Scag Power Equipment Tiger Cat II STCII-52V-26FT-EFI User manual

PART NO. 03434 Rev.01
PRINTED 9/2019
PRINTED IN USA
© 2020
Scag Power Equipment
Division of Metalcraft of Mayville, Inc.
Congratulations on owning a Scag mower! This manual contains the operating
instructions and safety information for your Scag mower. Reading this manual
can provide you with assistance in maintenance and adjustment procedures to
keep your mower performing to maximum efciency. The specic models that
this book covers are listed on the inside cover. Before operating your machine,
please read all the information enclosed.
OPERATOR’S
MANUAL
Models: STCII-48V-22FX
STCII-52V-25CV-EFI
STCII-52V-26FT-EFI
STCII-61V-26FT-EFI
STCII-61V-32BV

WARNING
FAILURE TO FOLLOW SAFE OPERATING PRACTICES MAY RESULT
IN SERIOUS INJURY OR DEATH.
• Read this manual completely as well as other manuals that came with your mower.
• DO NOT operate on steep slopes. To check a slope, attempt to back up it (with the
cutter deck down). If the machine can back up the slope without the wheels slipping,
reduce speed and use extreme caution.
• Under no circumstances should the machine be operated on slopes greater than 15
degrees. ALWAYS FOLLOW OSHA APPROVED OPERATION.
• Stay two cut widths away from slopes, drop offs, ditches and retaining walls.
• DO NOT mow on wet grass. Wet grass reduces traction and steering control.
• Keep all shields in place, especially the grass discharge chute.
• Before performing any maintenance or service, stop the machine and remove the
spark plug wire and ignition key.
• If a mechanism becomes clogged, stop the engine before cleaning.
• Keep hands, feet and clothing away from power-driven parts.
• Keep others off the mower (only one person at a time)
REMEMBER - YOUR MOWER IS ONLY AS SAFE AS THE OPERATOR!
HAZARD CONTROL AND ACCIDENT PREVENTION ARE DEPENDENT UPON THE AWARENESS,
CONCERN, PRUDENCE, AND PROPER TRAINING OF THE PERSONNEL INVOLVED IN THE
OPERATION, TRANSPORT, MAINTENANCE, AND STORAGE OF THE EQUIPMENT.
This manual covers the operating instructions and illustrated parts list for:
STCII-48V-22FX with a serial number of N8700001 to N8799999
STCII-52V-25CV-EFI with a serial number of N9000001 to N9099999
STCII-52V-26FT-EFI with a serial number of R2200001 to R2299999
STCII-61V-26FT-EFI with a serial number of N9200001 to N9299999
STCII-61V-32BV with a serial number of R3100001 to R3199999
Always use the entire serial number listed on the serial number tag when referring to this product.

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Table of Contents
Table of Contents
SECTION 1 - GENERAL INFORMATION...................................................................................1
1.1 INTRODUCTION...........................................................................................................................................1
1.2 DIRECTION REFERENCE ...........................................................................................................................1
1.3 SERVICING THE ENGINE AND DRIVE TRAIN COMPONENTS.................................................................1
1.4 SYMBOLS ....................................................................................................................................................2
SECTION 2 - SAFETY INFORMATION ......................................................................................3
2.1 INTRODUCTION...........................................................................................................................................3
2.2 SIGNAL WORDS ..........................................................................................................................................3
2.3 BEFORE OPERATION CONSIDERATIONS................................................................................................3
2.4 TESTING THE SAFETY INTERLOCK SYSTEM ..........................................................................................4
2.5 OPERATION CONSIDERATIONS................................................................................................................5
2.6 ROLL-OVER PROTECTION SYSTEM.........................................................................................................6
2.7 MAINTENANCE CONSIDERATIONS & STORAGE ....................................................................................9
2.8 USING A SPARK ARRESTOR.....................................................................................................................9
2.9 SPARK IGNITION SYSTEM .........................................................................................................................9
2.10 SAFETY AND INSTRUCTIONAL DECALS.............................................................................................10
SECTION 3 - SPECIFICATIONS ..............................................................................................11
3.1 ENGINE ......................................................................................................................................................11
3.2 ELECTRICAL .............................................................................................................................................11
3.3 MOWER ......................................................................................................................................................11
3.4 CUTTER DECK ..........................................................................................................................................12
3.5 HYDRAULIC SYSTEM ...............................................................................................................................12
3.6 WEIGHTS AND DIMENSIONS ...................................................................................................................12
3.7 PRODUCTIVITY .........................................................................................................................................12
SECTION 4 - OPERATING INSTRUCTIONS ...........................................................................13
4.1 TIGER EYE INSTRUMENT IDENTIFICATION ...........................................................................................13
4.2 CONTROLS IDENTIFICATION ..................................................................................................................15
4.3 SAFETY INTERLOCK SYSTEM ................................................................................................................16
4.4 TESTING THE SAFETY INTERLOCK SYSTEM ........................................................................................16
4.5 INITIAL RUN-IN PROCEDURES................................................................................................................17
4.6 STARTING THE ENGINE ...........................................................................................................................17
4.7 GROUND TRAVEL AND STEERING .........................................................................................................17
4.8 ENGAGING THE DECK DRIVE (CUTTER BLADES)................................................................................18
4.9 HILLSIDE OPERATION..............................................................................................................................19
4.10 PARKING THE MOWER ...........................................................................................................................19
4.11 AFTER OPERATION ................................................................................................................................19
4.12 REMOVING CLOGGED MATERIAL ........................................................................................................19

