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Scag Power Equipment STTII-52V-26CH-EFI Operator's Manual

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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 efficiency. The specific models that
this book covers are listed on the inside cover. Before operating your machine,
please read all the information enclosed.
© 2016
Scag Power Equipment
Division of Metalcraft of Mayville, Inc.
OPERATOR'S
MANUAL
Models:
STTII-52V-26CH-EFI
STTII-61V-25KA
STTII-61V-26CH-EFI
STTII-61V-26DFI
STTII-61V-31DFI
STTII-61V-35BV
STTII-72V-26CH-EFI
STTII-72V-26DFI
STTII-72V-31DFI
STTII-72V-35BV
PART NO. 03407
PRINTED 1/2016
PRINTED IN USA

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Summary of Contents for Scag Power Equipment STTII-52V-26CH-EFI

  • Page 1 The specific models that this book covers are listed on the inside cover. Before operating your machine, please read all the information enclosed. © 2016 PART NO. 03407 Scag Power Equipment PRINTED 1/2016 Division of Metalcraft of Mayville, Inc. PRINTED IN USA...
  • Page 2 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-26CH-EFI with a serial number of L9900001 to L9999999 STTII-61V-25KA...

  • Page 3: Table Of Contents

    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 OPERATION CONSIDERATIONS ........................4...
  • Page 4 Table of Contents SECTION 5 - TROUBLESHOOTING CUTTING CONDITIONS ..........22 SECTION 6 - ADJUSTMENTS ....................25 6.1 TRAVEL ADJUSTMENTS ..........................26 6.2 THROTTLE CONTROL AND CHOKE ADJUSTMENTS ................27 6.3 BELT ADJUSTMENT ..........................27 6.4 BELT ALIGNMENT .............................28 6.5 CUTTER DECK ADJUSTMENTS ......................28 6.6 CUSTOM-CUT BAFFLE ADJUSTMENT ....................30 6.7 ELECTRIC CLUTCH ADJUSTMENT ......................31 SECTION 7 - MAINTENANCE ....................32 7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS ............32...
  • Page 5 Table of Contents STTII ENGINE AND ATTACHING PARTS - AIR COOLED ................58 STTII ENGINE & ATTACHING PARTS - LIQUID COOLED ................60 STTII BRAKE COMPONENTS .........................62 STTII STEERING COMPONENTS ........................64 STTII HYDRAULIC SYSTEM ...........................66 STTII FUEL SYSTEM ............................68 BDP-16A HYDRAULIC PUMP ASSEMBLY WITH COOLING FAN ..............70 STTII ELECTRICAL SYSTEM ..........................72 REPLACEMENT DECALS AND INFORMATION PLATES ................74 ELECTRICAL SCHEMATIC - KAWASAKI 25KA ....................76...
  • Page 6 Table of Contents...

  • Page 7: Section 1 - General Information

    Scag service parts. All information is based upon product information available - IMPORTANT - at the time of approval for printing. Scag Power Equipment The replacement of any part on this product reserves the right to make changes at any time without by other than the manufacturer's authorized notice and without incurring any obligation.

  • Page 8: Symbols

    Section 1 1.4 SYMBOLS SYMBOL DESCRIPTION SYMBOL DESCRIPTION Choke Transmission Parking Brake Spinning Blade 48071S On/Start Spring Tension on Idler Off/Stop Falling Hazard Thrown Object Hazard Fast Slow Continuously Variable - Linear Cutting Element - Basic Symbol Pinch Point Cutting Element - Engage 481039S Hour meter/Elapsed Operating Hours Cutting Element - Disengage...

  • Page 9: Section 2 - Safety Information

    Section 2 SAFETY INFORMATION 2.1 INTRODUCTION DANGER Your mower is only as safe as the operator. Carelessness or operator error may result in serious bodily injury The signal word “DANGER” denotes that an extremely or death. Hazard control and accident prevention are hazardous situation exists on or near the machine that dependent upon the awareness, concern, prudence, and could result in high probability of death or irreparable injury...

