Walker S18 Operator's Manual
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Walker S18 Operator's Manual

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Operator's Manual
Safety, Assembly, Operating, and Maintenance Instructions
Please Read and Save These Instructions
For Safety, Read All Safety and Operation
Beginning S/N: 158891
Instructions Prior to Operating Machine
P/N 5000-53

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Summary of Contents for Walker S18

  • Page 1 Operator’s Manual Safety, Assembly, Operating, and Maintenance Instructions Please Read and Save These Instructions For Safety, Read All Safety and Operation Beginning S/N: 158891 Instructions Prior to Operating Machine P/N 5000-53...
  • Page 2 Foreword Thank you. . .for purchasing a Walker mower. Every effort has been made to provide you with the most reliable mower on the market, and we are sure you will be among our many satisfied custom­ ers. If for any reason this product does not perform to your expectations, please contact your local dealer.

  • Page 3: Table Of Contents

    Table of Contents General Information Operating Instructions ________________ 1 _____________ 26 HIGHLIGHTED INFORMATION _____________ 1 CONTROL IDENTIFICATION, GLOSSARY ____________________________ 1 LOCATION, AND FUNCTION _____________ 26 IDENTIFYING NUMBER LOCATIONS ________ 1 Engine Choke ________________________ 26 ENGINE SERIAL NUMBER LOCATION _______ 2 Engine Throttle _______________________ 27 SERVICING OF ENGINE AND Forward Speed Control (FSC) ___________ 27...
  • Page 4 Table of Contents Maintenance Instructions REPLACING/REPAIRING _________________ 67 __________ 47 Drive Belts ___________________________ 67 MAINTENANCE SCHEDULE CHART _______ 47 Engine Belt _________________________ 68 IMPORTANT TIPS FOR CARE OF THE PTO Drive Belt ______________________ 69 BRIGGS & STRATTON ENGINE ___________ 48 Ground Drive Belt ____________________ 70 Fuel System _________________________ 48 Fuel Filter ___________________________ 71...

  • Page 5: General Information

    Most accidents associated with the opera­ ● RIGHT HAND (RH) refers to the right-hand side tion or maintenance of a Walker Mower are caused by disregarding basic safety precautions or specific of the tractor when the operator is seated facing warnings.

  • Page 6: Engine Serial Number Location

    If you have any difficulty finding an authorized outlet or obtaining warranty service, please contact our Service Department for assistance: Tractor Serial Number Location Walker Manufacturing Company 5925 E. Harmony Road Serial Number Fort Collins, CO 80528 1-970-221-5614 www.walker.com...

  • Page 7: Specifications

    4.0 (15.1) Fuel Regular Grade Unleaded Gasoline (87 Octane Minimum, 10% Ethanol Maximum) Air Cleaner Remote Mounted Cummins/Fleetguard OptiAir (Walker P/N 2090-1 Primary/2090-3 Safety Filter) ELECTRICAL SYSTEM Battery 12 Volt, 300 CCA (Interstate SP-35) Charging System Flywheel Alternator Charging Output...

  • Page 8: Blade Drive

    Transmission Oil Capacity fl oz (L) 79 (2.3) Transmission Cooling Cooling Fan Mounted on Drive Pulley Oil Filter Hydro-Gear P/N 52114 (Walker P/N 2026-6) ® Ground Travel Speed Forward MPH (km/h) 0-7.4 (0-12) Infinitely Variable Reverse MPH (km/h) 0-5 (0-8) Infinitely Variable...

  • Page 9: Dimensions (Tractor And Mower)

    Specifications MODEL DIMENSIONS (Tractor and Mower) Length in. (cm) Tractor Only 65 (165) Tractor Wheel Base 42.25 (107) Tractor with Tilted Deck 77 (196) (Approximate) Tractor with 42" Collection Deck 89.25 (227) (DC42-1) Width in. (cm) Tractor Only (Outside Tire) 38.5 (98) Tractor with 42"...