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4.13 MOVING MOWER WITH ENGINE STOPPED..........................................................................................20
4.14 RECOMMENDATIONS FOR MOWING....................................................................................................20
4.15 ADJUSTING CUTTING HEIGHT..............................................................................................................21
4.16 TOWING (OPTIONAL HITCH ACCESSORY)...........................................................................................21
SECTION 5 - TROUBLESHOOTING CUTTING CONDITIONS ...............................................22
SECTION 6 - ADJUSTMENTS .................................................................................................25
6.1 PARKING BRAKE ADJUSTMENT ............................................................................................................25
6.2 TRAVEL ADJUSTMENTS ..........................................................................................................................25
6.3 THROTTLE CONTROL AND CHOKE ADJUSTMENTS ............................................................................27
6.4 BELT ADJUSTMENT .................................................................................................................................27
6.5 BELT ALIGNMENT.....................................................................................................................................27
6.6 CUTTER DECK ADJUSTMENTS ..............................................................................................................27
6.7 CUSTOM-CUT BAFFLE ADJUSTMENT ...................................................................................................29
6.8 ELECTRIC CLUTCH ADJUSTMENT.........................................................................................................30
SECTION 7 - MAINTENANCE..................................................................................................32
7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS ......................................................32
7.2 LUBRICATION............................................................................................................................................33
7.3 HYDRAULIC SYSTEM ...............................................................................................................................35
7.4 ENGINE OIL ...............................................................................................................................................36
7.5 ENGINE FUEL SYSTEM ............................................................................................................................36
7.6 ENGINE AIR CLEANER.............................................................................................................................37
7.7 BATTERY....................................................................................................................................................38
7.8 DRIVE BELTS.............................................................................................................................................38
7.9 CUTTER BLADES......................................................................................................................................39
7.10 TIRES........................................................................................................................................................40
7.11 BODY, DECK, AND UPHOLSTERY .........................................................................................................41

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Table of Contents
SECTION 8 - ILLUSTRATED PARTS LIST ..............................................................................42
SCAG APPROVED ATTACHMENTS AND ACCESSORIES............................................................................42
48V & 52V CUTTER DECKS ...........................................................................................................................44
61V CUTTER DECK.........................................................................................................................................46
CUTTER DECK CONTROLS ...........................................................................................................................48
SHEET METAL COMPONENTS ......................................................................................................................50
STCII FOLDABLE ROLL-OVER PROTECTION SYSTEM ..............................................................................52
STCII SUSPENSION SEAT ..............................................................................................................................54
DRIVE SYSTEM COMPONENTS ....................................................................................................................56
ENGINE & ATTACHING PARTS.......................................................................................................................58
STEERING COMPONENTS.............................................................................................................................60
BRAKE COMPONENTS ..................................................................................................................................62
HYDRAULIC SYSTEM .....................................................................................................................................64
STCII FUEL SYSTEM.......................................................................................................................................66
ELECTRICAL SYSTEM ...................................................................................................................................68
ELECTRICAL SYSTEM - KAWASAKI 26FT-EFI .............................................................................................70
ELECTRICAL SYSTEM - KOHLER EFI...........................................................................................................72
STCII HYDRAULIC PUMP ASSEMBLY...........................................................................................................74
REPLACEMENT DECALS AND INFORMATION PLATES .............................................................................76
STCII ELECTRICAL SCHEMATIC ...................................................................................................................78
STCII KAWASAKI ENGINE ADAPTER ELECTRICAL SCHEMATIC..............................................................79
STCII BRIGGS & STRATTON ENGINE ADAPTER ELECTRICAL SCHEMATIC ...........................................79
STCII - KAWASAKI 26FT EFI ELECTRICAL SCHEMATIC ............................................................................80
STCII - KOHLER CV EFI ELECTRICAL SCHEMATIC ....................................................................................81
LIMITED WARRANTY - COMMERCIAL EQUIPMENT............................Inside Back Cover

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Table of Contents

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Section 1
1.1 INTRODUCTION
Your mower was built to the highest standards in the
industry. However, the prolonged life and maximum
efficiency of your mower depends on you following the
operating, maintenance and adjustment instructions in
this manual.
If additional information or service is needed, contact your
Scag Power Equipment Dealer.
We encourage you to contact your dealer for repairs. All
Scag dealers are informed of the latest methods to service
this equipment and provide prompt and efficient service in
the field or at their service shop. They carry a full line of
Scag service parts.
THE REPLACEMENT OF ANY PART ONTHIS PRODUCT
BY OTHERTHANTHE MANUFACTURER'S AUTHORIZED
REPLACEMENT PART MAY ADVERSELY AFFECT THE
PERFORMANCE, DURABILITY OR SAFETY OF THIS
PRODUCT.
USE OF OTHERTHAN ORIGINAL SCAG REPLACEMENT
PARTS WILL VOID THE WARRANTY.
When ordering parts, always give the model and serial
number of your mower. The serial number plate is located
where shown in Figure 1-1.
Model
Serial
STC 2016 SPL-1
SERIAL NUMBER
PLATE LOCATION
Power Equipment
SCAG
Figure 1-1. Mower Serial Number Plate Location
GENERAL INFORMATION
USE ONLY SCAG APPROVED ATTACHMENTS AND
ACCESSORIES.
Attachments and accessories manufactured by companies
other than Scag Power Equipment are not approved for use
on this machine. See Section 8, Paragraph 8-1.
WARNING
For pictorial clarity, some illustrations and figures
in this manual may show shields, guards or plates
open or removed. Under no circumstances should
your mower be operated without these devices
in place.
All information is based upon product information available
at the time of approval for printing. Scag Power Equipment
reserves the right to make changes at any time without
notice and without incurring any obligation.
1.2 DIRECTION REFERENCE
The “Right” and “Left”, “Front” and “Rear” of the machine are
referenced from the operator’s right and left when seated
in the normal operating position and facing the forward
travel direction.
1.3 SERVICING THE ENGINE AND DRIVE
TRAIN COMPONENTS
The details of servicing and repair of the engine, hydraulic
pumps and gearboxes are not covered in this manual; only
routine maintenance and general service instructions are
provided. For service of these components during the
limited warranty period, it is important to contact your
Scag dealer or find a local authorized servicing agent of
the component manufacturer. Any unauthorized work done
on these components during the warranty period may void
your warranty.

