Scag SCAG SCR User Manual
MODEL SCR
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 03080
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:
SCR48-25CH with a serial number of 5590001 to 5599999
Always use the entire serial number listed on the serial number tag when referring to
this product.
TABLE OF CONTENTS
SUBJECT PAGE
Section 1 - General Information
1.1 Introduction ........................................................................................................................... 1
1.2 Directional Reference ............................................................................................................ 1
1.3 Servicing the Engine and Drive Train Components.............................................................. 1
Section 2 - Safety Information
2.1 Introduction ........................................................................................................................... 2
2.2 Signal Words.......................................................................................................................... 2
2.3 Before Operation Considerations .......................................................................................... 2
2.4 Operation Considerations ...................................................................................................... 3
2.5 Maintenance Considerations ................................................................................................. 4
2.6 Safety and Instructional Decals ............................................................................................. 5
Section 3 - Specifications .............................................. 6-7
Section 4 - Operating Instructions
4.1 Controls and Instrument Identification.................................................................................. 8
4.2 Safety Interlock System......................................................................................................... 9
4.3 Initial Run-In Procedures......................................................................................................10
4.4 Starting the Engine................................................................................................................10
4.5 Ground Travel and Steering ..................................................................................................10
4.6 Engaging the Deck Drive .....................................................................................................12
4.7 Hillside Operation .................................................................................................................12
4-8 Parking the Mower ...............................................................................................................13
4.9 After Operation ....................................................................................................................13
4.10 Hopper, Mulch or Side Discharge Operation........................................................................13
4.1 1 Removing Clogged Material .................................................................................................15
4.12 Moving Mower with Engine Stopped ...................................................................................16
4.13 Recommendations for Mowing .............................................................................................16
4.14 Adjusting Cutting Height .......................................................................................................16
4.15 Tilting the Cutter Deck..........................................................................................................17
Section 5 - Troubleshooting Cutting Conditions................................................................18-20
I
TABLE OF CONTENTS (CONT'D)
SUBJECT PAGE
Section 6 - Adjustments
6.1 Parking Brake Adjustment....................................................................................................21
6.2 Travel Adjustments ...............................................................................................................22
6.3 Throttle Control and Choke Adjustments..............................................................................25
6.4 Belt Adjustment ....................................................................................................................25
6.5 Belt Alignment ......................................................................................................................2 5
6.6 Cutter Deck Adjustments .....................................................................................................25
Section 7 - Maintenance
7.1 Maintenance Chart ...............................................................................................................26
7.2 Lubrication Fitting Points ......................................................................................................27
7.3 Hydraulic System..................................................................................................................29
7.4 Engine Oil .............................................................................................................................29
7.5 Engine Fuel System ..............................................................................................................30
7.6 Engine Air Cleaner................................................................................................................31
7.7 Battery ..................................................................................................................................31
7.8 Drive Belts ............................................................................................................................33
7.9 Cutter Blades ........................................................................................................................33
7.10 Tires ......................................................................................................................................34
7.11 Hopper ..................................................................................................................................34
7.12 C ut te r Deck Gearbox ...........................................................................................................34
7.13 Power Unit Gearbox .............................................................................................................35
7.14 Body, Deck, Hopper and Upholstery ....................................................................................36
Section 8 - Replacement Parts
Cutter Deck .............................................................................................................................. 38-39
Cutter Deck Support Components............................................................................................ 40-41
Sheet Metal............................................................................................................................... 42-43
Blower Assembly ..................................................................................................................... 44-45
Engine and Attaching Parts ...................................................................................................... 46-47
Traction Drive Components...................................................................................................... 48-49
Hydraulic Pump ........................................................................................................................ 50-51
Cutter Deck Gearbox ............................................................................................................... 52-53
Speed and Steering Controls..................................................................................................... 54-55
Parking Brake Mechanism ....................................................................................................... 56-57
Fuel and Hydraulic Components............................................................................................... 58-59
Electrical System ...................................................................................................................... 60-61
Hopper ...................................................................................................................................... 62-63
Hopper Actuator Mechanism ................................................................................................... 64-65
Replacement Decals ................................................................................................................. 66-67
Electrical Schematic .......................................................................................................................68
II
Section 1
GENERAL INFORMATION
1.1 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.
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.
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 the 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
When ordering parts, always give the model and serial
number of your tractor. The serial number plate is
located where shown in Figure 1-1.