  • Page 10: Mower Deck

    1.5 to 4 in. (4 to 10 cm) in 1/2 in. (1 cm) Increments Deck Suspension Independent Torsion-Flex Frame with Caster Wheels and Counterweight Springs DRIVE BELTS Engine Walker P/N 4230-1 Ground Drive Walker P/N 5232-1 PTO Drive Walker P/N 5234-7 SEAT...

  • Page 11: Component Identification

    Component Identification NOTE: Control Identification shown in Operating Instructions section. Grass Handling System 7.0 Bushel Catcher Tilt-Up Latch Spring Clip Counterweight Spring and Protective Cover Deck Support Pins and Height Adjustment Hitch Pins Anti-Scuff Roller Catcher Lift / Dump Handle Fuel Tank and Cap Forward Speed Control...
  • Page 12 Component Identification Catcher Door Removable Grass Gas Spring Catcher Screen (Not Visible) (Not Visible) Gas Spring Cover Catcher Door Catcher Lift / Dump Handle Catcher Air Exhaust Footrests Dump Flap Catcher Door Handle Anti-Scuff Roller Left Hand Drive Wheel Tailpipe Engine Air Cleaner Filter...
  • Page 13 Component Identification Muffler Heat Shield Tailpipe 30 Amp Circuit Breaker Throttle Linkage Dipstick Oil Fill Choke Linkage Air Intake Fuel Pickup Line Hose Rollover Valve Cummins/Fleetguard Air Cleaner EVAP Line Fuel Gauge Fuel Pump Fuel Filter Air Cleaner Cover Fuel Tank Parking Brake Fuel Tank Lever...

  • Page 14: Safety Instructions

    Manufacturing must take full responsibility for safety. comply with safety instructions may result in per­ sonal injury. The Walker Rider Lawnmower has been designed with many safety features to protect the operator The seriousness or degree of importance of each from personal harm or injury.
  • Page 15 Safety Instructions - Before Operating 11. Never attempt to make any adjustments 6. Do not wear loose fitting clothing that could get caught in moving parts. Do not operate this ma­ while the engine is running, except where chine while wearing shorts; always wear ade- specifically instructed to do so.

  • Page 16: Operating

    Safety Instructions - Operating Operate the mower only in daylight or in Do not operate machine if the operator pres- good artificial light with good visibility of the area ence safety switch system is not working. being mowed. Verify proper operation by having the operator lift off the seat with the engine running and mov­...
  • Page 17 Safety Instructions - Operating 14. The maximum recommended slope operat- 20. In case of a clogged or plugged mower deck or GHS catching system: ing angle is 15 degrees or 27% grade. When operating the machine on a slope, reduce speed Disengage the blade clutch (PTO), engage and use caution to start, stop, and maneuver.

  • Page 18: Maintenance

    Safety Instructions - Maintenance To prevent accidental starting of the engine 11. Use care when charging the battery or per­ when servicing or adjusting the machine, re­ forming maintenance on the battery and electri­ move the key from the ignition switch and dis­ cal system: connect the spark plug wires.

  • Page 19: Safety, Control

    Safety Instructions SAFETY, CONTROL, AND INSTRUCTION DECALS Safety, Control, and Instruction Decals are installed on the machine; if any are missing, illegible, or damaged, a replacement should be ordered and installed before putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual. 8600-12 Location: Top of Engine Part Number: 8600-12...
  • Page 20 Safety Instructions SAFETY, CONTROL, AND INSTRUCTION DECALS Safety, Control, and Instruction Decals are installed on the machine; if any are missing, illegible, or damaged, a replacement should be ordered and installed before putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual. 5848-3 Location: Deck Discharge Shield (SD Decks Only)
  • Page 21 Safety Instructions SAFETY, CONTROL, AND INSTRUCTION DECALS Safety, Control, and Instruction Decals are installed on the machine; if any are missing, illegible, or damaged, a replacement should be ordered and installed before putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual. 8600-44 Location: LH Fender Location: RH Fender...