  • Page 10: Operation Considerations

    Section 2 3. DO NOT allow children to ride or play on the 10. Be sure the interlock switches are functioning machine, it is not a toy. correctly. 4. Clear the area to be mowed of objects that could be 11.
  • Page 11 Section 2 2. Reduce speed and exercise extreme caution on 14. NEVER raise the deck with the blades engaged. slopes and in sharp turns to prevent tipping or loss 15. Take all possible precautions when leaving the of control. Be especially cautious when changing machine unattended, such as disengaging the directions on slopes.

  • Page 12: Roll-Over Protection System

    Section 2 23. Use care when approaching blind corners, shrubs, Lower the roll bar only when absolutely necessary. trees, or other objects that may obscure vision. 1. To lower the roll bar, remove the hairpin cotter pins 24. NEVER leave the machine running unattended. and remove the two (2) lock pins.
  • Page 13 Section 2 WARNING Failure to properly inspect and maintain the seat belt can cause serious injury or loss of life. 1. Check the full length of the seat belt webbing for cuts, wear, fraying, dirt and stiffness. See Figure 2-3. Figure 2-4.

  • Page 14: Maintenance Considerations & Storage

    Section 2 2.6 MAINTENANCE CONSIDERATIONS & WARNING STORAGE 1. Never make adjustments to the machine with the Hydraulic fluid is under high pressure and can engine running unless specifically instructed to do penetrate skin causing injury. If hydraulic fluid so. If the engine is running, keep hands, feet, and is injected into the skin, it must be surgically clothing away from moving parts.

  • Page 15: Safety And Instructional Decals

    Section 2 2.9 SAFETY AND INSTRUCTIONAL DECALS WARNING INSTALL BELT COVER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL 483402 483407 483402 483407 FORWARD REVERSE 481568 483406 484293 483633 483300 WARNING Operation of this equipment may create sparks that can start res around dry vegetation.

  • Page 16: Section 3 - Specifications

    General Type ....................Heavy Duty Industrial/Commercial Gasoline Model: Scag Model STTII-61V-25KA ......................Kawasaki FD750D Scag Model STTII-52V-26CH-EFI, STTII-61V-26CH-EFI, STTII-72V-26CH-EFI ....Kohler Command ECH749 Scag Model STTII-61V-26DFI, STTII-72V-26DFI ................Kawasaki FD791D Scag Model STTII-61V-31DFI, STTII-72V-31DFI ................Kawasaki FD851D Scag Model STTII-61V-35BV, STTII-72V-35BV..............Briggs & Stratton Vanguard Displacement: Kohler 26CH-EFI (ECH749) ..........................

  • Page 17: Power Head

    Section 3 3.3 POWER HEAD Drive System ....Hydraulic Drive with Two Variable Displacement Pumps and Two Cast-Iron High Torque Motors Hydrostatic Pumps ..............Two Hydro-Gear™ 16 cc/rev. Pumps with Dump Valves Drive Wheel Motors: ............Two Parker Model TG 15 cu. inch Cast-Iron High Torque Motors Steering/Travel Control ...................

  • Page 18: Hydraulic System

    Section 3 3.5 HYDRAULIC SYSTEM Hydraulic Oil Filter ......................10 Micron Spin-on Element Type Hydraulic Reservoir ........................Nylon; 3 Quart Capacity 3.6 WEIGHTS AND DIMENSIONS Length..................83" .......87.5" ........90" Tracking Width ................51" ........ 56" ........56" Overall Width w/chute down ............64.5"......73.5" ........83" Overall Width w/chute up............

