Walker T23 Operator's Manual
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Walker T23 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: 134242
Instructions Prior to Operating Machine
P/N 8000-27

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Summary of Contents for Walker T23

  • 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: 134242 Instructions Prior to Operating Machine P/N 8000-27...
  • 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 _____________ 28 HIGHLIGHTED INFORMATION _____________ 1 CONTROL IDENTIFICATION, GLOSSARY ____________________________ 1 LOCATION, AND FUNCTION _____________ 28 IDENTIFYING NUMBER LOCATIONS ________ 1 Operating Controls ____________________ 28 ENGINE SERIAL NUMBER LOCATION _______ 2 Engine Choke _______________________ 28 SERVICING OF ENGINE AND Engine Throttle ______________________ 29...
  • Page 4 Table of Contents Maintenance Instructions CHECKING/SERVICING __________________ 69 __________ 54 Security of Air Filtration Components ____ 69 MAINTENANCE SCHEDULE CHART _______ 54 Battery ______________________________ 69 IMPORTANT TIPS FOR CARE Electrolyte Level _____________________ 69 OF THE KOHLER ENGINE ________________ 55 Cleaning the Terminals ________________ 69 Fuel System _________________________ 55 Charging the Battery __________________ 69 Starting/Stopping _____________________ 55...

  • Page 5: General Information

    Most accidents associated with the opera- ● STEERING LEVERS steer the tractor by con- tion or maintenance of a Walker Mower are caused trolling the dual hydrostatic transmissions. by disregarding basic safety precautions or specific warnings. Such accidents, in most cases, can be ●...

  • Page 6: Servicing Of Engine And Drivetrain Components

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

  • Page 7: Specifications

    Fuel Tank Capacity gal (L) 4.7 (17.8) Fuel Regular Grade Unleaded Gasoline (87 Octane Minimum, 10% Ethanol Maximum) Air Cleaner Remote Mounted Donaldson Radialseal (Walker P/N 5090-1 Primary/5090-3 Safety Filter) ELECTRICAL SYSTEM Battery 12 Volt, 35AH, 300 CCA Charging System Flywheel Alternator Charging Output...

  • Page 8: Blade Drive

    20 (137) Drive 15 (103) Tailwheel 20 (137) * If equipped with optional pneumatic tires DRIVE BELTS Engine PTO Walker P/N 8230 Jackshaft Drive Walker P/N 6250-1 Ground Drive, Micro-V Walker P/N 7248 Blower (GHS Model) Walker P/N 7234-2 SEAT...

  • Page 9: Dimensions (Tractor And Mower)

    Specifications MODEL DIMENSIONS (Tractor and Mower) Length in. (cm) Tractor Only 64.25 (164) Tractor Wheel Base 41 (104) Tractor with Tilted Deck 77 (196) (Approximate) Tractor with 48" Collection Deck 93 (236) (DC48-1) Width in. (cm) Tractor Only (Outside Tire) 39 (99) Tractor with 48"...

  • Page 10: Component Identification

    Component Identification NOTE: Control Identification shown in Operating Instructions section. Turbine Grass Handling System Precleaner 10.0 Bushel Catcher Tilt-Up Latch Spring Clip Counterweight Spring and Protective Cover Transmission Control Rod Adjustment Nuts Deck Support Pins and Height Adjustment Hitch Pins Anti-Scuff Roller Catcher Lift /...
  • Page 11 Component Identification Removable Grass Catcher Door Catcher Screen Gas Spring (Not Visible) (Not Visible) Gas Spring Cover Catcher Door Catcher Lift / Dump Handle Instrument Panel Guard Catcher Air Exhaust Instrument Panel Box (Shock Mounted) Dump Plate Anti-Scuff Roller Catcher Door Handle Muffler Left Hand...
  • Page 12 Component Identification Fuel Filter Air Intake Plenum Fuel Pump Voltage Regulator / Donaldson Air Cleaner Rectifier Air Cleaner Cover Exhaust Grass Air Filter Shield Restriction Gauge Throttle and Fuel Pickup Choke Linkage Line Muffler Heat EVAP Line Shield Roll Over Valve Oil Dipstick / Oil Fill Air Intake Hose Fuel Gauge...