  • Page 22: Assembly Instructions

    IMPORTANT: Make sure battery is securely mount­ ed in the frame. A loose battery may cause damage Walker Mowers are shipped partially assembled to to the case resulting in acid leakage and severe our distribution network, and are typically assem­...

  • Page 23: Battery Charging

    Assembly Instructions IMPORTANT: DO NOT overfill the battery. To fill (activate) battery with electrolyte (if battery has been shipped dry): Electrolyte will overflow through the vented caps onto parts of the machine and WILL result Remove the battery clamp/protector plate, dis­ in severe corrosion.

  • Page 24: Mower Deck Assembly

    Assembly Instructions Mower Deck Assembly Attach Attach Guard Deck Caster Wheels Installation Chute Remove the bolt and nut from each deck caster Carrier Frame wheel fork. Tube Sockets Fit a bearing cup on the outside of each wheel bearing and slide the wheel assembly into the wheel fork.

  • Page 25: Pto Shaft Guard Installation

    Assembly Instructions PTO Shaft Guard Installation Engage the deck carrier frame tube sockets on the tractor support arms. (Refer to Discharge Position the shaft guard as shown and mount with Chute and PTO Shaft Guard Installation two (2) 1/4-20 x 1/2 in. bolts. photo for socket location.) Slide the deck onto the support arms approximately 3 in.
  • Page 26 Assembly Instructions Remove Coupler Installation Tool from quick NOTE: Raising the mower body may be helpful disconnect ring and make sure the ring has in fitting and guiding the deck chute into the “snapped” securely on the spline shaft. blower. IMPORTANT: DO NOT operate tractor with Install the hitch pin through the hole on the end Coupler Installation Tool installed.

  • Page 27: Deck Leveling

    Assembly Instructions Deck Leveling WARNING The mower deck and support frame are jig welded; within normal tolerances, very little, if any, shimming The machine must be shut off during this should be required to level the deck. Tire pressure procedure. will influence the levelness of the deck.

  • Page 28: Preoperating Checklist

    Assembly Instructions PREOPERATING CHECKLIST CHECK ENGINE CRANKCASE OIL LEVEL Before operating the mower for the first time, and as Check the engine crankcase oil level before use and a routine before daily operations, it is important to after each 8 hours of continuous operation. Refer make sure the mower is properly prepared and to LUBRICATION for Checking Engine Crankcase ready for operation.
  • Page 29 Assembly Instructions CHECK FUNCTION OF SAFETY INTERLOCK Tilt-Up Handle SWITCHES Tilt-Up Hook and Refer to Operating Instructions to check for proper Latch Connected operation of safety switches, both during engine starting and with the operator leaving the seat with tractor moving forward or with the mower blades en­ gaged.

  • Page 30: Operating Instructions

    Operating Instructions CONTROL IDENTIFICATION, LOCATION, AND IMPORTANT: Make sure the choke is in the OFF FUNCTION position during normal engine operation; running with the choke in the ON position CAN damage the engine. CAUTION Throttle Choke Before operating the mower, become famil- iar with the location and function of all op- erator controls.

  • Page 31: Engine Throttle

    Operating Instructions Engine Throttle Blade Clutch (PTO) The throttle control lever (red knob) is located on the The blade clutch lever is located on the right side of left side of the seat and is used to control engine the seat behind the right fender and is used to en­ speed.

  • Page 32: Parking Brake

    Operating Instructions Parking Brake Transaxle Lockout Arms The parking brake functions by locking a detent arm The transaxle lockout arms disengage the transax­ to a cog in the hydraulic motor rotor. Moving the les. By lifting the arms up and locking them into lever FORWARD engages the parking brake;...

