Scag Power Equipment SWZT-36H-14FS Operator's Manual

Scag Power Equipment SWZT-36H-14FS Operator's Manual

Walk-behind
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Congratulations on owning a Scag mower! This manual contains the operating
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 efficiency. The specific models that
this book covers are listed on the inside cover. Before operating your machine,
please read all the information enclosed.
© 2023
Scag Power Equipment
Division of Metalcraft of Mayville, Inc.
OPERATOR'S
MANUAL
SWZT
Walk-Behind
Model:
SWZT-36H-14FS
SWZT-48H-15FSE
SWZT-48H-20CX
SWZT-52H-18FSE
SWZT-52H-20CX
SWZT-61H-22FSE
SWZT-61H-25CX
PART NO. 03543
PRINTED 9/2023
PRINTED IN USA

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Summary of Contents for Scag Power Equipment SWZT-36H-14FS

  • Page 1 The specific models that this book covers are listed on the inside cover. Before operating your machine, please read all the information enclosed. © 2023 PART NO. 03543 Scag Power Equipment PRINTED 9/2023 Division of Metalcraft of Mayville, Inc. PRINTED IN USA...
  • Page 2 CONCERN, PRUDENCE, AND PROPER TRAINING OF THE PERSONNEL INVOLVED IN THE OPERATION, TRANSPORT, MAINTENANCE, AND STORAGE OF THE EQUIPMENT. This manual covers the operating instructions and illustrated parts list for: SWZT-36H-14FS with a serial number of W6800001 to W6899999 SWZT-48H-15FSE...
  • Page 3: Table Of Contents

    Table of Contents Table of Contents SECTION 1 - GENERAL INFORMATION ...................1 1.1 INTRODUCTION ............................1 1.2 DIRECTION REFERENCE .........................1 1.3 SERVICING THE ENGINE AND DRIVE TRAIN COMPONENTS ............1 1.4 SYMBOLS ..............................2 SECTION 2 - SAFETY INFORMATION ..................3 2.1 INTRODUCTION ............................3 2.2 SIGNAL WORDS ............................3 2.3 BEFORE OPERATION CONSIDERATIONS ....................3 2.4 TESTING THE SAFETY INTERLOCK SYSTEM ..................4...
  • Page 4 Table of Contents SECTION 5 - TROUBLESHOOTING CUTTING CONDITIONS ..........17 SECTION 6 - ADJUSTMENTS ....................20 6.1 PARKING BRAKE ADJUSTMENT ......................20 6.2 NEUTRAL ADJUSTMENT ........................20 6.3 NEUTRAL LATCH ADJUSTMENT ......................21 6.4 TRACKING ADJUSTMENT ........................21 6.5 THROTTLE CONTROL AND CHOKE ADJUSTMENTS ............... 22 6.6 BELT ADJUSTMENT ..........................22 6.7 BELT ALIGNMENT ...........................22 6.8 CUTTER DECK ADJUSTMENTS ......................22...
  • Page 5: Section 1 - General Information

    Your mower was built to the highest standards in the Attachments and accessories manufactured by industry. However, the prolonged life and maximum companies other than Scag Power Equipment are not efficiency of your mower depends on you following the approved for use on this machine. See Section 8-1. Be...
  • Page 6: Symbols

    Section 1 1.4 SYMBOLS SYMBOL DESCRIPTION SYMBOL DESCRIPTION Choke Transmission Parking Brake Spinning Blade 48071S On/Start Spring Tension on Idler Off/Stop Falling Hazard Thrown Object Hazard Fast Slow Continuously Variable - Linear Cutting Element - Basic Symbol Pinch Point Cutting Element - Engage 481039S Hour meter/Elapsed Operating Hours Cutting Element - Disengage...
  • Page 7: Section 2 - Safety Information

    Section 2 SAFETY INFORMATION 2.1 INTRODUCTION SIGNAL WORD: It is a distinctive word found on the safety decals on the Your mower is only as safe as the operator. Carelessness machine and throughout this manual that alerts the viewer or operator error may result in serious bodily injury or death. to the existence and relative degree of the hazard.
  • Page 8: Testing The Safety Interlock System

