Scag Power Equipment 70001, 79999 User manual

FROM SERIAL NUMBER 70001 TO 79999
OPERATOR'S MANUAL
PART 03035
TURF RUNNER
MODEL STR

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.
WARNING
This manual covers the operating instructions
and illustrated parts list for:
STR-20CH with a se ial numbe of 27070001-27079999
STR-22CH with a se ial numbe of 27170001-27179999
Always use the entire serial number listed on the serial number
tag when referring to this product.

FROM SERIAL NUMBER 60001 TO 69999
OPERATOR'S MANUAL
PART 03028
TURF RUNNER
MODEL STR

FAILURE TO FOLLOW SAFE OPERATING PRACTICES
MAY RESULT IN SERIOUS INJURY.
* Keepallshieldsinplace,especially thegrassdischargechute.
* Beforeperforminganymaintenance or service,stopthemachineand
remove the spark plug wire and ignition key.
* Ifamechanismbecomesclogged, stop the enginebeforecleaning.
* Keephands,feetand clothing awayfrompower-drivenparts.
* Readthismanual completely aswellasother manualsthatcame
withyourmower.
* Keepothersoffthetractor (only one personatatime).
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.
WARNING
Thismanualcoverstheoperatinginstructions
andillustratedparts list for:
STR-20CH with a serial number of 21660001-21669999
STR-22CH with a serial number of 21760001-21769999
Alwaysusethe entire serialnumberlistedon theserialnumber
tagwhenreferring tothisproduct.

I
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 ....................................................................................................... 10
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 ................................................................................................................ 13
4-8 Parking the Mower............................................................................................................... 13
4.9 After Operation .................................................................................................................... 13
4.10 Hopper/Side Discharge Operation ....................................................................................... 14
4.11 Removing Clogged Material ................................................................................................ 15
4.12 Moving Mower with Engine Stopped .................................................................................. 16
4.13 RecommendationsforMowing ............................................................................................ 16
4.14 Adjusting Cutting Height ..................................................................................................... 17
4.15 Tilting the Cutter Deck......................................................................................................... 17
4.16 Removing the Cutter Deck ................................................................................................... 17
Section 5 - Troubleshooting Cutting Conditions.............................................................20-22

II
TABLE OF CONTENTS (CONT'D)
SUBJECT PAGE
Section 6 - Adjustments
6.1 Parking Brake Adjustment ................................................................................................... 23
6.2 Travel Adjustments .............................................................................................................. 24
6.3 Throttle Control and Choke Adjustments............................................................................. 28
6.4 EngineBeltAdjustment .......................................................................................................28
6.5 Blower Drive Belt Adjustment ............................................................................................. 28
6.6 Transmission Drive Belt Adjustment ................................................................................... 28
6.7 Belt Alignment ..................................................................................................................... 28
Section 7 - Maintenance
7.1 Maintenance Chart ............................................................................................................... 29
7.2 Lubrication........................................................................................................................... 30
7.3 Hydraulic System ................................................................................................................. 32
7.4 EngineOil ............................................................................................................................ 33
7.5 Engine Fuel System..........................................................................................................34
7.6 Engine Air Cleaner............................................................................................................... 34
7.7 Battery ................................................................................................................................. 35
7.8 Drive Belts ........................................................................................................................... 36
7.9 Cutter Blades ....................................................................................................................... 37
7.10 Tires ..................................................................................................................................... 38
7.11 Hopper ................................................................................................................................. 39
7.12 Transmission Gearbox ......................................................................................................... 39
7.13 Cutter Deck Gearboxes ........................................................................................................ 39
7.14 Body, Deck, Hopper and Upholstery.................................................................................... 41
Section 8 - Replacement Parts
Cutter Deck.................................................................................................................................... 42
Sheet Metal .................................................................................................................................... 44
Blower Assembly ........................................................................................................................... 46
Engine and Attaching Parts ........................................................................................................... 48
Traction Drive................................................................................................................................ 50
Hydraulic Pump ............................................................................................................................. 52
Hydro-Gear Axle Assembly........................................................................................................... 54
Drive Gearbox ............................................................................................................................... 56
DeckDrive..................................................................................................................................... 58
Speed and Steering Controls .......................................................................................................... 60
Parking Brake and Dump Valve Linkages ..................................................................................... 62
Hydraulic Components and Lines ..................................................................................................64
Electrical System ........................................................................................................................... 66
Hopper ........................................................................................................................................... 68
Hopper Actuator Mechanism......................................................................................................... 70
Decals ............................................................................................................................................ 72
Electrical Schematic ...................................................................................................................... 74

