Scag Power Equipment SWZU User manual

MODEL SWZU
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. THE SPECIFIC MODELS THAT THIS
BOOK COVERS ARE CONTAINED ON THE
INSIDE COVER. BEFORE OPERATING YOUR
MACHINE, PLEASE READ ALL THE INFOR-
MATION ENCLOSED.
PART NUMBER 03101

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.
This manual covers the operating instructions
and illustrated parts list for:
SWZU36A-15KA with seri l number of 7400001 to 7409999
SWZU48A-17KA with seri l number of 7410001 to 7419999
SWZU52A-17KA with seri l number of 7420001 to 7429999
SWZU-21KAE with seri l number of 7470001 to 7479999
SWMU-52A with seri l number of 7480001 to 7489999
SWMU-61A with seri l number of 7490001 to 7499999
Always use the entire serial number listed on the serial number
tag when referring to this product.
WARNING:

TABLE OF CONTENTS
SUBJECT PAGE
Introduction.................................................................................................. 1
General Safety Instructions.......................................................................... 1
Signal Words ............................................................................................... 1
Symbols....................................................................................................... 2-3
Before Operating ......................................................................................... 4
While Operating........................................................................................... 4
Maintenance and Storage ........................................................................... 5
Initial Run-In Procedures ............................................................................. 6
Mower Operation ......................................................................................... 6
Cutter Deck Belt Adjustments...................................................................... 7
Cutter Deck Adjustments ............................................................................. 8
Blade Height Adjustments ........................................................................... 8
Cutter Blades............................................................................................... 9
Neutral Adjustment ...................................................................................... 9
Steering Control Rod Adjustment ................................................................ 10
Tracking Adjustment .................................................................................... 10
Parking Brake .............................................................................................. 10
Lubrication and Maintenance Chart ............................................................ 11
Troubleshooting Cutting Conditions ............................................................ 12-14
Technical Specifications.............................................................................. 15-16
Notes..........................................................................................................................17
I
WE SUPPORT OPE
TECHNICIAN
CERTIFICATION

TABLE OF CONTENTS
(CONTINUED)
SUBJECT PAGE
Illustrated Parts List
SWMU-36"A Cutter Deck.................................................................. 18-19
SWMU-48"A,52"A &61"ACutterDecks.................................................20-21
CutterDeckFrame36"...............................................................................22-23
CutterDeckFrame48"&52"SmallFrame.............................................24-25
Cutter Deck Frame 52" & 61" Large Frame ....................................... 26-27
EngineDeck................................................................................................ 28-29
DriveAndBrakeComponents.................................................................. 30-31
HandleAssembly........................................................................................ 32-33
Hydraulic Assembly.......................................................................... 34-35
Hydraulic Pump Assembly................................................................ 36-37
EngineDeckWireHarness- 15KA & 17KA......................................... 38
HandleWireHarness -ManualStart...................................................... 38
EngineDeckWire Harness-21HP KA Electric Start............................. 39
HandleWireHarness-21HPKAElectric Start....................................... 39
ReplacementDecals.................................................................................. 40-41
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
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:
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 ha ard.
The signal word DANGER denotes that an ex-
tremely ha ardous 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 ha ard
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 maximum
efficiency of your mower depends on you following
the operating, maintenance and adjustment instruc-
tions 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 com-
plete model and serial number of your Scag product.
USE O OTHER THAN ORIGINAL SCAG
REPLACEMENT PARTS WILL VOID THE
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
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-
i ed 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
CE Mark
TransmissionChoke
On/Start Spring Tension on Idler
Oil
Off/Stop
SYMBOL DESCRIPTION
SYMBOL DESCRIPTION
ISO Symbols
Spinning Blade
48071S
Parking Brake
WARNING
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
Falling Hazard

3
SlowFast
C tting element - Engage
C tting element - Basic symbol
C tting element - Disengage
Contin o sly variable - Linear
Read operator's man al
Keep bystanders away
Pinch Point
481039S
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
Ho rmeter/elapsed operating ho rs

4
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
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 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. 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.
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
adequate ventilation. Exhaust fumes are ha ard-
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 ha ards.
C. Do not drive close to a drop-off, ditch, creek
bank, or other ha ard.
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 remov-
ing 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.

5
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. If the cutting blades should strike a solid object
or the equipment should start to vibrate abnor-
mally, 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.
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
useextremecaution. ALWAYSFOLLOW OSHA
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 adjustment
lever into the neutral position, place the neutral
latches in the neutral lock position, apply the
parking brake, and move the blade engagement
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 ha ardous.
MAINTENANCEAND 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 ha ard, keep the engine
free of excessive grease, grass, leaves and
accumulations 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 mainte-
nance 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 authori ed 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

6
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.
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 authori ed Scag dealer.
INITIAL RUN-IN PROCEDURES (FIRST
DAY OF USE ORAPPROXIMATELY 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. Check the safety switches for proper adjustment:
* The engine should crank and start if the
machine is in neutral, the PTO engagement
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
precautionary check to make sure that all the
fittings have been lubricated.
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.
* The key switch must be on.
* The parking brake must be on.
* Engage the cold start declutch if needed.
3. Start the engine:
* Choke as required. If the engine is cold, pull
the choke knob out on the 15HP, 17HP &
21HP Kawasaki engines. 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. To properly b rnish the electric PTO cl tch brake,
follow the following steps.
A. Start and run the engine at approximately
3/4 throttle.
B. Engage and disengage the PTO
approximately 25 times, waiting for 10
seconds between each on/off cycle.
MOWEROPERATION
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