* 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:
All MAG Machines
with a serial number of 27870001- 27879999
Always use the entire serial number listed on the serial number
tag when referring to this product.
Section 1
GENERAL INFORMATION
1.1 INTRODUCTION
Your mower was built to highest standards in the industry.
However, the prolonged life and maximum efficiency of
your mower depend on you following the operating,
maintenance and adjustment instructions in this manual.
If additional information or service is needed, contact your
Scag Power Equipment Dealer.
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.
USE OF OTHER THAN ORIGINAL SCAG
REPLACEMENT PARTS WILL VOID THE
WARRANTY.
When ordering parts, always give the model and serial
number of your tractor and cutting deck. The serial plates
are located where shown in Figure 1-1.
For pictorial clarity, some illustrations and Figures in this
manual may show shields, guards or plates open or removed.
Under no circumstances should your mower be operated
without these devices in place.
All information is based upon product information available
at time of approval for printing. Scag Power Equipment
reserves the right to make changes at any time
without notice and without incurring any obligation.
1.2 DIRECTION REFERENCE
The Right and Left, Front and Rear of the machine
are referenced from the operators right and left when seated
in the normal operating position and facing the
forward travel direction.
1.3 SERVICING THE ENGINE AND DRIVE
TRAIN COMPONENTS
The detail servicing and repair of the engine, hydraulic pump
and motors and gear boxes are not covered in this manual;
only routine maintenance and general service instructions
are provided. For service of these components during the
limited warranty period, it is important to contact your Scag
dealer or find a local authorized servicing agent of the
component manufacturer. Any unauthorized work done on
these components during the warranty period may void your
warranty.
Tractor Serial Number
Plate Location
Figure 1-1 Serial Plate Locations
Cutter Deck
Serial Number
Plate Location
1
SAFETY INFORMATION
2.1 INTRODUCTION
Your mower is only as safe as the operator. Carelessness or
operator error may result in serious bodily injury or death.
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. Make sure every
operator is properly trained and thoroughly familiar with
all the controls before operating the mower.
Section 2
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:
READ THIS OPERATORS MANUAL BEFORE
ATTEMPTING TO START YOUR MOWER.
A replacement manual is available from your authorized
Scag Service Dealer or by Contacting Scag Power
Equipment, Service Department at P.O. Box 152, Mayville,
WI 53050. There is nominal charge of $2.00 for each
manual. Please indicate the complete model and serial
number of your Scag product.
2.2 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 signal word WARNING denotes 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.
Your safety and the safety of others depend significantly
upon your knowledge and understanding of all correct
operating practices and procedures of this machine.
2.3 BEFORE OPERA TION
CONSIDERATIONS
1. NEVER allow children to operate this riding
mower. Do not allow adults to operate this machine
without proper instructions.
2. DO NOT mow when children and/or others are
present.
3. Clear the area to be mowed of objects that could be
picked up and thrown by the cutter blades.
4. DO NOT carry passengers.
5. DO NOT wear loose fitting clothing that could get
caught in moving parts. Do not operate the machine
wearing shorts; always wear adequate protective
clothing including long pants. Wearing safety glasses,
safety shoes and a helmet is advisable and is required
by some local ordinances and insurance regulations.
2
Section 2
6. Prolonged exposure to loud noise can cause hearing
impairment or loss. Operator hearing protection is
recommended, particularly for continuous operation of
the mower. Wear suitable hearing protection.
7. Keep the machine and attachments in good operating
condition. Keep all shields and safety devices in place.
If a shield, safety device or decal is defective or
damaged, repair or replace it before operating the
machine.
WARNING:
This machine is equipped with an interlock
system intended to protect the operator and
others from injury. This is accomplished by
preventing the engine from starting unless the
parking brake is applied and the blades are
disengaged. The system also shuts off the
engine if the operator removes his foot from
the interlock pedal with the mower running and
the parking brake not engaged. Never operate
equipment with the interlock system disconnected or malfunctioning.
2.4 OPERATION CONSIDERATIONS
1. Know the function of all controls and how to stop
quickly.
2. 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 drive up it (with cutter deck down). If
machine can drive up the slope without the wheels
slipping, reduce speed and use extreme caution.
ALWAYS FOLLOW OSHA APPROVED OPERATION.
3. Do not stop or start suddenly. WHEN GOING
UPHILL OR DOWN HILL, MOW UP AND
DOWN THE FACE OF SLOPES, NEVER
ACROSS THE FACE.
8. Be sure interlock switches are functioning correctly
.
9. Fuel is flammable; handle with care.
10.Equipment must comply with the latest requirements
per ANSI J137 and/or ANSI S279 when driven on
public roads.
11.DO NOT operate without a chute deflector installed;
keep the deflector in lowest possible position.
12.Check the blade mounting bolts at frequent intervals
for proper tightness.
13.Make sure all hydraulic fluid connections are tight and
all hydraulic hoses and lines are in good condition
before starting the machine.
4. When using any attachment, never direct the discharge
of material toward bystanders nor allow anyone near
the machine while in operation.
5. Before attempting to start the engine, disengage power
to all attachments and engage the parking brake. DONOT depress the right foot pedal.
6. If the mower discharge ever plugs, shut off the engine,
remove the ignition key, and wait for all movement to
stop before removing the obstruction.
7. Be alert for holes, rocks, and roots in the terrain and
other hidden hazards. Keep away from any drop off.
Beware of overhead obstructions (low limbs, etc.),
underground obstacles (sprinklers, pipes, tree roots,
etc.). Cautiously enter a new area. Be alert for hidden
hazards.
8. Disengage power to mower before backing up. Do not
mow in reverse unless absolutely necessary and then
only after observation of the entire area behind the
mower.
3
Section 2
9. DO NOT turn sharply. Use care when backing up.
10.Use counterweights or wheel weights when suggested
in this manual.
11.Watch for traffic when crossing roads or operating
near roadways
.
12.Mow only in daylight or good artificial light.
13.Take all possible precautions when leaving the machine unattended, such as disengaging the mower,
lowering the attachments, setting the parking brake,
stopping the engine, and removing the key.
14.Disengage power to the attachments when transporting or when not in use.
15.The machine and attachments should be stopped and
inspected for damage after striking a foreign object,
and damage should be repaired before restarting and
operating the machine.
16.DO NOT touch the engine or the muffler while the
engine is running or immediately after stopping. These
areas may be hot enough to cause a burn.
2.5 MAINTENANCE CONSIDERATIONS
1. Never make adjustments to the machine with the
engine running unless specifically instructed to do so.
If the engine is running, keep hands, feet, and clothing
away from moving parts.
2. Remove the key from the ignition switch to prevent
accidental starting of the engine when servicing or
adjusting the machine.
3. Keep all nuts, bolts and screws tight to ensure the
machine is in safe working condition. Check blade
mounting bolts frequently to be sure they are tight.
4. Do not change the engine governor settings or
overspeed the engine.
5. To reduce fire hazard, keep the engine free of grass,
leaves, excessive grease and dirt.
6. Hydraulic fluid is under high pressure. Keep body
and hands away from pin holes or nozzles that eject
hydraulic fluid under high pressure. Use only cardboard or paper to search for leaks.
7. Hydraulic fluid under high pressure may have sufficient force to penetrate skin and cause serious injury.
If hydraulic fluid is injected into the skin it must be
surgically removed within a few hours by a doctor or
gangrene may result.
