Table of Contents
Related Manuals for Walker D21d
Summary of Contents for Walker D21d
- 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: 154575 Instructions Prior to Operating Machine P/N 7000-16...
- 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.
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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 Throttle ______________________ 28 SERVICING OF ENGINE AND Forward Speed Control (FSC) __________ 29... - Page 4 Table of Contents Maintenance Instructions Fuel Injection Nozzle Pressure __________ 74 __________ 56 Transmission Control Setting ___________ 74 MAINTENANCE SCHEDULE CHART _______ 56 Neutral-Park ________________________ 74 IMPORTANT TIPS FOR CARE Straight Ground Tracking ______________ 74 OF THE KUBOTA ENGINE ________________ 57 Blade Brake Action ____________________ 75 Fuel System _________________________ 57 PTO U-Joints _________________________ 75...
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Page 5: General Information
Most accidents associated with the opera tion or maintenance of a Walker Mower are caused ● SIDE DISCHARGE (SD) discharges mowed by disregarding basic safety precautions or specific material from the right side of the mower deck. -
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 assis Tractor Serial Number Location tance: Walker Manufacturing Company 5925 E. Harmony Road Fort Collins, CO 80528 Serial Number 1-970-221-5614 www.walker.com... -
Page 7: Specifications
Cooling Fan Electric Radiator Cooling Fan with Reversible Self-Cleaning Action Coolant 50/50 Pre-Mix Antifreeze/Water Air Cleaner Remote Mounted Donaldson Radialseal (Walker P/N 5090-1 Primary/5090-3 Safety Filter) ELECTRICAL SYSTEM Battery 12 Volt, 41AH, 340 CCA (Interstate U1-SP40) Charging System 40 Amp Automotive Alternator... -
Page 8: Blade Drive
Deck Caster Wheel* 20 (137) Drive 15 (103) Tailwheel 20 (137) * If equipped with optional pneumatic tires DRIVE BELTS Engine PTO Walker P/N 7230 Jackshaft Drive Walker P/N 6238 Ground Drive, Micro-V Walker P/N 7248 Blower (GHS Model) Walker P/N 7234-2... -
Page 9: Seat
Specifications MODEL D21d SEAT Full Spring Suspension with Dampening and Adjustments for Back Angle, Lumbar Support, and Operator Weight. Standard with Ad justable/Retractable Armrests. FRAME/BODY CONSTRUCTION Frame All Welded Unitized Steel Chassis Body 14 Gauge Steel Deck 11 Gauge Steel... -
Page 10: Dimensions (Tractor And Mower)
Specifications MODEL D21d DIMENSIONS (Tractor and Mower) Length in. (cm) 64.5 (164) Tractor Only 41 (104) Tractor Wheel Base 77 (196) Tractor with Tilted Deck (Approximate) 93 (236) Tractor with 48" Collection Deck (DC48-1) Width in. (cm) Tractor Only (Outside Tire) 39 (99) Tractor with 48"... -
Page 11: Component Identification
Component Identification NOTE: Control Identification shown in Operating Instructions section. Turbine Grass Handling System Precleaner 10.0 Bushel Catcher Tilt-Up Spring Clip Latch Counterweight Spring and Protective Cover Transmission Control Rod Adjustment Nut (LH) Deck Support Pins and Height Adjustment Anti-Scuff Hitch Pins Roller Tilt-Up... - Page 12 Component Identification Removable Grass Catcher Screen (Not Visible) Catcher Door Gas Spring Gas Spring Cover (Not Visible) Catcher Door Radiator Cap Radiator Catcher Lift / Dump Handle Instrument Panel Guard Catcher Instrument Panel Box Air Exhaust (Shock Mounted) Dump Flap Catcher Door Handle Anti-Scuff...
- Page 13 Component Identification Air Cleaner Cover Muffler Overflow Hose Tailpipe Donaldson Air Cleaner Radiator Cap Radiator Air Filter Restriction Gauge Radiator Guard Precleaner Tube Jackshaft PTO Gearbox Dipstick Engine Dipstick (Not Visible) GHS Blower Turbine Precleaner RH Hydrostatic Transmission RH Transmission Lockout Lever 40 Amp Neutral Safety...
