Scag Power Equipment SWZU User manual

MODEL SWZU
OPERATOR’SMANUAL
THIS MANUAL CONTAINS 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. THESPECIFICMODELSTHAT THIS
BOOK COVERS ARE CONTAINED ON THE
INSIDECOVER. BEFOREOPERATINGYOUR
MACHINE, PLEASE READ ALL THE INFOR-
MATION ENCLOSED.
PART NUMBER 03067

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 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.
WARNING:
This manual covers the operating instructions
and illustrated parts list for:
SWZU36-15KH with a serial number of 4780001-4789999
SWZU48-17KA with a serial number of 4790001-4799999
Always use the entire serial number listed on the serial number
tag when referring to this product.

TABLE OF CONTENTS
SUBJECT PAGE
Introduction.................................................................................................. 1
General Safety Instructions.......................................................................... 1
Signal Words ............................................................................................... 1
Before Operating ......................................................................................... 2
While Operating........................................................................................... 2
Maintenance and Storage ........................................................................... 3
Initial Run-In Procedures ............................................................................. 4
Mower Operation ......................................................................................... 4
Cutter Deck Belt Adjustments...................................................................... 5
Cutter Deck Adjustments ............................................................................. 6
Blade Height Adjustments ........................................................................... 6
Cutter Blades............................................................................................... 7
Neutral Adjustment ...................................................................................... 7
Steering Control Rod Adjustment ................................................................ 8
Tracking Adjustment .................................................................................... 8
Parking Brake .............................................................................................. 8
Lubrication and Maintenance Chart ............................................................ 9
Troubleshooting Cutting Conditions ............................................................ 10-12
Technical Specifications.............................................................................. 13-14
Notes..........................................................................................................................15
I
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TECHNICIAN
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Training Council
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TABLE OF CONTENTS
(CONTINUED)
SUBJECT PAGE
Illustrated Parts List
SWM-36"Cutter Deck........................................................................ 16-17
SWM-48",52",61",72"CutterDecks...................................................... 18-19
EngineDeck................................................................................................ 20-21
DriveAndBrakeComponents..................................................................22-23
HandleAssembly........................................................................................ 24-25
Hydraulic Assembly.......................................................................... 26-27
Hydraulic Pump Assembly................................................................ 28-29
Engine DeckWire Harness-Kohler (Single Cyl.) & 17KA................... 30
Engine Deck Wire Harness- Kohler Command V-Twin...................... 30
HandleWireHarness-ElectricStart......................................................... 31
WireHarnessW/Relay............................................................................... 31
EngineDeckWire Harness-14 Kawasaki...............................................32
HandleWireHarness-ManualStart......................................................... 32
ReplacementDecals.................................................................................. 33-35
WarrantyStatement...............................................................InsideBackCover
II

1
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
safetymessagesfoundonthedecalsandthroughout
this manual. The message that follows the symbol
containsimportantinformationaboutsafety. To
avoid injury and possible death, carefully read the
message! Be sure to fully understand the causes of
possible injury or death.
SignalWord:
It is a distinctive word on safety decals and through-
out this manual that alerts the viewer to the existence
and relative degree of the hazard.
The signal word “DANGER” denotes that an ex-
tremely hazardous situation exists on or near the
machinethat could result in high probability of death
or irreparable injury if proper precautions are not
taken.
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.
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.
INTRODUCTION
Your mower was built to the highest standards in the
industry. However,theprolongedlife and maximum
efficiency of your mower depends on you following
theoperating,maintenanceandadjustmentinstruc-
tionsinthismanual.
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.
A replacement Operator's Manual is available from
your Scag Servicing Dealer or by contacting Scag
Power Equipment, Service Department, at P.O. Box
152, Mayville, WI 53050. Please indicate the com-
plete model and serial number of your Scag product.
USEOFOTHERTHANORIGINAL SCAG
REPLACEMENTPARTSWILLVOIDTHE
WARRANTY.
The “Right” and “Left”, “Front” and “Rear” of the
machine are referenced from the operator’s perspec-
tive when in the normal operating position and facing
the forward travel direction.
GENERALSAFETYINSTRUCTIONS
READTHISOPERATOR'SMANUALand
instructionsfurnishedwithattachments.
Performonlythosemaintenance procedures de-
scribed in this manual. If major repairs are ever
needed or assistance is desired, contact an Author-
izedScag Dealer. To ensure optimum performance
and safety, always purchase genuine SCAG replace-
ment parts and accessories.
Your safety and the safety of others depends signifi-
cantlyuponyourknowledgeandunderstandingofall
correct operating practices and procedures of this
machine.
WARNING:
CAUTION:

2
BEFOREOPERATING
1. Know the controls and how to stop quickly.
2. Do not allow children to operate the machine. Do
not allow adults to operate the machine without
properinstruction.
3. Remove all debris or other objects that might be
picked up and thrown by the cutter blades. Keep
all bystanders away from the mowing area.
4. Keep all shields, safety devices, and decals in
place. If a shield, safety device or decal is
defective or damaged, repair or replace it before
operating. Also, check all nuts, bolts and screws
for proper tightness, to assure the machine is in
safeoperatingcondition.
5. Do not operate the machine while wearing san-
dals, tennis shoes, sneakers or shorts. Also, do
not wear loose fitting clothing which could get
caught in moving parts. Always wear long pants
and substantial shoes. Wearing safety glasses and
safety shoes is advisable and required by some
local ordinances and insurance regulations.
6. Fill the fuel tank with clean, fresh gasoline, with a
minimum octane rating of 87. Avoid spilling
gasoline. Gasoline is highly flammable, handle it
carefully.
A. Use an approved gasoline container.
B. Do not fill the tank while the engine is hot or
running.
C. Donotsmoke while handling gasoline.
D. Fill the fuel tank outdoors and up to approxi-
mately 1" (25 mm) below the bottom of the
filler neck.
E. Wipe up any spilled gasoline.
7. Beforeattemptingtostarttheengine,movethe
speed adjustment lever into the neutral position,
movethe bladeengagementswitch totheOFF
position, apply the parking brake, and move the
neutrallatches toneutral.
WHILEOPERATING
1. 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
adjustment lever is in the neutral position.
2. Do not run the engine in a confined area without
adequateventilation. Exhaustfumes arehazard-
ous and could possibly be deadly.
3. Usingthemachinedemandsattention. To
prevent loss of control:
A. Mow only in daylight or when there is good
artificial light.
B. Watch for holes or other hidden hazards.
C. Do not drive close to a drop-off, ditch, creek
bank,orotherhazard.
D. Reduce speedwhen making sharpturns and
whenturningon hillsides.
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.
4. 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. If the
dischargearea shouldplug,shut theengineoff
and wait for all movement to stop before remov-
ingtheobstruction.
5. Disengage the blades and wait for them to stop
before crossing gravel drives, walks or roads.
6. Shut the engine off and wait until the blades come
to a complete stop before removing the grass
catchercontainer.
7. Never raise the cutter deck while the blades are
rotating.
8. Always park the mower and/or start the engine on
a level surface. Apply the parking brake to
preventthe mower frommoving when youarenot
in the operator’s position.

