Scag Power Equipment SWZU User manual

MODEL SWZU
OPERATOR’S MANUAL
THIS MANUALCONTAINS THE OPERATING
INSTRUCTIONS AND SAFETY INFORMA-
TION FOR YOUR SCAG MOWER. READING
THIS MANUAL CAN PROVIDE YOU WITH
ASSISTANCE IN MAINTENANCE AND AD-
JUSTMENT PROCEDURES TO KEEP YOUR
MOWER PERFORMING TO MAXIMUM EFFI-
CIENCY. THE SPECIFIC MODELS THATTHIS
BOOK COVERS ARE CONTAINED ON THE
INSIDECOVER. BEFORE OPERATINGYOUR
MACHINE, PLEASE READ ALL THE INFOR-
MATION ENCLOSED.
©2003
SCAGPOWEREQUIPMENT
DIVISION OF METALCRAFT OF MAYVILLE, INC.
PART NO. 03132
PRINTED7/03
PRINTED IN USA

FAILURE TO FOLLOW SAFE OPERATING PRACTICES
MAY RESULT IN SERIOUS INJURY.
* 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.
* Read this manual completely as well as other manuals that came
with your mower.
* Keep others off the tractor (only one person at a time)
REMEMBER -YOUR MOWER IS ONLY AS SAFE ASTHE 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.
WARNING:
Thismanualcoverstheoperatinginstructions
andillustratedparts list for:
SWZU36A-15KA with a serial number of 9090001 to 9099999
SWZU48A-17KA with a serial number of 9110001 to 9119999
SWZU48A-18HN with a serial number of 9630001 to 9639999
SWZU52A-17KA with a serial number of 9120001 to 9129999
SWZU52A-18HN with a serial number of 9130001 to 9139999
SWZU52A-18KH with a serial number of 9140001 to 9149999
SWZU-21KAE with a serial number of 9190001 to 9199999
SWMU-52A with a serial number of 9200001 to 9209999
SWMU-61A with a serial number of 9210001 to 9219999
Alwaysusetheentireserialnumber listed on the serial number
tag when referring to this product.

TABLE OF CONTENTS
SUBJECT PAGE
Introduction.................................................................................................. 1
Direction Reference..................................................................................... 1
Servicing the Engine and Drive Train Components ..................................... 1
Symbols....................................................................................................... 2-3
General Safety Instructions.......................................................................... 4
Signal Words ............................................................................................... 4
Before Operating ......................................................................................... 4
Operation Considerations............................................................................ 6
Maintenance and Storage ........................................................................... 7
Initial Run-In Procedures ............................................................................. 7
Mower Operation ......................................................................................... 8
Cutter Deck Belt Adjustments...................................................................... 9
Cutter Deck Adjustments ............................................................................. 9-10
Cutter Blades............................................................................................... 10
Custom-Cut Baffle Adjustment..................................................................... 10-11
Neutral Adjustment ...................................................................................... 11
Steering Control Rod Adjustment ................................................................ 12
Tracking Adjustment .................................................................................... 12
Parking Brake .............................................................................................. 13
Lubrication and Maintenance Chart ............................................................ 14
Checking Hydraulic Oil Level ...................................................................... 15
Changing Hydraulic Oil ............................................................................... 15
I
WE SUPPORT OPE
TECHNICIAN
CERTIFICATION

