Scag Power Equipment STT-31BSD Operator's Manual

MODEL STT-31BSDOPERATOR’S MANUALTHIS MANUAL CONTAINS THE OPERATINGINSTRUCTIONS AND SAFETY INFORMA-TION FOR YOUR SCAG MOWER. READINGTHIS MANUAL CAN PR

6Section 22.4 OPERATION CONSIDERATIONS(CONT'D)3. To prevent tipping or loss of control, start and stopsmoothly, avoid unnecessary turns and trave

7Section 22.5 ROLL-OVER PROTECTION SYSTEMWARNING:Keep the roll bar in the raised and lockedposition and the seat belt securely fastenedduring operatio

8INSPECT WEBBINGINSPECT BUCKLE& LATCHFigure 2-4 Seat Belt InspectionThe potential exposure of the seat belt to severeenviromental conditions make

92.6 MAINTENANCE CONSIDERATIONS & STORAGE1. Never make adjustments to the machine with theengine running unless specifically instructed to d

10Section 22.7 SAFETY AND INSTRUCTIONAL DECALSWARNINGINSTALL BELT COVER BEFOREOPERATING MACHINEREAD OPERATOR'S MANUAL481039390S0150F481568FORWARD

11SPECIFICATIONSSection 3SCAG “SABRE TOOTH TIGER” ZERO-TURN RIDERMODEL: STT– 31BSDENGINEGeneral Type: Heavy Duty Industrial/Commercial Turbo Charged D

12Section 3SPECIFICATIONS (CON'T)SCAG “SABRE TOOTH TIGER” ZERO-TURN RIDERMODEL: STT– 31BSDCUTTER DECKType: SMST-72A ("Advantage") &

13Section 4OPERATING INSTRUCTIONSDo not attempt to operate this mower unless youhave read this manual. Learn the location andpurpose of all controls

14Section 47. Oil Pressure (Figure 4-1). Indicates engine oilpressure. Reference the engine operator's manualfor further information.8. Hourmet

15Section 4 Day of Use or Approximately 10 Hours)1. Check all belts for proper alignment and wear at 2, 4and 8 hours.2. Change the engine oil and

FAILURE TO FOLLOW SAFE OPERATING PRACTICES MAY RESULT IN SERIOUS INJURY.* Keep all shields in place, especially the grass discharge chute.* Before p

16Section 4To stop the forward travel, pull the steering control leversback to the neutral position.To steer the mower left while traveling forward, p

17Section 43. To disengage the deck drive, push the switch in tothe disengage position.4. Always operate the engine at full throttle to properlymainta

18Section 44. After the mower has cooled down, fill the fuel tankwith fresh, clean fuel with a minimum cetane ratingof 40 at the end of every day of o

19Section 44.13 ADJUSTING CUTTING HEIGHTThe mower deck can be adjusted from a height of 1-inchto 6 inches at 1/4-inch intervals. To adjust the cutting

20Section 4B. Rotate the steering lever forward or backward toachieve the optimum operating position.C. Tighten the tension knob and repeat on theoppo

Section 521Stringers - Occasional Low engine RPM Run engine at full RPMBlades of UncutGrass Ground speed too fast Slow speed to adjust for conditionsW

Section 522Uneven Cut on Flat Lift worn from blade Replace bladeGround - WavyHigh-Low Blade upside down Mount with cutting edge towardAppearance, grou

Section 523Scalping - Blades Low tire pressures Check and adjust pressuresHitting Dirt orCutting Very Close to Ground speed too fast Slow speed to adj

Section 624ADJUSTMENTS6.1 PARKING BRAKE ADJUSTMENTWARNING:Do not operate the mower if the parking brake isnot operable. Possible severe injury could

Section 625B. The steering control levers are in the full forwardposition and the mower pulls to one side or theother when traveling in a forward dire

ITABLE OF CONTENTSSUBJECT PAGE Section 1 - General Information1.1 Introduction ...

