. See Parts & Maintenance Manual.
L. Backlap Switch
The backlap switch allows the mowers to
rotate in reverse for backlapping.
Forward - For normal operation
(mowing) the switch must be set to the
OFF (0) position.
Reverse - When backlapping, the cutting
units must be operated in the reverse
direction. Set switch to the ON (1)
position.
When backlapping, the parking brake switch must be
Engaged and backlap switch (K) must be set to
REVERSE. See Parts & Maintenance Manual.
M. Tilt Steering Lever
Pull lever up to release steering column. Tilt
column up or down to position desired.
Release lever to lock steering column in
place.
R. Seat Adjustment
Pull left side lever out to adjust seat forward or
backward. To adjust spring tension under seat turn
adjusting knob on front of seat.
S. Hydraulic Oil Cap/Dipstick
Fill to mark on dipstick using clean hydraulic fluid while
machine is cool. Do not overfill.
T. Controller/Fuses
The controller is located under the rear hood directly
behind the operator’s seat. It is equipped with two lights,
power and communication. See Parts & Maintenance
Manual.
Two spade type fuses are located on the controller. To
replace fuses remove the access panel.
CAUTION
Never adjust steering while mower is moving. Stop
unit and engage parking brake switch before
adjusting.
N. Traction Pedal - Forward
Press front of pedal down for forward travel. Release
pedal to slow mower and stop.
NOTICE
Traction system will be disabled and alarm will sound if
traction pedal is depressed in either direction with
parking brake switch engaged. Return traction pedal to
Neutral position, and disengage parking brake switch to
resume normal operation.
P. Traction Pedal - Reverse
Press rear of pedal down for reverse travel. Release
pedal to slow mower and stop. Allow mower to come to
a complete stop before reversing directions.
CAUTION
Service to the electrical system must be performed by a
trained technician. Before replacing fuses turn mower off
and remove key from ignition.
U. Engine Throttle
Controls engine speed. Run machine at full throttle
during normal machine operation.
V. LDU Push Button
Used to cycle through LDU screens. Also used to set
values in Maintenance Mode.
W. Access Panel Latch
Lift latch handle and lift access panel off mower to
access pumps and other hydraulic components for
service. Never operate mower without access panel in
place, and securely latched.
See Section 2.4
8
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.
CONTROLS 2
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 pr event the risk of burns o r fire do not replace 10
amp fuse with a higher amperage rating fuse.
9
2 CONTROLS
!
!
2.4 LCD DISPLAY UNIT (LDU) __________________________________________________
The LDU displays current functional values for the
operation of the mower, has indicator l ights, and sounds
audible warning alerts. The L DU operates in one of two
modes, Operator Mode (Default) and Maintenance
Mode. Use of Maintenance Mode requ ires a four digit pin
number. Refer to Section 2.4.5 for inst ru c ti ons to ac cess
the Maintenance mode, and more detailed LDU
information.
Press the black button (V) to move thr ough the display
list.
JACOBSEN
VERSION X.XX
!
V
Figure 2B
2.4.1 Indicator Lights ___________________
The LDU has eight indicator lights to indicate system
functions.
Coolant Temperature Light: Red coolant
temperature light lo cated on left side of the
LDU indicates an coolant temperature
above 230° F (110° C). Shut down unit
immediately. Remove debris such as
leaves and grass clippings that may be
restricting air flow thro ugh rear screen and
radiator. If engine continues to run hot,
return mower to a service area.
CAUTION
Diesel engine coolant i s under pressure . Turn engine
off and allow fluid to cool before checking fluid level or
adding coolant to radiator.
Parking Brake Light: Red parking brake
light located on right side of the LDU
indicates the parking brake switch is
engaged. Light will flash when automatic
parking brake is engaged.
Hydraulic Oil Level Light: Red hydraulic
oil level light located on right side of the
LDU indicates a low fluid level in the
hydraulic tank. Shut mower down
immediately. Visually inspect mower for
obvious signs of l eaks a round connec tions,
hoses, and hydraulic components. Return
mower to service area for maintenance.
Battery Light: Red battery light located on
left side of the LDU indicates the engine
alternator is not producing proper voltage.
Return unit to service area as soon as
possible.
charging system.
Glow Plug Light: Yellow glow plug light
located on left side of the LDU indicates the
diesel engine glow plugs are energized.
Engine Oil Pressure Light: Red engine oil
pressure light located on left 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
Inspect battery and battery
Inspect oil level in
.
CAUTION
Hydraulic fluid is under pressure. Shut mower down
and allow fluid to cool befor e checking fluid level, or
adding oil to hydraulic tank.
Hydraulic Oil Filter Light: Yellow oil filter
light located on right side of the LDU
indicates the hydraulic filters need to be
replaced. Return mower to service area as
soon as possible and replace filters.
Fault Light: Yellow fault light located on
right side of the LDU indicates the controller
!
system has detected a fault. See fault
message displayed on LCD.
