Scag Power Equipment STT User manual

MODEL STT

OPERATOR’S MANUAL

THIS MANUALCONTAINS THE OPERATING

INSTRUCTIONS AND SAFETY INFORMA-

TION FOR YOUR SCAG MOWER. READING

THIS MANUAL CAN PROVIDE YOU WITH

ASSISTANCE IN MAINTENANCE AND AD-

JUSTMENT PROCEDURES TO KEEP YOUR

MOWER PERFORMING TO MAXIMUM EFFI-

CIENCY. THE SPECIFIC MODELS THATTHIS

BOOK COVERS ARE CONTAINED ON THE

INSIDECOVER. BEFORE OPERATINGYOUR

MACHINE, PLEASE READ ALL THE INFOR-

MATION ENCLOSED.

PART NUMBER 03120

FAILURE TO FOLLOW SAFE OPERATING PRACTICES

MAY RESULT IN SERIOUS INJURY.

* Keepall shields inplace, especially thegrass 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:

Alwaysusetheentireserial number listed on the serialnumber

tag when referring to this product.

Thismanualcoverstheoperatinginstructions

andillustratedparts list for:

STT52A-23KA with a serial number of 8480001 to 8489999

STT52A-25CH with a serial number of 8490001 to 8499999

STT52A-27CH with a serial number of 8720001 to 8729999

STT61A-23KA with a serial number of 8500001 to 8509999

STT61A-25CH with a serial number of 8510001 to 8519999

STT61A-27KA with a serial number of 8520001 to 8529999

STT61A-27CH with a serial number of 8730001 to 8739999

STT61A-29KA-DFI with a serial number of 8530001 to 8539999

STT72A-27KA with a serial number of 8540001 to 8549999

STT72A-29KA-DFI with a serial number of 8550001 to 8559999

SMT-52A with a serial number of 8560001 to 8569999

SMT-61A with a serial number of 8570001 to 8579999

SMST-72A with a serial number of 8610001 to 8619999

TABLE OF CONTENTS

SUBJECT PAGE

Section 1 - General Information

1.1 Introduction .............................................................................................................................1

1.2 Directional Reference.............................................................................................................1

1.3 Servicing the Engine and DriveTrain Components ................................................................1

1.3 Symbols ............................................................................................................................... 2-3

Section 2 - Safety Information

2.1 Introduction .............................................................................................................................4

2.2 SignalWords ...........................................................................................................................4

2.3 Considerations Before Operation ...........................................................................................4

2.4 OperationConsiderations........................................................................................................5

2.5 Maintenance Considerations ...................................................................................................6

2.6 Safety and Instructional Decals ..............................................................................................7

Section 3 - Specifications.......................................................................................................8-9

Section 4 - Operating Instructions

4.1 Controls and Instrument Identification ..................................................................................10

4.2 Safety Interlock System........................................................................................................ 11

4.3 Initial Run-In Procedures ......................................................................................................12

4.4 Starting the Engine................................................................................................................12

4.5 Ground Travel and Steering ..................................................................................................12

4.6 Engaging the Deck Drive .....................................................................................................13

4.7 HillsideOperation .................................................................................................................14

4-8 Parking the Mower ...............................................................................................................14

4.9 After Operation ....................................................................................................................14

4.10 Removing Clogged Material .................................................................................................14

4.11 Moving Mower with Engine Stopped ...................................................................................14

4.12 Recommendations for Mowing .............................................................................................15

4.13 Adjusting Cutting Height .......................................................................................................15

4.14 Towing ..................................................................................................................................16

Section 5 -Troubleshooting Cutting Conditions.............................................................17-19

TABLE OF CONTENTS (CONT'D)

SUBJECT PAGE

Section 6 - Adjustments

6.1 Parking Brake Adjustment ....................................................................................................20

6.2 TravelAdjustments ...............................................................................................................20

6.3 Throttle Control and ChokeAdjustments ..............................................................................22

6.4 BeltAdjustment ....................................................................................................................22