TABLE OF CONTENTS
(CONTINUED)
SUBJECT PAGE
Changing Hydraulic Oil Filter Element ........................................................ 15
Engine Oil Maintenance .............................................................................. 16
Engine Air Cleaner Maintenance................................................................. 16
Checking Electrolyte Level and Cleaning Battery ....................................... 16
Charging the Battery.................................................................................... 17
Jump Starting .............................................................................................. 17
Troubleshooting Cutting Conditions ............................................................ 18-20
Technical Specifications.............................................................................. 21-22
Illustrated Parts List
Notes....................................................................................................................... 23
SWMU-36"A Cutter Deck ............................................................................ 24-25
SWMU-48"A, 52"A, & 61"A Cutter Decks .................................................... 26-27
Cutter Deck Frame 36" ................................................................................ 28-29
Cutter Deck Frame 48" & 52" Small Frame.................................................. 30-31
Cutter Deck Frame 52" & 61" Large Frame.................................................. 32-33
Engine Deck................................................................................................ 34-35
Drive And Brake Components ..................................................................... 36-37
Handle Assembly - Small Frame (16")......................................................... 38-39
Handle Assembly - Large Frame (SWZU-21KAE)....................................... 40-41
Hydraulic Assembly..................................................................................... 42-43
Hydraulic Pump Assembly .......................................................................... 44-45
Engine Deck Wire Harness (Manual Start) .................................................. 46
Handle Wire Harness (Manual Start) ........................................................... 46
Engine Deck Wire Harness - Kawasaki (Electric Start) ............................... 47
Handle Wire Harness - Kawasaki (Electric Start) ........................................ 47
Wire Harness Adaptor - Honda.................................................................... 48
Wire Harness Adaptor - Kawasaki (15HP & 17HP)..................................... 48
Replacement Decals ................................................................................... 49-50
WarrantyStatement.........................................................................InsideBackCover
II

1
GENERAL INFORMATION
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.
USE OF OTHER THAN ORIGINAL SCAG
REPLACEMENT PARTS WILL VOID THE
WARRANTY.
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.
WARNING
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
Use only Scag approved attachments and accessories.
Scag Approved Attachments:
GC-F4
GC-4D
Scag Approved Accessories:
Mulch Plate
Mulch Master
Cup Holder
Hour Meter
Turbo Baffle
BladeBuddy
Using unapproved attachments, (especially "stand-up"
riding attachments) may be hazardous.
SERVICING THE ENGINE AND DRIVE TRAIN
COMPONENTS
The detailed servicing and repair of the engine and
hydraulic pumps 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.
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.

2
CE Mark
TransmissionChoke
On/Start Spring Tension on Idler
Oil
Off/Stop
SYMBOL DESCRIPTION
SYMBOL DESCRIPTION
ISO Symbols
SpinningBlade
48071S
Parking Brake
WARNING
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
FallingHazard

3
Slow
Fast
Cutting Element - Engage
Cutting Element - Basic Symbol
Cutting Element - Disengage
Continuously Variable - Linear
Read Operator's Manual
Keep Bystanders Away
Pinch Point
481039S
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
Hourmeter/Elapsed Operating Hours
Thrown Object Hazard

4
SAFETY INFORMATION
GENERAL SAFETY INFORMATION
SIGNALWORDS
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:
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.
BEFORE OPERATION
CONSIDERATIONS
1. NEVER allow children to operate this machine.
Do not allow adults to operate this machine without
proper instructions.
2. DO NOT mow when children and/or others are
present.
3. Clear the area to be mowed of objects that could be
picked up and thrown by the cutter blades.
4. DO NOT wear loose fitting clothing that 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.
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.
READ THIS OPERATOR’S MANUAL 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. Use the contact form to make your
request. Please indicate the complete model and serial
number of your Scag product when requesting
replacement manuals.
The signal word 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.