10
CONTROLS 2
OIL FILTER
PRESSURE
HIGH ENGINE
TEMPERATURE
LOW BATTERY
VOLTAGE
LOW HYDRAULIC
FLUID LEVEL
PEDAL AND
BRAKE ON
TEMP SENSOR
OUT OF RANGE
CAN COMM
ERROR
BRAKE RELEASE
FAULT
GLOW PLUG
FAULT
FUEL HOLD
FAULT
MOW SOLENOID
FAULT
LIFT SOLENOID
FAULT
LOWER
SOLENOID FAULT
BACKLAP
SOLENOID FAULT
STARTER RELAY
FAULT
EDC COIL
FAULT
PEDAL OUT
OF RANGE
Diagnostic Displays
2.4.2 Alarm Codes_____________________
In addition to the lights on the LDU, there are eight
screen displays that are used to alert the operator or
mechanic of a problem the needs to be corrected.
Figure 2C
Low Oil Pressure screen is shown, a larm sounds,
reels stop and rai se to f ull up po si tio n, a nd e ngi ne oil
pressure light turns on if engine oil pressure drops
below a safe operating level. Shut mower down
immediately.
Hydraulic Oil Filter screen is shown and reels stop
and raise to full up pos ition when filters need to b e
replaced. Return mower to service area as soon as
possible and replace filters.
High Engine Temperature screen is shown, alarm
sounds, reels s top and raise to full up position, and
coolant temperature light turns on when coolant
temperature rises abo ve 220° F (110° C). Shut down
unit immediately. Remove debris such as l eaves an d
grass clippings that may be restricting air flow
through rear screen and radiator.
Low Battery Voltage screen is shown when system
voltage drops below 12 Volts DC. If screen does not
turn off once engine starts, or battery l ight is a lso on,
check the battery charging system.
Inspect oil level in engine.
2.4.3 Diagnostic Screens________________
As an aid in troubleshooting, the following screens appear if
an open circuit or short circuit is detected on the indicated
output.
Figure 2D
2.4.4 Operator Mode ___________________
When ignition switch is turne d to the RUN position, the
alarm will sound and all indi cator lights will be on for one
second.
Operator mode is used by the operator to view engine
operating hours, mow switch status, and brake switch
status. The LDU will rotate through the screens every 3
seconds.
Displays start-up
screen
JACOBSEN
LDU–A MCU–A
Low Hydraulic Fluid Level screen is shown, ala rm
sounds, reels s top and raise to full up position, and
oil level light turns on when hydraulic fluid level in
tank is low. Visually inspect mower for obvi ous signs
of leaks around connections, hoses, and hydraulic
components.
Pedal and Brake On screen is shown, and alarm
sound, when traction pedal is depressed in either
direction with parking brake sw itch engaged. Return
traction pedal to Neutral position, and disengage
parking brake switch before attempting to drive
mower.
Displays engine
operating hours
Displays engine
coolant temperature
ENGINE HOURS
000000.0
ENGINE TEMP
120F 50C
Figure 2E
11
2 CONTROLS
2.4.5 Maintenance Mode
Maintenance Mode is used by the superintendent to set
and adjust functional va lue s for the mow er. LCD displays
available in Mainte nance Mode are, calibrate ped al, set
max mow speed, set travel speed, and set reverse
speed.
To ent er Maintenance Mode, turn key to RUN posit ion.
when hours screen is on the display, press black button
(J) once. The Enter Pin? scr een will be on the display.
Use the joystick (H) to change value to YES and push
black button. Use the joystick (H) to increase or
decrease, and the black button (J) to enter the digits for
the Mechanic Mode pin.
NOTE: The default PIN for Mainten ance Mode is 6789.
Operator must be on seat, parking brake switch
Engaged, mow switch OFF, and traction pedal in N eutral
to enter Maintenance Mode.
NOTE: The Mainte nance Mode PIN can be custo mized
to a setting of your choice. Please contact your Jacobsen
Dealer or Jacobsen Technical Support (1800-848-1636
Option 2) for complete instructions.
Travel Speed: To set the maximum travel speed, p ress
forward or backward on the j oystick (H) until the set max
speed screen is on the LCD display. Press the black
button (J) to enter set mod e. Pull back on th e joystick to
raise or push forward on joystick to lower the maximum
mow speed to the desi red speed. P ress the bl ack button
to set speed.
Maximum travel spee d is adjustable between 3 an d
10 MPH (4.8 and 16.1 kph), in 0.5 MPH (0.8 kph)
increments. Factory default is 12 MPH.
Mow Speed: To set the maximum mow speed, press
forward or backward on the j oystick (H) until the set max
mow speed screen is on the LCD display. Press the black
button (J) to enter set mod e. Pull back on th e joystick to
raise or push forward on joystick to lower the maximum
mow speed to the desi red speed. p ress the black b utton
to set speed.
Maximum mow speed is adju stable between 3 and 8
MPH (4.8 and 12.8 kph), in 0.5 MPH (0.8 kph)
increments. Factory default is 8 MPH.
Cruise Control: To enable or disable cruise control
function, press for ward or backward on the joystic k (H)
until one of the Cruise Control screens is on the LCD
display. Press the black button (J) to toggle display
between Enabled and Disabled.
Traction Mode: To set th e traction mode, press forwar d
or backward on the joystick (H) until on e of the traction
configuration setting screens is on the LCD display.
Press the black button (J) to toggle between traction
mode on and off.
Units Selection: To set the units displayed on the LDU,
press forward or backward on the joystick (H) until the
units setting screen is on the LCD display. Press the
black button (J) to toggle between English or Metric units.
