Scag Power Equipment STWC Operator's Manual
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Scag Power Equipment STWC Operator's Manual

Scag Power Equipment STWC Operator's Manual

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MODEL STWC
© 2003
SCAG POWER EQUIPMENT
DIVISION OF METALCRAFT OF MAYVILLE, INC.
THIS MANUAL CONTAINS THE OPERATING
INSTRUCTIONS AND SAFETY INFORMA-
TION FOR YOUR SCAG MOWER. READING
THIS MANUAL CAN PROVIDE YOU WITH
ASSISTANCE IN MAINTENANCE AND AD-
JUSTMENT PROCEDURES TO KEEP YOUR
MOWER PERFORMING TO MAXIMUM EFFI-
CIENCY. THE SPECIFIC MODELS THAT THIS
BOOK COVERS ARE CONTAINED ON THE
INSIDE COVER. BEFORE OPERATING YOUR
MACHINE, PLEASE READ ALL THE INFOR-
MATION ENCLOSED.
PART NO. 03141
PRINTED 8/03
PRINTED IN USA

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Summary of Contents for Scag Power Equipment STWC

  • Page 1 MODEL STWC THIS MANUAL CONTAINS THE OPERATING INSTRUCTIONS AND SAFETY INFORMA- TION FOR YOUR SCAG MOWER. READING THIS MANUAL CAN PROVIDE YOU WITH ASSISTANCE IN MAINTENANCE AND AD- JUSTMENT PROCEDURES TO KEEP YOUR MOWER PERFORMING TO MAXIMUM EFFI- CIENCY. THE SPECIFIC MODELS THAT THIS BOOK COVERS ARE CONTAINED ON THE INSIDE COVER.
  • Page 2 WARNING: 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 engine before cleaning.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SUBJECT PAGE Section 1 - General Information Introduction ..........................1 Directional Reference ......................1 Servicing the Engine and Drive Train Components ..............1 Symbols ..........................2-3 Section 2 - Safety Information Introduction ..........................4 Signal Words ...........................4 Before Operation Considerations ...................4 Operation Considerations ......................5 Roll Over Protection System (Optional) .................7 Maintenance Considerations ....................8...

  • Page 4: Subject Page

    TABLE OF CONTENTS (CONT'D) SUBJECT PAGE Section 6 - Adjustments Parking Brake Adjustment ....................22 Travel Adjustments ....................... 23 Throttle Control and Choke Adjustments ................24 Belt Adjustment ........................24 Belt Alignment ........................24 Cutter Deck Adjustments ..................... 25 Section 7 - Maintenance Maintenance Chart .......................

  • Page 5: Section 1 - General Information

    If additional information or service is needed, contact your obligation. Scag Power Equipment Dealer. 1.2 DIRECTION REFERENCE We encourage you to contact your dealer for repairs. All Scag dealers are informed of the latest methods to service this equipment and provide prompt and efficient service in The “Right”...

  • Page 6: Symbols

    ISO Symbols CE Mark SYMBOL DESCRIPTION SYMBOL DESCRIPTION Choke Transmission Parking Brake Spinning Blade 48071S On/Start Spring Tension on Idler Off/Stop WARNING Falling Hazard FALLING HAZARD USE ONLY SCAG APPROVED RIDING ATTACHMENTS SEE OPERATOR'S MANUAL 481109...

  • Page 7: Symbols

    SYMBOL DESCRIPTION SYMBOL DESCRIPTION Slow Fast Cutting Element - Basic symbol Continuously Variable - Linear Cutting Element - Engage Pinch Point 481039S Hourmeter/Elapsed Operating Hours Cutting Element - Disengage Read Operator's Manual Thown Object Hazard Keep Bystanders Away...

  • Page 8: Section 2 - Safety Information

    Section 2 SAFETY INFORMATION 2.1 INTRODUCTION Your mower is only as safe as the operator. Carelessness The signal word “DANGER” denotes that an extremely or operator error may result in serious bodily injury or death. Hazard control and accident prevention are dependent upon hazardous situation exists on or near the machine that could result in high probability of death or irreparable injury if the awareness, concern, prudence, and proper training of...