  • Page 33: Hourmeter

    Release the key when the engine starts, *** In normal operating conditions, oil changes in and it will return to the ON (RUN) position. To stop 100-hour intervals are acceptable. Walker and the engine, rotate the key counterclockwise to the the engine manufacturers recommend engine “O”...
  • Page 34 Operating Instructions The Forward Speed Control also Establishes the Neutral-Park Position of the Steering Levers LEFT WHEEL FORWARD SPEED RIGHT WHEEL STEERING LEVER CONTROL LEVER (FSC) STEERING LEVER Forward Position (No Control Change) Full Forward Ground Speed Position Neutral-Park Position Intermediate Ground Speed Position...

  • Page 35: Starting The Engine

    Before operating the mower, read and un- motor and shorten battery life. Consult your derstand all Safety Instructions and Operat­ Walker dealer or authorized engine dealer for ing Instructions. additional help. After the engine starts, gradually move the...
  • Page 36 Operating Instructions Move the FSC out of NEUTRAL-PARK position Steer by pulling the lever on the side of desired to the desired forward speed. DO NOT hold direction of turn, e.g., pull the LH lever to turn for ward on steering levers. It is not necessary left.

  • Page 37: Engaging The Blade Drive

    Remember it is not necessary to hold TRAL-PARK position. the steering levers forward (a unique Walker feature); always PULL on the le- vers for steering or for reverse motion The FSC may be adjusted forward for faster of the mower.

  • Page 38: Stopping The Machine

    DO NOT erating the mower. Contact your Walker disconnect the safety switches; they are dealer, or refer to ADJUSTMENTS of for the operator’s protection.

  • Page 39: Adjusting Cutting Height

    Operating Instructions ADJUSTING CUTTING HEIGHT WARNING WARNING Remove the key from the ignition switch when leaving the mower unattended. This The engine must be stopped before ad- will prevent children and inexperienced justing cutting height. Disengage the blade operators from starting the engine. clutch (PTO), engaging the parking brake, stop the engine, and remove the ignition key.

  • Page 40: Recommendations For Mowing

    Operating Instructions The mower will “freewheel” with the arms in the RECOMMENDATIONS FOR MOWING LOCKOUT position. The levers must be in the highest position to completely unlock the trans­ DANGER axles. Do not mow around overhanging tree Transaxle Lockout Arm branches or bushes at the same height as the operator’s torso and head where inad- vertent contact may cause injury.
  • Page 41 Operating Instructions ● When mowing, operate the engine at full throt- tle for the best cutting action and performance of the grass handling system (GHS). Mowing Discharge with a lower engine RPM causes the mowing Shield blade to not cut clean and tear the grass. The engine is designed to be operated at full speed.

  • Page 42: Recommendations For Tilt-Up Deck Operation/Transport

    Operating Instructions RECOMMENDATIONS FOR TILT-UP DECK OPERATION/TRANSPORT Maximum Recommended Slope - Do Not Operate To avoid potential deck and/or tractor damage while on Steep Slopes using the tilt-up deck, the following recommenda­ tions are offered: Do not move the tractor with the deck in the ●...

  • Page 43: Grass Handling System (Ghs)

    Operating Instructions GRASS HANDLING SYSTEM (GHS) Grass Exhaust Screen Catcher (Removable) ® Grass-Pak Catcher Vane Switch Door Spring (Not Visible) Actuator Catcher ® Powerfil Air Exhaust Drive Motor “Full” Signal Horn Clutch Catcher Door PTO and Blade Gear Drive ® Powerfil Delivery Spout Shear...

  • Page 44: General Information

    Operating Instructions General Information DANGER The Grass Handling System (GHS) consists of a rear discharge, collection mower deck connected to ROTATING BLOWER BLADES a 12.75 in. (32 cm) blower and a rear mounted grass catcher with 7.0 bushel (246 liters) capacity. The NEVER operate the GHS blower with the GHS blower operates any time the mower blade blower discharge chute uncovered (grass...