Factory Reset: To perform a factory reset, press forward
or backward on the joystick (H) until the factory reset
screen is on the LCD dis play an d press the blac k button .
On the reset screen, us e the joystick to toggle between
YES and NO. Press black button to enter selection.
The factory reset changes units to English, max
travel speed to 10 MPH, m ax mow spe ed to 7 MPH,
traction mode ON, and cruise enabled.
Engine Hours: To display engine hours, press forward or
backward on the joystick (H) until the engine hours
screen is on the LCD display..
Maintenance Hours: To display or reset maintenance
hours counter, press forward or b ackward on the joys tick
(H) until the maintenance hours screen is on the LCD
display. To reset maintenance hours, press the black
button. On the reset screen, use the joystick to toggle
between YES and NO. Press black button to enter
selection.
Engine Temperature: To display engine coolant
temperature, press forward or backward on the joystick
(H) until the engine temperature screen is on the LCD
display..
Switch Status: Displays the current switch settings and
is used to diagnose switch problems. A status of 0
indicates the switch is in the OFF position. A status of 1
indicates the switch is in the ON position. Check the
wiring and operation of any swi tch that is not displaying
the correct status.
The Switches are brok en up into three sets of numbers,
with a gap between each set.
The first set of numbers displays the status of the
traction pedal (0=Neutral), reel level switch, seat
switch, and backlap switch.
The second set of numbers displays the status of the
cruise control switch, brake switch, and starter
switch.
The third set of numbers displays the status of the
mow switch, horn switch, and head light switch.
12
Calibrate Pedal: To calibrate the traction pedal, press
S
T
forward or backward on the jo ys ti ck (H) until the calibrat e
pedal screen is on the LCD display. With traction pedal in
Neutral, press the black button (J) to enter set mode.
NOTICE
Before accepting, and moving to the next screen, check
value listed on bottom of display. Maximum value that will
be accepted by the controller is 216, for both the forward
and reverse setting. If value is greater than 216, check
pedal for proper stop adjustment before continuing.
Press traction pedal all the way in the forward direc tion
and check value displayed. Adjust forward pedal stop (S)
until value displ ayed is between 20 0 and 20 5, and p ress
black button (J).
Press traction pedal all the way in the reverse dir ection
and check value disp lay ed. Adjust revers e pe dal st op (T)
until value displ ayed is between 20 0 and 20 5, and p ress
the black button (J). Pedal calibration is complete.
CONTROLS 2
Revision Level: To display current software revision
levels for the LDU and MCU, press forward or backward
on the joystick (H) until the revision level screen is on the
LCD display..
Exit Maintenance Mode: To exit Maintenance Mode,
press forward or backward on the joystick (H) until the
exit maintenance mode screen is on the LCD display.
Press the black button (J) to exit maintenance mode.
Figure 2F
13
2 CONTROLS
ENGINE TEMP
120F 50C
PEDAL REVERSE
000
Traction
Configuration.
Calibrate reverse
pedal movement.
Calibrate traction
pedal.
Calibrate forward
pedal movement.
Press and hold
black button.
Enter PIN.
Change Max
Mow Speed.
Mow Speed
Setting.
MOW SPEED
< 8 MPH >
SET MAX
MOW SPEED
ENTER PIN?
1234
CALIBRATE
PEDAL?
PEDAL FORWARD
000
Change Max
Transport Speed.
Transport Speed
Setting.
TRAVEL SPEED
< 12 MPH >
SET TRAVEL
SPEED
Cruise Control
Setting.
Traction
Configuration
Setting.
Units Setting.
Switch Status.
SWITCH STATUS
0100 000 100
METRIC
UNITS
CRUISE
DISABLED
CRUISE
ENABLED
TRACTION
MODE OFF
TRACTION
MODE ON
ENGLISH
UNITS
Figure 2G
14
SET-UP 3
!
!
3 Set-up
3.1 GENERAL __________________________ ______________________________ ________
The set-up and testing of the unit should always be
performed by a trained technician, familiar with the
operation of this equipment.
Read each instruction completely and make sure you
understand it before procee ding with the assembly. Stay
alert for potential hazards and obey all safety
precautions.
The RIGHT and LEFT, FRONT and REAR of the
machine are referenced fr om the operator’s seat , facing
forward.
Accessories not included with this product must be
ordered separately. See instructions provided with
accessory for installation and parts.
CAUTION
Do not attempt to drive the mower unless you are
familiar with this type of equ ipment and know how to
operate all controls correctly.
3.2 INITIAL INSPECTION_____________________________________________________________
CAUTION
The intial insp ect ion shou ld be pe rformed only when the engi ne is o ff, and all flui ds ar e cold . L ower im ple ments to
the ground, engage parking brake, stop engine, and remove ignition key.
1. Perform a visual inspection o f th e e ntire uni t, loo k for
signs of wear, loose hardware, and componen ts that
may have been damaged during transport.
2. Inspect paint and decals for damage or scratches.
Decals provide important operaing and safety
information. Replace all missing or hard to read
decals.
3. All fluids must be at th e full level mark with engine
cold
Check :
a. Radiator coolant level.
b. Engine oil level.
c. Hydraulic fluid level.