Section 626Tracking AdjustmentStop the engine and remove the key from theignition before making any adjustments. Wait forall moving parts to come to

Section 6276.6 CUTTER DECK ADJUSTMENTSCutter deck level, pitch and height are set at the factory.However, if these adjustments should ever need to bem

Section 628Cutter Deck HeightThe cutter deck height adjustment is made to ensure thatthe cutter deck is cutting at the height indicated on thecutting

Section 629To adjust the Custom-Cut Baffle height:1. Place the cutter deck in the transport position.2. Remove the hardware securing the Custom-CutBaf

30Section 7 MAINTENANCE7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS* Perform these maintenance procedures more frequently under extreme dust

Section 731+ Compatible Greases: Mobilix #2 found at Mobil Service StationsRonex MP found at Exxon Service StationsSuper Lube MEP #2 & Super Stay-

32Section 7Figure 7.1 Lubrication Fitting PointsGREASE FITTING LUBRICATIONLUBRICANT / INTERVALLITHIUM MP WHITE GREASE 2125( 40 HOURS / WEEKLY )CHASSIS

Section 7337.3 HYDRAULIC SYSTEMA. Checking Hydraulic Oil LevelThe hydraulic oil level should be checked after the first10 hours of operation. Thereaf

34Section 7A. Checking Engine Crankcase Oil LevelThe engine oil level should be checked after every 8 hoursof operation or daily as instructed in the

Section 7357.5 ENGINE FUEL SYSTEMA. Filling the Fuel TankFill the fuel tank at the beginning of each operating day towithin one inch below the filler

IITABLE OF CONTENTS (CONT'D)SUBJECT PAGESection 6 - Adjustments6.1 Parking Brake Adjustment ...

36Section 7WARNING:BATTERIES PRODUCE EXPLOSIVEGASES. Charge the battery in a wellventilated space so gases produced whilecharging can dissipate.Chargi

Section 737WARNING:Always wear proper hand and eye protectionwhen working with cutter blades.7.8 DRIVE BELTSAll drive belts are spring loaded and sel

38Section 7The cutter deck gearbox can reach highoperating temperatures. Allow the cutter deckgearbox to cool before servicing.CAUTION:7.11 CUTTER DE

Section 7392. Clean and remove the check plug from the side ofthe gearbox (See Figure 7-12). Visually check thatthe lubricant level is up to the bott

40Section 7-NOTE-Check the radiator for excessive debris andclean with compressed air. Never spray a hotengine with water, use only compressed air to

41NOTES

4261V CUTTER DECK44 61 636912656452585417592414562856333AABB414 29 2053285224582452736632136855552958232331150134660496724354891619152726128251 232336

4361V CUTTER DECK1 461863 Cutter Deck Advantage2 04003-40 Bolt, Carriage 7/16-14 x 1-1/4"3 04019-04 Nut, Hex Serrated Flange 3/8-164 481625-01 Wi

4472A CUTTER DECK44 61 636912656452585417592414562856333AABB414 29 20532852245824526266321368555529582323573115013466049672435489161915272612 4751 232

4572A CUTTER DECKRef. PartNo. No. DescriptionRef. PartNo. No. Description42 43297 Spindle Bushing, Bottom43 481035 Nut, Special 1 - 1/16-1844 48114-04

1GENERAL INFORMATION1.1 INTRODUCTIONYour mower was built to the highest standards in theindustry. However, the prolonged life and maximumefficiency o

46CUTTER DECK CONTROLSSTT2006CDC21193742461410 4252335234138323430727334041282824264140CUTTER DECK1340393141403943984520183616441741402611292240411522

47CUTTER DECK CONTROLSRef. PartNo. No. Description1 461929 Lever Assembly, Deck Level2 481764 Link, Deck Lift3 481765 Rod End, Female - 1/2-20 RH4 481

48SHEET METAL COMPONENTSSTT-BSG 2005 SMC464847481550263025121519912324A31323334293336374039384142435535441527225420281514131211101617A2053487181856575

49SHEET METAL COMPONENTSRef. PartNo. No. Description1 451481 Fender Weldment, RH2 04001-09 Bolt, Hex Head, 5/16-18 x 1, Zinc3 43606 Spacer4 04041-07 F

50STT-BSD ROLL-OVER PROTECTION SYSTEMSTT 2006 FOLD ROPSSEAT BELTBRACKET12233445566789101112131414SEAT BELTBRACKET15152120171816191122