  • Page 13: 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 14 Safety Instructions - Before Operating Do not wear loose fitting clothing that could get 11. Never attempt to make any adjustments 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 15: 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- Sit on the seat when starting the engine and ing two controls, one at a time;...
  • Page 16 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 26% 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 17: 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 18: 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. 8600-4 Location: Adjacent to Blower Discharge Chute through Body...
  • Page 19 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. 8600-28 Location: Each End of Mower Deck Location: Precleaner Tube...
  • 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. Location: Hydrostat Oil Reservoir 8600-23 Location: Right Side, Behind Operator Seat...
  • 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. 60 lb·ft (81 N·m) 8600-9 Location: Gearbox Cover...

  • Page 22: Assembly Instructions

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

  • Page 23: Battery Charging

    Assembly Instructions After charging the battery, adjust the electrolyte To fill (activate) battery with electrolyte (if battery has level to the bottom of the vent wells [1/4 to 1/2 in. been shipped dry): (6 to 13 mm) above the plates]. Remove the battery hold-down bar, disconnect IMPORTANT: DO NOT overfill the battery.

  • Page 24: Mower Deck Assembly

    Assembly Instructions Mower Deck Assembly Carrier Frame Tube Sockets Attach Deck Caster Wheels Installation Attach Guard Chute Remove the bolt, nut, and axle spacer tube from each deck caster wheel fork. Fit the axle spacer tube through the wheel hub and fit the assembly into the wheel fork.

  • Page 25: Pto Shaft Guard Installation

    Assembly Instructions PTO Shaft Guard Installation Deck Support Position the shaft guard as shown and mount with Arms two (2) 1/4-20 x 1/2 in. bolts. Attach Guard Mower Deck Installation Engage the deck carrier frame tube sockets on the tractor support arms (refer to Discharge Chute and PTO Shaft Guard Installation pho- PTO Shaft Guard Installation to for socket location), slide the deck onto the...
  • Page 26 Assembly Instructions Grease Deck Internal Balls PTO Drive Support Arms Locked on Shaft Shaft PTO Connection Arrows on Shaft and Tube PTO Coupler Coupler Ring in (Used to Align When Sliding Together) U-Joint Locked Position PTO Shaft Connection Quick Disconnect Ring “Locked” Position Remove Installation Tool from quick disconnect Slide the deck the rest of the way on the deck arms.
  • Page 27 Assembly Instructions Spring Tension Adjustment Nut Located Under Lower Spring Hook (Not Visible) Hitch Pins Counterweight Springs Lock Deck on Clip Onto Body With Support Arms Forward Body Tilted Up Deck Counterweight Spring Installation...

  • Page 28: 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 29: Preoperating Checklist

    Assembly Instructions PREOPERATING CHECKLIST Check the engine crankcase oil level before use and after each 8 hours of continuous operation. Refer Before operating the mower for the first time, and as to LUBRICATION for Checking Engine Crankcase a routine before daily operations, it is important to Oil Level in Maintenance Instructions.
  • Page 30 Assembly Instructions CHECK FUNCTIONS OF INSTRUMENT PAN- Tilt-Up Handle EL AND WARNING HORN Tilt-Up Hook and Turn the ignition key to the ON (RUN) position. Volt- Latch Connected meter, Oil Pressure Warning Light, and Warning Horn should all operate, indicating normal function. CHECK FUNCTION OF SAFETY INTERLOCK SWITCHES Refer to Operating Instructions to check for proper...

  • Page 31: Operating Instructions

    Operating Instructions CONTROL IDENTIFICATION, LOCATION, AND Engine Choke FUNCTION The choke control lever (black knob) is located on Operating Controls the left side of the seat. To start a cold engine, move the choke control forward to the ON position. After engine starts, move the choke control toward the CAUTION OFF position, keeping enough choke to allow the...

