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OPERATOR’S MANUAL
MODEL STT-31BSD
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.
© 2004 PART NO. 03153
SCAG POWER EQUIPMENT PRINTED 10/04
DIVISION
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WARNING: 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 wires 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 oth
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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 Informat
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TABLE OF CONTENTS (CONT'D) SUBJECT PAGE Section 6 - Adjustments 6.1 Parking Brake Adjustment .................................................................................................... 22 6.2 Travel Adjustments ...............................................................................................................22 6.3 Throttle Control and Choke Adjustments .............................................................................. 24 6.4 Belt Adjustment .....................
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Section 1 GENERAL INFORMATION Scag approved attachments and accessories: 1.1 INTRODUCTION GC-STT (p/n 9049, 9039) GC-STT-CS (p/n 9053, 9041) Your mower was built to the highest standards in the Mulch Plate (p/n 9261, 9262) industry. However, the prolonged life and maximum Hurricane Mulch (p/n 9266, 9267) efficiency of your mower depends on you following the Cup Holder (p/n 9240) operating, maintenance and adjustment instructions in this STT Hitch (p/n 9242) manual. STT Bumper (p/n 9256) STT -
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ISO Symbols CE Mark SYMBOL DESCRIPTION SYMBOL DESCRIPTION Choke Transmission Parking Brake Spinning Blade 48071S On/Start Spring Tension on Idler Off/Stop Oil WARNING Falling Hazard FALLING HAZARD USE ONLY SCAG APPROVED RIDING ATTACHMENTS 481109 SEE OPERATOR'S MANUAL 2
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SYMBOL DESCRIPTION SYMBOL DESCRIPTION Slow Fast Cutting Element - Basic Symbol Continuously Variable - Linear Cutting Element - Engage Pinch Point 481039S Hourmeter/Elapsed Operating Hours Cutting Element - Disengage Read Operator's Manual Thown Object Hazard Keep Bystanders Away 3
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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 hazardous situation exists on or near the machine that bodily injury or death. Hazard control and accident prevention are dependent upon the awareness, concern, could result in high probability of death or irrepairable injury if proper precautions are not taken. prudence, and proper training of the perso
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Section 2 2.3 BEFORE OPERATION 12. DO NOT add fuel to a running or hot engine. Allow CONSIDERATIONS (CONT'D) the engine to cool for several minutes before adding fuel. 6. If the operator(s) or mechanic(s) cannot read English or Spanish, it is the owner's responsibility to explain 13. Keep flammable objects (cigarettes, matches, etc.), this material to them. open flames and sparks away from the fuel tank and fuel container. 7. DO NOT wear loose fitting clothing. Loose clothing, jewelry or long h
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Section 2 13. Take all possible precautions when leaving the machine 2.4 OPERATION CONSIDERATIONS unattended, such as disengaging the mower, lowering (CONT'D) the attachments, setting the parking brake, stopping the engine, and removing the key. 3. To prevent tipping or loss of control, start and stop smoothly, avoid unnecessary turns and travel at reduced 14. Disengage power to the attachments when transporting speed. or when not in use. 4. When using any attachment, never direct the discharge
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Section 2 This mower has been designed for good traction and INSPECT BUCKLE & LATCH stability under normal mowing conditions. However, caution must be used when traveling on slopes, especially when the grass is wet. Do not mow on wet grass. Wet grass reduces traction and steering control. INSPECT WEBBING Any or all parts of the Roll Over Protection System MUST NOT be removed. Failure to adhere to this guideline could result in injury or death. Figure 2-1 Seat Belt Inspection The potential exposu
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Section 2 7. Park the machine on level ground and engage the parking brake. 8. NEVER allow untrained personnel to service the machine. 9. Use care when checking blades. Wrap the blade(s) or wear gloves and use caution when servicing blades. Only replace blades. NEVER straighten or weld blades. 10. Keep all parts in good working condition. Replace all worn or damaged decals. Figure 2-2. STT-BSD With Roll Over 11. Use jack stands to support components when Protection System. required. 2.6 MAIN
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Section 2 2.7 SAFETY AND INSTRUCTIONAL DECALS WARNING INSTALL BELT COVER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL 481039 481039 FORWARD 482285 R F REVERSE 481568 482286 482290 482834 483046 482710 390S0150E- Rev 1 9
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Section 3 SPECIFICATIONS SCAG “SABRE TOOTH TIGER” ZERO-TURN RIDER MODEL: STT– 31BSD ENGINE General Type: Heavy Duty Industrial/Commercial Turbo Charged Diesel Brand: Briggs Daihatsu Vanguard Liquid Cooled 31 HP Model: DM950D Horsepower: 31 HP @ 3600 RPM Type: water cooled 4 cycle, overhead valve, 3 cylinder, diesel engine Displacement: 952cc Cylinders: 3 inline sleeves Governor: High-speed flyweight governor, runs faster than engine crankshaft, provides precision speed governing and a steady low
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Section 3 SPECIFICATIONS (CON'T) SCAG “SABRE TOOTH TIGER” ZERO-TURN RIDER MODEL: STT– 31BSD 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 for a clean cutting. Construction: 10-gauge steel top reinforced with 7 gauge support plate, deck skirt is 7 gauge steel True Cutti
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Section 4 OPERATING INSTRUCTIONS 2. Water Seperator Indicator (Figure 4-1). Amber indicator turns on when the Water Seperator is full CAUTION: and needs to be cleaned out. Do not attempt to operate this mower unless you have read this manual. Learn the location and 3. Mower Deck Switch (Figure 4-1). Used to purpose of all controls and instruments before you engage and disengage the mower drive system. operate this mower. Pulling up on the switch will engage the deck drive. Pushing down on the
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Section 4 DUMP VALVE 6. Voltmeter (Figure 4-1). Indicates the condition of CONTROL the charging system. When the engine is running, in normal operating conditions, the needle should be in the 12 to 14 volt range. 7. Oil Pressure (Figure 4-1). Indicates engine oil pressure. Reference the engine operator's manual for further information. 8. Hourmeter (Figure 4-1). Indicates the number of 390S0141BSG hours the engine has been operated. It operates whenever the engine is running. It can be u
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Section 4 6. Move the engine throttle control to about half engine 4.3 INITIAL RUN-IN PROCEDURES (First speed. Day of Use or Approximately 10 Hours) 7. Turn the ignition key to the on position until the 1. Check all belts for proper alignment and wear at 2, 4 yellow indicator for the glow plugs goes out. Then and 8 hours. turn the ignition key to the START position and release the key as soon as the engine starts. Do not 2. Change the engine oil and oil filter after the first 5 hold the k
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Section 4 To stop the forward travel, pull the steering control levers -NOTE- back to the neutral position. The mower may not travel straight in reverse. Slight adjustments may need to be made using the steering controls. To steer the mower left while traveling forward, pull the left steering lever back. The further the lever is pulled back, the quicker the mower will turn left. To steer left while traveling in reverse, allow the left steering control lever to move forward. The further the con
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Section 4 3. To disengage the deck drive, push the switch in to 3. Keep tires properly inflated. the disengage position. 4.8 PARKING THE MOWER 4. Always operate the engine at full throttle to properly maintain cutting speed. If the engine starts to lug 1. Stop on level ground and place the steering control down, reduce the forward speed and allow the levers in the neutral position. engine to operate at maximum RPM. 5. To properly burnish the electric PTO clutch brake, 2. Disengage the cutter bl
