Scag Power Equipment SFW36-16BV Operator's Manual
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Scag Power Equipment SFW36-16BV Operator's Manual

Scag Power Equipment SFW36-16BV Operator's Manual

Sfw walk-behind
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See also: Illustrated Parts Manual
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.
© 2008
Scag Power Equipment
Division of Metalcraft of Mayville, Inc.
OPERATOR'S
MANUAL
SFW
Walk-Behind
Model:
SFW36-16BV
SFW48-16BV
PART NO. 03253
PRINTED 12/2008
PRINTED IN USA

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Summary of Contents for Scag Power Equipment SFW36-16BV

  • 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. © 2008 Scag Power Equipment Division of Metalcraft of Mayville, Inc. OPERATOR’S MANUAL...
  • 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: SFW36-16Bv SFW48-16Bv Always use the entire serial number listed on the serial number tag when referring to this product.

  • Page 3: Table Of Contents

    Table of Contents SECTION 1 - GENERAL INFORMATION 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 2.1 INTRODUCTION ...3 2.2 SIGNAL WORDS ...3 2.3 BEFORE OPERATION CONSIDERATIONS ...3 2.4 OPERATION CONSIDERATIONS ...4 2.5 MAINTENANCE CONSIDERATIONS &...
  • Page 4 SECTION 6 - ADJUSTMENTS 6.1 DRIvE CONTROL ADJUSTMENTS ...19 6.2 THROTTLE CONTROL AND CHOkE ADJUSTMENTS ...19 6.3 BELT ADJUSTMENT ...19 6.4 BELT ALIGNMENT ...19 6.5 CUTTER DECk ADJUSTMENTS ...19 6.6 ELECTRIC CLUTCH ADJUSTMENT ...20 SECTION 7 - MAINTENANCE 7.1 MAINTENANCE CHART - RECOMMENDED SERvICE INTERvALS ...22 7.2 LUBRICATION ...23 7.3 ENGINE OIL ...24 7.4 ENGINE FUEL SYSTEM ...24...

  • Page 5: General Information

    All information is based upon product information available at the time of approval for printing. Scag Power Equipment reserves the right to make changes at any time without notice and without incurring any obligation.

  • Page 6: Symbols

    SYMBOLS SYMBOL DESCRIPTION Choke Parking Brake On/Start Off/Stop Falling Hazard Fast Continuously Variable - Linear Pinch Point 481039S Hour meter/Elapsed Operating Hours STT MODELS Seat must be installed under the seat hold down bracket during installation. Failure to secure the seat under the hold down bracket could result in serious injury or death in a roll over.

  • Page 7: Safety Information

    Section 2 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 the operation, transport, maintenance and storage of the equipment.

  • Page 8: Operation Considerations

    If the operator(s) or mechanic(s) cannot read English or Spanish, it is the owner's responsibility to explain this material to them. Contact your local Authorized Scag Dealer for a Spanish Decal Kit. DO NOT wear loose fitting clothing. Loose clothing, jewelry or long hair could get tangled in moving parts.

  • Page 9: Maintenance Considerations & Storage

    Section 2 WARNING DO NOT use your hand to dislodge the clogged discharge chute. Use a stick or other device to remove clogged material after the engine has stopped running and the blades have stopped turning. Be alert for holes, rocks, roots and other hidden hazards in the terrain.

  • Page 10: Using A Spark Arrestor

    Keep all nuts, bolts and screws tight, to ensure the machine is in safe working condition. Check blade mounting bolts frequently to be sure they are tight. Do not change the engine governor settings or overspeed the engine. See the engine operator's manual for information on engine settings.

  • Page 11: Safety And Instructional Decals

    Section 2 SAFETY AND INSTRUCTIONAL DECALS WARNING DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING kIT, OR ENTIRE GRASS CATCHER INSTALLED WARNING ROTATING BLADES AND BELTS * 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...

  • Page 12: Specifications

    General Type ...Heavy Duty Industrial/Commercial Gasoline Brand ... Briggs & Statton Horsepower: (Scag Model SFW36-16BV) ... 16 HP (Spec.#305776929002) (Scag Model SFW48-16BV ... 16 HP (Spec.# 305776929002) Cylinders ... 2 with Cast-Iron Sleeves Governor ...Mechanical Type with Variable Speed Control Set At 3600 RPM Idle Speed: Briggs &...

