Scag SWU User Manual
MODEL SWU
OPERATOR’S MANUAL
THIS MANUAL CONTAINS THE OPERATING
INSTRUCTIONS AND SAFETY INFORMATION FOR YOUR SCAG MOWER. READING
THIS MANUAL CAN PROVIDE YOU WITH
ASSISTANCE IN MAINTENANCE AND ADJUSTMENT PROCEDURES TO KEEP YOUR
MOWER PERFORMING TO MAXIMUM EFFICIENCY. THE SPECIFIC MODELS THAT THIS
BOOK COVERS ARE CONTAINED ON THE
INSIDE COVER. BEFORE OPERATING YOUR
MACHINE, PLEASE READ ALL THE INFORMATION ENCLOSED.
PART NUMBER 03085
WARNING:
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:
SWU36A-15KA with a serial number of 6190001 to 6199999
SWU48A-17KA with a serial number of 6200001 to 6209999
SWU52A-17KA with a serial number of 6210001 to 6219999
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
Symbols....................................................................................................... 2-3
Before Operating ......................................................................................... 4
While Operating........................................................................................... 4-5
Maintenance and Storage ........................................................................... 5-6
Initial Run-In Procedures ............................................................................. 6
Mower Operation ......................................................................................... 6-7
Cutter Deck Belt Adjustments...................................................................... 7
Transmission Drive Belt............................................................................... 7
Drive Control Adjustments........................................................................... 7
"Adjust-A-Grip" Settings .............................................................................. 7-8
Adjusting Cutting Height.............................................................................. 8
Cutter Blades............................................................................................... 8
Lubrication and Maintenance Chart ............................................................ 9
Troubleshooting Cutting Conditions ............................................................ 10-12
Technical Specifications .............................................................................. 13-14
Limited Warranty Statement......................................................Inside Back Cover
MEMBER
Equipment & Engine
Training Council
WE SUPPORT OPE
TECHNICIAN
CERTIFICATION
I
TABLE OF CONTENTS
(CONTINUED)
SUBJECT PAGE
Illustrated Parts List
Notes ................................................................................................ 15
SWMU - 36" Cutter Deck .................................................................. 16-17
SWMU - 48" & 52" Cutter Deck ........................................................ 18-19
Deck Frame - 36" .............................................................................. 20-21
Deck Frame - 48" & 52"..................................................................... 22-23
Engine Deck ..................................................................................... 24-25
Handle Assembly ............................................................................. 26-27
Instrument Panel ............................................................................... 28
Peerless Transmission...................................................................... 29
Wire Harness - Handle ..................................................................... 30
Wire Harness - Engine Deck ............................................................ 31
Wire Harness Adapter - Kawasaki.................................................... 31
Replacement Decals ........................................................................ 32-34
Limited Warranty Statement............................................Inside Back Cover
II
INTRODUCTION
Your mower was built to the highest standards in the
industry. However, the prolonged life and maximum
efficiency of your mower depends on you following
the operating, maintenance and adjustment instructions in this manual.
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 SCAG
REPLACEMENT PARTS WILL VOID THE
WARRANTY.
SIGNAL WORDS
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 throughout this manual that alerts the viewer to the existence
and relative degree of the hazard.
The Right and Left, Front and Rear of the
machine are referenced from the operators perspective 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 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 parts
and accessories.
Your safety and the safety of others depends
significantly upon your knowledge and
understanding of all correct operating practices and
procedures of this machine.
The signal word DANGER denotes that an extremely hazardous situation exists on or near the
machine that could result in high probability of death
or irrepairable injury if proper precautions are not
taken.
WARNING:
The signal word WARNING denotes that a hazard
exists on or near the machine that can result in injury
or death if proper precautions are not taken.
CAUTION:
The signal word CAUTION is a reminder of safety
practices on or near the machine that could result in
personal injury if proper precautions are not taken.
1
ISO Symbols
CE Mark
SYMBOL DESCRIPTION
Parking Brake
On/Start
SYMBOL DESCRIPTION
TransmissionChoke
Spinning Blade
48071S
Spring Tension on Idler
Off/Stop
Oil
WARNING
Falling Hazard
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
2
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
SlowFast
481039S
Continuously variable - Linear
Pinch Point
Hourmeter/elapsed operating hours
Cutting element - Basic symbol
Cutting element - Engage
Cutting element - Disengage
Keep bystanders away
Read operator's manual
3
BEFORE OPERATING
WHILE 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 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, shift the
transmission into neutral, move the blade engagement switch to the OFF position, and move the
neutral latches to neutral.
1. Start the engine when the neutral latches are in the
neutral lock position, the cutter blades are disengaged, and the transmission is in neutral.
2. Do not run the engine in a confined area without
adequate ventilation. Exhaust fumes are hazardous 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.