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Section 1
1.4 SYMBOLS
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
Choke Transmission
Parking Brake
48071S
Spinning Blade
On/Start Spring Tension on Idler
Off/Stop Oil
Falling Hazard Thrown Object Hazard
Fast Slow
Continuously Variable - Linear Cutting Element - Basic Symbol
481039S
Pinch Point Cutting Element - Engage
Hour meter/Elapsed Operating Hours Cutting Element - Disengage
Keep Bystanders Away Read Operator's Manual

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Section 2
2.1 INTRODUCTION
Your mower is only as safe as the operator. Carelessness
or operator error may result in serious bodily injury
or death. Hazard control and accident prevention are
dependent upon the awareness, concern, prudence, and
proper training of the personnel involved in the operation,
transport, maintenance and storage of the equipment. Make
sure every operator is properly trained and thoroughly
familiar with all of the controls before operating the
mower. The owner/user can prevent and is responsible for
accidents or injuries occurring to themselves, other people
or property.
READ THIS OPERATOR’S MANUAL AND WATCH THE
TIPS FOR SAFE OPERATION OF YOUR SCAG ZERO-
TURN MOWER VIDEO BEFORE ATTEMPTING TO
START YOUR MOWER.
A replacement manual is available from your authorized
Scag Service Dealer or by contacting Scag Power
Equipment, Service Department at P.O. Box 152, Mayville,
WI 53050 or contact us via the Internet at www.scag.com.
The manual for this machine can be downloaded by using
the model and serial number or use the contact form to
make your request. Please indicate the complete model
and serial number of your Scag product when requesting
replacement manuals.
2.2 SIGNAL WORDS
This symbol means “Attention! Become Alert! Your
Safety is Involved!" The symbol is used with the following
signal words to attract your attention to safety messages
found on the decals on the machine and throughout this
manual. The message that follows the symbol contains
important information about safety. To avoid injury and
possible death, carefully read the message! Be sure to fully
understand the causes of possible injury or death.
SIGNAL WORD:
It is a distinctive word found on the safety decals on the
machine and throughout this manual that alerts the viewer
to the existence and relative degree of the hazard.
DANGER
The signal word “DANGER” denotes that an extremely
hazardous situation exists on or near the machine that
could result in high probability of death or irreparable injury
if proper precautions are not taken.
WARNING
The signal word “WARNING” denotes that a hazard exists
on or near the machine that can result in injury or death if
proper precautions are not taken.
CAUTION
The signal word “CAUTION” is a reminder of safety practices
on or near the machine that could result in personal injury
if proper precautions are not taken.
Your safety and the safety of others depends significantly
upon your knowledge and understanding of all correct
operating practices and procedures of this machine.
2.3 BEFORE OPERATION
CONSIDERATIONS
WARNING
Check all hydraulic connections for tightness.
Inspect all hydraulic hoses and / or lines to insure
they are in good condition before operating.
1. NEVER allow children to operate this riding mower.
Do not allow adults to operate this machine without
proper instructions.
2. Do not mow when children and/or others are
present. Keep children out of the mowing area and
in the watchful care of a responsible adult other than
the operator. Be alert and turn machine off if a child
enters the area.
SAFETY INFORMATION

