Scag Power Equipment Patriot SPZ52H-22FX User manual

PART NO. 03548
PRINTED 09/2023
PRINTED IN USA
© 2023
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: SPZ-52H-22FX
SPZ-52H-23CV
SPZ-52H-25ZT
SPZ-52H-26BV
SPZ-52H-27CX
SPZ-52H-27SR
SPZ-61H-23FX
SPZ-61H-25CV
SPZ-61H-25ZT
SPZ-61H-26BV
SPZ-61H-27CX
SPZ-61H-27SR

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 o󰀨s, ditches, water,retaining walls,
avoid any slope exceeding 15 degrees, and do not mow under trees on slopes with
the roll bar down.
• 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 o󰀨 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:
SPZ-52H-22FX with a serial number of X3100001 to X3199999
SPZ-52H-23CV with a serial number of X3200001 to X3299999
SPZ-52H-25ZT with a serial number of X3300001 to X3399999
SPZ-52H-26BV with a serial number of X3400001 to X3499999
SPZ-52H-27CX with a serial number of X3500001 to X3599999
SPZ-52H-27SR with a serial number of X3600001 to X3699999
SPZ-61H-23FX with a serial number of X3700001 to X3799999
SPZ-61H-25CV with a serial number of X3800001 to X3899999
SPZ-61H-25ZT with a serial number of X3900001 to X3999999
SPZ-61H-26BV with a serial number of X4000001 to X4099999
SPZ-61H-27CX with a serial number of X4100001 to X4199999
SPZ-61H-27SR with a serial number of X4200001 to X4299999
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............................................................................................4
2.4 TESTING THE SAFETY INTERLOCK SYSTEM .....................................................................................4
2.5 OPERATION CONSIDERATIONS.............................................................................................................5
2.6 ROLL-OVER PROTECTION STRUCTURE.............................................................................................. 7
2.7 MAINTENANCE CONSIDERATIONS AND 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 ..............................................................................................12
3.1 ENGINE .....................................................................................................................................................12
3.2 ELECTRICAL............................................................................................................................................12
3.3 MOWER .....................................................................................................................................................12
3.4 CUTTER DECK .........................................................................................................................................13
3.5 HYDRAULIC SYSTEM .............................................................................................................................13
3.6 WEIGHTS AND DIMENSIONS ............................................................................................................... 13
3.7 PRODUCTIVITY........................................................................................................................................13
SECTION 4 - OPERATING INSTRUCTIONS ...........................................................................14
4.1 CONTROLS AND INSTRUMENT IDENTIFICATION ............................................................................14
4.2 SAFETY INTERLOCK SYSTEM .............................................................................................................16
4.3 TESTING THE SAFETY INTERLOCK SYSTEM ...................................................................................16
4.4 INITIAL RUN-IN PROCEDURES.............................................................................................................16
4.5 STARTING THE ENGINE.........................................................................................................................17
4.6 GROUND TRAVEL AND STEERING...................................................................................................... 17
4.7 ENGAGING THE DECK DRIVE (CUTTER BLADES) ...........................................................................18
4.8 HILLSIDE OPERATION ...........................................................................................................................19
4.9 PARKING THE MOWER ..........................................................................................................................19
4.10 AFTER OPERATION ..............................................................................................................................19
4.11 REMOVING CLOGGED MATERIAL .....................................................................................................20
4.12 MOVING MOWER WITH ENGINE STOPPED......................................................................................20
4.13 RECOMMENDATIONS FOR MOWING ................................................................................................20
4.14 ADJUSTING CUTTING HEIGHT ...........................................................................................................21
4.15 TOWING ..................................................................................................................................................21