4
Section 2
2.6 SAFETY AND INSTRUCTIONAL DECALS
DANGER
SPINNING BLADE
KEEP CLEAR
CONTACT CAN INJURE
48071
WARNING
ROTATING BLADES AND BELTS
KEEP HANDS, FEET & CLOTHING CLEAR
KEEP ALL GUARDS IN PLACE
SHUT OFF ENGINE & DISENGAGE BLADE
CLUTCH BEFORE SERVICING
CLEAR AREA OF DEBRIS BEFORE MOWING
USE CAUTION IN DIRECTING DISCHARGE
KEEP BYSTANDERS, CHILDREN & PETS AWAY
READ INSTRUCTION MANUAL BEFORE OPERATING
DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING
KIT, OR ENTIRE GRASS CATCHER INSTALLED
481040
WARNING
INSTALL BELT COVER BEFORE
OPERATING MACHINE
READ OPERATOR'S MANUAL
481039
5
Section 3
3.1 ENGINE
SPECIFICATIONS
General Type ............................................................................. Heavy Duty Industrial/Commercial Diesel
Brand ......................................................................................... Kubota 28 HP Super 5 Series, Electric Start
Model ......................................................................................... D1105-B
Horsepower ................................................................................ SAE Gross Intermittent, 28 HP @ 3000 RPM
Type ........................................................................................... Horizontal Shaft, Water Cooled, 4-Cycle Diesel
Displacement ............................................................................. 1123 cc.
Oil Type ..................................................................................... API Sandard, CD Grade or Better
Oil Filter .................................................................................... Full Flow Oil Filter Cartridge
Oil Capacity ............................................................................... 4 Quarts With Filter
CoolingPressurized, Sealed Cooling System, 170° F Thermostat, Blade
Fan, Cooling Capacity 8 Quarts
Belts:
Alternator .............................................................................. See Engine Manual for Part Number
Fan......................................................................................... Scag Part Number - 481114
Electric Clutch ...................................................................... Scag Part Number - 481104
Hydraulic Pump .................................................................... Scag Part Number - 481103
3.2 ELECTRICAL
Battery ....................................................................................... 12 Volt
Charging System ....................................................................... Alternator
Charging Output ....................................................................... 12 Volt, 30 Amp
System Polarity .......................................................................... Negative Ground
Starter ........................................................................................ 12 Volt Electric Ring Gear Type, Key and Solenoid Operated
Interlock Switches ..................................................................... Left Foot Pedal, Blade Brake, and Parking Brake
Fuses .......................................................................................... Two (2) 30 Amp
3.3 TRACTOR
Drive Motors ............................................................................. 12 Cu. In. Cast Iron High Torque Motors
Steering ...................................................................................... Chain and Sprocket
Forward and Reverse Control ................................................... Pedal Operated Linkage Connected To The Hydraulic Pump
Parking Brake ............................................................................ Lever Actuated Linkage to Drum Brakes on Both Drive Wheel
Assemblies
Wheels:
(2) Front Caster .................................................................... 12 x 3.5
Seat ............................................................................................ Milsco Seat With Adjustment Lever For Forward and Back
Do not attempt to drive this mower unless you
have read this manual. Learn the location and
purpose of all controls and instruments before
you operate this mower.
4.1 CONTROLS AND INSTRUMENT
IDENTIFICATION
Before operating the mower, familiarize yourself with all
mower and engine controls. Knowing the location, function
and operation of these controls is important for safe and
efficient operation of the mower.
A. Instrument Panel (See Figure 4-1)
1. Ignition Switch: The ignition switch is used to start
and stop the engine and has four positions; PREHEAT,
OFF, ON, and START. Rotate the key to the PREHEAT position to energize the glow plug. Hold the
key at the PREHEAT position until the yellow indicator light for the glow plug turns off, then release and
rotate the key to the START position.
Section 4
Do not hold the key in the START position longer than
15 seconds. If the engine does not start, return the key
to the OFF position for at least 60 seconds before a
restart attempt is made. Prolonged cranking can
damage the starter motor and shorten battery life.
Release the key when the engine starts and it will
automatically return to the run position. To stop the
engine, rotate the key counter-clockwise to the OFF
position.
2. Glow Plug Indicator Light: Yellow indicator turns
off when glow plugs have been properly energized
after the ignition switch is turned and held in the
PREHEAT position.
3. Hourmeter: Indicates the number of hours the engine
has been operated. It operates whenever the ignition
key is in the ON position. Can be used to keep track
of maintenance intervals and the amount of time
required to perform various tasks.
4. Voltmeter: Indicates the battery condition and charge
level.
7
Engine
Oil Pressure
Switch
Blade
Brake
Control
Lever
6
Hourmeter
Temperature Gauge
Mower
Deck Lift
Switch
Figure 4-1 Instrument Panel
5
Mower
Deck Height
Switch
8
6
Fuel Gauge
Voltmeter
9
4
Ignition
Switch
1
Throttle
Lever
Fuse
Holders
Glow Plug
Indicator
Light
10
2
8
Section 4
INTERLOCK
PEDAL
5. Temperature Gauge: Indicates engine coolant
temperatures. Green zone indicates proper working
temperature. Red zone indicates engine over heating
and the engine should be shut off immediately.
6. Fuel Gauge: Indicates the amount of fuel in the fuel
tank.
7. Engine Oil Pressure Indicator Light: Indicator will
light if oil pressure drops below a safe operating
pressure. Stop the engine immediately; determine the
cause and correct the problem before continuing
operation.
8. Mower Deck Lift Switch: This switch raises and
lowers the deck for road travel, etc. Pushing the
switch forward tilts the mower deck back. Pulling the
switch back tilts the deck forward.
Parking Brake
Lever
Forward/Reverse
Foot Pedal
Figure 4-2
C. Foot Pedals
9. Mower Deck Height Switch: This switch raises and
lowers the cutting height of the mower deck. An
indicator is located above the deck that gives the
cutting height setting. Pushing the switch forward
raises the deck cutting height. Pulling the switch back
lowers the deck cutting height.
10.Fuse Holders: Two 30 amp fuses protect the
mowers electrical system. To replace fuses, pull fuse
out of socket and install new fuse.
B. Levers
1. Blade Brake Control Lever (Figure 4-1): Used to
engage and disengage the mower blade brake. Pulling
the lever down and to the right engages the brake and
stops the blades from rotating. Pushing the lever up
and to the left disengages the brake, allowing blades to
rotate.
2. Throttle Lever (Figure 4-1): Regulates engine speed.
Push the lever forward to increase or pull the lever
backwards to decrease the engine speed.
3. Parking Brake Lever (Figure 4-2): Used to engage
and disengage the parking brakes. Pull the lever
backwards to engage the parking brake. Push the
lever forward to disengage the parking brake.
1. Forward/Reverse Foot Pedal (Figure 4-2): Used to
select the travel direction of the mower. Pressing the
pedal forward moves the mower in the forward
direction. Pressing the pedal backwards moves the
mower in the backward (reverse) direction.
2. Interlock Switch Pedal (Figure 4-3): Stops the
mower when operator's left foot in raised off the pedal.
Figure 4-3 Interlock Pedal
9
Section 4
4.2 SAFETY INTERLOCK SYSTEM
This mower is equipped with a safety system that prevents
the engine from starting unless the mower blade brake is
disengaged and parking brake is engaged. The system also
shuts the engine off if the operator's left foot is raised from
the interlock pedal with the mower and parking brakes
disengaged.
WARNING:
Never operate the mower with the interlock
system disconnected or malfunctioning. Do not
disconnect or bypass any switch; injury to
yourself and others or property damage could
result.
If the safety interlock system is malfunctioning or if you
want to ensure that it is working properly, perform the tests
in Table 4-1. Stop the test and have the system inspected
and repaired if:
4.3 INITIAL RUN-IN PROCEDURES (First
Day of Use or Approximately 10 Hours)
1. Check all belts for proper tension at 2, 4 and 8 hours;
adjust as needed.
2. Check the neutral adjustment. If necessary, adjust the
linkage so that the mower does not move when forward
and reverse pedal is in neutral (See Adjustments in
Section 6).
3. Check the tires for proper inflation (See Section 7-2).
4. Check for loose hardware. Tighten as needed.
5. Perform Interlock Tests in Table 4-1.
6. Apply lubricant to all machine grease fittings. See
Lubrication Chart in Section 7.2.
the engine does not start in test 1, or
the engine does start during tests 2 and 3, or
the engine continues to run during tests 4 and 5.