5
5. Operator hearing protection is recommended,
particularly for continuous operation of the mower.
Wear suitable hearing protection. Prolonged
exposure to loud noise can cause hearing impairment
or hearing loss.
6. 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.
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, and the speed
adjustment lever is in the neutral position. The
systemshuts off the engine if the operator releases
the operator presence levers with the deck drive
engaged and/or the speed adjustment lever not in
the neutral position, or the parking brake
disengaged. Never operate equipment with the
interlock system disconnected or malfunctioning.
WARNING:
7. Gasolineishighlyflammable,handleitcarefully.Fill
the fuel tank outdoors. Never indoors. Fill the fuel
tank with clean, fresh gasoline, with a minimum
octane rating of 87. Use a funnel or spout to prevent
spillage.
8. Before attempting to start the engine, move the
speed adjustment lever into the neutral position, move
the blade engagement switch to the OFF position,
apply the parking brake, and move the neutral latches
to neutral.
WARNINGWARNING
DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING
KIT, OR ENTIRE GRASS CATCHER INSTALLED
9. The discharge chute must always be installed and in
the down position on the side discharge cutter deck
except when the Scag optional grass catcher or
mulching plate are properly installed.
11. Check the blade mounting bolts at frequent intervals
for proper tightness.
12. Make sure all hydraulic fluid connections are tight
and all hydraulic hoses and lines are in good condition
before starting the machine.
ROTATING BLADES
NEVER PUTYOUR HANDS INTOTHE DISCHARGE
CHUTE FOR ANY REASON! Shut off the engine and
remove the key and only then use a stick or similar
object to remove material if clogging has occurred.
10. 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.
Do not use your hand to dislodge the clogged
discharge chute. Use a stick or other device to
remove clogged material.
BEFORE OPERATION CONSIDERATIONS
(CONT'D)
A. Use an approved gasoline container.
B. DO NOT add fuel to a running or hot engine.
Allow the engine to cool for several minutes
before adding fuel.
C. Keep flammable objects (cigarettes, matches,
etc.), open flames and sparks away from the fuel
tank and fuel container.
D. Fill the fuel tank outdoors and up to approxi-
mately 1" (25 mm) below the bottom of the filler
neck.
E. Wipe upanyspilledgasoline.

6
12. Take all possible precautions when leaving the
machine unattended, such as disengaging the mower,
setting the parking brake, stopping the engine, and
removing the key.
13. 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.
14. DO NOT run the engine inside a building or a
confined area without proper ventilation. Exhaust
fumes are hazardous and could cause death.
10. DO NOT direct the discharge of material toward
bystanders or allow anyone near the machine while
inoperation.
9. DO NOT operate without the side discharge chute
installed and in the down position.
3. Be sure the interlock switches are functioning
correctly.
2. Start the engine when the neutral latches are in the
neutral lock position, the cutter blades are disen-
gaged, the parking brake is on and the speed adjust-
ment lever is in the neutral position.
OPERATION CONSIDERATIONS
1. Know the function of all controls and how to stop
quickly.
4. Using the machine demands attention. To prevent
lossofcontrol:
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. ALWAYS FOLLOW OSHA APPROVED
OPERATION.
5. Disengage power to the 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.
6. Disengage power to the cutter deck before crossing
roads, walks or gravel drives.
7. Shut the engine off and wait until the blades come to
a complete stop before removing the grass catcher
container.
8. Never raise the cutter deck while the blades are
rotating.
NEVER PUTYOUR HANDS INTOTHE DISCHARGE
CHUTEFOR ANY REASON!
ROTATING BLADES
11. If the cutting blades should strike a solid object or the
equipment should start to vibrate abnormally, stop the
engine, disconnect the spark plug wire, and check
immediately for the cause. Vibration is generally a
warning of trouble. Check the machine for damaged
or defective parts. Repair any damage before
starting the engine or operating the cutter deck. Be
sure the blades are in good condition and the blade
bolts are tight.
A. Mow only in daylight or when there is good
artificiallight.
B. Watch for holes or other hidden hazards.
C. Do not drive close to a drop-off, ditch, creek
bank, or other hazard.
D. Reduce speed when making sharp turns and
whenturningonhillsides.
E. Always be sure of your footing. Keep a firm
hold on the handles and walk---never run.
F. Do not operate where conditions are slippery