The detail servicing and repair of the engine, hydraulic
pumps and gearboxes 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.
Serial Plate
SCR 2K SPL
Figure 1-1 Tractor Serial Number Plate Location
1
2.1 INTRODUCTION
Section 2
SAFETY INFORMATION
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.
sure every operator is properly trained and thoroughly
familiar with all of the controls before operating the mower.
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 a nominal charge of $2.00 for each
manual. Please indicate the complete model and serial
number of your Scag product.
Make
2.2 SIGNAL WORDS
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 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 depends significantly
upon your knowledge and understanding of all correct
operating practices and procedures of this machine.
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.
2.3 BEFORE OPERATION
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.
2
Section 2
5. DO NOT wear loose fitting clothing that could get
tangled 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.
6. Operator hearing protection is recommended,
particularly for continuous operation of the mower.
Wear suitable hearing protection. Prolonged exposure
to loud noise can cause hearing impairment or loss.
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 operator is seated
in the seat, the deck drive is disengaged, and the
speed control is placed in the neutral position with
the parking brake applied. The system also shuts
off the engine if the operator leaves the seat with
the mower running and the speed control is not in
the neutral postion with the parking brake applied.
It will also shut off the engine if the hopper is raised
with the cutter deck drive engaged. Never operate
equipment with the interlock system disconnected
or malfunctioning.
8. Be sure interlock switches are functioning correctly.
9. Fuel is flammable; handle with care. Fill fuel tank
outdoors. Never fill indoors. Use a funnel or spout to
inhibit spillage. Clean up any spillage before starting
the engine.
10. DO NOT add fuel to a running or hot engine. An
explosion could occur. Allow engine to cool for several
minutes before adding fuel.
11. Keep flammable objects (cigarettes, matches, etc.),
open flames and sparks away from the fuel tank and
fuel container.
12. Equipment must comply with the latest requirements
per ANSI J137 and/or ANSI S279 when driven on
public roads.
-NOTE-
If the mower is driven on public roads, it must
comply with state and local ordinances as well as
SAE J137 and/or ANSI / ASAE S279 requirements.
Contact your local authorities for regulations and
equipment requirements.
13. DO NOT operate without a chute deflector installed;
keep the deflector in lowest possible position.
14. Check the blade mounting bolts at frequent intervals
for proper tightness.
15. Make sure all hydraulic fluid connections are tight and
all hydraulic hoses and lines are in good condition
before starting the machine.
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. T o 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.
ALW A YS FOLLOW OSHA APPROVED OPERA TION.
3. Do not stop or start suddenly. WHEN MOWING A
HILLSIDE, MOW UP AND DOWN THE FACE
OF SLOPES, NEVER ACROSS THE FACE.
4. When using any attachment, never direct the discharge
of material toward bystanders or allow anyone near
the machine while in operation.
3
Section 2
5. Before attempting to start the engine, with the
operator in the seat, disengage power to the cutter
deck, place the hopper in the stowed position,
steering control levers in the neutral position and
engage the parking brake.
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.
Do not use your hand to dislodge the clogged
discharge chute. Use a stick or other device to
remove clogged material.
7. Be alert for holes, rocks, and roots in the terrain and
other hidden hazards. Keep away from any dropoff.
Beware of overhead obstructions such as low limbs,
etc. and underground obstacles such as sprinklers,
pipes, tree roots, etc. Cautiously enter a new area.
Be alert for hidden hazards.
8. Disengage power to cutter deck before backing up.
Do not mow in reverse unless absolutely necessary
and then only after observation of the entire area
behind the mower.
9. DO NOT turn sharply. Use care when backing up.
15. 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.
16. DO NOT run engine inside a building or confined
area without proper ventilation. Exhaust fumes are
hazardous and could cause death.
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. See the engine operator's
manual for information on engine settings.
10. Disengage power to cutter deck before crossing
roads, walks or gravel drives. Watch for traffic when
crossing roads or operating near roadways.
11. Mow only in daylight or good artificial light.
12. 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.
13. Disengage power to the attachments when
transporting or when not in use.
14. 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.
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 pinholes or nozzles that
eject hydraulic fluid under high pressure. Use only
cardboard or paper to search for leaks. If you need
service on your hydraulic system, please see your
authorized Scag dealer.