Table 4-1 Interlock System Tests
Left Foot Parking Mower Engine
Lifted From Brake Blade Operates
Interlock Brake
Pedal
Test Yes No On Off OnOff Yes No
1 -XX XX
2 XX XX
3 -XXXX
4 XX XX
5 X XXX
10
Section 4
4.4 DIESEL ENGINE BREAK-IN
The proper break-in of a new diesel engine can make a
difference in the performance and life of the engine. Perform
the following break-in procedure during the first 50 hours
of operation:
1. A new engine should be operated with as near full load
as possible. However, the engine must be allowed to
reach an operating temperature before operating at full
load conditions.
2. The engine oil should be checked twice daily. Higher
than normal oil consumption is not uncommon during
the initial break-in period.
3. Change the oil and filter element after the first 40
hours of operation.
4. Check all engine belts for proper tension after the first
10 hours of operation and adjust, if necessary. Refer
to Adjustments in Section 6.
4. Turn the ignition key switch to the PREHEAT position
until the indicator light for the glow plug glows bright
red. The colder the temperature, the longer it will take
to energize the glow plug. This step is not necessary
when starting a warm engine.
5. Turn the ignition key switch to START position and
release the key as soon as the engine starts. Do not
hold the key in the START position for more than 15
seconds at a time. Allow at least 60 seconds between
each cranking attempt to inhibit overheating the starter
motor. Prolonged cranking can damage the starter
motor and shorten battery life.
6. Allow engine to warm to operating temperature.
4.6 OPERATOR COMFORT ADJUSTMENTS
Two adjustments can be made to make your mowing job
comfortable. The steering handle can be adjusted up or
down and the seat can be adjusted forward or back.
5. During the break-in period, check and tighten all
engine hardware.
4.5 STARTING THE DIESEL ENGINE
CAUTION:
DO NOT USE STARTING FLUIDS. Use of starting
fluids in the air intake system may be potentially
explosive or cause “Runaway” engine condition
that could result in engine damage and/or
personal injury.
1. Be sure the fuel shut-off valve is completely open.
The valve is located in the fuel line between the fuel
tank and electric fuel pump (See Section 7).
2. Sit in the operators seat and depress the interlock foot
pedal with your left foot. Make sure the parking brake
and mower blade brake are engaged.
A. Adjusting Steering Handle Height
1. Remove the hardware securing the handle to the
steering shaft. Two sets of holes are available to
adjust the handle height.
Hardware
Second Bolt Hole
Figure 4-4 Steering Handle Adjustment
2. Move the handle to align with the other holes in the
steering shaft. Install the hardware and tighten.
3. Set throttle lever to 3/4 throttle.
11
Section 4
B. Seat Adjustment
1. Pull the handle on the left side of seat (Figure 4-5) and
move the seat either forward or back.
2. Release the handle to lock the position.
Figure 4-5 Seat Adjustment
4.7 ADJUSTING GROUND SPEED AND
DIRECTION
-NOTE-
If you are not familiar with the operation of
the hydrostatic drive, practice turning and maneuvering with the foot controls before engaging the blades. Learn the operation in an open
area away from buildings, fences, or obstructions. Learn the operation on a flat ground
before operating on slopes. Start maneuvering with SLOW engine speed until you are familiar with all operating characteristics. Practice maneuvering the mower until you can
make it go exactly where you intend.
1. To travel forward, depress the right foot pedal at the
toe. (See Figure 4-6). The further the pedal is depressed the faster the mower will travel forward.
Figure 4-6 Forward - Depress Toe End of Pedal
-NOTE-
Before shifting from forward to reverse, or reverse to forward, come to complete stop then
shift the foot pedal to the desired direction.
2. To travel backwards (reverse), depress the right foot
pedal at the heel (See Figure 4-7). The further the
pedal is depressed the faster the mower will travel
backwards. Use slower traveling speed when traveling
backwards and observe the area behind you before
moving.
-NOTE-
If the mower is driven on public roads, it must
comply with state and local ordinances as well
as SAE J137 and/or ASME S279 requirements.
Contact your local authorities for regulations
and equipment requirements.
-NOTE-
The left operator foot pedal must be depressed
before operation.
Figure 4-7 Backward (Reverse) Operation- Depress
Heel End of Pedal
12
Section 4
3. Check that all systems function correctly.
4. When traveling, the throttle control can be adjusted to
increase or decrease travel speed.
5. Reduce speed when turning around trees, shrubs, etc.
IMPORTANT:
Avoid high-speed turns on all surfaces. Tires
can slip on grass and can wear rapidly on
concrete and asphalt.
6. When going over curbs, first activate the mower deck
lift switch to fully raise the deck to clear the curb. Go
FORWARD over the curb.
4.8 ENGAGING THE MOWER
1. Set engine throttle about 1/2 speed. Do not attempt
to engage the blade at high engine speed as this
shortens the electric clutch life use only moderate
engine speed when engaging the blades.
3. Always operate the engine at full throttle to
properly maintain cutting speeds. If the engine
starts to lug down, reduce the forward speed to
allow the engine to operate at maximum RPM.
4.9 HILLSIDE OPERATION
WARNING:
To minimize the possibility of overturning, the
least dangerous method of operating on hills
and terraces is to travel vertically up and down
the slope, not horizontally along the slope.
Avoid any unnecessary turns and travel at
reduced speed.
1. The mower has been designed for good traction and
stability under normal mowing conditions. However,
caution must be used when traveling on slopes,
especially when the grass is wet. Wet grass limits
traction and steering control.
2. Engage the mower blades by moving the blade brake
lever down and to the right.
WARNING:
A safety interlock switch (left foot pedal) will
cause the engine to stop if the blade brake
is disengaged, and the left foot pedal is not
depressed. The function of the switch
should be checked by the operator raising
his left foot and disengaging the blade
brake; the engine should stop. If the switch
is not working, it should be repaired or
replaced before operating the mower. Do
not disconnect the interlock safety switches
because they are for the operator’s protection.
-IMPORTANT-
Do not engage the mower blades when
transporting the mower across drives, loose
materials, etc.
2. To inhibit tipping or loss of control, do not start or
stop suddenly, avoid unnecessary turns and travel at a
reduced speed.
3. Keep tires properly inflated.
4. Always travel up or down the slope, whenever possible; NEVER across the slope.
5. If the mower cannot climb the slope, the grade is too
steep for safe operation. Do not make another attempt
to climb the slope. Engage the blade brake to stop the
blades and back down slowly.
13
Figure 4-8 Proper Operation on Slope
Section 4
-IMPORTANT-
If at all possible, do not engage the mower
brake with engine running at high speed, since
premature wear of the electric clutch will occur. Lower speed to near idle then engage the
brake.
CAUTION:
The blade brake stops the blades from rotating.
If the blades do not stop, contact your Scag
Dealer.
CAUTION:
Remove the key from the ignition switch when
leaving the mower unattended to inhibit children
and inexperienced operators from starting the
engine.
Figure 4-9 Improper Operation on Slope
4.10 STOPPING
1. Slow engine speed to idle.
2. Place the right foot pedal in the center (neutral)
position.
3. Engage the blade brake.
4. Engage the parking brake and turn ignition key to OFF.
4.1 1 AFTER OPERA TION
1. Park the mower on a flat and level surface and fully
lower the cutting deck to the ground. Stop the engine
and engage the parking and blade brakes. Remove the
key from the ignition switch.
-IMPORTANT-
If the radiator dirt screen is not removed and
cleaned after every use, the screen will become clogged with grass clippings, etc., blocking the air flow through the radiator. This
will cause a high engine operating temperature that may cause damage to the engine.
2. Clean the radiator dirt screen. See Section 7 for
radiator dirt screen removal and cleaning instructions..