  • Page 45: Clogging Checklist

    Operating Instructions Clogging Checklist Blades Must Operate at In case of clogging, there will be a distinct change Right Angles (90 Degrees) in the sound of the blower, i.e., the blower sound will stop. Also, the mower deck will begin to leave a FORWARD trail of grass clippings.

  • Page 46: Using The Tilt-Up Deck

    Operating Instructions ● Check the interior of the chute connecting the “Full” Signal Horn mower deck to the blower for smoothness and The GHS catcher has a “full” signal horn to alert freedom from obstruction. the operator to dump the catcher when it is full (to ●...

  • Page 47: Cleaning The Ghs Exhaust Screen

    Operating Instructions Cleaning the GHS Exhaust Screen CAUTION To remove the grass catcher screen for cleaning, open the catcher door, push forward and pull down Use leg muscles and firm footing when lift- on the grass catcher screen knobs (on either side of ing the catcher to dump;...

  • Page 48: Using The Dump Bag

    Operating Instructions Using the Dump Bag Catcher Lift / Dump Handle Open the back door by lifting on the door handle. Orient the dump bag with one of the handle straps on the bag opening facing up. Tailgate Door Handle (Not Visible) Hook Bag on Bumper...

  • Page 49: Power Dump Option

    Operating Instructions Power Dump Option CAUTION When equipped with the optional power dump sys­ tem, the operator dumps the catcher while sitting in The operator should be in the seat and by- the seat. A toggle switch operating a power ram is standers stay clear when the power dump used to raise and lower the catcher.
  • Page 50 Operating Instructions RH Catcher Catcher Door Arm Door Arm Door Actuator Catcher Door Gas Spring Cable Guide Grass Catcher Lift Channel Spring Lift LH Catcher Door Arm Power Dump Ram Actuator Cable Assembly Guard Power Dump Mount Power Dump Switch Power Dump Components...

  • Page 51: Maintenance Instructions

    CAUTION Maintenance Instructions Maintenance procedures requiring special training or tools should be performed by a trained technician. MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTERVALS - MODEL S18 Every Ref. Service Item Daily Hours Hours Hours Yearly 2 Years Page Check Engine Crankcase Oil Level...

  • Page 52: Important Tips For Care Of The Briggs & Stratton Engine

    Maintenance Instructions BRIGGS & STRATTON TIPS IMPORTANT TIPS FOR CARE OF THE DANGER BRIGGS & STRATTON ENGINE Fuel System Make sure to keep hands clear of exhaust pipe, muffler, and moving parts when ● Fuel must be clean—free from water, dirt, and checking airflow.

  • Page 53: Lubrication

    Maintenance Instructions LUBRICATION LUBRICATION Remove the dipstick again and check the oil lev- el on the dipstick. The oil level should be within the “Operating Range” on the dipstick (between WARNING the LOW mark and the FULL mark). IMPORTANT: DO NOT operate engine without DO NOT attempt to lubricate the machine a sufficient oil supply in the crankcase.

  • Page 54: Changing Engine Crankcase Oil/Oil Filter

    Maintenance Instructions LUBRICATION Before removing the oil filter, clean the area Changing Engine Crankcase Oil/Oil Filter around the filter to keep dirt and debris out of Change the engine crankcase oil and filter after ev- the engine. ery 100 hours of operation as follows: Remove the old oil filter and wipe off the filter Park the mower on a level surface with the mounting surface on the engine.