  • Page 19: Section 4 - Operating Instructions

    9. Neutral Indicator (Figure 4-1). Light will illuminate additional information or service is needed, contact your when the steering control levers are in the neutral Scag Power Equipment Dealer. lock position. 10. Park Brake Indicator (Figure 4-1). Light will 4.1 TIGER EYE INSTRUMENT...
  • Page 20 Section 4 SERVICE AIR OIL PRESSURE FILTER INDICATOR INDICATOR WATER TEMPERATURE GLOW PLUG SERVICE ENGINE INDICATOR INDICATOR INDICATOR PARKING BRAKE VOLTMETER INDICATOR INDICATOR SEAT INDICATOR NEUTRAL INDICATOR INDICATOR HOUR METER INDICATOR Figure 4-1. Tiger Eye Advanced Monitoring System SUSPENSION SEAT CONTROL KNOB DECK LIFT BRAKE...

  • Page 21: Controls Identification

    Section 4 4.2 CONTROLS IDENTIFICATION 1. Ignition Switch (Figure 4-2). The ignition switch is used to start the engine and has three positions; OFF, ON, and START. 2. Mower Deck Switch (Figure 4-2). Used to engage and disengage the mower drive system. Pulling up on the switch will engage the deck drive.

  • Page 22: Safety Interlock System

    Section 4 4.4 INITIAL RUN-IN PROCEDURES 13. Deck Release Lever (Figure 4-2). Used to lock the cutter deck in the transport position. Push the foot pedal forward and pull back on the release lever to FIRST DAY OF USE OR APPROXIMATELY 20 HOURS release the cutter deck for normal mowing.

  • Page 23: Ground Travel And Steering

    Section 4 4.6 GROUND TRAVEL AND STEERING - IMPORTANT - Do not travel forward over a curb. The mower will hang up on the curb. Raise the deck and travel - IMPORTANT - backwards over the curb at a 45 degree angle. If you are not familiar with the operation of a (See Section 4.1, items 13 - 15, on page 14 for machine with lever steering and/or hydrostatic...

  • Page 24: Engaging The Deck Drive (Cutter Blades)

    Section 4 4.8 HILLSIDE OPERATION 4.7 ENGAGING THE DECK DRIVE (CUTTER BLADES) WARNING 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.

  • Page 25: After Operation

    Section 4 4.10 AFTER OPERATION 4.12 MOVING MOWER WITH ENGINE STOPPED 1. Wash the entire mower after each use. Do not use high pressure spray or direct the spray onto To “free-wheel” or move the mower around without the electrical components. engine running, rotate the dump valve levers counter- clockwise.

  • Page 26: Adjusting Cutting Height

    Section 4 2. The discharge chute must not be removed and must be kept in the lowest position to deflect grass clippings and thrown objects downward. Direct the side discharge away from sidewalks or streets to minimize cleanup of clippings. When mowing close LANYARD to obstacles, direct the discharge away from the obstacles to reduce the chance of property damage...

  • Page 27: Adjusting The Steering Levers

    Section 4 4.15 ADJUSTING THE STEERING LEVERS 3. The height adjust pedal can be located in three (3) different positions for operator comfort and control. 1. Position the seat to the desired location. See Figure 4-11. 2. While in the operator's position without the engine running, move both steering levers forward and reverse to check for full function control and comfort.

  • Page 28: Section 5 - Troubleshooting Cutting Conditions

    Section 5 TROUBLESHOOTING CUTTING CONDITIONS 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...
  • Page 29 Section 5 TROUBLESHOOTING CUTTING CONDITIONS (CONT'D) CONDITION CAUSE CURE U N E V E N C U T O N F L AT Lift worn from blade Replace blade GROUND - WAVY HIGH-LOW APPEARANCE, SCALLOPED Blade upside down Mount with cutting edge toward ground CUT, OR ROUGH CONTOUR Deck plugged, grass accumulation Clean underside of deck...
  • Page 30 Section 5 TROUBLESHOOTING CUTTING CONDITIONS (CONT'D) CONDITION CAUSE CURE SCALPING - BLADES HITTING Low tire pressures Check and adjust pressures DIRT OR CUTTING VERY CLOSE TO THE GROUND Ground speed too fast Slow speed to adjust for conditions May need to reduce ground speed, raise Cutting too low cutting height, change direction of cut, and/or change pitch and level...