7
MAINTENANCE AND STORAGE
2. 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.
3. Remove the key from the ignition switch and
disconnect the wire from the spark plug(s) to prevent
accidental starting of the engine when servicing,
adjusting or storing the machine.
14. Hydraulic fluid is under high pressure. Keep
body and hands away from pinholes or nozzles that
eject hydraulic fluid under high pressure. If you need
service on your hydraulic system, please see your
authorized Scag dealer. Hydraulic fluid under high
pressure may have sufficient force to penetrate skin
and cause serious 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.
1. Allow only trained personnel to service the machine.
6. Do not change the engine governor settings or
overspeed the engine. See the engine operator's
manual for information on engine settings.
7. To reduce fire hazard, keep the engine free of grass,
leaves, excessive grease, oil and dirt.
4. If the mower must be tipped to perform maintenance
or adjustment, remove the battery, drain the gasoline
from the fuel tank and the oil from the crankcase.
5. Be sure the machine is in safe operating condition by
keeping nuts, bolts, and screws tight. Check the
blade mounting bolts and nuts frequently to be sure
they are tightened.
8. The engine must be shut off before checking the oil
or adding oil to the crankcase.
9. Allow the engine to cool before storing the mower in
any enclosure such as a garage or storage shed.
Make sure the fuel tank is empty if the machine is to
be stored in excess of 30 days. Do not store the
mower near any open flame or where gasoline
fumes may be ignited by a spark.
10. Always store gasoline in a safety-approved, red
container.
11. Be careful when servicing the battery as it contains
acid, which is corrosive and could cause burns to
skinandclothing.
12. Batteries release explosive gases when being
charged or discharged. Keep batteries away from
any source of sparks and/or flame.
13. Make sure all hydraulic fluid connections are tight
and all hydraulic hoses and lines are in good
condition before starting the machine.
INITIAL RUN-IN PROCEDURES (FIRST
DAY OF USE OR APPROXIMATELY 10
HOURS)
1. Check the steering control rods and the speed
control for neutral adjustment. (See Adjust
ments, page 11-12)
2. Check the tires for proper pressure.
Caster Wheels 25psi.
Drive Wheels 12psi.
3. Check for loose hardware. Tighten as needed.
* On electric start machines the engine should
crank and start if the machine is in neutral,
the PTO engagement switch is OFF and the
parking brake is ON.
4. Check the safety switches for proper adjustment:
5. Apply lubricant to all the grease fittings.
Lubricant was applied at the factory. This is just a
precautionary check to make sure that all the
fittings have been lubricated.

8
MOWER OPERATION
1. Read and understand the safety instructions before
attempting to operate this machine.
2. Before starting the engine:
* Check the oil level in the engine and the
hydraulicreservoir.
* Fill the fuel tank with clean, fresh, lead-free
gasoline.
* Open the fuel valve on the bottom of the fuel
tank. -NOTE-
Use gasoline with an octane rating no less than
87.
390S0138
PULL UP TO ENGAGE
PUSH DOWN TO DISENGAGE
-NOTE-
When PTO is engaged or (possibly) disengaged,
a squealing sound from the underside of the
machine is normal. It is caused by the electric
clutch plates meshing as the mower comes up to
speed. For best equipment life, engage the
clutch with the engine at 3/4 throttle, not under
full load.
6. While squeezing the steering brake levers with both
hands, release both neutral latches.
-NOTE-
Top speed is suggested only for transport!
5. Release the parking brake. Move the speed adjust-
ment lever to the desired mowing speed.
WARNING:
If you are not familiar with the operation of the
hydrostatic drive and zero turn feature, practice
turning and maneuvering with the hand controls
before engaging the blades.
7. When the steering brake levers are released, the
machine will travel straight. To make a right turn,
squeeze the RH lever. To turn left, squeeze the LH
lever.
8. TO STOP, squeeze both levers, lock the neutral
latches, and move the speed adjustment lever to
neutral.
9. To move the machine in reverse, squeeze up on both
steering control levers.
* Choke as required. If the engine is cold, pull the
choke knob out. When the engine starts, slowly
push the choke in. If the engine stalls, repeat the
above operation. When the engine is warm,
choking may not be necessary.
3. Start the engine:
* The speed adjustment lever must be in
NEUTRAL.
* The blade clutch switch must be in the OFF
position.
* The neutral latches must be in the neutral lock
position.
* The key switch must be on.
* The parking brake must be on.
* Cold starting. In the spring and fall when the
morning temperatures are cool it may be difficult
to start the machine due to the parastatic load
fromthe hydraulic drive. To relieve thisload, pull
out and up on the de-clutch chain located on the
right side of the machine behind the tire. This will
allow you to start the engine easily. When the
engine is warmed up, slowly release the de-
clutch chain to engage the hydraulic system.
4. Engage the cutter blades by pulling the blade clutch
switch into the ON position. Push the switch to the
OFF position to disengage the cutter blades.