  • Page 9: Operation Considerations

    Section 2 2.3 BEFORE OPERATION 11. Keep flammable objects (cigarettes, matches, etc.), open flames and sparks away from the fuel tank and CONSIDERATIONS (CONT'D) fuel container. 5. DO NOT wear loose fitting clothing that could get 12. Equipment must comply with the latest requirements tangled in moving parts.
  • Page 10 Section 2 2.4 OPERATION CONSIDERATIONS the attachments, setting the parking brake, stopping the engine, and removing the key. (CONT'D) 13. Disengage power to the attachments when transporting 3. To prevent tipping or loss of control, start and stop or when not in use. smoothly, avoid unnecessary turns and travel at reduced speed.

  • Page 11: Roll Over Protection System (Optional)

    Failure to do so could result in serious injury or death. Figure 2-1. STWC With Optional Roll Over Protection System Installed. 2. Whenever possible, avoid operating the machine near ditches, embankments and steep inclines.

  • Page 12: Maintenance Considerations

    2.6 MAINTENANCE CONSIDERATIONS 1. Never make adjustments to the machine with the engine running unless specifically instructed to do so. If the engine is running, keep hands, feet, and clothing away from moving parts. 2. Remove the key from the ignition switch to prevent accidental starting of the engine when servicing or adjusting the machine.

  • Page 13: Safety And Instructional Decals

    2.6 SAFETY AND INSTRUCTIONAL DECALS 481039 482285 481568 482286 482290 482834 482709 482576 STC Safety Decals...

  • Page 14: Section 3 - Specifications

    SPECIFICATIONS 3.1 ENGINE General Type ................Heavy Duty Industrial/Commercial Gasoline Brand ..................Kohler Horsepower ................27 hp (Spec. #) ( Scag Model STWC61A-27CV) Type 4 Cycle Gasoline, Twin Cylinder, Horizontal Shaft Cylinders ..................2 with Cast Iron Sleeves Governor ..................Mechanical Type with Variable Speed Control Set At 3800 RPM Idle Speed ..................

  • Page 15: Cutter Deck

    3.3 TRACTOR (CONT'D) -NOTE- The machine will travel at 10 mph for Travel Speed: transport purposes. For best cutting Forward ................. 0-10 MPH performance the forward travel speed Reverse .................. 0-5 MPH should be adjusted depending upon the 3.4 CUTTER DECK cutting conditions.

  • Page 16: Section 4 - Operating Instructions

    Section 4 OPERATING INSTRUCTIONS 1. Ignition Switch (Figure 4-1). Used to start the CAUTION: engine and has three positions; OFF, ON, and START. Do not attempt to operate this mower unless you have read this manual. Learn the location and 2.

  • Page 17: Safety Interlock System

    Section 4 5. Hourmeter (Figure 4-1). Indicates the number of DUMP VALVE CONTROL LEVERS hours the engine has been operated. It operates whenever the ignition key switch is in the ON position. It can be used to keep track of maintenance intervals and the amount of time required to perform various tasks.

  • Page 18: Initial Run-In Procedures

    Section 4 4.3 INITIAL RUN-IN PROCEDURES (First 6. Turn the ignition key to the START position and release the key as soon as the engine starts. Do not Day of Use or Approximately 10 Hours) hold the key in the START position for more than 15 seconds at a time.

  • Page 19: Engaging The Deck Drive

    Section 4 To steer the mower right while traveling forward, pull the To steer right while traveling in reverse, allow the right right steering control lever back. The further the lever is steering control lever to move forward. The further the pulled back, the quicker the mower will turn right.

  • Page 20: Hillside Operation

    Section 4 3. To disengage the deck drive, push the switch in to 4.9 AFTER OPERATION the disengage position. 1. Wash the entire mower after each use. Do not use 4. Always operate the engine at full throttle to properly high pressure spray or direct the spray onto maintain cutting speed.