  • Page 13: Weights And Dimensions

    Section 3 Spindle Pulleys ...Split Steel Cutter Deck Belts ...B-section with Kevlar Cord. Self-Adjusting, Self-Tightening Electric Clutch Type ...Ogura Heavy Duty PTO Clutch Brake WEIGHTS AND DIMENSIONS Length... 74" ...74" Tracking Width ... 35" ...35" Overall Width w/chute down ... 48" ...60.5" Overall Width w/chute up ...36.5"...

  • Page 14: Operating Instructions

    OPERATING INSTRUCTIONS CAUTION Do not attempt to operate this mower unless you have read this manual. Learn the location and purpose of all controls and instruments before you operate this mower. CONTROLS AND INSTRUMENT IDENTIFICATION Before operating the mower, familiarize yourself with all mower and engine controls.

  • Page 15: Safety Interlock System

    Section 4 Left Steering / Brake Control (Figure 4-1). to control the mower's left wheel when traveling forward or reverse. Pull upward to apply brake. Right Steering / Brake Control (Figure 4-1). to control the mower's right wheel when traveling forward or reverse.

  • Page 16: Ground Travel And Steering

    GROUND TRAvEL AND STEERING - IMPORTANT - If you are not familiar with the operation of a walk behind mower with a transmission, the steering and ground speed operations should be learned and practiced in an open area, away from buildings, fences, or obstructions.

  • Page 17: Engaging The Deck Drive (Cutter Blades)

    Section 4 ENGAGING THE DECk DRIvE (CUTTER BLADES) Set the throttle at about 3/4 speed. Do not attempt to engage the deck drive at high speed as this shortens the electric clutch life — use only moderate engine speed when engaging the deck drive. Engage the deck drive by pulling out on the yellow switch, located on the instrument panel, to the engage position.

  • Page 18: After Operation

    AFTER OPERATION Wash the entire mower after each use. Do not use high pressure spray or direct the spray onto electrical components. - IMPORTANT - Do not wash a hot or running engine. Cold water will damage the engine. Use compressed air to clean the engine if it is hot.

  • Page 19: Adjusting Cutting Height

    Section 4 4.13 ADJUSTING CUTTING HEIGHT The mower deck can be adjusted from a height of 1-1/2 inches to 4-1/2 inches at 1/4-inch intervals. To adjust the cutting height: WARNING DO NOT adjust the cutting height with the mower blades rotating. Disengage the power to the cutter blades and then adjust cutting height.

  • Page 20: Troubleshooting Cutting Conditions

    TROUBLESHOOTING CUTTING CONDITIONS CONDITION STRINGERS - OCCASIONAL Low engine RPM BLADES OF UNCUT GRASS Ground speed too fast Wet grass Dull blades, incorrect sharpening Deck plugged, grass accumulation Width of Deck Belts slipping SGB020 STREAkING - STRIPS OF Dull, worn blades UNCUT GRASS IN CUTTING PATH Incorrect blade sharpening...
  • Page 21 Section 5 TROUBLESHOOTING CUTTING CONDITIONS (CONT'D) CONDITION U N E v E N C U T O N F L AT GROUND - WAvY HIGH-LOW APPEARANCE, SCALLOPED CUT, OR ROUGH CONTOUR Width of Deck SGB020 UNEvEN CUT ON UNEvEN GROUND - WAvY APPEARANCE, HIGH-LOW SCALLOPED CUT, OR ROUGH CONTOUR Width of Deck...
  • Page 22 TROUBLESHOOTING CUTTING CONDITIONS (CONT'D) CONDITION SCALPING - BLADES HITTING DIRT OR CUTTING vERY CLOSE TO THE GROUND Width of Deck SGB022 STEP CUT - RIDGE IN CENTER OF CUTTING PATH Width of Deck SGB024 SLOPE CUT - SLOPING RIDGES ACROSS WIDTH OF CUTTING PATH Width of Deck SGB025...