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Section 2
3. DO NOT allow children to ride or play on the
machine, it is not a toy.
4. Clear the area to be mowed of objects that could be
picked up and thrown by the cutter blades.
5. DO NOT carry passengers.
6. DO NOT operate the machine under the influence of
alcohol or drugs.
7. If the operator(s) or mechanic(s) cannot read
English, it is the owner's responsibility to explain this
material to them. A Spanish decal kit is available for
this model. See your local Scag Dealer.
8. DO NOT wear loose fitting clothing. Loose clothing,
jewelry or long hair could get tangled in moving
parts. Do not operate the machine wearing shorts;
always wear adequate protective clothing including
long pants. Wearing safety glasses, safety shoes and
a helmet is advisable and is required by some local
ordinances and insurance regulations.
WARNING
Always wear hearing protection. Operating this
machine over prolonged periods of time can
cause loss of hearing.
9. Keep the machine and attachments in good
operating condition. Keep all shields and safety
devices in place. If a shield, safety device or decal
is defective or damaged, repair or replace it before
operating the machine.
10. Fuel is flammable; handle it with care. Fill the fuel
tank outdoors. Never fill it indoors. Use a funnel or
spout to prevent spillage. Clean up any spillage
before starting the engine.
11. DO NOT add fuel to a running or hot engine. Allow
the engine to cool for several minutes before adding
fuel. Never fuel indoors or inside enclosed trailers.
12. Keep flammable objects (cigarettes, matches, etc.),
open flames and sparks away from the fuel tank and
fuel container. Use only approved containers.
13. See Section 7.5 ENGINE FUEL SYSTEM for fueling
procedure.
14. Equipment must comply with the latest requirements
per SAE J137 and/or ANSI/ASAE S279 when driven
on public roads.
- NOTE -
If the mower is driven on public roads, it must
comply with state and local ordinances as well as
SAE J137 and/or ANSI / ASAE S279 requirements.
Contact your local authorities for regulations and
equipment requirements.
15. Do not operate without the side discharge chute
installed and in the down position or with an optional
grass catcher or mulch plate completely installed.
16. Check the blade mounting bolts at frequent intervals
for proper tightness.
17. Make sure all hydraulic fluid connections are tight
and all hydraulic hoses and lines are in good
condition before starting the machine.
WARNING
This machine is equipped with an interlock system
intended to protect the operator and others from
injury. This is accomplished by preventing the
engine from starting unless the deck drive is
disengaged, the parking brake is on, the steering
control levers are in the neutral position and the
operator is in the seat. The system shuts off the
engine if the operator leaves the seat with the deck
drive engaged and/or the steering control levers
are not in the neutral position and the parking
brake is not engaged. Never operate equipment
with the interlock system disconnected or
malfunctioning.
18. Be sure the interlock switches are functioning
correctly
2.4 TESTING THE SAFETY INTERLOCK
SYSTEM
The safety interlock system should be tested each time
before using the machine. If the safety interlock system
does not operate as described below, contact your local
Authorized Scag Power Equipment Dealer immediately to
have the safety interlock system repaired.
1. Sit in the seat in the operating position, engage the
parking brake, place the steering control levers in
the neutral lock position, and engage the PTO switch
to the ON (up) position. Try to start the engine; the
engine should not start.

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Section 2
2. Sit in the seat in the operating position, engage the
parking brake, move either of the steering control
handles out of the neutral lock position, move the
PTO switch to the OFF (down) position. Try to start
the engine; the engine should not start. Repeat for
the other steering control lever.
3. Sit in the seat in the operating position, disengage
the parking brake, place the steering control levers
in the neutral lock position, move the PTO switch to
the OFF (down) position. Try to start the engine; the
engine should not start.
4. Sit in the seat in the operating position, engage the
parking brake, place the steering control levers in
the neutral lock position, move the PTO switch to the
OFF (down) position, and start the engine. With the
engine running, release the parking brake and rise
slightly off of the seat. The engine should shut off.
5. Sit in the seat in the operating position, engage the
parking brake, place the steering control levers in
the neutral lock position, move the PTO switch to the
OFF (down) position, and start the engine. With the
engine running, engage the PTO switch to the ON
(up) position, and rise slightly off of the seat. The
engine should shut off.
6. Sit in the seat in the operating position, engage the
parking brake, place the steering control levers in
the neutral lock position, move the PTO switch to the
OFF (down) position, and start the engine. With the
engine running, move either steering control lever
out of the neutral lock position. The engine should
shut off. Repeat for the other steering control lever.
2.5 OPERATION CONSIDERATIONS
1. Know the function of all controls and how to stop
quickly.
WARNING
DO NOT operate on steep slopes.To check a slope,
attempt to back up it (with the cutter deck down).
If the machine can back up the slope without the
wheels slipping, reduce speed and use extreme
caution. Under no circumstances should the
machine be operated on slopes greater than 15
degrees. See Figure 2-4, Page 8 to determine
approximate slope of area to be mowed. ALWAYS
FOLLOW OSHA APPROVED OPERATION.
2. Reduce speed and exercise extreme caution on
slopes and in sharp turns to prevent tipping or loss
of control. Be especially cautious when changing
directions on slopes.
3. Stay two cut widths away from slopes, drop offs,
ditches and retaining walls.
4. To prevent tipping or loss of control, start and stop
smoothly, avoid unnecessary turns and travel at
reduced speed.
5. Immediately apply the parking brake if you lose
steering control while operating. Inspect the machine
and correct the problem before continuing to operate.
6. When using any attachment, never direct the
discharge of material toward bystanders or allow
anyone near the machine while in operation.
7. Before attempting to start the engine, with the
operator in the seat, disengage power to the cutter
deck, place the steering control levers in the neutral
position and engage the parking brake.
8. If the mower discharge ever plugs, shut off the
engine, remove the ignition key, and wait for all
movement to stop before removing the obstruction.
WARNING
DO NOT use your hand to dislodge the clogged
discharge chute. Use a stick or other device to
remove clogged material after the engine has
stopped running and the blades have stopped
turning.
9. Be alert for holes, rocks, roots and other hidden
hazards in the terrain. Keep away from any drop-
offs. Beware of overhead obstructions (low limbs,
etc.), underground obstacles (sprinklers, pipes, tree
roots, etc.). Cautiously enter a new area. Be alert for
hidden hazards.
10. Disengage power to cutter deck before backing up.
Do not mow in reverse unless absolutely necessary
and then only after observation of the entire area
behind the mower. If you must mow in reverse,
maintain a constant lookout to the rear of the
machine and mow slowly.
11. DO NOT turn sharply. Use care when backing up.
12. Disengage power to cutter deck before crossing
roads, walks or gravel drives.

