Scag Power Equipment STT61V-35BVAC, STT-29DFI, STT61V-29DFI, STT-35BVAC Power Head, Cutter Deck

Page 17

Section 3

 

 

R

 

 

 

 

3.3 Power Head

 

 

 

Drive System

Hydraulic Drive with Two Variable Displacement Pumps and Two Cast-Iron High Torque Motors

Hydrostatic Pumps

Two Hydro-Gear™ 16 cc/rev. Pumps with Dump Valves

Drive Wheel Motors:

Two Parker Model TG 15 cu. inch Cast-Iron High Torque Motors

Steering/Travel Control

Twin Lever Fingertip Steering Control

 

 

with Individual Control to Each Wheel with Gas Spring Dampers

Parking Brake

Lever Actuated Linkage to Brakes on Both Drive Wheel Axles

Wheels:

 

 

 

(2) Front Caster - (52" Deck)

13 X 5.00 Four-Ply, Flat Free

(2) Front Caster - (61" & 72" Deck)

13 X 6.50 Four Ply, Flat Free

(2) Drive - (52" Deck)

23 X 10.50 X 12 Four-Ply Pneumatic Tubeless, Radius Edge

(2) Drive - (61" & 72" Deck)

24 x 12 x 12 Four-Ply Pneumatic Tubeless, Radius Edge

Tire Pressure:

 

 

 

Front Caster

 

Flat Free

Drive

 

12 PSI

Fuel Tank

8-1/2-Gallon Seamless Polyethylene Tank with Large Opening, Fuel Gauge and Fill Cap

Seat

Padded Suspension Seat

Travel Speed

27HP

29HP/35HP

Forward

0-10 MPH

0-12 MPH

Reverse

0-5 MPH

0-6 MPH

-NOTE- The machine will travel at 10 mph or 12 mph for transport purposes. For best cutting performance the forward travel speed should be adjusted depending upon the cutting conditions.

3.4 Cutter Deck

Type

Floating, Adjustable, Anti-Scalping, Hybrid Design Combines Out-Front and Belly-Mount Designs

Construction

Tri-Plate deck construction

 

Top of deck consists of three steel plates totaling nearly 1/2" of steel., 7-gauge (3/16") deck skirt.

True Cutting Width:

 

 

52V

52" (132.0 cm)

61V

61" (155.0 cm)

72VS

71.5" (181.6 cm)

Cutting Height Adjustment.

..........Foot-Operated Lever Adjustment from Operator's Seat, 1.0" to 6.0" in 1/4"increments

Cutter Blades

197 or .250 Thick, Milled Edge, Wear Resistant Marbain™

52V

Three (3) 18" blades

61V

Three (3) 21" blades

72VS

Three (3) 24.5" blades

Blade Engagement

Electric Blade Engagement Clutch with Control Panel Switch

 

 

Connected to the Cutter Deck Gearbox through a Drive Shaft.

Discharge Opening

Extra-Wide Discharge Opening with Spring-Loaded Discharge Chute and Turbo Baffle

Discharge Chute

Black, Polypropylene (Plastic), Flexible

Spindles

Heavy-Duty 1-1/8" Top Dimension Spindle Shaft, Cast Housing, Taper Roller Bearing,

 

 