    Authorized Scag Power Equipment Dealer immediately to have the safety interlock system repaired. 11. Fuel is flammable; handle it with care. Fill the fuel tank outdoors.
  • Page 9: Operation Considerations

    Section 2 2. Place the steering control levers in the neutral lock 3. To prevent tipping or loss of control, start and stop position, move the speed control lever out of the smoothly, avoid unnecessary turns and travel at neutral lock position, engage the parking brake, reduced speed.
  • Page 10: Maintenance Considerations And Storage

    Section 2 15. Disengage power to the attachments when 21. Tie the mower down securely using straps, chains, transporting or when not in use. cable, or ropes. Both front and rear straps must be directed down and outward from machine. 16.
  • Page 11: Using A Spark Arrestor

    Section 2 10. Keep all parts in good working condition. Replace all worn or damaged decals. 11. Use jack stands to support components when required. 12. Carefully release pressure from components with stored energy. WARNING Hydraulic fluid is under high pressure and can penetrate skin causing injury.
  • Page 12: Spark Ignition System

    Section 2 2.8 SPARK IGNITION SYSTEM WARNING WARNING INSTALL BELT COVER BEFORE DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING OPERATING MACHINE KIT, OR ENTIRE GRASS CATCHER INSTALLED READ OPERATOR'S MANUAL 483405 483402 483405 WARNING SPINNING BLADES ROTATING BLADES AND BELTS KEEP CLEAR * Keep hands, feet &...
  • Page 13: Section 3 - Specifications

    General Type ....................Heavy Duty Industrial/Commercial Gasoline Brand ..................................Kawasaki Engine Model: (Scag Model SWZT-36H-14FS) ..................Kawasaki Model # FS481V (Scag Model SWZT-48H-15FSE) ..................Kawasaki Model # FS541V (Scag Model SWZT-48H-20CX) ..................Briggs & Stratton Model # (Scag Model SWZT-52H-18FSE) ..................Kawasaki Model # FS600V (Scag Model SWZT-52H-20CX) ..................
  • Page 14: Cutter Deck

    Section 3 Travel Speed: Forward ..............................0 up to 7 MPH Reverse ..............................0 up to 3 MPH -NOTE- The machine will travel at 7 mph for transport purposes. For best cutting performance the forward travel speed should be adjusted depending upon the cutting conditions. 3.4 CUTTER DECK Type ................................
  • Page 15: Section 4 - Operating Instructions

    Section 4 OPERATING INSTRUCTIONS 2. Mower Deck Switch (Figure 4-1). Use to engage WARNING and disengage the mower drive system. Pulling up on the switch will engage the deck drive. Pushing down on the switch will disengage the deck drive. Do not attempt to operate this mower unless you 3.
  • Page 16: Safety Interlock System

    If the safety interlock system does not operate as described below, contact your local 9. Operator Presence Control (Figure 4-1). The Authorized Scag Power Equipment Dealer immediately to operator presence control levers must be depressed have the safety interlock system repaired.
  • Page 17: Initial Run-In Procedures

    Section 4 4.4 INITIAL RUN-IN PROCEDURES 4.6 GROUND TRAVEL AND STEERING FIRST DAY OF USE OR APPROXIMATELY 20 HOURS - IMPORTANT - If you are not familiar with the operation of a walk 1. Check all belts for proper alignment and wear at 2, 4 behind mower with a hydrostatic transmission, the and 8 hours.
  • Page 18: Engaging The Deck Drive (Cutter Blades)

    Section 4 REVERSE TRAVEL CAUTION Disengage power to the mower before backing up. Do not mow in reverse unless absolutely PULL UP TO ENGAGE necessary and then only after observation of the entire area behind the mower. PUSH DOWN TO DISENGAGE 390S0138 CAUTION Figure 4-2.
  • Page 19: Parking The Mower