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
WARNING
INSTALL BELT COVER BEFORE
OPERATING MACHINE
READ OPERATOR'S MANUAL
481039
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
CAUTION
481040
CAUTION
AVOID INJURY FROM
BURNS. SHUT OFF
ENGINE BEFORE
REMOVING FUEL
TANK CAP.
481272
KEEP BYSTANDERS AWAY
CAUTION
BEFORE OPERATING
READ OPERATINGS
MANUAL AND SAFETY
INSTRUCTIONS
5
Section 3
SPECIFICATIONS
3.1 ENGINE
General Type .............................................................................. Heavy Duty Industrial/Commercial Gasoline
Brand ......................................................................................... Kohler
Model ......................................................................................... Command
Horsepower ................................................................................ 25 HP at 3600 RPM (Scag Model SCR48-25CH)
Type ........................................................................................... 4 Cycle Gasoline, Twin Cylinder, Horizontal Shaft
Displacement ............................................................................. 725 cc.
Cylinders.................................................................................... 2 with Cast Iron Sleeves
Governor .................................................................................... Mechanical Type with Variable Speed Control Set At 3600 RPM
Idle Speed .................................................................................. 1400 RPM
Fuel Pump Group ...................................................................... Mechanical Fuel Pump with In-Line Fuel Filter, Fixed Jet
Carburetor with Smart-Choke and Fuel Shutdown Solenoid
Fuel ............................................................................................ Non-Leaded Gasoline with a Minimum Octane Rating of 87
Oil Pump Group: ....................................................................... Positive Displacement Gerotor Oil Pump with Remote Oil Filter
Starter ........................................................................................ Electric Starting with Cell Starter
Belts:
Engine Belt ............................................................................. Scag Part Number - 481976
Blower Drive Belt.................................................................... Scag Part Number - 481977
Pump Drive Belt ...................................................................... Scag Part Number - 481978
3.2 ELECTRICAL
Battery ....................................................................................... 12 Volt
Charging System........................................................................ Alternator
Charging Output ........................................................................ 12 Volt, 15 Amp
System Polarity .......................................................................... Negative Ground
Starter ......................................................................................... 12 Volt Electric Solenoid Shift Type
Interlock Switches...................................................................... Seat, Neutral Control, Mower Engagement (BBC), Hopper and
Parking Brake
Instrument Panel ........................................................................ Ammeter, Hourmeter, Key Switch, Throttle Lever, Manual Choke,
BBC Switch, and Fuses
Fuses ......................................................................................... Two (2) 20 Amp
3.3 TRACTOR
Drive System.............................................................................. Hydraulic Drive with Two Variable Displacement Pumps and Two
Cast-iron High Torque Motors
Hydrostatic Pumps .................................................................... Two Hydro-Gear ä BDP 10L Pumps with Dump Valves for
movement without running the engine
Drive Wheel Motors .................................................................. Two Ross Model MB 15cu. inch Cast-iron High Torque Motors
Steering/Travel Control.............................................................. Twin Lever Fingertip Steering Control with Individual Control to
Each Wheel
Parking Brake ............................................................................ Lever Actuated Linkage to Brakes on Both Drive Wheel Axles
Wheels:
(2) Front Caster ...................................................................... 11 x 4.0-5 Smooth Tires
(2 ) Dr ive ................................................................................. 23 x 9.5-12 Four-Ply Pneumatic Tubeless, Radius Edge
(1) Rear .................................................................................
Fuel Tank ................................................................................... Two, 3.75 gallon Polyethylene Tanks with Large Fuel Tank filler
neck and Fuel Gauge Fill Caps
Tire Pressure:
Front Caster .......................................................................... 25 PSI
Drive ..................................................................................... 12 PSI
Rear ....................................................................................... 25 PSI
Seat ............................................................................................ Padded
6
Section 3
3.3 TRACTOR (CONT'D)
Travel Speed:
Forward ................................................................................. 0 - 8.5 MPH
Reverse .................................................................................. 0 - 5.0 MPH
3.4 CUTTER DECK
No. of Blades ............................................................................. 3
Width of Cut .............................................................................. 48"
Cutter Blades ............................................................................. Three (3) 16-1/2" (P/N 481997) Marbane Blades
Deck Drive ................................................................................. Belt Driven Electric Clutch Connected to a Drive Shaft to a
Gearbox on the Cutter Deck
Electric Clutch Type ................................................................... Ogura Electric Clutch
Cutting Height Adjustment ........................................................ Four Corner Pin Adjustment, 1.5" to 5" in 1/2" increments
Deck Tilt .................................................................................... Manually by Lifting Deck and Engaging Lock Pin
Drive Shaft................................................................................. Quick-Disconnect Shaft With Two High Speed U-Joints
-NOTE-
The machine will travel at 8.5 mph for
transport purposes. For best cutting
performance the forward travel speed
should be adjusted depending upon the
cutting conditions.