  • Page 31: Section 6 - Adjustments

    Section 6 ADJUSTMENTS WARNING Do not operate the mower if the parking brake is not operable. Possible severe injury could result. PULL BACK ON PARKING BRAKE The parking brake linkage should be adjusted whenever LATCH the parking brake lock latch is placed in the “ENGAGE” position and the parking brake will not prevent the mower from moving.

  • Page 32: Travel Adjustments

    Section 6 6.1 TRAVEL ADJUSTMENTS LOOSEN HERE Neutral or tracking adjustments will need to be made if: A. The steering control levers are in the neutral position and the machine creeps forward or backward. See Neutral Adjustment (next procedure). B. The steering control levers are in the full forward position and the mower pulls to one side or the other when traveling in a forward direction.

  • Page 33: Throttle Control And Choke Adjustments

    Section 6 - NOTE - 6. Actuate the steering control levers forward and reverse several times and return them to the neutral If after making the adjustment as outlined in step position. 1A, the machine creeps forward or backward, perform the neutral adjustment. See Neutral 7.

  • Page 34: Belt Alignment

    Section 6 WARNING If the pump drive belt fails, steering control will be lost which could result in serious injury or death. Replace the pump drive belt as needed or every LOOSEN HERE 400 hours / 2 years, whichever occurs first. ADJUST HERE 6.4 BELT ALIGNMENT Belt alignment is important for proper performance of...
  • Page 35 Section 6 - NOTE - To prevent the cutter deck from teetering, all four (4) cutter deck hanging chains must have tension on them. If all four chains do not have tension on them and the deck teeters, you must readjust the cutter deck as outlined in the procedures above.

  • Page 36: Custom-Cut Baffle Adjustment

    Section 6 - NOTE - C. 4-3/4" or 5-1/4" Position - (See Figure 6-9). Placing the baffle in either the 4-3/4" or 5-1/4" setting will If an adjustment had to be made, be sure that the enhance fall cutting (leaf pickup) and reduce cutter cutter deck can easily be locked into the transport deck "blowout".

  • Page 37: Electric Clutch Adjustment

    Section 6 6.7 ELECTRIC CLUTCH ADJUSTMENT ADJUSTMENT NUTS The electric clutch serves two functions in the operation of the mower. In addition to starting and stopping the power flow to the cutter blades, the clutch also acts as a brake to assist in stopping blade rotation when the PTO is switched off or the operator presence circuit is interrupted.

  • Page 38: Section 7 - Maintenance

    Section 7 MAINTENANCE 7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS HOURS PROCEDURE COMMENTS BREAK-IN (FIRST 10) Check all hardware for tightness Check hydraulic oil level See paragraph 7.3 C h e c k a l l b e l t s f o r p r o p e r See paragraph 7.8 alignment Check coolant level...

  • Page 39: Lubrication

    Section 7 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS (CONT'D) HOURS PROCEDURE COMMENTS BREAK-IN (FIRST 10) Apply grease to fittings See paragraph 7.2 Check hardware for tightness Change engine oil filter See paragraph 7.4 Check hydraulic oil level See paragraph 7.3 Replace engine fuel filter See paragraph 7.5 Drain hydraulic system and replace...
  • Page 40 Section 7 GREASE FITTING LUBRICATION Lubricant Interval Lithium MP White Grease 2125 (40 Hours/Weekly) Chassis Grease (100 Hours/Bi-monthly) Chassis Grease (200 Hours/Monthly) Chassis Grease (500 Hours/Yearly) Figure 7-1. Lubrication Fitting Points...