  • Page 32: Engine Throttle

    Operating Instructions Steering Levers Throttle Choke Each drive wheel is controlled by its own indepen- dent steering lever, for both steering function and FORWARD/REVERSE motion. The FSC lever sets the maximum forward speed, and also sets the for- ward position of the steering levers. The steering levers operate only with a backward pulling move- ment of the lever, which causes the drive wheel for that lever to first slow down, stop, and then reverse...
  • Page 33 Operating Instructions The Forward Speed Control also Establishes the Neutral-Park Position of the Steering Levers FORWARD SPEED RIGHT WHEEL LEFT WHEEL CONTROL LEVER (FSC) STEERING LEVER STEERING LEVER Forward Position Full Forward (No Control Change) Ground Speed Position Neutral-Park Position Intermediate Ground Speed Position...

  • Page 34: Parking Brake

    Operating Instructions Parking Brake Transmission Lockout Levers The parking brake functions by locking a pin into the The transmission lockout levers disengage the hy- hydrostatic transmission pinion gear teeth. Moving drostatic transmissions. By lifting the lever on top the lever FORWARD engages the parking brake; of the transmission and locking it into place with the moving the lever BACKWARD releases the brake.

  • Page 35: Instrument Panel

    Operating Instructions Instrument Panel This illustration shows the configuration of the switches and indicators located on the instrument panel. Oil Pressure Over Temperature Warning Light Warning Light Ignition Voltmeter Switch Hourmeter Light Switch Circuit Breaker - 7 Amp (Optional) Warning Horn Instrument Panel...

  • Page 36: Hourmeter

    *** In normal operating conditions, oil changes in head temperature are above the safe operating 100-hour intervals are acceptable. Walker and limit and the engine is overheating [above 305° F the engine manufacturers recommend engine (152°...

  • Page 37: Ignition Switch

    Operating Instructions Ignition Switch Circuit Breakers The ignition switch is used to start and stop the en- One manual reset 7 amp circuit breaker that pro- gine. The switch has three positions: “O” is the OFF tects the safety circuits and GHS is located on the position, “I”...

  • Page 38: Adjusting Ground Speed And Steering

    FSC lever in position since a friction damage the starter motor and shorten battery lock maintains the selected lever position (and life. Consult your Walker dealer or authorized forward travel speed). Kohler dealer for additional help. WARNING After the engine starts, make sure the oil pres- sure light goes off.
  • Page 39 The function ♦ Remember it is not necessary to hold the of this switch should be checked by the op- steering levers forward (a unique Walker erator raising off the seat with the tractor feature); always PULL on the levers for moving forward (allow 1/2 second “off the...

  • Page 40: Engaging The Blade Drive

    Mainte nance Instructions or contact on the steering levers, especially when go- your Walker dealer. ing downhill, as this can lift the tractor tail wheel off the ground and set up a bucking ENGAGING THE BLADE DRIVE motion due to operator overcontrol.
  • Page 41 Operating Instructions CAUTION If the cutting blades strike a stationary ob- ject while mowing, stop the mower imme- diately, disconnect the spark plug wires, lift the deck, and inspect the deck and blades thoroughly for damage. Make sure that the blade timing has not been dis turbed (the blades should be at 90 degrees to each other).

  • Page 42: Stopping The Machine

    (5) seconds, the brake the same procedure as used to normally stop and should be adjusted or repaired before op- park the machine. erating the mower. Contact your Walker dealer, or refer to ADJUSTMENTS of Clutch Disengagement/Brake Action in Maintenance Instructions.

  • Page 43: Adjusting Cutting Height

    Operating Instructions ADJUSTING CUTTING HEIGHT The mower will “freewheel” with the levers in the LOCKOUT position. The levers must be in the highest position to completely unlock the trans- WARNING missions. The engine must be stopped before ad- justing cutting height. Disengage the blade Lockout Lever clutch (PTO), stop the engine, and remove the ignition key.

  • Page 44: Recommendations For Mowing

    Operating Instructions RECOMMENDATIONS FOR MOWING ● When mowing, operate the engine at full throt- tle for the best cutting action and performance of the DANGER grass handling system (GHS). Mowing with a lower engine RPM causes the mowing blade to not cut clean and tear the grass.
  • Page 45 Operating Instructions Maximum Recommended Slope - Do Not Operate Discharge on Steep Slopes Shield Side Discharge Deflector Shield in Lowest Position ● When operating on a slope, reduce speed and 16 in. use caution to start, stop, and maneuver. Avoid 15°...