- Page 14 Component Identification Oil Fill Water Temperature Starter Motor Below Exhaust Gauge Sender (Not Visible) Manifold Alternator Thermostat Housing and Thermostat Glow Plug(s) Fuel Pickup Water Pump Line Fan Motor Fuel Return Line Fuel Gauge Radiator Screen (Removable) Fuel Tank Radiator Fan and Shield Throttle Control Engine Stop Lever Linkage...
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Page 15: 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 16 Safety Instructions - Before Operating 6. Do not wear loose fitting clothing that could get Replace the machine fuel cap and contain caught in moving parts. Do not operate this ma er cap securely and clean up any spilled fuel chine while wearing shorts;...
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Page 17: 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 18 Safety Instructions - Operating 14. The maximum recommended slope operat- 20. In case of a clogged or plugged mower deck ing angle is 15 degrees or 27% grade. When or GHS catching system: operating the machine on a slope, reduce speed Disengage the blade clutch (PTO), engage and use caution to start, stop, and maneuver.
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Page 19: Maintenance
For ser vice of the pressurized fuel system, including the fuel pump, fuel lines, and fuel injectors, con tact your Walker dealer or authorized Kubota service dealer. Altering the equipment or engine in any manner... -
Page 20: 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 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. Location: Deck Discharge Shield (SD Decks Only) 8600-28...
- Page 22 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: Catcher Door Hinge Bar, LH and RH Sides Location: Front Body, RH Side Adjacent to...
- Page 23 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...
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Page 24: 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 25: 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 hold-down bar, disconnect in severe corrosion. -
Page 26: Deck Discharge Chute Installation
Assembly Instructions Insert the 3/8-16 x 4-1/2 in. bolt through the Deck Discharge Deflector Shield Installation wheel fork with the bolt head to the outside and (Side Discharge Models Only) install the 3/8-16 in. Keps nut. Attach the side discharge deflector shield using two Tighten the bolt and nut until the inner bearing (2) 3/8-16 x 1-1/4 in. -
Page 27: Tilt-Up Roller Wheel Installation
Assembly Instructions Tilt-Up Roller Wheel Installation Retract the spring-loaded quick disconnect ring on the PTO Coupler and insert the Coupler In Mount the two (2) tilt-up roller wheels on the brack stallation Tool (provided in Owner’s Packet) as ets on the rear skirt of the deck housing using the shown in the photo below. - Page 28 Assembly Instructions IMPORTANT: To prevent damage to the mow Install the hitch pin through the hole on the end of each support arm to lock the deck in place er, make sure the PTO quick disconnect is se curely locked on the tractor, with the locking (refer to Deck Counterweight Spring Installa- tion photo).
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Page 29: 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 30: 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 5 hours of continuous operation. Refer make sure the mower is properly prepared and to LUBRICATION for Checking Engine Crankcase ready for operation. - Page 31 Assembly Instructions CHECK HYDROSTATIC TRANSMISSION OIL Tilt-Up Hook and LEVEL Latch Connected Refer to LUBRICATION for Checking Hydrostatic Transmission Fluid Level in Maintenance Instruc Tilt-Up tions. Handle Tilt-Up Tilt-Up CHECK FUNCTIONS OF INSTRUMENT PAN Latch Hook EL AND WARNING HORN Turn the ignition key to the ON (RUN) position.
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Page 32: Operating Instructions
Operating Instructions CONTROL IDENTIFICATION, LOCATION, AND Engine Throttle FUNCTION The throttle control lever (red knob) is located on the Operating Controls left side of the seat and is used to control engine speed. Moving the lever forward toward the FAST position increases engine speed;... -
Page 33: Forward Speed Control (Fsc)
Operating Instructions Forward Speed Control (FSC) Parking Brake Forward Speed Control (FSC) has two functions: The parking brake functions by locking a pin into the One is to set forward travel speed, and the other is hydrostatic transmission pinion gear teeth. Moving to establish the NEUTRAL-PARK position. - Page 34 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 (No Control Change) Full Forward Ground Speed Position Neutral-Park Position Intermediate Ground Speed Position...
