Scag Power Equipment STT-31EFI-SS Engaging The Deck Drive Cutter Blades, Reverse Travel

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Section 4

R

- IMPORTANT -

Do not travel forward over a curb. The mower will hang up on the curb. Raise the deck and travel backwards over the curb at a 45 degree angle. (See Section 4.1, items 12 - 14, on page 14 for cutter deck raising descriptions.)

Reverse Travel

Caution

Disengage power to the mower before backing up. Do not mow in reverse unless absolutely necessary and then only after observation of the entire area behind the mower.

Caution

Before backing up, observe the rear for persons and obstructions. Clear the area before backing up. Possible injury or property damage could occur.

To travel in reverse, pull levers inward out of the neutral lock position and pull both handles back. Keep the travel speed low while traveling in reverse.

- NOTE -

The mower may not travel straight in reverse. Slight adjustments may need to be made using the steering controls.

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

To steer right while traveling in reverse, allow the right steering control lever to move forward. The further the control is allowed to move forward, the quicker the mower will turn right.

To stop the reverse travel, allow the steering control levers to return to the neutral position. If the mower is to be parked, place the handles in the neutral lock position and engage the parking brake.

4.6Engaging The Deck Drive (Cutter Blades)

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.

2.Engage the deck drive by pulling out on the yellow switch, located on the instrument panel, to the engage position. See Figure 4-3.

PULL UP TO ENGAGE

PUSH DOWN TO DISENGAGE

390S0138

Figure 4-3. Cutter Engage Switch

- NOTE -

A squealing noise may be heard when engaging or disengaging the deck drive. It is caused by the electric clutch plates meshing as the mower comes up to speed. This is normal.

3.To disengage the deck drive, push the switch in to the disengage position.

4.Always operate the engine at full throttle to properly maintain cutting speed. If the engine starts to lug down, reduce the forward speed and allow the engine to operate at maximum RPM.