4
9. If the cutting blades should strike a solid object
or the equipment should start to vibrate abnormally, stop the engine, disconnect the spark plug
wire, and check immediately for the cause.
Vibration is generally a warning of trouble.
Check the machine for damaged or defective
parts. Repair any damage before starting the
engine or operating the cutter deck. Be sure the
blades are in good condition and the blade bolts
are tight.
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.
WARNING:
DO NOT operate on steep slopes. To check a
slope, attempt to back up it (with the cutter deck
down). If the machine can back up the slope
without the wheels slipping, reduce speed and
use extreme caution. ALWAYS FOLLOW OSHA
APPROVED OPERATION.
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 operators position or leaving
the mower unattended, shift the transmission into
neutral, place the neutral latches in the neutral
lock position, and move the blade engagement
switch to OFF. Shut the engine OFF and remove
the key.
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
Using unapproved attachments, (especially "standup" 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 maintenance or adjustment, remove the battery if it has
one, 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
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 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 governor 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.
WARNING
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
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.
5
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.
MOWER OPERATION
1. Read and understand the safety instructions
before attempting to operate this machine.
2. Before starting the engine:
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
DA Y OF USE OR APPROXIMA TEL Y 10
HOURS)
1. Check the belts for proper tension at 2, 4 and 8
hours. Check for abnormal wear and adjust as
needed.
2. Check the steering control rods for neutral
adjustment. (See Adjustments, page 7)
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 will crank, but not start if the
machine is not in neutral.
* On electric start machines, the engine will
not crank if the PTO switch is on.
* The engine should crank and start if the
machine is in neutral and the PTO
engagement switch is OFF.
6. Apply lubricant to all the grease fittings.
Lubricant was applied at the factory. This is
just a precautionary check to make sure that
all the fittings have been lubricated properly.
* 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.
-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. 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.
PULL UP TO ENGAGE
PUSH DOWN TO DISENGAGE
390S0138
6
-NOTE-
When the 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.
TRANSMISSION DRIVE BELT
The transmission drive belt on the SWU belt drive machine
has a spring-loaded idler system and needs no adjustment.
If you find that the transmission slips, see your local Scag
Servicing Dealer for service.
DRIVE CONTROL ADJUSTMENTS
WARNING:
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
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 shift the transmission into neutral.
1. Adjust the steering control rods so that there is
approximately 3/4" clearance from the bottom of
the rod to the bottom of the neutral latch slot when
in the drive position. (See Figure 1)
NEUTRAL
LATCH
NEUTRAL LOCK
POSITION
DRIVE POSITION
3/4"
STEERING
BRAKE LEVER
SC404GB
Figure 1. Steering Control Rod Adjustment
2. Adjust the steering brake rods so that the brakes do
not apply until the steering levers are pulled tight to
the handles. When the steering levers are locked in
the neutral position the machine should move freely.
CUTTER DECK BEL T ADJUSTMENTS
Due to a spring-loaded idler system, there is no adjustment necessary for the cutter deck belts. The 36" cutter
deck has one spring-loaded idler. The 48" cutter deck
has two spring loaded idlers.
"ADJUST-A-GRIP SETTINGS"
"Adjust-A-Grip," with three settings, allows hand force
adjustment in the field, with no tools required. To
operate the "Adjust-A-Grip", pull back on the handle
and move the lever up or down depending on the
amount of belt force needed (See Figure 2, page 8).
7
SWU99AG
Figure 2. "Adjust-A-Grip"
Cutting conditions will determine what setting is needed
for the Adjust-A-Grip" and your machine. If the drive
belts slip due to high moisture conditions, the tension may
need to be increased. On the other hand, if the day is
dry and you are cutting on flat terrain the tension may be
decreased. To change the settings:
3. Using the deck handles, 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 other side of the
cutter deck.
Lift deck with
handles only
1. Pull back and move the lever up to reduce tension
on the drive belt.
2. Pull back and move the lever down to increase
tension on the drive belt.
ADJUSTING CUTTING HEIGHT
The mower deck can be adjusted from a height of
1-inch to 4-1/2 inches at 1/2-inch intervals. To adjust the
cutting height:
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. Lift cutter deck by the handles
only . Do not reach under the cutter deck to lift it.
1. Shut off the engine and remove the ignition key.
Remove Hair Pins
2K SWU DHA
Figure 3. Cutting Height Adjustment
CUTTER BLADES
Do not sharpen beyond 1/3 of the width of the blade.
(See Figure 3)
-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,
vibration 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.
ANGLE BLADE BACK
DO NOT CUT IN
2. Remove the two hairpins from the adjusting pins on
one side of the cutter deck (Figure 3).
X
X MUST NOT EXCEED
30
1/3 BLADE WIDTH
SC4O8G
Figure 4. Blade Sharpening
8
Loading...