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Table of Contents
SECTION 5 - TROUBLESHOOTING CUTTING CONDITIONS ...............................................22
SECTION 6 - ADJUSTMENTS .................................................................................................25
6.1 PARKING BRAKE ADJUSTMENT..........................................................................................................25
6.2 TRAVEL ADJUSTMENTS........................................................................................................................26
6.3 THROTTLE CONTROL AND CHOKE ADJUSTMENTS .......................................................................27
6.4 BELT ADJUSTMENT................................................................................................................................27
6.5 BELT ALIGNMENT ...................................................................................................................................27
6.6 CUTTER DECK ADJUSTMENTS............................................................................................................28
6.7 ELECTRIC CLUTCH ADJUSTMENT......................................................................................................30
SECTION 7 - MAINTENANCE..................................................................................................31
7.8 MAINTENANCE CHART..........................................................................................................................31
7.9 LUBRICATION ..........................................................................................................................................32
7.10 HYDRAULIC SYSTEM ...........................................................................................................................33
7.11 ENGINE OIL ............................................................................................................................................34
7.12 ENGINE FUEL SYSTEM ........................................................................................................................35
7.13 ENGINE AIR CLEANER.........................................................................................................................36
7.14 BATTERY.................................................................................................................................................36
7.15 DRIVE BELTS .........................................................................................................................................37
7.16 CUTTER BLADES ..................................................................................................................................37
7.17 TIRES.......................................................................................................................................................39
7.18 BODY, DECK, AND UPHOLSTERY ......................................................................................................39
SECTION 8 - ILLUSTRATED PARTS LIST..............................................................................40
8.1 SCAG APPROVED ATTACHMENTS AND ACCESSORIES. ...............................................................40
52H CUTTER DECK .......................................................................................................................................42
61H CUTTER DECK .......................................................................................................................................44
CUTTER DECK CONTROLS - SPZ52H .......................................................................................................46
CUTTER DECK CONTROLS - SPZ61H .......................................................................................................48
SHEET METAL COMPONENTS - SPZ .........................................................................................................50
SPZ SUSPENSION SEAT..............................................................................................................................52
BRAKE COMPONENTS - SPZ ......................................................................................................................54
SPZ ROLL-OVER PROTECTION STRUCTURE .........................................................................................56
DRIVE SYSTEM COMPONENTS - SPZ52 & SPZ61 ...................................................................................58
EXHAUST AND ELECTRICAL SYSTEM - SPZ...........................................................................................60
SPZ FUEL SYSTEM .......................................................................................................................................62
ZT-3100 HYDRAULIC AXLE ASSEMBLY - SPZ52......................................................................................64
ZT-3400 HYDRAULIC AXLE ASSEMBLY - SPZ61......................................................................................66
REPLACEMENT DECALS AND INFORMATION PLATES ........................................................................ 68
SPZ - ELECTRICAL SCHEMATIC ................................................................................................................70
LIMITED WARRANTY .............................................................................INSIDE BACK COVER

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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
Authorized Scag Power Equipment Dealer.
We encourage you to contact your dealer for repairs. All
Authorized Scag Power Equipment Dealer 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 ON THIS
PRODUCT BY OTHER THAN THE MANUFACTURER'S
AUTHORIZED REPLACEMENT PART MAY
ADVERSELY AFFECT THE PERFORMANCE,
DURABILITY OR SAFETY OF THIS PRODUCT.
USE OF OTHER THAN 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.
SERIAL NUMBER
PLATE LOCATION
(BETWEEN SEAT SPRINGS)
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. Be
aware that using attachments with the mower may affect
stability. Be sure to follow the directions found in the
operator's manual.
WARNING
For pictorial clarity, some illustrations and gures
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 detail 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.
This product is capable of amputating hands and feet and
throwing objects. Always follow all safety instructions on this
product and in the manual to avoid personal injury or death.
READ THIS OPERATOR’S MANUAL AND USE THE
QR CODE BELOW TO WATCH THE SAFETY VIDEO
BEFORE ATTEMPTING TO START YOUR MOWER.
MAKE SURE THAT EVERYONE KNOWS WHERE THE
MANUAL IS LOCATED AND KEEP A RECORD OF
EACH EMPLOYEE THAT HAS READ THE MANUAL.
Figure 2-1. SAFETY VIDEO QR CODE
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.
SAFETY INFORMATION

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Section 2
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.
3. DO NOT allow children to ride or play on the
machine, it is not a toy.
4. Keep keys stored in a safe location when the mower
is not in use; i.e. where they are inaccessible to
children.
5. Clear the area to be mowed of objects that could be
picked up and thrown by the cutter blades.
6. DO NOT carry passengers.
7. DO NOT operate the machine under the influence of
alcohol or drugs.
8. If the operator(s) or mechanic(s) cannot read
English, it is the owner's responsibility to explain this
material to them.
9. 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.
10. 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.
11. 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.
12. DO NOT start the engine until any spilled fuel has
been cleaned up or has evaporated.
13. 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.
14. Keep flammable objects (cigarettes, matches, etc.),
open flames and sparks away from the fuel tank and
fuel container. Use only approved containers.
15. See Section 7.4 ENGINE FUEL SYSTEM for fueling
procedure.
16. 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.
17. 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.
18. Check the blade mounting bolts at frequent intervals
for proper tightness.
19. Make sure all hydraulic fluid connections are tight
and all hydraulic hoses and lines are in good
condition before starting the machine.
20. 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.