    Section 4 4.9 PARKING THE MOWER 4.11 REMOVING CLOGGED MATERIAL 1. Park the machine on a flat, level surface only. Do not park the machine on an incline. DANGER 2. Disengage the cutter blades. 3. Shift the speed control lever into the neutral position, ROTATING BLADES lock the neutral latches and apply the parking brake.
  • Page 20: Recommendations For Mowing

    Section 4 4.13 RECOMMENDATIONS FOR MOWING 1. Do not mow with dull blades. A dull blade will tear grass, resulting in poor lawn appearance and reduced mowing power. WARNING DO NOT operate without Discharge Chute, Mulching Kit, or entire Grass Catcher properly installed.
  • Page 21: Section 5 - Troubleshooting Cutting Conditions

    Section 5 TROUBLESHOOTING CUTTING CONDITIONS CONDITION CAUSE CURE 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 22 Section 5 TROUBLESHOOTING CUTTING CONDITIONS (CONT'D) CONDITION CAUSE CURE U N E V E N C U T O N F L AT Lift worn from blade Replace blade GROUND - WAVY HIGH-LOW APPEARANCE, SCALLOPED Blade upside down Mount with cutting edge toward ground CUT, OR ROUGH CONTOUR Deck plugged, grass accumulation Clean underside of deck...
  • Page 23 Section 5 TROUBLESHOOTING CUTTING CONDITIONS (CONT'D) CONDITION CAUSE CURE SCALPING - BLADES HITTING Low tire pressures Check and adjust pressures D I R T O R C U T T I N G V E RY CLOSE TO THE GROUND Ground speed too fast Slow speed to adjust for conditions May need to reduce ground speed, raise...
  • Page 24: Section 6 - Adjustments

    Section 6 ADJUSTMENTS 6.1 PARKING BRAKE ADJUSTMENT - NOTE - If this procedure does not achieve proper brake adjustment, please contact your authorized Scag WARNING dealer. 6.2 NEUTRAL ADJUSTMENT Do not operate the mower if the parking brake is not operable. Possible severe injury could result. -NOTE- Neutral has been set by your Scag dealer at the time of set up and normally does not need to be...
  • Page 25: Neutral Latch Adjustment

    Section 6 6.3 NEUTRAL LATCH ADJUSTMENT -NOTE- This adjustment is made to allow the steering control levers to be moved out of the neutral latch without engaging reverse. 1. Raise the drive wheels off the ground and block the CONTACT HERE caster wheels to prevent the machine from moving.
  • Page 26: Throttle Control And Choke Adjustments

    Section 6 3. If the machine pulls to one side, stop the mower WARNING by placing the steering control levers in the neutral position. Using a wrench, turn the tracking adjustment nut on the slower side counter clockwise If the pump drive belt fails, steering control will be until the machine tracks straight.
  • Page 27 Section 6 2. Move bolts on the front hanger chains up or down in the slots until the cutter deck pitch is equal between both sides. Hold the cutter deck in position and tighten the elastic stop nuts. ADJUST HERE Figure 6-5.
  • Page 28: Electric Clutch Adjustment

    Section 6 CUTTER DECK HEIGHT 6.9 ELECTRIC CLUTCH ADJUSTMENT The cutter deck height adjustment is made to ensure The electric clutch serves two functions in the operation of that the cutter deck is cutting at the height indicated on the mower. In addition to starting and stopping the power the cutting height index gauge.
  • Page 29 Section 6 ADJUSTMENT NUTS ADJUSTMENT NUTS Figure 6-11. Clutch Air Gap Adjustment This adjustment should be done every 500 hours of operation or annually, whichever comes first. In cases where the machine is heavily used, airgap settings should be checked more often. If the air gap is too narrow, the clutch armature may drag when disengaged, resulting in premature failure.
  • Page 30: Section 7 - Maintenance

    Section 7 MAINTENANCE 7.10 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS HOURS PROCEDURE COMMENTS BREAK-IN 100 200 400 (FIRST 10) Check all hardware for tightness Check all belts for proper alignment See paragraph 6.7 Check all hydraulic fittings and See paragraph 2.6 hoses for leaks Check engine oil level See paragraph 7.4...
  • Page 31: Lubrication