3. Wash the entire mower after each use. Do not use high
pressure spray or direct the spray onto electrical
components.
14
Section 4
-IMPORTANT-
Do not wash a hot or running engine. Use
compressed air to clean the engine and the
radiator fins. Cold water will damage the
engine and/or radiator.
4. Keep the entire mower clean to inhibit serious heat
damage to the engine or hydraulic oil circuit.
5. Recheck the cutter drive belts for proper tension,
alignment and any signs of rubbing. Correct and adjust
as necessary.
6. Fill the fuel tank with fresh, clean fuel at the end of
every day of operation.
7. Check the tire pressure. Inflate tires if necessary.
4.12 MOVING MOWER WITH THE ENGINE
STOPPED
To free-wheel or move the mower around without the
engine running, rotate the dump valve handle (screw and
nut) located on the side of the hydraulic pump to full open
position. See Figure 4-10. Disengage the parking brake
and move the mower by hand. The lever must be returned
to the original position to operate the mower.
4.13 RECOMMENDATIONS FOR MOWING
1. Keep the mower deck and discharge chute clean.
2. Mow with sharp blades. A dull blade will tear grass,
resulting in poor lawn appearance and takes extra
power (slow mowing speed).
3. The discharge deflector must not be removed and must
be kept in the lowest position to deflect grass clippings
and thrown objects downward. Orient the side discharge away from sidewalks or street to minimize
cleanup of clippings. When mowing close to obstacles,
orient the discharge away from obstacles to reduce the
chance of property damage by thrown objects.
4. Cut grass when it is dry and not too tall. Mow
frequently and do not cut grass too short (cut off 1/3
or less of existing grass for best appearance).
5. Operate the engine at or near full throttle for best
cutting. Mowing with a lower RPM causes the mower
to not cut clean and tear the grass. The engine is
designed to be operated at full speed.
6. Use slow travel speed for trimming purposes.
7. When mowing tall or wet grass, mow the grass twice.
Raise the mower to the highest setting for the first pass
and then make a second cutting pass to the desired
height.
Dump Valve
Handle
Close
Figure 4-10 Dump Valve Handle
8. Be sure the mower is leveled properly for a smooth
cut. See Section 7, Adjustments.
Open
9. Use alternate stripe mowing pattern for best appearance and vary the direction of the stripe each time the
grass is mowed to avoid wear patterns in the grass.
4.14 ADJUSTING CUTTING HEIGHT
The mower deck height switch on the instrument panel is
used to adjust the cutting height of the deck. Do not adjust
the cutting height while the mower is moving. Stop the
mower, then activate the deck height switch to position the
deck at the desired height. A gauge is located on the right
front of the mower (See Figure 4-11) for use in selecting
the proper cutting height.
15
1
2
3
4
Figure 4-11 Mower Cutting Height Gauge
Section 4
4.15 TILTING THE MOWER DECK
CAUTION:
Do not tilt the deck with the mower blades
rotating. Engage the blade brake before tilting
the deck. Bodily injury or damage to the mower
or property could result.
1. Stop the traveling movement of the mower and engage
the blade brake.
2. Use the deck tilt control switch on the instrument panel
to raise the deck.
3. Before lowering the deck, observe that there are no
objects under the deck. Remove any objects then,
activate the deck tilt switch to lower the deck.
16
Section 5
TROUBLESHOOTING CUTTING CONDITIONS
CONDITION
CAUSE
CURE
Stringers - OccasionalLow engine RPMRun engine at full 3600 RPM
Blades of Uncut
GrassGround speed too fastSlow speed to adjust for conditions
Wet grassCut grass after it has dried out
Dull blades, incorrect sharpeningSharpen blades
Deck plugged, grass accumulation Clean underside of deck
Low engine RPMRun engine at full 3600 RPM
Belt slippingAdjust belt tension
Deck plugged, grass accumulation Clean underside of deck
Ground speed too fastSlow speed to adjust for conditions
Wet grassCut grass after it has dried out
Width of Deck
SGB018
Bent bladesReplace blades
Streaking - Strips ofNot enough overlappingIncrease the overlap of each
Uncut Grass Betweenbetween rowspass
Cutting Paths
Width
of
Deck
SGB019
Width
of
Deck
17
TROUBLESHOOTING
Section 5
CONDITION
CAUSE
CURE
Uneven Cut on FlatLift worn off of bladeReplace blade
Ground - Wavy
High-LowBlade upside downMount with cutting edge toward
Appearance,ground
Scalloped Cut, or
Rough ContourDeck plugged, grass accumulationClean underside of deck
Too much blade angle (deck pitch) Adjust pitch and level
Deck mounted improperlySee your authorized SCAG dealer
Bent spindle areaSee your authorized SCAG dealer
Dull bladeSharpen blade
Width of Deck
SGB020
Uneven Cut onUneven groundMay need to reduce ground speed,
Uneven Ground -raise cutting height, and/or change
Wavy Appearance,direction of cut
High-Low Scalloped
Cut, or Rough Contour
Width of Deck
SGB021
Sloping Ridge AcrossTire pressures not equalCheck and adjust tire pressure
Width of Cutting Path
Wheels unevenCheck and adjust tire pressure
Deck mounted incorrectlySee your authorized SCAG dealer
Width of Deck
SGB023
18
Section 5
TROUBLESHOOTING
CONDITION
CAUSE
CURE
Scalping - BladesLow tire pressuresCheck and adjust pressures
Hitting Dirt or
Cutting Very Close toGround speed too fastSlow speed to adjust for conditions
the Ground
Cutting too lowMay need to reduce ground speed,
raise cutting height, change direction
of cut, and/or change pitch and level
Rough terrainMay need to reduce ground speed,
raise cutting height, and/or change
direction of cut
Ground speed too fastSlow speed to adjust for conditions
Width of Deck
SGB022
Wet grassCut grass after it has dried out
Step CutBlades not mounted evenlyAdjust pitch and level
Ridge in Center of
Cutting PathBent bladeReplace blade
Internal spindle failureSee your authorized SCAG dealer
Mounting of spindle incorrectSee your authorized SCAG dealer
Width of Deck
SGB024
Slope Cut - SlopingBent spindle mounting areaSee your authorized SCAG dealer
Ridges Across Width
of Cutting PathInternal spindle failureSee your authorized SCAG dealer
Bent deck housingSee your authorized SCAG dealer
Width of Deck
SGB025
19
ADJUSTMENTS
Section 6
6.1 P ARKING BRAKE ADJUSTMENT
WARNING:
Do not operate the mower if the parking brake is
not operable. Possible severe injury could
result.
The parking brake linkage should be adjusted whenever the
parking brake lever is placed in the Engage position and
the parking brake will not hold the mower from moving. A
minor adjustment can be made at the control lever by
loosening the jam nut shown in Figure 6-1 and turning the
rod in a clockwise direction to tighten the linkage. Tighten
the jam nut.
If this adjustment does not hold the mower from moving or
no more thread is available on the rod, contact your Scag
dealer before operating the mower.
6.2 FORW ARD/REVERSE NEUTRAL
ADJUSTMENT
The forward/reverse linkage should be adjusted whenever
the mower will not stay stationary when the forward/reverse
(right) foot pedal is placed in the neutral position.
1. Set the engine deck on jack stands so the wheels are
free to rotate.
2. Block the caster wheels to prevent an accident should
the unit fall off the jacks.
3. Start the engine and observe for drive wheel
rotation.
If the wheels consistently rotate when the foot control
is in neutral, go to step 4.
If the drive wheels intermittently rotate, i.e. the drive
wheels sometimes rotate and sometimes do not when
the foot pedal is not depressed, then check the neutral
adjustment bolt for zero free play in the neutral control
spring.
Adjustment
Dimension
1/4"
Right Foot Pedal
Adjustment Nuts
Pump Drive
Adjustment Nut
Forward/Reverse
Neutral Adjustment
Nut
Parking Brake
Adjustment Nuts
Figure 6-1 Adjustments
20
Section 6
-NOTE-
If you turn the nut too much, you will compress the spring, making too much end play.
