Scag Power Equipment STT-31EFI-SS operating instructions Adjusting The Steering Levers

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Section 4

3.Insert the lanyard pin into the cutting height index at the desired cutting height. Push forward on the deck lift foot lever, hold in place and pull back on the deck release lever. See Figure 4-6. Slowly release the foot pedal. A deck height decal is located on the cutting height index as an aid in adjusting the deck to the desired height. See Figure 4-5.

DECK RELEASE

LEVER

 

 

 

 

.

HEIGHTCUTTING

 

 

 

 

5

6

 

 

 

4

5 5

 

 

 

3

.

 

 

 

4 5

 

 

2

.

 

 

 

3 5

 

 

1

.

 

 

 

2 5

 

 

 

.

 

 

 

 

1 5

 

 

 

 

390S0151-1

Figure 4-6. Deck Release Lever

4.14 Adjusting The Steering Levers

1.Position the seat to the desired location.

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.

3.If adjustment of the steering levers is needed, use the following instructions to adjust.

A.Loosen the tension knob on the lever assembly.

B.Rotate the steering lever forward or backward to achieve the optimum operating position.

C.Tighten the tension knob and repeat on the opposite side.

D.While in the operator's position, bring the steering levers out of the neutral lock position and check to

make sure both levers are even before operating.

TENSION kNOB

ROTATE

LEvER

TENSION kNOB

Figure 4-7. Adjusting Steering Levers

4.The control handle can also be adjusted in two different positions. If necessary, remove the two bolts securing the control handle to the control lever. Install the handle in the desired position.

4.15Adjusting The Height Adjust Pedal

1.Position the seat to the desired location.

2.While in the operator's position without the engine running, push down on the height adjust pedal to check for full function control.

3.The height adjust pedal can be located in three (3) different positions for operator comfort and control. See Figure 4-8.

