Page 2 - WARNING; All MAG Machines
FAILURE TO FOLLOW SAFE OPERATING PRACTICES MAY RESULT IN SERIOUS INJURY. * Keep all shields in place, especially the grass discharge chute. * Before performing any maintenance or service, stop the machine and remove the spark plug wire and ignition key. * If a mechanism becomes clogged, stop the eng...
Page 3 - GENERAL INFORMATION; USE OF OTHER THAN ORIGINAL SCAG; Section 1; DIRECTION REFERENCE; Figure 1-1 Serial Plate Locations
1 GENERAL INFORMATION 1.1 INTRODUCTION Your mower was built to highest standards in the industry. However, the prolonged life and maximum efficiency of your mower depend on you following the operating, maintenance and adjustment instructions in this manual. If additional information or service is ne...
Page 4 - SAFETY INFORMATION; Section 2
2 SAFETY INFORMATION 2.1 INTRODUCTION Your mower is only as safe as the operator. Carelessness or operator error may result in serious bodily injury or death. Hazard control and accident prevention are dependent upon the awareness, concern, prudence, and proper training of the personnel involved in ...
Page 5 - OPERATION CONSIDERATIONS
3 Section 2 WARNING: This machine is equipped with an interlocksystem intended to protect the operator andothers from injury. This is accomplished bypreventing the engine from starting unless theparking brake is applied and the blades aredisengaged. The system also shuts off theengine if the operato...
Page 6 - DO NOT; MAINTENANCE CONSIDERATIONS; Hydraulic fluid is under high pressure.
4 Section 2 9. DO NOT turn sharply. Use care when backing up. 10.Use counterweights or wheel weights when suggested in this manual. 11.Watch for traffic when crossing roads or operating near roadways . 12.Mow only in daylight or good artificial light. 13.Take all possible precautions when leaving th...
Page 7 - INSTALL BELT COVER BEFORE; READ OPERATOR'S MANUAL; ROTATING BLADES AND BELTS; DANGER; SPINNING BLADE; KEEP CLEAR; SAFETY AND INSTRUCTIONAL DECALS
5 Section 2 WARNING INSTALL BELT COVER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL 481039 ROTATING BLADES AND BELTS WARNING KEEP HANDS, FEET & CLOTHING CLEARKEEP ALL GUARDS IN PLACESHUT OFF ENGINE & DISENGAGE BLADECLUTCH BEFORE SERVICINGCLEAR AREA OF DEBRIS BEFORE MOWINGUSE CAUTION IN DI...
Page 8 - SPECIFICATIONS; Section 3
6 SPECIFICATIONS Section 3 3.1 ENGINE General Type ............................................................................. Heavy Duty Industrial/Commercial Diesel Brand ......................................................................................... Kubota 28 HP Super 5 Series, Electr...
Page 9 - WEIGHTS AND DIMENSIONS
7 Section 3 3.3 TRACTOR (CONT'D) Seat ............................................................................................ Milsco Seat With Adjustment Lever For Forward and Back Movement Travel Speed: Forward ................................................................................ 0 ...
Page 10 - OPERATING INSTRUCTIONS; Section 4
8 OPERATING INSTRUCTIONS Do not attempt to drive this mower unless youhave read this manual. Learn the location andpurpose of all controls and instruments beforeyou operate this mower. Do not hold the key in the START position longer than 15 seconds. If the engine does not start, return the key to t...
Page 12 - SAFETY INTERLOCK SYSTEM
10 Left Foot Parking Mower Engine Lifted From Brake Blade Operates Interlock Brake Pedal Test Yes No On Off On Off Yes No 1 - X X X X 2 X X X X 3 - X X X X 4 X X X X 5 X X X X 4.2 SAFETY INTERLOCK SYSTEM This mower is equipped with a safety system that prevents the engine from starting unless the mo...
Page 13 - A. Adjusting Steering Handle Height
11 4.4 DIESEL ENGINE BREAK-IN The proper break-in of a new diesel engine can make a difference in the performance and life of the engine. Perform the following break-in procedure during the first 50 hours of operation: 1. A new engine should be operated with as near full load as possible. However, t...
Page 15 - HILLSIDE OPERATION; NEVER; Avoid high-speed turns on all surfaces. Tires; FORWARD; ENGAGING THE MOWER; Do not attempt; Do not engage the mower blades when
13 3. Check that all systems function correctly. 4. When traveling, the throttle control can be adjusted to increase or decrease travel speed. 5. Reduce speed when turning around trees, shrubs, etc. 3. Always operate the engine at full throttle to properly maintain cutting speeds. If the engine star...
Page 17 - RECOMMENDATIONS FOR MOWING; Do not wash a hot or running engine. Use; Close
15 Figure 4-10 Dump Valve Handle 4.13 RECOMMENDATIONS FOR MOWING 1. Keep the mower deck and discharge chute clean. 2. Mow with sharp blades. A dull blade will tear grass, resulting in poor lawn appearance and takes extra power (slow mowing speed). 3. The discharge deflector must not be removed and m...