3
13. Do not pass or stand on the grass discharge side
ofany mowerwith the enginerunning. Stop
operation when another person approaches.
9. If the cutting blades should strike a solid object
or the equipment should start to vibrate abnor-
mally,stop theengine, disconnect thespark plug
wire, and check immediately for the cause.
Vibration is generally a warning of trouble.
Checkthe machine fordamagedor 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
aretight.
10. Reduce speed and exercise extreme caution on
slopes and in sharp turns to prevent tipping or
loss of control. Be especially cautious when
changingdirections on slopes.
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
useextreme caution. ALWAYSFOLLOWOSHA
APPROVED OPERATION.
11. Do not touch the engine or muffler while the
engine is running or soon after it is stopped.
These areas could be hot enough to cause a burn.
12. Before leaving the operator’s position or leaving
themowerunattended,movethespeedadjustment
lever into the neutral position, place the neutral
latches in the neutral lock position, apply the
parkingbrake,andmovethebladeengagement
switch to OFF. Shut the engine OFF and remove
thekey.
14. UseonlyScagapproved ridingattachments.
ScagApprovedRidingAttachments:
RS-ZT
Usingunapprovedattachments,(especially"stand-
up"ridingattachments)maybehazardous.
MAINTENANCE AND STORAGE
1. Disconnect the spark plug wire from the spark
plugto prevent accidental startingofthe engine
whenservicing,adjusting orstoring themachine.
2. If the mower must be tipped to perform mainte-
nanceor adjustment,remove the battery,drain the
gasolinefrom the fuel tank and the oil from the
crankcase.
3. To reduce potential fire hazard, keep the engine
free of excessive grease, grass, leaves and
accumulationsofdirt.
4. Be sure the machine is in safe operating condition
by keeping nuts, bolts, and screws tight. Check
theblademountingbolts andnutsfrequentlytobe
suretheyaretightened.
5. Iftheenginemustberunningtoperformamainte-
nanceadjustment,keephands,feet,clothingand
other parts of the body away from the cutter deck
blades and other moving parts.
6. Donotoverspeed theengineby changinggover-
nor settings. To be sure of safety and accuracy,
haveanauthorizeddealercheckmaximumengine
speed with a tachometer.
7. Theenginemustbeshutoffbeforecheckingthe
oil or adding oil to the crankcase.
8. 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.
WARNING:
WARNING
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109

4
9. Always store gasoline in a safety-approved, red
container.
10. Be careful when servicing the battery as it con-
tains acid, which is corrosive and could cause
burnstoskinandclothing.
11. Batteries release explosive gases when being
charged or discharged. Keep batteries away from
any source of sparks and/or flame.
12. Make sure all hydraulic connections are tight and
all hydraulic hoses and lines are in good condi-
tionbeforestartingthemachine.
13. Hydraulic fluid is under high pressure. If you
need service on your hydraulic system, please see
yourauthorizedScagdealer.
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 6-8)
2. Check the tires for proper pressure.
Caster Wheels 25 psi.
Drive Wheels 15 psi.
3. Check for loose hardware. Tighten as needed.
4. Checkthe safety switches for proper adjustment:
* Theengine should crank and start if the
machineisinneutral,thePTOengagement
switch is OFF and the parking brake is
ON.
5. Apply lubricant to all the grease fittings. Lubri-
cant was applied at the factory. This is just a
precautionarychecktomakesurethatallthe
fittingshave beenlubricated.
gasoline.
* Open the fuel valve on the bottom of the fuel
tank.
-NOTE-
Use gasoline with an octane rating no less than
87.
* The speed adjustment lever must be in NEU-
TRAL.
* The blade clutch switch must be in the OFF
position.
* The neutral latches must be in the neutral lock
position.
* Thekey switch must be on.
*Theparkingbrakemustbeon.
3. Starttheengine:
* Choke as required. If the engine is cold, pull
thechoke knob out on the 17HP Kawasaki
engine; or push the throttle control all the way
forward on the 15HP Kohler engine. When
the engine starts, slowly push the choke in
(17HP) or pull back on the throttle (15HP). If
the engine stalls, repeat the above operation.
Whentheengineiswarm,choking maynotbe
necessary.
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.
MOWEROPERATION
1. Readandunderstandthesafetyinstructions
beforeattemptingtooperatethismachine.
2. Before starting the engine:
* Check the oil level in the engine and the
hydraulic reservoir.
* Fill the fuel tank with clean, fresh, lead-free

5
-NOTE-
When the PTO is engaged or (possibly) disen
gaged, 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 1/2
throttle, not under full load.
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 cutter blades.
5. Release the parking brake. Move the speed
adjustment lever to the desired mowing speed.
-NOTE-
Top speed is suggested only for transport!
6. While squeezing the steering brake levers with
both hands, release both neutral latches.
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.
ire pressure can be adjusted forire pressure can be adjusted for
ire pressure can be adjusted forire pressure can be adjusted for
ire pressure can be adjusted for
WARNING:
Figure 1. Dump Valves
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 cover.
390S0138
PULL UP TO ENGAGE
PUSH DOWN TO DISENGAGE
Access Right Dump Valve
From Front Of Machine
DumpValve Levers
(normal position)
SWZU99DV
10. To "freewheel" or move the machine around with-
outtheenginerunning,turnthedumpvalvelevers
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.