  • Page 46: Recommendations For Tilt-Up Deck Operation/Transport

    Operating Instructions RECOMMENDATIONS FOR TILT-UP DECK OPERATION/TRANSPORT To avoid potential deck and/or tractor damage while using the tilt-up deck, the following recommenda- tions are offered: ● Do not move the tractor with the deck in the tilt-up position since both the roller wheels (on the back of the deck) and the GHS discharge chute may be damaged by moving the tractor.

  • Page 47: Grass Handling System (Ghs)

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

  • Page 48: General Information

    Operating Instructions General Information NOTE: When a side discharge or mulching mow er deck is installed on the GHS model, a blower intake The Grass Handling System (GHS) consists of a cover should be installed in the blower intake tube. rear discharge mower deck connected to a 10.5 in.

  • Page 49: Clogging Checklist

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

  • Page 50: Using The Tilt-Up Deck

    Operating Instructions ● Check the blower wheel for bent blades and “Full” Signal Horn excessive clearance between the blade tip and the The GHS catcher has a “full” signal horn to alert blower housing. A clearance greater than the operator to dump the catcher when it is full (to 1/8 in.

  • Page 51: Cleaning The Ghs Exhaust Screen

    Operating Instructions Cleaning the GHS Exhaust Screen Dumping the Catcher To remove the grass catcher screen for cleaning, DANGER open the catcher door, push forward and pull down on the grass catcher screen knobs (on either side of the screen), and slide the screen out. Use a high Do not mow or dump grass within 5 feet pressure washer or water spray and brush to clean (1.5 meters) of an embankment or retaining...

  • Page 52: Using The Dump Bag

    Operating Instructions Using the Dump Bag 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 Catcher Lift / Dump Handle Hook Bag on Bumper Dumping Catcher into Dump Bag...

  • Page 53: Power Dump Option

    Operating Instructions Power Dump Option Hi-Dump Option ® When equipped with the optional power dump sys- When equipped with the optional Hi-Dump system, ® tem, the operator dumps the catcher while sitting in the operator raises and dumps the catcher while sit- the seat.
  • Page 54 Operating Instructions NOTE: If grass tends to hang up in the catcher after raising the catcher with the Hi-Dump , “jiggle” ® the steering levers and make the tractor bounce a little to unstick the grass and make it slide out of the catcher.
  • Page 55 Operating Instructions Catcher Door Upper Catcher Door Gas Spring Grass Catcher Cable Guide Lift Channel Power Dump Ram Actuator Lower Fork Door Arm Actuator Cable Guide Cable Assembly Spring Actuator Mount Assembly Dog Leg Assembly Rubber Bumper Power Dump Components...
  • Page 56 Operating Instructions Catcher Door Upper Catcher Door Gas Spring Grass Catcher Cable Guide Lift Channel Gas Spring Assembly Lower Door Arm Actuator Cable Assembly Catcher Pivot Arm Control Lift Rod Dump Cylinder Control Hydraulic Lift Rod Valve Block Hydraulic Reservoir/ Power Unit Safety Lockout Arm...

  • Page 57: Maintenance Instructions

    Δ Change engine oil and filter after first 5 hours of operation of a new engine (break-in period) ΔΔ Change every 2 years or 1000 hours ΔΔΔ See your Walker dealer for this service or refer to the Walker Service Manual ◊...

  • Page 58: Important Tips For Care Of The Kohler Engine

    Maintenance Instructions IMPORTANT TIPS FOR CARE OF THE KOHLER DANGER 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. or ganic material.

  • Page 59: Lubrication

    Maintenance Instructions LUBRICATION LUBRICATION IMPORTANT: DO NOT operate engine without a sufficient oil supply in the crankcase. DO NOT operate with the oil level below the “L” mark or WARNING above the “F” mark on the dipstick. If additional oil is needed, refer to Specifications DO NOT attempt to lubricate the machine for proper crankcase lubricant.