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Contents OPERATOR’S Manual With a serial number E3700001 to E3799999 STT61V-31EFI-SSSTT-31EFI-SS Table of Contents Following Section AdjustmentsDirection Reference USE only Scag Approved Attachments and AccessoriesGeneral Information IntroductionSymbol Description SymbolsSTT Models Signal Word Safety InformationSignal Words This symbol means Attention! Become Alert! YourOperation Considerations Section Foldable Roll-over protection system if equipped Roll-Over Protection SystemFoldable Roll-Over Protection System Using a spark arrestor Maintenance Considerations & StorageSafety And Instructional Decals Install Belt COvER Before Electrical SpecificationsPower Head EngineCutter Deck Weights And DimensionsHydraulic System Controls And Instrument Identification Operating InstructionsDump Valve Control Safety Interlock SystemForward Travel Initial Run-In ProceduresStarting The Engine Ground Travel And SteeringReverse Travel Engaging The Deck Drive Cutter BladesRemoving Clogged Material Hillside OperationParking The Mower After OperationMoving Mower With Engine Stopped Adjusting Cutting HeightRecommendations For Mowing Adjusting The Height Adjust Pedal Adjusting The Steering LeversTowing Optional Hitch Accessory Condition Cause Cure Troubleshooting Cutting ConditionsSloping Ridge Across E v e n C u t o n F l atGround Wavy High-Low Appearance, Scalloped Cut, or Rough ContourCutting path Scalping Blades HittingDirt or CuttingVery Close To the Ground Step Cut Ridge in CenterBrake Adjustment AdjustmentsRH Steering Control Rod Adjustment Neutral AdjustmentTracking Adjustment Throttle Control and Choke AdjustmentsCutter Deck Pitch Cutter Deck LevelCutter Deck Height Cutter Deck Height AdjustmentPosition Custom-Cut Baffle Adjustment Early Models Custom-Cut Baffle AdjustmentPosition Custom-Cut Baffle Adjustment Current Production Position Custom-Cut Baffle Adjustment Clutch Air Gap Adjustment Electric clutch adjustmentHours MaintenanceMaintenance Chart Recommended Service Intervals Procedure Comments Break-In 100 200 500 FirstLocation Lubrication Interval Lubricant NO. Places LubricationLubrication Fitting Points Changing Hydraulic Oil Checking Hydraulic Oil LevelEngine Fuel System Engine OilCleaning and/or Replacing Air Cleaner Element Engine Air CleanerReplacing In-Line Fuel Filter Elements Jump Starting BatteryCharging the Battery Battery Electrolyte First AIDBlade Inspection Blade ReplacementDrive Belts Cutter BladesCutter Deck Gearbox TiresChecking Lubricant Level Checking Coolant Level Cleaning the Radiator Debris ScreenCooling System Changing LubricantChecking The Fan Belt Tension Body, Deck, And UpholsteryScag Approved Attachments And Accessories Illustrated Parts ListIllustrated 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 Nota Tapicería y plataforma CuerpoRadiador del desechos de criba la de Limpieza .B Ventilador del correa la de tensión la de Verificación .CRefrigeración de Sistema La de cambios de CajaCorte de plataforma Corte de cuchillas con trabajar al ojos y LlantasCuchilla la de Reemplazo .C Nota Cuchilla la de Reemplazo .8-7 FiguraPuente por Arranque .B Corte de CuchillasTransmisión de Correas Cuchilla la de Inspección .ABatería DE Electrolito Para Auxilios Primeros BateríaBatería la de Carga .A Agua con Enjuague externo ContactoDel elementos los de Reemplazo .B Motor del aire de FiltroAire de filtro del elemento del reemplazo y/o Limpieza .A Línea en combustible de filtroMotor del Aceite Motor del combustible de SistemaHidráulico 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 Recomendados servicio de Intervalos mantenimiento de Tabla MantenimientoMontaje 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 Plataforma la de altura de Ajuste .7-6 Figura Corte de plataforma la de AlturaCorte de plataforma la de Tope .8-6 Figura Corte deCorte 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 Neutral Ajuste Desplazamiento de AjustesFreno del vAjuste .1-6 Figura AjustesEstacionamiento de freno del Ajuste Freno de varilla la de Ajuste .2-6 FiguraInclinado Corte Corte de trayectoriaLa de ancho del través Inclinadas CrestasVolado corte ondulada La de ancho lo aInclinadas Salientes Irregular perfil oLa en cortar sin césped Corte de trayectoriasEntre cortar sin césped De Franjas VetasAltura la de ajuste de pedal del Ubicaciones .8-4 Figura Opcional enganche de accesorio RemolquePlataforma la de liberación de Palanca .6-4 Figura Altura de ajuste de pedal del AjusteDirección de palancas las de Ajuste Dirección De palancas las de Ajuste .7-4 FiguraDetenido motor el con cortacésped del Desplazamiento Corte de altura la de AjusteCésped el Cortar para RecomendacionesCuesta una en Operación Atascado material del RetriroOperación la de Después Cortacésped del EstacionamientoDel accionamiento de Interruptor .3-4 Figura Corte de cuchillas plataforma de transmisión la de ConexiónReversa en Desplazamiento CortadorAdelante hacia Desplazamiento Dirección y terreno el en DesplazamientoMotor del Arranque Inicial arranque de ProcedimientosUsado .1-4 Figura dirección de derecho Control Seguridad de bloqueo de SistemaDescarga de válvula de Control .2-4 Figura La Indica .1-4 Figura combustible de IndicadorInstrumentos e controles de Identificación Operación DE InstruccionesInstrumentos e Controles .1-4 Figura Productividad Dimensiones y PesosMotor EspecificacionesPotencia de Cabezal Eléctrico SistemaSeguridad de y instructivas Calcomanías REvErSA AdELAntEAlmacenamiento 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 Señalización de Palabras Seguridad DEInformación Operación la a previas ConsideracionesSTT Modelos SímbolosDescripción Símbolo Instrucciones de Referencia General InformaciónScag POR Aprobados Dispositivos USE Sólo Ajustes 6 Sección Sección Sigue Comercial Equipo Limitada GarantíaList Parts Illustrated 8 Sección Mantenimiento 7 SecciónGeneral Información 1 Sección Operación DE Instrucciones 4 SecciónEspecificaciones 3 Sección Seguridad DE Información 2 SecciónSS-31EFI-STT61V 72VS-SMT61V-SMT SS-31EFI-STTOperador 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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