Scag Power Equipment STT-31EFI-SS Moving Mower With Engine Stopped, Recommendations For Mowing

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Section 4

R

4.11Moving Mower With Engine Stopped

To “free-wheel” or move the mower around without the engine running, rotate the dump valve levers counter- clockwise. See Figure 4-4. Disengage the parking brake and move the mower by hand. When the machine is in the desired position, engage the parking brake and rotate the levers clockwise until they stop. The dump valve levers must be returned to the DRIVE position and torqued to 10 lb-ft to drive the mower.

DUMP VALVE

CONTROL

390S141-1

Figure 4-4. Dump Valve Control

4.12 Recommendations For Mowing

1.Do not mow with dull blades. A dull blade will tear grass, resulting in poor lawn appearance and reduced mowing power.

WARNING

DO NOT operate without Discharge Chute, Mulching Kit, or entire Grass Catcher properly installed.

2.The discharge chute must not be removed and must be kept in the lowest position to deflect grass clippings and thrown objects downward. Direct the side discharge away from sidewalks or streets to minimize cleanup of clippings. When mowing close to obstacles, direct the discharge away from the obstacles to reduce the chance of property damage by thrown objects.

3.Cut grass when it is dry and not too tall. Do not cut grass too short (cut off 1/3 or less of existing grass for best appearance). Mow frequently.

4.Keep mower and discharge chute clean.

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.

6.Use a slow travel speed for trimming purposes.

7.Operate the engine at full throttle for best cutting. Mowing with a lower RPM causes the mower to tear the grass. The engine is designed to be operated at full speed.

8.Use the alternate stripe pattern for best lawn appearance. Vary the direction of the stripe each time the grass is mowed to avoid wear patterns in the grass.

4.13 Adjusting Cutting Height

The mower deck can be adjusted from a height of 1.0 inch to 6.0 inches at 1/4-inch intervals. To adjust the cutting height:

WARNING

DO NOT adjust the cutting height with the mower blades rotating. Disengage the power to the cutter blades and then adjust cutting height.

1.Disengage the power to the cutter blades.

2.Push the cutting height adjustment foot pedal all the way forward using your right foot until it locks in place. See Figure 4-5.