6.5 BeltAlignment ......................................................................................................................22

6.6 Cutter Deck Adjustments .....................................................................................................23

Section 7 - Maintenance

7.1 Maintenance Chart ...............................................................................................................26

7.2 LubricationFittingPoints ......................................................................................................27

7.3 Hydraulic System ..................................................................................................................29

7.4 EngineOil .............................................................................................................................30

7.5 Engine Fuel System ..............................................................................................................31

7.6 EngineAir Cleaner................................................................................................................31

7.7 Battery ..................................................................................................................................32

7.8 Drive Belts ............................................................................................................................33

7.9 Cutter Blades ........................................................................................................................33

7.10 Tires ......................................................................................................................................34

7.11 Cutter Deck Gearbox ...........................................................................................................35

7.12 Kawasaki Cooling System ....................................................................................................35

7.13 Body, Deck, Hopper and Upholstery ....................................................................................36

Section 8 - Replacement Parts

Notes ..............................................................................................................................................37

STT52A, STT61A Cutter Deck ............................................................................................... 38-39

STT72A Cutter Deck ............................................................................................................... 40-41

Cutter Deck Controls................................................................................................................ 42-43

Sheet Metal Components.......................................................................................................... 44-45

Deck Drive Components .......................................................................................................... 46-47

Engine and Attaching Parts (Kohler)........................................................................................ 48-49

Engine and Attaching Parts (Kawasaki) .................................................................................. 50-51

Brake and Steering Components .............................................................................................. 52-53

Fuel and Hydraulic System ....................................................................................................... 54-55

Fuel and Hydraulic System (Kawasaki 29DFI) ....................................................................... 56-57

Hydraulic Pump (BDP-16A) .................................................................................................... 58-59

Electrical System (Kohler) ....................................................................................................... 60-61

Electrical System (Kawasaki 23HP & 27HP) ......................................................................... 62-63

Electrical System (Kawasaki 29DFI)....................................................................................... 64-65

Replacement Decals................................................................................................................. 66-67

Electrical Schematic (Kohler) ........................................................................................................68

Electrical Schematic (Kawasaki 23HP & 27) ................................................................................69

Electrical Schematic (Kawasaki 29DFI)........................................................................................70

Warranty Statement............................................................................................. Inside Back Cover

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. The serial number plate is

located where shown in Figure 1-1.

For pictorial clarity, some illustrations and figures in this

manual may show shields, guards or plates open or

removed. Under no circumstances should your mower

be operated without these devices in place.

All information is based upon product information

available at 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 operator’s right and left

when seated in the normal operating position and facing

the forward travel direction.

1.3 SERVICING THE ENGINE AND DRIVE

TRAIN COMPONENTS

The detail servicing and repair of the engine, hydraulic

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.

Section 1

Figure 1-1Tractor Serial Number Plate Location

390S0137A

SERIAL NUMBER



PLATE LOCATION

MODEL

SERIAL

Division of Metalcraft of Mayville, Inc.



Mayville, Wisconsin 53050



Patents Issued and Pending

MANUFACTURED UNDER ONE OR MORE



OF THE FOLLOWING PATENTS:

PATENTS PENDING

4,487,006



4,885,903



4,920,733



4,967,543

4,991,382



4,998,948



5,118,617



5,826,416

5,832,708



5,865,018

CE Mark

Transmission

Choke

On/Start Spring Tension on Idler

Oil

Off/Stop

SYMBOL DESCRIPTION

ISO Symbols

SpinningBlade

48071S

Parking Brake

WARNING

FALLING HAZARD



USE ONLY SCAG APPROVED



RIDING ATTACHMENTS

SEE OPERATOR'S MANUAL

481109

FallingHazard

Slow

Fast

Cutting Element - Engage

Cutting Element - Basic symbol

Cutting Element - Disengage

Continuously Variable - Linear

Read Operator's Manual

Keep Bystanders Away

Pinch Point

481039S

SYMBOL DESCRIPTION SYMBOL DESCRIPTION

Hourmeter/Elapsed Operating Hours

Thown Object Hazard

SAFETY INFORMATION

2.1 INTRODUCTION

Your mower is only as safe as the operator.

