Iseki SCMA48F Reference manual

MOWER DECK
1
CHAPTER 1
I
SEKI MOWER DECK
S
SC
MA4
8F
SC
MA
5
4
F
S
MM
5
4
F
ISEKI MOWER DECKS
SCMA48F
SCMA54F
SMM54F
CHAPTER 1
CHAPTER 2
CHAPTER 3
CHAPTER 4
CHAPTER 5
CHAPTER 6
CHAPTER 7
CHAPTER 8
CHAPTER 9
CHAPTER 10
CHAPTER 11
CHAPTER 12

MOWER DECK
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INTRODUCTION
Thank you very much for purchasing an ISEKI mower.
This manual is intended to provide the information necessary for operating and maintaining
your mower safely and properly. The contents are mainly composed of the following two
items:
Safety instructions: Essential items which you should observe while operating
the lawn mower
Technical instruction: Items which are necessary to operate,adjust, and service
the mower properly
Before starting to operate the machine for the first time,you should read this manual
thoroughly and carefully.The manual should be kept in a handy place so you can refer to it
when required.You are advised to refer to it from time to time to refresh your understanding
of the safety operation.
The lawn mower is designed to be used on well-kept lawns. Using the machine in other
places is not authorized. Besides, the manufacturer does not pay for any damage caused
by unauthorized use, the risk being borne by the user. Proper use of the machine also
implies that the user follows the operational, adjusting, and servicing instructions indicated
in this manual.
When you have any question about your purchased machine, you are always welcome to
ask your dealers.
The paragraphs in the manual and the labels on the machine accompanied
by the caution mark indicate particularly important information about safe
operation to prevent accidents. You should always keep these precautions in
mind and follow them during operation.
Be sure to wear
personal protective gear
during operation.
All information, illustrations, and specifcations 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.
The word “LAWN MOWER”means the combination of the tractor (driver) and the implement (mower).

SFH220 & SFH240 FRONT MOWER SERVICE MANUAL
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INTRODUCTION......................................................................................................................... 3
TABLE OF CONTENTS .............................................................................................................. 4
CHAPTER 1. FOR SAFE OPERATION...................................................................................... 7
1. MANUAL.............................................................................................................................. 7
CHAPTER 2. SPECIFICATIONS ................................................................................................ 11
CHAPTER 3. NAMES OF MAJOR COMPONENTS .................................................................. 13
CHAPTER 4. ATTACHING AND DETACHING MOWER DECK ................................................ 15
1. ATTACHING THE MOWER DECK ...................................................................................... 15
2. ADJUSTMENT OF LINKAGE ............................................................................................. 16
2.1. ADJUSTMENT OF MAXIMUM LIFTING HEIGHT ........................................................ 16
2.2. ADJUSTMENT OF UP-STOP HEIGHT ....................................................................... 16
3. ATTACHING THE DRIVE SHAFT ....................................................................................... 17
4. DETACHING THE MOWER DECK ..................................................................................... 17
5. ATTACHING THE DRIVE SHAFT ....................................................................................... 17
6. DETACHING THE MOWER DECK ..................................................................................... 17
CHAPTER 5. MOWER OPERATION.......................................................................................... 19
1. BEFORE OPERATION ....................................................................................................... 19
2. CUTTING HEIGHT ADJUSTMENT .................................................................................... 19
3. STARTING MOWING OPERATION .................................................................................... 20
4. CLEANING A MOWER DECK CLOGGED WITH GRASS................................................... 21
5. CLEANING A CHUTE CLOGGED WITH GRASS ............................................................... 22
6. EMERGENCY STOP .......................................................................................................... 22
7. STOPPING MOWING OPERATION ................................................................................... 22
8. EFFICIENT MOWING ......................................................................................................... 23
CHAPTER 6. SCMA54F,48F INSPECTION AND MAINTENANCE OF MAJOR PARTS .......... 25
1. INSPECTION AND REPLACEMENT OF BEVEL GEAR CASE OIL ................................... 25
2. INSPECTION & REPLACEMENT OF BLADES .................................................................. 26
3. INSPECTION OF GAUGE WHEELS / ROLLERS............................................................... 27
4. INSPECTION OF ROLLERS ............................................................................................. 27
5. CLEANING OF MOWER DECK .......................................................................................... 27
6. FILLING DIAGRAM ............................................................................................................. 28
7. PERIODICAL INSPECTION TABLE ................................................................................... 29
CHAPTER 7. SCMA54F,48F STORING THE MOWER.............................................................. 31
TABLE OF CONTENTS