  • Page 55: Grease Fitting And Oil Point Lubrication

    Maintenance Instructions LUBRICATION Grease Fitting and Oil Point Lubrication 10. Start the engine and check for oil leaks around the oil filter. Stop the engine, recheck the oil Lubricate the grease fittings and oil points after ev- level, and add oil if necessary. (When the en­ ery 25 hours of operation.
  • Page 56 Maintenance Instructions LUBRICATION Ident Lubrication Ident Lubrication Location Type Places Location Type Places Catcher Hinge Point Deck Caster Wheel Fork Pivot Grease Throttle Control Cable Ends Blade Drive Gearbox Oil* Engine Dipstick / Oil Filler Oil*** Tee Gearbox, Deck Oil* Choke Control Cable Ends Deck Caster Wheel Bearing Grease...
  • Page 57 Maintenance Instructions LUBRICATION 21 & 28 23 & 27 Chassis and Deck Lubrication Points (DC36R Shown)

  • Page 58: Mower Deck Gearbox Lubrication

    Maintenance Instructions LUBRICATION Mower Deck Gearbox Lubrication NOTE: In case the gearboxes are completely drained of oil, approximately 5 fl. oz. (15 cl) of oil NOTE: These instructions apply to all mower decks per gearbox is required to refill the gear drive with gear-driven blades.

  • Page 59: Transaxle Oil And Filter Change

    Maintenance Instructions LUBRICATION Transaxle Oil and Filter Change Before reinstalling the elbows, screw the lock­ ing nut on the elbows down until they are snug Change the transaxle oil after the initial break-in (the o-ring on the elbow will be to the bottom of period of 75-100 hours.

  • Page 60: Cleaning

    Maintenance Instructions CLEANING CLEANING IMPORTANT: Use only Cummins/Fleetguard air filter elements for replacement (Walker 2090-1 and 2090-3). Aftermarket filters may not seal properly or CAUTION filter efficiently. IMPORTANT: The Cummins/Fleetguard air cleaner If a pressure washer is used on the ex- uses a dry paper-type air filter element.
  • Page 61 Maintenance Instructions CLEANING Inspect the paper element after every 100 hours of Without removing, visually inspect the condition service and replace the element and safety filter ev- of the safety filter for damage or holes. The ery 400 hours (or when dirty or damaged). More safety filter should only be removed for replace­...

  • Page 62: Engine Air Cooling System

    Maintenance Instructions CLEANING 10. Install the cover with the word “DOWN” properly Engine Air Cooling System oriented to the bottom of the canister. Twist the Cooling Air Intake Screen OptiAir™ cover to the right and put into the “closed” position. To prevent engine overheating and possible engine damage, clean grass clippings, chaff, and dirt from Mono Latch...

  • Page 63: Cylinder Head Cooling Fins

    Maintenance Instructions CLEANING Cylinder Head Cooling Fins It is essential for performance and longevity of the Cooling air-cooled engine to keep the cylinder head cooling Fins fins clean and free of obstruction. After every 8 hours of operation, check the performance of the cooling system by starting the engine, holding a hand adjacent to the cylinder head, and feeling the cooling airflow.

  • Page 64: Grass Buildup In Mower Deck Housing

    Maintenance Instructions CLEANING Grass Buildup in Mower Deck Housing NOTE: If the buildup is severe, it may be easier to clean the deck by removing the deck assem­ bly from the tractor and standing the deck as­ DANGER sembly on its “nose”. NOTE: While some degree of material buildup Before raising or removing the mower in the mower deck housing can be tolerated, a...

  • Page 65: Ghs Blower

    NOTE: A visual clue of binding of the blower wheel result of an oil leak. If an oil leak is noticed, contact is the blower blade tips are polished from rubbing your local Walker dealer. on dirt. When a dirt deposit is found, use a high pressure...

  • Page 66: Checking/Servicing

    Maintenance Instructions CHECKING/SERVICING CHECKING/SERVICING Electrolyte Level The battery electrolyte level should be checked af- DANGER ter every 25 hours of operation. To check electro- lyte level: To prevent accidental starting of the en- Remove battery cell filler caps. gine when servicing or adjusting the ma- chine, remove the key from the ignition Check the electrolyte level.

