Iseki SXG 323; SXG 326 User manual

ISEKILAWNMOWERS
LAWN MOWERS:
MOWER DECKS:
COLLECTORS:
SXG323 & 326
SCMB48 & SCMA54
SBC550X & 600X

ISEKI LAWN MOWERS
1
INTRODUCTION
Thank you very much for purchasing an ISEKI lawn mower.
This operation manual provides the information necessary for operating and maintaining the lawn mower safely and
properly. The contents are mainly composed of the following two items:
SAFETY INSTRUCTION: Essential items which you should observe while operating the lawn mower.
TECHNICAL INSTRUCTION: Items which are necessary to operate, adjust, and service the lawn mower
properly.
Every time you see the words and symbols shown below in the manual and on the safety decals, you must take note
of their instructions and warning.
DANGER: This symbol together with the words DANGER indicates an imminently hazardous situation that,
if not avoided, will result in VERY SERIOUS INJURY OR EVEN DEATH.
WARNING: This symbol together with the word WARNING indicates a potentially hazardous situation that, if
not avoided, could result in SERIOUS INJURY OR EVEN DEATH.
CAUTION: This symbol together with the word CAUTION is used to indicate a potentially hazardous
situation that, if not avoided, may result in MINOR INJURY.
IMPORTANT: The word IMPORTANT is used to provide instructions or advice in order to let the lawn mower provide
the optimum performance.
NOTE: The word NOTE is used to indicate points of particular interest for more efficient and convenient repair or
operation.
Before starting to operate the lawn mower for the first time, you should read this operation manual thoroughly and
carefully until you are sufficiently familiar with the operation of the lawn mower in order to do jobs safely and properly.
You are advised to refer to it from time to time to refresh your understanding of the lawn mower.
The manual should be kept in a handy place so you can refer to it when required.
The parts employed in this lawn mower may be modified without notice for better performance and quality and for
safety purposes, which may lead to some inconsistency found on your lawn mower with the contents of this manual.
The lawn mower is designed to be used on well-kept lawns. Using the lawn mower in other places is not authorized.
Besides, the manufacturer will not pay for any damage caused by unauthorized use and the risk is only borne by
the user. Proper use of the lawn mower also implies that the user follows the operational, adjusting, and servicing
instructions indicated in the operation manual.
When you have any question about your lawn mower, you are always welcome to ask your dealer.