3.5 GRASS CATCHING SYSTEM
Type ........................................................................................... Out-Front Rear Deck Discharge into Blower which discharges
the Grass Clippings into a Hopper
Hopper ....................................................................................... 90-Gallon Molded Plastic with Osillating Discharge Chute
Discharge Blower ...................................................................... 12" Diameter
Side Discharge ........................................................................... Extra Wide Discharge Opening on the Left Hand Side with Spring
Loaded Discharge Chute
3.6 HYDRAULIC SYSTEM
Hydraulic Oil Filter ................................................................... 10 Micron Spin-on Element Type
Hydraulic Reservoir ................................................................... Nylon; 6 Quart Capacity
3.7 WEIGHTS AND DIMENSIONS
Length ........................................................................................ 95.0"
Tracking Width .......................................................................... 42.0"
Overall Width ............................................................................ 48.0"
Overall Height ........................................................................... 44.0"
Operating Weight ....................................................................... 1160 lbs.
3.8 PRODUCTIVITY
The following chart will aid you in determining how many acres your Scag mower will cut per day.
The chart is an estimate based on 8 hours per day cutting time at 4 MPH with an allowance for overlap and turns.
Cutting Width: 48"
Acres Per Day: 21
7
OPERATING INSTRUCTIONS
CAUTION:
Do not attempt to operate this mower unless you
have read this manual. Learn the location and
purpose of all controls and instruments before you
operate this mower.
Section 4
1. Ignition Switch (Figure 4-1). Used to start the
engine and has three positions; OFF, ON, and
START.
2. Mower Deck Switch (Figure 4-1). Used to engage
and disengage the mower drive system. Pulling up on
the switch will engage the deck drive. Pushing down
on the switch will disengage the deck drive.
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.
Left Steering
Control
Cutter Deck
Lift Lock
Engine
Choke Control
Ammeter
Mower Deck
Switch
Hour Meter
Engine
Throttle Control
3. Engine Choke Control (Figure 4-1). Used to start
a cold engine.
4. Engine Throttle Control (Figure 4-1). Used to
control the engine speed. Pushing the lever forward
increases engine speed. Pulling the lever back
decreases engine speed. Full back position is the
IDLE position. Full forward is the cutting position.
Right Steering
Control
Park Brake
Control
Forward Speed
Control
Ignition Switch
Fuses
Left Fuel
Gauge
Right Fuel
Gauge
SCR 2K C&I
Figure 4-1 Controls and Instruments
8
Section 4
5. Ammeter (Figure 4-1). Indicates the condition of
the charging system. When the engine is running
the needle should be at the positive end of the meter.
If the needle is on the negative end of the meter, this
indicates a discharge condition and the machine
should be taken in for service.
6. Hour Meter (Figure 4-1). Indicates the number
of hours the engine has been operated. It operates
whenever the ignition switch key is in the ON
position. It can be used to keep track of
maintenance intervals and the amount of time
required to perform various tasks.
7. Fuse Holders (Figure 4-1). Two 20-amp fuses
protect the mowers electrical system. To replace
fuses, pull fuse out of the socket and install a new
fuse.
8. Left Steering Control (Figure 4-1). Used to
control the mower's left wheel when traveling
forward or reverse.
Left
Dump
Valve
Figure 4-2 Dump Valves Location
Right
Dump
Valve
SCR 2K DVL
13 . Blower Belt Release (Figure 4-3). This lever is
used to release the belt tension and allow the blower
belt to be removed when the cutter deck is setup as
either a mulching or a side discharge deck.
9. Right Steering Control (Figure 4-1). Used to
control the mower's right wheel when traveling
forward or reverse.
10. Parking Brake Control (Figure 4-1). Used to
engage and disengage the parking brakes and also
used to lock the cutter deck from tilting up to high
while traveling. Pull the lever back and lock in place
to engage the parking brakes. Push the lever
forward to disengage the parking brakes and engage
the deck tilt lock.