Go to step 4.
4. If the drive wheels rotate in rearward travel direction,
turn the adjustment bolt (Figure 6-1) clockwise until
rotation stops. If the drive wheels rotate in the forward travel direction, turn the adjusting bolt counterclockwise until rotation stops.
5. Check the adjustment of the right foot pedal for full
forward speed. The bottom of the foot pedal should be
1/4 inch from the top of the foot plate (See Figure 6-1)
when the pump is stroked in the full forward position.
To make an adjustment, loosen the jam nut at the
pump control bellcrank (Figure 6-1). Depress the foot
pedal and turn the control rod until 1/4 inch is obtained
between the bottom of the foot pedal and the top of the
foot plate. Tighten the jam nut.
6. Start the engine. The drive wheels should rotate only
when the forward/reverse foot pedal is depressed.
6.3 THROTTLE CONTROL LINKAGE
ADJUSTMENT
Should the throttle control lever not stay in
position after moving it to increase or decrease the
engine speed, the throttle linkage must be
tightened. Hold the lock nut (Figure 6-2) with a wrench
while turning the bolt clockwise to tighten the throttle lever
against the friction plate. Do not overtighten as the control
lever will be hard to move.
Locknut
Bolt
Figure 6-2 Throttle Control Adjustment
6.4 CUTTER BRAKE LINKAGE
The cutter brake linkage is self-adjusting. If the brake will
not hold the cutter blades from turning, consult your Scag
dealer. Do not operate the mower if the cutter brake is not
functioning properly.
6.5 FAN BELT ADJUSTMENT
1. Remove the pump belt guard to gain access to the fan
drive idler bracket.
2. Loosen the two bolts (A and B, Figure 6-3). Using a
3/8 inch ratchet wrench installed in hole C, rotate the
bracket until 1/2 inch deflection in the belt is observed
using 10 pounds of pressure on the belt. See Engine
Drive Belts, section 7.9 for checking method.
If the engine speed must be increased or decreased, consult
your Scag dealer.
21
A
B
C
Figure 6-3 Fan Belt Adjustment
Section 6
3. After proper tension is obtained, tighten the two bolts
and install the pump belt guard.
6.6 PUMP DRIVE BELT ADJUSTMENT
To adjust belt tension, turn the adjusting nut (Figure 6-1)
until 1/2 inch deflection in belt is obtained with 10 pounds
of pressure. See Engine Drive Belts, section 7.9 for checking
method.
6.7 ELECTRIC CLUTCH DRIVE BELT
ADJUSTMENT
To adjust the belt tension, turn the adjusting nut (Figure 6-
4) to obtain 1/2 inch belt deflection with 10 pounds of
pressure. See Engine Drive Belts, section 7.9 for checking
method.
Adjusting Bolt
Adjusting Bolt
Location
Figure 6-5 Alternator Belt Adjustment
6.9 CUTTER DRIVE BELT ADJUSTMENTS
1. Remove the top cutter deck cover.
Figure 6-4 Electric Clutch Drive Belt Adjustment
6.8 ALTERNATOR BELT ADJUSTMENT
To adjust the alternator belt tension, loosen the two bolts
holding the alternator (Figure 6-5). Move the alternator
until proper tension of 0.28 to 0.35 inch deflection with 22
pounds of pressure is obtained, then tighten the two bolts.
See Engine Drive Belts, section 7.9 for checking method.
2. Each belt has an adjustment rod attached to its belt
idler arm. To adjust the belt tension, turn the adjusting
nut (Figure 6-6) until 1/2 inch deflection in the belt is
obtained with 10 pounds of pressure. See Cutter Deck
Belts, section 7-10 for checking method.
Tension Adjusting Nuts
Figure 6-6 Blade Belt Tension Adjustments
(Mag-72 Deck Shown)
3. Replace the top cutter deck cover.
22
Section 6
6.10 BELT ALIGNMENT
Belt alignment is important for proper performance of your
Scag mower. If you experience frequent belt wear or
breakage, see your authorized Scag service dealer for belt
adjustment.
6.11 CUTTER DECK ADJUSTMENTS
Due to many conditions that exist, it is difficult to suggest a
setting that will work for every lawn. However, two
adjustments should be made on the cutter deck to ensure
proper grass cutting: DECK LEVEL AND PITCH.
-NOTE-
Before checking for proper cutter deck adjustments, check that all tires are inflated to the
correct pressure.
DECK LEVEL is the adjustment to level the deck side-toside. For proper blade cutting, the deck should be level.
To check for level, place the mower on a flat, level surface.
On the right side of the deck, measure from the ground to
the bottom of the cutter deck (Figure 6-7). Then, take a
measurement on the left side of the deck. Both measurements
should be equal. If different, adjust the deck to level.
To level the deck, loosen the adjusting nut (Figure 6-8) and
lift or lower the deck until the left side measurement equals
the right side measurement. Tighten the adjusting nut.
Adjusting Nut
Figure 6-8 Leveling the Cutter Deck
PITCH is the adjustment to angle the blades from rear to
front. For proper grass cutting, the blades should be angled
forward. To check proper blade pitch, place the mower on
a flat, level surface. Measure the distance from the ground
to the rear of the mower deck ("X", Figure 6-9). Then,
measure on both sides of the mower deck the distance from
the ground to the front of the deck ("Y"). The front should
be 1/4 inch lower than the rear. If not correct, adjust the
pitch.
Figure 6-7 Measuring Height of Deck
= " Y "
Figure 6-9 Pitch Measurement
1. To adjust the pitch, loosen the jam nut on both
adjusting rods (See Figure 6-10).
23
23
" X " =
2. Turn the adjusting rods counter-clockwise to lower the
front of the deck and clockwise to raise the front of the
deck. When a difference of 1/4 inch from front to rear
is obtained on left and right, tighten both jam nuts.
Adjusting Nut
Jam Nut
Section 6
1
2
3
4
Adjusting Rod
Figure 6-10 Adjusting Deck Pitch
6.12 BLADE CUTTING HEIGHT
ADJUSTMENT
The blade cutting height is adjusted by actuating the deck
height switch on the instrument panel. However, if the
cutting height compared to what is shown on the cutting
height gauge (See Figure 6-12) is in question, the cutting
height should be checked. To check the cutting height, lift
the discharge chute and measure from the ground to the
cutting edge of the blade (See Figure 6-11). If the
measurement is different from what is registered on the
gauge, adjust the gauge rod to the proper setting.
Blade
Tape Measure
Figure 6-11 Measuring Cutting Edge Height
Loosen the two jam nuts on the gauge rod (See Figure
6-12). Slide the gauge rod to the proper setting on the height
gauge. Tighten the jam nuts.
14481476Switch, Safety - Parking Brake
15481474Switch, Foot Pedal and Cutter Brake Interlocks
16481304Sender, Fuel (includes Gasket and Screws)
1704021-10Hex Locknut, Elastic Stop, 5/16-18
1848030-10Clamp
1904003-12Carriage Bolt, 5/16-18 x 3/4
20481204Electric Clutch
21*Fuel Pump, Electric
22481195Actuator, Deck Lift
23*Sender, Oil Pressure
2404025-02Hex Nut, M8- 1.25
25481335Cap, Alternator T erminal
26481190Sender, Water T emperature
27481177Battery
28481336Cap, Battery Terminal - Black
29481176-02Battery Cable, Black
30481337Cap, Battery Terminal - Red
31481176-01Battery Cable, Red
3204025-01Hex Nut, M6 - 1.00
3304017-16Serr. Fl.He x Head Capscrew, 5/16-18 x3/4
3404019-03Serr. Fl. Hex Nut, 5/16-18
* Available only from the engine man ufacturer.
