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Scag Power Equipment STHM-23GV, Operator'S Manual

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Scag Power Equipment STHM-23GV Operator'S Manual Download Page 56

52

R

Section 8

REPLACEMENT DECALS AND INFORMATION PLATES

1

3

4

6

8

7

9

13

10

11, 12

2, 2a, 2b

5

Heavy-Duty

Commercial

481971

SPINNING BLADES

kEEP CLEAR

BLADE CONTACT & THROWN

OBJECTS CAN INJURE

483407

WARNING

* keep hands,  feet & clothing clear
* keep all guards in place
* Shut off engine & disengage blade
   clutch before servicing
* Use caution in directing discharge
* Read instruction manual before operating

ROTATING BLADES AND BELTS

DO NOT OPERATE UNLESS GRASS
  CATCHER,  MULCHING kIT OR
DISCHARGE CHUTE IS INSTALLED

483406

48404

483442

BEFORE OPERATING

Read operator's manual
Solicite etiquetas en espanol
a un distribuidor Scag
Make sure guards, shields
& safety devices are in place
& working
Clear area of children,
bystanders & debris
Mow across face of slopes
Trained operators only

WARNING

WARNING

READ OPERATOR'S MANUAL

483402

INSTALL BELT COvER

BEFORE OPERATING MACHINE

WARNING

DO NOT OPERATE WITHOUT DISCHARGE CHUTE,  MULCHING 

kIT,  OR ENTIRE GRASS CATCHER INSTALLED

483405

MANUFACTURED UNDER ONE OR MORE

OF THE FOLLOWING PATENTS:

4,487,006     4,885,903     4,920,733     4,967,543

4,991,382     4,998,948     5,042,239     5,117,617

5,133,176     5,826,416     5,832,708     5,865,018

6,192,666     6,766,633     6,892,519     6,996,962

7,065,946     7,197,863

PATENTS PENDING

Summary of Contents for STHM-23GV

Page 1: ...ng instructions and safety information for your Scag mower Reading this manual can provide you with assistance in maintenance and adjustment procedures to keep your mower performing to maximum efficie...

Page 2: ...aintenance or service stop the machine and remove the spark plug wire and ignition key If a mechanism becomes clogged stop the engine before cleaning Keep hands feet and clothing away from power drive...

Page 3: ...e 8 3 2 Electrical 8 3 3 Power Head 8 3 4 Cutter Deck 9 3 5 Hydraulic System 9 3 6 Weights And Dimensions 9 3 7 Productivity 9 OPERATING INSTRUCTIONS SECTION 4 10 4 1 Controls And Instrument Identific...

Page 4: ...ngine Oil 28 7 5 Engine Fuel System 28 7 6 Engine Air Cleaner 29 7 7 Drive Belt 29 7 8 Battery 30 7 9 Cutter Blades 31 7 10 Tires 32 7 11 Body Deck And Upholstery 32 ILLUSTRATED PARTS LIST SECTION 8 3...

Page 5: ...ESSORIES Attachments and accessories manufactured by companies other than Scag Power Equipment are not approved for use on this machine See Section 8 1 WARNING For pictorial clarity some illustrations...

Page 6: ...ly Variable Linear Cutting Element Basic Symbol 481039S Pinch Point Cutting Element Engage Hour meter Elapsed Operating Hours Cutting Element Disengage STT Models Seat must be installed under the seat...

Page 7: ...y and possible death carefully read the message Be sure to fully understand the causes of possible injury or death Signal Word It is a distinctive word found on the safety decals on the machine and th...

Page 8: ...11 tank outdoors Never fill it indoors Use a funnel or spout to prevent spillage Clean up any spillage before starting the engine DO NOT add fuel to a running or hot engine Allow 12 the engine to cool...

Page 9: ...12 Take all possible precautions when leaving the 13 machine unattended such as disengaging the mower lowering the attachments setting the parking brake stopping the engine and removing the key Diseng...