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Section 2
22. Tie the mower down securely using straps, chains,
cable, or ropes. Both front and rear straps must be
directed down and outward from machine.
23. Use care when approaching blind corners, shrubs,
trees, or other objects that may obscure vision.
24. NEVER leave the machine running unattended.
2.6 ROLL-OVER PROTECTION SYSTEM
WARNING
Keep the roll bar in the raised and locked position
and the seat belt securely fastened during
operation. Failure to do so could cause serious
injury or loss of life.
This mower has been designed for good traction and
stability under normal mowing conditions. However, caution
must be used when traveling on slopes, especially when the
grass is wet. Do not mow on wet grass.Wet grass reduces
traction and steering control.
Any or all parts of the Roll-Over Protection System MUST
NOT be removed. Failure to adhere to this guideline could
result in injury or death.
13. Mow only in daylight or good artificial light.
14. NEVER raise the deck with the blades engaged.
15. Take all possible precautions when leaving the
machine unattended, such as disengaging the
mower, lowering the attachments, setting the parking
brake, stopping the engine, and removing the key.
16. Disengage power to the attachments when
transporting or when not in use.
17. The machine and attachments should be stopped
and inspected for damage after striking a foreign
object, and damage should be repaired before
restarting and operating the machine.
CAUTION
Do not touch the engine or the muffler while the
engine is running or immediately after stopping.
These areas may be hot enough to cause a
burn.
DANGER
DO NOT run the engine inside a building or
a confined area without proper ventilation.
Exhaust fumes are hazardous and contain
carbon monoxide which can cause brain injury
and death.
18. Keep hands and feet away from cutter blades and
moving parts. Contact can injure.
19. Transport the mower using a heavy duty trailer
or truck. Insure the trailer or truck has all of the
necessary lighting and markings as required by
laws, codes, and ordinances. Secure a trailer with a
safety chain.
20. Be cautious when loading and unloading onto trailers
or trucks. Use only a full width ramp. Ramp angle
should be no more than 15 degrees. See Figure 2-4,
Page 8 to determine approximate slope of the ramp.
Back up the ramp and drive down forward.
21. When transporting the mower, make sure the park
brake is engaged, the steering control levers are in
the neutral position, the engine is off with the key
removed, and the wheels have been blocked.

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Section 2
WARNING
There is no roll-over protection when the roll bar
is in the down position.
Lower the roll bar only when absolutely
necessary.
Raise the roll bar as soon as clearance permits.
DO NOT wear the seat belt when the roll bar is in
the down position.
ALWAYS wear seat belt when roll bar is in the up
position.
Operate the machine smoothly, no sudden turns,
starts or stops.
Check the area carefully before mowing for proper
overhead clearance (i.e. branches, doorways,
etc.).
DO NOT contact any overhead object with the
roll bar.
Lower the roll bar only when absolutely necessary.
1. To lower the roll bar, remove the hairpin cotter pins
and remove the two (2) lock pins. See Figure 2-2.
2. Lower the roll bar to the down position.
3. To raise the roll bar, lift the bar to the upright
position.
4. Install the two (2) lock pins through the hole, secure
with the two (2) hairpin cotter pins. See Figure 2-2.
UPRIGHT AND
LOCKED POSITION
Figure 2-1. Foldable Roll-Over Protection System
HAIR PIN
LOCK PIN
Figure 2-2. ROPS Hinge
The potential exposure of the seat belt to severe
environmental conditions make it crucial to inspect the seat
belt system regularly.
It is recommended that the seat belt be inspected on a
daily basis for signs of damage. Any seat belt system that
shows cuts, fraying, extreme or unusual wear, significant
discoloration due to UV exposure, dirt or stiffness, abrasion
to the seat belt webbing, or damage to the buckle, latch
plate, hardware or any other obvious problem should be
replaced immediately.
WARNING
Failure to properly inspect and maintain the seat
belt can cause serious injury or loss of life.

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Section 2
1. Check the full length of the seat belt webbing for
cuts, wear, fraying, dirt and stiffness. See Figure 2-3.
2. Check the seat belt webbing in areas exposed to
ultra violet rays from the sun or extreme dust or
dirt. If the original color of the webbing in these
areas is extremely faded and/or is packed with dirt,
the physical strength of this webbing may have
deteriorated. If this condition exists, replace the seat
belt system.
3. Check the buckle and latch for proper operation
and determine if the latch plate is excessively worn,
deformed, or if the buckle is damaged or cracked.
See Figure 2-3.
INSPECT WEBBING
INSPECT BUCKLE
& LATCH
Figure 2-3. Seat Belt Inspection
5o
10o
15o
20o
Figure 2-4. Slope Angle Graph
WARNING
Reduce speed when turning, operating on slopes,
slick or wet surfaces. Allow extra distance to
stop.
Stay off of slopes too steep for safe operation.
To check a slope, attempt to back up it (with the
cutter deck down). If the machine can not back
up the slope without the wheels slipping, do not
operate the machine on this slope. Under no
circumstances should the machine be operated
on slopes greater than 15 degrees. See Figure 2-4
to determine approximate slope.
DO NOT mow near drop-offs, ditches or
embankments. The machine could suddenly roll
over if a wheel goes over the edge or if the edge
caves in.
Operate the machine smoothly, no sudden turns,
starts or stops on a slope.
NEVER tow on slopes. The weight of the towed
equipment may cause loss of traction and loss
of control.
DO NOT permit untrained personnel to operate
the machine.
Be cautious when loading and unloading onto
trailers or trucks.
Use only a full width ramp.
Ramp angle should be no more than 15 Degrees.
See Figure 2-4 to help determine approximate
slope.
Back up the ramp and drive down forward.