MOWER DECK
5
CHAPTER 8. SCMA54F,48F TROUBLESHOOTING................................................................. 33
CHAPTER 9. SMM54 INSPECTION AND MAINTENANCE OF MAJOR PARTS...................... 35
1. INSPECTION AND REPLACEMENT OF GEAR CASE OIL................................................ 35
2. INSPECTION AND REPLACEMENT OF V-BELTS ............................................................ 36
3. INSPECTION & REPLACEMENT OF BLADES ................................................................. 37
4. INSPECTION OF GAUGE WHEELS .................................................................................. 39
5. INSPECTION OF ROLLERS .............................................................................................. 39
6. CLEANING OF MOWER DECK ......................................................................................... 39
7. PERIODICAL INSPECTION TABLE .................................................................................... 41
CHAPTER 10. STORING THE MOWER .................................................................................... 43
CHAPTER 11. SMM54 TROUBLESHOOTING .......................................................................... 45
CHAPTER 12. DISASSEMBLY AND REASSEMBLY OF GEAR BOX ...................................... 47
1. CONSTRUCTION................................................................................................................ 47
2. DISASSEMBLY AND REASSEMBLY .................................................................................. 48
3. BACKLASH ADJUSTMENT................................................................................................. 51
4. SIDE AND CENTER METAL................................................................................................ 52

SFH220 & SFH240 FRONT MOWER SERVICE MANUAL
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CHAPTER 1. FOR SAFE OPERATION
7
1
CHAPTER 1. FOR SAFE OPERATION
1. MANUAL
Before starting the lawn mower for the first time, read this manual thoroughly and carefully.
Especially abide by the instructions for safe operation. If you do not, it may result in bodily
injuries.
・If you have consumed intoxicating beverages,are
drowsy from medication, ill, or tired,never operate the
machine.
・When you let someone else operate the machine,
instruct this person how to operate the machine and
also advise the reading of this manual.
・Never permit the follwing persons to operate the ma-
chine:
- Persons not properly trained to operate the machine
- Persons who cannot understand the instruction
mentioned on the caution labels
- Pregnant women
- Chidren
Local regulations may restrict the age if the opera-
tor.
・Keep in mind that the operator or user is responsible
for any accident or hazard caused by the machine to
other people or their property.
・Never perform operations other than those for which
the machine is designed. Operations the mower is
not designed for may cause damage to the machine,
shorten service life, or in the worst case lead to a seri-
ous accident.
・Never attempt unauthorized modification of the ma-
chine as this could be very hazardous.
・Take care as rotating one blade can cause other
blades to rotate.
・Do not touch rotating blades.
・Never step on the mower deck.
・When you are working with co-workers, be sure to
alert them by signalling before you make a new move.
・While mowing, always wear substantial shoes and
long trousers. Do not operate the machine barefoot or
while wearing open sandals.
・When operating, adjusting, or servicing the machine,
avoid wearing long loose clothes, accessories or let-
ting long hair hang loose, which could be caught in
rotating parts or on projections.Be sure to use nec-
essary protective devices such as a headgear, safety
glasses, safety shoes, ear plugs, gloves,etc.
・It is recommended to wear ear protectors such as
ear plugs, earmuffs, etc. But your ears should not be
plugged to the extent that horns of other machines
and calls from other persons are inaudible.
・Stop the blades and keep the mower in the transport
position when crossing surfaces other than grass
or when transporting it to and from the area to be
mowed.
・It is not recommendable to operate the machine on a
slope.
・When servicing the machine or mounting or dismount-
ing the mower, place the machine on level, hard
ground.
・When servicing the machine or mounting or dismount-
ing the mower, stop the engine and remove the en-
gine key.
・When servicing the mower, be sure to apply the hy-
draunlic lift lock without fail.
・When servicing the machine, use proper tools.Using
makeshift tools may lead to injuries or poor service,
which may result in unexpected accidents during op-
eration.

SFH220 & SFH240 FRONT MOWER SERVICE MANUAL
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・Service the machine in a place sufficiently illuminated,
to avoid unexpected accidents.
・The engine, muffler, radiator, etc. are very hot just
after operation, so wait until those heated parts cool
down sufficiently to avoid burns.
・Avoid high-pressure fluids. Escaping fluid under pres-
sure can penetrate the skin and cause serious injury,
so keep hands and body away from pin holes and
nozzles ejecting such fluids. Be sure to consult your
dealer about any hydraulic and fuel injection system
trouble.
・If any hydraulic fluid is injected accidentally into the
skin, it must be removed within a few hours by a doc-
tor familiar with this type of injury.
・Keep all nuts, bolts and screws tight to be sure that
the equipment is in safe working condition.
・Be sure to reinstall the removed parts in place.
・A first aid kit and a fire extinguisher should be kept in
a place always in instant access.

