Scag Power Equipment STT-31BSG Operator's Manual
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Scag Power Equipment STT-31BSG Operator's Manual

Scag Power Equipment STT-31BSG Operator's Manual

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See also: Operator's Manual
MODEL STT-31BSG
MODEL STT-31BSG
MODEL STT-31BSG
MODEL STT-31BSG
MODEL STT-31BSG
THIS MANUAL CONTAINS 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 THAT THIS
BOOK COVERS ARE CONTAINED ON THE
INSIDE COVER. BEFORE OPERATING YOUR
MACHINE, PLEASE READ ALL THE INFOR-
MATION ENCLOSED.
PART NUMBER

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Summary of Contents for Scag Power Equipment STT-31BSG

  • Page 1 MODEL STT-31BSG MODEL STT-31BSG MODEL STT-31BSG MODEL STT-31BSG MODEL STT-31BSG THIS MANUAL CONTAINS 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.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SUBJECT PAGE Section 1 - General Information Introduction ..........................1 Directional Reference ......................1 Servicing the Engine and Drive Train Components ..............1 Section 2 - Safety Information Symbols ..........................2-3 Introduction ..........................4 Signal Words ...........................4 Before Operation Considerations ...................4 Operation Considerations ......................5 Maintenance Considerations ....................6 Safety and Instructional Decals ....................7...

  • Page 3: Subject Page

    Deck Drive Components ......................42-43 Radiator, Coolers & Engine Brackets.................44-45 Brake & Steering Components..................46-47 Fuel & Hydraulic System ......................48-49 Electrical System ........................50-51 Hydraulic Pump Assembly - BDP-21L ..................52-53 Wire Harness, STT-31BSG ......................54 Replacement Decals ......................... 55-56...

  • Page 4: Section 1 - General Information

    If additional information or service is needed, contact incurring any obligation. your Scag Power Equipment Dealer. 1.2 DIRECTION REFERENCE We encourage you to contact your dealer for repairs. All Scag dealers are informed of the latest methods to The “Right”...

  • Page 5: Section 2 - Safety Information

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

  • Page 6: Section 3 - Specifications

    Section 3 SPECIFICATIONS SCAG "SABRE TOOTH TIGER" ZERO-TURN RIDER MODEL: STT-31BSG ENGINE General Type: Heavy duty industrial commercial Brand: Briggs Daihatsu Vanguard Liquid Cooled 31 HP Model: DM950G Horsepower: 31HP @ 3600 RPM Type: Water cooled 4 cycle, overhead valve, 3 cylinder, gas engine...

  • Page 7: Cutter Deck

    Section 3 SPECIFICATIONS (con't) SCAG "SABRE TOOTH TIGER" ZERO-TURN RIDER MODEL: STT-31BSG CUTTER DECK Type: SMST-72A ("Advantage") & SMST-61A ("Advantage"): Floating, adjustable anti-scalping, hybrid design combines out-front and belly-mount designs. "Advantage" - special extended front edge allows Bahia or other tough grasses to enter the deck standing upright.

  • Page 8: Section 4 - Operating Instructions

    Section 4 OPERATING INSTRUCTIONS 1. Ignition Switch (Figure 4-1). The ignition switch CAUTION: is used to start the engine and has three positions; OFF, ON, and START. Do not attempt to operate this mower unless you have read this manual. Learn the location and 2.

  • Page 9: Safety Interlock System

    Section 4 5. Voltmeter (Figure 4-1). Indicates the condition of the charging system. When the engine is running, in normal operating conditions, the needle should be in the 12 to 14 volt range. DUMP VALVE CONTROL 6. Oil Pressure (Figure 4-1). Indicates engine oil pressure.

  • Page 10: Initial Run-In Procedures

    Section 4 4.3 INITIAL RUN-IN PROCEDURES (First 7. Turn the ignition key to the START position and release the key as soon as the engine starts. Do not Day of Use or Approximately 10 Hours) hold the key in the START position for more than 15 seconds at a time.

  • Page 11: Engaging The Deck Drive

    Section 4 To steer the mower left while traveling forward, pull the To steer left while traveling in reverse, allow the left left steering lever back. The further the lever is pulled steering control lever to move forward. The further the back, the quicker the mower will turn left.

  • Page 12: Hillside Operation

    Section 4 4. Always operate the engine at full throttle to properly 4.9 AFTER OPERATION maintain cutting speed. If the engine starts to lug down, reduce the forward speed and allow the 1. Wash the entire mower after each use. Do not use engine to operate at maximum RPM.