SXG
2
CONTENTS
INTRODUCTION......................................................................................................................................................... 1
I. FOR SAFE OPERATION ...................................................................................................................................... 5
1. HOW TO BE A SAFE OPERATOR.................................................................................................................... 5
2. BEFORE STARTING THE LAWN MOWER ...................................................................................................... 7
3. OPERATION OF THE LAWN MOWER ............................................................................................................. 9
4. OPERATION ON A SLOPE ............................................................................................................................... 12
5. DRIVING ON PUBLIC ROADS ......................................................................................................................... 13
6. LOADING ONTO OR UNLOADING FROM A TRUCK ...................................................................................... 14
7. WHEN FILLING WITH FUEL............................................................................................................................. 15
8. MOUNTING AND DISMOUNTING OF THE MOWER DRIVE SHAFT.............................................................. 16
9. LAWN MOWER MAINTENANCE...................................................................................................................... 16
10. MAINTENANCE OF THE ELECTRICAL SYSTEM ........................................................................................... 19
11. TIRES AND WHEELS ....................................................................................................................................... 20
12. BEFORE STORING THE LAWN MOWER........................................................................................................ 20
13. LONG TERM STORAGE................................................................................................................................... 21
14. CAUTION LABELS & THEIR POSITIONS ........................................................................................................ 22
II. WARRANTY AND AFTER-SALE CARE ................................................................................................................ 29
III. SPECIFICATIONS.................................................................................................................................................. 31
LAWN MOWERS
IV. NAMES OF MAJOR COMPONENTS.................................................................................................................... 33
V. CONTROLS AND METERS.................................................................................................................................... 34
1. CONTROL PANEL............................................................................................................................................. 34
1.1. STARTER SWITCH..................................................................................................................................... 36
1.2. THROTTLE LEVER..................................................................................................................................... 36
1.3. MONITOR LAMP ARRAY............................................................................................................................ 36
1.4. PTO LEVER ................................................................................................................................................ 37
1.5. TACHOMETER AND HOURMETER........................................................................................................... 37
1.6. FUEL GAUGE ............................................................................................................................................. 37
1.7. COOLANT TEMPERATURE GAUGE ......................................................................................................... 37
1.8. HEADLAMP SWITCH (E TYPE) ................................................................................................................. 38
1.9. POSITION SWITCH (GE TYPE)................................................................................................................. 38
1.10. COMBINATION SWITCH (GE TYPE) ......................................................................................................... 38
1.11. HAZARD LIGHT SWITCH (GE TYPE)........................................................................................................ 38
2. FENDER (WING) PANEL .................................................................................................................................. 38
2.1. LIFT LEVER ................................................................................................................................................ 38
2.2. PARKING BRAKE LEVER (GE TYPE) ....................................................................................................... 38
2.3. CLEANING LEVER ..................................................................................................................................... 39
2.4. HEIGHT ADJUSTMENT DIAL..................................................................................................................... 39
2.5. COLLECTOR LIFT LEVER ......................................................................................................................... 39
2.6. COLLECTOR DUMP LEVER ...................................................................................................................... 39
3. CONTROL PEDALS .......................................................................................................................................... 40
3.1. MASTER BRAKE PEDAL ........................................................................................................................... 40
3.2. PARKING LOCK (E TYPE) ......................................................................................................................... 40
3.3. HST FORWARD TRAVEL PEDAL............................................................................................................... 40
3.4. HST REVERSE TRAVEL PEDAL................................................................................................................ 40
3.5. DIF-LOCK PEDAL....................................................................................................................................... 40
4. OTHER CONTROLS ......................................................................................................................................... 40
4.1. SAFETY SWITCHES .................................................................................................................................. 40
VI. PRE-OPERATIONAL ROUTINE INSPECTION .................................................................................................... 41
1. INSEPCTION ITEMS......................................................................................................................................... 41
2. WAY OF INSPECTION AND MAINTENANCE .................................................................................................. 41