Carelessness or operator error may result in serious

bodily injury or death. Hazard control and accident

prevention are dependent upon the awareness, concern,

prudence, and proper training of the personnel involved in

the operation, transport, maintenance and storage of the

equipment. Make sure every operator is properly trained

and thoroughly familiar with all 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, Service Department at P.O. Box 152,

Mayville, WI 53050 or contact us via the Internet at

www.scag.com. Use the contact form to make your

request. Please indicate the complete model and serial

number of your Scag product when requesting

replacement manuals.

2.2 SIGNAL WORDS

This symbol means “Attention! Become Alert! Your

Safety is Involved!" The symbol is used with the

following signal words to attract your attention to safety

messages found on the decals on the machine 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 found on the safety decals on the

machine and throughout this manual that alerts the

viewer to the existence and relative degree of the

hazard.

The signal word “WARNING” denotes that a hazard

exists on or near the machine that can result in injury or

death if proper precautions are not taken.

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.

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.

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.

5. DO NOT operate the machine under the influence

of alcohol or drugs.

6. If the operator(s) or mechanic(s) cannot read English

it is the owner's responsibility to explain this material

to them.

WARNING:

Section 2

12. DO NOT add fuel to a running or hot engine. Allow

the engine to cool for several minutes before adding

fuel.

13. Keep flammable objects (cigarettes, matches, etc.),

open flames and sparks away from the fuel tank and

fuel container.

14. Equipment must comply with the latest requirements

per SAE J137 and/or ANSI/ASAE S279 when

driven on public roads.

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.

15. DO NOT operate without the side discharge chute

installed and in the down position.

16. Check the blade mounting bolts at frequent intervals

for proper tightness.

17. 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.

DO NOT operate on steep slopes. To check a slope,

attempt to back up it (with the cutter deck down). If

the machine can back up the slope without the

wheels slipping, reduce speed and use extreme

caution. ALWAYS FOLLOW OSHA APPROVED

OPERATION.

8. 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.

9. 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.

Thismachineisequipped with an interlock system

intended to protect the operator and others from

injury. This is accomplished by preventing the

2.3 BEFORE OPERATION

CONSIDERATIONS (CONT'D)

7. 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.

Section 2

WARNING:

engine from starting unless the deck drive is

disengaged, the parking brake is on, the steering

control levers are in the neutral position and the

operator is in the seat. The system shuts off the

engine if the operator leaves the seat with the deck

driveengagedand/orthesteering control levers are

not in the neutral postion and the parking brake is

not engaged. Never operate equipment with the

interlock system disconnected or malfunctioning.

10. Be sure the interlock switches are functioning

correctly.

11. Fuel is flammable; handle it with care. Fill the fuel

tank outdoors. Never fill it indoors. Use a funnel or

spout to prevent spillage. Clean up any spillage

before starting the engine.

-NOTE-

WARNING:

Section 2

3. To prevent tipping or loss of control, do not start or

stop suddenly. Always avoid unnecessary turns and

travel at reduced speed.

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 start the engine, with the

operator in the seat, disengage power to the cutter

deck, place the 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, roots and other hidden

hazards in the terrain. 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 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.

10. Disengage power to cutter deck before crossing

roads, walks or gravel drives.

11. Mowonlyin 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.

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 the engine inside a building or a

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.

5. To reduce fire hazard, keep the engine free of grass,

leaves, excessive grease, oil and dirt.

Hydraulic fluid is under high pressure. Keep

body and hands away from pinholes or nozzles that

eject hydraulic fluid under high pressure. If you

need service on your hydraulic system, please see

your authorized Scag dealer. If hydraulic fluid is

injected into the skin, it must be surgically removed

within a few hours by a doctor or gangrene may

result.

WARNING:

2.4 OPERATION CONSIDERATIONS

(CONT'D)

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