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Section 2
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 steering control
levers are in the neutral position and the operator
is in the seat. The system shuts o󰀨 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.
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
2. Sit in the seat in the operating position, engage the
parking brake, move the PTO switch to the OFF
(down) position, move either of the steering control
handles out of the neutral lock position. Try to start
the engine; the engine should not start. Repeat for
the other steering control lever.
3. All SPZ models will start with the parking brake
engaged or disengaged. For all test procedures
listed below, the engine should be started with the
parking brake engaged unless specified otherwise.
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 2-5, Page
11 to determine approximate slope or use a at
surface and an app on your cell phone. ALWAYS
FOLLOW OSHA APPROVED OPERATION.
2. Reduce speed and exercise extreme caution on
slopes and sharp turns to prevent tipping or loss
of control. Be especially cautious when changing
directions on slopes.
3. Stay at least 2 cutting widths away from drop-offs,
ditches, retaining walls, water, avoid any slope
exceeding 15-degrees, and do not mow under trees
on slopes with the roll bar down.
4. To prevent tipping or loss of control, start and stop
smoothly, avoid unnecessary turns and travel at
reduced speed. Use caution when operating the
mower on an incline with the optional grass catcher
installed.
5. If the operator were to lose steering control of the
mower while operating, move both steering levers
to the neutral position and immediately apply the
parking brake. 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.

6
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Section 2
CAUTION
Do not touch the engine or the mu󰀪er 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. Ensure 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. 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.
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.
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.) and 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.
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.

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Section 2
2.6 ROLL-OVER PROTECTION
STRUCTURE
WARNING
The seat belt must be 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 Protective Structure MUST
NOT be removed. Failure to adhere to this guideline could
result in injury or death.
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. 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 2-2. Foldable Roll-Over Protection Structure
HAIR PIN
LOCK PIN
Figure 2-3. 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.

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Section 2
WARNING
Failure to properly inspect and maintain the seat
belt can cause serious injury or loss of life.
1. Check the full length of the seat belt webbing for
cuts, wear, fraying, dirt and stiffness. See Figure 2-4.
2. Check the seat belt webbing in areas exposed
to UV 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 2-4.
4. Be sure to confirm that the seat belt recoil latch is
functioning properly.
INSPECT WEBBING
INSPECT BUCKLE
& LATCH
Figure 2-4. Seat Belt Inspection
WARNING
Reduce speed when turning, operating on slopes,
slick or wet surfaces. Allow extra distance to stop.
Stay o󰀨 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
2-5, Page 11 to determine approximate slope or
use a at surface and an app on your cell phone.
Reference the Safety Video using the QR Code
in section 2.1.
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.
DO NOT lower the roll bar to mow under trees on
slopes. If mowing under trees is required, always
use a walk-behind mower or string trimmer.
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 2-5, Page 11 to help determine
approximate slope or use a at surface and an app
on your cell phone. Reference the Safety Video
using the QR Code in section 2.1.
Back up the ramp and drive down forward.

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Section 2
2.7 MAINTENANCE CONSIDERATIONS
AND 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
(P/N 92125), 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 uid is under high pressure and can
penetrate skin causing injury. If hydraulic uid
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 o󰀨 the engine before
performing any work on the hydraulic system.
If you need service on your hydraulic system,
please see your Authorized Scag Power Equipment
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.