Section 1
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.
When ordering parts, always give the model and serial
number of your tractor and cutting deck. The serial plates
are located where shown in Figures 1-1 and 1-2.
For pictorial clarity, some illustrations and figures in this
manualmay showshields,guardsorplates openor removed.
Under no circumstances should your mower be operated
without these devices in place.
Allinformation isbased uponproductinformation 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” ofthe machine
arereferenced fromthe operator’sright andleft whenseated
in the normal operating position and facing the
forward travel direction.
1.3 SERVICINGTHE ENGINE AND DRIVE
TRAIN COMPONENTS
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. Forserviceofthesecomponentsduringthelimited
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.
Figure 1-1 Mower Deck Serial Plate Location Figure 1-2 Tractor Serial Plate Location
Serial Plate
Serial Plate

2
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.
Hazardcontroland accidentprevention are dependentupon
the awareness, concern, prudence, and proper training of
the personnel involved in the operation, transport,
maintenanceand storageof theequipment. Make sureevery
operator is properly trained and thoroughly familiar with
all of the controls before operating the mower.
READ THIS OPERATOR’S MANUAL BEFORE
ATTEMPTING TO START YOUR MOWER.
A replacement manual is available from your authorized
Scag Service Dealer or by Contacting Scag Power
Equipment,ServiceDepartment 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.
2.2 SIGNAL WORDS
This symbol means “Attention! Become Alert! Your
Safetyis Involved!" The symbolis usedwith 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
informationabout safety. To avoidinjury andpossible death,
carefully read the message! Be sure to fully understand
the causes of possible injury or death.
SignalWord:
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.
The signal word “DANGER” denotes that an extremely
hazardoussituationexists on ornear the machinethat could
result in high probability of death or irreparable injury if
proper precautions are not taken.
CAUTION:
The signal word “CAUTION” is a reminder of safety
practiceson ornear themachinethat couldresult inpersonal
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.
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. DONOTmowwhen childrenand/or othersare 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
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.
WARNING:
Section 2

3
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. Keepallshields and safetydevicesin place.
If a shield, safety device or decal is defective or
damaged, repair or replace it before operating the
machine.
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
allhydraulichosesandlinesareingood conditionbefore
starting 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. 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. 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
theengine.
10. DO NOT add fuel to a running or hot engine. An
explosioncould occur. Allow engineto coolfor several
minutes before adding fuel.
11.Keep flammableobjects (cigarettes,matches, etc.),open
flames and sparks away from fthe uel tank and fuel
container.
12. Equipment must comply with the latest requirements
per ANSI J137 and/or ANSI S279 when driven on
public roads.
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 UP
HILL OR DOWN HILL, MOW UP AND DOWN
THEFACE OF SLOPES, NEVER ACROSSTHE
FACE.
4. When using any attachment,never direct the discharge
of material toward bystanders or allow anyone near
the machine while in operation.
5. Before attempting to startthe engine, disengage power
to the cutter deck 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.
Section 2

4
7. Be alert for holes, rocks, and roots in the terrain and
other hidden hazards. Keep away from any dropoff.
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.
9. DO NOT turn sharply. Use care when backing up.
10. Watchfor trafficwhen crossingroadsor operating near
roadways.
11. Mow only in daylight or good artificial light.
12. Take allpossible precautionswhen leaving themachine
unattended, such as disengaging the mower, lowering
theattachments,setting the parkingbrake, stopping the
engine, and removing the key.
13. Disengagepower to theattachments 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.
15. DO NOT touch the engine or the muffler while the
engineisrunning or immediatelyafter stopping. These
areas may be hot enough to cause a burn.
16. DONOTrunengine inside a buildingor confined area
without proper ventilation. Exhaust fumes are
hazardaous and could cause death.
2.5 MAINTENANCE CONSIDERATIONS
1. Nevermakeadjustmentsto themachine withthe 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. Donotchange theenginegovernorsettingsor overspeed
theengine.
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
hydraulicfluid underhigh pressure. Useonly cardboard
or paper to search for leaks.
7. Hydraulicfluidunderhigh pressuremay havesufficient
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.
Section 2

5
Section 2
2.6 SAFETY AND INSTRUCTIONAL DECALS
DANGER
SPINNING BLADE
KEEP CLEAR
CONTACT CAN INJURE
48071
ROTATING BLADES AND BELTS
WARNING
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
CAUTION
BEFORE OPERATING
READ OPERATORS
MANUAL AND SAFETY
INSTRUCTIONS
KEEP BYSTANDERS AWAY
CAUTION
WARNING
INSTALL BELT COVER BEFORE
OPERATING MACHINE
READ OPERATOR'S MANUAL
481039