9
10. To "freewheel" or move the machine around
without the engine running, turn the dump valve
levers located at the back of the pumps to the
"freewheel" positions (see Figure 1). To operate
the machine, the dump valve levers must be
returned to the closed positions.
Dump Valve Levers
(normal position)
SGB112
Figure 1. Dump Valves
CUTTER DECK ADJUSTMENTS
Due to the many cutting conditions that exist, it is difficult
to suggest a cutter deck setting that will work for every
lawn. There are two adjustments that can be made on
these decks, pitch and height.
PITCH is the angle of the blades (comparing front to
rear). A 1/4" downward pitch (front of deck down) is
recommended for best cutting performance.
CUTTER DECK BELT ADJUSTMENTS
-NOTE-
All the belts on the SWZU are spring loaded and
do not require adjustment. Check the belts for
excessive wear or damage daily for the first week.
After the first week, check the belts monthly.
1. Remove the belt covers.
2. Inspect the belts for wear, cracking, or glazing.
Contact your Scag dealer if any unusual wear is
noted.
3. Replace the belt covers.
HEIGHT is the nominal distance the blade is off of the
ground. This measurement is made with the blades
pointed side to side and distance is measured between
cuttingtipand ground.
Changes to the cutting height can be achieved by reposi-
tioning the cutter deck. There are eight available posi-
tions from 1" to 4-1/2" (See Figure 2).
Do not adjust the cutting height with the mower
blades rotating. Shut off the engine and remove
the ignition key. Bodily injury could occur from
the rotating blades.
WARNING:
4. Repeat the above process on the opposite side of the
cutter deck.
3. Lift or lower the deck to the desired cutting height
and reinstall the hairpins. Adeck height decal is
located on the deck mounting frame as an aid in
adjusting the deck to the desired height.
2. While holding up on the deck support handle, remove
the two hairpins from the adjusting pins on one side
of the cutter deck (See Figure 2).
1. Shut off the engine and remove the ignition key.
Remove Hair Pins
SWU99DHA
Figure 2. Cutting Height Adjustment

10
CUTTER BLADES
Do not sharpen beyond 1/3 of the width of the blade.
(See Figure 4)
Figure 4. Blade Sharpening
-NOTE-
Dress the blade with a file. Using a wheel
grinder may burn the blade. Check the balance
of the blade. If blades are out of balance, vibra-
tion and premature wear of spindle assembly can
occur. See your authorized Scag dealer for
blade balancing or special tools, if you choose to
balance your own blades.
WARNING:
Always wear proper hand and eye protection
when working with cutter blades.
The cutter deck pitch adjustment has been set at the
factory and normally will not need to be changed.
However, if the pitch needs to be adjusted due to service
work performed on the deck, follow the procedure below
(see Figure 3).
1. Shut off the engine and remove the key.
2. Support the cutter deck with four blocks (you
will be removing the hair pins to make this
adjustment).
3. Remove the front hair pins from the front deck
supportpins.
4. Loosen the jam nuts on the deck support pins.
5. Turn the deck support pins to lengthen or shorten
the pins to reach the desired result.
6. Tighten the jam nut, replace the hair pin, and
remove the blocks. Check that the desired deck
pitch is achieved.
CUTTER DECK PITCH ADJUSTMENTS
SWU99PA
REMOVE HAIR PIN
LOOSEN
JAM NUT
Figure 3. Deck Pitch Adjustment
Custom-Cut Baffle Adjustment
The Custom-Cut Baffle is designed to deliver optimum
airflow and superior cutting performance in any type of
grass. The Custom-Cut Baffle can be raised or lowered
to precisely tailor the deck's performance for the type of
grass being cut. The baffle can be set in three (3)
different positions for optimum performance.
A. 3" Position - baffle is installed using the top set of
holes on the front baffle welded inside the cutter
deck. (See Figure 6, Page 11). The Advantage cutter
deck will deliver the best quality-of-cut in very tall,
wiry, tough to cut grass.
B. 3-1/2" Position (factory setting) - baffle is installed
using the middle set of holes on the front baffle
welded inside the cutter deck. (See Figure 7, Page
11). For general purpose cutting, place the Custom
Cut Baffle in the 3-1/2" position. This gives the best
mix of cutting performance in all types of grass.
SGB033
Angle Blade Back
Do Not Cut In
X Must NOT Exceed
1/3 Blade Width
X
30