  • Page 23: Adjustments

    Section 6 DRIvE CONTROL ADJUSTMENTS Adjust the steering control rods so that there is approximately 3/4" clearance from the bottom of the rod to the bottom of the neutral latch slot when in the drive position. See Figure 6-1. Adjust the steering brake rods so that the brakes do not apply until the steering levers are pulled tight to the handles.

  • Page 24: Electric Clutch Adjustment

    On the front of the cutter deck locate the cutter deck adjustment slots. See Figure 6-2. ADJUSTMENT SLOT ADJUSTMENT SLOT Figure 6-2. Cutter Deck Adjustment Slots Loosen the two (2) elastic stop nuts. Adjust the cutter deck up or down in the adjustment slot to adjust until the distance from the top of the cutter deck to the floor is the same as the measurement on both sides of the machine.
  • Page 25 Section 6 INSERT 0.015 FEELER GAUGE HERE Figure 6-4. Clutch Air Gap Adjustment Tighten or loosen the adjusting bolt as needed to acheive the 0.015 inch airgap. See Figure 6-5. Perform this operation at all three inspection windows. ADJUSTMENT NUTS ADJUSTMENT NUTS Figure 6-5.

  • Page 26: Maintenance

    MAINTENANCE CHART - RECOMMENDED SERvICE INTERvALS HOURS BREAk-IN 100 200 500 (FIRST 10) * Perform these maintenance procedures more frequently under extreme dusty or dirty conditions MAINTENANCE PROCEDURE Check all hardware for tightness C h e c k a l l b e l t s f o r p r o p e r alignment Check engine oil level *Clean mower...

  • Page 27: Lubrication

    Section 7 MAINTENANCE CHART - RECOMMENDED SERvICE INTERvALS (CONT'D) HOURS BREAk-IN (FIRST 10) LUBRICATION GREASE FITTING LUBRICATION CHART LOCATION Caster Wheel Bearings Transmission Couplers PROCEDURE Check hardware for tightness Change engine oil filter Replace engine fuel filter Adjust electric PTO clutch LUBRICATION INTERvAL 100 Hours/Monthly Chassis Grease...

  • Page 28: Engine Oil

    ENGINE OIL ENGINE OIL FILLER ENGINE OIL FILTER Figure 7-1. Briggs & Stratton Engine Oil Fill/Dipstick, Filter and Drain Locations A. CHECkING ENGINE CRANkCASE OIL LEvEL The engine oil level should be checked after every 8 hours of operation or daily as instructed in the Engine Operator’s Manual furnished with this mower.

  • Page 29: Engine Air Cleaner

    Section 7 If fuel is spilled on clothing, change clothing immediately and wash affected skin. Replace gas cap and tighten securely. B. REPLACING IN-LINE FUEL FILTER ELEMENTS The engine fuel filter should be replaced after every 500 hours of operation or annually, whichever occurs first. See Figure 7-2.

  • Page 30: Tires

    sharpened. Remove the blades for sharpening. See "Blade Replacement." - NOTE - Keep the blades sharp. Cutting with dull blades not only yields a poor mowing job, but slows the cutting speed of the mower and causes extra wear on the engine and the blade drive by pulling hard.

  • Page 31: Illustrated Parts List

    Section 8 ILLUSTRATED PARTS LIST 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: • Mulch Plate (p/n 920G, 9298) •...

  • Page 32: 36" Cutter Deck

    36" CUTTER DECk Section 8...
  • Page 33 Section 8 Ref. Part No. Description 462150 Cutter Deck Weldment w/Decals 04112-06 Nut, 3/4-16 Spiral Lock 04063-01 Key, 1/4 x 1/4 x 1-1/4" 04021-09 Nut, Elastic Stop 3/8-16 04043-04 Flatwasher, 3/8-.391 x .938 x .105 HD 424615 Bracket, Belt Guide 424367 Dust Shield 483324...

  • Page 34: 48" Cutter Deck

    48" CUTTER DECk Section 8 22 5...
  • Page 35 Section 8 Ref. Part No. Description 462149 Cutter Deck Weldment w/Decals 04112-06 Nut, 3/4-16 Spiral Lock 04063-01 Key, 1/4 x 1/4 x 1-1/4" 04021-09 Nut, Elastic Stop 3/8-16 04043-04 Flatwasher, 3/8-.391 x .938 x .105 HD 424615 Bracket, Belt Guide 424367 Dust Shield 483323...