  • Page 41: Hydraulic System

    Section 7 7.3 HYDRAULIC SYSTEM B. CHANGING HYDRAULIC OIL The hydraulic oil should be changed after every 500 hours A. CHECKING HYDRAULIC OIL LEVEL or annually, whichever occurs first. The oil should also be changed if the color of the fluid has become black or The hydraulic oil level should be checked after the first 10 milky.

  • Page 42: Engine Oil

    Section 7 C. CHANGING HYDRAULIC OIL FILTER ELEMENT The hydraulic oil filter should be changed after every 500 hours of operation or annually, whichever occurs first. 1. Remove the oil filter element and properly discard it. See Figure 7-3. Fill the new filter with clean oil and install the filter.

  • Page 43: Engine Air Cleaner

    Section 7 B. REPLACING IN-LINE FUEL FILTER FILLER NECK ELEMENTS INSERT The engine fuel filter should be replaced after every 500 hours of operation or annually, whichever occurs first. See Figure 7-7. FUEL LEVEL 1. Close the shut-off valve. 2. Remove the two clamps securing the fuel filter to the fuel hose.

  • Page 44: Battery

    Section 7 1. Unhook the clamps securing the air cleaner cover to WARNING the air filter canister. Remove the air cleaner cover and set aside. 2. Remove the air cleaner and inspect. Electric storage battery fluid contains sulfuric 3. Clean or replace the air cleaner and foam acid which is POISON and can cause SEVERE pre-cleaner as recommended by the engine CHEMICAL BURNS.

  • Page 45: Drive Belts

    Section 7 7.9 CUTTER BLADES WARNING A. BLADE INSPECTION BATTERIES PRODUCE EXPLOSIVE GASES. Charge the battery in a well ventilated space so BLADE INSPECTION gases produced while charging can dissipate. 1. Remove the ignition key before servicing the blades. 2. Raise the mower deck to the highest position. Place Charging rates between 3 and 50 amperes are satisfactory the lanyard pin in the highest cutting height position if excessive gassing or spewing of electrolyte does not...
  • Page 46 Section 7 - NOTE - CAUTION DO NOT sharpen the blades beyond 1/3 of the width of the blade. See Figure 7-8. Inspect the cutter blade spacer(s) and washer 1. Sharpen the cutting edge at the same bevel as the for wear and/or cupping.

  • Page 47: Tires

    Section 7 7.10 TIRES B. CHANGING LUBRICANT The lubricant in the cutter deck gearbox should be Check the tire pressures after every 8 hours of operation changed after every 500 hours of operation or yearly, or daily. whichever occurs first. Caster Wheels Flat Free Drive Wheels...

  • Page 48: Body, Deck, And Upholstery

    Section 7 C. CHECKING THE FAN BELT TENSION (LIQUID- Fill to Bottom of Filler Neck COOLED ENGINES ONLY) Periodically check the fan belt tension. The belt should deflect 1/2" with 10 pounds of pressure. See your Scag dealer if the belt is in need of adjustment or replacement. 7.13 BODY, DECK, AND UPHOLSTERY CAUTION 030467-13...

  • Page 49: Section 8 - Illustrated Parts List

    Section 8 ILLUSTRATED PARTS LIST 8.1 SCAG APPROVED ATTACHMENTS AND ACCESSORIES Attachments and accessories manufactured by companies other than Scag Power Equipment are not approved for use on this machine. Scag approved attachments and accessories: • GC-3B (p/n 900S) - Requires a 901D (52 STT Install Kit) or 900X (61 STT/SCZ Install Kit) •...

  • Page 50: Sttii 52V Cutter Deck

    Section 8 STTII 52V CUTTER DECK 16 11 STTII 52V CD...
  • Page 51 Section 8 STTII 52V CUTTER DECK Ref. Ref. Part No. Description Part No. Description 43589 Shaft, Spindle 462879 Cutter Deck w/Decals - 52V 481024 Seal, Top 04020-09 Nut, 5/8-11 UNC 481022 Bearing Assembly 04001-172 Bolt, Hex Head 1/4-20 x 1” Grade 8 48114-04 Grease Fitting 48926...

