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Section 3SPECIFICATIONS3.1 ENGINEGeneral Type ............................................................................. Heavy Duty Industrial/Commercial DieselBrand ......................................................................................... Kubota 28 HP Super 5 Series, Electric StartModel ......................................................................................... D1105-BHorsepower ................................................................................ SAE Gross Intermittent, 28 HP @ 3000 RPMType ........................................................................................... Horizontal Shaft, Water Cooled, 4-Cycle DieselDisplacement ............................................................................. 1123 cc.Low Idle ..................................................................................... 850 - 950 RPMCylinders ................................................................................... 3Order of Firing .......................................................................... 1-2-3Direction of Rotation ................................................................. Counter-clockwise (Viewed From Flywheel End)Fuel Injection Pump .................................................................. Bosch MD Type, Mini PumpInjection Pressure ...................................................................... 1,991 psiInjection Timing (Before T.D.C.) ............................................. 19°Compression Ratio .................................................................... 23:1Starting System ......................................................................... Electric Starting with Cell Starter, Glow Plug In CombustionChamberFuel ............................................................................................ Diesel Fuel No. 2 -D (ASTM D975)Oil Type ..................................................................................... API Sandard, CD Grade or BetterOil Filter .................................................................................... Full Flow Oil Filter CartridgeOil Capacity ............................................................................... 4 Quarts With FilterCoolingPressurized, Sealed Cooling System, 170° F Thermostat, BladeFan, Cooling Capacity 8 QuartsBelts:Alternator .............................................................................. See Engine Manual for Part NumberFan ......................................................................................... Scag Part Number - 481114Electric Clutch ...................................................................... Scag Part Number - 481104Hydraulic Pump .................................................................... Scag Part Number - 4811033.2 ELECTRICALBattery ....................................................................................... 12 VoltCharging System ....................................................................... AlternatorCharging Output ....................................................................... 12 Volt, 30 AmpSystem Polarity .......................................................................... Negative GroundStarter ........................................................................................ 12 Volt Electric Ring Gear Type, Key and Solenoid OperatedInterlock Switches ..................................................................... Left Foot Pedal, Blade Brake, and Parking BrakeFuses .......................................................................................... Two (2) 30 Amp3.3 TRACTORDrive Motors ............................................................................. 12 Cu. In. Cast Iron High Torque MotorsSteering...................................................................................... Chain and SprocketForward and Reverse Control ................................................... Pedal Operated Linkage Connected To The Hydraulic PumpParking Brake ............................................................................ Lever Actuated Linkage to Drum Brakes on Both Drive WheelAssembliesWheels:(2) Front Caster .................................................................... 12 x 3.5(2) Drive ............................................................................... 2 x 10.5 -12, 4-ply Pneumatic Tubeless, Radius Edge(1) Rear ................................................................................ 18 x 8.50 -8 NHSFuel Tank ................................................................................... Seamless Polyethylene Tank; 8 Gallon CapacityTire Pressure:Front Caster .......................................................................... 25 PSIDrive ..................................................................................... 15 PSIRear ...................................................................................... 15 PSI6