Page 18 - TILTING THE MOWER DECK; Stop the traveling movement of the mower and engage
16 Figure 4-11 Mower Cutting Height Gauge 4.15 TILTING THE MOWER DECK 1. Stop the traveling movement of the mower and engage the blade brake. 2. Use the deck tilt control switch on the instrument panel to raise the deck. 3. Before lowering the deck, observe that there are no objects under the deck. ...
Page 19 - Streaking - Strips of; TROUBLESHOOTING CUTTING CONDITIONS; Stringers - Occasional; Section 5
17 Width of Deck SGB018 CONDITION CAUSE CURE Width of Deck SGB020 Width of Deck Width of Deck SGB019 Streaking - Strips of Not enough overlapping Increase the overlap of each Uncut Grass Between between rows pass Cutting Paths TROUBLESHOOTING CUTTING CONDITIONS Stringers - Occasional Low engine RPM ...
Page 20 - CONDITION; TROUBLESHOOTING; CAUSE; Sloping Ridge Across
18 CONDITION TROUBLESHOOTING CAUSE CURE Sloping Ridge Across Tire pressures not equal Check and adjust tire pressure Width of Cutting Path Wheels uneven Check and adjust tire pressure Deck mounted incorrectly See your authorized SCAG dealer Uneven Cut on Flat Lift worn off of blade Replace blade Gro...
Page 22 - PARKING BRAKE ADJUSTMENT; ADJUSTMENTS; Section 6
20 6.1 PARKING BRAKE ADJUSTMENT The parking brake linkage should be adjusted whenever the parking brake lever is placed in the Engage position and the parking brake will not hold the mower from moving. A minor adjustment can be made at the control lever by loosening the jam nut shown in Figure 6-1...
Page 23 - CUTTER BRAKE LINKAGE; If you turn the nut too much, you will com-
21 Figure 6-2 Throttle Control Adjustment 6.4 CUTTER BRAKE LINKAGE The cutter brake linkage is self-adjusting. If the brake will not hold the cutter blades from turning, consult your Scag dealer. Do not operate the mower if the cutter brake is not functioning properly. 6.5 FAN BELT ADJUSTMENT 1. Rem...
Page 24 - PUMP DRIVE BELT ADJUSTMENT; CUTTER DRIVE BELT ADJUSTMENTS; ALTERNATOR BELT ADJUSTMENT
22 3. After proper tension is obtained, tighten the two bolts and install the pump belt guard. 6.6 PUMP DRIVE BELT ADJUSTMENT To adjust belt tension, turn the adjusting nut (Figure 6-1) until 1/2 inch deflection in belt is obtained with 10 pounds of pressure. See Engine Drive Belts, section 7.9 for ...
Page 25 - CUTTER DECK ADJUSTMENTS; Before checking for proper cutter deck adjust-; DECK LEVEL; To adjust the pitch, loosen the jam nut on both; PITCH
23 6.10 BELT ALIGNMENT Belt alignment is important for proper performance of your Scag mower. If you experience frequent belt wear or breakage, see your authorized Scag service dealer for belt adjustment. 6.11 CUTTER DECK ADJUSTMENTS Due to many conditions that exist, it is difficult to suggest a se...
Page 31 - RIDER FRAME
44 1 2 3 4 4 5 6 9 10 10 11 12 13 14 35 36 15 16 17 18 18 19 20 21 390S0113 23 24 26 25 27 28 22 16 39 41 38 33 32 31 37 34 40 30 29 42 46 43 44 45 48 48 49 50 54 52 53 47 57 41 46 51 46 8 7 38 55 3 56 58 59 RIDER FRAME 60 61
Page 33 - ENGINE DECK
46 1 37 2 3 4 5 17 6 8 9 38 10 11 12 13 16 15 17 18 14 14 19 20 21 24 25 26 28 27 31 390S0114 32 33 34 30 15 54 44 43 17 42 41 37 40 37 36 19 35 17 56 47 46 48 50 37 18 14 45 17 16 49 51 52 53 51 57 7 56 55 22 23 29 17 39 ENGINE DECK 14 68 65 69 71 A 59 60 61 58 67 61 58 66 62 70 63 B A 63 64 65 B 6...