  • Page 67: Charging The Battery

    Maintenance Instructions CHECKING/SERVICING Sharpen Mower Blades Charging the Battery Check mower blade(s) for straightness, sharp- DANGER ness, condition of the cutting edge, and balance every 10 hours of operation (or more often when mowing abrasive type grass or operating on sandy BATTERIES PRODUCE EXPLOSIVE GASES soils).

  • Page 68: Drive Belts

    Maintenance Instructions CHECKING/SERVICING If the blade cutting edge is dull or nicked, it should be sharpened. Remove blades for sharpening by grasping the end of the blade us­ ing a rag or a thick, padded glove, while loosen­ ing and removing the nut, lock washer, and flat washer that mounts the blade.

  • Page 69: Mower Deck Gearbox Oil Seals

    Refer to ADJUSTMENTS for Blade Brake the fuel line clamps for tightness. Good preven­ Band Adjustment in this section, or contact your au­ tive maintenance calls for complete replacement of thorized Walker dealer for this service. fuel lines and clamps every two (2) years.

  • Page 70: Pto U-Joints

    If any of the following conditions occur during start­ ing or operating, a safety interlock switch may be If the FSC friction lock needs to be adjusted, refer to malfunctioning. Contact your Walker dealer for trou­ ADJUSTMENTS for Step 7 - Forward Speed Con- bleshooting and/or replacement.

  • Page 71: Replacing/Repairing

    Maintenance Instructions REPLACING/REPAIRING REPLACING/REPAIRING Drive Belts There are three (3) individual belts on the ma­ DANGER chine: ● Engine Belt (Matched Set of 2) To prevent accidental starting of the en- gine when replacing parts or repairing the ● PTO Drive Belt machine, remove the key from the ignition switch and disconnect the spark plug ●...

  • Page 72: Engine Belt

    Maintenance Instructions REPLACING/REPAIRING Engine Belt To remove the engine belt: Roll the belt off the pulleys and remove the belt, then slowly release the idler pulley. Relax belt by raising the spring-loaded idler pulley. Compound Pulley Engine Belt Tension Engine Pulley Spring Raise Idler Pulley to...

  • Page 73: Pto Drive Belt

    Maintenance Instructions REPLACING/REPAIRING PTO Drive Belt To remove the PTO drive belt: Remove the two (2) wing nuts and belt guide on the PTO Drive Pulley. Remove the engine belt, as described in previous section. With the PTO clutch disengaged, roll the belt off the idler pulley and remove the belt.

  • Page 74: Ground Drive Belt

    Maintenance Instructions REPLACING/REPAIRING Ground Drive Belt To remove the ground drive belt: Slide belt off pulleys, then slowly release the idler pulley. Raise the spring-loaded idler pulley to relax belt. Raise Idler Pulley to Relax Belt Drive Pulley Ground Drive Belt LH Transaxle Drive Pulley...

  • Page 75: Fuel Filter

    Cutting Blade Shear Bolts Model S18 is equipped with an in-line fuel filter be­ tween the fuel tank and the fuel pump. Visually in­ spect the filter periodically, and replace the filter ev- ery 400 hours of operation or when contamination is suspected or found in the fuel.

  • Page 76: Mower Blades

    An excessive amount of the flat section of the ING/SERVICING in this section. If blades are re­ blade has been ground away (removed) when placed, always use Walker original equipment the blade is sharpened. Replace the blade blades to ensure safety and optimum performance.

  • Page 77: Adjustments

    Maintenance Instructions ADJUSTMENTS ADJUSTMENTS Adjust the position of the RH lever by turning the stop bolt in the Speed Control Actuator in or out. Transmission Control Turning the stop bolt in will make the RH lever move back, and turning it out will make it move IMPORTANT: The proper adjustment of the trans­...

  • Page 78: Neutral Function Adjustment

    Maintenance Instructions ADJUSTMENTS Step 3 - Neutral Function Adjustment Securely block the tractor up so the drive tires are off the ground. With the Forward Speed Control (FSC) in NEU- TRAL-PARK, the lever should be straight up. Adjust the tracking adjustment nuts at the front Adjust the angle of the FSC lever by removing of both control rods so that 2 or 3 threads are the ball joint on the lever end of the FSC Rod,...