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Section 2
2.7 MAINTENANCE CONSIDERATIONS &
STORAGE
1. Never make adjustments to the machine with the
engine running unless specifically instructed to do
so. If the engine is running, keep hands, feet, and
clothing away from moving parts.
2. Disengage drives, lower implement, set parking
brake, stop engine and remove key or disconnect
spark plug wire to prevent accidental starting of the
engine when servicing or adjusting the machine.
Wait for all movement to stop before adjusting,
cleaning or repairing.
3. Disconnect battery or remove spark plug wire before
making any repairs. Disconnect the negative terminal
first and the positive last. Reconnect the positive first
and the negative last.
4. Keep all nuts, bolts and screws tight, to ensure the
machine is in safe working condition. Check blade
mounting bolts frequently to be sure they are tight.
5. Do not change the engine governor settings or
overspeed the engine. See the engine operator's
manual for information on engine settings.
6. To reduce fire hazard, keep the cutting units, drives,
muffler and engine free of grass, leaves, excessive
grease, oil and dirt.
7. Park the machine on level ground and engage the
parking brake.
8. NEVER allow untrained personnel to service the
machine.
9. Use care when checking blades. Use a Blade Buddy,
wrap the blade(s) or wear gloves and USE CAUTION
when servicing blades. Only replace blades. NEVER
straighten or weld blades.
10. Keep all parts in good working condition. Replace all
worn or damaged decals.
11. Use jack stands to support components when
required.
12. Carefully release pressure from components with
stored energy.
WARNING
Hydraulic fluid is under high pressure and can
penetrate skin causing injury. If hydraulic fluid
is injected into the skin, it must be surgically
removed within a few hours by a doctor or
gangrene may result.
Keep body and hands away from pinholes or
nozzles that eject hydraulic fluid under high
pressure.Use paper or cardboard and not hands
to search for leaks.
Safely relieve all pressure from the hydraulic
system by placing the control levers in the neutral
lock position and shutting off the engine before
performing any work on the hydraulic system.
If you need service on your hydraulic system,
please see your authorized Scag dealer.
13. Let the engine cool before storing.
14. DO NOT store the machine near an open flame.
15. Shut off fuel while storing or transporting.
16. DO NOT store fuel near flames or drain indoors.
17. Charge batteries in an open, well ventilated area,
away from spark and flames. Unplug charger before
connecting or disconnecting from battery. Wear
protective clothing and use insulated tools.
2.8 USING A SPARK ARRESTOR
The engine in this machine is not equipped with a spark
arrestor muffler. It is in violation of California Public
Resource Code Section 4442 to use or operate this engine
on or near any forest covered, brush covered or grass
covered land unless the exhaust system is equipped with
a spark arrestor meeting any applicable local or state laws.
Other states or federal areas may have similar laws. Check
with your state or local authorities for regulations pertaining
to these requirements.
2.9 SPARK IGNITION SYSTEM
This spark ignition system complies with Canadian
ICES-002.

10
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Section 2
2.10 SAFETY AND INSTRUCTIONAL DECALS
483407
483402
483397
483406
483300
483633
483425
Molded in Fuel Tank
FORWARD
REVERSE
FR
WARNING
INSTALL BELT COVER BEFORE
OPERATING MACHINE
READ OPERATOR'S MANUAL
WARNING
Operation of this equipment
may create sparks that can
start fires around dry
vegetation. A spark
arrestor may be required.
The operator should contact
local fire agencies for laws
or regulations relating to
fire prevention requirements.
483900
483900
(supplied with California models only)
!
Avoid injury from burns.
Shut off engine before
removing fuel tank cap.
Avoid injury from burns
- Shut off engine
- Allow to cool several minutes
- Remove cap slowly
- Do not overfill