Page 10: ...djusting the machine Wait for all movement to stop before adjusting cleaning or repairing Disconnect battery or remove spark plug wire before 3 making any repairs Disconnect the negative terminal firs...

Page 11: ...cing Use caution in directing discharge Read instruction manual before operating ROTATING BLADES AND BELTS DO NOT OPERATE UNLESS GRASS CATCHER MULCHING kIT OR DISCHARGE CHUTE IS INSTALLED 483406 SPINN...

Page 12: ...ck Switches Foot Actuated Engine Kill Brake Interlock Blade Clutch Interlock Switch Instrument Panel Ammeter Hour Meter Key Switch Throttle Fuses Manual Choke Blade Brake Clutch Switch Wire Harness 14...

Page 13: ...e Chute SM61V 18 5 Discharge Opening SM72A 14 75 Discharge Opening Spindles Heavy Duty 1 1 8 Top Dimension Spindle Shaft Cast Housing Taper Roller Bearing Low Maintenance with Top Access Grease Fittin...

Page 14: ...Parking Brake Control Figure 4 1 6 Used to engage and disengage the parking brakes Pull the lever back to engage the parking brakes Push the lever forward to disengage the parking brakes Engine Throt...

Page 15: ...terlock system for proper operation See 5 Section 4 2 Check the neutral adjustment See Adjustments 6 page 9 Check tire pressure Adjust pressure if necessary 7 See Section 7 10 Starting The Engine 4 4...

Page 16: ...ion sgb002 Forward Operation Figure 4 2 Depress Toe End of Pedal To stop the forward travel release the drive pedal to the neutral position IMPORTANT When driving over curbs disengage the cutter blade...

Page 17: ...ion Always operate the engine at full throttle to properly 4 maintain cutting speed If the engine starts to lug down reduce the forward speed and allow the engine to operate at maximum RPM Hillside Op...

Page 18: ...ank 4 with fresh clean fuel at the end of every day of operation See Engine Owner s Manual for proper octane requirements Check the tire pressure Adjust pressure if 5 necessary See Section 7 10 Tires...

Page 19: ...charge chute clean 4 When mowing wet or tall grass mow the grass twice 5 Raise the mower to the highest setting for the first pass and then make a second pass to the desired height Use a slow travel s...

Page 20: ...ng Strips of Uncut Grass in Cutting Path Width of Deck SGB018 Dull worn blades Sharpen blades Incorrect blade sharpening Sharpen blades Low engine RPM Run engine at full RPM Belt slipping Adjust belt...

Page 21: ...er Bent spindle area See your authorized SCAG dealer Dull blade Sharpen blade Uneven Cut on Uneven Ground WavyAppearance High Low Scalloped Cut or Rough Contour Width of Deck SGB021 Uneven ground May...

Page 22: ...t Ground speed too fast Slow speed to adjust for conditions Wet grass Cut grass after it has dried out Step Cut Ridge in Center of Cutting path Width of Deck SGB024 Blades not mounted evenly Adjust pi...

Page 23: ...eps for the second brake cable 4 Make sure that both cables are adjusted evenly so that the brakes do not cause the mower to pull to the left or right Neutral Adjustment 6 2 Set the engine deck up on...

Page 24: ...engine The wheels should rotate only 6 when the foot control pedal is depressed Throttle Control And Choke 6 3 Adjustments These adjustments must be performed by your Scag dealer to ensure proper and...

Page 25: ...nd then adjust cutting height Due to the many conditions that exist it is difficult to suggest a setting that will work for every lawn There are however two adjustments that should be made on the cutt...

Page 26: ...ut ter deck in the middle hole B For cutting in the highest position mount the deck in the lowest hole C Setting the cutter deck height will be determined by the type of cutting conditions SGB032 A B...

