Scag Power Equipment Turf Tiger II User manual

PART NO. 03437
PRINTED 9/2018
PRINTED IN USA
© 2019
Scag Power Equipment
Division of Metalcraft of Mayville, Inc.
Congratulations on owning a Scag mower! 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 efciency. The specic models that
this book covers are listed on the inside cover. Before operating your machine,
please read all the information enclosed.
OPERATOR’S
MANUAL
Models: STTII-52V-25CH-LP
STTII-52V-26CH-EFI
STTII-61V-25CH-LP
STTII-61V-25KBD
STTII-61V-26CH-EFI
STTII-61V-31DFI
STTII-61V-35BV
STTII-61V-37BV-EFI
STTII-72V-25KBD
STTII-72V-31DFI
STTII-72V-35BV
STTII-72V-37BV-EFI

WARNING
FAILURE TO FOLLOW SAFE OPERATING PRACTICES MAY RESULT IN
SERIOUS INJURY OR DEATH.
• Read this manual completely as well as other manuals that came with your mower.
• 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.
• Under no circumstances should the machine be operated on slopes greater than 15 degrees.
ALWAYS FOLLOW OSHA APPROVED OPERATION.
• Stay two cut widths away from slopes, drop offs, ditches and retaining walls.
• DO NOT mow on wet grass. Wet grass reduces traction and steering control.
• 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.
• Keep others off the mower (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:
STTII-52V-25CH-LP with a serial number of P1300001 to P1399999
STTII-52V-26CH-EFI with a serial number of P1400001 to P1499999
STTII-61V-25CH-LP with a serial number of P1500001 to P1599999
STTII-61V-25KBD with a serial number of P1600001 to P1699999
STTII-61V-26CH-EFI with a serial number of P1700001 to P1799999
STTII-61V-31DFI with a serial number of P1800001 to P1899999
STTII-61V-35BV with a serial number of P1900001 to P1999999
STTII-61V-37BV-EFI with a serial number of P2000001 to P2099999
STTII-72V-25KBD with a serial number of P2100001 to P2199999
STTII-72V-31DFI with a serial number of P2200001 to P2299999
STTII-72V-35BV with a serial number of P2300001 to P2399999
STTII-72V-37BV-EFI with a serial number of P2400001 to P2499999
Always use the entire serial number listed on the serial number tag when referring to this product.

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Table of Contents
Table of Contents
SECTION 1 - GENERAL INFORMATION...................................................................................1
1.1 INTRODUCTION...........................................................................................................................................1
1.2 DIRECTION REFERENCE ...........................................................................................................................1
1.3 SERVICING THE ENGINE AND DRIVE TRAIN COMPONENTS.................................................................1
1.4 SYMBOLS ....................................................................................................................................................2
SECTION 2 - SAFETY INFORMATION ......................................................................................3
2.1 INTRODUCTION...........................................................................................................................................3
2.2 SIGNAL WORDS ..........................................................................................................................................3
2.3 BEFORE OPERATION CONSIDERATIONS................................................................................................3
2.4 TESTING THE SAFETY INTERLOCK SYSTEM ..........................................................................................4
2.5 OPERATION CONSIDERATIONS................................................................................................................5
2.6 ROLL-OVER PROTECTION SYSTEM .........................................................................................................6
2.7 MAINTENANCE CONSIDERATIONS & STORAGE ....................................................................................8
2.8 USING A SPARK ARRESTOR.....................................................................................................................9
2.9 SPARK IGNITION SYSTEM .........................................................................................................................9
2.10 SAFETY AND INSTRUCTIONAL DECALS.............................................................................................10
SECTION 3 - SPECIFICATIONS ..............................................................................................11
3.1 ENGINE ......................................................................................................................................................11
3.2 ELECTRICAL .............................................................................................................................................12
3.3 POWER HEAD ...........................................................................................................................................12
3.4 CUTTER DECK ..........................................................................................................................................13
3.5 HYDRAULIC SYSTEM ...............................................................................................................................13
3.6 WEIGHTS AND DIMENSIONS ...................................................................................................................13
3.7 PRODUCTIVITY ...........................................................................................................................................3
SECTION 4 - OPERATING INSTRUCTIONS ...........................................................................14
4.1 TIGER EYE INSTRUMENT IDENTIFICATION ...........................................................................................14
4.2 CONTROLS IDENTIFICATION ..................................................................................................................16
4.3 SAFETY INTERLOCK SYSTEM ................................................................................................................17
4.4 TESTING THE SAFETY INTERLOCK SYSTEM ........................................................................................17
4.5 INITIAL RUN-IN PROCEDURES................................................................................................................18
4.6 STARTING THE ENGINE ...........................................................................................................................18
4.7 GROUND TRAVEL AND STEERING .........................................................................................................18
4.8 ENGAGING THE DECK DRIVE (CUTTER BLADES)................................................................................19
4.9 HILLSIDE OPERATION..............................................................................................................................20
4.10 PARKING THE MOWER ...........................................................................................................................20
4.11 AFTER OPERATION ................................................................................................................................20
4.12 REMOVING CLOGGED MATERIAL ........................................................................................................20
4.13 MOVING MOWER WITH ENGINE STOPPED..........................................................................................21
4.14 RECOMMENDATIONS FOR MOWING ....................................................................................................21
4.15 ADJUSTING CUTTING HEIGHT..............................................................................................................21