11. Fuel Tank Gauges (Figure 4-1). Indicates the
amount of fuel in the fuel tanks.
12. Dump Valve Control Levers (Figure 4-2).
Located under the seat, on the hydraulic pumps,
used to free-wheel the mower. Rotating the levers
clockwise until they stop allows the unit to move
under hydraulic power. The levers must be in this
position during operation of the mower. Rotating
the levers counterclockwise, one turn, allows the
mower to be moved by hand (free-wheeling).
Blower Belt
Blower Belt
Release Pedal
SCR 2K BBR
Figure 4-3 Blower Belt Release
4.2 SAFETY INTERLOCK SYSTEM
The mower is equipped with a safety interlock system
that prevents the engine from starting unless the deck
drive is disengaged and the speed control is in neutral and
the parking brake is engaged. The interlock system shuts
off the engine if the operator leaves the seat with the
speed control in the neutral position and the parking
brake is not engaged and/or the cutter blades are
engaged. It will also shut the engine off if the cutter
deck drive is engaged and the hopper is raised.
9
WARNING:
Section 4
3. If the engine is cold, adjust the engine choke as
needed.
Never operate the mower with the interlock
system disconnected or malfunctioning. Do not
disengage or bypass any switch; injury to
yourself and others or property damage could
result.
4.3 INITIAL RUN-IN PROCEDURES (First
Day of Use or Approximately 10 Hours)
1. Check all belts for proper alignment and wear after
the initial 2, 4, and 8 hours of operation. The belt
systems are self adjusting therefore tension
adjustment is not necessary.
2. Change the engine oil and oil filter after the first 5
hours of operation. (See Section 7.4.)
3. Check hydraulic oil level in reservoir. (See Section
7.3.)
4. Check for loose hardware. Tighten as needed.
5. Check interlock system for proper operation. (See
Section 4.2.)
4. Adjust engine throttle control to about half engine
speed.
5. Turn the ignition key to the 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 prevent
overheating of the starter motor. Prolonged cranking
can damage the starter motor and shorten battery
life.
6. Allow engine to warm before operating the mower.
4.5 GROUND TRAVEL AND STEERING
-IMPORTANT-
If you are not familiar with the operation of a
machine with lever steering and/or hydrostatic
transmissions, the steering and ground speed
operations should be learned and practiced in
an open area, away from buildings, fences, or
obstructions. Practice until you are comfortable
with the handling of the machine before
attempting to mow. Learn the operation on flat
ground before operating on slopes.
6. Check tire pressure. Inflate tires if necessary.
4.4 ST ARTING THE ENGINE
CAUTION:
DO NOT USE STARTING FLUIDS. Use of starting
fluids in the air intake system may be potentially
explosive or cause a “runaway” engine condition
that could result in engine damage and/or personal
injury.
1. Be sure the fuel shutoff valve, located on top of the
left fuel tank, is completely open. (See Section 7.4)
2. Sit in the operators seat and place the speed control
in the neutral position and engage the parking brake.
-IMPORTANT-
Start practice with a slow engine speed and slow
forward travel.
Do not push the steering control levers forward
when traveling forward. They are only used to
steer the mower and to travel in reverse by pulling
back on the levers.
Learn to operate the mower with the left hand on
the steering levers and the right hand on speed
control as shown in Figure 4-4. Using both hands
on the steering levers often causes overcontrol.
Learn to feather the steering controls to obtain a
smooth operating action. Jerky movements tend
to place extreme force on the drive pumps and
axles, as well as damage the lawns.
Practice operating the mower until you can make
it go exactly where you are aiming.
10
Section 4
In case of an emergency, such as loss of control,
stop the mowers movement by quickly pulling the
forward speed control lever to the neutral position.
Forward Tr avel
-NOTE-
Use one hand on both steering levers as shown in
Figure 4-4 to minimize overcontrol.
To travel forward with the mower, move the speed control
lever forward. Do not push the steering control levers
forward as they are used only for steering the mower left
or right. When the speed control is moved forward, the
mower will travel forward at the speed the control lever is
set at. To increase the speed, push the control lever forward
and to decrease the speed, pull the control lever back. It is
not necessary to hold the speed control in position, since a
friction system holds the lever in position.
To stop the forward travel, pull the speed control lever
back to the neutral position.
To steer the mower left while traveling forward, pull the
left steering lever back. The further the lever is pulled
back, the sharper the mower will turn left.