ISEKI LAWN MOWERS
3
VII. OPERATION ......................................................................................................................................................... 42
1. BEFORE STARTING THE ENGINE .................................................................................................................. 42
2. STARTING THE ENGINE.................................................................................................................................. 42
3. STOPPING THE ENGINE ................................................................................................................................. 43
4. TRAVELLING..................................................................................................................................................... 44
5. STOPPING ........................................................................................................................................................ 45
VIII. MAINTENANCE................................................................................................................................................... 46
1. ENGINE HOOD ................................................................................................................................................. 46
2. ENGINE OIL LEVEL .......................................................................................................................................... 46
3. TRANSMISSION OIL LEVEL............................................................................................................................. 47
4. COOLANT LEVEL ............................................................................................................................................. 47
5. FUEL LEVEL ..................................................................................................................................................... 48
6. AIR-CLEANER .................................................................................................................................................. 48
7. FUEL STRAINER .............................................................................................................................................. 49
8. INSPECTION OF FUEL HOSES ....................................................................................................................... 49
9. FAN BELT.......................................................................................................................................................... 50
10. FRONT PTO ...................................................................................................................................................... 50
11. ADJUSTMENT OF MASTER BRAKE PEDAL................................................................................................... 51
12. NEUTRAL POSITION OF HST.......................................................................................................................... 51
13. INSPECTION OF WHEEL TIGHTENING BOLTS AND NUTS .......................................................................... 52
14. BATTERY .......................................................................................................................................................... 52
15. TIRE PRESSURE (INFLATION)........................................................................................................................ 53
16. INSPECTION OF STEERING WHEEL.............................................................................................................. 53
17. REPLACEMENT OF ENGINE OIL ................................................................................................................... 54
18. REPLACEMENT OF ENGINE OIL FILTER ...................................................................................................... 54
19. REPLACEMENT OF TRANSMISSION OIL ...................................................................................................... 55
20. REPLACEMENT OF HYDRAULIC OIL FILTER ................................................................................................ 55
21. REPLACEMENT OF CHAIN CASE OIL ........................................................................................................... 56
22. WASHING AND REPLACEMENT OF SUCTION FILTER................................................................................. 56
23. INSPECTION AND CLEANING OF AIR-INTAKE OPENINGS .......................................................................... 56
24. CLEANING OF THE RADIATOR....................................................................................................................... 57
25. REPLACEMENT OF COOLANT ...................................................................................................................... 57
26. INSPECTION OF FUSES AND WIRING........................................................................................................... 58
27. HYDRAULIC SYSTEM PARTS ......................................................................................................................... 59
28. INSPECTION OF SAFETY SWITCHES............................................................................................................ 59
29. WASHING OF THE MACHINE.......................................................................................................................... 60
30. MAJOR CONSUMABLES LIST......................................................................................................................... 61
31. FILLING DIAGRAM ........................................................................................................................................... 63
32. PERIODICAL INSPECTION TABLE .................................................................................................................. 64
IX. STORAGE ............................................................................................................................................................. 65
X. TROUBLESHOOTING............................................................................................................................................ 66
XI. ELECTRIC WIRING............................................................................................................................................... 71
MOWER DECKS
I. NAMES OF MAJOR COMPONENTS...................................................................................................................... 73
II. ATTACHING AND DETACHING MOWER DECK................................................................................................... 74
1. ATTACHING THE MOWER DECK .................................................................................................................... 74
2. DETACHING THE MOWER DECK ................................................................................................................... 75
III. MOWER OPERATION ........................................................................................................................................... 76
1. BEFORE OPERATION...................................................................................................................................... 76
2. CUTTING HEIGHT ADJUSTMENT ................................................................................................................... 76
3. HEIGHT ADJUSTMENT DIAL ........................................................................................................................... 76
4. STARTING MOWING OPERATION .................................................................................................................. 77
5. CLEANING A MOWER DECK AND CHUTE CLOGGED WITH GRASS .......................................................... 77
6. EMERGENCY STOP......................................................................................................................................... 79

SXG
4
7. STOPPING MOWING OPERATION.................................................................................................................. 79
8. EFFICIENT MOWING........................................................................................................................................ 80
9. HOW TO USE AIR INTAKE COVER ................................................................................................................. 81
IV. INSPECTION AND MAINTENANCE OF MAJOR PARTS .................................................................................... 82
1. INSPECTION AND REPLACEMENT OF BEVEL GEAR CASE........................................................................ 82
2. INSPECTION AND REPLACEMENT OF FRONT BELT ................................................................................... 83
3. INSPECTION & REPLACEMENT OF BLADES ................................................................................................ 83
4. INSPECTION OF GAUGE WHEELS ................................................................................................................ 85
5. INSPECTION OF ROLLERS............................................................................................................................. 85
6. CLEANING OF MOWER DECK ........................................................................................................................ 85
7. FILLING DIAGRAM ........................................................................................................................................... 86
8. PERIODICAL INSPECTION TABLE.................................................................................................................. 87
V. STORAGE OF MOWER DECK .............................................................................................................................. 88
VI. TROUBLESHOOTING........................................................................................................................................... 89
COLLECTORS
I. NAMES OF MAJOR COMPORNENTS ................................................................................................................... 91
II. DETACHING AND ATTACHING COLLECTOR...................................................................................................... 92
1. DETACHING THE HIGH DUMP COLLECTOR (SBC600X-HQE4)................................................................... 92
2. ATTACHING THE HIGH DUMP COLLECTOR (SBC600X-HQE4).................................................................... 93
3. DETACHING THE LOW DUMP COLLECTOR (SBC550X-LE4) ....................................................................... 94
4. ATTACHING THE LOW DUMP COLLECTOR (SBC550X-LE4)........................................................................ 94
III. COLLECTOR OPERATION ................................................................................................................................... 95
1. BEFORE OPERATION...................................................................................................................................... 95
2. ADJUSTMENT OF THE GRASS LIMIT SENSOR ............................................................................................ 95
3. INSPECTION BEFORE OPERATION............................................................................................................... 95
4. CLEANING A COLLECTOR .............................................................................................................................. 96
5. EFFICIENT COLLECTING ................................................................................................................................ 96
IV. INSPECTION AND MAINTAINANCE OF MAJOR PARTS ................................................................................... 97
1. INSPECTION OF CYLINDER (SBC550X-L) ..................................................................................................... 97
2. INSPECTION OF HYDRAULIC HOSES ........................................................................................................... 97
3. FILLING DIAGRAM ........................................................................................................................................... 98
4. PERIODICAL INSPECTION TABLE.................................................................................................................. 99
V. STORAGE OF COLLECTOR ................................................................................................................................ 100
VI. TROUBLESHOOTING.......................................................................................................................................... 101
This manual explains about several types of the lawn mowers, mower decks and collectors as listed below. Please
confirm the type of yours by referring to the name plate.
Lawn mowers Mower decks Collectors
Secondary braking device Cutting width High dump Low dump
SXG326H-GE 1372mm (54 in.) 1220mm (48 in.) SBC 600X-H 
SXG326H-E SCMA 54 SBC 550X-L 
SXG323H-GE SCMB 48 
SXG323H-E
All information, illustrations, and specifications contained in this manual are based on the latest information available
at the time of publication. The right is reserved to make changes at any time without notice.