  • Page 52: Sttii 61V & 72V Cutter Decks

    Section 8 STTII 61V & 72V CUTTER DECKS Only STTII 61V CD...
  • Page 53 Section 8 STTII 61V & 72V CUTTER DECKS Ref. Ref. Part No. Description Part No. Description 43589 Shaft, Spindle 462880 Cutter Deck w/Decals - 61V 481024 Seal, Top 462881 Cutter Deck w/Decals - 72V 04020-09 Nut, 5/8-11 UNC 481022 Bearing Assembly 48114-04 Grease Fitting 04001-172...

  • Page 54: Sttii Cutter Deck Controls

    Section 8 STTII CUTTER DECK CONTROLS STTII CDC...
  • Page 55 Section 8 STTII CUTTER DECK CONTROLS Ref. Part No. Description 462856 Deck Latch Weldment w/Grip 481477 Grip 43668 Spacer, Deck Latch 484191 Spring, Torsion Lever Return 04021-07 Nut, Elastic Stop 1/2-13 04040-13 Flatwasher, 1/2-.562 x 1.375 x .109 427019 Link, Deck Lift 431018 Pivot, Deck Link 04001-153...

  • Page 56: Sttii Sheet Metal Components

    Section 8 STTII SHEET METAL COMPONENTS 27 28 29 32 STTII SMC...
  • Page 57 Section 8 STTII SHEET METAL COMPONENTS Ref. Ref. Part No. Description Part No. Description 482028-01 Pug, Grease Hole 427011 Mounting Plate, Seat 9278 Wheel Assembly (incl. #43) 04001-46 Bolt, Hex Head 3/8-16 x 2-1/4” 482621 Bearing 04001-08 Bolt, Hex Head 5/16-18 x 3/4” 482622 Seal 484148...

  • Page 58: Sttii Roll-Over Protection System

    Section 8 STTII ROLL-OVER PROTECTION SYSTEM...
  • Page 59 Section 8 STTII ROLL-OVER PROTECTION SYSTEM Ref. Part No. Description 462210 STT, ROPS 04001-194 Bolt, Hex Head 1/2-13 x 4-1/4” 04021-19 Nut, Center Lock 1/2-13 04040-13 Flatwasher, 1/2-.562 x 1.375 x .109 484168 Pin Assembly, ROPS Hinge (incl. #9, #10) 04001-90 Bolt, Hex Head 1/2-13 x 3-1/4”...

  • Page 60: Sttii Suspension Seat

    Section 8 STTII SUSPENSION SEAT Ref. Part No. Description 485591 Seat Assembly 484709 Armrest Kit, LH 484717 Seat Belt Kit 485652 Knob Kit, Recliner 484710 Armrest Kit, RH 484712 Back Cover 481638 Switch, N/O 485594 Track Kit 484714 Knob Kit, Weight Adjust 484708 Cover, Seat Cushion...

  • Page 61: Notes

    Section 8 NOTES...

  • Page 62: Sttii Deck Drive Components

    Section 8 STTII DECK DRIVE COMPONENTS 6 70 61 60 59 STTII DDC...
  • Page 63 Section 8 STTII DECK DRIVE COMPONENTS Ref. Ref. Part No. Description Part No. Description 04019-03 Nut, Serrated Flange 5/16-18 427071 Cover, Rear 04001-19 Bolt, Hex Head 3/8-16 x 1” 04003-07 Bolt, Carriage 1/4-20 x 1/2” 04063-06 Key, 1/4 x 1/4 x 1-1/2” 04003-02 Bolt, Carriage 1/4-20 x 3/4”...