4. Make sure air filter connections are tight and cover
is securely in place.
5. Check tires for proper inflation. Tires have been
over inflated for transport. Correct tire pressure
should be set to 10 psi.
6. Check belt tension.
[Section 4.7].
7. Inspect battery connections and electrolyte level.
Check that battery is fully charged.
8. Check for fuel or oil leaks.
9. Inspect lube points on reels and mower for proper
lubrication.
[Section 6.1].
15
3 SET-UP
N
P
R
S
T
U
Front
M
M
M
M
A
B
C
D
E
F
G
H
J
K
Lift Yoke
L
3.3 REELS __________________________________________________________________
1. If installing five inch reels, apply Moly E P grease to
female spline on reel, a nd inse rt re el couple r (N) into
the bearing housing before attaching reel motor.
2. Remove hardware (P) from the outside front roller
brackets of the front wing mowers only. Install skid
plates (R) as shown using four 5/16-18 x 1 in. hex
head screws (S), four 5/1 6-18 Spiralock flange nuts
(T), two washers (U) and hardware (P).
7. Assemble the down pressure springs to each reel.
a. Insert roll pin (A) into hole at the end of down
pressure tube (B).
b. Slide tube through hole in lift yoke.
c. Assemble spring (C), washer (D ), 3/8-24 hex jam
nut (E) and rod end (F) to tube (B) as shown.
d. Secure d own pressure assembly to t he reel fram e
using one 3/8-16 x 1 -3/4 in. scr ew (G), spacer ( H),
lockwasher (J) and 3/8-16 hex nut (K).
e. Insert hair pin (L) and adjust down pressure
[Section 4.6].
Figure 3B
3. Install any special rollers or reel attachments
following instructions included with them.
4. Set bedknife-to-reel adjustment.
[Sections 4.2, 4.3]
5. Adjust cutting height to customer specifications.
[Section 4.4]
6. Install reels on mower as shown in Figure 3B
making sure motors (M) are mounted on the correc t
side. Refer to flash attach procedure.
[Section 4.5]
3.4 OPERATING CHECKS______________________________________________________
After the initial inspection and installation of reels and
accessories, te st the mower and impl ements for proper
operation.
1. Test the Interlock Sy st em.
[Section 3.5 ].
2. Start mower and check that switches, pedals and
controls operate as described.
[Sections 2.2, 2.3, and 2.4].
3. Check that warning lights and alarm are working.
4. Operate traction pedal and check that mower
operates smoothly in both directions. Check that
mower stops when traction pedal is released. If
necessary, calibrate traction pedal.
[Section 2.4.5].
16
Figure 3A
Figure 3C
5. Set mow speed.
[Section 2.4.5].
6. After installing reels check operation of reel lift
lever.
[Section 2.3].
7. Check operation of mower switch.
[Section 2.2].
8. Check operation of backlap switch.
[Section 2.3].
9. After operation, stop mower and inspect again for
oil or hydraulic leaks.
SET-UP 3
!
3.5 INTERLOCK SYSTEM ______________________________________________________
1. The interlock system prevents the engine from starting
unless the parking brake switch is Engaged, the traction
pedal is in Neutral, and the mow switch is OFF. The system also stops the engine if the ope rator leaves the seat
with the mow switch ON, traction pedal out of Neutral,
or parking brake switch is Disengaged.
WARNING
Never operate equipment with the Interlock
System disconnected or malfunctioning. Do not
disconnect 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 system inspected and repaired if any of
the tests
● the engine does not start in test 1;
● the engine does start during tests 2, 3, or 4;
● the engine continues to run during tests 5 or 6.
Test
fail as listed below:
Operator
Seated
Interlock System Check
Parking
Brake Switch
3. Refer to the chart below for each test and follow the
check (
between each test.
Test 1: Represents normal starting procedure. The
operator is seated, parking brake switch is Engaged,
the operator’s feet are off the pedals, and the mow
switch is OFF. The engine should start.
Test 2: The engine must not start if the mow switch is
ON.
Test 3: The engine must not start if the parking brake
switch is Disengaged.
Test 4: The engine must not start if the traction pedal is
pressed.
Test 5: Start the engine in the normal manner then turn
mow switch ON and lift your weight off the seat. H
Test 6: Start the engine in the normal manner then
disengage parking brake switch and lift your weight off
the seat. H
Traction Pedal
in Neutral
4) marks across the chart. Shut engine off
Mow
Switch
Engine
Starts
Yes No Engaged Disengaged Yes No On Off Yes No
1 44 4 44
2 44 44 4
3 44444
4 4 4 444
5 4
6 4
H Lift your weight off seat. The engine must shut down and cutting units must stop rotating within seven (7) seconds.
H
H
444
44 4
H
H
17
4 ADJUSTMENTS
!
!
1/16 in.
(1.5 mm)
B
LF025
4 Adjustments
4.1 GENERAL_______________ __ ______________________________ _________________
adjustment cannot be made, contact an authorized
WARNING
To prevent injury, lower implements to the ground,
disengage all drives, engage parking brake, stop engine,
and remove key from ignition switch before making any
adjustments or performing maintenance.
Jacobsen Dealer.
2. Replace, do not adjust, worn or damaged components.
3. Do not wear jewelry or loose fitting clothing when
making adjustments or repairs.