  • Page 79: Full Forward Speed Adjustment

    Maintenance Instructions ADJUSTMENTS WARNING T-Handle Maximum Hex Wrench Speed Tracking Adjustment The following adjustments are made with the engine running. Keep all body parts and tools away from rotating and hot components, and secure all loose cloth- ing. Transmission Control Arm With the body lowered and the FSC in NEU- TRAL-PARK, start the engine.

  • Page 80: Fsc Neutral Switch Adjustment

    Maintenance Instructions ADJUSTMENTS If the machine is tracking straight throughout NOTE: Adjust the bolt the speed range except at maximum speed, downward for quicker use the following adjustment procedure: activation (Switch Open). With the engine off, place the FSC in full FSC Switch FORWARD.

  • Page 81: Forward Speed Control Friction Adjustment

    Maintenance Instructions ADJUSTMENTS Step 7 - Forward Speed Control Friction Adjustment FSC Full Forward Position Pull Steering Levers Back To Check Friction Lock FSC Friction Adjustment Test (Checking Friction Lock) Place the FSC lever in the full FORWARD position, and pull both steering levers fully back; the FSC lever should not move.

  • Page 82: Blade Clutch (Pto)

    Maintenance Instructions ADJUSTMENTS Blade Clutch (PTO) With the clutch engaged, adjust the length of the clutch actuator rod to achieve a clutch spring Clutch Engagement/Belt Tension assembly bolt head clearance of 1/4 in. to 5/16 in. (6.5 mm to 8 mm). To adjust the clutch actuator rod The clutch engagement and PTO belt tension are length, loosen both ball joint jam nuts (one ball joint adjusted using the clutch actuator rod.

  • Page 83: Blade Brake Band Adjustment

    Maintenance Instructions ADJUSTMENTS 11 in.* (280 mm) 6 in.* Knuckle (152.5 mm) Clutch Spring Assembly Joint (Spring Uncompressed) 2-1/8 in.* (54 mm) *NOTE: Factory preset dimensions. Reset to these dimensions prior to adjustment if components have been disassembled. PTO Clutch Disengaged Adjust the working travel of the clutch idler pulley by Blade Brake Band Adjustment adjusting the brake band nut:...

  • Page 84: Tilt-Up Deck Adjustable Stop

    Maintenance Instructions ADJUSTMENTS After adjustments are complete, verify blade Tilt-Up Deck Adjustable Stop brake performance by following the procedure When the carrier frame hinge joint is properly ad­ in CHECKING/SERVICING the Blade Brake justed, the deck lock levers should move in and out Action in this section.

  • Page 85: Ghs "Full" Signal Horn Adjustment

    Maintenance Instructions ADJUSTMENTS GHS “Full” Signal Horn Adjustment Exhaust ® The vertical position of the Grass-Pak switch is Screen 4 to 4-1/2 in. critical to make sure the catcher box does not over­ (10 to 11.5 cm) fill causing the delivery chute to clog. The vertical position can be adjusted by moving the aluminum ®...

  • Page 86: Maintenance And Service Record Sheet

    MAINTENANCE AND SERVICE RECORD SHEET DATE SERVICE ENGINE ITEM HOURS ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________...

  • Page 87: Warranty

    (2) years* after the date of sale to the original retail pur­ chaser unless the product is used for rental purposes, in which case this warranty is limited to ninety (90) days. At Walker’s request, customer will make the defective part available for inspection by Walker and/or return the defective part to Walker, transportation charges prepaid.
  • Page 88 WALKER MFG. CO. • 5925 E. HARMONY ROAD, FORT COLLINS, CO 80528 • (970) 221-5614 FORM NO. 042320 PRINTED IN USA www.walker.com ©2020 WALKER MFG. CO...

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