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Scag Power Equipment STHM manual Check the neutral adjustment. See Adjust- ments, page

Models: STHM

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2.Check the neutral adjustment. (See Adjust- ments, page 8)

WARNING:

Hydraulic fluid is under high pressure. Keep body and hands away from pinholes or nozzles that eject hydraulic fluid under high pressure. If you need service on your hydraulic system, please see your authorized Scag dealer. If hydraulic fluid is injected into the skin, it must be surgically removed within a few hours by a doctor or gangrene may result.

INITIAL RUN-IN PROCEDURES (FIRST DAY OF USE OR APPROXI- MATELY 10 HOURS)

1.Check the belts for proper tension at 2, 4 and 8 hours. Adjust as needed. (See Belt Tension, page 9).

2.Check the neutral adjustment. (See Adjust- ments, page 8)

3.Check the tires for proper pressure.

Caster Wheels	Flat Free
DriveWheels	12 psi
RearSteeringWheel	15 psi

4.Check for loose hardware. Tighten as needed.

5.Check the safety switches for proper adjustment:

*The engine should crank and start if the machineisinneutral,thePTOengagement switch is OFF and the parking brake is ON.

7.Applylubricanttoallthegreasefittings. Lubricant was applied at the factory. This is just a precaution- ary check to make sure that all the fittings have been lubricated.

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Scag Power Equipment STHM manual Check the neutral adjustment. See Adjust- ments, page

Contents

MODEL STHM OPERATOR’S MANUALSTHM-23CV SM-61V SM-72A FAILURE TO FOLLOW SAFE OPERATING PRACTICESMAY RESULT IN SERIOUS INJURY REMEMBER - YOUR MOWER IS ONLY AS SAFE AS THE OPERATORSUBJECT TABLE OF CONTENTSMODEL STHM SUBJECT Illustrated Parts ListTABLE OF CONTENTS CONTINUEDINTRODUCTION SIGNAL WORDSGENERAL SAFETY INSTRUCTIONS CE Mark ISO SymbolsSlow SYMBOLSYMBOL FastBEFORE OPERATING WHILE OPERATING MAINTENANCE AND STORAGE 2. Check the neutral adjustment. See Adjust- ments, page Figure 1. Forward Operation MOWER OPERATIONUse gasoline with an octane rating no less than The left side operator presence pedal must be depressed for operationFigure 2. Reverse Operation ADJUSTMENTSNEUTRAL ADJUSTMENT Figure 4. Parking Brake AdjustmentBELT TENSION Figure 5. Neutral AdjustmentFigure 6. Foot Control Pedal Adjustment The Hydro Drive Belt is spring-loaded and does not require adjustmentFigure 7. Cutter Deck Drive Belt Tension CUTTER DECK ADJUSTMENTSFigure 9. Blade Belt Tension Adjustment BELT ALIGNMENTFigure 12. Repositioning Spacers Figure 10. Cutter Blade AdjustmentFigure 11. Cutter Deck Height Adjustment Figure 13. Blade Sharpening CUSTOM-CUT BAFFLE ADJUSTMENTCUTTER BLADES Figure 16. 3-1/2 Custom-Cut Baffle Position 2004 CCB - 3-1/2 Setting2004 CCB - 4 Setting Figure 15. 3 Custom-Cut Baffle Position1st 10 Hours LUBRICATION & MAINTENANCEPROCEDURE Break-InCURE TROUBLESHOOTING CUTTING CONDITIONSCAUSE CURE TROUBLESHOOTINGCONDITION CAUSECURE TROUBLESHOOTINGCONDITION CAUSEDRIVE SYSTEM TECHNICAL SPECIFICATIONSENGINES ENGINE DECKCUTTER DECKS TECHNICAL SPECIFICATIONS CONTADDITIONAL SPECIFICATIONS APPROXIMATE DIMENSIONSPage STHM2006CD SM-61V & SM-72A CUTTER DECKDescription SM-61V & SM-72A CUTTER DECKRef. Part PartSGB010B ENGINE DECK3832 Number ENGINE DECKPart PartSGB027 UPPER HYDRAULICSDescription UPPER HYDRAULICSPart Number27 6 7 LOWER HYDRAULICSA B Description LOWER HYDRAULICSPart Numbersgb011 CONTROL LINKAGE CONTROLRef. Part No. Number Description CONTROL LINKAGE21 C PTO SwitchConnector INSTRUMENT PANEL ANDELECTRICALCOMPONENTSDescription INSTRUMENT PANEL AND ELECTRICAL COMPONENTSPart Number37 A RIDER FRAME ASSEMBLYRIDER FRAME ASSEMBLY STHM99RFANumber RIDER FRAME ASSEMBLYPart PartSGB050 BRAKE LINKAGEDeck Weldment Swivel BRAKE LINKAGERef. Part No. Number Description RELAY WIRE HARNESS WITH RELAYNumber WINCH LIFT SYSTEMPart PartNumber REPLACEMENT DECALS & INFORMATIONPart PartLIMITED WARRANTY - COMMERCIAL EQUIPMENT