To steer the mower right while traveling forward, pull the
right steering control lever back. The further the lever is
pulled back, the sharper the mower will turn right.
-NOTE-
Smooth operation of the steering levers will
produce a smooth mower operation. While
learning the operation of the steering controls,
keep the travel speed low.
-IMPORTANT-
Do not travel forward over a curb. The mower
will hang up on the curb. Tilt the deck and
travel backwards over the curb at a 45 degree
angle. (See section 4.15 for cutter deck tilting
instructions)
Reverse Travel
Figure 4-4 Hands On Controls
SCR 2K HOC
CAUTION:
Before backing up, observe the rear for persons
and obstructions. Clear the area before backing up.
Possible injury or property damage could occur.
CAUTION:
Disengage power to the mower before backing up.
Do not mow in reverse unless absolutely necessary
and then only after observation of the entire area
behind the mower.
To travel in reverse, pull both handles all the way back.
Keep the travel speed low while traveling in reverse.
-NOTE-
The mower will not travel straight in reverse.
Slight adjustments must be made using the
steering controls.
11
Section 4
To steer left while traveling in reverse, allow the left
steering control lever to move forward. The further the
control is allowed to move forward, the sharper the
mower will turn left.
To steer right while traveling in reverse, allow the right
steering control lever to move forward. The further the
control is allowed to move forward, the sharper the
mower will turn right.
To stop the reverse travel, place the speed control lever
in the neutral position and allow the steering control
levers to return to the neutral position. If the mower is
to be parked, engage the parking brake and remove the
ignition key.
4.6 ENGAGING THE DECK DRIVE (CUTTER
BLADES)
1. Set the throttle at about 3/4 speed. Do not attempt to
engage the deck drive at high speed as this shortens
the electric clutch life use only moderate engine
speed when engaging the deck drive.
2. Engage the deck drive by pulling out on the yellow
switch, located on the instrument panel, (Figure 4-6)
to the engage position.
3. To disengage the deck drive, push the switch in to
the disengage position.
4. Always operate the engine at full throttle to properly
maintain cutting performance. If the engine starts to
lug down, reduce the forward speed and allow the
engine to operate at maximum RPM.
4.7 HILLSIDE OPERATION
WARNING:
T o 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. A void 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 reduces
traction and steering control.
2. To inhibit tipping or loss of control, do not start or
stop suddenly, avoid unnecessary turns and travel at
reduced speed.
PULL UP TO ENGAGE
PUSH DOWN TO DISENGAGE
STT99CES
Figure 4-5 Cutter Engage Switch
-NOTE-
A squealing noise may be heard when
engaging or disengaging the deck drive. It is
caused by the electric clutch plates meshing
as the mower comes up to speed. This is a
normal condition.
3. Keep tires properly inflated.
4. Always travel up or down the slope, whenever
possible; NEVER across the slope. (See Figures 4-6
and 4-7.)
SCR 2K POS
Figure 4-6 Proper Operation on a Slope
12
Section 4
Figure 4-7 Improper Operation on a Slope
4.8 P ARKING THE MOWER
SCR 2K IOS
4. Fill the fuel tank with fresh, clean fuel at the end of
every day of operation.
5. Check the tire pressure. Inflate tires if necessary.
4.10 HOPPER, MULCH or SIDE DISCHARGE
OPERA TION
When mowing with the cutting deck setup for rear discharge
into the hopper, the blower belt must be installed. A control
lever located on the left side of the tractor (Figure 4-8) will
release tension on the idler pulley to allow the belt to be
installed (grass catching operation) or removed (mulching
or side discharge operations). The cutter deck must also
be adapted to the type of cutting that the operator is
attempting to perform.
1. Place the speed control in the neutral position.
2. Slow the engine to idle speed.
3. Engage the parking brake.
4. Turn the ignition key to the OFF position and remove
the key.
4.9 AFTER OPERATION
1. Wash the entire mower after each use. Do not use
high pressure spray or direct the spray onto electrical
components.
-IMPORTANT-
Do not wash a hot or running engine. Cold
water will damage the engine. Use compressed
air to clean the engine if it is hot.
Blower Belt
Blower Belt
Release Pedal
SCR 2K BBR
Figure 4-8 Blower Belt Release
Rear Discharge
Baffle
2. Keep the entire mower clean to inhibit serious heat
damage to the engine or hydraulic oil circuit.