  • Page 21: Moving Mower With Engine Stopped

    Section 4 4.11 MOVING MOWER WITH ENGINE 4.13 ADJUSTING CUTTING HEIGHT STOPPED The mower deck can be adjusted from a height of 1-inch to 5-1/2 inches at 1/4-inch intervals. To adjust the cutting To “free-wheel” or move the mower around without the height: engine running, place the dump valve levers in the FREE-WHEEL position (Figure 4-2, Page 11).

  • Page 22: Towing

    Section 4 HEIGHT ADJUSTMENT PEDAL LANYARD STC 2001 ACH Figure 4-5 Adjusting Cutting Height 4.14 TOWING (OPTIONAL HITCH ACCESSORY) 1. Never allow children or others in or on towed equipment. 2. Tow only with a machine that has a hitch designed for towing.

  • Page 23: Section 5 - Troubleshooting Cutting Conditions

    Section 5 TROUBLESHOOTING CUTTING CONDITIONS CAUSE CURE CONDITION Stringers - Occasional Low engine RPM Run engine at full RPM Blades of Uncut Grass 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...
  • Page 24 Section 5 TROUBLESHOOTING (CONT'D) CAUSE CURE CONDITION Uneven Cut on Flat Lift worn from blade Replace blade Ground - Wavy High-Low Blade upside down Mount with cutting edge toward Appearance, ground Scalloped Cut, or Rough Contour Deck plugged, grass accumulation Clean underside of deck Too much blade angle (deck pitch) Adjust pitch and level...
  • Page 25 Section 5 TROUBLESHOOTING (CONT'D) CAUSE CURE CONDITION Scalping - Blades Low tire pressures Check and adjust pressures Hitting Dirt or Cutting Very Close to Ground speed too fast Slow speed to adjust for conditions the Ground Cutting too low May need to reduce ground speed, raise cutting height, change direction of cut, and/or change pitch and level Rough terrain...

  • Page 26: Section 6 - Adjustments

    Section 6 -NOTE- ADJUSTMENTS If this procedure does not achieve proper brake adjustment, please contact your authorized Scag 6.1 PARKING BRAKE ADJUSTMENT dealer. WARNING: STC2002BA Do not operate the mower if the parking brake is not operable. Possible severe injury could result.

  • Page 27: Travel Adjustments

    Section 6 TRAVEL ADJUSTMENTS 3. Run the engine at full operating speed and check if the machine creeps forward or backwards. Neutral or tracking adjustments will need to be made if: 4. Adjust the RH wheel by loosening the jam nuts on the steering control rod and turning the rod until the A.

  • Page 28: Throttle Control And Choke Adjustments

    Section 6 Tracking Adjustment A. Stop the machine and place the steering control levers in the neutral position. Loosen the lock nuts securing the ball joints at each end of the CAUTION: RH steering control rod. Rotate the control rod to shorten the rod and tighten the lock nuts.

  • Page 29: Cutter Deck Adjustments

    Section 6 6.6 CUTTER DECK ADJUSTMENTS 2. Loosen the elastic stop nut and move the bolt up or down in the slot to adjust the cutter deck until the distance from the top of the cutter deck to the floor Cutter deck level, pitch and height are set at the factory.
  • Page 30 Section 6 Cutter Deck Height 3. Check the cutter deck cutting height by placing the lanyard pin in the 3" position on the cutting height index. Release the deck from the transport positon The cutter deck height adjustment is made to ensure that and allow the deck to move to the 3"...
  • Page 31 Section 6 To adjust the Custom-Cut Baffle height: MIDDLE SET OF HOLES CARRIAGE BOLT FOR 3-1/2" SETTING 1. Place the cutter deck in the transport position. 2. Remove the hardware securing the Custom-Cut Baffle to the cutter deck. (See Figure 6.7). -NOTE- 2004 CCB - 3-1/2"...