CHAPTER 1. FOR SAFE OPERATION
9
1
SCMA48 & 54
SMM54
2 5 2
1
3 4
1
11
2
453

SFH220 & SFH240 FRONT MOWER SERVICE MANUAL
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(4) Belt warning lable
(Code No. 8595-901-006-0)
WARNING: RISK OF ENTANGLEMENT
Stay clear of the belt while it is running.
(5) Maintenance label
(Code No. 1593-901-015-0)
Shut down the engine and remove the starter key before
performing maintenance or repair work.
・Maintenance of the caution labels
- The labels should always be clearly seen, that is,
nothing should obscure them.
- When they have become dirty, wash them with
soapy water and wipe off with soft cloth.
- If any of them are torn or lost, order new labels from
your dealer.
- A new label should be placed in the same place
where the old one was located.
- When sticking on a new label, clean the place to
enable the label to stick and squeeze out all air
bubbles trapped under it.
- When replacing a part with a caution label stuck on,
a new caution label should also be ordered and in-
stalled.
(1) Danger label
(Code No. 2500-901-014-3)
WARNING: RISK OF INJURY
Stay clear of the mower blades while the engine is run-
ning.
(2) Hot-part warning lable
(Code No. 8595-901-007-0)
WARNING: HOT SURFACES, RISK OF BURNS ON
HANDS AND FINGERS
Stay clear of the heated parts until they cool down suf-
ficiently.
(3) PTO label
(Code No. 8654-901-002-0)
WARNING: RISK OF ENTANGLEMENT
Stay clear of the PTO shaft while the engine is running.

CHAPTER 2. SPECIFICATIONS
11
2
CHAPTER 2. SPECIFICATIONS
Models SCMA48 SCMA54 SMM54
Type Rotary mower with rear discharge Rotary mower
Cutting width 1220mm 1372mm 1370mm
Number of blades 2 3
Blade driving method Drive shaft and belt
Belts SB101-W800
Blade rotating speeds
(Gear box input speed)
(Engine speed)
1983rpm 1797rpm 2894rpm
1986rpm 1757rpm
2600rpm
Dimensions Overall length 929mm 1004mm 934mm
Overall width 1287mm 1441mm 1449mm
Overall height 448mm
Weight(with linkage) 90kg 100kg 115kg
Cutting height
adjustment Adjustable in 6 stages by pin shifting and no step by cutting height dial
Cutting height 30-120mm 95mm
Discharge direction Rearward -

SFH220 & SFH240 FRONT MOWER SERVICE MANUAL
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CHAPTER 3. NAMES OF MAJOR COMPONENTS
13
3
CHAPTER 3. NAMES OF MAJOR COMPONENTS
SCMA54F,48F
SCMA54F,48F
(1) Mower deck
(2) Drive shaft
(3) Bevel gear case (LH)
(4) Bevel gear case (RH)
(5) Drive shaft cover
(6) Gauge wheel
(7) Roller
(8) Blade (LH)
(9) Blade (RH)
1
7 75
2
5
4
6 6
3
8
9

SFH220 & SFH240 FRONT MOWER SERVICE MANUAL
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SMM54F
SMM54F
(1) Mower deck
(2) Drive shaft
(3) Gear case
(4) Drive shaft cover
(5) Gauge wheel
(6) Roller
(7) Blade pulley (middle)
(8) Blade pulley (LH)
(9) Blade pulley (RH)
5 5
1
3
6 2 64
8
7
9