Page 37 - MUFFLER AND AIR CLEANER
50 1 3 4 5 6 7 8 MUFFLER AND AIR CLEANER 2 1 390S0116 9 10 11 17 18 15 16 14 14 15 12 15 15 13 19 20
Page 39 - DECK DRIVE SYSTEM
52 1 2 3 4 5 6 7 8 9 10 11 12 13 8 14 15 16 27 30 26 46 33 50 32 50 9 45 34 35 36 37 29 38 39 40 41 42 48 24 43 24 47 18 27 28 28 19 20 23 22 21 23 51 31 44 46 49 17 25 DECK DRIVE SYSTEM 390S0117
Page 41 - PUMP AND FAN DRIVE SYSTEMS
54 49 30 31 8 7 7 8 32 21 40 41 42 43 33 44 4 6 7 8 9 10 11 12 7 8 7 14 15 17 11 17 7 8 29 19 23 25 26 27 28 34 35 36 37 38 39 47 46 45 48 1 2 3 4 5 3 18 49 50 13 8 PART OFENGINE 7 10 8 7 PUMP AND FAN DRIVE SYSTEMS 16 22 20 24 21 390S0118
Page 43 - INSTRUMENT PANEL
56 1 2 3 4 6 7 8 9 10 11 12 5 9 13 14 15 16 9 18 17 19 20 21 22 23 18 24 25 11 12 26 20 21 29 15 20 19 32 29 20 21 12 11 12 11 21 31 9 30 28 33 27 9 25 11 12 INSTRUMENT PANEL 16 20 19 390S0119
Page 45 - WIRING HARNESS AND ELECTRICAL COMPONENTS
58 1 2 3 4 5 6 7 8 9 10 11 12 13 11 2 15 15 14 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 18 34 33 32 WIRING HARNESS AND ELECTRICAL COMPONENTS 390S0120
Page 47 - CUTTER BRAKE LINKAGE
60 1 2 3 4 5 2 6 7 9 8 17 10 11 14 11 13 14 16 13 16 19 20 21 37 34 14 33 21 22 25 18 15 38 24 36 25 40 41 27 24 28 21 32 11 26 27 14 21 11 41 30 31 6 35 12 14 39 39 25 25 23 29 40 40 40 CUTTER BRAKE LINKAGE 390S0121
Page 49 - PARKING BRAKE LINKAGE
62 PARKING BRAKE LINKAGE 1 2 3 4 5 6 29 8 11 10 8 7 4 9 12 6 13 14 15 16 17 16 18 14 6 19 3 5 20 21 22 23 24 25 12 24 23 22 21 20 20 26 27 28 MAG008 30 6 8 7 6 31 32 4 3 33 16 24 16 8 6 34 35
Page 51 - THROTTLE LINKAGE
64 1 2 3 4 7 56 8 30 7 23 26 27 34 9 35 10 11 29 18 12 13 25 38 17 23 26 27 30 36 14 39 16 17 18 19 20 21 23 19 24 22 21 31 28 37 33 28 32 15 THROTTLE LINKAGE 390S0123
Page 53 - FORWARD/REVERSE LINKAGE
66 1 2 3 4 5 4 6 4 7 8 9 10 2 1 16 10 11 12 13 12 14 15 3 18 17 20 19 21 12 22 24 FORWARD/REVERSE LINKAGE 390S0124
Page 55 - FUEL TANK AND LINES
68 1 2 23 27 8 3 5 6 7 9 10 9 31 4 16 15 16 16 15 17 16 13 18 16 15 19 16 21 16 15 22 14 20 16 23 24 25 26 14 11 16 16 15 FUEL TANK AND LINES 390S0125 29 28 30
Page 57 - HYDRAULIC CIRCUITS
70 23 24 25 1 2 3 4 2 2 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 31 26 2 27 6 13 6 13 6 17 6 28 2 29 30 390S0126 6 HYDRAULIC CIRCUITS 16
Page 60 - HEAVY DUTY; REPLACEMENT DECALS AND INFORMATION
73 Ref. PartNo. Number Description 1 48071 Decal, Danger - Spinning Blades 2 481040 Decal, Warning - Rotating Blades 3 481326 Decal, Magnum III 4 48072 Decal, Heavy Duty Commercial 5 481039 Decal, Warning - Belt Cover 6 48404 Decal, Metalcraft - Made In USA 7A 481355 Decal, Scag Logo - 12" x 4.2...
Page 61 - GREASE FITTING LUBRICATION CHART; + Compatible Greases: Mobilix #2 found at Mobil Service Station
74 GREASE FITTING LUBRICATION CHART LUBRICATION NO. OF LOCATION INTERVAL LUBRICANT PLACES 1. Cutter Drive Spindle 40 Hours/Weekly +Lithium MP White Grease 2125 1 2. Cutter Deck Spindles 40 Hours/Weekly +Lithium MP White Grease 2125 3 3. Caster Wheel Bearing 100 Hours/Bi-Monthly Chassis Grease 2 4. C...
Page 63 - ELECTRICAL
76 SPECIFICATIONS ENGINE General Type ............................................................................. Heavy Duty Industrial/Commercial DieselBrand ......................................................................................... Kubota 28 HP Super 5 Series, Electric StartModel ...
Page 64 - CUTTER DECK; HYDRAULIC SYSTEM
77 TRACTOR (CONT'D) Seat ............................................................................................ Milsco Seat With Adjustment Lever For Forward and Back Movement Travel Speed: Forward ................................................................................ 0 - 8 MPH Infin...
Page 65 - LIMITED WARRANTY-COMMERCIAL EQUIPMENT
If incorrectly used, this machine can cause severe injury. Those who use and maintain the machine should be trained in its proper use, warned of its dangers, and should read the entire manual before attempting to set up, operate, adjust or service the machine. LIMITED WARRANTY-COMMERCIAL EQUIPMENT A...