  • Page 32: Maintenance Chart

    Section 7 MAINTENANCE 7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS HOURS Break-In 40 100 200 500 Procedure Comments (First 10) Check all hardware for tightness Check hydraulic oil level See paragraph 7.3 Check all belts for proper alignment See paragraph 7.8 Change engine oil and filter See paragraph 7.4 (First 5)

  • Page 33: Lubrication Fitting Points

    Section 7 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS (CONT'D) HOURS Break-In 40 100 200 500 Procedure Comments (First 10) Apply grease to fittings See paragraph 7.2 Check hardware for tightness Change engine oil filter See paragraph 7.4 Check hydraulic oil level See paragraph 7.3 Replace engine fuel filter See paragraph 7.5...
  • Page 34 Section 7 GREASE FITTING LUBRICATION Lubricant Interval Lithium MP White Grease 2125 (40 Hours/Weekly) Chassis Grease (100 Hours/Bi-monthly) Chassis Grease (200 Hours/Monthly) Chassis Grease (500 Hours/Yearly) Figure 7.1 Lubrication Fitting Points...

  • Page 35: Hydraulic System

    Section 7 7.3 HYDRAULIC SYSTEM B. Changing Hydraulic Oil A. Checking Hydraulic Oil Level The hydraulic oil should be changed after every 500 hours or annually, whichever occurs first. The oil should also be changed if the color of the fluid has become black or milky. The hydraulic oil level should be checked after the first 10 A black color and/or a rancid odor usually indicates possible hours of operation.

  • Page 36: Engine Oil

    Section 7 4. Fill the reservoir to 3-1/4" inches from the top of the filler neck with SAE 20W50 motor oil. ENGINE OIL ENGINE OIL FILLER DRAIN PLUG 5. Replace the reservoir fill cap. Start the engine and ENGINE OIL FILTER drive forward and backward for two minutes.

  • Page 37: Engine Air Cleaner

    Section 7 1. Close the shutoff valve. Remove the two clamps Remove the air cleaner and inspect. securing the fuel filter to the fuel hose. Remove the fuel filter, noting the proper direction. 3. Clean or replace the air cleaner and foam pre- cleaner as recommended by the engine 2.
  • Page 38 Section 7 A. Charging the Battery WARNING: Refer to the battery charger’s manual for specific Electric storage battery fluid contains sulfuric instructions. acid which is POISON and can cause SEVERE CHEMICAL BURNS. Avoid contact of fluid Under normal conditions the engine’s alternator will have with eyes, skin, or clothing.

  • Page 39: Drive Belts

    Section 7 7.8 DRIVE BELTS B. Blade Sharpening All drive belts are spring loaded and self-tensioning, however -NOTE- after the first 2, 4, 8 and 10 hours of operation, the belts If possible, use a file to sharpen the blade. Using should be checked for proper alignment and wear.

  • Page 40: Tires

    Section 7 7.10 TIRES 3. Secure the cutter blades to prevent them from rotating, (Use the optional Blade Buddy tool, P/N 9212, to assist in securing the cutter blades), remove the nut from the Check the tire pressures after every 8 hours of operation blade attaching bolt.

  • Page 41: Notes

    Section 8 NOTES...

  • Page 42: Stwc61A Cutter Deck

    Section 8 61A" CUTTER DECK 55 14 53 29 21 54 64 60 62 61 59 58 66 63 "A" "A" 6 7 8 5 25 STC 2003 CD61...
  • Page 43 Section 8 61A" CUTTER DECK Ref. Part Ref. Part No. No. Description No. No. Description 461656 Cutter Deck Advantage 481025 Seal, Lower 04003-04 Bolt, Carr. 5/16-18 x 1” 43297 Bushing, Bottom 04019-04 Nut, 3/8-16 Serrated Flange 481035 Nut, Special 1-1/16 - 18 481625-01 Wing Nut, 3/8-16 43590 Spacer, Spindle...

  • Page 44: Cutter Deck Controls

    Section 8 CUTTER DECK CONTROLS CUTTER DECK STC 2003 CDC...