  • Page 60: Changing Engine Crankcase Oil/Oil Filter

    Maintenance Instructions LUBRICATION Changing Engine Crankcase Oil/Oil Filter Remove the old oil filter and wipe off the filter mounting surface on the engine. Change the engine crankcase oil after every 100 hours of operation and replace the oil filter every Apply a thin coating of clean oil to the rubber other oil change (every 200 hours of operation).

  • Page 61: 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 62: Mower Deck Spindle Lubrication

    Maintenance Instructions LUBRICATION Belt Drive Dipstick Gearbox Dolly Wheel Pivot Jackshaft U-Joints Gearbox, Dolly Wheel, and U-Joint Lubrication Vent Plug Mower Deck Spindle Lubrication Gearbox For the DS42 Belt Drive mower deck, lubricate each deck spindle grease fitting every 25 hours. Use SAE general purpose lithium or molybdenum base Dipstick Location, Tractor PTO Gearbox grease for grease fittings.

  • Page 63: Hydrostatic Transmission Fluid

    Checking Hydrostatic Transmission Fluid Level mission oil level is low and the transmission will need to be serviced by an authorized Walker dealer. The hydrostatic transmissions are sealed units When a transmission is found to be low on oil, it is...
  • Page 64 Maintenance Instructions LUBRICATION Ident Lubrication Ident Lubrication Location Type Places Location Type Places Deck Caster Wheel Fork Pivot Grease Brake Actuator Rod and Brake Deck Caster Wheel Bearing Grease Band Pivots (Clevis) Δ Blade Spindle Grease Brake Actuator Pivot Grease Pivot Assembly, Tilt-Up Deck Grease Throttle Control Cable Ends...
  • Page 65 Maintenance Instructions LUBRICATION 30 & 40 33 & 39 Chassis and Deck Lubrication Points (DC42 Shown)

  • Page 66: Cleaning

    Maintenance Instructions CLEANING CLEANING Turbine Precleaner The turbine precleaner is mounted on a remote air CAUTION intake tube connected to the Donaldson air cleaner. A spinning fan driven by the intake airflow separates dust from the air, giving the initial stage of air clean- If a pressure washer is used on the ex- ing.

  • Page 67: Donaldson Radialseal™ Air Cleaner

    Inspect the paper element after every 100 hours of ments for replacement (Donaldson P822686 or service and replace the element and safety filter Walker 5090-1). Aftermarket filters may not seal yearly (or when dirty or damaged). More frequent properly or filter efficiently.
  • Page 68 Maintenance Instructions CLEANING NOTE: Use care when cleaning the filter ele- NOTE: DO NOT use petroleum based lubri- ment. The filter element and/or seal surface cants on the sealing surfaces of the filter; use may be damaged by tapping too hard or hitting tal cum powder or dry silicone lubricants if re- on an uneven surface or sharp edge.

  • Page 69: Engine Cooling System

    Maintenance Instructions CLEANING Engine Cooling System CAUTION Cooling Air Intake Screen DO NOT use a pressure washer to clean the To prevent engine overheating and possible engine cooling system on an air-cooled engine, damage, clean grass clippings, chaff, and dirt from mud may form under the cooling shroud the rotating engine cooling air intake screen after on the cylinder head and cooling fan.

  • Page 70: Grass Buildup In Mower Deck Housing

    Maintenance Instructions CLEANING Grass Buildup in Mower Deck Housing deteriorates and clogging begins to occur because of too much buildup on the baffling and housing. DANGER Lower the deck to the normal operating position and re-engage the deck lock levers. Before raising or removing the mower deck for cleaning, stop the engine, re move the ignition key, and disconnect the spark...

  • Page 71: Ghs Exhaust Screen

    Maintenance Instructions CLEANING Use a pressure washer or water spray, and di- Hydrostatic Transmission Cooling Fins rect the spray inside the blower housing against Keeping the cooling fins on the hydrostatic transmis- the blower blades. Water pressure will cause sions clean and free of obstruction is essential to the blower wheel to begin to spin and the com- avoid overheating the transmission fluid and short- bination of spinning action and water will effec-...

