Scag Power Equipment STT61V-35BVAC manual Throttle Control And Choke Adjustments, Belt Adjustment

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Section 6

6.Actuate the steering control levers forward and reverse several times and return them to the neutral position.

7.Check that the drive wheels remained in neutral and readjust if necessary.

8.Check that the steering control levers hit the stop before the pumps reach full stroke. Adjust as needed.

Tracking Adjustment

Caution

Stop the engine and remove the key from the ignition before making any adjustments. Wait for all moving parts to come to a complete stop before beginning work.

Caution

The engine and drive unit can get hot during operation causing burn injuries. Allow engine and drive components to cool before making any adjustments.

- NOTE -

Before proceeding with this adjustment, be sure that the caster wheels turn plus pivot freely and that the tire pressure in the drive wheels is correct. If the tire pressure is not correct, the machine will pull to the side with the lower pressure.

1.If at full speed the mower pulls right, it is an indication that the left wheel is turning faster than the right wheel. To adjust this condition, proceed as follows:

A. Stop the machine and place the steering control levers in the neutral position. Loosen the lock nuts securing the ball joints at each end of the LH steering control rod. Rotate the control rod to lengthen the rod and tighten the lock nuts. This will cause the control rod to stroke the LH pump less, slowing down the LH wheel. See Figure 6-4.

- NOTE -

If after making the adjustment as outlined in step 1A, the machine creeps forward or backward, perform the neutral adjustment. See Neutral Adjustment on page 25.

2.If at full speed the mower pulls left, it is an indication that the right wheel is turning faster than the left wheel. To adjust this condition, proceed as follows:

A. Stop the machine and place the steering control levers in the neutral position. Loosen the lock nuts securing the ball joints at each end of the RH steering control rod. Rotate the control rod to lengthen the rod and tighten the lock nuts. This will cause the control rod to stroke the RH pump less, slowing down the RH wheel. See Figure 6-3.

- NOTE -

If after making the adjustment as outlined in step 2A, the machine creeps forward or backward, perform the neutral adjustment. See Neutral Adjustment on page 25.

6.3Throttle Control And Choke Adjustments

These adjustments must be performed by your Scag dealer to ensure proper and efficient running of the engine. Should either need adjustment, contact your authorized Scag service center.

6.4 Belt Adjustment

WARNING

Before removing any guards, shut the engine off and remove the ignition key.

All drive belts are spring loaded and self-tensioning, however after the first 2, 4, 8 and 10 hours of operation, the belts should be checked for proper alignment and wear. Thereafter, check the belts after every 40 hours of operation or weekly, whichever occurs first.

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Contents OPERATOR’S Manual Remember Your Mower is only AS Safe AS the Operator STT-35BVACTable of Contents Troubleshooting Cutting Conditions Adjustments Limited Warranty Commercial Equipment Table of Contents Servicing The Engine And Drive Train Components IntroductionDirection Reference Symbols Symbol DescriptionSafety Information Operation Considerations Section ROLL-OVER Protection System Seat Belt Inspection Spark Ignition System Forward Reverse Engine ElectricalPower Head Cutter DeckWeights And Dimensions 52V 61V Hydraulic SystemProductivity 52V 61V 72VSOperating 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 TravelRotating Blades Hillside OperationAfter Operation Parking The MowerRecommendations For Mowing Adjusting Cutting HeightMoving Mower With Engine Stopped Adjusting The Steering Levers Adjusting The Height Adjust PedalTowing Optional Hitch Accessory Troubleshooting Cutting Conditions Condition Cause CureTroubleshooting Cutting Conditions Contd Cut, or Rough ContourScalping Blades Hitting Adjustments Parking Brake AdjustmentTravel Adjustments Neutral AdjustmentTracking Adjustment Throttle Control And Choke AdjustmentsBelt Adjustment Cutter Deck Adjustments Belt AlignmentCutter Deck Level Cutter Deck PitchCustom-Cut Baffle Adjustment Cutter Deck HeightPosition Custom-Cut Baffle Adjustment Electric clutch adjustment 10. Clutch Air Gap AdjustmentMaintenance Maintenance Chart Recommended Service IntervalsMaintenance Chart Recommended Service Intervals Contd LubricationLubrication Fitting Points Checking Hydraulic Oil Level Changing Hydraulic OilEngine Oil Engine Fuel SystemReplacing In-Line Fuel Filter Elements Engine Air CleanerCleaning and/or Replacing Air Cleaner Element Battery Charging the BatteryDrive Belts Cutter BladesJump Starting Blade InspectionBlade Replacement TiresCutter Deck Gearbox Cooling SystemChecking The Fan Belt Tension Liquid- Cooled Engines Only Cleaning the Radiator Debris ScreenBody, Deck, And Upholstery Section Illustrated Parts List Scag Approved Attachments And AccessoriesSection 52V Cutter Deck Description61V & 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 STT Fuel System EPA Phase Models produced prior to 1/1/2011STT 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 Replacement Decals and Information Plates Heavy-Duty1617 STT Electrical Schematic Kohler STT Electrical Schematic 27HP Kawasaki EngineElectrical Schematic 29DFI Kawasaki RelaySection 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.
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