Scag Power Equipment STT-31EFI-SS Maintenance Considerations & Storage, Using a spark arrestor

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Section 2

2.6Maintenance Considerations & Storage

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.Disengage drives, lower implement, set parking brake, stop engine and remove key or disconnect spark plug wire to prevent accidental starting of the engine when servicing or adjusting the machine. Wait for all movement to stop before adjusting, cleaning or repairing.

3.Disconnect battery or remove spark plug wire before making any repairs. Disconnect the negative terminal first and the positive last. Reconnect the positive first and the negative last.

4.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.

5.Do not change the engine governor settings or overspeed the engine. See the engine operator's manual for information on engine settings.

6.To reduce fire hazard, keep the cutting units, drives, muffler and engine free of grass, leaves, excessive grease, oil and dirt.

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. Use a Blade Buddy, 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.

11.Use jack stands to support components when required.

12.Carefully release pressure from components with stored energy.

WARNING

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.

13.Let the engine cool before storing.

14.DO NOT store the machine near an open flame.

15.Shut off fuel while storing or transporting.

16.DO NOT store fuel near flames or drain indoors.

17.Charge batteries in an open, well ventilated area, away from spark and flames. Unplug charger before connecting or disconnecting from battery. Wear protective clothing and use insulated tools.

2.7 Using a spark arrestor

The engine in this machine is not equipped with a spark arrestor muffler. It is in violation of California Public Resource Code Section 4442 to use or operate this engine on or near any forest covered, brush covered or grass covered land unless the exhaust system is equipped with a spark arrestor meeting any applicable local or state laws. Other states or federal areas may have similar laws. Check with your state or local authorities for regulations pertaining to these requirements.