Page 27: ...e fall cutting leaf pickup and reduce cutter deck blowout To adjust the Custom Cut Baffle height Place the cutter deck in the transport position 1 Remove the hardware securing the Custom Cut 2 Baffle...

Page 28: ...1 2 3 A 3 Position Custom Cut Baffle Adjustment Figure 6 10 1 2 34 A B 1 2 3 4 A B Custom Cut Baffle Adjustment Mounting Slot Selected Mounting Hardware Location Slot A Hole 1 Hole 2 Hole 3 Hole 4 He...

Page 29: ...ase to fittings See paragraph 7 2 X Check tire pressure See paragraph 7 10 X Clean air filter check for damage or loose part See paragraph 7 6 X Check clean air intake and cooling areas See paragraph...

Page 30: ...hite Grease 2125 3 Caster Wheel Bearings 100 Hours Monthly Chassis Grease 2 Idler Arm Pivots 100 Hours Bi Weekly Chassis Grease 4 Rider Frame Pivot 200 Hours Monthly Chassis Grease 2 Control Bell Cran...

Page 31: ...ulic oil Park the mower on a level surface and stop the 1 engine Place a suitable container under the hydraulic oil 2 filter Remove the fill cap from the reservoir and the drain 3 plug from the bottom...

Page 32: ...hicle before filling Remove the machine from the truck or trailer and 7 fuel on the ground If this is not possible then refuel the machine with a portable container rather than from a gasoline dispens...

Page 33: ...ent if required NOTE In extremely dusty conditions it may be necessary to check the element once or twice daily to prevent engine damage Release the two latches securing the air cleaner 1 cover to the...

Page 34: ...starting it must have a negative ground system When connecting the jumper cables connect the 2 positive cable to the positive battery post then connect the negative cable to the negative battery post...

Page 35: ...e See Figure 7 4 Sharpen the cutting edge at the same bevel as the 1 original See Figure 7 4 Sharpen only the top of the cutting edge to maintain sharpness SGB033 Angle Blade Back Do Not Cut In X Must...

Page 36: ...pressures after every 8 hours of operation or daily Caster Wheels Flat Free Drive Wheels 12 PSI Rear Steering 15 PSI Body Deck And Upholstery 7 11 Keep the entire mower clean to inhibit serious heat...

Page 37: ...achments and accessories manufactured by companies other than Scag Power Equipment are not approved for use on this machine Scag approved attachments and accessories Mulch Plate p n 9288 9262 Hurrican...

Page 38: ...5 21 71 25 70 3 8 67 66 65 8 68 1 55 56 38 60 64 63 59 58 62 6 5 5 2 3 15 16 17 27 28 7 8 9 26 10 7 9 13 10 8 14 8 10 7 9 11 12 29 32 35 36 37 43 34 39 37 40 29 41 30 44 30 20 33 48 38 47 46 47 50 51...

Page 39: ...X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 6...

Page 40: ...9 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 63 59 60 52 32 49 47 48 4...

Page 41: ...rm Incl Pin Clip Clip Hub Assembly Includes item 50 Brake Drum Rim and Tire Assembly Incl 48 49 Tire 20 x 10 x 10 4 Ply Rim Only Bolt Hub Wheel Nut Castle Nut 1 0 20 UNEF Spacer Clutch Key 1 4 x 1 4 x...

Page 42: ...38 R Section 8 UPPER HYDRAULICS SGB027 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 43: ...Hydraulic Cap Hydraulic Tank Hose Pump to Oil Cooler Hose Oil Cooler to Tank Clamp Hose Coupling Flare Swivel Tube Union Oil Cooler Assembly Carriage Bolt 5 16 18 x 3 4 Bracket Oil Cooler Elbow 90 De...

Page 44: ...40 R Section 8 LOWER HYDRAULICS...

Page 45: ...err Flng Hex Hd Capscrew 1 4 20 x 1 2 Filter Head Filter Spin On Lube Hose Assembly Hose Assembly Elbow 90 Degrees Hairpin Cotter Lever Dump Valve Connector Flare Swivel with Hose Barb Hose Clamp Hose...