CHAPTER 4. ATTACHING AND DETACHING MOWER DECK
15
4
SMM54F
(In case of attaching SMM54 with the lawn mower
already using SCMA)
A. Preparation for center PTO
a. Detaching the SCMA54, 48 (center discharge mow-
er deck).
(Refer to the section of SCMA DETACHING OF
THE MOWER DECK)
b. Disassemble the mower shooter and tube.
(Refer to the COLLECTOR SECTION)
c. Loosen the bolts and disassemble the cover in front
of the blower.
d. Loosen the center bolt of the blower, and remove
the blower. After that grease up the spline part of
the shaft for easy operation.
B. UP-STOP connection of center PTO lever
a. Check both side PTO lever and center PTO lever
are in the OFF position.
b. Connect the both levers with connecting rod,1.
(Connecting rod is attached as standard.)
(1) Connecting rod
CHAPTER 4. ATTACHING AND DETACHING MOWER DECK
SCMA54F,48F
WARNING: When attaching or detaching the
mower deck to the front mower:
・Place the front mower on level, hard
ground.
・Apply the parking brake securely.
・Shlft the PTO Iever to the STOP (N) posi-
tion.
・Do not start the engine except for operat-
ing the lift lever.
1. ATTACHING THE MOWER DECK
Attach the mower deck first to the front mower and then
connect the drive shaft.
■INSTALLATION OF MOWER DECK
SCMA54F,48F / SMM54
a. Place the mower deck in the front of the front mow-
er and hold the lift lever in the DOWN (d) position.
b. <only for SCMA mower deck>
Bring the front mower close to the mower deck so
the chute hose can be inserted in the blower intake.
c. Insert the right-hand and left-hand arms into the
ends of their respective lift links. Align the setting
holes in the arm and lift link, pass the pin (19x92)
through both setting holes, insert the link pin for re-
tention.
IMPORTANT: When it is difficult to align the hole in the
lift bracket and the hole in the link ball,
never attempt to insert the pin forcibly.
But sway the mower deck right and left
and the pin can be inserted easily.
d. Start the engine and lift up the mower deck. Stop
the engine and fix the fulcrum plate in the back of
the mower deck to the folk under the lift rod in the
back of the lawn mower by inserting lock pin. Lower
the mower deck onto the ground.

SFH220 & SFH240 FRONT MOWER SERVICE MANUAL
16
UP-STOP function check (SFH220/240)
side PTO lever is ON position with lift arm lowest po-
sition
↓
Operate the lift lever to UP.
・Make sure that the side PTO lever is in the off po-
sition when the height of hole center to attach the
mower deck is at 400mm from the ground.
・Make sure that it is not be able to turn to the ON po-
sition at over 400 mm from ground.
Adjust the UP-STOP cable as the height to the position
becomes 400 mm from the ground.
2. ADJUSTMENT OF LINKAGE
2.1. ADJUSTMENT OF MAXIMUM LIFTING HEIGHT
Be sure to adjust the lifting height of each side as fol-
lows.
Max.height:A
SCMA54F A=520mm SMM54F A=520mm
SCMA48F
CAUTION:
Incorrect adjustment may lead hitting be-
tween the step and gear box of mower deck
or shortening of the minimum ground clear-
ance.
2.2. ADJUSTMENT OF UP-STOP HEIGHT
a. Shut off the engine.
b. Turn the PTO Iever to the ON position to lift up the
lower link.
c. Lift the mower deck with the lift system until the
PTO is turned OFF automatically.
d. Measure the height of the lower link pin. It should
be 400mm from ground. If not, adjust the cable.
Adjust the lifting height of each
side (LH & RH) using adjusting bolt.
Be sure to lock with locknut.
Max height:A