    Section 7 HOURS PROCEDURE COMMENTS BREAK-IN (FIRST 10) Check hardware for tightness Change engine oil filter See paragraph 7.4 Replace engine fuel filter See paragraph 7.5 Grease caster wheel pivot See paragraph 7.2 shafts Drain hydraulic system, replace Use SAE 20W50 Motor Oil. hydraulic oil and filters See paragraph 7.3 Adjust electric PTO clutch...
  • Page 32: Hydraulic System

    Section 7 7.12 HYDRAULIC SYSTEM 3. Place a suitable container under the hydraulic oil filters. Remove the fill cap from the expansion reservoir. A. CHANGING HYDRAULIC OIL 4. Remove the hydraulic filters from both axles and allow the fluid to drain into the container. Properly The hydraulic system oil and filter should be changed after discard the oil when the system has drained the first 75-100 hours of machine operation and every 400...
  • Page 33: Engine Oil

    Section 7 14. Move the speed control lever to the neutral position, engage the neutral latch for both sides and engage FILL PORT PLUG the parking brake. Move the dump valve control levers to the "drive" position. See Figure 7-4. 15.
  • Page 34: Engine Fuel System

    Section 7 7.14 ENGINE FUEL SYSTEM To avoid personal injury or property damage, use extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive. DANGER 1. Extinguish all cigarettes, cigars, pipes and other sources of ignition. 2.
  • Page 35: Engine Air Cleaner

    Section 7 7.15 ENGINE AIR CLEANER WARNING A. CLEANING AND/OR REPLACING AIR CLEANER ELEMENT Electric storage battery fluid contains sulfuric acid which is POISON and can cause SEVERE For any air cleaner, the operating environment dictates CHEMICAL BURNS. Avoid contact of fluid with the air cleaner service periods.
  • Page 36: Cutter Blades

    Section 7 WARNING WARNING Do not attempt to straighten a bent blade, and BATTERIES PRODUCE EXPLOSIVE GASES. never weld a broken or cracked blade. Always Charge the battery in a well ventilated space so replace it with a new blade to assure safety. gases produced while charging can dissipate.
  • Page 37: Tires

    Section 7 2. Check the balance of the blade. If the blades are out of balance, vibration and premature wear can occur. The cutter blades should be balanced to 1-1/2 oz-in. See your authorized Scag dealer for blade balancing or special tools, if you choose to balance your own blades.
  • Page 38 Section 7 NOTES...
  • Page 39: Section 8 - Illustrated Parts List

    Section 8 ILLUSTRATED PARTS LIST 8.1 SCAG APPROVED ATTACHMENTS AND ACCESSORIES. Attachments and accessories manufactured by companies other than Scag Power Equipment are not approved for use on this machine. Scag approved attachments and accessories: Accessories Accessories Grass Catchers Scag Premium Lubricants...
  • Page 40: Cutter Deck

    Section 8 36H CUTTER DECK 2018 SWZT 36CD...
  • Page 41 Section 8 36H CUTTER DECK Ref. Ref. Part No. Description Part No. Description 04117-02 Nut, Elastic Flange 3/8-16 04021-09 Nut, Elastic Stop 3/8-16 04001-21 Bolt, Hex Head 3/8-16 x 1-3/4" 424615 Bracket, Belt Guide 425959 Pusharm 04043-04 Flatwasher, 3/8-.391 x .938 x .105 04009-10 Bolt, Shoulder 1/2 x 3/8-16 x 2-3/4"...
  • Page 42: Cutter Deck

    Section 8 48H CUTTER DECK 2018 SWZT CD...
  • Page 43 Section 8 48H CUTTER DECK Ref. Ref. Part No. Description Part No. Description 04001-77 Bolt, Hex Head 3/8-16 x 3-1/2" 04021-09 Nut, Elastic Stop 3/8-16 04019-04 Nut, Serrated Flange 3/8-16 424615 Bracket, Belt Guide 04001-175 Bolt, Hex Head 5/16-18 x 1-1/2" Gr.8 04112-06 Nut, 3/4-16 Spiral Lock 482877...
  • Page 44: Cutter Deck