Make sure the mower is parked on a solid and level
surface. Never work on a mower that is supported only
by the jack. Always use jack stands.
If only the front or rear of the mower is raised, place
chocks in front of and behind the wheels that are not
raised.
1. Adjustments and maintenance should always be
performed by a qualified technician. If proper
Be careful to prevent entrapment of the hands and
fingers between mo ving and fixed c omponents of the
machine.
4. Do not change governor settings or overspeed the
engine.
CAUTION
4.2 BEDKNIFE-TO-REEL _______________________________________________________
(Pre-adjustment Check)
1. Check the reel bearings for end play or radial play.
2. Inspect the reel blades and bedknife to insure good
sharp edges without bends or nicks.
a. The leading edge of the reel blades must be sharp,
free of burrs, and show no signs of rounding off.
b. The bedknife and bedknife backing must be
securely tightened. The bedknife must be straight
and sharp.
c. A flat surface of at least 1/16 in. (1.5 mm) minimum
must be maintained on the front face of the bedknife. Use a standard flat file to dress the bedknife.
Figure 4A
3. If wear or damage is beyond the point where the reel
or bedknife can be corrected by the lapping process,
they must be reground.
4. Proper reel-to-bedknife adjustment is critical. A gap of
0.001 to 0.003 in. (0.025 to 0.076 mm) must be
maintained across the entire length of the reel and
bedknife.
5. The reel must be parallel to the bedknife. An
improperly adjusted reel will lose its sharp edges
prematurely and may result in serious damage to the
reel and bedknife.
6. Grass conditions will also affect the adjustment.
a. Dry, sparse conditions will require a wider gap to
prevent heat buildup and damage to the reel and
bedknife.
b. High quality grass with a good moisture content
requires a closer gap (near zero).
18
Figure 4B
ADJUSTMENTS 4
!
A
B
D
C
B
LF007
LF008
J
E
F
G
H
I
LF009
4.3 BEDKNIFE ADJUSTMENT___________________________________________________
Read Section 4.2 before making the adjustment.
CAUTION
To prevent personal injur y and damage to the cuttin g
edges, handle the reel with extreme care.
Start adjustment at leading end of reel, followed by the
trailing end. The leading end of the reel blade is that end
which passes over the bedknife first during normal reel
rotation. (B-Figure 4B)
1. Set leading edge of reel. On 7 in. reels use adjuster
to set the bedknife-to-reel gap. Screw adjuster down
(clockwise) to reduce gap.
On 5 in. reels use adjusters (C, D) to adjust gap. Loosen
bottom screw and turn top screw down to reduce gap.
2. Slide a feeler gauge or shim stock - 0.001 in. to 0.003
in. (0.025 to 0.076 mm) - between the reel blade and
the bedknife
3. Adjust the trailing end of the reel in the same manner
then recheck the adjustment at the leading end.
(B). Do not turn the reel.
(A),
Note: Avoid excessive tightening or damage may occur
to bedknife and reel blades. Reels must turn freely.
4. When the reel is properly adjusted to the bedknife, the
reel will spin freely and you should be able to cut a
piece of newspaper, along the full length of the reel,
when the paper is held at 90° to the bedknife.
4.4 CUTTING HEIGHT _________________________________________________________
Note: Always make the reel-to-bedknife adjustment before
adjusting height of cut, Section 4.2 and 4.3.
1. Raise mowers to transport position, engage the parking
brake, stop engine, and remove key from ignition
switch.
2. Set desired cutting height on the gauge
a. Measure distance between underside of screw
head and gauge block surface (
b. Adjust screw
tighten the wing nut.
3. Loosen the hardware on the front roller brackets (E)
just enough to allow the adjuster to raise or lower the
roller.
4. Place gauge
near one end of roller.
(F) to obtain desired height then
(I) across bottom of front and rear rollers
(I).
J).
Tighten locknut (E). Repeat Steps 4 and 5 on opposite
end. Complete adjustment to one end before adjusting
opposite end.
6. Tighten hardware and recheck each end.
Figure 4C
5. Slide the head of gauge screw over the bedknife (G)
and adjust the hand knob (H) to close the gap between
the screwhead and bedknife.
Figure 4D
19
4 ADJUSTMENTS
7 IN. REELS
5 IN. REELS
T
S
K
L
M
N
O
P
Q
R
LF010
N
8-15/16"
V
W
U
4.5 FLASH ATTACH™_________________________________________________________
Installing Cutting units
1. Place each cutting unit in front of its respective lift arm.
Raise lift arm and position cutting unit so tha t yoke (T) is
in line with swivel housing (S). Carefully lower arm onto
yoke. Insert pin (K) through hole in yoke, fasten
retaining clip (L), and install cap (M).
2. Assemble motors (N), with hoses attached, to the
cutting units. Clean motor splines and coupling. Apply
Moly 2 EP grease to the female spline on reel.
Thoroughly clean the motor mounting surface. Slide
motor into bearing housing. On 5 in. reels lock motor in
place by inserting two motor clips (O), with loops facing
center of motor, into mounting pins (P). On 7 in. reels
hand tighten key (Q) on bearing housing.