11
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Section 3
SPECIFICATIONS
3.1 ENGINE
General Type ................................................................................................Heavy Duty Industrial/Commercial Gasoline
Brand ......................................................................................................................................................Kohler, Kawasaki
Engine Model:
Scag Model STCII-48V-22FX ..........................................................................................................Kawasaki FX691V
Scag Model STCII-52V-25CV-EFI ....................................................................................................... Kohler ECV740
Scag Model STCII-52V-26FT-EFI .................................................................................................... Kawasaki FT730V
Scag Model STCII-61V-26FT-EFI .................................................................................................... Kawasaki FT730V
Scag Model STCII-61V-32BV........................................................................................ Briggs and Stratton Vanguard
Displacement:
Kohler ECV740................................................................................................................................................... 747cc
Briggs and Stratton............................................................................................................................................. 896cc
Kawasaki 22FX, 26FT (FX691V, FT730V) ......................................................................................................... 726cc
Type ..........................................................................................................4 Cycle Gasoline, Twin Cylinder, Vertical Shaft
Cylinders..................................................................................................................................... 2 with Cast Iron Sleeves
Governor........................................................................Mechanical Type with Variable Speed Control Set At 3600 RPM
Kawasaki FT730V ................................................................................................... Integrated Electronic - 3600 RPM
Idle Speed:
Kohler .......................................................................................................................................................... 1900 RPM
Briggs and Stratton...................................................................................................................................... 1750 RPM
Kawasaki ..................................................................................................................................................... 1550 RPM
Fuel Pump ...................................................................................................... Integral Fuel Pump with In-Line Fuel Filter
Fuel...................................................................................... Non-Leaded Gasoline with a Minimum Octane Rating of 87
Oil Pump........................................................................................................................ Positive Displacement Gerotor™
Starter:
Kawasaki FX / FT, Kohler, & Briggs and Stratton ..................................... Electric Starting with Solenoid Shift Starter
Belts.................................................................................................................Kevlar cord. Self-adjusting, Self-tightening
3.2 ELECTRICAL
Battery .................................................................................................................................................................... 12 Volt
Charging System............................................................................................................................................... Alternator
Charging Output:
Kohler ..................................................................................................................................................12 Volt, 15 Amp
Kawasaki .............................................................................................................................................12 Volt, 13 Amp
System Polarity....................................................................................................................................... Negative Ground
Starter.................................................................................12 Volt Electric Ring Gear Type, Key and Solenoid Operated
Interlock Switches....................................................... Seat, Neutral Control, Mower Engagement (PTO), Parking Brake
Instrument Panel ....................................................Tiger Eye Advanced Monitoring System, Key Switch, Throttle Lever,
Manual Choke (Non-EFI), PTO Switch, Fuses and Check Engine Indicator (EFI)
Fuses........................................................................................................................................................ Two (2) 20 Amp
3.3 MOWER
Drive System ............... Hydraulic Drive with Two Variable Displacement Pumps and Two Cast-iron High-Torque Motors
Hydrostatic Pumps .............................. Two Hydro-Gear™ 12 cc/rev. Pumps with Fans and Dump Valves for movement
without running the engine
Drive Wheel Motors .........................................................................................Two Parker Cast-Iron High-Torque Motors
Steering/Travel Control ...........................................................................................Twin Lever Fingertip Steering Control
with Individual Control to Each Wheel with Gas Spring Dampers
Parking Brake .......................................................... Foot Pedal Actuated Linkage to Brakes on Both Drive Wheel Axles

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Section 3
Wheels:
(2) Front Caster (48"-52" Deck)....................................................13 X 5-6 Four-Ply w/Tapered Roller Bearing Pivots
(2) Front Caster Wheel (61" Deck) ............................................ 13 x 6.5-6 Four-Ply w/Tapered Roller Bearing Pivots
(2) Drive - (48"-52" Deck) ............................................... 24 X 9.50 X 12 Four-Ply Pneumatic Tubeless, Radius Edge
(2) Drive - (61" Deck).......................................................... 24 x 12 x 12 Four-Ply Pneumatic Tubeless, Radius Edge
Tire Pressure:
Front Caster....................................................................................................................................................Flat Free
Drive .................................................................................................................................................................. 12 PSI
Fuel Tanks ........... Dual (5.3 Gal. RH, 5.7 Gal. LH) Seamless Roto-Low Perm. Tanks with Large Opening and Fuel Cap
Seat .................................................................................................... Padded, Thick Cushion with Extra Spring Support
Travel Speed:
Forward ............................................................................................................................................... 0 up to 12 MPH
Reverse ................................................................................................................................................. 0 up to 5 MPH
-NOTE- The machine will travel up to 12 mph for transport purposes. For best cutting performance the forward
travel speed should be adjusted depending upon the cutting conditions.
3.4 CUTTER DECK
Type ......................... Floating, Adjustable, Anti-Scalping, Hybrid Design Combines Out-Front and Belly-Mount Designs
Construction ............................................................................................................................ Tri-plate deck construction
Top of deck consists of three steel plates totaling nearly 1/2" of steel,7-gauge (3/16") deck skirt.
True Cutting Width:
48V........................................................................................................................................................48" (122.0 cm)
52V........................................................................................................................................................52" (132.0 cm)
61V......................................................................................................................................................61" (154.94 cm)
Cutting Height Adjustment........Foot-Operated Lever Adjustment from Operator's Seat, 1.00" to 5.5" in 1/4" increments
Cutter Blades............................................................................................... 0.197 in. Thick, Milled Edge, Wear Resistant
Blade Engagement............................................................Electric Blade Engagement Clutch with Control Panel Switch
Connected to the Cutter Deck through a Belt.
Discharge Opening.................... Extra Wide Discharge Opening with Spring-Loaded Discharge Chute and Turbo Baffle
Discharge Chute...................................................................................................Black, Polypropylene (Plastic), Flexible
Spindles......................................Heavy-Duty 1-1/8" Top Dimension Spindle Shaft, Cast Housing, Taper Roller Bearing,
Low Maintenance with Top Access Grease Fitting and Grease Overfill Relief Poppet
Spindle Pulleys ............................................................................................ Split Steel with Easily Removed Taper Hubs
Cutter Deck Belts......................................B-section and Cogged Type with Kevlar Cord. Self-Adjusting, Self-Tightening
Electric Clutch Type ................................................................................................Ogura Heavy Duty PTO Clutch Brake
3.5 HYDRAULIC SYSTEM
Hydraulic Oil Filter ......................................................................................................... 10 Micron Spin-on Element Type
Hydraulic Reservoir .....................................................................................................................Nylon; 4 Quart Capacity
3.6 WEIGHTS AND DIMENSIONS 48V 52V 61V
Length......................................................................................... 81" ...............................81.5" ................................85.5"
Tracking Width ............................................................................ 47" ..............................48.75" ...............................51.5"
Overall Width w/chute down ...................................................... 60.5"..............................64.5" ................................73.5"
Overall Width w/chute up.......................................................... 49.75"............................53.75" .............................62.75"
Overall Height w/ROPS (up on Folding Models) ...................... 67.25"............................67.25".............................67.25"
Overall Height w/ROPS down (Folding Models)....................... 46.75"............................46.75" .............................46.75"
Operating Weight w/ROPS ....................................................... 1171#....................... 1175-1180# ...............1255-1288#
3.7 PRODUCTIVITY 48V 52V 61V
Cutting Width .............................................................................. 48" ................................ 52" ....................................61"
Acres Per Day.............................................................................18.6 .............................. 20.2.................................. 23.7
The preceding chart will aid you in determining how many acres your Scag mower will cut per day. The chart is an
estimate based on 8 hours per day cutting time at 6 MPH with a 20% allowance for overlap and turns.