    Section 8 52H CUTTER DECK 2018 SWZT 52 CD...
  • Page 45 Section 8 52H CUTTER DECK Ref. Ref. Part No. Description Part No. Description 482878 Cutter Blade, 18" 04021-09 Nut, Elastic Stop 3/8-16 04043-06 Flatwasher, 5/8-.688 x 1.75 x .134 HD 424615 Bracket, Belt Guide 04030-07 Lockwasher, 1/2 Spring 04112-06 Nut, 3/4-16 Spiral Lock 04001-121 Bolt, Hex Head 5/8-11 x 1-1/2"...
  • Page 46: Cutter Deck

    Section 8 61H CUTTER DECK 2018 SWZT61...
  • Page 47 Section 8 61H CUTTER DECK Ref. Ref. Part No. Description Part No. Description 462980 Cutter Deck w/Decals, SWZT-61H 461950 Spindle Assembly 483304 Debris Shield 484026 Pulley, 6.32" Dia. 483303 Bearing 485511 Belt, Cutter Deck - SWZT-61H 43693 Spacer 04112-06 Nut, Spiral Lock 3/4-16 462014 Spindle Housing 04063-01...
  • Page 48: Cutter Deck Controls

    Section 8 CUTTER DECK CONTROLS...
  • Page 49 Section 8 CUTTER DECK CONTROLS Ref. No. Part No. Description 481625-01 Knob W/Stud, 3/8-16 x 1-1/4" 04029-04 Wing Nut, 3/8" Plastic Small 462683 Belt Cover w/Decals 462788 Belt Cover w/Decals - SWZT61H 462522 Deck Bellcrank Assy. (Incl. item #8) 462792 Deck Bellcrank Assy.
  • Page 50: Engine Deck & Hydraulic System

    Section 8 ENGINE DECK & HYDRAULIC SYSTEM 2023 SWZT ED&HS...
  • Page 51 Section 8 ENGINE DECK & HYDRAULIC SYSTEM Ref. Ref. Part No. Description Part No. Description *485014 Engine, Kawasaki FS481V 04001-170 Bolt, Hex Head 3/8-16 x 2-1/2" *486754 Engine, Kawasaki FS541V (Electric Start) 04043-04 Flatwasher, 3/8-.391 x .938 x .105 Hardened 04021-09 Nut, Elastic Stop 3/8-16 *487322...
  • Page 52: Steering Controls

    Section 8 STEERING CONTROLS...
  • Page 53: Steering Controls

    Section 8 STEERING CONTROLS Ref. Ref. Part No. Description Part No. Description 04021-08 Nut, Elastic Stop 1/4-20 04021-09 Nut, Elastic Stop 3/8-16 04040-15 Flatwasher, 5/16-.375 x .875 x .083 484589 Linkage, Speed Control 425948 Bracket, Neutral Switch (Manual Start) 43674 Spacer 426568 Bracket, Neutral Switch (Electric Start Only)
  • Page 54: Brake Components

    Section 8 BRAKE COMPONENTS...
  • Page 55 Section 8 BRAKE COMPONENTS Ref. No. Part No. Description 04069-01 Pin, Rue Cotter 3/8" Dia. 462515 Brake Lever w/Grip 481548 Grip, Brake Lever 04062-02 Hair Pin, .080 x 1.19" 44187 Rod, Brake Linkage 04017-16 Cpscrw, 5/16-18 x 3/4"Serrated Flange HH 04061-02 Cotter Pin, 3/32 x 3/4"...
  • Page 56: Electrical System And Throttle Control - Manual Start

    Section 8 ELECTRICAL SYSTEM AND THROTTLE CONTROL - MANUAL START...
  • Page 57 Section 8 ELECTRICAL SYSTEM AND THROTTLE CONTROL - MANUAL START Ref. No. Part No. Description 462069 Key Assembly w/Fob 483609 Key w/Shroud 48017-04 Nut, 5/8-32 Special 48017-03 Lockwasher, 5/8" Internal Tooth 462576 Instrument Panel w/Decal 04003-43 Bolt, Carriage #10-24 x 1/2" 04003-12 Bolt, Carriage 5/16-18 x 3/4"...
  • Page 58: Electrical System And Throttle Control - Electric Start