6
SPECIFICATIONS
3.1 ENGINE
General Type ............................................................................. Heavy Duty Industrial/Commercial Gasoline
Brand ......................................................................................... Kohler
Model ......................................................................................... Command
Horsepower ................................................................................ 20 HP at 3600 RPM (Scag Model STR48-20CH)
22 HP at 3600 RPM (Scag Model STR48-22CH)
Type ........................................................................................... 4 Cycle Gasoline, Twin Cylinder, Horizontal Shaft
Displacement ............................................................................. 624 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 97
Oil Pump Group: ....................................................................... Positive Displacement Gerotor™ Oil Pump with Remote Oil
Filter
Starter ........................................................................................ Electric Starting with Cell Starter
Belts:
Engine Belt............................................................................ Scag Part Number - 481235
Blower Drive Belt ................................................................ Scag Part Number - 481234
Left Pump Drive Belt ........................................................... Scag Part Number - 481236
Right Hand Drive Belt .......................................................... Scag Part Number - 481237
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 ..................................................................... Seat, Neutral Control, Mower Engagement (BBC), and Hopper
Instrument Panel ....................................................................... Ammeter, Hourmeter, Key Switch, Throttle Lever, Manual Choke,
BBC Switch, and Fuses
Fuses .......................................................................................... Two (2) 30 Amp
3.3 TRACTOR
Drive System ............................................................................. Hydraulic Drive with Two Hydrostatic Transmissions For
Independent Control of Each Drive Wheel
Hydrostatic Transmissions ........................................................ Two Hydro-Gear™ Transmissions with Integral Pump/Motor
with Axle
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....................................................................9 x 3.5 Smooth Tires
(2) Drive ............................................................................... 20 x 10.8 Four-Ply Pneumatic Tubeless, Radius Edge
(1) Rear ................................................................................
Fuel Tank ................................................................................... 5-Gallon Seamless Polyethylene Tank with Fuel Gauge Fill Cap
Tire Pressure:
Front Caster.......................................................................... 25 PSI
Drive..................................................................................... 15 PSI
Rear ...................................................................................... 15 PSI
Seat ............................................................................................ Padded
Section 3

7
3.3 TRACTOR (CONT'D)
Travel Speed:
Forward ................................................................................ 0 - 7.5 MPH
Reverse ................................................................................. 0 - 3.5 MPH
3.4 CUTTER DECK
No. of Blades ............................................................................. 2
Width of Cut .............................................................................. 48"
Cutter Blades .............................................................................Two (2) 24-3/4" Blades, 1/4" thick, milled edge, 5150 Alloy Steel
Deck Drive.................................................................................Belt Driven Electric Clutch Connected to a Drive Shaft to a
Gearbox Arrangement on the Cutter Deck
Electric Clutch Type.................................................................. Warner “Mag Stop” Electric Clutch
Cutting Height Adjustment ....................................................... Four Corner Pin Adjustment, 1" to 4-1/2" in 1/2" increments
Deck Tilt.................................................................................... Manually by Lifting Deck and Engaging Two Prop Rods
Drive Shaft ................................................................................ Quick-Disconnect Shaft With Two High Speed U-Joints
3.5 GRASS CATCHING SYSTEM
Type ........................................................................................... Out-Front Rear Deck Discharge into Blower which Discharges
the Grass Clippings Either into a Hopper or is Side-Discharged
out to the Lawn
Hopper ....................................................................................... 6-Gallon Molded Plastic with Osolating Discharge Chute
Discharge Blower ...................................................................... 12" Diameter
Side Discharge........................................................................... Integral with System. Lever Switches Blower Output to Either
Side Discharge or Hopper Discharge
3.6 HYDRAULIC SYSTEM
Hydraulic Oil Filter ................................................................... 10 Micron Spin-on Element Type
Hydraulic Reservoir...................................................................High Density Polyethylene; _____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.
Section 3

8
Section 4
OPERATING INSTRUCTIONS
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.
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.
CAUTION:
1. Ignition Switch (Figure 4-1). The ignition switch is
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 the
switch lever up and then pushing the switch lever
forward will engage the deck drive. Pulling the
switch lever back will disengage the deck drive.
3. Engine Choke Control (Figure 4-1). Used to start a
coldengine.
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.
Figure 4-1 Controls and Instruments
CAUTION
BEFOREOPERATING
READOPERATORS
MANUALAND SAFETY
INSTRUCTIONS
KEEPBYSTANDERS AWAY
CAUTION
CHOKE
481348
aljalefjairjf;o3rf
afkrjf ;wsorgf
aljalefjairjf;o3rf
aljalefjairjf;o3rf
OFF
OFF
OFF
PULL UP AND PUSH
FORWARD TO ENGAGE
MOWER DECK ON
ON
START
PULL BACK
TO DISENGAGE
OFF
481239
MOWER DECK OFF
Left Steering Control Right Steering Control
Parking Brake Control
Speed Control
Mower Deck Switch
Ignition Switch
Hourmeter
Voltmeter
EngineThrottle
Control
Engine
Choke
Control
Fuel Gauge
Fuses