51STT-BSD ROLL-OVER PROTECTION SYSTEM1 9514 STT, ROPS Accessory (incl. all items below)2 04001-82 Bolt, Hex Head 1/2-13 x 4-1/2”3 04021-19 Nut, Center

52 DECK DRIVE COMPONENTSATo ABTo BTOREAROFENGINETOENGINEFLYWHEEL123456789410111213141516171819202122222324242525262727282930313233343536373842404139

531 423464 Belt Guard, Rear2 481531 Hinge, Rear Belt Guard3 481309 Latch, Hood4 04003-07 Carr. Bolt 1/4-20 x .5”5 04019-02 Nut, Serr. Flg. 1/4-206 040

54RADIATOR & ENGINE BRACKETS"A""B""B"ATOFRAMETOPUMPMTGPLATE121161721201918274547264425442253232444443128294932532634

55RADIATOR & ENGINE BRACKETS1 461895 Radiator2 481742 Hose, Upper Radiator3 482366 Hose, Lower Radiator4 423379 Shroud, Fan5 04010-26 Screw. #10-3

2CE MarkTransmissionChokeOn/StartSpring Tension on IdlerOilOff/StopSYMBOL DESCRIPTIONSYMBOL DESCRIPTIONISO SymbolsSpinning Blade48071SParking BrakeWAR

56 BRAKE AND STEERING COMPONENTSSTT2006B&SCA1101133179192341112134365773484746523534243 44 451556706971621565606467605241342351503435TO RH PUMPTO

57 BRAKE AND STEERING COMPONENTS1 482340 Grip, Handle Bar2 461914 Handle Bar, LH (Includes item 1)461923 Handle Bar, RH (Includes item 1)3 04001-32 Bo

58 FUEL AND HYDRAULIC SYSTEMDDDEFCIHGGFEAABCDUMP VALVEB2002 STT-BSD F&HS.epsIH3923242640323637Z342535213133930305756547 44344 45 50 4651535249

59 FUEL AND HYDRAULIC SYSTEM1 04110-01 U-Nut 1/4-202 48136-13 Hose Clamp, 0.69 dia.3 04001-03 Bolt, Hex Head 1/4-20 x 2.0”4 48811 Hose, 3/8” ID Pushlo

60ELECTRICAL SYSTEMBACCBA12345677891011121314151617181920212223 222120242524252425262221272712192829303132333435363637DD19382005STTBSD-EESGLOWP

61Ref. PartNo. No. DescriptionELECTRICAL SYSTEM1 481176-08 Cable, Positive Battery2 481176-07 Cable, Negative Battery3 461826 Clutch, Electric PTO4 48

62HYDRAULIC PUMP ASSEMBLYSTT 2K BDP-2111491121210687185141719202221232416252628273Overhaul Seal Kit13251315HYDRAULIC PUMP ASSEMBLY - BDP-21L

631 HG 2510065 Housing Kit (Includes Housing, Journal Bearing)2 HG 2510066 End Cap3 HG 50641 Straight Headless Pin4 HG 50633 Socket Head Screw5 HG 503

64WIRE HARNESS, STT - 31BSDPART NUMBER 483057

65REPLACEMENT DECALS AND INFORMATION PLATES483192482286483201 - 61V481956 - 72A48304448404481568482290481039482528482565482580481971WARNINGINSTALL BEL

3SlowFastCutting Element - EngageCutting Element - Basic SymbolCutting Element - DisengageContinuously Variable - LinearRead Operator's ManualKee

66REPLACEMENT DECALS AND INFORMATION PLATES481921R4825812004 STT-31BSD Decals 248192548166448166348271048166348166448258148193748314488254821654823674

LIMITED WARRANTY - COMMERCIAL EQUIPMENTAny part of the Scag commercial mower manufactured by Scag Power Equipment and found, in the reasonable judgmen

4SAFETY INFORMATION2.1 INTRODUCTIONYour mower is only as safe as the operator.Carelessness or operator error may result in seriousbodily injury or dea

59. Keep the machine and attachments in good operatingcondition. Keep all shields and safety devices inplace. If a shield, safety device or decal is