  • Page 64: Sttii Engine And Attaching Parts - Air Cooled

    Section 8 STTII ENGINE AND ATTACHING PARTS - AIR COOLED 12 13...
  • Page 65 Section 8 STTII ENGINE AND ATTACHING PARTS - AIR COOLED Ref. Part No. Description 485036 Engine, 26EFI - Kohler 484238 Engine, 35BV - Briggs & Stratton 462851 Hood Assy., STTII (EFI) 462848 Hood Assy., STTII (35BV) 04009-07 Bolt, Shoulder 3/8-1/2 424633 Latch, Hood 483507...

  • Page 66: Sttii Engine & Attaching Parts - Liquid Cooled

    Section 8 STTII ENGINE & ATTACHING PARTS - LIQUID COOLED...
  • Page 67 Section 8 STTII ENGINE & ATTACHING PARTS - LIQUID COOLED Ref. Part No. Description 485037 Engine, FD750 - Kawasaki 485038 Engine, FD791 - Kawasaki 485395 Engine, FD850 - Kawasaki 462848 Hood Assy., STTII (FD750) 462846 Hood Assy., STTII (FD791 & FD850) - Fuel Injected 04009-07 Bolt, Shoulder 3/8 x 1/2 424633...

  • Page 68: Sttii Brake Components

    Section 8 STTII BRAKE COMPONENTS 11 12 STTII BSC...
  • Page 69 Section 8 STTII BRAKE COMPONENTS Ref. Ref. Part No. Description Part No. Description 04001-190 Bolt, Hex Head 1/2-13 x 2-3/4” 04021-07 Nut, Elastic Stop 1/2-13 04021-19 Nut, Serrated Flange 3/8-16 04040-13 Flatwasher, 1/2-.562 x 1.375 x .109 426983 Mounting Bracket, Brakes 483353-03 Bearing 43872...

  • Page 70: Sttii Steering Components

    Section 8 STTII STEERING COMPONENTS 39 40 37 39...
  • Page 71 Section 8 STTII STEERING COMPONENTS Ref. Ref. Part No. Description Part No. Description 452718 Control Lever Weldment, RH 462804 Handle Bar w/Grip - LH 452717 Control Lever Weldment, LH 462805 Handle Bar w/Grip - RH 43600 Spacer, Bearing 484376 Grip, Control Lever 431024 Spacer, Controls 483238...

  • Page 72: Sttii Hydraulic System

    Section 8 STTII HYDRAULIC SYSTEM...
  • Page 73 Section 8 STTII HYDRAULIC SYSTEM Ref. Ref. Part No. Description Part No. Description 04030-02 Lockwasher, 1/4 483100 Pump, RH w/Fan 48572-06 Fitting, Union 3/4-16 JIC X O-Ring 483101 Pump, LH, w/Fan (incl. #17) 481164 Cap, Hydraulic Tank 484458 Hose Assembly 481507 Insert, Filler Neck 462845...

  • Page 74: Sttii Fuel System

    Section 8 STTII FUEL SYSTEM Kohler - EFI Briggs & Stratton - 35BVAC To Fuel Pump Kawasaki - FD750D Carburetor Kawasaki - FD791D Injector FD850D Fuel Return To Engine Purge Port Purge A*** Tank 23 10 15 * - Available Through Engine Manufacturer Only ** - Briggs &...
  • Page 75 Section 8 STTII FUEL SYSTEM Ref. Part No. Description 485621 Canister, 1.0 Liter 427051 Bracket, Carbon Canister 04003-02 Bolt, Carriage 1/4-20 x 3/4” 04019-02 Nut, Serrated Flange 1/4-20 484345 Hose, 3/16 (order by inch) 48059-05 Clamp, Vapor Recovery Hose 3/16 48030-22 Clamp, Cable - .375 Dia.