9
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. Hourmeter (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 mower’s 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.
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. Pull the
lever back and lock in place to engage the parking
brakes. Pull the lever back and move to the left to
disengage the parking brakes.
11. Fuel Tank Gauge (Figure 4-1 & 4-4). Indicates the
amount of fuel in the fuel tank.
12. Dump Valve Control (Figure 4-2). Located under
the seat, is used to “free-wheel” the mower. Pulling
the lever back and locking in place allows the unit to
move under hydraulic power. The lever must be in
this position during operation of the mower. Pushing
the lever forward and locking in place allows the
mower to be moved by hand (free-wheeling).
Figure 4-4 Seat Lock Lever
DANGER
Dump Valve Handle
Figure 4-2 Dump Valve Control
13. Hopper/Side Discharge Control (Figure 4-3). This
lever is used to select either discharge of grass into
the hopper or through the side discharge chute.
The release lever is used to aid the control lever when
switching the gate between side discharge and hopper
discharge.
Discharge
Control
Lever Release Lever
Figure 4-3 Hopper/Side Discharge Control
14. Seat Lock Lever (Figure 4-4). Used to lock the seat
in the down position.
Seat Latch
Fuel Cap/Gauge

10
Section 4
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.
The interlock system shuts off the engine if the operator
leaves the seat with the speed control not in the neutral
position 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.
4.4 STARTING THE ENGINE
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 under the fuel
tank, is completely open. (See section 7-4.)
2. Sit in the operator’s seat and place the speed control
in the neutral position.
3. Engage the parking brake.
4. If the engine is cold, adjust the engine choke as
needed.
5. Adjust engine throttle control to about half engine
speed.
6. 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.
7. Allow engine to warm before operating the mower.
4.5 GROUNDTRAVEL 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.
CAUTION:
WARNING:
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 tension at 2, 4 and 8 hours.
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.)
6. Check tire pressure. Inflate tires if necessary.

11
Section 4
-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 4-5. 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.
In case of an emergency, such as loss of control,
stop the mower’s movement by quickly pulling
the speed control lever to the neutral position.
Figure 4-5 Hands On Controls
Forward Travel
-NOTE-
Use one hand on both steering levers as shown in
Figure 4-5 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 further 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 further 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)

12
Section 4
Reverse Travel
Before backing up, observe the rear for persons
and obstructions. Clear the area before backing
up. Possible injury or property damage could
occur.
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.
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 further 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 further 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.
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 switch
lever (Figure 4-6) then pushing the switch lever
forward to the engage position.
CAUTION:
CAUTION:
Figure 4-6 Cutter Engage Switch
-NOTE-
If a squealing noise is heard when engaging or
disengaging the deck drive, it is caused by the
electric clutch plates meshing as the mower
comes up to speed.
3. To disengage the deck drive, pull the switch lever
down to the disengage position.
4. Always operate the engine at full throttle to properly
maintain cutting speed. If the engine starts to lug
down, reduce the forward speed and allow the engine
to operate at maximum RPM.
PULL OUT
UP FOR MOWER - ON
DOWN FOR MOWER - OFF

13
Section 4
4.7 HILLSIDE OPERATION
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 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
reducedspeed.
3. Keep tires properly inflated.
4. Always travel up or down the slope, whenever
possible; NEVER across the slope. (See Figures 4-7
and 4-8.)
WARNING:
Figure 4-7 Proper Operation on a Slope
Figure 4-8 Improper Operation on a Slope
4.8 PARKING THE MOWER
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.
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 tension, alignment
and any signs of rubbing. Correct and adjust if
necessary.

14
Section 4
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/SIDE DISCHARGE
OPERATION
A control lever located on the left side of the tractor
selects either hopper discharge or side discharge to the
outside. When the lever is placed in the hopper position
(Figure 4-9), the side discharge is covered and the hopper
discharge is opened. When the lever is placed in the side
discharge position (Figure 4-10), the hopper discharge is
covered and the side discharge is opened.
-NOTE-
If the control lever sticks, push the release lever to
free it.
Grass Catching Operation
Never leave grass clippings in the hopper after
mowing. Wet or damp clippings will generate heat
astheydecompose whichmay cause spontaneous
combustion to occur.
1. Place the hopper/side discharge control lever in the
hopper discharge position (Figure 4-9).
2. 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.
-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.
3. Proceed to mow the lawn until the hopper is full. If
your mower is not equipped with the optional hopper
full 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:
CAUTION:
Figure 4-9 Hopper Operation Position
Figure 4-10 Side Discharge Operation Position
Release Lever in This
Position for Hopper Discharge
Release Lever in This
Position for Side Disharge
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.
A.Disengage the deck drive.