I. FOR SAFE OPERATION
5
I. FOR SAFE OPERATION
DANGER: Failure to observe the following
safety instructions can result in serious
injury or death. As the owner or operator
of the lawn mower, you are responsible for
preventing accidents or injuries.
1. HOW TO BE A SAFE OPERATOR
1.1. Follow all the safety signs on the lawn mower and
all the manufacturer’s instructions before start-
ing the lawn mower. If you do not, it may result in
body injuries.
1.2. Pay attention to the caution labels on the lawn
mower, mower deck and collector, and observe the
instructions they give to avoid physical injuries.
1.3. Ensure that all operators are responsible individu-
als who have read the instructions or been fully
trained on the safe operation of the lawn mower.
1.4. All operators should evaluate their health and
ability to operate the lawn mower safely enough
to protect themselves and others from serious
injury. Do not operate the lawn mower while you
are under the influence of alcohol or drugs.
1.5. Understand how to properly and safely operate
and maintain the lawn mower. Seek and obtain
practical instruction on how to operate and main-
tain the lawn mower properly.
1.6. Be sure to use necessary protective devices such
as headgear, safety glasses, safety shoes, ear
plugs, gloves, etc.
1.7. Wear appropriate protective clothing and equip-
ment when you are operating, adjusting, or ser-
vicing the lawn mower, such as safety glasses,
long pants, substantial footwear, and ear protec-
tion. Long hair, loose clothing, or jewellery can
get tangled in moving parts.
1.8. Never permit the following persons to operate the
lawn mower:
- Persons not properly trained to operate the lawn
mower
- Persons who cannot understand the instructions
mentioned in this operation manual and on the
caution labels
- Pregnant women
- Children; Local regulations may restrict the age of
the operator.
FIG. 1
FIG. 2
FIG. 3

SXG
6
1.9. Inspect the lawn mower periodically. If not, this
may not only shorten the lawn mower’s service
life but also make safe and efficient operation
impossible.
1.10. Never use the lawn mower out of normal usage
even if it is not mentioned at this operation manual.