  • Page 45: Cutter Deck Controls

    Section 8 CUTTER DECK CONTROLS Ref. Part Description 482624 Rod, Deck Lift Linkage 04020-28 Nut, Jam 1/2-20 LH Thread 481766 Rod End, 1/2-20 Female Thread 04050-10 Retaining Ring, 1/2” External “E” 482429 Slide, Deck Height Adjust 43487 Pin, Deck Lift 423463 Bracket, Cutting Height Adjustment 04009-02...

  • Page 46: Sheet Metal Components

    Section 8 SHEET METAL COMPONENTS 23 3 29 2 5 18 19 7 8 20 30 1 SC 2004 SMC...
  • Page 47 Section 8 SHEET METAL COMPONENTS Ref. Part Ref. Part Description Description 481559 Cap, Grease 461700 Main Frame Assembly w/decals 04021-20 Nut, Elastic Stop 1.0-14 04001-73 Bolt, Hex Head 5/16-18 x 3-3/4” 48668 Bearing Set ?????? Cushion, Back 482028-01 Plug, 1/4-28 04019-04 Nut, Serr.

  • Page 48: Drive System Components

    Section 8 DRIVE SYSTEM COMPONENTS STC 2003 DSC...
  • Page 49 Section 8 DRIVE SYSTEM COMPONENTS Ref. Part No. No. Description 04021-09 Nut, Elastic Stop 3/8-16 04019-04 Nut, Serrated Flange 3/8-16 482717 Spring, Pump Idler 43286 Spacer 04001-22 Bolt, Hex Head 3/8-16 x 2-3/4” 461603 Idler Arm Assy., Pump Drive 04063-14 Key, 5 x 5 x 25mm 482716 Belt, Transmission...

  • Page 50: Engine And Attaching Parts - Kohler

    Section 8 ENGINE AND ATTACHING PARTS SC 2004 EAPKA...
  • Page 51 Section 8 ENGINE AND ATTACHING PARTS Ref. Part Description 482900 Engine, Kohler 423770 Bumper, Rear 41031 Weight, Rear (Shield) 61A Only 04019-04 Nut, Serr. Flange 3/8-16 482510 Extension, Oil Drain 4” 04003-23 Bolt, Carr. 3/8-16 x 1” 04001-32 Bolt, Hex Head 3/8-16 x 1-1/4” 482907 Muffler 423572...

  • Page 52: Steering Components

    Section 8 STEERING COMPONENTS 29, 29A To Pump STC 2002 SSC...

  • Page 53: Steering Components

    Section 8 STEERING COMPONENTS Ref. Part No. No. Description 482340 Grip, Control Lever 461386 Handle Bar (Includes item 1) 04001-32 Bolt, Hex Head 3/8-16 x 1-1/4” 04030-04 Lock Washer, 3/8” 04041-07 Flatwasher, 3/8-.391 x .938 x .105 04040-15 Flatwasher, 5/16-.375 x .875 x .083 04060-01 Roll Pin, Spring 5/32 x 3/4”...

  • Page 54: Brake Components

    Section 8 BRAKE COMPONENTS 40 16 17 35 31 11 3 15 14 13 12 STC 2002 BSC...
  • Page 55 Section 8 BRAKE COMPONENTS Ref. Part No. No. Description 04019-04 Nut, Serr. Flange 3/8-16 48807 Spring 04001-08 Bolt, Hex Head 5/16-18 x 3/4” 04001-163 Bolt, Hex Head 1/2-13 x 3-3/4” 04001-52 Bolt, Hex Head 1/2-13 x 2-1/2” 04021-19 Nut, 1/2-13 Center Lock 482639 Wheel Motor Ross 04063-25...