11
ToAdjustthe Custom-CutBaffle height:
Hardware location used in the illustrations are for
reference only. Location of hardware may vary
depending on the cutter deck size.
-NOTE- Figure 7. 3-1/2" Custom-Cut Baffle Position
Figure 8. 4" Custom-Cut Baffle Position
NEUTRAL ADJUSTMENT
-NOTE-
Neutral has been set by your Scag dealer at the
time of setup and normally does not need to be
adjusted. If, however, you find that neutral has
come out of adjustment, follow the procedure
below.
1. Raise the drive wheels off the ground and block the
caster wheels to prevent the machine from moving.
2. Make sure the speed control lever is in neutral, the
steering control levers are in the neutral latch
position, and the parking brake is on. Start the
engine.
3. Release the parking brake and note if the tires are
rotating.
C. 4" Position - baffle is installed using the bottom set of
holes on the front baffle welded inside the cutter
deck. (See Figure 8). Placing the baffle in the 4"
setting will enhance fall cutting (leaf pickup) and
reduce cutter deck "blowout".
1. Remove the hardware securing the Custom-Cut Baffle
to the cutter deck (See Figure 5).
Figure 5. Custom-Cut Baffle
2. Move the Custom-Cut Baffle to desired position. (See
Figures 6 through 8 for position).
3. Reinstall the mountinghardwareasshown.(See Figures
6 though 8). Torque hardware to 39ft.lbs.
Figure 6. 3" Custom-Cut Baffle Position
2004 CCB
MOUNTING
HARDWARE MOUNTING
HARDWARE
TOP SET OF HOLES
FOR 3" SETTING
2004 CCB - 3" Setting
CARRIAGE BOLT
ELASTIC STOP
NUT
MIDDLE SET OF HOLES
FOR 3-1/2" SETTING
2004 CCB - 3-1/2" Setting
CARRIAGE BOLT
ELASTIC STOP
NUT
BOTTOM SET OF HOLES
FOR 4" SETTING
2004 CCB - 4" Setting
CARRIAGE BOLT
ELASTIC STOP
NUT

12
3. Reinstall the speed control spring onto the swivel.
Install the hair pin onto the swivel. (See Figure 10)
TRACKING ADJUSTMENT
-NOTE-
Before proceeding with this adjustment, be sure
that the tire pressures are correct. (see page 7)
and that the neutral adjustment and the steering
control rod adjustment have been completed.
1. With the machine on a flat level surface, start the
engine and place the speed adjustment lever into the
speed that will most often be used.
2. Squeeze the steering control levers and release the
neutral latch. Slowly release the steering control
levers, allowing the machine to move forward.
Figure 10. Control Rod Adjustment
WARNING:
BEFORE ATTEMPTING TO MAKE ANY
TRACKING ADJUSTMENTS:
1. Move the speed adjustment lever to the
neutral position.
2. Place the blade engagement switch in the
OFF position.
3. Apply the parking brake.
4. Move the steering control levers into the
neutral position.
4. Starting on the left side of the machine, using the
adjustment wrench located on the left side of the
machine, rotate the tracking adjustment nut counter
clockwise just until the LH wheel starts to creep
forward. Make a note of the position of the adjust-
ment nut. (See Figure 9)
5. Turn the adjustment nut clockwise just until the
wheel turns rearward. Make a note of the position of
the adjustment nut. To adjust neutral, split the
difference between the two noted positions of the
adjustment nut. Repeat on the right side as needed.
6. Place the wrench in the holder on the left side of the
machine and turn the engine off.
Figure 9. Neutral Adjustment
STEERING CONTROL ROD
ADJUSTMENT -NOTE-
This adjustment is made to allow the steering
control levers to be moved out of the neutral
latch without engaging reverse.
Before making this adjustment be sure that the
speed control bearing is just touching the speed
control cam and that the bellcrank bearing is
resting in the center groove of the neutral cam.
1. Remove the speed control spring. Remove the
steering control rod swivel hair pin. Check the
location of the swivel in the slotted hole in the bell
crank.
2. Turn the swivel joint on the steering control rods until
the swivel joint is centered in the slot in the bellcrank.
SLOW
FAST
TRACKING
ADJUSTMENT
SEE OPERATOR'S
MANUAL
390s0198-1