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4.16 ADJUSTING THE STEERING LEVERS...................................................................................................22
4.17 ADJUSTING THE HEIGHT ADJUST PEDAL ..........................................................................................22
4.18 TOWING (OPTIONAL HITCH ACCESSORY)...........................................................................................23
SECTION 5 - TROUBLESHOOTING CUTTING CONDITIONS ...............................................24
SECTION 6 - ADJUSTMENTS .................................................................................................27
6.1 TRAVEL ADJUSTMENTS ..........................................................................................................................28
6.2 THROTTLE CONTROL AND CHOKE ADJUSTMENTS............................................................................29
6.3 BELT ADJUSTMENT .................................................................................................................................29
6.4 BELT ALIGNMENT.....................................................................................................................................30
6.5 CUTTER DECK ADJUSTMENTS ..............................................................................................................30
6.6 CUSTOM-CUT BAFFLE ADJUSTMENT ...................................................................................................32
6.7 ELECTRIC CLUTCH ADJUSTMENT.........................................................................................................33
SECTION 7 - MAINTENANCE..................................................................................................34
7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS ......................................................34
7.2 LUBRICATION............................................................................................................................................35
7.3 HYDRAULIC SYSTEM ...............................................................................................................................37
7.4 ENGINE OIL ...............................................................................................................................................38
7.5 ENGINE FUEL SYSTEM (GASOLINE & DIESEL MODELS)....................................................................38
7.6 LPG ENGINE FUEL SYSTEM....................................................................................................................39
7.7 ENGINE AIR CLEANER.............................................................................................................................40
7.8 BATTERY....................................................................................................................................................40
7.9 DRIVE BELTS.............................................................................................................................................41
7.10 CUTTER BLADES....................................................................................................................................42
7.11 TIRES........................................................................................................................................................43
7.12 CUTTER DECK GEARBOX .....................................................................................................................43
7.13 COOLING SYSTEM .................................................................................................................................44
7.14 BODY, DECK, AND UPHOLSTERY .........................................................................................................45
SECTION 8 - ILLUSTRATED PARTS LIST ..............................................................................46
8.1 SCAG APPROVED ATTACHMENTS AND ACCESSORIES......................................................................46
STTII 52V CUTTER DECK ...............................................................................................................................48
STTII 61V & 72V CUTTER DECKS..................................................................................................................50
STTII CUTTER DECK CONTROLS .................................................................................................................52
STTII SHEET METAL COMPONENTS ............................................................................................................54
STTII ROLL-OVER PROTECTION SYSTEM ...................................................................................................56
STTII SUSPENSION SEAT ..............................................................................................................................58
STTII DECK DRIVE COMPONENTS ...............................................................................................................60
STTII ENGINE AND ATTACHING PARTS - AIR COOLED ( GASOLINE).......................................................62
STTII ENGINE & ATTACHING PARTS - LIQUID COOLED (GASOLINE).......................................................64
STTII ENGINE & ATTACHING PARTS - KOHLER 25CH-LP-EFI....................................................................66
STTII ENGINE & ATTACHING PARTS - KUBOTA DIESEL.............................................................................68

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STTII BRAKE COMPONENTS.........................................................................................................................70
STTII STEERING COMPONENTS ...................................................................................................................72
STTII HYDRAULIC SYSTEM ...........................................................................................................................74
STTII FUEL SYSTEM - GASOLINE ENGINES................................................................................................76
STTII FUEL SYSTEM - KOHLER 25CH-LP-EFI ..............................................................................................78
STTII FUEL SYSTEM - KUBOTA DIESEL .......................................................................................................80
BDP-16A HYDRAULIC PUMP ASSEMBLY WITH COOLING FAN ................................................................82
STTII ELECTRICAL SYSTEM - GASOLINE & LP ENGINES .........................................................................84
STTII ELECTRICAL SYSTEM - KUBOTA DIESEL..........................................................................................86
REPLACEMENT DECALS AND INFORMATION PLATES .............................................................................88
ELECTRICAL SCHEMATIC - KOHLER EFI (GASOLINE & LP).....................................................................90
ELECTRICAL SCHEMATIC - KUBOTA 25KBD ..............................................................................................91
ELECTRICAL SCHEMATIC - KAWASAKI 31DFI ............................................................................................92
ELECTRICAL SCHEMATIC - BRIGGS & STRATTON 35BV ..........................................................................93
ELECTRICAL SCHEMATIC - BRIGGS & STRATTON 37BV-EFI....................................................................94
LIMITED WARRANTY - COMMERCIAL EQUIPMENT.................................. INSIDE BACK COVER