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Section 2
483505 483402
481568
483406
483660
2019 SPZ Safety Decals
483633
483425
486303
483405
483300
Molded in Fuel Tank
WARNING
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
- Allow to cool several minutes
- Remove cap slowly
- Do not overfill
PARKING BRAKE
TO ENGAGE PARKING BRAKE:
*Fully depress foot pedal
*Pull back and hold latch
handle while releasing pedal
TO DISENGAGE PARKING BRAKE:
*Depress and release pedal
P
484461
484461
2.10 SAFETY AND INSTRUCTIONAL DECALS

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Section 2
5o
10o
15o
20o
0o
5o
10o
15o
0o
Figure 2-5. Slope Angle Graph

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Section 3
SPECIFICATIONS
3.1 ENGINE
General Type ................................................................................................Heavy Duty Industrial/Commercial Gasoline
Model:
Scag Model SPZ-52H-22FX............................................................................................................Kawasaki FX691V
Scag Model SPZ-61H-23FX............................................................................................................Kawasaki FX730V
Scag Model SPZ-52H-23CV ..................................................................................................................Kohler CV732
Scag Model SPZ-52H-25ZT................................................................................................................... Kohler ZT740
Scag Model SPZ-52H-27CX .............................................................................................. Briggs & Stratton CXi2700
Scag Model SPZ-52H-27SR ................................................................................................................Scag LC2P82F
Scag Model SPZ-61H-25CV ..................................................................................................................Kohler CV742
Scag Model SPZ-61H-25ZT................................................................................................................... Kohler ZT740
Scag Model SPZ-52H-26BV..............................................................................................Briggs & Stratton Vanguard
Scag Model SPZ-61H-26BV..............................................................................................Briggs & Stratton Vanguard
Scag Model SPZ-61H-27CX .............................................................................................. Briggs & Stratton CXi2700
Scag Model SPZ-61H-27SR ................................................................................................................Scag LC2P82F
Displacement:
Kawasaki 22FX (FX691V)...................................................................................................................................726cc
Kawasaki 23FX (FX730V)...................................................................................................................................726cc
Kohler 23CV........................................................................................................................................................732cc
Kohler 25ZT.........................................................................................................................................................747cc
Kohler 25CV........................................................................................................................................................742cc
Scag LC2P82F................................................................................................................................................... 803cc
Briggs & Stratton 27CX .......................................................................................................................................810cc
Briggs & Stratton Vanguard 26BV .......................................................................................................................810cc
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
Idle Speed:
Kawasaki..................................................................................................................................................... 1550 RPM
Kohler.......................................................................................................................................................... 1750 RPM
Briggs & Stratton Vanguard......................................................................................................................... 1550 RPM
Scag LC2P82F............................................................................................................................................ 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:...............................................................................................................Electric Starting with Bendix Shift Starter
Belts................................................................................................................ Kevlar cord. Self-adjusting, Self-tightening
3.2 ELECTRICAL
Battery .................................................................................................................................................................... 12 Volt
Charging System................................................................................................................................................Alternator
Charging Output:
Kawasaki / Kohler / Briggs & Stratton Vanguard .................................................................................12 Volt, 13 Amp
System Polarity.......................................................................................................................................Negative Ground
Starter...................................................................................................... 12 Volt Electric Ring Gear Type, Key Operated
Interlock Switches....................................................... Seat, Neutral Control, Mower Engagement (PTO), Parking Brake
Instrument Panel ....................................................................... Key Switch, Throttle Lever, Manual Choke, PTO Switch
Fuses........................................................................................................................................................Two (2) 20 Amp
3.3 MOWER
Drive System .........................................................Hydraulic Drive with Two Hydro-Gear™ Integraded Zero-Turn Axles
Scag Model SPZ-52H.............................................................................................................. Hydro-Gear™ ZT-3100
Scag Model SPZ-61H.............................................................................................................. Hydro-Gear™ ZT-3400