6
Figure 2. Cutting Height Adjustment
CUTTER DECK ADJUSTMENTS
Duetothemany cuttingconditions thatexist, itis
difficult to suggest a cutter deck setting that will work
for every lawn. There are two adjustments that can be
madeon 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
recommendedforbestcuttingperformance.
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
cuttingtipandground.
Changestothecuttingheightcan beachievedby
repositioning the cutter deck. (This adjustment will
also effect the pitch of the deck). There are eight
available positions from 1" to 4-1/2" (see Figure 2).
WARNING:
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.
1. Shut off the engine and remove the ignition key.
2. While holding up on the deck support handle, remove
the two hairpins from the adjusting pins on one side of
the cutter deck (Figure 2).
3. Lift or lower the deck to the desired cutting height and
reinstall the hairpins. A deck height decal is located
on the deck mounting frame as an aid in adjusting the
deck to the desired height.
4. Repeat the above process on the opposite side of the
cutter deck.
Remove Hair Pins SWU99DHA
CUTTER DECK PITCH ADJUSTMENTS
The cutter deck pitch adjustment has been set at the
factory an 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. Shutoff theengineandremovethe key.
2. Support the cutter deck with four blocks (you
will be removing the hair pins to make this
adjustment).
3. Removethe front hair pinsfromthe front deck
support pins.
4. Loosenthe jam nuts on the deck support pins.
5. Turnthe decksupport pins to lengthen orshorten
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.

7
CUTTER BLADES
Do not sharpen beyond 1/3 of the width of the blade.
(See figure 4)
-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.
COLD STARTING
Inthespringand fallwhenthemorningtemperatures
are cool it may be difficult to start the machine due to
the parasitic load from the hydraulic drive. To relive
this load pull out and up on the de-clutch chain lo-
cated on the right side of the machine behind the tire.
This will allow you to start the engine easily. When
the engine has warmed up, slowly release the de-
clutchchaintoengagethehydraulicsystem.
SC4O8G
ANGLE BLADE BACK
DO NOT CUT IN
X MUST NOT EXCEED
1/3 BLADE WIDTH
X
30
Figure 4. Blade Sharpening
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 the neutral
has come out of adjustment follow the proce-
dure below.
1. Raise the drive wheels off the ground and block
the caster wheels.
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 an note if the tires are
rotating.
4. Starting on the left side of the machine, rotate the
trackingadjustmentknobcounterclockwisejust
until the LH wheel starts to creep forward. Make
a note of the position of the adjusting knob (see
Figure 4).
5. Turntheadjusting knobclockwise justuntil the
wheel turns rearward. Make a note of the posi-
tion of the adjusting knob. To adjust neutral, split
the difference between the two noted positions of
theadjustingknob.
6. Turntheengineoff.
Figure 4. Neutral Adjustment
Figure 3. Deck Pitch Adjustment
SWU99PA
REMOVE HAIR PIN
LOOSEN
JAM NUT
481878
SLOW
FAST
TRACKING
ADJUSTMENT
SEE OPERATOR'S
MANUAL