Section 33.3 TRACTOR (CONT'D)Seat ............................................................................................ Milsco Seat With Adjustment Lever For Forward and BackMovementTravel Speed:Forward ................................................................................ 0 - 8 MPH Infinitely VariableReverse ................................................................................. 0 - 4.3 MPH Infinitely Variable3.4 CUTTER DECKNo. of Blades ............................................................................. 3Width of Cut:Mag-61 ................................................................................. 61 in.Mag-72 ................................................................................. 72 in.Blade Size:Mag-61 ................................................................................. 1/4 thick x 21" long, milled edge, 5150 alloy steelMag-72 ................................................................................. 1/4 thick x 24-1/2" long, milled edge, 5150 alloy steelBlade Spindles ........................................................................... Cast Iron with Easy Removable Taper HubsDeck Drive................................................................................. Belt Driven Electric Clutch Connected to Drive Shaft toGearbox on DeckElectric Clutch Type ................................................................. Warner “Mag Stop” Electric ClutchBlade Brake ............................................................................... Lever Controlled Linkage to Band Type Brake. Brake HubConnected to Drive ShaftCutting Height ........................................................................... Switch on Instrument Panel Controls Electric Actuator;Cutting Heights - 1-1/2" to 5-1/2"Deck Tilt .................................................................................... Switch on Instrument Panel Controls Electric ActuatorCutter Deck Belts:Blade and Gearbox Drive (Mag-61) .................................... Scag Part Number - 48204Blade and Gearbox Drive (Mag-72) .................................... Scag Part Number - 48089Blade Drive (Mag-61) .......................................................... Scag Part Number - 48265Blade Drive (Mag-72) .......................................................... Scag Part Number - 481295Gearbox Type............................................................................. Sealed Housing, Bevel Gear and Pinion TypeDrive Shaft ................................................................................ Quick-Disconnect Shaft With Two High Speed U-Joints3.5 HYDRAULIC SYSTEMHydraulic Pump ......................................................................... Sunstrand Series 15Hydraulic Cooler ....................................................................... Part of RadiatorHydraulic Oil Filter ................................................................... 10 Micron Spin-on Element TypeHydraulic Reservoir ................................................................... High Density Polyethylene; 13 Quart Capacity3.6 WEIGHTS AND DIMENSIONSLength:Mag-61 ................................................................................. 120.0"Mag-72 ................................................................................. 120.0"Tracking Width:Mag-61 ................................................................................. 54.0"Mag-72 ................................................................................. 54.0"Overall Width:Mag-61 ................................................................................. 73.0"Mag-72 ................................................................................. 84.0"Overall Width (with Discharge Chute Up):Mag-61 ................................................................................. 62.0"Mag-72 ................................................................................. 73.0"Overall Height ........................................................................... 51.0"Operating Weight:Mag-61 ................................................................................. 1,750 lb.Mag-72 ................................................................................. 1,800 lb.7
Page 1 and 2: OPERATOR'S MANUALMAGNUM IIIMODEL MA
Page 3 and 4: Section 1GENERAL INFORMATION1.1 INT
Page 5 and 6: Section 26. Prolonged exposure to l
Page 7: Section 22.6 SAFETY AND INSTRUCTION
Page 11 and 12: Section 45. Temperature Gauge: Indi
Page 13 and 14: Section 44.4 DIESEL ENGINE BREAK-IN
Page 15 and 16: Section 43. Check that all systems
Page 17 and 18: Section 4-IMPORTANT-Do not wash a h
Page 19 and 20: Section 5TROUBLESHOOTING CUTTING CO
Page 21 and 22: Section 5TROUBLESHOOTINGCONDITION C
Page 23 and 24: Section 6-NOTE-If you turn the nut
Page 25 and 26: Section 66.10 BELT ALIGNMENTBelt al
Page 27 and 28: 40123453821341324539789101112131415
Page 29 and 30: MAG-61, MAG-72 DECK SUPPORT36676970
Page 31 and 32: 44123 4 45691010111213143536151617
Page 33 and 34: ENGINE DECK1 375317 562352418173750
Page 35 and 36: RADIATOR/OIL COOLER1429272233173068
Page 37 and 38: MUFFLER AND AIR CLEANER4312 1561097
Page 39 and 40: 52123456789101112138141516273026463
Page 41 and 42: PUMP AND FAN DRIVE SYSTEMS1412878 7
Page 43 and 44: INSTRUMENT PANEL342121201929313012
Page 45 and 46: WIRING HARNESS AND ELECTRICAL COMPO
Page 47 and 48: 601234 5267981710111411131416131619
Page 49 and 50: 62PARKING BRAKE LINKAGE123456298111
Page 51 and 52: 64123475683072326273493510112918121
Page 53 and 54: FORWARD/REVERSE LINKAGE123451610132
Page 55 and 56: FUEL TANK AND LINES278 35 623292831
Page 57 and 58: HYDRAULIC CIRCUITS12243305262827251
Page 59 and 60:
*DELAY MODULE TIMERCONTROL PANELRED
Page 61:
GREASE FITTING LUBRICATION CHARTLUB
Page 64 and 65:
TRACTOR (CONT'D)Seat ..............
Page 66:
© 1996SCAG POWER EQUIPMENTDIVISION
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