3. Raise reels and install down pressure spring pins (V,
Figure 4F). If cutting height has not changed, set pins
in same position they were in when reels were
removed.
Removing Cutting Units
1. Lower reels to the ground and remove down pressure
spring pins (V, Figure 4F). Make note of where springs
are set.
5. Carefully raise arm until cutting unit can be removed.
2. On 5 in. reels, remove motor clips (O). On 7 in. reels
loosen key (Q) on motor housing. Pull motor straight
out from cutting unit.
3. Carefully place motor and its hoses away from the
cutting unit. To prevent contamination and damage to
internal components cover or cap off bearing housing
cavity (R).
4. Remove cap (M) on lift arm. Unfasten retaining clip (L)
from pin (K) and remove pin.
4.6 DOWN PRESSURE ________________________________________________________
Each reel is equipped with a down pressure spring. Down
pressure improves cutting quality by ensuring consistent
contact between the reel and ground. Check and adjust
down pressure any time cutting height has been changed or
to optimize the cut for best performance.
1. With reels raised, place pin
joint. Lower reels onto a flat surface before measuring
down pressure.
2. Initially set distance between ball joint center and rod
cross pin center to 8-15/16 in. ± 1/16 in. (227 mm ± 2
mm). To adjust length, loosen lock nut
rod
3. Measure length of spring as shown on all 5 reels.
Record the shortest spring dimension and set the other
springs by adjusting rods
(V) in 4th hole from ball
(U) in or out of ball joint.
(U) to that dimension ± 1/16
20
(W) and turn
Figure 4E
in. (2 mm). The rod cross pin must be horizontal, then
tighten locknut (
4. To adjust down pressure, move pin one hole towards
spring to increase pressure, or one hole away from
spring to decrease pressure on rear roller.
W).
Figure 4F
ADJUSTMENTS 4
1/4 to 5/16 in.
(6 to 8 mm)
B
LF012
I
LF015
17°
4.7 BELT ____________________________________________________________________
Inspect and adjust new belt after first ten hours of operation.
Adjust every 100 hours thereafter.
Adjust alternator pulley so belt deflects 1/4 to 5/16 in. (6 to 8
mm) with a 20 lb. push at midpoint between pulleys. See
engine manual.
If tension is incorrect, loosen alternator mounting bolts (B)
and adjust alternator until proper belt tension is achieved.
Figure 4G
4.8 FRONT REEL LIMIT SWITCH ________________________________________________
The front left lift arm is equipped with a proximity switch,
which signals the controller to turn off the reels.The switch is
mounted to the mower frame directly behind the lift arm. If
reels continue to run when lifted, or do not run when
lowered, inspect switch. Adjust or replace switch as needed.
To adjust switch:
1. Park mower on a flat, level surface.
2. Remove reel from lift arm.
3. Turn ignition key to the RUN position to activate
controller. Do not run reels or start engine.
4. Adjust switch as required to obtain air gap between
switch and arm of 1/8 to 3/16 in. (3 to 5 mm).
5. Lift arm manually until it is at an angle of 17°.
6. With lift arm at 17°, adjust switch (I) up or down, until
switch contacts close. Secure switch in this position.
7. Start engine and check that reels turn off when raised.
NOTICE
The proximity switch sets the point where the reels turn
off, not how high they will raise. The reels will actually
raise to a position slightly above 17 °.
Figure 4H
21
4 ADJUSTMENTS
1/32 - 3/32 in.
0.8 - 2 mm)
J
M
N
P
K
K +0 to1/16 in.
L
(+0 to 1.5 mm)
LF016
V
V
4.9 STEERING TOE-IN_________________________________________________________
1. Turn wheels to straight ahead position.
2. Loosen jam nuts (J) on both sides of tie rod (M).
3. Turn tie rod (M) to provide proper toe-in. Toe-in must
not exceed +1/16 in. (1.5 mm) (K). Retighten jam nuts.
4. After adjusting tie rod, adjust steering cylinder by
threading the rod (N) in or out of ball joint so spindle
arm (L) clears the stop on the axle by 1/32 to 3/32 in.
(0.8 to 2 mm) (P) when cylinder is fully extended.
Figure 4I
4.10 ARMREST HEIGHT ADJUSTMENT ___________________________________________
The armrest has four available height settings for
operator convenience. To adjust armrest height:
1. Shut mower off and remove key.
2. Remove three bolts (V) from bracket on right sid e of
seat.
3. Raise or lower armrest as needed until ano ther set
of holes in armrest bracket lin e up with seat br acket.
Assemble hardware (V).
4. After adjusting height, check armrest wire harness
connector for a tight connection to main harness.
Figure 4J
22
ADJUSTMENTS 4
4.11 ARMREST PIVOT __________________________________________________________
1. Tighten or loosen pivot plunger (W) as required so
plunger button stops the armrest at both ends of
armrest pivot slots, and plunger body does not
contact armrest pivot. Do not use plunger to increase
pivot tension.
2. Adjust hardware (X) as required to obtain 2 to 6 lbs
(9 to 26.7 N) of force required, at visor end of
armrest, to pivot armrest. Do not overtighten pivot
hardware or leave too loose.