-NOTE-
Some of the hardware is common hardware and you may purchase it locally. Be sure that all bolts
purchased are a grade 5.
59
CUTTER BRAKE LINKAGE
35
1
2
3
4
14
6
12
24
36
39
25
2
5
38
18
40
7
6
9
8
17
10
11
29
11
14
15
14
13
16
31
30
41
11
21
40
25
28
27
41
21
60
24
40
25
32
25
11
39
14
40
26
27
23
33
22
21
13
16
19
37
20
21
34
14
390S0121
CUTTER BRAKE LINKAGE
Ref. Part
No. Number Description
104041-08Flatwasher, 3/4 (.766 x 1.250 x .060)
04041-08S Flatwasher, 3/4 (.766 x 1.250 x .035)
204050-02Retaining Ring - .75 Ext
345702Lever, Clutch Engage
404021-10Hex Locknut, Elastic Stop, 5/16-18
5481163Spring, Clutch Lever
604019-03Serr. Fl. He x Nut, 5/16-18
704017-17Serr. Fl. He x Head Capscrew, 5/16-18 x 1
804020-04Nut, Hex, 3/8-16
948092Grip, Clutch Lever
10481244Spring, Friction Control
1 104041-07Flatwasher, 3/8 (.391 x .938 x .105)
1204001-51Bolt, Hex Head, 3/8-16 x 3-3/4
1304017-26Serr. Fl. Hex Head Capscrew, 3/8-16 x 3/4
1404021-09Hex Locknut, Elastic Stop, 3/8-16
1548464Ball Joint, RH Thd, 3/8-16
1604001-53Bolt, Hex Head, 5/16-18x 2-1/2
1745693Lever, Clutch
1804017-19Serr. Fl. Hex Head Capscrew, 5/16-18 x 1-1/2
19421805Base, Brake Assembly
20481474Switch, Interlock
2104019-04Serr. Fl. Hex Nut, 3/8-16
2204001-31Bolt, Hex Head, 3/8-16 x 2-1/2
2346875Lever, Brake Engage (Includes 24, 25)
2448114-05Grease Fitting, Short
2548100-04Bushing, Oilite - .50 I.D.
2644109Rod, Clutch Engage
2704062-02Cotter Pin, Hair (.080 x1.19)
2846876Bellcrank, Clutch Engage (Includes 24, 25)
2943212Sleeve
3004001-20Bolt, Hex Head, 3/8-16 x 1-1/2
31481034Spring, Brake
3204001-26Bolt, Hex Head, 3/8-16 x 1-1/4
33481170Brake Band
3443337Anchor, Brake
3543336Spacer, Brake
3644110Rod, Clutch Engage
3704017-20Serr. Fl. Hex Head Capscrew, 5/16-18 x 1-3/4
3804020-14Hex Nut, 3/8-24
3943110Sleeve, Control Lever
4004040-04Flatwasher, 5/16 (.344 x .688 x .065)
4104021-10Hex Locknut, Elastic Stop, 5/16-18
-NOTE-
Some of the hardware is common hardware and you may purchase it locally. Be sure that all bolts
purchased are a grade 5.
61
27
PARKING BRAKE LINKAGE
1
28
23
24
22
20
21
25
15
16
14
13
17
16
6
29
8
6
34
24
16
32
4
33
3
2
16
18
14
6
19
30
5
6
6
12
35
9
4
3
7
6
26
3
4
5
11
10
8
8
31
8
7
21
20
12
62
24
20
22
23
MAG008
PARKING BRAKE LINKAGE
Ref. Part
No. Number Description
148093Grip, Handle
245716Lever, Brake
348114-04Grease Fitting
404050-01Retaining Ring, .625 Ext
504020-05Hex Locknut, Elastic Stop, 3/8-16
604041-07Washer, Flat, 3/8 (.391 x .938 x .105)
748464Ball Joint, 3/8-24 RH Thd
804021-09Hex Locknut, Elastic Stop, 3/8-16
945782Arm, Weldment
1004020-14Hex Nut, 3/8-24
1 104004-23Rod, Parking Brake
1204003-05Carriage Bolt, 3/8-16 x 1-1/2
13481474Switch, Interlock
1404001-19Bolt, Hex Head, 3/8-16 x 1.00
1504017-17Serr. Fl. Hex Head Capscrew, 5/16-18 x 1.00
1604019-04Serr. Fl. Hex Nut, 3/8-16
1745781Mounting Base, Parking Brake
1804001-21Bolt, Hex head, 3/8-16 x 1-1/4
19421338Link, Cam
2004019-02Serr. Fl. Hex Nut, 1/4-20
2104001-59Bolt, Hex Head, 1/4-20 x 1-1/4
2244108Rod, Brake Actuator
2343032Swivel
240462-02Hair Pin, Cotter , .08 x 1.19
2545705Actuator, Brake
2604017-37Serr. Fl He x Head Capscre w , 1/2-13 x 1-3/4
2704019-03Serr. Fl. Hex Nut, 5/16-18
2804019-06Serr. Fl. Hex Nut, 1/2-13
2948544Ball Joint, 3/8-24 LH Thread
3043212Sleeve
3144124Rod, Interlock
3245834Bracket, Neutral Lockout Mounting
3304001-51Bolt, Hex Head, 3/8-16 x 3.75
3445835Bracket, Neutral Lockout
3504003-03Carriage Bolt
-NOTE-
Some of the hardware is common hardware and you may purchase it locally, Be sure that all bolts
purchased are a grade 5.
63
32
15
26
28
27
THROTTLE LINKAGE
1
2
3
34
23
28
37
7
5
6
7
30
8
9
35
10
29
4
38
30
17
27
26
31
23
14
36
24
39
25
18
33
17
16
23
19
12
13
18
22
11
19
20
21
21
64
390S0123
THROTTLE LINKAGE
Ref. Part
No.Number Description
104003-02Carriage Bolt, 1/4-20 x .75
2421776Mounting Base, Throttle
304019-02Serr . Fl. Hex Nut, 1/4-20
404001-13Bolt, Hex Head, 5/16-18 x 2-3/4
546877Lever, Throttle (Includes 6, 7)
648114-05Grease Fitting
748100-04Bushing, Oilite - .50 I.D.
844115Rod, Throttle Control
904002-11Bolt, Hex Head, M10 - 1.25 x 30
1045822Mounting Bracket, Throttle
1 104021-13Hex Locknut, Elastic Stop, 5/8-11
1204041-10Flatwasher, 5/8
13481244Spring, Friction Control
1404004-26Stud, 5/16-24 x 4.50
1504020-03Hex Nut, 5/16-18
16481189Rod End, 5/16-24 RH Thread
1704040-04Flatwasher, 5/16 (.344 x .688 x .065)
1804001-10Bolt, Hex Head, 5/16-18 x 1-1/4
1904019-02Serr. Fl. He x Nut, 1/4-20
20481314Spring, Throttle Control
2104019-03Serr. Fl. Hex Nut, 5/16-18
2204001-39Bolt, Hex Head, 5/16-18 x 2-1/4
2304021-10Hex Locknut, Elastic Stop, 5/16-18
2404001-59Bolt, Hex Head, 1/4-20 x 1-14
25421997Lever, Throttle
2604021-09Hex Locknut, Elastic Stop, 3/8-16
2748464Ball Joint, 3/8-24 RH Thread
2804040-04Flatwasher, 5/16
2904001-20Bolt, Hex Head, 3/8-16 x 1-1/2
3004020-14Hex Nut, 3/8-24
31481188Rod End, 5/16-24 LH Thread
32481092Knob, Shifter
33481243Disc, Friction
3404001-51Bolt, Hex Head, 3/8-16 x 3-3/4
3504030-05Lockwasher, 7/16
3604001-125 Bolt, Hex Head, 5/8-11 X 3-1/2
3743110Sleeve
3843212Sleeve
3904020-13Hex Nut,5/16-24
-NOTE-
Some of the hardware is common hardware and you may purchase it locally. Be sure that all bolts
purchased are a grade 5.