  • Page 36: Cutter Deck Controls

    CUTTER DECk CONTROLS Section 8...
  • Page 37 Section 8 Ref. Part No. Description 462183 Belt Cover, SFW w/Decals 462181 Frame Weldment w/Decals 04009-13 Bolt, Shoulder 1/2 x 1-1/2" 425023 Pusharm 43041 Spacer 04009-10 Bolt, Shoulder 1/2 x 2-3/4" 04019-04 Nut, Serrated Flange 3/8-16 04021-09 Nut, Elastic Stop 3/8-16 04043-04 Flatwasher, 3/8-.391 x .938 x .105 HD 425076...

  • Page 38: Handle Assembly

    HANDLE ASSEMBLY Section 8 9 10 SFW 2009 HA...
  • Page 39 Section 8 Ref. Part No. Description 462187 Handle Weldment w/Decals 452039 Operator Presence Handle, LH 452040 Operator Presence Handle, RH 483941 Spring, Operator Presence 04001-13 Bolt, Hex Head 5/16-18 x 2-3/4" 04001-53 Bolt, Hex Head 5/16-18 x 2-1/2" 483161 Plug, Handle Bar 04032-01 Washer, Curved Spring 04021-10...

  • Page 40: Engine Deck

    ENGINE DECk Section 8 SFW2009ED...
  • Page 41 Section 8 Ref. Part No. Description 483796 Engine, 16HP Briggs & Stratton 483822 Transmission, 4-Speed 04017-16 Bolt, Serrated Flange 5/16-18 x 3/4" 48231 Switch, Neutral Interlock 48122-01 Fiber Washer, Thin 48122-02 Fiber Washer, Thick 48114-05 Grease Fitting, Straight 1/4-28 481581 Coupler, Jackshaft 481582 Jackshaft...

  • Page 42: Electrical System And Throttle Control

    Section 8 ELECTRICAL SYSTEM AND THROTTLE CONTROL...
  • Page 43 Section 8 ELECTRICAL SYSTEM AND THROTTLE CONTROL Ref. No. Part No. Description 483957 Switch, PTO 10 Amp 48609 Keyswitch 462069 Key Chain w/Keys 483609 Key w/Shroud 48717 Switch 483904 Throttle Cable 04010-01 Screw, #10-32 x 1/2" 04019-01 Nut, #10-32 48028-05 Cable Tie 483872 Wire Harness, Handle Bar...

  • Page 44: Replacement Decals And Information Plates

    REPLACEMENT DECALS AND INFORMATION PLATES WARNING INSTALL BELT COvER BEFORE OPERATING MACHINE READ OPERATOR'S MANUAL WARNING ROTATING BLADES AND BELTS * 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...
  • Page 45 Section 8 REPLACEMENT DECALS AND INFORMATION PLATES Ref. Part No. Description 483402 Decal, Belt Cover 483405 Decal, Discharge Chute 483505 Decal, Spinning Blades 483406 Decal, Warning-Rotating Blades 483404 Decal, Sulky Attachment 483407 Decal, Danger-Spinning Blades 483894 Decal, Cutting Height LH 483895 Decal, Cutting Height RH 48404...

  • Page 46: Sfw Electrical Schematic

    SFW ELECTRICAL SCHEMATIC Operator BLK W/RED STRIPE Presence BLK W/RED STRIPE Switch MOWER ENGAGE WHITE TO ENGINE DECK WIRE HARNESS TO HANDLE BAR WIRE HARNESS ENGINE CHARGE ENGINE MAG KILL WHITE Operator Presence Switch BLACK WHITE BLACK BLACK YELLOW YELLOW BLUE WHITE BLACK...

  • Page 47: Limited Warranty - Sfw

    Cutter decks are warranted against cracking for a period of two (2) years (Parts and labor) The repair or replacement of the cutter deck will be at the option of Scag Power Equipment. We reserve the right to request components for evalu- ation.
  • Page 48 © 2008 Scag Power Equipment Division of Metalcraft of Mayville, Inc.

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Sfw48-16bv

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