  • Page 72: Checking/Servicing

    Maintenance Instructions CHECKING/SERVICING CHECKING/SERVICING Check the electrolyte level. If the level is below the bottom of the vent well, fill with distilled wa- ter to the bottom of the vent wells [1/4 to 1/2 in. DANGER (6 to 13 mm) above the plates]. Replace filler caps.

  • Page 73: Tire Pressure

    Maintenance Instructions CHECKING/SERVICING Tire Pressure WARNING Inflate tires to pressures shown below: Deck Caster Wheel* = 20 PSI (137 kPa) DO NOT try to straighten a blade that is Drive = 15 PSI (103 kPa) bent. NEVER weld a broken or cracked Tailwheel = 20 PSI (137 kPa) blade.

  • Page 74: Drive Belts

    Maintenance Instructions CHECKING/SERVICING Check blade balance by positioning the blade Drive Belts horizontally on a blade balancer or use a nail Raise the body and inspect the condition of the or shaft through the center hole. If either end of four (4) belts (3 belts on SD models) every 25 hours the blade rotates downward, grind (remove) of operation - engine PTO drive, jackshaft drive, hy-...

  • Page 75: Fuel Lines And Clamps

    - blades do not stop in Neutral-Park five (5) seconds - adjust or repair the brake before operating the mower. Contact your Walker dealer for With the mower parked on level ground, start and this service or refer to ADJUSTMENTS for Clutch...

  • Page 76: Safety Switch System

    FSC lever should move back with a slight ing or operating, a safety interlock switch may be amount of resistance (friction). If the FSC lever malfunctioning. Contact your Walker dealer for trou- movement is “stiff”, the friction needs to be bleshooting and/or replacement.

  • Page 77: Replacing/Repairing

    Maintenance Instructions REPLACING/REPAIRING REPLACING/REPAIRING Drive Belts There are four (4) individual belts on GHS models DANGER or three (3) belts on SD models: ● Jackshaft Drive Belt To prevent accidental starting of the en- gine when replacing parts or repairing the ●...

  • Page 78: Engine Pto Drive Belt

    Maintenance Instructions REPLACING/REPAIRING Raise the clutch lever (engage position) to Engine PTO Drive Belt (3 Groove Power Band) lift the clutch idler away from the belt. To remove the engine PTO drive belt: Next remove the belt from the engine pulley Remove the jackshaft drive belt from its and then the PTO drive pulley.

  • Page 79: Jackshaft Drive Belt

    Maintenance Instructions REPLACING/REPAIRING Jackshaft Drive Belt Relax the belt by depressing the spring- To remove the jackshaft drive belt: loaded idler arm. Remove the engine PTO drive belt, as Roll the belt off the jackshaft pulley and described in previous section. remove.

  • Page 80: Ghs Blower Drive Belt

    Maintenance Instructions REPLACING/REPAIRING GHS Blower Drive Belt Remove the GHS blower drive belt tension by depressing the idler pulley on the tightener arm. Roll the belt off the blower pulley. Blower Drive GHS Blower Pulley Drive Belt Blower Pulley Depress Idler Pulley Down to Relax Belt Belt Tightener Idler Pulley...

  • Page 81: Hydrostatic Ground Drive Belt

    Maintenance Instructions REPLACING/REPAIRING Hydrostatic Ground Drive Belt To remove the hydrostatic ground drive belt: Slide belt off pulleys, then release the idler. Raise the spring-loaded belt tightener arm and idler pulley to relax belt. Jackshaft Belt Tightener Arm Idler Pulley Transmission Drive Pulley Spring...

  • Page 82: Fuel Filter

    Expand and slide clamps on either side of the filter away from filter and pull fuel lines off filter. Model T23 is equipped with an in-line fuel filter. Vi- Replace filter, making sure that the arrow on the sually inspect the filter periodically, and replace the filter is aligned with the fuel flow through the filter yearly.

  • Page 83: Blade Overload Shear Bolts

    After reinstalling the blade, check blade timing (on gear driven decks) by moving blades through one (1) complete revolution. Make sure blade tips pass clear of each other. If timing is incorrect, con- tact your Walker dealer. Cutting Blade Shear Bolts Cutting Blade Shear Bolts...

