Page 2 - This manual covers the operating instructions
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 engin...
Page 3 - SUBJECT
TABLE OF CONTENTS MODEL STHM SUBJECT PAGE Introduction .................................................................................................. 1 General Safety Instructions .......................................................................... 1 Signal Words .............................
Page 4 - TABLE OF CONTENTS; following section 8
TABLE OF CONTENTS (CONTINUED) SUBJECT PAGE Illustrated Parts List SM 61V, 72A Cutter Deck...................................................................... ... 22-23 Engine Deck ..................................................................................... 24-25 Upper Hydraulics ............
Page 5 - use the contact form to make your request.; GENERAL SAFETY INSTRUCTIONS
1 SIGNAL WORDS This symbol means “Attention! Become Alert!Your Safety is Involved!". The symbol is usedwith the following signal words to attract yourattention to safety messages found on the decals andthroughout this manual. The message that followsthe symbol contains important information abou...
Page 6 - ISO Symbols; WARNING
2 CE Mark Transmission Choke On/Start Spring Tension on Idler Oil Off/Stop S Y M B O L DESCRIPTION S Y M B O L DESCRIPTION ISO Symbols Spinning Blade 48071S Parking Brake WARNING FALLING HAZARD USE ONLY SCAG APPROVED RIDING ATTACHMENTS SEE OPERATOR'S MANUAL 481109 Falling Hazard Thown Object Hazard
Page 8 - BEFORE OPERATING
4 BEFORE OPERATING 1. NEVER allow children to operate this riding mower. Do not allow adults to operate this machine withoutproper instructions. 2. DO NOT mow when children and/or others are present. Keep children out of the mowing area and inthe watchful care of a responsible adult other than theop...
Page 9 - WHILE OPERATING
5 10. Keep hands and feet away from cutting units. 11. Shut the engine off and wait until the blades come to a complete stop before removing the grasscatcher container. 12. Never raise the cutter deck while the blades are rotating. 13. Always park the mower and/or start the engine on a level surface...
Page 10 - MAINTENANCE AND STORAGE
6 MAINTENANCE AND STORAGE 1. Disconnect the spark plug wire from the spark plug to prevent accidental starting of the enginewhen servicing, adjusting or storing the machine. 2. If the mower must be tipped to perform mainte- nance or adjustment, remove the battery, drainthe gasoline from the fuel tan...
Page 12 - MOWER OPERATION; Depress Toe End of Pedal; Figure 1. Forward Operation
8 MOWER OPERATION -NOTE- Use gasoline with an octane rating no less than87. * The right hand foot pedal must be in the NEUTRAL position. * The blade clutch switch must be in the OFF position. * The parking brake must be ON. 3. Start the engine: * Choke as required. If the engine is cold, pull the ch...
Page 13 - When driving over curbs, disengage the cutter; ADJUSTMENTS; PARKING BRAKE; NEUTRAL ADJUSTMENT; Set the engine deck up on jack stands so the wheels; Figure 4. Parking Brake Adjustment; Figure 2. Reverse Operation; Depress Heel End of Pedal
9 6. When driving over curbs, disengage the cutter blades and raise the cutter deck to clear the curb.Drive forward over the curb. After the curb isclear, lower the cutter deck back to normaloperating position. Be sure to leave slack in thecable after lowering the cutter deck. 7. To "freewheel&#...
Page 14 - If the drive wheels rotate in the forward travel; Figure 5. Neutral Adjustment; Check the adjustment of the right foot control pedal; BELT TENSION; To adjust cutter deck drive and blade belts:; Figure 6. Foot Control Pedal Adjustment
1 0 If the drive wheels consistently rotate when footpedal control is in neutral, go to step 4. If the drive wheels inconsistently rotate, i.e. drivewheels sometimes rotate and sometimes do notwhen foot pedal is not depressed, then checkneutral adjustment bolt for "zero free play" in neutral...
Page 15 - Figure 9. Blade Belt Tension Adjustment; Figure 7. Cutter Deck Drive Belt Tension; To adjust blade drive belt: Using a belt tension; To adjust cutter deck drive belt: Adjust the nut so
1 1 Adjust the tension by tightening or looseningthe nut on the J-bolt. (See Figure 9). 4. Replace the belt covers. BELT ALIGNMENT Belt alignment is important for proper performance ofyour Scag mower. If you experience frequent belt wearor breakage, see your authorized Scag Service Dealerfor belt ad...