X
W
Figure 4K
23
4 ADJUSTMENTS
4.6
8.8
10.9
12.9
4.12 TORQUE SPECIFICATION___________________________________________________
NOTICE
All torque values included in these charts are approximate and are for reference only. Use of these torque values is
at your sole risk. Jacobsen is not responsible for any loss, claim, or damage arising from the use of these charts.
Extreme caution should always be used when using any torque value.
Jacobsen uses Grade 5 P lated bolts as standard, unless othe rwise noted. For tightenin g plated bolts, use the value
given for lubricated.
AMERICAN NATIONAL STANDARD FASTENERS
SIZE UNITS GRADE 5 GRADE 8 SIZE UNITS GRADE 5 GRADE 8
Lubricated Dry Lubricated Dry Lubri-
cated
#6-32 in-lb (Nm) – 20 (2.3) – – 7/16-14 ft-lb (Nm) 37 (50.1) 50 (67.8) 53 (71.8) 70 (94.9)
#8-32 in-lb (Nm) – 24 (2.7) – 30 (3.4) 7/16-20 ft-lb (Nm) 42 (56.9) 55 (74.6) 59 (80.0) 78 (105)
#10-24 in-lb (Nm) – 35 (4.0) – 45 (5.1) 1/2-13 ft-lb (Nm) 57 (77.2) 75 (101) 80 (108) 107 (145)
#10-32 in-lb (Nm) – 40 (4.5) – 50 (5.7) 1/2-20 ft-lb (Nm) 64 (86.7) 85 (115) 90 (122) 120 (162)
#12-24 in-lb (Nm) – 50 (5.7) – 65 (7.3) 9/16-12 ft-lb (Nm) 82 (111) 109 (148) 115 (156) 154 (209)
1/4-20 in-lb (Nm) 75 (8.4) 100 (11.3) 107 (12.1) 143 (16.1) 9/16-18 ft-lb (Nm) 92 (124) 122 (165) 129 (174) 172 (233)
1/4-28 in-lb (Nm) 85 (9.6) 115 (13.0) 120 (13.5) 163 (18.4) 5/8-11 ft-lb (Nm) 113 (153) 151 (204) 159 (215) 211 (286)
5/16-18 in-lb (Nm) 157 (17.7) 210 (23.7) 220 (24.8) 305 (34.4) 5/8-18 ft-lb (Nm) 128 (173) 170 (230) 180 (244) 240 (325)
5/16-24 in-lb (Nm) 173 (19.5) 230 (26.0) 245 (27.6) 325 (36.7) 3/4-10 ft-lb (Nm) 200 (271) 266 (360) 282 (382) 376 (509)
3/8-16 ft-lb (Nm) 23 (31.1) 31 (42.0) 32 (43.3) 44 (59.6) 3/4-16 ft-lb (Nm) 223 (302) 298 404 315 (427) 420 (569)
3/8-24 ft-lb (Nm) 26 (35.2) 35 (47.4) 37 (50.1) 50 (67.8) 7/8-14 ft-lb (Nm) 355 (481) 473 (641) 500 (678) 668 (905)
Dry Lubri-
cated
Dry
SIZE UNITS
Lubricated Dry Lubricated Dry Lubricated Dry Lubricated Dry
M4 Nm (in-lb) – – – – – – 3.83 (34) 5.11 (45) 2.0 (18)
M5 Nm (in-lb) 1.80 (16) 2.40 (21) 4.63 (41) 6.18 (54) 6.63 (59) 8.84 (78) 7.75 (68) 10.3 (910 4.0 (35)
M6 Nm (in-lb) 3.05 (27) 4.07 (36) 7.87 (69) 10.5 (93) 11.3 (102) 15.0 (133) 13.2 (117) 17.6 (156) 6.8 (60)
M8 Nm (in-lb) 7.41 (65) 9.98 (88) 19.1 (69) 25.5 (226) 27.3 (241) 36.5 (323) 32.0 (283) 42.6 (377) 17.0 (150)
M10 Nm (ft-lb) 14.7 (11) 19.6 (14) 37.8 (29) 50.5 (37) 54.1 (40) 72.2 (53) 63.3 (46) 84.4 (62) 33.9 (25)
M12 Nm (ft-lb) 25.6 (19) 34.1 (25) 66.0 (48) 88.0 (65) 94.5 (70) 125 (92) 110 (81) 147 (108) 61.0 (45)
M14 Nm (ft-lb) 40.8 (30) 54.3 (40) 105 (77) 140 (103) 150 (110) 200 (147) 175 (129) 234 (172) 94.9 (70)
24
METRIC FASTENERS
Non Critical
Fasteners
into
Aluminum
TROUBLESHOOTING 5
5 Troubleshooting
5.1 GENERAL __________________________ ______________________________ ________
The troubleshooting chart below lists basic problems that may occur during start-up and operation. For more detailed
information regarding the hydraulic and electrical systems contact your area Jacobsen Dealer.
Symptoms Possible Causes Action
Engine will not start.
Engine hard to start
or runs poorly.
Engine stops.
Engine overheating.
Battery not holding
charge.
Battery light on.
Reels cut unevenly.
1. Parking brake disengaged, traction
pedal not in Neutral or mow switch on.