CHAPTER 4. ATTACHING AND DETACHING MOWER DECK
17
4
5. ATTACHING THE DRIVE SHAFT
SMM54F
Hold the ring of the universal joint pressed in one side,
and push the joint onto the PTO shaft while aligning the
splines.
(1) Mower deck (3) Ring
(2) Drive shaft
IMPORTANT: After inserting the universal joint of the
drive shaft onto the center PTO shaft of
the front mower, make sure that the ring
of the universal joint is pushed out by
spring force, seated in the groove in the
PTO shaft, and the universal joint does
not come out.
6. DETACHING THE MOWER DECK
Detach the mower deck in reverse order of attaching:
Remove the drive shaft first and then the mower deck.
CAUTION:
Be sure to disconnect the universal joint on
the PTO shaft of the front mower.
IMPORTANT: Be sure to keep the removed parts.
3. ATTACHING THE DRIVE SHAFT
SCMA54,48F
Hold the ring of the universal joint pressed in one side,
and push the joint onto the PTO shaft while aligning the
splines.
(1) Mower deck (3) Ring
(2) Drive shaft
IMPORTANT: After inserting the universal joint of the
drive shaft onto the side PTO shaft of
the front mower, make sure that the ring
of the universal joint is pushed out by
spring force. So, the ring is seated in the
groove in the PTO shaft, in this way, the
universal joint does not come out.
4. DETACHING THE MOWER DECK
Detach the mower deck in reverse order of attaching:
Remove the drive shaft first and then the mower deck.
CAUTION:
Be sure to disconnect the universal joint on
the PTO shaft of the front mower.
IMPORTANT: Be sure to keep the removed parts.
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SFH220 & SFH240 FRONT MOWER SERVICE MANUAL
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CHAPTER 5. MOWER OPERATION
19
5
a. Depress the master brake pedal and shift the PTO
lever to the STOP (N) position. Then start the en-
gine.
b. Raise the mower with the lift system. Then stop the
engine.
c. Remove the spring clip of the front gauge wheel
setting pin. Remove the pin (10x53) while holding
the gauge wheel with the other hand.
d. Select one of the setting holes to get the required
cutting height, insert the pin, and retain it with the
spring clip. The label that is showing the relation-
ships between the setting holes and cutting heights
is stuck on the mower deck.
e. Also set the cutting height of the rear gauge wheels
by re-setting the setting hole for the setting pin with
the ring clip removed.
f. The right and left gauge wheels should be set to the
same cutting height.
g. Shift the lift lever to the DOWN (d) position to lower
the mower deck.
CAUTION :
Before operating the lift lever, be seated in
the operator’s seat and make sure of the
safety conditions when lowering the mower
deck.
CHAPTER 5. MOWER OPERATION
1. BEFORE OPERATION
CAUTION :
・Become familiar with how to operate the
front mower and understand safety in-
structions by reading this manual care-
fully.
・Make sure that all safety covers and
guards are installed in position.
・Make sure that the blade nuts are tight-
ened securely.
・Make sure that the two V-belts are ten-
sioned evenly as specified.
・Before moving the front mower into the
working site, check the whole area and
get rid of all obstacles such as stones,
wood, empty tins, bottles, wires, etc to
assure safe operation.
・Make sure that the mower operation will
not cause any injury to children, animals,
bystanders, or damage to trees, build-
ings, etc.
・Check the place to mow for bumps, ditch-
es, mounds, steps, slopes, inclination,
softness, water pools, etc. ahead of time
to avoid accidents such as turnover, fall,
side-sliding of the front mower.
2. CUTTING HEIGHT ADJUSTMENT
(1) Pin (10x53) (2) Spring clip
1 2

SFH220 & SFH240 FRONT MOWER SERVICE MANUAL
20
(1) PTO lever
(2) Lift lever
CAUTION :
・PTO UP-STOP mechanism works only
while the PTO Iever is in the ON (M) posi-
tion.
・Before starting to mow, make sure that
this mechanism works properly. Be sure
to detach the drive shaft before checking
the PTO UP-STOP mechanism.
・The mechanism restricts to lift up the
mower deck excessively while the mower
blades are rotating.
・When you want to lift up the mower deck
high, shift the PTO Iever to the OFF (N)
position. Never attempt to shift the PTO
Iever to the ON (M) position while the
mower deck is lift up high.
・Before starting to mow, make sure that
the Iift cylinder is set properly.
・Whenever you encounter with any trouble
of the front mower, ask your dealer for re-
pair immediately.
3. STARTING MOWING OPERATION
CAUTION :
・Read the contents of this manual thor-
oughly and carefully and keep safe the
operation in mind.
・Before moving the front mower into
the working site, investigate the whole
site and get rid of all obstacles such as
stones, wood, empty tins, bottles, wires,
etc for operation safety.
・Investigate the site for pits, mounds,
steps, slope angles, ground softness, wa-
ter pools, etc to avoid turning over, falling
down, and side-shifting.
・Also make sure there is no danger of hurt-
ing children, animals, by-standers, etc.
and damaging nearby trees, buildings,
etc. ogawa
a. Start the engine and turn the throttle lever to the
intermediate position between the low speed (t)
and high speed (r) positions.
b. Move the lift lever to the up position (u) to raise the
mower deck.
c. Release the parking brake.
d. Push down the HST forward travel pedal gradually
to drive the front mower into the working site.
e. Release the HST pedal gradually to stop the front
mower.
f. Move the lift lever to the down position (d) to lower
the mower on the ground.
g. Shift the blower PTO lever to the ON (M) position
(only for SFH 240 with collector).
h. Shift the PTO Iever to the ON (M) position.
IMPORTANT:
・When engaging the PTO clutch, slow down the engine
speed sufficiently for safety.
・The lift height and PTO Iever position are intercon-
nected for safety as follows:
- When the mower is lifted up higher than specified with
the PTO Iever shifted in the ON (M) position, the lever
is automatically shifted to the OFF (N) position.
- With the lift raised to the maximum height, the PTO
lever cannot be shifted to the ON (M) position. Never
attempt to move the lever forcibly, or the lever linkage
may be damaged.
1
2