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Section 3
Steering/Travel Control...........................................................................................Twin Lever Fingertip Steering Control
with Individual Control to Each Wheel with Gas Spring Dampers
Parking Brake...................................................................Lever Actuated Linkage to Brakes on Both Drive Wheel Axles
Wheels:
(2) Front Caster SPZ-52H .................................................................................................................13 X 5-6 Two-Ply
(2) Front Caster SPZ-61H .......................................................................................................... 13 X 6.50-6 Four Ply
(2) Drive SPZ-52H .............................................................22 X 10.5-12 Four-Ply Pneumatic Tubeless, Radius Edge
(2) Drive SPZ-61H................................................................24 X 12-12 Four-Ply Pneumatic Tubeless, Radius Edge
Tire Pressure:
Front Caster ...................................................................................................................................................... 25 PSI
Drive.................................................................................................................................................................... 8 PSI
Fuel Tank .................................. Single 6-1/2 Gallon Seamless Roto-Low Perm Tank with Large Opening and Fuel Cap
Seat .......................................................................................................... Padded, Thick Cushion with Suspension Seat
Travel Speed:
52" Forward........................................................................................................................................ 0 up to 8.5 MPH
61" Forward......................................................................................................................................... 0 up to 10 MPH
Reverse................................................................................................................................................. 0 up to 5 MPH
-NOTE- The machine will travel up to either 8.5 or 10 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 ...............................................................................10-Gauge top with 11-Gauge reinforcement throughout
the spindle area, 7-Gauge skirt for strength and longevity
True Cutting Width:
52 ..........................................................................................................................................................52" (122.0 cm)
61 ........................................................................................................................................................61" (154.94 cm)
Cutting Height Adjustment ............. Foot-Operated Lever Adjustment from Operator's Seat, 1.5" to 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
Discharge Chute.................................................................................................. Black, Polypropylene (Plastic), Flexible
Spindles...........................Heavy-Duty Spindle Shaft, Cast Aluminum Housing, Sealed Ball Bearing, Maintenance-Free
Spindle Pulleys..................................................................................................................................................Split Steel
Cutter Deck Belts.................................................................. B-section with Kevlar Cord. Self-Adjusting, Self-Tightening
Electric Clutch Type................................................................................................Ogura Heavy Duty PTO Clutch Brake
3.5 HYDRAULIC SYSTEM
Hydraulic Oil Filter .........................................................................................................40 Micron Spin-on Element Type
Hydraulic Expansion Reservoir ................................................................................................................................Nylon
3.6 WEIGHTS AND DIMENSIONS 52H 61H
Length................................................................................................................................ 73" ....................................79"
Tracking Width..................................................................................................................47.5"................................50.5"
Overall Width w/chute down.............................................................................................64.5"................................73.5"
Overall Width w/chute up................................................................................................... 53" ....................................62"
Overall Height.................................................................................................................... 61" .................................61.5"
Operating Weight...........................................................................................................907-911#......................952-956#
3.7 PRODUCTIVITY 52H 61H
Cutting Width..................................................................................................................... 52" ....................................61"
Acres Per Day ...................................................................................................................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
WARNING
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.
4.1 CONTROLS AND INSTRUMENT
IDENTIFICATION
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.
OPERATING INSTRUCTIONS
1. Ignition Switch (Figure 4-1). The ignition switch
is used to start the engine and has three positions;
OFF, ON, and START.
2. Mower Deck Switch (Figure 4-1). Use to engage
and disengage the mower drive system. Pulling up
on the switch will engage the deck drive. Pushing
down on the switch will disengage the deck drive.
3. Engine Choke Control (Figure 4-1). Use to start a
cold engine.
4. Engine Throttle Control (Figure 4-1). Use to
control the engine speed. Pushing the lever forward
increases engine speed. Pulling the lever back
decreases engine speed. Full back position is the
IDLE position. Full forward is the cutting position.
5. Fuel Gauge (Figure 4-1). Indicates the amount of
fuel in the fuel tank.
CUTTER DECK
RELEASE LEVER
RIGHT STEERING
CONTROL
CUTTING HEIGHT
ADJUSTMENT
FAST
FAST
SLOW
SLOW
MOWER DECK
PULL OUT TO ENGAGE
PUSH IN TO DISENGAGE
DECK LIFT
BRAKE
PEDAL
LEFT STEERING
CONTROL
DUMP VALVE
DUMP VALVE
IGNITION
SWITCH
MOWER
DECK
SWITCH
ENGINE
THROTTLE
CONTROL
ENGINE
CHOKE
CONTROL
HOUR METER
SEAT HOLD DOWN
RELEASE LATCH
FUEL GAUGE
SEAT BELT
PARKING BRAKE
LOCK LATCH
Fuse holder
Figure 4-1. Controls and Instruments

