Scag Power Equipment SWZ User Manual
MODEL SWZ
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 03031
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.
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:
All SWZ machines
with a serial number of xxx70001 - xxx79999
Always use the entire serial number listed on the serial number
tag when referring to this product.
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 com-
plete 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 irreparable 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
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, 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.
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 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. Apply the parking brake to
prevent the mower from moving when you are
not in the operators position.
2
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, 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 "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, 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.
13. Do not pass or stand on the grass discharge side
of any mower with the engine running. Stop
operation when another person approaches.
WARNING
FALLING HAZARD
USE ONLY SCAG APPROVED
RIDING ATTACHMENTS
SEE OPERATOR'S MANUAL
481109
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.
3
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.
12. Make sure all hydraulic connections are tight and
all hydraulic hoses and lines are in good condition 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 APPROXIMATEL Y 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:
* 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.
-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 necessary.
4. Engage the cutter blades by lifting and pushing
the blade cluch switch into the ON position. Pull
the switch to the OFF position to disengage the
cutter blades.
* The engine should crank and start if the
machine is in neutral, the PTO engagement switch is OFF and the parking brake
is ON.
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.
-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.
4
WARNING:
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. 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.
CUTTER DECK BELT 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)
END OF L-SHAPED
NUT
BRACKET
"J" BOLT
WASHER
BELT
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.(see Figure 1). To operate
the machine the dump valve levers must be
returned to the closed positions.
CUTTER DECK DRIVE BELT TENSION
ALIGNMENT IDLER - L.H.
Figure 2 Deck Drive Belt Adjustment
-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
ire pressure can be adjusted for
moves 1/2" with 10 pounds of pressure. Adjust
the tension by tightening or loosening the J-bolt
nut. (See figure 3)
SC400G
Dump Valve Levers
(normal position)
Figure 1 Dump Valves
SGB112
5
Washer
Nut
Deck
"J" Bolt
Belt
Figure 3. Cutter Deck Belt Adjustment R.H.
LOW CUT (1 3/4"- 3")
MID RANGE
(2 1/2"- 3 3/4")
HIGH CUT (3 1/4"- 4 1/2")
4. Replace the belt cover.
CUTTER DECK ADJUSTMENTS
Due to the many cutting conditions that exist, it is
difficult to suggest a cutter deck setting that will
work for every lawn. There are two adjustments
that 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) is recommended for best cutting performance.
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 cutting tip and ground. (Also see Blade
Height Adjustment)
CUTTER DECK HEIGHT ADJUSTMENT
SC405G
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)
PIN
SPACERS
REPOSITIONING SPACERS
SC406G
Figure 5. Caster Wheel Spacers
Changes to the cutting height can be achieved by
repositioning the cutter deck. (This adjustment will
also effect the pitch of the deck). There are three
available positions (see figure 4).
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
spacers should be installed between the blade and the
spindle. (See figure 6)
6
ANGLE BLADE BACK
DO NOT CUT IN
X
X MUST NOT EXCEED
30
1/3 BLADE WIDTH
SC4O8G
Figure 7. Blade Sharpening
NEUTRAL ADJUSTMENT
1. Raise the drive wheels off the ground and block
the caster wheels.
2. Remove the speed control spring and the steering control rod from the machine. (See figure 8)
Steering Control
Rod
SC407G
Figure 6. Blade Spacers
CUTTER BLADES
Do not sharpen beyond 1/3 of the width of the blade.
(See figure 7)
-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.
Bolts
Spring
Handle
Bellcrank
SC160G
Figure 8 Neutral Adjustment
3. Loosen the wing nut and let the speed adjustment bearing lever fall away from the cam.
4. Start the engine and observe the drive wheels. If
the drive wheels are rotating, Loosen the bolts
on the neutral adjustment handle and move the
handle up or down until the wheels are in neutral. (See figure 8)
5. Tighten the bolts on the neutral adjustment
handle. When tightening the bolts, hold the
bellcrank to prevent it from moving and throwing off the neutral adjustment.
6. Turn the engine off.
7
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.
3. Tighten the bearing securing the speed adjustment bearing lever and repeat on the opposite
side.
4. With the machine on a flat level surface, start the
engine and place the speed adjustment lever into
the speed that will most often be used.
1. Connect the steering control rods into the steering control levers on the handle. Do not install
the hair pin at this time.
2. Turn the swivel joint on the steering control rods
until the swivel joint is centered in the slot in the
bellcrank.
3. Remove the steering control rods from the
machine. Install the speed control spring onto
the swivel joint. Reinstall the steering control
rods onto the machine and secure using the hair
pins.
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. Engage the neutral latch on both steering control
levers and move the speed adjustment lever into
the neutral position.
5. Squeeze the steering control levers and release
the neutral latch. Slowly release the steering
control levers allowing the machine to move
forward.
6. If the machine pulls to one side, put the speed
adjustment lever back into the neutral position
and turn the engine off.
7. On the side that the machine pulled toward,
loosen the wing nut securing the speed adjustment bearing lever and move the bearing 1/16"
away from the cam. Start the engine and recheck
the tracking. Adjust as needed.
8. If tracking cannot be achieved, contact your Scag
servicing dealer.
PARKING BRAKE
1. Adjust the parking brake so that when the brake
hand lever is against the stop on the handle bar,
the brake levers on the brake shaft weldment are
against the stops on the engine deck.
2. Position the speed adjustment lever so that the
bearing just contacts the speed adjustment cam.
(See figure 9)
Steering Control Rod
Swivel
Joint
Speed Control Spring
Speed Adjustment
Cam
Bearing
Speed
Adjustment
Bearing Lever
Bellcrank
SC161G
CAUTION:
Adjust the brake only enough to hold the
machine. Excessive force may cause damage
to the machine or brake components.
2. Adjust the brake actuator rod on either side of
the machine to obtain proper brake adjustment.
8
BREAK-IN
8 HOURS (DAILY)
40 HOURS (WEEKLY)
100 HOURS (BIWEEKLY)
500 HRS OR ANNUALLY
LUBRICATION & 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)
PROCEDURE
X
X
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 belt tension
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
Check all hardware for proper tightness
Change engine oil and filter at 5 hours
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
COMMENTS
9
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