Scag Power Equipment SW User manual

MODEL SW
OPERATOR’S MANUALOPERATOR’S MANUAL OPERATOR’S MANUALOPERATOR’S MANUAL
OPERATOR’S MANUAL
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 03055

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:
SW32-13KA with a serial number of 3970001 to 3979999
SW36-13KA with a serial number of 3980001 to 3989999
SW36-13KH with a serial number of 3990001 to 3999999
SW48-14KA with a serial number of 4000001 to 4009999
SW48-15KH with a serial number of 4010001 to 4019999
SW48-17KA with a serial number of 4020001 to 4029999
SW-17KA with a serial number of 4690001 to 4699999
SWM-52/E with a serial number of 4110001 to 4119999
SWM-61/E with a serial number of 4120001 to 4129999
SWM-72/E with a serial number of 4130001 to 4139999
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
Transmission Drive Belt............................................................................... 5
Drive Control Adjustments........................................................................... 6
Cutter Deck Adjustments ............................................................................. 6
Blade Height Adjustments ........................................................................... 7
Cutter Blades............................................................................................... 7
Lubrication and Maintenance Chart ............................................................ 8
Troubleshooting Cutting Conditions ............................................................ 9 - 11
Technical Specifications.............................................................................. 12 -13
I
WE SUPPORT OPE
TECHNICIAN
CERTIFICATION
Equipment & Engine
Training Council
c
MEMBER

TABLE OF CONTENTS
(CONTINUED)
SUBJECT PAGE
Illustrated Parts List
SWM-32",36"CutterDecks....................................................................... 14-15
SWM-48",52",61",72"Cutter Decks...................................................... 16-17
EngineDeck................................................................................................ 18-19
HandleAssembly........................................................................................ 20-21
InstrumentPanel......................................................................................... 22
PeerlessTransmission............................................................................... 23
EngineDeckWire Harness-14Kawasaki............................................ 24
WireHarnessW/Relay............................................................................... 24
HandleWireHarness-ManualStart......................................................... 25
Engine DeckWire Harness-Kohler (Single Cyl.) & 17 KA................... 26
ReplacementDecals.................................................................................. 27-29
WarrantyStatement...............................................................InsideBackCover
II

1
SIGNAL WORDS
Thissymbolmeans“Attention!BecomeAlert!Your
SafetyisInvolved!". Thesymbolisusedwiththe
followingsignalwordstoattractyourattentiontosafety
messagesfoundonthedecalsandthroughoutthis
manual. Themessagethatfollowsthesymbolcontains
importantinformationaboutsafety. Toavoidinjuryand
possibledeath,carefullyreadthemessage! Besureto
fullyunderstandthecausesofpossibleinjuryordeath.
SignalWord:
Itisadistinctivewordonsafetydecalsandthroughout
thismanualthatalertstheviewertotheexistenceand
relativedegreeofthehazard.
Thesignalword“DANGER”denotesthatanextremely
hazardoussituationexistsonornearthemachinethat
couldresultinhighprobabilityofdeathorirrepairable
injuryifproperprecautionsarenottaken.
Thesignalword“WARNING”denotesthatahazard
existsonornearthemachinethatcanresultininjuryor
deathifproperprecautionsarenottaken.
Thesignalword“CAUTION”isareminderofsafety
practicesonornearthemachinethatcouldresultin
personalinjuryifproperprecautionsarenottaken.
INTRODUCTION
Yourmowerwasbuilttothehigheststandardsinthe
industry. However,theprolongedlifeandmaximum
efficiencyofyourmowerdependsonyoufollowingthe
operating,maintenanceandadjustmentinstructionsin
thismanual.
Weencourageyoutocontactyourdealerforrepairs.
AllScagdealersareinformedofthelatestmethodsto
servicethisequipmentandprovidepromptandefficient
serviceinthefieldorattheirserviceshop. Theycarrya
fulllineofScagserviceparts.
AreplacementOperator'sManualisavailablefromyour
ScagServicingDealerorbycontactingScagPower
Equipment,ServiceDepartmentatP.O.Box152,
Mayville,WI 53050. Pleaseindicatethecomplete
modelandserialnumberofyourScagproduct.
USEOFOTHERTHANORIGINALSCAG
REPLACEMENTPARTSWILLVOIDTHE
WARRANTY.
The “Right” and “Left”, “Front” and “Rear” of the
machinearereferencedfromtheoperator’sperspec-
tive when in the normal operating position and facing
theforwardtraveldirection.
GENERAL SAFETY INSTRUCTIONS
READTHISOPERATOR'SMANUALand
instructionsfurnishedwithattachments.
Performonlythosemaintenanceprocedures
described in this manual. If major repairs are ever
needed or assistance is desired, contact an Authorized
Scag Dealer. To ensure optimum performance and
safety, always purchase genuine SCAG replacement
partsandaccessories.
Your safety and the safety of others depends
significantlyupon your knowledge and understanding
ofall correct operating practices and proceduresof
thismachine.
WARNING:
CAUTION:

2
BEFORE OPERATING
1. Knowthecontrolsandhowtostopquickly.
2. Donotallowchildrentooperatethemachine. Do
notallowadultstooperatethemachinewithout
properinstruction.
3. Removealldebrisorotherobjectsthatmightbe
pickedupandthrownbythecutterblades. Keepall
bystandersawayfromthemowingarea.
4. Keepallshields,safetydevices,anddecalsinplace.
Ifashield,safetydeviceordecalisdefectiveor
damaged,repairorreplaceitbeforeoperating.
Also,checkallnuts,boltsandscrewsforproper
tightness,toassurethemachineisinsafeoperating
condition.
5. Donotoperatethemachinewhilewearingsandals,
tennisshoes,sneakersorshorts. Also,donotwear
loosefittingclothingwhichcouldgetcaughtin
movingparts. Alwayswearlongpantsandsubstan-
tialshoes. Wearingsafetyglassesandsafetyshoes
isadvisableandrequiredbysomelocalordinances
andinsuranceregulations.
6. Fillthefueltankwithclean,freshgasoline,witha
minimumoctaneratingof87. Avoidspillinggaso-
line. Gasolineishighlyflammable,handleitcarefully.
A. Useanapprovedgasolinecontainer.
B. Donotfillthetankwhiletheengineishotor
running.
C. Donotsmokewhilehandlinggasoline.
D. Fillthefueltankoutdoorsanduptoapproxi-
mately1"(25mm)belowthebottomofthefiller
neck.
E. Wipeupanyspilledgasoline.
7. Beforeattemptingtostarttheengine,shiftthe
transmissionintoneutral,movethebladeengage-
mentswitchtotheOFFposition,andmovethe
neutrallatchestoneutral.
WHILE OPERATING
1. Starttheenginewhentheneutrallatchesareinthe
neutrallockposition,thecutterbladesaredisen-
gaged,andthetransmissionisinneutral.
2. Donotruntheengineinaconfinedareawithout
adequateventilation. Exhaustfumesarehazardous
andcouldpossiblybedeadly.
3. Usingthemachinedemandsattention. To
preventlossofcontrol:
A. Mowonlyindaylightorwhenthereisgood
artificiallight.
B. Watchforholesorotherhiddenhazards.
C. Donotdriveclosetoadrop-off,ditch,creek
bank,orotherhazard.
D. Reducespeedwhenmakingsharpturnsand
whenturningonhillsides.
E. Alwaysbesureofyourfooting. Keepafirm
holdonthehandlesandwalk---neverrun.
F. Donotoperatewhereconditionsareslippery.
4. Thedischargechutemustalwaysbeinstalledandin
thedownpositiononthesidedischargecutterdeck
exceptwhentheScagoptionalgrasscatcheror
mulchingplateareproperlyinstalled. Ifthedis-
chargeareashouldplug,shuttheengineoffandwait
forallmovementtostopbeforeremovingthe
obstruction.
5. Disengagethebladesandwaitforthemtostop
beforecrossinggraveldrives,walksorroads.
6. Shuttheengineoffandwaituntilthebladescometo
acompletestopbeforeremovingthegrasscatcher
container.
7. Neverraisethecutterdeckwhilethebladesare
rotating.
8. Alwaysparkthemowerand/orstarttheengineona
levelsurface.