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Section 4
6. Hourmeter (Figure 4-1). Indicates the number of
hours the engine has been operated. It operates
whenever the engine is running. Has preset
maintenance reminders for engine and hydraulic
system oil changes. Will start flashing scheduled
maintenance 2 hours before preset time and
continue flashing until 2 hours after. Automatically
resets.
7. Fuse Holders (Figure 4-1). Two 20-amp fuses
protect the mower’s electrical system. To replace
fuses, pull fuse out of the socket and install a new
fuse.
8. Left Steering Control (Figure 4-1). Use to control
the mower's left wheel when traveling forward or
reverse.
9. Right Steering Control (Figure 4-1). Use to control
the mower's right wheel when traveling forward or
reverse.
10. Brake Pedal (Figure 4-1). Depressing the brake
pedal applies the brake.
11. Parking Brake Lock Latch (Figure 4-1). Use to
lock the parking brake in the engaged position.
Fully depress the brake pedal and pull the parking
brake lock latch back to lock the parking brake in the
engaged position. See Figure 4-2. Fully depress the
brake pedal forward to disengage the parking brake
lock latch, then release the brake pedal to disengage
the brake. See Figure 4-3.
PUSH BRAKE
PEDAL FORWARD
PULL BACK ON
PARKING BRAKE
LATCH
Figure 4-2. Engaging the Parking Brake
PUSH BRAKE PEDAL
FORWARD THEN RELEASE
PEDAL TO DISENGAGE
Figure 4-3. Releasing the Parking Brake
12. Dump Valve Control Levers (Figure 4-4). Located
on the left and right side of the bumper, used to
“free-wheel” the mower. Rotating the levers forward
into the notch (towards the front of the mower)
allows the unit to move under hydraulic power.
Rotating the levers backward to the notch (towards
the rear of the mower) allows the mower to be
moved by hand (free-wheeling).
DUMP VALVE
CONTROL LEVER
"DRIVE" POSITION
Figure 4-4. Dump Valve Control

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Section 4
13. Deck Lift Foot Lever (Figure 4-1). Use to raise
and lower the cutter deck.
14. Cutting Height Adjustment (Figure 4-1). Use to
set the cutter deck at the desired cutting height.
15. Deck Release Lever (Figure 4-1). Use to lock the
cutter deck in the transport position. Push the foot
pedal forward and pull back on the release lever to
release the cutter deck for normal mowing.
16. Seat Belt (Figure 4-1). Use to secure the operator.
Seat belt must be worn at all times during operation.
17. Seat Hold Down Release Latch (Figure 4-1).
Located behind the seat. Use to secure the seat in
the operator's position. Release the latch to gain
access under the seat.
4.2 SAFETY INTERLOCK SYSTEM
The mower is equipped with a safety interlock system that
prevents the engine from starting unless the deck drive is
disengaged, the steering control levers are in the neutral
position and the operator is in the seat. The interlock system
shuts off the engine if the operator leaves the seat with the
steering control levers not in the neutral position and/or the
cutter blades engaged and the parking brake not engaged.
WARNING
Never operate the mower with the interlock
system disconnected or malfunctioning. Do
not disengage or bypass any switch; injury to
yourself and others or property damage could
result.
4.3 TESTING THE SAFETY INTERLOCK
SYSTEM
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
2. Sit in the seat in the operating position, engage the
parking brake, move the PTO switch to the OFF
(down) position, move either of the steering control
handles out of the neutral lock position. Try to start
the engine; the engine should not start. Repeat for
the other steering control lever.
-NOTE-
All SPZ models will start with the parking brake
engaged or disengaged. For all test procedures
listed below, the engine should be started with the
parking brake engaged unless specified otherwise.
3. 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.
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, engage the PTO switch to the
ON (up) position, 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, move either steering control lever
out of the neutral lock position. The engine should
shut off. Repeat for the other steering control lever.
4.4 INITIAL RUN-IN PROCEDURES
FIRST DAY OF USE OR APPROXIMATELY 20 HOURS
1. Check all belts for proper alignment and wear at 2, 4
and 8 hours.
2. Change the engine oil and oil filter after the first 20
hours of operation. (See Section 7.3.)
3. Check hydraulic oil level in reservoir.
(See Section 7.2.)
4. Check for loose hardware. Tighten as needed.
5. Check interlock system for proper operation.
(See Section 4.2.)
6. Check tire pressure. Adjust pressure if necessary.
(See Section 7.9.)