8
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.Ifthemachinecreepsinneutralyouhavemovedout
oftheneutralbandandwillhavetoturnthetracking
adjustmentknobclockwiseuntilthemachine does
notcreep.
6.Repeatsteps1.and2. Ifthemachinepullstoone
side,turnthetrackingadjustmentknobonthefaster
side clockwise until the machine tracks straight.
8.If tracking cannot be achieved, contact your Scag
servicingdealer.
Figure 5. Tracking Adjustment
PARKING BRAKE
1.Adjusttheparkingbrakesothatwhenthebrake
handleverisagainstthestoponthehandlebar,the
brakeleversonthebrakeshaftweldmentare
againstthestopsontheenginedeck.
Adjustthebrakeonlyenoughtoholdthe
machine. Excessive force may cause damage
tothemachineorbrakecomponents.
2.Adjustthebrakeactuatorrodoneithersideofthe
machinetoobtainproperbrakeadjustment.
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.Removethespeedcontrolspring. Removethe
steeringcontrolrodswivelhairpin. Checkthe
locationof theswivelintheslottedholeinthebell
crank.
2.Turntheswiveljointonthesteeringcontrolrods
untiltheswiveljointiscenteredintheslotinthe
bellcrank.
3.Reinstallthespeedcontrolspringontotheswivel.
Installthehairpinontotheswivel.
TRACKING ADJUSTMENT
-NOTE-
Before proceeding with this adjustment, be sure
that the tire pressures are correct. (see page 4)
and that the neutral adjustment and the steering
control rod adjustment have been completed.
1.Withthemachineonaflatlevelsurface,startthe
engineandplacethespeedadjustmentleverintothe
speedthatwillmostoftenbeused.
2.Squeezethesteeringcontrolleversandreleasethe
neutrallatch. Slowlyreleasethesteeringcontrol
levers,allowingthemachinetomoveforward.
3.Ifthemachinepullstooneside,turnthetracking
adjustmentknobontheslowersidecounterclock-
wise until the machine tracks straight (see Figure
5).
CAUTION:
481878
SLOWFAST
TRACKING
ADJUSTMENT
SEE OPERATOR'S
MANUAL

9
COMMENTSCOMMENTS
COMMENTSCOMMENTS
COMMENTS
PROCEDUREPROCEDURE
PROCEDUREPROCEDURE
PROCEDURE
LUBRICALUBRICA
LUBRICALUBRICA
LUBRICATION & MAINTENANCETION & MAINTENANCE
TION & MAINTENANCETION & MAINTENANCE
TION & MAINTENANCE
+ Grease spindle until grease comes out the relief valve
Compatible Greases: Lidok EP #2 (found at industrial shops)
Ronex MP (Exxon service stations)
Shell Alvania (Shell service stations)
Mobilux #2 (Mobil service stations)
Super Lub M EP #2 (Conoco service stations)
X
XCheck all hardware for proper tightness
Change engine oil and filter at 5 hours
X Check engine 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 + US Lithium MP White Grease 2125
X Clean air filter More often if needed
X Check tire pressure Add or adjust as required
X Check battery level Adjust as needed
X Replace air filter 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 Clean area before removing the filter
X Change engine oil and filter See engine manufacturer information
X Grease idler arm pivots 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 this adjustment.
BREAK-INBREAK-IN
BREAK-INBREAK-IN
BREAK-IN
8 HOURS (DAILY)8 HOURS (DAILY)
8 HOURS (DAILY)8 HOURS (DAILY)
8 HOURS (DAILY)
40 HOURS (WEEKLY)40 HOURS (WEEKLY)
40 HOURS (WEEKLY)40 HOURS (WEEKLY)
40 HOURS (WEEKLY)
100 HOURS (BIWEEKLY)100 HOURS (BIWEEKLY)
100 HOURS (BIWEEKLY)100 HOURS (BIWEEKLY)
100 HOURS (BIWEEKLY)
500HRSORANNUALLY500HRSORANNUALLY
500HRSORANNUALLY500HRSORANNUALLY
500HRSORANNUALLY

10
Stringers - Occasional Low engine RPM Run engine at full 3600 RPM
Blades of Uncut
Grass Ground speed too fast Slow speed to adjust for conditions
Wet grass Cut grass after it has dried out
Dull blades, incorrect sharpening Sharpen blades
Deck plugged, grass accumulation Clean underside of deck
Belts slipping Adjust belt tensions
Streaking - Strips of Dull, worn blades Sharpen blades
Uncut Grass in Cutting
Path Incorrect blade sharpening Sharpen blades
Low engine RPM Run engine at full 3600 RPM
Belt slipping Adjust belt tension
Deck plugged, grass accumulation Clean underside of deck
Ground speed too fast Slow speed to adjust for conditions
Wet grass Cut grass after it has dried out
Bent blades Replace blades
Width of Deck
SGB018
CONDITION CAUSE CURE
Width of Deck
SGB020
Width
of
Deck
Width
of
Deck
SGB019
Streaking - Strips of Not enough overlapping Increase the overlap of each
Uncut Grass Between between rows pass
Cutting Paths
TROUBLESHOOTING CUTTING CONDITIONS