  • Page 76: Bdp-16A Hydraulic Pump Assembly With Cooling Fan

    Section 8 BDP-16A HYDRAULIC PUMP ASSEMBLY with COOLING FAN PORT "A" SIDE PORT "B" SIDE...
  • Page 77 Section 8 BDP-16A HYDRAULIC PUMP ASSEMBLY with COOLING FAN Ref. Part No. Description HG70740 Overhaul Seal Kit HG52059 Shroud HG72158 Cylinder Block Kit - 16cc HG51462 Thrust Ball Bearing Assembly HG51436 Variable Swashplate HG2000015 Slot Guide HG2000014 Trunnion Arm HG2000025 Block Spring HG2000024 Block Thrust Washer...

  • Page 78: Sttii Electrical System

    Section 8 STTII ELECTRICAL SYSTEM CHOKE (if applies) THROTTLE ENGINE STARTER GROUND...
  • Page 79 Section 8 STTII ELECTRICAL SYSTEM Ref. Part No. Description 485643 Wire Harness, STTII-BV (Briggs & Stratton) 485644 Wire Harness, STTI-EFI (Kohler) 485645 Wire Harness, STTII-KA (Kawasaki) 485646 Wire Harness, STTII-FD791 DFI (Kawasaki) 485723 Wire Harness, STTII-FD850D DFI (Kawasaki) 483366 Key, Ignition 462069 Key Assy., w/Fob 48017-04...

  • Page 80: Replacement Decals And Information Plates

    Section 8 REPLACEMENT DECALS AND INFORMATION PLATES FORWARD REVERSE 481568 WARNING INSTALL BELT COVER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL STT 2013 Decals 1...
  • Page 81 Section 8 REPLACEMENT DECALS AND INFORMATION PLATES Ref. Part No. Description 483192 Decal, Danger - Spinning Blades 483406 Decal, Warning - Rotating Blades 483200 Decal, 52 Velocity Plus 483201 Decal, 61 Velocity Plus 481956 Decal, 72 Advantage 483693 Decal, 72 Velocity Plus 484281 Decal, Fuel Tank 484293...

  • Page 82: Electrical Schematic - Kawasaki 25Ka

    Section 8 ELECTRICAL SCHEMATIC - KAWASAKI 25KA Position Key Switch Legend Position PTO Switch Legend G + M + A H + F C + D B + L + A B + C G + H E + A START B + L + S TIGER EYE...

  • Page 83: Electrical Schematic - Kawasaki 26Dfi

    Section 8 ELECTRICAL SCHEMATIC - KAWASAKI 26DFI Position Key Switch Legend Position PTO Switch Legend G + M + A H + F C + D B + L + A B + C G + H E + A START B + L + S TIGER EYE...

  • Page 84: Electrical Schematic - Kohler 26Efi

    Section 8 ELECTRICAL SCHEMATIC - KOHLER 26EFI Position Key Switch Legend Position PTO Switch Legend G + M + A H + F C + D B + L + A B + C G + H E + A START B + L + S KEY SWITCH...

  • Page 85: Electrical Schematic - Kawasaki 31Dfi

    Section 8 ELECTRICAL SCHEMATIC - KAWASAKI 31DFI Position Key Switch Legend Position PTO Switch Legend G + M + A H + F C + D B + L + A B + C G + H E + A START B + L + S TIGER EYE...

  • Page 86: Electrical Schematic - Briggs & Stratton 35Bv

    Section 8 ELECTRICAL SCHEMATIC - BRIGGS & STRATTON 35BV Position PTO Switch Legend Position Key Switch Legend G + M + A H + F C + D B + L + A B + C G + H E + A START B + L + S TIGER EYE...

  • Page 87: Notes

    Section 8 NOTES...

  • Page 88: Limited Warranty - Commercial Equipment

    Cutter decks are warranted against cracking for a period of three (3) years. (parts and labor 1st and 2nd year; parts only 3rd year.) The repair or replacement of the cutter deck will be at the option of Scag Power Equipment. We reserve the right to request compo- nents for evaluation.
  • Page 89 © 2016 Scag Power Equipment Division of Metalcraft of Mayville, Inc.

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