2. Glow plug has not timed out. 2. Reset ignition switch and allow glow plug to time out
3. Battery low on charge or defective. 3. Inspect condition of battery and battery connections.
4. Fuel tank empty or dirty. 4. Fill with fresh fuel. Change fuel filter. Bleed fuel
5. Fuse blown. 5. Replace fuse.
6. Relay defective. 6. Test and replace relay.
7. Neutral switch on traction pedal out of
adjustment or defective.
1. Fuel level low, fuel or fuel filter dirty. 1. Fill with fresh fuel. Change fuel filter. Bleed fuel lines.
2. Air cleaner dirty. 2. Inspect and replace air filter.
3. Injectors, fuel pump. 3. Consult Engine Manual.
4. Engine problem. 4. Consult Engine Manual.
1. Fuel tank empty. 1. Fill with fresh fuel and bleed fuel lines.
2. Interlocks not set before leaving
operator’s seat.
1. Coolant level low. 1. Inspect and add coolant.
2. Air intake restricted. 2. Clean air intake at radiator.
3. Water pump belt broken or loose. 3. Tighten or replace belt.
1. Loose or corroded battery terminals. 1. Inspect and clean terminals.
2. Low electrolyte. 2. Refill to correct level.
3. Alternator belt loose or broken. 3. Tighten or replace belt
4. Charging system defective. 4. See engine manual.
1. Bedknife-to-reel not adjusted correctly. 1. Inspect bedknife-to-reel adjustment.
2. Engine speed too low. 2. Check engine speed. Run engine at full throttle.
3. Mow speed not adjusted for turf
conditions.
4. Mow switch set in reverse. 4. Set for forward rotation.
5. Not enough rear roller pressure. 5. Move down pressure spring one hole towards
6. Front roller not following undulations
adequately.
1. Check interlock system and start-up procedure.
before cranking engine.
lines.
7. Adjust or replace switch.
2. Engage parking brake and set mow switch to OFF.
3. Adjust mow speed for best cut.
spring.
6. Move down pressure spring one hole away from
spring.
25
6 LUBRICATION
2
33
5
6
77
8
8
9
10
12 12 11 13
11
13
14
14
14
4
15
1
9
Grease Fittings
F1 - 50 Hours (Every Week)
1 Swivel Housing
2Lift Arm
3 Lift Cylinders
4 Lift Arm Pivot
5 Brake Pedal Pivot
6 Traction Pedal Pivot
7 Ball Joint
8 Steering Pivot
9 Steering Cylinder
10 Axle Pivot
F2 - 100 Hours
11 Reel Bearing Cavity
12 Front Roller
13 Rear Roller
14 U-joint Driveshaft
F3 - 250 Hours
15 Motor Spline
Grease points same for all reels
LF023
6 Lubrication
6.1 LUBRICATION CHART
26
Pre-Delivery Checklist
Product No. 67978 - LF 550 2WD
Product No. 67979 - LF 550 4WD
Product No. 67980 - LF 550 Turbo 4WD
Mower _________________________
Check:
❏ Wheel lug torque 85 - 95 ft. lb. (115 - 128 N.m)
❏ Tire pressure
❏ Mower 10 - 12 psi (69 - 83 kPa)
❏ Traction Pedal Calibration
❏ Traction Pedal
Engine_________________________
Check:
❏ Engine oil level
❏ Engine coolant level
❏ Air cleaner element and connections
❏ Belt adjustment
Cutting Units ___________________
Check:
❏ All hardware securely fastened
❏ Reel end play, there should be none
❏ Front roller bearing adjustment
❏ Offset in front roller brackets is away from reel
❏ Adjust reel to bedknife, .001 to .003 in. (.025-.08 mm)
❏ Adjust cutting height to customers’ requirements
❏ Make sure hoses do not interfere with lift arm.
❏ Raise/lower operation
❏ Reel motor skid plaes must have raised lip to the
front
Product No. 67981 - LF 570 2WD
Product No. 67982 - LF 570 4WD
Product No. 67983 - LF 570 Turbo 4WD
Electrical System _______________
Check:
❏ Interlock System
❏ Ignition Switch
❏ Brake Switch
❏ Mow Switch
❏ Seat Switch
❏ LDU Operation
❏ Operation of all control switches
❏ Reel Arm Limit Switch
❏ For pinched or rubbing wires
Hydraulic System _______________
Check:
❏ Hydraulic oil level
❏ For pinched or rubbing hoses
❏ For twisted or crimped hoses
❏ For oil leaks
❏ Pump drive belt adjustment
❏ Tow Valve is closed
Miscellaneous__________________
❏ Check for loose or missing hardware
❏ All lubrication points
❏ Examine paint finish; touch up where necessary
❏ Check decals. In place and legible
❏ Make sure Parts & Maintenance Manual and Safety
& Operation Manual are in the pouch
Support___________________________________________________________
If you encounter any problems while setting up this
mower, contact the Jacobsen Customer Care
department.
Problem Description
_____________________________________________________________________________________________
_____________________________________________________________________________________________
_____________________________________________________________________________________________
Dealer___ _____________________________________________ Inspected ____________________________
Customer _____________________________________________ Date _________________________________
Product No.____________________________________________ Serial No._____________________________
Jacobsen, A Textron Compan y
11108 Quality Drive
Charlotte, NC 28273
800-848-1636
http://www.Jacobsen.com
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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