Page 16 - This adjustment does not affect blade pitch.; Figure 10. Cutter Blade Adjustment
1 2 Adjusting the blade height can be done by moving anynumber of the five smaller spacers on the blade mount-ing bolts to the top or to the bottom of the spindle shaft.All blades should be positioned equally (See Figure 10). The unit is shipped with one spacer on top of spindleand four underneath (...
Page 17 - CUTTER BLADES; Figure 13. Blade Sharpening; CUSTOM-CUT BAFFLE ADJUSTMENT
1 3 A . 3" Position - baffle is installed using the top set of holes on the front baffle welded inside the cutterdeck. (See Figure 15). The Advantage cutter deckwill deliver the best quality-of-cut in very tall, wiry,tough to cut grass. B. 3-1/2" Position (factory setting, Advantage Deck) - ...
Page 19 - LUBRICATION & MAINTENANCE; P R O C E D U R E
1 5 8 Hours (Daily) 25 Hours 40 Hours (Weekly) 100 Hours (Biweekly) 200 Hours (Monthly) XXXX XXXXX XXX 500 Hours or Annually * COMMENTS Add oil as needed - SAE 10W30 Do not over fill MORE OFTEN IF NEEDEDUS Lithium MP White Grease 2125+MORE OFTEN IF NEEDEDMORE OFTEN IF NEEDEDAdd or adjust as required...
Page 20 - CONDITION; Streaking - Strips of; TROUBLESHOOTING CUTTING CONDITIONS
1 6 Stringers - Occasional Low engine RPM Run engine at full 3600 RPM Blades of UncutGrass Ground speed too fast Slow speed to adjust for conditions Wet grass Cut grass after it has dried out Dull blades, incorrect sharpening Sharpen blades Deck plugged, grass accumulation Clean underside of deck Be...
Page 21 - TROUBLESHOOTING; CAUSE
1 7 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 Gr...
Page 23 - TECHNICAL SPECIFICATIONS; ENGINES
1 9 TECHNICAL SPECIFICATIONS ENGINES General Type: Heavy duty industrial/commercial Brand: Kohler 23 HP Pro Series (Spec PS-75523) Models: CV23S Horsepower: 23HP @ 3600 RPM Type: 4 cycle gas, twin cylinder, vertical shaft engine Displacement: 23HP = 674 cc Cylinders: 2 cast-iron sleeves Governor: Me...
Page 25 - NOTES
Page 27 - Description
2 3 1 461861 Cutter Deck, Velocity + (Incl. decals) x 1 461864 Cutter Deck, Advantage (Incl. decals) x 2 461846 Discharge Chute, Velocity Plus x 461296 Discharge Chute, Advantage x 3 04001-09 Bolt, 5/16-18 x 1" Hex Head x x 4 04021-10 Nut, 5/16-18 Elastic Stop x x 5 04029-03 Wing Nut, 3/8-16 x x...
Page 28 - ENGINE DECK
2 4 ENGINE DECK 20 19 23 22 24 25 22 28 31 30 31 28 38 36 38 37 33 45 51 46 40 35 34 56 65 75 57 58 62 61 69 72 71 66 102 19 29 50 16 76 78 79 91 81 92 19 73 69 68 54 70 67 86 87 89 16 83 83 16 16 16 96 19 19 94 19 18 19 95 19 16 3 14 17 12 93 18 38 13 8 7 7 5 6 4 39 2 22 26 15 90 39 29 21 1 9 88 85...