3. Check the drive belts for proper alignment, correct if
necessary. Remove any debris build up.
SCR 2K RD
Side Discharge
Shutoff Baffle
Figure 4-9 Baffles for Rear Discharge
13
Grass Catching Operation
CAUTION:
Never leave grass clippings in the hopper after
mowing. Wet or damp clippings will generate heat
as they decompose which may cause spontaneous
combustion to occur.
1. With the hopper lowered, engage the deck drive. When
the deck drive is engaged, the grass delivery spout,
which is designed to distribute the grass clippings
through the inside of the hopper, will begin to oscillate.
If the spout does not oscillate, do not use the grass
catcher. Use the side discharge and then have the
oscillating spout system repaired.
Section 4
Lock Pin and
Latch Plate
SCR 2K TGO
-NOTE-
The mower has an interlock switch that will
prevent the mower from starting if the hopper is
in the raised position. This interlock switch will
also shut the engine off if the hopper is raised
while the engine is running and the deck drive is
engaged.
2. Proceed to mow the lawn until the hopper is full. If
your mower is not equipped with the optional
hopper fill alarm to tell you when the hopper is full,
check the hopper frequently when first using the
grass catcher. After operating with the grass catcher
for awhile, experience will tell you when the hopper
is full.
4. When dumping the hopper into a disposal area:
A. Disengage the deck drive.
WARNING:
Never operate the grass catcher with the
hopper back door open. Objects can be
thrown out the spout of the hopper with a
force that can cause injury to bystanders or
property damage.
Figure 4-10 T ailgate Operation
B. Raise the tailgate until the lock pin on top of the
hopper engages with the latch on the tailgate
(Figure 4-10).
Grasp Here
Hopper Latch
Hopper Prop Rod
SCR 2K RTH
Figure 4-11 Raising The Hopper
C. Stand off to side of the hopper. Unhook the
hopper latch and raise the hopper by placing a
hand in the hand hole at either bottom front side
of the hopper (Figure 4-11) and then carefully lift
the hopper until it is in its upright position. Rotate
the hopper prop rod upward until it contacts the
hopper frame. This will prevent the hopper from
moving until the hopper is emptied.
D. Rotate the hopper prop rod downward, carefully
lower the hopper and hook the hopper latch.
14
Section 4
Rear Discharge
Shutoff Baffle
Side Discharge
Shutoff Baffle
SCR 2K BMD
E. Release the latch holding the tailgate and then
lower the tailgate.
Side Discharge Operation
CAUTION:
The side discharge deck can throw objects with great
force. Do not stand in front of discharge chute when
the cutter deck is engaged. Keep bystanders clear
from the area while mowing.
When mowing, never discharge toward bystanders or
buildings. Do not allow anyone near the machine while
in operation.
Rear Dicharge
Shutoff Baffle
Mulching Operation
Figure 4-13 Baffles for Mulching
1. Place the proper baffles in the cutter deck for
mulching operation (Figure 4-13).
2. Release the tension from the blower belt and remove
the blower belt. (Figure 4-8).
Side Discharge
Chute
Figure 4-12 Baffles for Side Discharge
SCR 2K BSD
1. Place the proper baffles in the cutter deck and install
the side discharge chute (Figure 4-12).
2. Release the tension from the blower belt and remove
the blower belt. (Figure 4-8).
3. Engage the deck drive.
3. Engage the deck drive.
4. Proceed to mow the lawn.
4.11 REMOVING CLOGGED MATERIAL
ROTATING BLOWER BLADES
NEVER PUT YOUR HANDS INTO THE BLOWER DISCHARGE CHUTE FOR ANY REASON! Shut off the
engine and remove the key and only then use a stick
or similar object to remove material if clogging has
occurred.
1. If either blower discharge chute becomes clogged,
shut off the engine and remove the ignition key.
Using a stick or similar item, dislodge the clogged
material. Then resume normal mowing.
4. Proceed to mow the lawn.
15
Section 4
4.12 MOVING MOWER WITH ENGINE
STOPPED
To free-wheel or move the mower around without the
engine running, place the dump valve handle in the
FREE-WHEEL position (Figure 4-2). Disengage the
parking brake and move the mower by hand. The lever
must be returned to the DRIVE position to drive the
mower.
4.13 RECOMMENDA TIONS FOR MOWING
1. Do not mow with dull blades. A dull blade will tear
grass, resulting in poor lawn appearance and
requiring extra power.