3
13. Do not pass or stand on the grass discharge side
of any mower with the engine running. Stop
operation when another person approaches.
14. Use only Scag approved riding attachments.
Scag Approved Riding Attachments:
RS-2
RS-ZT
Usingunapprovedattachments,(especially"stand-
up" riding attachments) may be hazardous.
MAINTENANCE AND STORAGE
1. Disconnect the spark plug wire from the spark
plug to prevent accidental starting of the engine
when servicing, adjusting or storing the machine.
2. If the mower must be tipped to perform mainte-
nance or adjustment, remove the battery, drain
the gasoline from 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 accu-
mulations of dirt.
4. 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.
5. If the engine must be running to perform a
maintenance adjustment, keep hands, feet, cloth-
ing and other parts of the body away from the
cutter deck blades and other moving parts.
6. Do not overspeed the engine by changing gover-
nor settings. To be sure of safety and accuracy,
have an authorized dealer check maximum engine
speed with a tachometer.
7. The engine must be shut off before checking the
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
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
9. Ifthecuttingbladesshouldstrikeasolidobjector
theequipmentshouldstarttovibrateabnormally,
stoptheengine,disconnectthesparkplugwire,and
checkimmediatelyforthecause. Vibrationis
generallyawarningoftrouble.Checkthemachine
fordamagedordefectiveparts. Repairanydamage
beforestartingtheengineoroperatingthecutter
deck. Besurethebladesareingoodconditionand
thebladeboltsaretight.
10. Reducespeedandexerciseextremecautionon
slopesandinsharpturnstopreventtippingorloss
ofcontrol. Beespeciallycautiouswhenchanging
directionsonslopes.
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
extremecaution. ALWAYSFOLLOWOSHA
APPROVEDOPERATION.
11. Donottouchtheengineormufflerwhiletheengine
isrunningorsoonafteritisstopped.Theseareas
couldbehotenoughtocauseaburn.
12. Beforeleavingtheoperator’spositionorleavingthe
mowerunattended,shiftthetransmissioninto
neutral,placetheneutrallatchesintheneutrallock
position,andmovethebladeengagementswitchto
OFF. ShuttheengineOFFandremovethekey.
WARNING:

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
burns to skin and clothing.
11. Batteries release explosive gases when being
charged or discharged. Keep batteries away
from any source of sparks and/or flame.
INITIAL RUN-IN PROCEDURES
(FIRST DAY OF USE OR APPROXI-
MATELY 10 HOURS)
1. Check the belts for proper tension at 2, 4 and 8
hours. Adjust as needed.
2. Check the steering control rods for neutral
adjustment. (See Adjustments, page 6)
3. Checkthetiresforproperpressure.
CasterWheels 25psi.
DriveWheels 15psi.
4. Checkforloosehardware. Tightenasneeded.
5. Checkthesafetyswitchesforproperadjustment:
* Theenginewillcrank,butnotstartifthe
machineisnotinneutral.
* Onelectricstartmachines,theenginewillnot
crankifthePTOswitchison.
* Theengineshouldcrankandstartifthe
machineisinneutralandthePTOengagement
switchisOFF.
6. Applylubricantto allthegrease fittings.
Lubricant was applied at the factory. This is
just a precautionary check to make sure that
allthefittingshavebeenlubricated.
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.
* Fill the fuel tank with clean, fresh, lead-free
gasoline.
* Open the fuel valve on the bottom of the
fuel tank.
MOWER OPERATION
-NOTE-
Use gasoline with an octane rating no less than
87.
* The transmission must be in NEUTRAL.
* The blade clutch switch must be in the OFF
position.
* The operator's presence levers must be
released.
* The neutral latches must be in the neutral
lock position.
* The key switch must be on.
3. Start the engine:
* 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.
4. Engagethecutterbladesbypullingthebladeclutch
switchintotheONposition. Pushtheswitchtothe
OFFpositiontodisengagethecutterblades.
390S0138
PULL UP TO ENGAGE
PUSH DOWN TO DISENGAGE

