Scag Power Equipment STT-28CAT manual Safety Interlock System, Dump Valve Control

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Section 4

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7.Hour meter (Figure 4-1). Indicates the number of hours the engine has been operated. It operates whenever the engine is running. Has preset maintenance reminders for engine and hydraulic system oil changes. Will start flashing scheduled maintenance 2 hours before preset time and continue flashing until 2 hours after. Automatically resets.

8.Fuse Holders (Figure 4-1). There are one 20-amp fuse and one 50-amp resettable fuse that protect the mower’s electrical system. To replace fuse, pull fuse out of the socket and install a new fuse.

9.Left Steering Control (Figure 4-1). Used to control the mower's left wheel when traveling forward or reverse.

10.Right Steering Control (Figure 4-1). Used to control the mower's right wheel when traveling forward or reverse.

11.Parking Brake Control (Figure 4-1). Used to engage and disengage the parking brakes. Pull the lever back to engage the parking brakes. Push the lever forward to disengage the parking brakes.

12.Fuel Tank Gauge (Figure 4-1). Indicates the amount of fuel in the fuel tank.

13.Dump Valve Control Levers (Figure 4-2). Located on the hydraulic pumps, used to “free-wheel” the mower. Rotating the levers clockwise until they stop allows the unit to move under hydraulic power. The levers must be in this position and torqued to 10ft/lbs during operation of the mower. Rotating the levers counter-clockwise allows the mower to be moved by hand (free-wheeling).

DUMP VALVE

CONTROL

2007 STTDVC

Figure 4-2. Dump Valve Control

14.Deck Lift Foot Lever (Figure 4-1). Used to raise and lower the cutter deck.

15.Cutting Height Adjustment (Figure 4-1). Used to set the cutter deck at the desired cutting height.

16.Deck Release Lever (Figure 4-1). Used to lock the cutter deck in the transport position. Push the foot pedal forward and lift up on the release lever to release the cutter deck for normal mowing.

17.Temperature Gauge (Figure 4-1). Indicates the operating temperature of the engine.

18.Seat Belt (Figure 4-1).Used to secure the operator. Seat belt must be worn at all times when the ROPS is in the upright and locked position.

4.2 SAFETY INTERLOCK SYSTEM

The mower is equipped with a safety interlock system that prevents the engine from starting unless the deck drive is disengaged, the parking brake is engaged, the steering control levers are in the neutral position and the operator is in the seat. The interlock system shuts off the engine if the operator leaves the seat with the steering control levers not in the neutral position and/or the cutter blades engaged and the parking brake not engaged.

WARNING

Never operate the mower with the interlock system disconnected or malfunctioning. Do not disengage or bypass any switch; injury to yourself and others or property damage could result.

4.3INITIAL RUN-IN PROCEDURES (First Day of Use or Approximately 10 Hours)

1.Check all belts for proper alignment and wear at 2, 4 and 8 hours.

2.Change the engine oil and oil filter after the first 20 hours of operation. (See Section 7.4.)

3.Check hydraulic oil level in reservoir. (See Section 7.3.)

4.Check for loose hardware. Tighten as needed.

5.Check interlock system for proper operation. (See Section 4.2.)

6.Check tire pressure. Adjust pressure if necessary. (See Section 7.10)

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Contents OPERATOR’S Manual Remember Your Mower is only AS Safe AS the Operator Table of Contents Inside Back Cover Limited Warranty Commercial EquipmentIntroduction General InformationDirection Reference Servicing The Engine and Drive TraiN ComponentsSymbol Description SymbolsBefore Operation considerations Safety InformationSignal Words Operation Considerations Section Foldable Roll-Over Protection System Roll-over protection systemSeat Belt Inspection Maintenance Considerations & storage Diesel Fuel only Safety and Instructional DecalsPower head SpecificationsEngine ElectricalCutter Deck Weights and DimensionsHydraulic System SMT61V SMT72VControls and Instrument Identification Operating InstructionsDump Valve Control Safety Interlock SystemForward Travel Starting the EngineGround Travel and Steering Reverse Travel Engaging the Deck Drive Cutter BladesParking the Mower Hillside OperationAfter Operation Removing Clogged MaterialRecommendations for Mowing Adjusting Cutting HeightMoving Mower with Engine Stopped Adjusting the Steering Levers Adjusting the Height Adjust PedalTowing optional hitch accessory Condition Cause Cure Troubleshooting Cutting ConditionsTroubleshooting Cutting Conditions Contd Scalping 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 Stop Cutter Deck HeightCustom-Cut Baffle Adjustment Custom-Cut Baffle AdjustmentMaintenance Chart Recommended Service Intervals MaintenanceLubrication Maintenance Chart Recommended Service Intervals ContdSection Changing Hydraulic Oil Checking Hydraulic Oil LevelEngine Fuel System Engine OilEngine Air Cleaner BatteryCleaning and/or Replacing Air Cleaner Element Replacing In-Line Fuel Filter ElementsDrive Belts Charging the BatteryCutter Blades Blade InspectionBlade Sharpening Blade ReplacementTires Cooling System Cutter Deck GearboxChecking Lubricant Level Changing LubricantChecking The Fan Belt Tension Cleaning the Radiator Debris ScreenBODY, DECK, and Upholstery Scag Approved Attachments and Accessories Illustrated Parts ListSection 61V & 72V Cutter Deck Description Cutter Deck Controls 481764 Link, Deck Lift Sheet Metal Components Sheet Metal Components Section STT ROLL-OVER Protection System with Suspension Seat 9292 Deck Drive Components Deck Drive Components Section Engine & Attaching Parts 28HP Cat diesel Section Engine & Attaching Parts 28HP Cat Diesel Section Radiator & Attaching Parts 28HP Cat Diesel Radiator & Attaching Parts 28HP Cat Diesel Brake and Steering Components Brake and Steering Components Section Fuel and Hydraulic System 28HP Cat Diesel Section Fuel and Hydraulic System 28HP Cat Diesel Section BDP-16A Hydraulic Pump Assembly with Cooling Fan Hex Screw, Flanged Head M10 x 1.50-65mm Section Electrical System 28HP Cat Diesel Electrical System 28HP Cat Diesel Heavy-Duty Commercial Sttkbd Decals Page2 Section Electrical Schematic 28HP Cat Diesel Limited Warranty Commercial Equipment