  • Page 84: Mower Blades

    Since sand and abrasive material can wear ING/SERVICING in this section. If blades are re- metal away in this area, the blade should be re- placed, always use Walker original equipment placed when metal thickness has worn to blades to ensure safety and optimum performance.

  • Page 85: Adjustments

    Maintenance Instructions ADJUSTMENTS ADJUSTMENTS Set FSC Travel Limits (Stop) - Step 1 Transmission Control The following instructions reflect the most current transmission linkage configuration with a spring/ dampener connected to the steering lever and the FSC using direct linkage instead of a sliding fork disconnect (starting S/N 15-134121).

  • Page 86: Set Maximum Forward

    Maintenance Instructions ADJUSTMENTS Set Maximum Forward Travel Speed (Stop) - Step 2 Position the FSC lever to the most FORWARD position. Turn the steering lever adjustment nut(s) until Control 2 or 3 threads are showing past the end of the nut.

  • Page 87: Straight Ground Travel Adjustment

    Maintenance Instructions ADJUSTMENTS Straight Ground Travel Adjustment - Step 4 Sit in the seat, start the engine (operate at normal speed), and with the FSC in the NEUTRAL- PARK position check for forward movement of either drive wheel (if either wheel moves back- ward, refer back to Neutral Function Adjustment - Step 3 and readjust).

  • Page 88: Blade Clutch (Pto)

    Maintenance Instructions REPLACING/REPAIRING Blade Clutch (PTO) Adjust the bolt head clearance [1/4 to 3/8 in. (6.35 to 9.53 mm)] first (clutch engaged), then adjust Clutch Engagement/Belt Tension uncompressed spring length (clutch disengaged). The spring must be adjusted to an uncompressed The clutch engagement and PTO belt tension are overall length of 2-1/8 in.

  • Page 89: Clutch Disengagement/Brake Action

    Maintenance Instructions REPLACING/REPAIRING The declutched or disengaged position of the Clutch Disengagement/Brake Action blade clutch idler pulley is adjustable and is set to give belt release without excessive slack and to WARNING apply the blade brake. The blade brake is activated by the brake actuator rod linkage to the clutch idler pulley mechanism.

  • Page 90: Stop Block Eccentric Adjustment

    Maintenance Instructions ADJUSTMENTS Use the following procedure to check and adjust Clutch Idler Pulley Travel Adjustment - Step 2 clutch disengagement and brake action: Adjust the stop block to give 1 to 1-1/2 in. (25 to Stop Block Eccentric Adjustment - Step 1 38 mm) pulley travel from “clutch engaged”...

  • Page 91: Blade Brake Band Adjustment

    Maintenance Instructions ADJUSTMENTS NOTE: The length of the actuator rod is adjusted by Blade Brake Band Adjustment - Step 3 disconnecting the bottom clevis and shortening or After the pulley travel is set, make the following ad- lengthening accordingly. The standard pre-set justment as needed: length of the actuator rod is set at the factory at 8-1/4 in.

  • Page 92: Forward Speed Control Friction Lock

    Maintenance Instructions ADJUSTMENTS Forward Speed Control Friction Lock With the steering levers held back, move the FSC lever back from the FORWARD position. The FSC friction lock is adjusted to hold the se- With a proper amount of friction adjusted, the lected forward speed when the steering levers are FSC lever should move back with a slight moved.

  • Page 93: Steering Handles

    Maintenance Instructions ADJUSTMENTS Steering Handles Tilt-Up Deck Adjustable Stop An adjustment range of approximately 3 in. (76 mm) When the carrier frame hinge joint is properly ad- is available on the steering handles - the handles justed, the deck lock levers should move in and out can be adjusted forward or aft depending on the arm of the engaged and disengaged positions freely.

  • Page 94: 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 95: Warranty

    (1) year* after date of sale to the original retail purchaser 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, transpor- tation charges prepaid.
  • Page 96 WALKER MFG. CO. • 5925 E. HARMONY ROAD, FORT COLLINS, CO 80528 • (970) 221-5614 FORM NO. 100317 PRINTED IN USA www.walkermowers.com ©2017 WALKER MFG. CO...

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