2. Direct the side discharge away from sidewalks or
streets to minimize cleanup of clippings. When
mowing close to obstacles, direct the discharge away
from the obstacles to reduce the chance of property
damage by thrown objects.
4.14 ADJUSTING CUTTING HEIGHT
The mower deck can be adjusted from a height of 1 1/2inches to 5-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.
1. Shut off the engine and remove the ignition key.
Remove
Hair Pins
3. Cut grass when it is dry and not too tall. Do not cut
grass too short (cut off 1/3 or less of existing grass
for best appearance). Mow frequently.
4. Keep mower and discharge system clean.
5. When mowing wet or tall grass, mow the grass
twice. Raise the mower to the highest setting for the
first pass and then make a second pass to the desired
height.
6. Use a slow travel speed for trimming purposes.
7. Operate the engine at or near full throttle for best
cutting. Mowing with a lower RPM causes the
mower to tear the grass. The engine is designed to
be operated at full speed.
8. Use the alternate stripe pattern for best lawn
appearance. Vary the direction of the stripe each
time the grass is mowed to avoid wear patterns in
the grass.
Deck Height
Adjustment Pin
Figure 4-14 Deck Height Adjustment
2. Remove the two hairpins from the adjusting pins on
one side of the cutter deck (Figure 4-14).
3. Lift or lower the deck to the desired cutting height and
install the hairpins. A deck height decal is located on
the deck as an aid in adjusting the deck to the desired
height.
4. Repeat the above process on the other side of the cutter
deck.
SCR 2K DHA
16
Section 4
4.15 TIL TING THE CUTTER DECK
WARNING:
Do not tilt the mower deck with the mower blades
rotating. Shut off the engine and remove the ignition
key. Bodily injury could occur from the rotating
blades.
The mower deck can be tilted up for trailering, blade
replacement, etc. To tilt the deck up:
1. Shut off the engine, remove the ignition key and
engage the park brake.
Deck Locking
Pin
SCR 2K DLP
Figure 4-15 Deck Locking Pin
2. Lift up on the caster wheel arm until the lock pin
engages into the lock pin hole (Figure 4-15).
Locking Pin
Hole
3. To release the deck and lower it to its operating
position:
A. Lift up on the caster wheel arm while pulling up
on the lock pin.
B. Carefully lower the deck to the ground.
17
TROUBLESHOOTING CUTTING CONDITIONS
Section 5
CONDITION
CAUSE
CURE
Stringers - Occasional Low engine RPM Run engine at full RPM
Blades of Uncut
Grass Ground speed too fast Slow speed to adjust for conditions
Wet grass Cut grass after it has dried out
Dull blades, incorrect sharpening Sharpen blades
Deck plugged, grass accumulation Clean underside of deck
Width of Deck
SGB020
Belts slipping Adjust belt tension
Streaking - Strips of Dull, worn blades Sharpen blades
Uncut Grass in Cutting
Path Incorrect blade sharpening Sharpen blades
Low engine RPM Run engine at full RPM
Belt slipping Adjust belt tension
Deck plugged, grass accumulation Clean underside of deck
Ground speed too fast Slow speed to adjust for conditions
Wet grass Cut grass after it has dried out
Width of Deck
SGB018
Bent blades Replace blades
Streaking - Strips of Not enough overlapping Increase the overlap of each
Uncut Grass Between between rows pass
Cutting Paths
Width
of
Deck
SGB019
Width
of
Deck
18
Section 5
TROUBLESHOOTING (CONT'D)
CONDITION
CAUSE
CURE
Uneven Cut on Flat Lift worn from blade Replace blade
Ground - Wavy
High-Low Blade upside down Mount with cutting edge toward
Appearance, ground
Scalloped Cut, or
Rough Contour Deck plugged, grass accumulation Clean underside of deck
Too much blade angle (deck pitch) Adjust pitch and level
Deck mounted improperly See your authorized SCAG dealer
Bent spindle area See your authorized SCAG dealer
Dull blade Sharpen blade
Width of Deck
SGB020
Uneven Cut on Uneven ground May 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 Across Tire pressures not equal Check and adjust tire pressure
Width of Cutting Path
Wheels uneven Check and adjust tire pressure
Deck mounted incorrectly See your authorized SCAG dealer
Deck not level side-to side Check for level and correct
Width of Deck
SGB023
19
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