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Page 35: Front Body Latch Release
Operating Instructions NOTE: The transmission plunger on the side of the Front Body Latch Release transmission case (activated by the LOCKOUT LE- The front portion of the tractor body hinges forward VER) must be completely released during operation for maintenance access and is latched down in the of the mower, otherwise operation of the transmis... -
Page 36: Suspension Seat
A fully adjustable suspension seat is standard on operation of the switch is checked by having the op Model D21d. This seat is adjustable for back pitch, erator lift off the seat with the tractor moving forward weight, lumbar support and armrest inclination. - Page 37 Operating Instructions For Backrest adjustment, moving the adjustment For adjusting the height of the armrest, pry out the handle upwards loosens the notching of the back round cap (arrow) of the cover and loosen the hexa rest adjustment. Refer to Figure 3. gon nut (size 13mm) situated behind it.
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Page 38: Instrument Panel
Operating Instructions Instrument Panel This illustration shows the configuration of the switches and indicators located on the instrument panel. Water Temperature Oil Pressure Water Temperature Ignition Gauge Warning Light Warning Light Switch Voltmeter Circuit Breaker - 7 Amp Light Switch Hourmeter (Instrument Panel, Safety Switches, (Optional) -
Page 39: Hourmeter
*** In normal operating conditions, oil changes in horn) will come on when the ignition is turned ON, 100-hour intervals are acceptable. Walker and but should go off after the engine is started. If the the engine manufacturers recommend engine... -
Page 40: Water Temperature Warning Light/Horn
Operating Instructions Water Temperature Warning Light/Horn The water temperature warning light and horn indi Glow Plug Preheat cate that engine coolant temperature is above the ON (RUN) safe operating limit and the engine is overheating. If this light comes on, there may be a problem with: ●... -
Page 41: Starting The Engine
(3) parking brake disengaged. If the engine damage the starter motor and shorten battery cranks otherwise, the safety system is not life. Consult your Walker dealer or authorized working and should be repaired or ad justed Kubota dealer for additional help. -
Page 42: Adjusting Ground Speed And Steering
Refer to ADJUSTMENTS for FSC Friction Lock in Mainte nance Instructions or contact your Walker dealer. Steer by pulling the lever on the side of desired direction of turn, e.g., pull the LH lever to turn left. - Page 43 Control setting until familiar with all operat ing characteristics. ♦ Remember it is not necessary to hold the steering levers forward (a unique Walker feature); always PULL on the levers for Forward Speed Control steering or for reverse motion of the (FSC) mower.
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Page 44: Engaging The Blade Drive
PARK position, the transmission control needs to be adjusted. Refer to ADJUSTMENTS for Transmission Control and Neutral Function Adjustment in Mainte nance Instructions or con tact your Walker dealer. ENGAGING THE BLADE DRIVE Set the engine throttle at about 1/3 speed. Do Disengaged... -
Page 45: Stopping The Machine
DO NOT dis- should be adjusted or repaired before op- connect the safety switches; they are for erating the mower. Contact your Walker the operator’s protection. dealer, or refer to ADJUSTMENTS of Clutch Disengagement/Brake Action in... -
Page 46: Adjusting Cutting Height
Operating Instructions TRANSMISSION LOCKOUT WARNING IMPORTANT: DO NOT TOW this mower with the transmission lockout engaged. Towing can produce In case either of the transmission drive excessive internal pressure and damage the trans- belts break during operation, and if the mission. -
Page 47: Recommendations For Mowing
Operating Instructions ● Keep the mower deck and discharge chute Lockout Lever clean. Mow with sharp blades. A dull blade tears the ● grass (resulting in poor lawn appearance) and uses extra power (slowing the mowing speed). It is preferable to cut grass when it is dry and ●... - Page 48 Operating Instructions Maximum Recommended Discharge Slope - Do Not Operate Shield on Steep Slopes Side Discharge Deflector Shield in Lowest Position ● When operating on a slope, reduce speed and use caution to start, stop, and maneuver. Avoid sharp turns or sudden changes in direction. The 14 in.