  • Page 56: Fuel And Hydraulic System

    Section 8 FUEL AND HYDRAULIC SYSTEM 3 55 20 19 45 46 18 19 33 47 48 ENGINE 4 36 37 48 47 49 35 32 54 44 31 43 SC 2004 FHS...
  • Page 57 Section 8 FUEL AND HYDRAULIC SYSTEM Ref. Part Ref. Part No. No. Description No. No. Description 482643 Pump, BDP-10A-316 (L.H.) 48058 Fuel Hose, 1/4 ID 482644 Pump, BDP-10A-419 (R.H.) 423912 Bracket Fuel Valve 482266-01 Elbow, 90 Degree 9/16 O-Ring x 3/8 Hose 48059-01 Clamp, Fuel Hose 1/4 Hose ID 48572-02...

  • Page 58: Electrical System ( Kohler)

    Section 8 ELECTRICAL SYSTEM SC 2004 ESKA...
  • Page 59 Section 8 ELECTRICAL SYSTEM Ref. Part Description 48023 Hourmeter 48298 Fuse, 20 amp 48017-02 Key, Ignition 48017-04 Nut, Hex 5/8-32 48017-03 Lockwasher, 5/8” Internal 461660 Electric PTO Clutch GT3.5 48798 Switch, Ignition 481687 Switch, PTO 48788 Relay 04031-01 Lock Washer, #10 External Tooth 04020-01 Nut, Hex #10-32 481637...

  • Page 60: Hydraulic Pump (Bdp-10A)

    Section 8 HYDRAULIC PUMP ASSEMBLY PORT "A" SIDE PORT "B" SIDE...
  • Page 61 Section 8 HYDRAULIC PUMP ASSEMBLY Ref. Part Description HG 70516 Housing Kit HG 70573 End Cap Kit HG 50641 Straight Headless Pin HG 50969 Hex Flange Bolt, M8-1.25 x 60mm HG 51232 Housing O-Ring HG 2513027 Charge Pump Kit HG 50273 Gerotor Assembly HG 9004101-1340 O-Ring HG 50095...

  • Page 62: Replacement Decals

    Section 8 REPLACEMENT DECALS AND INFORMATION PLATES 48404 FORWARD Hea vy- Duty REVERSE Comm e rcial 482100 481971 WARNING INSTALL BELT COVER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL 481039 SC 2004 RDP1...

  • Page 63: Replacement Decals

    Section 8 REPLACEMENT DECALS AND INFORMATION PLATES Ref. Part Description 482285 Decal, Danger-Spining Blades 482286 Decal, Warning-Rotating Blades 481955 Decal, 61A 481425 Decal, Oil 48656 Decal, Patents 482100 Decal, Traction Control 481971 Decal, Heavy Duty Commercial 48404 Decal, Metalcraft - Made in USA 481039 Decal, Belt Cover 482560...

  • Page 64: Electrical Schematic (Kohler)

    ENGINE PLUG YELLOW SOLENOID "B+" BRAKE MAIN HARNESS INTERLOCK SWITCH L.H. NEUTRAL ORANGE SWITCH BLACK BLACK SEAT BROWN BLACK GROUND SWITCH MODULE DIODE PLUG CLUTCH STARTER STARTER SOLENOID ENGINE ADAPTER NEG POS R.H. NEUTRAL STWC Electrical Schematic HARNESS HOURMETER SWITCH...
  • Page 65 * Engines and electric starters are covered by the engine manufacturer’s warranty period. * Major drive system components are warranted for two (2) years by Scag Power Equipment. (Parts and labor 1st year; Parts only 2nd year) (Two year warranty exclude fittings, hoses, drive belts). The repair or replacement of the hydraulic pump or hydraulic motor will be at the option of Scag Power Equipment.
  • Page 66 Scag o afecten la operación, funcionamiento o durabilidad de éste. Scag Power Equipment se reserva el derecho de modificar o mejorar el diseño de cualquier cortacésped sin tener por ello obligación alguna de modificar cualquier cortacésped fabricado con anterioridad. Cualquier otra garantía implícita se limita a un período de garantía de dos (2) años o noventa (90) días en el caso de cortacéspedes destinados a alquiler.

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