65
16
FORWARD/REVERSE LINKAGE
1
2
3
4
5
10
15
10
1
2
22
12
12
13
21
18
17
3
4
6
8
9
7
11
4
24
20
19
14
12
390S0124
66
FORWARD/REVERSE LINKAGE
Ref. Part
No. Number Description
104021-09Hex Locknut, Elastic Stop, 3/8-16
248544Ball Joint, 3/8-24 LH Thread
304041-07Flatwasher, 3/8 (.391 x .938 x .105)
404003-05Carriage Bolt, 3/8-16 x 1-1/2
504004-22Rod, Tr ansmission Control
645708Bellcrank, Pump Control
704021-08Hex Locknut, Elastic Stop, 1/4-20
804001-59Bolt, Hex Head, 1/4-20 x 1-1/4
904003-04Carriage Bolt, 5/16-18 x 1
1004020-14Hex Nut, 3/8-24
1 104019-03Serr. Fl. Hex Nut, 5/16-18
1243257Bushing, Spring Keeper
1348463Spring, Neutral Return
1448512Bolt, Neutral Adjustment, 3/8-24 x 6-3/4
15421148Retainer, Neutral Spring
1648464Ball Joint, 3/8-24 RH Thread
17481102Hydraulic Pump
1804001-71Bolt, Hex Head, 1/2-13 x 1-1/2
1904030-06Lockwasher, 1/2
2004020-07Hex Nut, 1/2-13
2104010-11Screw, Round Head, #10-32
2204021-01Hex Nut, Elastic Stop, #10-32
2304040-15Flatwasher, 5/16 (.375 x .875 x .083
-NOTE-
Some of the hardware is common hardware and you may purchase it locally. Be sure that all bolts
purchased are a grade 5.
67
FUEL TANK AND LINES
27
8
3
28
23
29
31
56
23
16
24
15
16
2
1
4
26
14
20
16
15
30
25
9
16
17
16
15
16
18
13
7
9
10
15
16
11
16
15
14
68
22
16
16
19
21
390S0125
FUEL TANK AND LINES
Ref. Part
No. Number Description
146933Fuel Tank (Includes 2, 3, 4)
2481313Fitting, Return Line
3481304Sender Unit, Fuel Level (Includes Gasket and Screws)
4481312Fitting, Hose
504017-16Serr. Fl. He x Head Capscre w, 5/16-18 x 3/4
6481298Cap, Diesel Fuel
745864Fill Neck Wlmt.
804020-01Hex Nut, #10-32
948136-08Clamp, Hose
10481296Hose, Fuel Fill
1 1481307Fuel Pre-Filter
1248030-08Clamp, Fuel Filter
1304017-05Serr. Fl. Hex Head Capscrew, 1/4-20 x 3/4
1404019-02Serr. Fl. Hex Nut, 1/4-20
15481178**Hose, Fuel Line
1648136-05Clamp Hose
17481308Valve, Fuel Shutoff
18*Fuel Pump, Electric
19*Fuel Filter (Kubota P/N 70000-43081)
2004017-17Serr. Fl. Hex Head Capscrew, 5/16-18 x 1
2104019-03Serr. Fl. Hex Nut, 5/16-18
2204021-08Hex Locknut, Elastic Stop, 1/4-20
2348059-03Fuel Hose Clamp, 3/16
24481179**Hose Fuel Line, 3/16 x 33"
2504017-04Serr. Fl. Hex Head Capscrew, 1/4-20 x1-1/2
26422003Strap, Fuel Tank
2704030-01Lockwasher, #10
28481431Elbow, 90 Deg.
29481432Bushing, Fuel Tank
3048351-10Hose, Fuel V ent, 1/2 x21.5"
3148502-04Clamp, Hose .75 OD Hose
* Available only from the engine manuf acturer.
** When ordering fuel line hose, specify the length required.
-NOTE-
Some of the hardware is common hardware and you may purchase it locally. Be sure that all bolts
purchased locally are a grade 5.
69
HYDRAULIC CIRCUITS
1
2
16
17
13
2
4
29
11
5
2
6
7
25
13
6
17
16
30
28
2
13
6
6
6
6
27
22
9
23
24
26
31
2
12
14
15
18
3
8
10
21
19
20
390S0126
70
HYDRAULIC CIRCUITS
Ref. Part
No. Number Description
1481292Hose, Pump to Oil Cooler, 5/8 Hose Barb
248136-04Clamp, Hose
3481301-01Elbow, 90°,
4481202Hose, Oil Cooler to Reservoir, 5/8 & 3/8 Hose Barb
548939Elbow, 90°
648059-01Clamp, Hose
748936-02Coupling, Hose, 7/8-14 SAE x 5/8 Hose Barb
848350-13Elbow, 90°, 1-1/16-12 JIC x 7/8-14 O-Ring
9481203-01Elbow, 90°, 3/4 JIC Swivel x 3/4 JIC
10481197Hose Assembly, Left Motor
1 1481201Hose Assembly, Pump Inlet
1204017-05Serr. Fl. Hex Head Capscrew, 1/4-20 x 3/4
1348482*Hose, Hydraulic, 1/4"
14481174Filter Head
1548758Filter, Hydraulic
1648350-03Elbow, 90°
1748353-02Coupling, Hose
1804021-10Hex Nut, Elastic Stop, 5/16-18
1904040-04Flatwasher, 5/16 (.344 x .688 x .065)
20481196Relief Valve, Dual Cross-Ov er
2104001-39Bolt, Hex Head, 5/16-18 x 2-1/4
22481199Hose Assembly, Pump to V alve
2348571-03Tube Cap , 1-1/16-12
2448937-02Tee, Run, 3/4 x 3/4
2548350-05Elbow, 90°, 7/8-14 JIC x 7/8-14 O-ring
2648602*Hose, Reservoir to Filter , 3/4
2748935-01Tee, Pushlock, 1/2
28481198Hose Assembly, Right Motor
2948937-01Tee, Run
3048309Bushing
3148936-01Hose BArb to JIC Swivel
* When ordering hydraulic hose, specify length required
-NOTE-
Some of the hardware is common hardware and you may purchase it locally. Be sure that all bolts
purchased are a grade 5.