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Contents OPERATOR’S Manual STT61V-31EFI-SS With a serial number E3700001 to E3799999STT-31EFI-SS Table of Contents Adjustments Following SectionUSE only Scag Approved Attachments and Accessories General InformationIntroduction Direction ReferenceSymbols Symbol DescriptionSTT Models Safety Information Signal WordsThis symbol means Attention! Become Alert! Your Signal WordOperation Considerations Section Roll-Over Protection System Foldable Roll-over protection system if equippedFoldable Roll-Over Protection System Maintenance Considerations & Storage Using a spark arrestorSafety And Instructional Decals Install Belt COvER Before Specifications Power HeadEngine ElectricalWeights And Dimensions Cutter DeckHydraulic System Operating Instructions Controls And Instrument IdentificationSafety Interlock System Dump Valve ControlInitial Run-In Procedures Starting The EngineGround Travel And Steering Forward TravelEngaging The Deck Drive Cutter Blades Reverse TravelHillside Operation Parking The MowerAfter Operation Removing Clogged MaterialAdjusting Cutting Height Moving Mower With Engine StoppedRecommendations For Mowing Adjusting The Steering Levers Adjusting The Height Adjust PedalTowing Optional Hitch Accessory Troubleshooting Cutting Conditions Condition Cause CureE v e n C u t o n F l at Ground Wavy High-Low Appearance, ScallopedCut, or Rough Contour Sloping Ridge AcrossScalping Blades Hitting Dirt or CuttingVery Close To the GroundStep Cut Ridge in Center Cutting pathAdjustments Brake AdjustmentNeutral Adjustment RH Steering Control Rod AdjustmentThrottle Control and Choke Adjustments Tracking AdjustmentCutter Deck Level Cutter Deck PitchCutter Deck Height Adjustment Cutter Deck HeightCustom-Cut Baffle Adjustment Position Custom-Cut Baffle Adjustment Early ModelsPosition Custom-Cut Baffle Adjustment Current Production Position Custom-Cut Baffle Adjustment Electric clutch adjustment Clutch Air Gap AdjustmentMaintenance Maintenance Chart Recommended Service IntervalsProcedure Comments Break-In 100 200 500 First HoursLubrication Location Lubrication Interval Lubricant NO. PlacesLubrication Fitting Points Checking Hydraulic Oil Level Changing Hydraulic OilEngine Oil Engine Fuel SystemEngine Air Cleaner Cleaning and/or Replacing Air Cleaner ElementReplacing In-Line Fuel Filter Elements Battery Charging the BatteryBattery Electrolyte First AID Jump StartingBlade Replacement Drive BeltsCutter Blades Blade InspectionTires Cutter Deck GearboxChecking Lubricant Level Cleaning the Radiator Debris Screen Cooling SystemChanging Lubricant Checking Coolant LevelBody, Deck, And Upholstery Checking The Fan Belt TensionIllustrated Parts List Scag Approved Attachments And AccessoriesIllustrated Parts List 61V & 72VS Cutter Decks Description Cutter Deck Controls Cutter Deck Controls Sheet Metal Components Fender Weldment, RH Bolt, Hex Hd., 5/16-18 x 1, Zinc 43606 STT ROLL-OVER Protection System with Suspension Seat STT ROLL-OVER Protection System with Suspension Seat Deck Drive Components Belt Guard, Rear Hinge, Belt Guard 481309 Latch, Hood 482845 Engine & Attaching Parts 31HP-EFI Kohler Available through the individual engine manufacturer Brake and Steering Components Grip, Handle Bar Fuel and Hydraulic System Kohler 31EFI 24 403 BDP-16A Hydraulic Pump Assembly with Cooling FAN HG70924 Charge Pump Kit .19 STD. Splined HG51457 Electrical System 31HP-EFI Kohler Electrical System 31HP-EFI Kohler Heavy-Duty Commercial STT-EFI Decals Page2 Electrical Schematic Kohler 31HP EFI Limited Warranty Commercial Equipment Garantía Limitada Equipo Comercial Tapicería y plataforma Cuerpo Radiador del desechos de criba la de Limpieza .BVentilador del correa la de tensión la de Verificación .C NotaLa de cambios de Caja Refrigeración de SistemaCorte de plataforma Llantas Cuchilla la de Reemplazo .CNota Cuchilla la de Reemplazo .8-7 Figura Corte de cuchillas con trabajar al ojos yCorte de Cuchillas Transmisión de CorreasCuchilla la de Inspección .A Puente por Arranque .BBatería Batería la de Carga .AAgua con Enjuague externo Contacto Batería DE Electrolito Para Auxilios PrimerosMotor del aire de Filtro Aire de filtro del elemento del reemplazo y/o Limpieza .ALínea en combustible de filtro Del elementos los de Reemplazo .BMotor del combustible de Sistema Motor del AceiteHidráulico Sistema Hidráulico aceite de nivel del Verificación .AHidráulico aceite de Filtro .3-7 Figura Conexión de puntos de Lubricación .1-7 Figura Lubricación Ciones Lubricación Ubica Lubricante Ubicación DE IntervaloHoras Mantenimiento Recomendados servicio de Intervalos mantenimiento de TablaMontaje de accesorios de Ubicación Montaje de Ranura Personalizado corte de deflector del Ajuste Posiciones 7 de personalizado corte de deflector del AjustePosiciones 3 de personalizado corte de deflector del Ajuste Corte de plataforma la de Altura Corte de plataforma la de Tope .8-6 FiguraCorte de Plataforma la de altura de Ajuste .7-6 FiguraCorte de plataforma la de Inclinación Corte de plataforma la de NivelCorte de Plataforma la de nivel del Ajuste .5-6 Figura Estrangulación y aceleración De controles los de AjustesAlineación de Ajuste Desplazamiento de Ajustes Neutral AjusteAjustes Estacionamiento de freno del AjusteFreno de varilla la de Ajuste .2-6 Figura Freno del vAjuste .1-6 FiguraCorte de trayectoria La de ancho del travésInclinadas Crestas Inclinado CorteLa de ancho lo a Inclinadas SalientesIrregular perfil o Volado corte onduladaCorte de trayectorias Entre cortar sin céspedDe Franjas Vetas La en cortar sin céspedOpcional enganche de accesorio Remolque Altura la de ajuste de pedal del Ubicaciones .8-4 FiguraAltura de ajuste de pedal del Ajuste Dirección de palancas las de AjusteDirección De palancas las de Ajuste .7-4 Figura Plataforma la de liberación de Palanca .6-4 FiguraCorte de altura la de Ajuste Césped elCortar para Recomendaciones Detenido motor el con cortacésped del DesplazamientoAtascado material del Retriro Operación la de DespuésCortacésped del Estacionamiento Cuesta una en OperaciónCorte de cuchillas plataforma de transmisión la de Conexión Reversa en DesplazamientoCortador Del accionamiento de Interruptor .3-4 FiguraDirección y terreno el en Desplazamiento Motor del ArranqueInicial arranque de Procedimientos Adelante hacia DesplazamientoSeguridad de bloqueo de Sistema Descarga de válvula de Control .2-4 FiguraLa Indica .1-4 Figura combustible de Indicador Usado .1-4 Figura dirección de derecho ControlOperación DE Instrucciones Instrumentos e controles de IdentificaciónInstrumentos e Controles .1-4 Figura Dimensiones y Pesos ProductividadEspecificaciones Potencia de CabezalEléctrico Sistema MotorREvErSA AdELAntE Seguridad de y instructivas CalcomaníasChispas de supresor un Utilice Almacenamiento y mantenimientoDe Consideraciones Muerte la o graves lesiones ocasionar Mantener y inspeccionar de incumplimiento ElVuelco contra protección de plegable Sistema .1-2 Figura Vuelco contra protección de Sistema Equipado viene si vuelco contraProtección de Plegable Sistema Peligro Operación de Consideraciones Seguridad DE InformaciónOperación la a previas Consideraciones Señalización de PalabrasSímbolos STT ModelosDescripción Símbolo General Información Instrucciones de ReferenciaScag POR Aprobados Dispositivos USE Sólo Sección Sigue Comercial Equipo Limitada Garantía List Parts Illustrated 8 SecciónMantenimiento 7 Sección Ajustes 6 SecciónOperación DE Instrucciones 4 Sección Especificaciones 3 SecciónSeguridad DE Información 2 Sección General Información 1 Sección72VS-SMT 61V-SMTSS-31EFI-STT SS-31EFI-STT61VOperador DEL Manual