11
CONDITION
TROUBLESHOOTING
CAUSE CURE
Sloping Ridge Across Tire pressures not equal Check and adjust tire pressure
Width of Cutting Path Wheels uneven Check and adjust tire pressure
Deck mounted incorrectly See your authorized SCAG dealer
Uneven Cut on Flat Lift worn off of blade Replace blade
Ground - Wavy
High-Low Blade upside down Mount with cutting edge toward
Appearance, ground
Scalloped Cut, or
Rough Contour Deck plugged,grass accumulation Clean underside of deck
Too much blade angle (deck pitch) Adjust pitch and level
Deck mounted improperly See your authorized SCAG dealer
Bent spindle area See your authorized SCAG dealer
Dull blade Sharpen blade
Uneven Cut on Uneven ground May need to reduce ground speed,
Uneven Ground - raise cutting height, and/or change
Wavy Appearance, direction of cut
High-Low Scalloped
Cut, or Rough Contour
Width of Deck
SGB020
Width of Deck
SGB021
Width of Deck
SGB023

12
Scalping - Blades Low tire pressures Check and adjust pressures
Hitting Dirt or
Cutting Very Close to Ground speed too fast Slow speed to adjust for conditions
the Ground Cutting too low May need to reduce ground speed,
raise cutting height, change direction
of cut, and/or change pitch and level
Rough terrain May need to reduce ground speed,
raise cutting height, and/or change
direction of cut
Ground speed too fast Slow speed to adjust for conditions
Wet grass Cut grass after it has dried out
Step Cut Blades not mounted evenly Adjust pitch and level
Ridge in Center of
Cutting Path Bent blade Replace blade
Internal spindle failure See your authorized SCAG dealer
Mounting of spindle incorrect See your authorized SCAG dealer
Slope Cut - Sloping Bent spindle mounting area See your authorized SCAG dealer
Ridges Across Width
of Cutting Path Internal spindle failure See your authorized SCAG dealer
Bent deck housing See your authorized SCAG dealer
TROUBLESHOOTING
CONDITION CAUSE CURE
Width of Deck
SGB024
Width of Deck
SGB025
Width of Deck
SGB022

13
TECHNICALSPECIFICATIONS
ENGINES
General Type: Heavy duty industrial/commercial
Brand: Kohler, Kawasaki,
Models: Kohler CV15T;Kaw. FH500V
Horsepower: Kohler 15HP; Kaw. 17HP
Type: 4 cycle gas, vertical shaft engines
Displacement: Kohler: 15HP = 426cc
Kawasaki: 17HP = 494cc
Cylinders: Kohler - 1 cast iron; Kawasaki - 2 cast iron
Governor: Mechanical type governor with variable speed control set
at 3600 rpm (+75 rpm), idle set at 1200 rpm (+75 rpm)
Exhaust Group: Single exhaust canister muffler
Fuel Pump Group: Varied - See manufacturer's specifications
Oil Pump Group: Varied - See manufacturer's specifications
Valve Group: Varied - See manufacturer's specifications
Starter/Electrical: Electronic Ignition with recoil starter
ENGINE DECK
Thickness: 7 gauge steel
Fuel Tank: 5 gallon (19.0 liters) seamless polyethylene
Drive Wheels/Tires: SWZU36 - 18 x 6.50-8 four-ply pneumatic tubeless
SWZU48 - 18 x 8.50-8 four-ply pneumatic tubeless
Brakes: Dynamic braking through hydro drive system
Axles: 1" tapered
Handle Bars: 1-1/4" diameter
DRIVE SYSTEM
Type: Hydro drive with two variable displacement pumps and two
cast-iron high torque motors
Hydro Pumps: Two Hydro-Gear Model BDP 10L pumps with dump valves for
movement without running the engine
Drive Wheel Motors: Two 12 cu. inch cast-iron high torque motors
Hydro Fluid Cooling Group: 4 qt. capacity cooling, reservoir, uses SAE 20W50 fluid and
10 micron filter
Steering / Travel Control:: Independent handle controls for each wheel, squeeze to move
from forward to neutral to reverse, neutral lock lever, speed
range controlled with single lever (patented design), "Adjust-A-
Trac" in-field tracking adjustment with no tools necessary
Parking Brakes: 7.5" drum, band brake, one on each wheel
Dump Valves: Allows for movement without engine running
Cold Start: "De-Clutch Cold-Start" enhances cold weather starting using a
pull chain to relieve pump pressure
Axles: 1" tapered motor shafts
Wire Harness: 14 gauge wire
Safety Group: Handle actuated operator presence system (patented design),
blade / clutch and transmission interlock to engine kill
ForwardSpeedRange: 0 to 7.4 mph
ReverseSpeedRange: 0 to 3.0 mph
Date of Issue: April, 1999
Specifications Subject to Change Without Notice

