Scag Power Equipment SWZ User manual

MODEL SWZ
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 03056

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:
SWZ36-14KA with a serial number of 4040001-4049999
SWZ36-15KH with a serial number of 4050001-4059999
SWZ48-14KA with a serial number of 4060001-4069999
SWZ48-15KH with a serial number of 4070001-4079999
SWZ48-17KA with a serial number of 4080001-4089999
SWZ-17KA with a serial number of 4100001-4109999
SWM-52E with a serial number of 4110001-4119999
SWM-61E with a serial number of 4120001-4129999
SWM-72E with a serial number of 4130001-4139999
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
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
WE SUPPORT OPE
TECHNICIAN
CERTIFICATION
Equipment & Engine
Training Council
c
MEMBER

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
SIGNAL WORDS
This symbol means “Attention! Become Alert!“Attention! Become Alert!
“Attention! Become Alert!“Attention! Become Alert!
“Attention! Become Alert!
Your Safety is Involved!"Your Safety is Involved!"
Your Safety is Involved!"Your Safety is Involved!"
Your Safety is Involved!" The symbol is used
with the following signal words to attract your
attention to safety messages found on the decals 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:Signal Word:
Signal Word:Signal Word:
Signal Word:
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
machine that 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, the prolonged life and maxi-
mum efficiency of your mower depends on you
following the operating, maintenance and adjust-
ment instructions in this manual.
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
complete model and serial number of your Scag
product.
USE OF OTHER THAN ORIGINAL SCAGUSE OF OTHER THAN ORIGINAL SCAG
USE OF OTHER THAN ORIGINAL SCAGUSE OF OTHER THAN ORIGINAL SCAG
USE OF OTHER THAN ORIGINAL SCAG
REPLACEMENT PARTS WILL VOID THEREPLACEMENT PARTS WILL VOID THE
REPLACEMENT PARTS WILL VOID THEREPLACEMENT PARTS WILL VOID THE
REPLACEMENT PARTS WILL VOID THE
WARRANTY.WARRANTY.
WARRANTY.WARRANTY.
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.
GENERAL SAFETY INSTRUCTIONS
READ THIS OPERATOR'S MANUAL and
instructions furnished with attachments.
Perform only those maintenance procedures de-
scribed in this manual. If major repairs are ever
needed or assistance is desired, contact an Author-
ized Scag 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-
cantly upon your knowledge and understanding of
all correct operating practices and procedures of this
machine.
WARNING:
CAUTION:

2
BEFORE OPERATING
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 proper instruction.
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
safe operating condition.
5. Do not operate the machine while wearing
sandals, 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 regula-
tions.
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. Do not smoke 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. 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.
WHILE OPERAWHILE OPERA
WHILE OPERAWHILE OPERA
WHILE OPERATINGTING
TINGTING
TING
1. Start the engine when the neutral latches are in
the neutral lock position, the cutter blades are
disengaged, 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
adequate ventilation. Exhaust fumes are hazard-
ous and could possibly be deadly.
3. Using the machine demands attention. 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, or other hazard.
D. Reduce speed when making sharp turns and
when turning on 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 discharge area should plug, shut the engine
off and wait for all movement to stop before
removing the obstruction.
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 catcher container.
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
prevent the mower from moving when you are
not in the operator’s position.