STT-31EFI-SS specifications

Scag Power Equipment is renowned for producing high-quality commercial mowing equipment, and the STT-31EFI-SS stand-on mower is no exception. Designed with professional landscapers in mind, the STT-31EFI-SS offers a perfect blend of power, efficiency, and maneuverability.

One of the standout features of the STT-31EFI-SS is its 31 hp EFI (Electronic Fuel Injection) engine. This powerhouse engine not only delivers impressive power but also enhances fuel efficiency. The EFI technology ensures that the engine operates at optimal performance by automatically adjusting the air-to-fuel ratio under varying conditions. This results in smoother starts, improved throttle response, and reduced emissions, making the mower both environmentally friendly and cost-effective in the long run.

The STT-31EFI-SS features a durable construction built to withstand the rigors of commercial use. Its robust steel frame and heavy-duty components are designed for maximum longevity. Moreover, the mower is equipped with Scag's cutting-edge Hydro-Gear ZT-3400 transmission, which offers exceptional speed and agility. This transmission allows operators to navigate tight spaces with ease and provides a top speed of up to 10.5 mph, making it ideal for large properties or demanding mowing tasks.

Operator comfort is another key aspect of the STT-31EFI-SS. The stand-on design promotes better visibility and quick maneuverability, enabling operators to navigate obstacles with confidence. The padded operator platform and adjustable controls ensure a comfortable experience, even during extended use. Additionally, the mower’s low center of gravity enhances stability on slopes and uneven terrain.

One of the most notable characteristics of the STT-31EFI-SS is its advanced cutting deck. The mower features a 48", 52", or 61" Velocity Plus cutting deck, which is known for delivering a superior cut and impressive grass dispersal. The deck is engineered for optimal airflow, enabling precision mowing while preventing clumping. This technology ensures that grass clippings are evenly distributed, resulting in a healthier lawn appearance.

In conclusion, the Scag STT-31EFI-SS stand-on mower integrates powerful performance, innovative engineering, and comfort. Featuring a reliable EFI engine, robust construction, and exceptional maneuverability, this mower stands out as an excellent choice for professional landscapers seeking efficiency and reliability in their equipment.
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