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Section 4
CAUTION
Do not attempt to operate this mower unless you
have read this manual. Learn the location and
purpose of all controls and instruments before
you operate this mower.
Before operating the mower, familiarize yourself with all
mower and engine controls. Knowing the location, function
and operation of these controls is important for safe and
efficient operation of the mower.
This machine is equipped with the Tiger Eye Advanced
Monitoring System. With the key in the on position, before
starting the engine, the lights for the Seat Indicator, PTO
Indicator, Neutral Indicator and Park Brake Indicator should
be illuminated. This indicates there is an operator in the
seat, the PTO is off, steering levers are in neutral, and the
parking brake is applied. When all the lights are illuminated,
the key can be turned to the start position and the mower
can be started. See Section 4.3 Safety Interlock System. If
any of these indicator lights are not illuminated, the engine
will be prevented from starting. If additional information or
service is needed, contact your Scag Power Equipment
Dealer.
4.1 TIGER EYE INSTRUMENT
IDENTIFICATION
1. Service Air Filter Indicator (Figure 4-1). Optional
Accessory. Indicates the condition of the engine air
filter. Icon will display when it is time to change the
air filter.
2. Glow Plug Indicator (Figure 4-1). Used on Diesel
Powered Units Only. Indicator turns on when the
key switch is turned to the PREHEAT position. Glow
plugs must be preheated for 5 to 10 seconds before
starting the engine.
3. Oil Pressure Indicator (Figure 4-1). Used on
Diesel Powered Units Only. Indicates engine oil
pressure. Reference the engine operator's manual
for further information.
4. Service Engine Indicator (Figure 4-1). Indicates
the maintenance reminder for the engine oil change.
Has preset maintenance reminder and will start
flashing scheduled maintenance 2 hours before
preset time and continue flashing until 2 hours after.
Automatically resets.
OPERATING INSTRUCTIONS
5. Voltmeter Indicator (Figure 4-1). Indicates the
condition of the charging system. When the engine
is running, in normal operating conditions, the bar
graph should be in the 12 to 14 volt range.
6. Seat Indicator (Figure 4-1). Light will illuminate
when the operator is in the seat engaging the seat
switch.
7. PTO Indicator (Figure 4-1). Light will illuminate
when the PTO (mower deck) switch is in the OFF
position.
8. Hourmeter Indicator (Figure 4-1). Indicates the
number of hours the engine has been operated.
It only operates when the engine is running. Will
start flashing with the Service Engine Indicator
at scheduled maintenance 2 hours before preset
time and continue flashing until 2 hours after.
Automatically resets.
9. Neutral Indicator (Figure 4-1). Light will illuminate
when the steering control levers are in the neutral
lock position.
10. Park Brake Indicator (Figure 4-1). Light will
illuminate when the park brake is in the engaged
(ON) position.
11. Water Temperature Indicator (Figure 4-1). Used
on Liquid Cooled Models Only. Indicates the
operating temperature of the engine. If the engine
temperature exceeds the maximum preset value, the
indicator will flash and the Park Brake, PTO, Seat
and Neutral indicator lights will flash in an alternating
pattern.
12. Fuse Holders (Figure 4-2). Two 20-amp fuses
protect the mower’s electrical system. To replace
fuses, pull fuse out of the socket and install a new
fuse.

14
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Section 4
PARKING BRAKE
INDICATOR
NEUTRAL
INDICATOR
SEAT
INDICATOR
PTO
INDICATO
R
WATER TEMPERATURE
INDICATOR
VOLTMETER
INDICATOR
SERVICE ENGINE
INDICATOR
OIL PRESSURE
INDICATOR
GLOW PLUG
INDICATOR
SERVICE AIR
FILTER INDICATOR
HOUR METER
INDICATOR
Figure 4-1. Tiger Eye Advanced Monitoring System
12V
DECK LIFT
SUSPENSION SEAT
CONTROL KNOB
LEFT STEERING
CONTROL
BRAKE
PEDAL
PARKING BRAKE
LOCK LATCH
FUEL
GAUGE
SEAT HOLD DOWN
RELEASE LATCH
CUTTING HEIGHT
ADJUSTMENT
CUTTER DECK
RELEASE LEVER
RIGHT STEERING
CONTROL
FUEL
GAUGE
IGNITION
SWITCH
MOWER DECK
SWITCH
ENGINE THROTTLE
CONTROL
ENGINE CHOKE
CONTROL
FUSE HOLDERS
TIGER EYE
EFI ONLY
CHECK
ENGINE
LIGHT
FUEL SHUTOFF
VALV E
SEAT BELT
Figure 4-2. Controls and Instruments