13
Figure 11. Tracking Adjustment
PARKING BRAKE
1. Adjust the parking brake so that when the brake
hand lever is against the stop on the handle bar, the
brake levers on the brake shaft weldment are
against the stops on the engine deck.
2. Adjust the brake actuator rod on either side of the
machine to obtain proper brake adjustment.
CAUTION:
Adjust the brake only enough to hold the
machine. Excessive force may cause damage
to the machine or brake components.
3. If the machine pulls to one side. Stop the mower by
placing the steering control levers in the neutral
position. Using the adjustment wrench located on the
left side of the machine, turn the tracking adjustment
nut on the slower side counter clockwise until the
machine tracks straight. (See Figure 11)
4. Bring the steering control levers back to the neutral
lock position and check to see that the machine does
not creep forward on the adjusted wheel.
5. If the machine creeps in neutral you have moved out
of the neutral band and will have to turn the tracking
adjustment nut clockwise until the machine does not
creep.
6. Repeat steps 1 and 2. If the machine continues to
pull to one side, stop the mower by placing the
steering control levers in the neutral position. Turn
the tracking adjustment nut on the faster side clock-
wise until the machine tracks straight.
7. If tracking cannot be achieved, contact your Scag
servicing dealer.

14
COMMENTS
PROCEDURE
LUBRICATION & MAINTENANCE
+Greasespindleuntilgreasecomesoutthereliefvalve
CompatibleGreases: LidokEP#2(foundatindustrialshops)
RonexMP(Exxonservicestations)
ShellAlvania(Shellservicestations)
Mobilux#2(Mobilservicestations)
SuperLubMEP#2(Conocoservicestations)
X
XCheck all hardware for proper tightness
Change engine oil and filter at 5 hours
X Checkengine oil Do not over fill
X Remove debris from under belt cover More often if needed
X Sharpen cutter blades More often if needed
X Grease spindle bearings +USLithiumMPWhiteGrease2125
X Cleanairfilter More often if needed
X Check belt tension Adjust as needed
X Check tire pressure Add or adjust as required
X Checkbattery level Adjust as needed
X Replaceairfilter More often if needed
X Grease caster wheel bearings Chassis grease
X Grease caster wheel pivot shafts Chassis grease
X Grease idler pulley bracket on cutter deck Chassis grease
X Change hydrostatic oil filter Cleanarea beforeremovingthe filter
X Change engine oil and filter Seeenginemanufacturerinformation
X Greaseidlerarmpivots Chassis grease
X Grease brake hand lever Chassis grease
X Grease brake actuator levers Chassis grease
X Check all hardware for proper tightness
X Adjust air gap on electric clutch Contact your Scag dealer for information about
X Drain hydraulic system and replace oil making thisadjustment.
BREAK-IN
8HOURS(DAILY)
40HOURS(WEEKLY)
100HOURS(BIWEEKLY)
500HRSOR ANNUALLY