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Page 49: 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 50: 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 PTO and Blade Gear Drive ®... -
Page 51: 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 52: 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 FORWARD will stop. Also, the mower deck will begin to leave a trail of grass clippings. -
Page 53: 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 GHS catcher has a “full” signal horn to alert the blower housing. A clearance greater than the operator to dump the catcher when it is full (to 1/8 in. -
Page 54: 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 55: 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 56: 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 57 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 58 Operating Instructions Catcher Door Upper Catcher Door Gas Spring Grass Catcher Cable Guide Lift Channel Power Dump Lower Ram Actuator Door Arm Fork Actuator Cable Guide Cable Assembly Spring Actuator Mount Assembly Dog Leg Assembly Rubber Bumper Power Dump Components...
- Page 59 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 Lift Rod Hydraulic Hydraulic Valve Block Reservoir/Power Unit Safety Lockout Arm...
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Page 60: Maintenance Instructions
Δ Change engine oil and filter after first 35 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 61: Important Tips For Care Of The Kubota Engine
(see following instructions). ● Model D21d is equipped with an electric fuel pump; therefore it is normally not necessary to ● Use the air filter restriction gauge to indicate the bleed air out of the fuel system (after running out need to service the air filter. -
Page 62: 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 lower mark or WARNING above the upper mark on the dipstick. If additional oil is needed, refer to Specifications DO NOT attempt to lubricate the machine for proper crankcase lubricant. -
Page 63: Grease Fitting And Oil Point Lubrication
Maintenance Instructions LUBRICATION Reinstall the drain plug. Make sure it is tight- · · ened to 10 lb ft (14 N Fill the crankcase with new, clean oil. Use only crankcase lubricants recommended by the en Specifications gine manufacturer. Refer to this manual or the engine owner’s manual. - Page 64 Maintenance Instructions LUBRICATION Ident Lubrication Ident Lubrication Location Type Places Location Type Places Deck Caster Wheel Fork Pivot Grease Brake Band Pivot Pin (Clevis) Deck Caster Wheel Bearing Grease Belt Tightener Pivot, Grease Δ Blade Spindle Grease PTO Clutch Pivot Assembly, Tilt-Up Deck Grease Throttle Control Cable Ends Deck Support Arm Socket...
- Page 65 Maintenance Instructions LUBRICATION 29 & 38 Chassis and Deck Lubrication Points (DC42 Shown)
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Page 66: 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 67: Mower Deck Spindle Lubrication
Maintenance Instructions LUBRICATION Changing Gearbox Oil Belt Drive Gearbox The tractor PTO gearbox is oil filled. No scheduled oil change is required. However, changing the oil af ter the first 100 hour break-in period will extend gearbox life and is recommended. Remove the drain plug in the bottom of the gearcase, drain the oil, and reinstall the plug. -
Page 68: Hydrostatic Transmission Fluid
Hydrostatic fluid level should be checked ev- need to be serviced by an authorized Walker dealer. ery 25 hours of machine operation. It is preferable When a transmission is found to be low on oil, it is to check the fluid when the fluid is cold. -
Page 69: 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 70: Donaldson Radialseal™ Air Cleaner
(Donaldson P822686 or placement. Walker 5090-1). Aftermarket filters may not seal properly or filter efficiently. Remove the filter element by pulling it out of the canister. There will be some initial resistance... -
Page 71: Engine Cooling System
Maintenance Instructions CLEANING Without removing, visually inspect the condition 10. Install the cover with the word “TOP” properly of the safety filter for damage or holes. The oriented to the top of the canister. Give the safety filter should only be removed for yearly cover a slight twist as it reaches the canister to replacement (or when dirty or damaged). -
Page 72: Flushing Radiator And Changing Coolant
Maintenance Instructions CLEANING NOTE: Directing pressurized air or water from Grass Buildup in Mower Deck Housing the fan side of the radiator outward is recom mended to dislodge material packed on the out DANGER side of the cooling fins. DO NOT use cold water on a hot radiator. -