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.
9. Ifthecuttingbladesshouldstrikeasolidobjector
theequipmentshouldstarttovibrateabnormally,
stoptheengine,disconnectthesparkplugwire,and
check immediatelyforthecause. Vibrationis
generallyawarningoftrouble.Checkthemachine
fordamagedordefectiveparts. Repairanydamage
beforestartingtheengineoroperatingthecutter
deck. Besurethebladesareingoodconditionand
thebladeboltsaretight.
10. Reduce speed and exercise extreme caution on
slopes and in sharp turns to prevent tipping or
loss of control. Be especially cautious when
changing directions on slopes.
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
the mower unattended, move the speed adjust-
ment lever into the neutral position, place the
neutral latches in the neutral lock position, apply
the parking brake, and move the blade engage-
ment switch to OFF. Shut the engine OFF and
remove the key.
14. Use only Scag approved riding attachments.
Scag Approved Riding Attachments:
RS-ZT
Using unapproved attachments, (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 condi-
tion by keeping nuts, bolts, and screws tight.
Check the blade mounting bolts and nuts fre-
quently to be sure they are tightened.
5. If the engine must be running to perform a
maintenance adjustment, keep hands, feet,
clothing 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:
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
contains 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.
12. Make sure all hydraulic connections are tight and
all hydraulic hoses and lines are in good condi-
tion before starting the machine.
13. Hydraulic fluid is under high pressure. If you
need service on your hydraulic system, please
see your authorized Scag dealer.
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 and the speed
control for neutral adjustment. (See Adjust
ments, page 6-8)
3. Check the tires for proper pressure.
Caster Wheels 25 psi.
Drive Wheels 15 psi.
4. Check for loose hardware. Tighten as needed.
5. Check the safety switches for proper adjustment:
* The engine should crank and start if the
machine is in neutral, the PTO engage-
ment switch is OFF and the parking brake
is ON.
6. Apply lubricant to all the grease fittings. Lubri-
cant was applied at the factory. This is just a
precautionary check to make sure that all the
fittings have been lubricated.
MOWER OPERATION
-NOTE-
Use gasoline with an octane rating no less than
87.
* 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.
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 neces-
sary.
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.
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
hydraulic reservoir.
* Fill the fuel tank with clean, fresh, lead-
free gasoline.
* Open the fuel valve on the bottom of the
fuel tank.
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 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 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. Whilesqueezingthesteeringbrakeleverswithboth
hands,releasebothneutrallatches.
7. When the steering brake levers are released, the
machinewilltravelstraight.Tomakearightturn,
squeezetheRHlever. Toturnleft,squeezetheLH
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.
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(seeFigure1).Tooperatethe
machine,thedumpvalveleversmustbereturnedto
theclosedpositions.
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:
Dump Valve Levers
(normal position)
SGB112
Figure 1. Dump Valves
CUTTER DECK BELCUTTER DECK BEL
CUTTER DECK BELCUTTER DECK BEL
CUTTER DECK BELT ADJUSTMENTST ADJUSTMENTS
T ADJUSTMENTST ADJUSTMENTS
T ADJUSTMENTS
-NOTE-
The hydro drive belt is spring loaded and does
not require adjustment.
1. Remove the belt cover.
2. Adjust the cutter deck drive belt using a belt
tension gauge. Adjust the belt so that the belt
moves 1/2" with 10 pounds of pressure. Adjust
the tension by tightening or loosening the J-bolt
nut. (See figure 2)
SC400G
BELT
WASHER
"J" BOLT
NUT
CUTTER DECK DRIVE BELT TENSION
ALIGNMENT IDLER - L.H.
END OF L-SHAPED
BRACKET
Figure 2. Deck Drive Belt Adjustment

6
-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.
3.Adjust the RH blade drive belt using a belt
tension gauge. Adjust the belt so that the belt
moves 1/2" with 10 pounds of pressure. Adjust
thetensionbytighteningorlooseningtheJ-boltnut
(Seefigure3).
4. Replace the belt cover.
"J" Bolt
Nut
Belt
Deck
Washer
Figure 3. Cutter Deck Belt Adjustment R.H.
SC405G
LOW CUT (1 3/4"- 3")
HIGH CUT (3 1/4"- 4 1/2")
MID RANGE
(2 1/2"- 3 3/4")
CUTTER DECK HEIGHT ADJUSTMENT
Figure 4. Cutting Height Adjustment
Caster spacers also can be repositioned to change
cutting heights and to change the pitch of the deck.
(See figure 5)
Figure 5. Caster Wheel Spacers
BLADE HEIGHT ADJUSTMENTBLADE HEIGHT ADJUSTMENT
BLADE HEIGHT ADJUSTMENTBLADE HEIGHT ADJUSTMENT
BLADE HEIGHT ADJUSTMENT
Adjusting the blade height can be done by moving
any number of the five smaller 1/4" spacers on the
blade mounting bolts to the top of the spindle shaft
or below the spindle shaft.
-NOTE-
All blades should be positioned equally.
For best cut and discharge, a minimum of three
spacersshouldbeinstalledbetweenthebladeandthe
spindle(Seefigure6).
SC406G99
PIN SPACERS
REPOSITIONING SPACERS
CUTTER DECK ADJUSTMENTS
Duetothemany cuttingconditionsthatexist, itis
difficult to suggest a cutter deck setting that will
workforeverylawn. Therearetwoadjustmentsthat
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)
isrecommendedforbestcuttingperformance.
HEIGHT is the nominal distance the blade is off of
theground. Thismeasurementismadewiththe
blades pointed side to side and distance is measured
between cutting tip and ground. (Also see Blade
HeightAdjustment)
Changestothecuttingheightcanbeachievedby
repositioning the cutter deck. (This adjustment will
also effect the pitch of the deck). There are three
available positions (see figure 4).