Page 46: ...42 R Section 8 CONTROL LINKAGE 10 11 14 15 12 13 17 16 18 17 14 20 8 5 9 21 10 22 23 11 13 15 2 25 14 8 5 7 6 5 4 5 4 30 29 27 11 26 3 1 6 30 28 19 24 12 sgb011...

Page 47: ...d 5 16 18 x 2 3 4 Bolt Hex Hd 3 8 16 x 1 Flatwasher 3 8 406 x 812 x 065 Sleeve Pump Control Link Link Speed Control Hex Locknut 3 8 16 Control Arm Pump Carriage Bolt 3 8 16 x 1 1 2 Flatwasher 3 8 391...

Page 48: ...ELECTRICAL COMPONENTS 8 7 2 C 21 3 9 6 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 D 1 21 B 20 STHM2008IP E PTO Switch Connector...

Page 49: ...th Hex Nut 10 24 Ammeter Includes Bracket and Hardware D E F Ammeter Bracket Lockwasher 10 Int Tooth Hex Nut 10 32 Phillips Rd Hd Screw 10 32 x 1 1 2 Bracket Fuse Holder Elastic Stop Nut 10 32 Carriag...

Page 50: ...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 19 9 10 11 12 13 26 40 46 41 43 42 44 45 42 66 58 55 59 2 42 37 37 A 5...

Page 51: ...h Rear Wheel Yoke Hex Elastic Stop Nut 5 8 11 Bolt Hex Hd 5 8 11 x 9 Spacer Rear Wheel short Seal Grease Bearing Cone Bearing Cup 36 37 37A 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57...

Page 52: ...48 R Section 8 BRAKE LINKAGE 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 8 Part of Engine Deck Weldment 6 SGB050...

Page 53: ...Hd Nut 3 8 16 Hex Locknut 3 8 16 Swivel Hairpin Cotter 094 x 1 62 Hex Hd Bolt 3 8 16 x 1 1 4 Sleeve Hydro Linkage Link Cam Grip Parking Brake Handle Parking Brake Flatwasher 3 8 391 x 938 x 105 Hex N...

Page 54: ...50 R Section 8 WINCH LIFT SYSTEM 11 9 14 12 13 25 19 20 23 22 21 4 1 2 5 6 7 16 Steering Frame 8 3 24 18 17 10 15 sgb008...

Page 55: ...4 204362 204012 205116 304758 04017 27 04019 04 Winch Assembly Incl 1 7 11 13 15 23 Locknut 7 16 14 Ratchet Pawl Ratchet Bolt Flatwasher Ratchet Spacer Ratchet Spring Cable Guide Winch Cable Assembly...

Page 56: ...06 48404 483442 BEFORE OPERATING Read operator s manual Solicite etiquetas en espanol a un distribuidor Scag Make sure guards shields safety devices are in place working Clear area of children bystand...

Page 57: ...82817 461985 Decal Heavy Duty Commercial Decal Scag Logo Cutter Deck Decal Scag Logo Battery Box Front Decal Scag Logo Seat Back Decal Danger Spinning Blades Decal Warning Rotating Blades Decal Patent...

Page 58: ...ENGINE GND STARTER SOLENOID TO ENGINE KEY SWITCH FOOT PEDAL INTERLOCK BRAKE INTERLOCK MOWER CLUTCH HOURMETER POSITIVE HOURMETER NEGATIVE FUSES AMMETER POSITIVE AMMETER NEGATIVE MOWER ENGAGEMENT PTO SW...

Page 59: ...nd the expense of returning it to the owner after repair will be paid for by the owner Scag s responsibility is limited to making the required repairs and no claim of breach of warranty shall be cause...

Page 60: ...2008 Scag Power Equipment Division of Metalcraft of Mayville Inc...

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