I. FOR SAFE OPERATION
7
2. BEFORE STARTING THE LAWN MOWER
2.1. Set up an operation plan with sufficient time al-
lowance. A tight plan may result in unexpected
accidents. Especially when operating the lawn
mower under extremely hot, cold, or humid cir-
cumstances, set up an operation schedule or
method which will ensure operational safety.
2.2. Mow only in daylight or good artificial light. Mow-
ing in the dark may cause unexpected accidents.
2.3. Thoroughly inspect the mowing area and remove
all objects from the mowing area that the lawn
mower can throw, such as stones, toys, sticks,
and wires, which may lead to serious accidents.
2.4. Ensure that there are no people or pets in the
area where you will mow. Keep children out of the
mowing area and under the watchful care of a re-
sponsible adult.
2.5. Do not operate the lawn mower unless the op-
erator’s presence controls, safety switches, and
guards are attached and functioning properly.
2.6. Start the engine from the operating or designated
starting position.
2.7. Before starting the engine, make sure that every-
thing is safe around the lawn mower and put the
traction drive in neutral, apply the parking brake
or parking lock, and disengage the cutting unit(s).
Otherwise, unexpected accidents may occur.
2.8. Start the engine with the starter switch only.
Never attempt to start the engine by shorting the
terminals, or the lawn mower may move abruptly,
and result in unexpected accidents.
2.9. Do not run the engine in an enclosed area where
dangerous carbon monoxide fumes can collect.
Sufficient ventilation should be provided when
starting the engine in an enclosed area.
2.10. Make sure of safety around the lawn mower and
move slowly when starting. Abrupt starting may
cause unexpected accidents.
2.11. Become familiar with the operation, particularly,
the stopping of the lawn mower. You should be
skilful enough to be able to stop the lawn mower
at will.
2.12. Use only attachments and accessories approved
by the manufacturer and install and operate them
as directed.
FIG. 4

SXG
8
2.13. Be sure to operate the lawn mower equipped with
a standard mower deck and collector. Never mow
grass without the collector, or the lawn mower
scatters grass, stone and other flying debris,
which is very dangerous. If you would like not to
collect the cut glass in a collector, equip an op-
tional discharge cover for collector.
Discharge cover for SBC550XL
• (8664-705-200-00) .......................................1pc
Discharge cover for SBC600XH
• (8664-755-500-00) .......................................1pc
2.14. When your lawn mower is equipped with an
implement other than a standard mower deck and
collector, never fail to ask your dealer about ma-
chine balance. Always follow their advice.
2.15. Keep in mind that the operator or user is respon-
sible for the accidents or hazards caused by the
lawn mower to other people or their property.
2.16. Inspect the lawn mower for wear or damage.
Replace any worn or damaged parts.
2.17. Especially before starting the mower, be sure to
perform advised pre-operation inspections espe-
cially on the brake and inspect visually to see that
the blade and blade tightening nuts are not worn,
damaged or loose. Replace worn or damaged
blade and nuts as an assembly to preserve blade
balance. Otherwise, poor braking or scattered bro-
ken blades may result, which is very dangerous.

I. FOR SAFE OPERATION
9
3. OPERATION OF THE LAWN MOWER
3.1. When the lawn mower is running, stay away from
the discharge opening, the cutting unit(s), and all
moving parts.
3.2. During operation, never allow anyone, espe-
cially children, and animals to be in the vicinity of
the lawn mower. Do not direct the discharge
at anyone.
3.3. When you are working with coworkers, be sure
to alert them by signalling before you take a new
action.
3.4. When operating the lawn mower, you should be
seated in the operator’s seat properly, hold the
steering wheel by both hands, and look in the di-
rection in which the lawn mower advances. Avoid
looking aside or holding the steering wheel by
one hand during operation.
3.5. Always be sure to operate the lawn mower from
the operator’s seat. Never attempt to get on or off
the lawn mower while it is travelling.
3.6. Do not mow on wet grass. The lawn mower may
slide.
3.7. Slow down before turning the lawn mower. Turn-
ing at high speed may cause the lawn mower to
turn over.
3.8. Never attempt to depress the dif-lock pedal while
turning around the lawn mower. Turning with the
dif-lock on may cause the lawn mower to turn over.
3.9. Look down and behind you and ensure a clear
path before you move the lawn mower backward.
3.10. Do not mow while moving backward unless it is
absolutely necessary.
3.11. Never operate the lawn mower in terrain where
there are ditches, holes, or steps easy to col-
lapse. In such a place, the lawn mower could turn
over or fall.
3.12. Before making access to moving parts, stop the
engine, and keep your hands, feet, clothing, ac-
cessories and etc. away so as not to be caught in
the moving parts of the lawn mower.
3.13. Be alert when you approach blind corners and
objects that may obscure your vision. Watch for
holes, ruts, or bumps. Tall grass can hide obstacles.
3.14. Never rest a foot on the brake pedal. If so,
the brakes wear rapidly, which may lead to seri-
ous accidents.
FIG. 5