14
TECHNICAL SPECIFICATIONS (CON'T.)
CUTTERDECKS SWUM 36, SWUM 48
Type: Out-front design with anti-scalp rollers
Construction: SWUM36,48: 7-gauge steel with 7-gauge (3/16") steel skirt
Cutting Width: 35.5" (90.2 cm), 48.0 (122.0 cm)
Cutting Height Adjustment: Adjustable from 1" to 4-1/2" in 1/2" increments
Cutter Blades: .204 thick, milled edge, 5150 alloy steel
SWUM 36: Two (2) 18" SWUM 48: Three (3) 16.5"
BladeEngagement: Electric blade brake clutch with instrument panel switch
DischargeOpening: Extrawide11.5",dischargeopeningwithspringloaded
dischargechute
CasterWheels: 11x 4.5-5 smooth tread flotation, split rims, roller
bearings, with quick pin removal
Spindles: Cast housing, taper roller bearing, low maintenance with
top access grease fitting and grease overfill relief poppet
Spindle Pulleys: Cast-iron with easily removed taper hubs
Idler Pulley: 5" diameter pulley, welded and riveted construction,
1-3/8" O.D. Bearing
Idler Arm: Heavy duty dual ball bearing mounting
Cutter Deck Belts: B-section with Kevlar cord
ADDITIONAL SPECIFICATIONS
OPTIONAL ITEMS/ATTACHMENTS
Fabric Grass Catcher: GC-F4 Grass Catcher with 4 cubic ft. capacity
Metal Grass Catcher: GC-4D Grass Catcher with 4 cubic ft. capacity and rope pull
dump or pick-up and dump
Steerable Sulky: RS-ZT Steerable Sulky with padded seat and full articulation
for zero-radius turning
Mulching Plate: Steel plate fits over discharge opening. No blade change or
or removal required. Installs and removes in the field.
APPROXIMATE DIMENSIONS SWZU36 SWZU48
Length: 77.5" 76.0"
LengthwithGrassCatcher: 77.5" 76.0"
TrackingWidth: 36.0" 38.0"
Width: 46.5" 58.0"
Width(withdischargechuteup): 37.5" 48.0"
With with grass catcher: 55.0" 64.0"
Height: 43.0" 43.0"
Height with grass catcher: 43.0" 43.0"
Weight 575 lbs. 640 lbs.
Weight with grass catcher: 615 lbs. 680 lbs.
Turning Radius: Zero Zero
Date of Issue: April, 1999
SpecificationsSubject To Change Without Notice

15
Notes

16
36" CUTTER DECKS
To"A"
"A"
1
2
3
4
5
65
78
910 9
11
12
13
14
15
16
17
18
19
19A
20
21
22 23
24
25
26
27
22
28
29
30
31 32
13 34
13 36
3738
39
40
41
42
43
42
44
45
44
45
48
49 50
51 52
53
54
55
56
57
58
59
49
48
62
53
50
60
32
61
50
47
39
51
47
46
SWU99CD36
33
35
34 41
50
63
36" CUTTER DECKS