1

25.1

45.335.2

55.4

CUTTINGHEIGHT65.5

390S0140-2

HEIGHT ADJUSTMENT PEDAL LOCATIONS

Figure 4-8. Height Adjust Pedal Locations

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Contents OPERATOR’S Manual With a serial number E3700001 to E3799999 STT61V-31EFI-SSSTT-31EFI-SS Table of Contents Adjustments Following SectionIntroduction USE only Scag Approved Attachments and AccessoriesGeneral Information Direction ReferenceSymbol Description SymbolsSTT Models This symbol means Attention! Become Alert! Your Safety InformationSignal Words 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 Engine SpecificationsPower Head ElectricalCutter Deck Weights And DimensionsHydraulic System Operating Instructions Controls And Instrument IdentificationSafety Interlock System Dump Valve ControlGround Travel And Steering Initial Run-In ProceduresStarting The Engine Forward TravelEngaging The Deck Drive Cutter Blades Reverse TravelAfter Operation Hillside OperationParking The Mower Removing Clogged MaterialMoving Mower With Engine Stopped Adjusting Cutting HeightRecommendations For Mowing Adjusting The Steering Levers Adjusting The Height Adjust PedalTowing Optional Hitch Accessory Troubleshooting Cutting Conditions Condition Cause CureCut, or Rough Contour E v e n C u t o n F l atGround Wavy High-Low Appearance, Scalloped Sloping Ridge AcrossStep Cut Ridge in Center Scalping Blades HittingDirt or CuttingVery Close To the Ground 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 HeightPosition Custom-Cut Baffle Adjustment Early Models Custom-Cut Baffle AdjustmentPosition Custom-Cut Baffle Adjustment Current Production Position Custom-Cut Baffle Adjustment Electric clutch adjustment Clutch Air Gap AdjustmentProcedure Comments Break-In 100 200 500 First MaintenanceMaintenance Chart Recommended Service Intervals HoursLubrication Location Lubrication Interval Lubricant NO. PlacesLubrication Fitting Points Checking Hydraulic Oil Level Changing Hydraulic OilEngine Oil Engine Fuel SystemCleaning and/or Replacing Air Cleaner Element Engine Air CleanerReplacing In-Line Fuel Filter Elements Battery Electrolyte First AID BatteryCharging the Battery Jump StartingCutter Blades Blade ReplacementDrive Belts Blade InspectionCutter Deck Gearbox TiresChecking Lubricant Level Changing Lubricant Cleaning the Radiator Debris ScreenCooling System 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 Ventilador del correa la de tensión la de Verificación .C Tapicería y plataforma CuerpoRadiador del desechos de criba la de Limpieza .B NotaRefrigeración de Sistema La de cambios de CajaCorte de plataforma Nota Cuchilla la de Reemplazo .8-7 Figura LlantasCuchilla la de Reemplazo .C Corte de cuchillas con trabajar al ojos yCuchilla la de Inspección .A Corte de CuchillasTransmisión de Correas Puente por Arranque .BAgua con Enjuague externo Contacto BateríaBatería la de Carga .A Batería DE Electrolito Para Auxilios PrimerosLínea en combustible de filtro Motor del aire de FiltroAire de filtro del elemento del reemplazo y/o Limpieza .A Del elementos los de Reemplazo .BMotor del combustible de Sistema Motor del AceiteHidráulico aceite de nivel del Verificación .A Hidráulico SistemaHidráulico aceite de Filtro .3-7 Figura Conexión de puntos de Lubricación .1-7 Figura Ciones Lubricación Ubica Lubricante Ubicación DE Intervalo LubricaciónHoras Mantenimiento Recomendados servicio de Intervalos mantenimiento de TablaMontaje de accesorios de Ubicación Montaje de Ranura Posiciones 7 de personalizado corte de deflector del Ajuste Personalizado corte de deflector del AjustePosiciones 3 de personalizado corte de deflector del Ajuste Corte de Corte de plataforma la de AlturaCorte de plataforma la de Tope .8-6 Figura Plataforma la de altura de Ajuste .7-6 FiguraCorte de plataforma la de Nivel Corte de plataforma la de InclinaciónCorte de Plataforma la de nivel del Ajuste .5-6 Figura De controles los de Ajustes Estrangulación y aceleraciónAlineación de Ajuste Desplazamiento de Ajustes Neutral AjusteFreno de varilla la de Ajuste .2-6 Figura AjustesEstacionamiento de freno del Ajuste Freno del vAjuste .1-6 FiguraInclinadas Crestas Corte de trayectoriaLa de ancho del través Inclinado CorteIrregular perfil o La de ancho lo aInclinadas Salientes Volado corte onduladaDe Franjas Vetas Corte de trayectoriasEntre cortar sin césped La en cortar sin céspedOpcional enganche de accesorio Remolque Altura la de ajuste de pedal del Ubicaciones .8-4 FiguraDirección De palancas las de Ajuste .7-4 Figura Altura de ajuste de pedal del AjusteDirección de palancas las de Ajuste Plataforma la de liberación de Palanca .6-4 FiguraCortar para Recomendaciones Corte de altura la de AjusteCésped el Detenido motor el con cortacésped del DesplazamientoCortacésped del Estacionamiento Atascado material del RetriroOperación la de Después Cuesta una en OperaciónCortador Corte de cuchillas plataforma de transmisión la de ConexiónReversa en Desplazamiento Del accionamiento de Interruptor .3-4 FiguraInicial arranque de Procedimientos Dirección y terreno el en DesplazamientoMotor del Arranque Adelante hacia DesplazamientoLa Indica .1-4 Figura combustible de Indicador Seguridad de bloqueo de SistemaDescarga de válvula de Control .2-4 Figura Usado .1-4 Figura dirección de derecho ControlInstrumentos e controles de Identificación Operación DE InstruccionesInstrumentos e Controles .1-4 Figura Dimensiones y Pesos ProductividadEléctrico Sistema EspecificacionesPotencia de Cabezal MotorREvErSA AdELAntE Seguridad de y instructivas CalcomaníasAlmacenamiento y mantenimiento Chispas de supresor un UtiliceDe Consideraciones Mantener y inspeccionar de incumplimiento El Muerte la o graves lesiones ocasionarVuelco contra protección de plegable Sistema .1-2 Figura Equipado viene si vuelco contra Vuelco contra protección de SistemaProtección de Plegable Sistema Peligro Operación de Consideraciones Operación la a previas Consideraciones Seguridad DEInformación Señalización de PalabrasSTT Modelos SímbolosDescripción Símbolo Instrucciones de Referencia General InformaciónScag POR Aprobados Dispositivos USE Sólo Mantenimiento 7 Sección Sección Sigue Comercial Equipo Limitada GarantíaList Parts Illustrated 8 Sección Ajustes 6 SecciónSeguridad DE Información 2 Sección Operación DE Instrucciones 4 SecciónEspecificaciones 3 Sección General Información 1 SecciónSS-31EFI-STT 72VS-SMT61V-SMT 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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