Page 30 - UPPER HYDRAULICS
2 6 SGB027 UPPER HYDRAULICS 5 2 4 7 6 5 12 10 8 12 13 11 1 3 9 16 14 14 14 9 9 24 22 14 9 15 A 14 23 5 A 3 21 18 19 17 20
Page 32 - LOWER HYDRAULICS
2 8 H G A B C D E F C G D E J F B A H J I I LOWER HYDRAULICS 11 1 10 22 2 20 31 30 25 13 15 9 6 23 10 21 3 17 15 14 13 13 11 13 12 5 6 8 16 18 17 4 20 19 19 20 25 4 28 28 9 7 32 32 26 24 26 26 5 26 26 28 28 27 18 29 26 27 26 21 13 33 LOWER HYDRAULICS
Page 35 - CONTROL LINKAGE
3 1 Ref. PartNo. Number Description 1 46328 Control Linkage, Bellcrank (Includes 30, 31) 2 04040-15 Flatwasher, 5/16 (.375 x .875 x .083) 3 04001-13 Bolt, Hex Head 5/16-18 x 2-3/4" 4 04001-19 Bolt, Hex Head 3/8-16 x 1" 5 04040-05 Flatwasher, 3/8 (.406 x .812 x .065) 6 43212 Sleeve, Pump Cont...
Page 36 - INSTRUMENT PANEL AND ELECTRICAL COMPONENTS
3 2 8 7 2 C 21 3 9 6 13 4 9 10 14 15 12 21 15 5 13 19 10 A E F 11 17 16 17 18 18 9 24 21 26 23 22 28 30 31 32 33 29 27 31 32 33 35 34 25 25 INSTRUMENT PANEL AND ELECTRICAL COMPONENTS D 1 21 B 20 STHM99IP&E PTO SwitchConnector INSTRUMENT PANEL AND ELECTRICAL COMPONENTS
Page 38 - RIDER FRAME ASSEMBLY
3 4 14 17 RIDER FRAME ASSEMBLY 19 22 23 24 24 25 27 28 29 30 36 32 33 34 35 38 39 19 31 47 48 45 49 50 51 52 53 52 56 57 60 58 52 51 42 64 61 62 63 65 1 2 3 4 5 6 7 5 8 21 20 18 14 16 15 9 10 11 12 13 26 40 46 41 43 42 44 45 42 66 58 55 59 2 42 37 37 A 55 55 54 STHM99RFA 67,68 RIDER FRAME ASSEMBLY
Page 40 - BRAKE LINKAGE
3 6 4 3 2 5 10 6 7 9 10 11 6 14 15 5 13 11 1 12 11 10 5 10 6 6 11 6 11 11 24 23 22 21 20 19 18 17 16 4 12 BRAKE LINKAGE 8 Deck Weldment 6 SGB050
Page 42 - RELAY; WIRE HARNESS WITH RELAY
3 8 RELAY RED BLUE BLACK SC481275 WIRE HARNESS WITH RELAY PART NO. 481275 GREEN To Starter Red Battery Cable Post To Blue Wire From Engine To Starter To Engine Ground ENGINE GND STARTERSOLENOID TO ENGINE KEYSWITCH FOOT PEDALINTERLOCK BRAKEINTERLOCK MOWERCLUTCH POSITIVEHOURMETER NEGATIVEHOURMETER FUS...
Page 43 - WINCH LIFT SYSTEM
3 9 14 48044 Winch Handle 15 205015 Handle Nut 16 204364 Handle Spring 17 208328 Shaft Bushing 18 404163 Pressure Washer 19 404164 Ratchet Wheel 20 204362 Pressure Plate 21 204012 Shaft Bushing 22 205116 E-Ring 23 304758 Drive Shaft 24 04017-27 Serr. Flg. HH Capscrew, 3/8-16 x 1" 25 04019-04 Ser...
Page 44 - Number; REPLACEMENT DECALS & INFORMATION
4 0 Ref. PartNo. Number Description 6 482289 Decal, Instrument Panel 7 481039 Decal, Warning-Belt Cover 8 48993 Decal, Dump Valve 9 48404 Decal, Metalcraft-Made In USA 10 483201 Decal, 61 Velocity Plus 11 481956 Decal, 72 Advantage 12 482817 Decal, Height of Cut Ref. PartNo. Number Description 1 481...
Page 45 - LIMITED WARRANTY - COMMERCIAL EQUIPMENT
LIMITED WARRANTY - COMMERCIAL EQUIPMENT Any part of the Scag commercial mower manufactured by Scag Power Equipment and found, in the reasonable judgmentof Scag, to be defective in materials or workmanship, will be repaired or replaced by an Authorized Scag Service Dealerwithout charge for parts and ...