15
HYDRAULIC SYSTEM
Checking Hydraulic Oil Level
-IMPORTANT-
correct immediately.
If the oil level is consistently low, check for leaks and
1. Wipe dirt and contaminants from around the
reservoir cap. Remove the cap from the hydraulic oil
reservoir.
2. Visually check the level of hydraulic oil. Hydraulic oil
must be at least 2" inches from top of the filler neck.
If the level cannot be determined visually, use a clean
tape measure to check the level. If the fluid is low,
add 20W50 motor oil. DO NOT overfill; (overfilling
the oil reservoir may cause oil seepage around the
cap area).
3. Clean the fill cap and install it onto the reservoir.
The hydraulic oil level should be checked after the first
10 hours of operation. Thereafter, check the oil after
every 200 hours of machine operation or monthly,
whichever occurs first.
Changing Hydraulic Oil
The hydraulic oil should be changed after every 500
hours or annually, whichever occurs first. The oil should
also be changed if the color of the fluid has become
black or milky.Ablack color and/or a rancid odor usually
indicates possible overheating of the oil, and a milky color
usually indicates water in the hydraulic oil.
2. Place a suitable container under the hydraulic oil
drain. Remove the fill cap from the reservoir.
Remove the drain cap from the T-Fitting located on
the hydraulic system filter head. (See Figure 12).
Allow the fluid to drain into the container and
properly discard it.
3. Reinstall the drain cap onto the T-Fitting and be sure
itis tight.
Figure 12 Hydraulic Oil Drain Cap
Hydraulic Oil
Drain Cap
2003SWZ-Oil Drain
Filter Head
Hydraulic Oil
Filter
1. Park the mower on a level surface and stop the
engine.
Changing Hydraulic Oil Filter Element
The hydraulic oil filter should be changed after every 500
hours of operation or annually, whichever occurs first.
1. Remove the oil filter element (Figure 12) and
properly discard it. Fill the new filter with clean oil
and install the filter. Hand tighten only.
-NOTE-
The hydraulic oil should be changed if you
notice the presence of water or a rancid odor
to the hydraulic oil.
-NOTE-
Before refilling the hydraulic oil reservoir the
hydraulic oil filter should be changed as well.
See instructions outlined below.
4. Fill the reservoir to 2" inches from the top of the filler
neck with 20W50 motor oil.
5. Replace the reservoir fill cap. Start the engine and
drive forward and backward for two minutes.
Check the oil level in the reservoir. If necessary, add
oil to the reservoir.

16
2. Run the engine at idle speed with the speed control
lever in neutral for five minutes.
3. Check the oil level in the hydraulic tank. It must be
2" inches from the top of the filler neck. If necessary,
add SAE 20W50 motor oil.
Checking Engine Crankcase Oil Level
The engine oil level should be checked after every 8
hours of operation or daily as instructed in the Engine
Operator’s Manual furnished with this mower.
Changing Engine Crankcase Oil
After the first 5 hours of operation, change the engine
crankcase oil and replace the oil filter. Thereafter,
change the engine crankcase oil after every 100 hours of
operation or bi-weekly, whichever occurs first. Refer to
the Engine Operator’s Manual furnished with this mower
for instructions.
Changing Engine Oil Filter
After the first 5 hours of operation, replace the engine oil
filter. Thereafter, replace the oil filter after every 200
hours of operation or every month, whichever occurs
first. Refer to Engine Operator’s Manual for instructions.
Engine Air Cleaner
For any air cleaner, the operating environment dictates
how often the air cleaner should be serviced. Refer to
the Engine Operator’s Manual furnished with this mower
for instructions.
BATTERY (ELECTRIC START UNITS ONLY)
Checking Electrolyte Level and Cleaning
Battery
This machine was equipped from the factory with a
sealed battery. Maintenance is not required to maintain
the electrolyte level. Dirt and fluid on the top of the
battery can cause the battery to discharge. Corrosion of
the battery terminals or loose connections will cause poor
battery performance.
Lead-acid batteries produce flammable and
explosive gases.To avoid personal injury when
checking,testing or charging batteries,DO NOT
use smoking materials near batteries. Keep arcs,
sparks and flames away from batteries. Provide
proper ventilation and wear safety glasses.
WARNING:
Batteryposts,terminals,andrelatedaccessories
contain lead and lead compounds, chemicals
knowntocausecancerandreproductive harm.
Washhandsafterhandling.
WARNING:
1. Loosen the two plastic wing nuts and then remove the
battery cover.
2. Clean the cable ends and battery posts with steel wool.
Use a solution of baking soda and water to clean the
battery. Do not allow the solution to enter the battery
cells.
3. Tighten the cable connections securely and apply a
light coat of silicone dielectric grease to the terminal
connections to prevent corrosion.
4. Install the battery cover.
In extremely dusty conditions it may be
necessary to service the air cleaner daily
to prevent engine damage.
-NOTE-