LANYARD

PIN

1

25.1

5.335.2

4

55.4

CUTTINGHEIGHT65.5

390S0140-2

HEIGHT ADJUSTMENT PEDAL

Figure 4-5. Adjusting Cutting Height

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Contents OPERATOR’S Manual STT61V-31EFI-SS With a serial number E3700001 to E3799999STT-31EFI-SS Table of Contents Following Section AdjustmentsGeneral Information USE only Scag Approved Attachments and AccessoriesIntroduction Direction ReferenceSymbols Symbol DescriptionSTT Models Signal Words Safety InformationThis symbol means Attention! Become Alert! Your Signal WordOperation 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 Power Head SpecificationsEngine ElectricalWeights And Dimensions Cutter DeckHydraulic System Controls And Instrument Identification Operating InstructionsDump Valve Control Safety Interlock SystemStarting The Engine Initial Run-In ProceduresGround Travel And Steering Forward TravelReverse Travel Engaging The Deck Drive Cutter BladesParking The Mower Hillside OperationAfter Operation Removing Clogged MaterialAdjusting Cutting Height Moving Mower With Engine StoppedRecommendations For Mowing Adjusting The Height Adjust Pedal Adjusting The Steering LeversTowing Optional Hitch Accessory Condition Cause Cure Troubleshooting Cutting ConditionsGround Wavy High-Low Appearance, Scalloped E v e n C u t o n F l atCut, or Rough Contour Sloping Ridge AcrossDirt or CuttingVery Close To the Ground Scalping Blades HittingStep Cut Ridge in Center Cutting pathBrake Adjustment AdjustmentsRH Steering Control Rod Adjustment Neutral AdjustmentTracking Adjustment Throttle Control and Choke AdjustmentsCutter Deck Pitch Cutter Deck LevelCutter Deck Height Cutter Deck Height AdjustmentCustom-Cut Baffle Adjustment Position Custom-Cut Baffle Adjustment Early ModelsPosition Custom-Cut Baffle Adjustment Current Production Position Custom-Cut Baffle Adjustment Clutch Air Gap Adjustment Electric clutch adjustmentMaintenance Chart Recommended Service Intervals MaintenanceProcedure Comments Break-In 100 200 500 First HoursLocation Lubrication Interval Lubricant NO. Places LubricationLubrication Fitting Points Changing Hydraulic Oil Checking Hydraulic Oil LevelEngine Fuel System Engine OilEngine Air Cleaner Cleaning and/or Replacing Air Cleaner ElementReplacing In-Line Fuel Filter Elements Charging the Battery BatteryBattery Electrolyte First AID Jump StartingDrive Belts Blade ReplacementCutter Blades Blade InspectionTires Cutter Deck GearboxChecking Lubricant Level Cooling System Cleaning the Radiator Debris ScreenChanging Lubricant Checking Coolant LevelChecking 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 Radiador del desechos de criba la de Limpieza .B Tapicería y plataforma CuerpoVentilador del correa la de tensión la de Verificación .C NotaLa de cambios de Caja Refrigeración de SistemaCorte de plataforma Cuchilla la de Reemplazo .C LlantasNota Cuchilla la de Reemplazo .8-7 Figura Corte de cuchillas con trabajar al ojos yTransmisión de Correas Corte de CuchillasCuchilla la de Inspección .A Puente por Arranque .BBatería la de Carga .A BateríaAgua con Enjuague externo Contacto Batería DE Electrolito Para Auxilios PrimerosAire de filtro del elemento del reemplazo y/o Limpieza .A Motor del aire de FiltroLínea en combustible de filtro Del elementos los de Reemplazo .BMotor del Aceite Motor del combustible de SistemaHidráulico 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 Recomendados servicio de Intervalos mantenimiento de Tabla MantenimientoMontaje 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 Tope .8-6 Figura Corte de plataforma la de AlturaCorte 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 Neutral Ajuste Desplazamiento de AjustesEstacionamiento de freno del Ajuste AjustesFreno de varilla la de Ajuste .2-6 Figura Freno del vAjuste .1-6 FiguraLa de ancho del través Corte de trayectoriaInclinadas Crestas Inclinado CorteInclinadas Salientes La de ancho lo aIrregular perfil o Volado corte onduladaEntre cortar sin césped Corte de trayectoriasDe Franjas Vetas La en cortar sin céspedAltura la de ajuste de pedal del Ubicaciones .8-4 Figura Opcional enganche de accesorio RemolqueDirección de palancas las de Ajuste Altura de ajuste de pedal del AjusteDirección De palancas las de Ajuste .7-4 Figura Plataforma la de liberación de Palanca .6-4 FiguraCésped el Corte de altura la de AjusteCortar para Recomendaciones Detenido motor el con cortacésped del DesplazamientoOperación la de Después Atascado material del RetriroCortacésped del Estacionamiento Cuesta una en OperaciónReversa en Desplazamiento Corte de cuchillas plataforma de transmisión la de ConexiónCortador Del accionamiento de Interruptor .3-4 FiguraMotor del Arranque Dirección y terreno el en DesplazamientoInicial arranque de Procedimientos Adelante hacia DesplazamientoDescarga de válvula de Control .2-4 Figura Seguridad de bloqueo de SistemaLa 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 Productividad Dimensiones y PesosPotencia de Cabezal EspecificacionesEléctrico Sistema MotorSeguridad de y instructivas Calcomanías REvErSA AdELAntEChispas 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 Información Seguridad DEOperación la a previas Consideraciones Señalización de PalabrasSímbolos STT ModelosDescripción Símbolo General Información Instrucciones de ReferenciaScag POR Aprobados Dispositivos USE Sólo List Parts Illustrated 8 Sección Sección Sigue Comercial Equipo Limitada GarantíaMantenimiento 7 Sección Ajustes 6 SecciónEspecificaciones 3 Sección Operación DE Instrucciones 4 SecciónSeguridad DE Información 2 Sección General Información 1 Sección61V-SMT 72VS-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.