Low Maintenance with Top Access Grease Fitting and Grease Overfill Relief Poppet

Spindle Pulleys

Split Steel with Easily Removed Taper Hubs

Cutter Deck Belts

B-Section with Kevlar Cord, Self-Adjusting, Self-Tightening

Electric Clutch Type

Ogura Heavy Duty PTO Clutch Brake

Drive Shaft

Clamp Yoke Shaft With Two High-Speed U-Joints

11

Image 17
Contents OPERATOR’S Manual STT-35BVAC Remember Your Mower is only AS Safe AS the OperatorTable of Contents Troubleshooting Cutting Conditions Adjustments Limited Warranty Commercial Equipment Table of Contents Servicing The Engine And Drive Train Components IntroductionDirection Reference Symbol Description SymbolsSafety Information Operation Considerations Section ROLL-OVER Protection System Seat Belt Inspection Spark Ignition System Forward Reverse Electrical EngineCutter Deck Power HeadHydraulic System Weights And Dimensions 52V 61VProductivity 52V 61V 72VSControls 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 BladesHillside Operation Rotating BladesAfter Operation Parking The MowerRecommendations For Mowing Adjusting Cutting HeightMoving Mower With Engine Stopped Adjusting The Height Adjust Pedal Adjusting The Steering LeversTowing Optional Hitch Accessory Condition Cause Cure Troubleshooting Cutting ConditionsCut, or Rough Contour Troubleshooting Cutting Conditions ContdScalping Blades Hitting Parking Brake Adjustment AdjustmentsNeutral Adjustment Travel AdjustmentsTracking Adjustment Throttle Control And Choke AdjustmentsBelt Adjustment Belt Alignment Cutter Deck AdjustmentsCutter Deck Level Cutter Deck PitchCutter Deck Height Custom-Cut Baffle AdjustmentPosition Custom-Cut Baffle Adjustment 10. Clutch Air Gap Adjustment Electric clutch adjustmentMaintenance Chart Recommended Service Intervals MaintenanceLubrication Maintenance Chart Recommended Service Intervals ContdLubrication Fitting Points Changing Hydraulic Oil Checking Hydraulic Oil LevelEngine Fuel System Engine OilReplacing In-Line Fuel Filter Elements Engine Air CleanerCleaning and/or Replacing Air Cleaner Element Charging the Battery BatteryCutter Blades Drive BeltsJump Starting Blade InspectionTires Blade ReplacementCooling System Cutter Deck GearboxChecking The Fan Belt Tension Liquid- Cooled Engines Only Cleaning the Radiator Debris ScreenBody, Deck, And Upholstery Section Scag Approved Attachments And Accessories Illustrated Parts ListSection Description 52V Cutter Deck61V & 72VS Cutter Decks Description Cutter Deck Controls Cutter Deck Controls Sheet Metal Components 9278 STT ROLL-OVER Protection System STT ROLL-OVER Protection System STT Suspension Seat Section Deck Drive Components 35BVAC Engine and Attaching Parts Kohler Available through the individual engine manufacturer Engine & Attaching Parts 27HP, 29DFI Kawasaki & 35BVAC Engine & Attaching Parts 27HP, 29DFI Kawasaki & 35BVAC Brake and Steering Components Bolt, Carriage 5/16-18 x STT Hydraulic System Base Fuel Models produced prior to 1/1/2011 STT Fuel System EPA PhaseSTT Fuel System EPA Phase 3 models produced after 1/1/2011 STT Fuel System EPA Phase STT FS Carb Teir 3 Rev2.eps STT-LE Fuel System C.A.R.B. Tier BDP-16A Hydraulic Pump Assembly BDP-16A Hydraulic Pump Assembly Port a Side Hex Screw, Flanged Head M10 x 1.50-65mm Section Electrical System Kohler & Briggs & Stratton Instrument Panel, Top w/Decals Electrical System 27HP Kawasaki Electrical System 27HP Kawasaki Electrical System 29DFI Kawasaki Electrical System 29DFI Kawasaki Heavy-Duty Replacement Decals and Information Plates1617 STT Electrical Schematic Kohler Engine STT Electrical Schematic 27HP KawasakiRelay Electrical Schematic 29DFI KawasakiSection STT Electrical Schematic 35BVAC Briggs & Stratton Limited Warranty Commercial Equipment

STT-35BVAC, STT61V-29DFI-LE, STT61V-35BVAC, STT61V-29DFI, STT-29DFI specifications

Scag Power Equipment is renowned for its high-quality lawn care machinery, and among its range of products, the STT series stands out, particularly the STT-29DFI, STT61V-35BVAC, STT61V-29DFI, STT61V-29DFI-LE, and STT-35BVAC models. These zero-turn mowers are designed to deliver exceptional performance, durability, and efficiency, catering to both commercial landscapers and homeowners alike.

The STT-29DFI offers an impressive 29 horsepower, powered by a state-of-the-art EFI engine. This model boasts an advanced deck design, featuring a robust 61-inch cutting width that ensures a clean and even cut. The mower's zero-turn capability allows for enhanced maneuverability, making it easier to navigate around obstacles and achieve a professional finish.

In comparison, the STT61V-35BVAC takes power to the next level with a 35 horsepower engine. This model is perfect for tackling larger areas and more challenging terrains. The vacuum-assisted cutting system effectively collects clippings, reducing cleanup time after mowing. The heavy-duty, reinforced steel frame ensures long-lasting durability, while the comfortable operator seat and control system enhance user experience.

The STT61V-29DFI is another remarkable addition to this lineup, featuring a 29 horsepower engine equipped with EFI technology. This model focuses on fuel efficiency, allowing operators to maximize output while minimizing fuel consumption. With its 61-inch cutting deck, it provides an excellent balance between power and precision, ideal for both commercial and residential use.

For those looking for a more specialized option, the STT61V-29DFI-LE includes enhancements aimed at professional landscapers, such as a premium seat suspension system for extended comfort during long operating hours. This model also features a customizable control panel, making it easier for operators to tailor settings to their specific needs.

Lastly, the STT-35BVAC integrates a robust 35 horsepower engine, along with advanced features that promote efficiency and productivity. This model's design prioritizes user-friendly operation, with intuitive controls and easy access to maintenance points. The vacuum system further enhances its capabilities by collecting grass clippings and debris as you mow, ensuring a tidy lawn at all times.

In summary, Scag Power Equipment's STT series is characterized by powerful engine options, advanced cutting technologies, and a commitment to durability and operator comfort. Whether you choose the STT-29DFI, STT61V-35BVAC, STT61V-29DFI, STT61V-29DFI-LE, or STT-35BVAC, you can expect a mower that stands up to the demands of any lawn care task.