    Section 8 ELECTRICAL SYSTEM AND THROTTLE CONTROL - ELECTRIC START...
  • Page 59 Section 8 ELECTRICAL SYSTEM AND THROTTLE CONTROL - ELECTRIC START Ref. No. Part No. Description 462069 Key Assembly w/Fob 483609 Key w/Shroud 48017-04 Nut, 5/8-32 Special 48017-03 Lockwasher, 5/8" Internal Tooth 462684 Instrument Panel w/Decal 04003-43 Bolt, Carriage #10-24 x 1/2" 04003-12 Bolt, Carriage 5/16-18 x 3/4"...
  • Page 60: Swzt Fuel System

    Section 8 SWZT FUEL SYSTEM Tank Purge To Fuel Pump To Engine Purge Port...
  • Page 61 Section 8 SWZT FUEL SYSTEM Ref. No. Part No. Description 484286 Fuel Cap w/ Tether 484297 Fuel Cap w/ Tether - California Models Only (not shown) 484243 Fuel Gauge Assembly (incl. #3) 484242 Seal, Fuel Gauge 463282 Fuel Tank Assembly (incl. #2, 3, 5, 6, 17, 18) 482571 Bushing, .56 Dia.
  • Page 62: Zt-2800 Hydraulic Axle Assembly

    Section 8 ZT-2800 HYDRAULIC AXLE ASSEMBLY 11 12...
  • Page 63 Section 8 ZT-2800 HYDRAULIC AXLE ASSEMBLY Ref. Ref. Part No. Description Part No. Description HG71594* Kit, RTN Assembly * HG53246 Bolt, Hex Head 1/4-20 x 1-1/8" HG71589** Kit, RTN Assembly ** HG54730- Plug, 9/16-18 484600 Spring, RTN HG73096* Kit, Side Cover, * HG51842* Arm, Control * HG73095**...
  • Page 64: Replacement Decals And Information Plates

    Section 8 REPLACEMENT DECALS AND INFORMATION PLATES WARNING FAST INSTALL BELT COVER FAST BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL THROTTLE SPEED CONTROL SLOW WARNING MOWER DECK SLOW BEFORE OPERATING *Read operator's manual N E U T R A L *Make sure guards, shields &...
  • Page 65 Decal, Sulky Attachment 483727 Decal, Scag Logo 483900 Decal, Warning Spark Arrestor 484661 Decal, Height of Cut 483405 Decal, Warning 485627 Decal, SWZT Replacement Parts 485525 Decal, Belt Routing 486136 Decal, Scag Power Equipment (Fuel Tank) 461986 Spanish Decal Kit (not shown)
  • Page 66: Swzt Electrical Schematic - Manual Start

    Section 8 SWZT ELECTRICAL SCHEMATIC - MANUAL START (shown with the Key Off, PTO Off, Parking Brake Applied, Speed Control in Neutral, OPC Disengaged) Position PTO Switch Legend ON (UP) SWITCH DOWN (OFF) SWITCH L.H. OPERATOR BLACK PRESENCE BLACK SWITCH WHITE WHITE BLACK W/RED STRIPE...
  • Page 67: Swzt Electrical Schematic - Electric Start

    Section 8 SWZT ELECTRICAL SCHEMATIC - ELECTRIC START (shown with the Key Off, PTO Off, Parking Brake Applied, Speed Control in Neutral, OPC Disengaged) SWITCH Position PTO Switch Legend ON (UP) DOWN (OFF) Position Key Switch Legend G + M + A B + L + A START B + L + S...
  • Page 68: Limited Warranty

    Cutter decks are warranted against cracking for a period of three (3) years. (parts and labor 1st and 2nd year; parts only 3rd year.) The repair or replacement of the cutter deck will be at the option of Scag Power Equipment. We reserve the right to request compo- nents for evaluation.
  • Page 69 © 2023 Scag Power Equipment Division of Metalcraft of Mayville, Inc.

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