71
RED
RED
RED
RED
RED
RED
*GLOW PLUG
TIMER
*SYNCHO-START
RELAY
GRN
WHT
*PARKING BRAKE
SWITCH
PINK/BLK
PINK/BLK
ORN/WHT
RED
GRN
FUSE
HOLDER
PURP
ORN
PINK
FUEL
SENDER
PURP
PINK
RED
BLK
LT. BLU
GRN
ORN
WHT
PURP
BLK
PINK
BLK
*SYNCHO-START
ENGINE
*DELAY MODULE TIMER
BLK
ORN
BLK
BLK
GRN
ORN
G
*VOLTMETER
I
ORN
RED
ORN
*IGNITION
SWITCH
RED
WHT
GLOW PLUG
*FUEL GAUGE
BLK
BLK
G
S
I
ORN
ORN
ORN/WHT
ORN
PINK
*GLOW PLUG
RED
ORN
LIGHT
B
D
E
*CUTTING
HEIGHT SWITCH
WHT
BLK
G
S
I
WHT
BLK
A
C
RED
STARTER
SOLENOID
WHT
GRN
*OIL
PRESSURE
SENDER
BLK
CONTROL PANEL
*WATER
TEMPERATURE GAUGE
ORN
BLK
RED/WHT
YEL/BLK
RED
RED
RED
*HOURMETER
BLK
BLU
WHT
BLK
BLK
ORN
BLK
BLK
B
E
BLKBLK
D
BLK
ORN
WHT
A
C
RED
ORN
BLK
BLU
BLK
BLK
*LOW OIL
PRESSURE
LIGHT
*CLUTCH
KILL CIRCUIT
RELAY
*DECK
LIFT
SWITCH
BLU
*ELECTRIC
CLUTCH
ORN
GRN
GRN
ORN
FUEL
PUMP
BLK
BLK
*FOOT
INTERLOCK
SWITCH
BLU
*CLUTCH
SWITCH
ORN
*CUTTING HEIGHT
ACTUATOR
WA TER TEMPERA TURE
SENDER
BATTERY
72
ALTERNA T OR
RED/WHT
YEL/BLK
*DECK LIFT
ACTUATOR
390S0127
48404
MANUFACTURED UNDER ONE OR MORE
OF THE FOLLOWING PATENTS:
PATENTS PENDING
4,487,006
4,885,903
4,920,733
4,967,543
4,991,382
4,998,948
4,118,617
48656
REPLACEMENT DECALS AND INFORMATION
DANGER
SPINNING BLADE
KEEP CLEAR
CONTACT CAN INJURE
1
7a, 7b
3
48071
10
1
2
3
WARNING
ROTATING BLADES AND BELTS
KEEP HANDS, FEET & CLOTHING CLEAR
KEEP ALL GUARDS IN PLACE
SHUT OFF ENGINE & DISENGAGE BLADE
CLUTCH BEFORE SERVICING
CLEAR AREA OF DEBRIS BEFORE MOWING
USE CAUTION IN DIRECTING DISCHARGE
KEEP BYSTANDERS, CHILDREN & PETS AWAY
READ INSTRUCTION MANUAL BEFORE OPERATING
DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING
KIT, OR ENTIRE GRASS CATCHER INSTALLED
2
6
481040
HEAVY DUTY
COMMERCIAL
INSTALL BELT COVER BEFORE
Ref. Part
No. Number Description
148071Decal, Danger - Spinning Blades
2481040Decal, Warning - Rotating Blades
3481326Decal, Magnum III
448072Decal, Heavy Duty Commercial
5481039Decal, Warning - Belt Cover
648404Decal, Metalcraft - Made In USA
7A481355Decal, Scag Logo - 12" x 4.23 (Hood)
7B48825Decal, Scag Logo - 8.5" x 2" (Seat Back)
8481331Decal, Cutting Height
948656Decal, Patent
10481186Decal, Instrument Panel
1 148320Decal, 61
1248327Decal, 72
48072
4
WARNING
OPERATING MACHINE
READ OPERATOR'S MANUAL
5
4
9
5
8
481039
1112
73
GREASE FITTING LUBRICATION CHART
LUBRICATION NO. OF
LOCATIONINTERVALLUBRICANT PLACES
1. Cutter Drive Spindle40 Hours/Weekly+Lithium MP White Grease 21251
2. Cutter Deck Spindles40 Hours/Weekly+Lithium MP White Grease 21253
Oil Type ..................................................................................... API Sandard, CD Grade or Better
Oil Filter .................................................................................... Full Flow Oil Filter Cartridge
Oil Capacity ............................................................................... 4 Quarts With Filter
Cooling ...................................................................................... Pressurized, Sealed Cooling System , 170° F Thermostat, Blade
Fan, Cooling Capacity 8 Quarts
Belts:
Alternator .............................................................................. See Engine Manual for Part Number
Fan......................................................................................... Scag Part Number - 481114
Electric Clutch ...................................................................... Scag Part Number - 481104
Hydraulic Pump .................................................................... Scag Part Number - 481103
ELECTRICAL
Battery ....................................................................................... 12 Volt
Charging System ....................................................................... Alternator
Charging Output ....................................................................... 12 Volt, 30 Amp
System Polarity.......................................................................... Negative Ground
Starter ........................................................................................ 12 Volt Electric Ring Gear Type, Key and Solenoid Operated
Interlock Switches ..................................................................... Left Foot Pedal, Blade Brake, and Parking Brake
Fuses .......................................................................................... Three (3) 30 Amp
TRACTOR
Drive Motors ............................................................................. 12 Cu. In. Cast Iron High Torque Motors
Steering ...................................................................................... Chain and Sprocket
Forward and Reverse Control ................................................... Pedal Operated Linkage Connected To The Hydraulic Pump
Parking Brake ............................................................................Lever Actuated Linkage to Drum Brakes on Both Drive Wheel
Assemblies
Wheels:
(2) Front Caster....................................................................12 x 3.5
Seat ............................................................................................ Milsco Seat With Adjustment Lever For Forward and Back
If incorrectly used, this machine can cause severe injury. Those who use and maintain the
machine should be trained in its proper use, warned of its dangers, and should read the entire
manual before attempting to set up, operate, adjust or service the machine.
LIMITED WARRANTY-COMMERCIAL EQUIPMENT
Any part of the Scag commercial mower manufactured by Scag Power Equipment and found, in the reasonable judgment
of Scag, to be defective in materials or workmanship, will be repaired or replaced by an Authorized Scag Service Dealer
without charge for parts and labor. This warranty is limited to the original purchaser and is not transferable. Proof of
purchase will be required by the dealer to substantiate any warranty claims. All warranty work must be performed by an
Authorized Scag Service Dealer.
This warranty is limited to the following specified periods from the date of the original retail purchase for defects in materials
or workmanship:
* Wear items including drive belts, blades, hoses and tires are warranted for 90 days.
* Batteries are covered for 90 days.
* Frame, deck, and structural components including oil reservoir, fittings, and oil cooler are
warranted for 1 year.
* Engines and electric starters are covered by the manufacturers warranty period.
* Drive system components are warranted for 1 year by the component manufacturer, in
conjunction with Scag Power Equipment. (Excluding fittings, hoses, cooling system, oil
reservoir, drive belts).
* Electric clutch components are warranted for 1 year.
Any Scag product used for rental purposes is covered by a 90 day warranty.
The Scag mower, including any defective part must be returned to an Authorized Scag Service Dealer within the warranty
period. The expense of delivering the mower to the dealer for warranty work and the expense of returning it to the owner
after repair will be paid for by the owner. Scags responsibility is limited to making the required repairs and no claim of
breach of warranty shall be cause for cancellation or rescission of the contract of sale of any Scag mower.
This warranty does not cover any mower that has been subject to misuse, neglect, negligence, or accident, or that has been
operated in any way contrary to the operating instructions as specified in the Operators Manual. The warranty does not
apply to any damage to the mower that is the result of improper maintenance, or to any mower or parts that have not been
assembled or installed as specified in the Operators Manual and Assembly Manual. The warranty does not cover any mower
that has been altered or modified, changing performance or durability. In addition, the warranty does not extend to repairs
made necessary by normal wear, or by the use of parts or accessories which, in the reasonable judgment of Scag, are either
incompatible with the Scag mower or adversely affect its operation, performance or durability.
Scag Power Equipment reserves the right to change or improve the design of any mower without assuming any obligation
to modify any mower previously manufactured.
All other implied warranties are limited in duration to the one (1) year warranty period or ninety (90) days for mowers used
for rental purpose. Accordingly, any such implied warranties including merchantability, fitness for a particular purpose,
or otherwise, are disclaimed in their entirety after the expiration of the appropriate one year or ninety day warranty period.
Scags obligation under this warranty is strictly and exclusively limited to the repair or replacement of defective parts and
Scag does not assume or authorize anyone to assume for them any other obligation. Some states do not allow limitations
on how long an implied warranty lasts, so the above limitation may not apply to you.
Scag assumes no responsibility for incidental, consequential or other damages including, but not limited to, expense for
gasoline, expense of delivering the mower to an Authorized Scag Service Dealer and expense of returning it to the owner,
mechanics travel time, telephone or telegram charges, rental of a like product during the time warranty repairs are being
performed, travel, loss or damage to personal property, loss of revenue, loss of use of the mower, loss of time or
inconvenience. Some states do not allow the exclusion or limitation of incidental or consequential damages,so the above
limitation or exclusion may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.