Scag Power Equipment STT61V-25KBD manual Electric clutch adjustment, Clutch Air Gap Adjustment

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Section 6

R

6.7 electric clutch adjustment

ADJUSTMENT NUTS

The electric clutch serves two functions in the operation of the mower. In addition to starting and stopping the power flow to the cutter blades, the clutch also acts as a brake to assist in stopping blade rotation when the PTO is switched off or the operator presence circuit is interrupted.

When the clutch is disengaged, the air gap between the armature and rotor must be adjusted to fifteen thousandths of an inch, 0.015, for proper operation. The airgap adjustment is made at three bolts on the clutch. There are three inspection windows, one next to each adjusting bolt. See Figure 6-3.

INSPECTION WINDOW (x3)

ADJUSTMENT NUTS

Figure 6-1. Clutch Air Gap Adjustment

1.Locate the inspection windows on the clutch.

2.Place a 0.015 feeler gauge in the slot between the rotor and the armature.

3.Tighten or loosen the adjusting bolt as needed to acheive the 0.015 inch airgap. See Figure 6-4. Perform this operation at all three inspection windows.

Figure 6-1. Clutch Air Gap Adjustment

This adjustment should be done every 500 hours of operation or annually, whichever comes first. In cases where the machine is heavily used, airgap settings should be checked more often.

If the air gap is too narrow, the clutch armature may drag when disengaged, resulting in premature failure.

If the air gap is too wide, the clutch may be slow to engage as the magnet must pull the armature in from a greater

distance.

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Contents OPERATOR’S Manual STT61V-28CAT-SS Remember Your Mower is only AS Safe AS the OperatorTable of Contents Adjustments Parking Brake Adjustment Travel Adjustments Introduction General InformationDirection Reference Servicing The Engine and Drive TraiN ComponentsSymbol Description SymbolsSafety Information Signal WordsBefore Operation considerations Operation Considerations Section Foldable Roll-Over Protection System Roll-over protection systemSeat Belt Inspection Using a spark arrestor Maintenance Considerations & storageDiesel Fuel only Safety and Instructional DecalsPower head SpecificationsEngine ElectricalCutter Deck Weights and DimensionsHydraulic System SMT61VControls and Instrument Identification Operating InstructionsDump Valve Control Safety Interlock SystemStarting the Engine Ground Travel and SteeringForward Travel Reverse Travel Engaging the Deck Drive Cutter BladesHillside Operation Rotating BladesParking the Mower After OperationAdjusting Cutting Height Moving Mower with Engine StoppedRecommendations for Mowing Adjusting the Steering Levers Adjusting the Height Adjust PedalTowing optional hitch accessory Condition Cause Cure Troubleshooting Cutting ConditionsCut, or Rough Contour Troubleshooting Cutting Conditions ContdScalping Blades Hitting Parking Brake Adjustment AdjustmentsNeutral Adjustment Travel AdjustmentsThrottle Control and Choke Adjustments Belt AdjustmentTracking Adjustment Belt Alignment Cutter Deck AdjustmentsCutter Deck Level Cutter Deck PitchCutter Deck Stop Cutter Deck HeightCustom-Cut Baffle Adjustment Custom-Cut Baffle AdjustmentClutch 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 OilEngine Air Cleaner BatteryCleaning and/or Replacing Air Cleaner Element Replacing In-Line Fuel Filter ElementsCutter Blades Charging the BatteryBlade Inspection Jump StartingBlade Replacement TiresBlade Sharpening Cooling System Cutter Deck GearboxChecking Lubricant Level Changing LubricantCleaning the Radiator Debris Screen BODY, DECK, and UpholsteryChecking The Fan Belt Tension Scag Approved Attachments and Accessories Illustrated Parts ListIllustrated Parts List Section 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 Engine & Attaching Parts CAT Diesel Available through the individual engine manufacturer Radiator & Attaching Parts CAT Diesel Radiator & Attaching Parts CAT Diesel Engine & Attaching Parts Kubota Diesel 424633 Latch, Hood Brake and Steering Components Brake and Steering Components Fuel and Hydraulic System CAT Diesel Fuel and Hydraulic System CAT Diesel Fuel and Hydraulic System Kubota Diesel Hose Assy, 1/2 ID Tank to Filter Base Section BDP-16A Hydraulic Pump Assembly with Cooling Fan Hex Screw, Flanged Head M10 x 1.50-65mm Electrical System CAT Diesel Electrical System CAT Diesel Electrical System Kubota Diesel 483643 Cover, Sealed Single 483641 Manufactured Under ONE or More Replacement Decals and Information PlatesSttkbd Decals Page2 COM Electrical Schematic CAT DieselGlow Plug POS NEG Volt Meter PTO Switch Module Relay Electrical Schematic Kubota DieselLimited Warranty Commercial Equipment