5
-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 cutter blades come
up to speed. For best equipment life, engage the
clutch with the engine at 1/2 throttle, not under
full load.
To avoid serious bodily injury and damage to the
transmission, the machine must be at a full stop
before shifting between gears or shifting between
forward and reverse.
5. Shift the transmission into gear for 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
machinewill travelstraight. Tomakearightturn,
squeezetheRHlever. Toturnleft,squeezetheLH
lever.
8. TO STOP, squeeze both levers, lock the neutral
latches, and shift the transmission into neutral.
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
CUTTER DECK BELT ADJUSTMENTS
1. Removethebeltcover.
2. Adjustthecutterdeckdrivebeltusingabelttension
gauge. Adjustthebeltsothatthebeltmoves1/2"
with10poundsofpressure. Adjustthetensionby
tighteningorlooseningtheJ-boltnut. (Seefigure1)
-NOTE-
Due to initial belt stretch and to prevent the belt
from slipping, check this adjustment after the
first 2 hours, 4 hours and 8 hours of operation.
SC400G
BELT
WASHER
"J" BOLT
NUT
CUTTER DECK DRIVE BELT TENSION
ALIGNMENT IDLER - L.H.
END OF L-SHAPED
BRACKET
Figure 1
SC401G
WASHER
NUT
BELT
Figure 3. Cutter Deck Belts
BELT TENSION
ADJUSTMENT IDLER CUTTER DECK
ADJUSTMENT
IDLER
CHECK BLADE DRIVE
BELT TENSION HERE
SC402G
DISCHARGE
AREA
WARNING:
3. AdjusttheRHbladedrivebeltusingabelttension
gauge. Adjustthebeltsothatthebeltmoves1/2"
with10poundsofpressure. Adjustthetensionby
tighteningorlooseningtheJ-boltnut.(Seefigure2
& 3)
Figure 2. RH Blade Belt Adjustment

6
CUTTER DECK ADJUSTMENTS
Duetothemanycuttingconditionsthatexist,itisdifficult
tosuggestacutterdecksettingthatwillworkforevery
lawn.Therearetwoadjustmentsthatcanbemadeon
thesedecks,pitchandheight.
PITCHistheangleoftheblades(comparingfrontto
rear). A1/4"downwardpitch(frontofdeckdown)is
recommendedforbestcuttingperformance.
HEIGHTisthenominaldistancethebladeisoffofthe
ground. Thismeasurementismadewiththeblades
pointedsidetosideanddistanceismeasuredbetween
cuttingtipandground. (AlsoseeBladeHeightAdjust-
ment,nextpage)
Changestothecuttingheightcanbeachievedbyreposi-
tioningthecutterdeck(Thisadjustmentwillalsoeffect
thepitchofthedeck). Therearethreeavailableposi-
tions(seefigure5).
Figure 5. Cutting Height Adjustment
DRIVE CONTROL ADJUSTMENTS
1. Adjustthesteeringcontrolrodssothatthereis
approximately3/4"clearancefromthebottomof
therodtothebottomoftheneutrallatchslotwhen
inthedriveposition. (Seefigure4)
Figure 4. Steering Control Rod Adjustment
2. Adjustthesteeringbrakerodssothatthebrakes
donotapplyuntilthesteeringleversarepulledtight
tothehandles. Whenthesteeringleversare
lockedintheneutralpositionthemachineshould
movefreely.
SC404GB
NEUTRAL LOCK
POSITION
DRIVE POSITION
3/4"
STEERING
BRAKE LEVER
NEUTRAL
LATCH
SC405G
LOW CUT (1 3/4" to 3")
HIGH CUT
(3 1/4" to 4 1/2")
MID RANGE
(2 1/2" to 3 3/4")
CUTTER DECK HEIGHT ADJUSTMENT
TRANSMISSION DRIVE BELT
Adjustthetransmissiondrivebeltsothatthereisabouta
3/16"deflectionwith10lbs.ofpressure. Adjustby
looseningidlerpulleymountingboltandslidingtheidler
leftorrighttochangebelttension.