  • Page 13: Removing Clogged Material

    Section 4 4.10 REMOVING CLOGGED MATERIAL 5. When mowing wet or tall grass, mow the grass twice. Raise the mower to the highest setting for the first pass and then make a second pass to the desired height. ROTATING BLADES 6.

  • Page 14: Cutter Deck Adjustments

    Section 6 3. Tighten the serrated hex nut to secure the cutter 6.6 CUTTER DECK ADJUSTMENTS deck in the proper position. Cutter deck level, pitch and height are set at the factory. However, if these adjustments should ever need to be Cutter Deck Pitch made, the following procedures will aid in obtaining the proper cutter deck adjustment.
  • Page 15 Section 6 Cutter Deck Height 3. Check the cutter deck cutting height by placing the lanyard pin in the 3" position on the cutting height The cutter deck height adjustment is made to ensure that index. Release the deck from the transport position the cutter deck is cutting at the height indicated on the and allow the deck to move to the 3"...
  • Page 16 Section 7 MAINTENANCE 7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS HOURS Break-In 40 100 200 500 Procedure Comments (First 10) Check all hardware for tightness Check hydraulic oil level See paragraph 7.3 Check all belts for proper alignment See paragraph 7.8 Change engine oil and filter See paragraph 7.4 (First 5)
  • Page 17 Section 7 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS (CONT'D) HOURS Break-In 40 100 200 500 Procedure Comments (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...

  • Page 18: Lubrication Fitting Points

    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) 390S0145-1 Figure 7.1 Lubrication Fitting Points...

  • Page 19: Hydraulic System

    Section 7 7.3 HYDRAULIC SYSTEM B. Changing Hydraulic Oil A. Checking Hydraulic Oil Level The hydraulic oil should be changed after every 500 hours or annually, whichever occurs first. The oil should also be changed if the color of the fluid has become black The hydraulic oil level should be checked after the first or milky.

  • Page 20: Cutter Deck Controls

    CUTTER DECK CONTROLS CUTTER DECK STT99CDC-1...
  • Page 21 CUTTER DECK CONTROLS Ref. Part Description 04041-07 Flatwasher, 3/8” 481764 Link, Deck Lift 481765 Rod End, Female - 1/2-20 RH 481766 Rod End, Female - 1/2-20 LH 04020-27 Nut, Jam 1/2-20 RH 04020-28 Nut, Jam 1/2-20 LH 04021-09 Nut, 3/8-16 Elastic Stop 482429 Slide Weldment, Height Adjustment 43391...

  • Page 22: Sheet Metal Components

    SHEET METAL COMPONENTS 2001 STTBSG-SMC-1...

  • Page 23: Battery

    SHEET METAL COMPONENTS Ref. Part Ref. Part Description Description 451481 Fender Weldment, RH 45936 Extention Weldment, Caster 52A (LH) 04001-09 Bolt, Hex Head, 5/16-18 x 1, Zinc 45937 Extention Weldment, Caster 52A (RH) & 61A (LH &RH) Spacer 45939 Extention Weldment, Caster 72A (LH) Flatwasher, 451448 Seat Plate Weldment...

  • Page 24: Deck Drive Components

    DECK DRIVE COMPONENTS To A ENGINE FLYWHEEL To B REAR ENGINE 55 54 99STTBSG-DDC-1...
  • Page 25 DECK DRIVE COMPONENTS Ref. Part Ref. Part No. No. Description No. No. Description 461079 Idler Arm 422845 Belt Guard, Rear 04001-46 Bolt, Hex Head 3/8-16 x 2.25” 481531 Hinge, Rear Belt Guard 04019-04 Nut, Serr. Flg. 3/8-16 481309 Latch, Hood 48181 Pulley, PTO Idler 04003-07...

  • Page 26: Radiator, Coolers & Engine Brackets

    RADIATOR, COOLERS & ENGINE BRACKETS TO "A" ATTACHES FRAME 2k STTBSG-RCEB-1...
  • Page 27 RADIATOR, COOLERS & ENGINE BRACKETS Ref. Part No. No. Description 481810 Radiator 481742 Hose, Upper Radiator 481743 Hose, Lower Radiator 04030-03 Lockwasher, 5/16 (.317 x .586 x .078) Helical Spring 422701 Bracket, Air Cleaner 422697 Bracket, Engine Mounting LH 422698 Bracket, Engine Mounting RH 422702 Bracket, Radiator Mounting...

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