Page 73: Ghs Blower
Maintenance Instructions CLEANING Lower the deck to the normal operating position GHS Blower Blower and re-engage the deck lock levers. Drive Belt Pulley Blower Drive Pulley CAUTION Do not operate machine with deck tilt-up pivot joint unlocked. GHS Blower Depress Idler Pulley Down to Relax Belt Normally, the GHS blower operates with no mainte- nance or cleaning. -
Page 74: Hydrostatic Transmission Cooling Fins
Maintenance Instructions CLEANING/ CHECKING/SERVICING Hydrostatic Transmission Cooling Fins CHECKING/SERVICING Keeping the cooling fins on the hydrostatic trans DANGER missions clean and free of obstruction is essential to avoid overheating the transmission fluid and short ening transmission life. The cooling fins should To prevent accidental starting of the en- be checked every 100 hours and cleaned if neces- gine when servicing or adjusting the ma-... -
Page 75: Alternator Belt Tension
Maintenance Instructions CHECKING/SERVICING Battery Alternator Belt Tension Check and adjust the alternator belt tension to avoid NOTE: For initial battery service during setup, re fer engine overheating and insufficient battery to Battery Service in Assembly Instructions. charging. Push on the belt in the middle of the span IMPORTANT: Make sure battery is securely mount... -
Page 76: Charging The Battery
Maintenance Instructions CHECKING/SERVICING Wheel Bolt Torque Charging the Battery Check the eight (8) lug bolts that mount the drive DANGER tires. Every 100 hours they should be torqued to · · 75 to 85 lb ft (102 to 115 N BATTERIES PRODUCE EXPLOSIVE GASES Sharpen Mower Blades ●... -
Page 77: Drive Belts
Maintenance Instructions CHECKING/SERVICING Check blade balance by positioning the blade WARNING horizontally on a blade balancer or use a nail or shaft through the center hole. If either end of the blade rotates downward, grind (remove) DO NOT try to straighten a blade that is metal on that end until the blade will balance. -
Page 78: Mower Deck Gearbox Oil Seals
Maintenance Instructions CHECKING/SERVICING Mower Deck Gearbox Oil Seals Fuel Injection Nozzle Pressure The mower deck gearbox seals should be inspected Check and adjust the Kubota diesel engine fuel in every 25 hours for evidence of oil leaking; particu- jection nozzle pressure yearly or every 1000 hours larly the lower oil seal on the blade drive gear- (or in case of low power). -
Page 79: Blade Brake Action
(5) seconds - adjust or repair the brake before Forward Speed Control Friction Lock operating the mower. Contact your Walker dealer for this service or refer to ADJUSTMENTS for Clutch The FSC friction lock is designed to hold the se- Disengagement/Brake Action in this section. -
Page 80: Replacing/Repairing
Maintenance Instructions REPLACING/REPAIRING REPLACING/REPAIRING Drive Belts There are five (5) individual belts on GHS models DANGER or four (4) belts on SD models: ● Jackshaft Drive Belt To prevent accidental starting of the en- gine when replacing parts or repairing the ●... -
Page 81: Engine Pto Drive Belt
Maintenance Instructions REPLACING/REPAIRING Engine PTO Drive Belt (3 Groove Power Band) To remove the engine PTO drive belt: Install the PTO drive belt by reversing the re moval procedure. Remove the jackshaft drive belt as de Refer to ADJUSTMENTS of Blade Clutch scribed in next section. -
Page 82: Jackshaft Drive Belt
Maintenance Instructions REPLACING/REPAIRING Jackshaft Drive Belt Slide the idler arm release down to unlock To remove the jackshaft drive belt: the idler arm from the spring lever. Then pivot the arm up and away from the belt. Relax the belt by releasing spring tension from the jackshaft drive idler arm using Roll the belt off the jackshaft pulley and the cold start lever. -
Page 83: 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 84: 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. Push down on the spring-loaded belt tight ener arm and idler pulley to relax belt. Belt Tightener Arm Jackshaft Spring Transmission... -
Page 85: Engine Alternator Belt
Maintenance Instructions REPLACING/REPAIRING Engine Alternator Belt To remove the alternator belt: Pivot the alternator as shown to relax and remove belt. Loosen the alternator mounting pivot bolt and the alternator bracket tensioner bolt. Alternator Bracket Tensioner Bolt Engine Alternator Belt Alternator Crankshaft Water Pump... -
Page 86: Fuel Filter
Maintenance Instructions REPLACING/REPAIRING Fuel Filter Blade Overload Shear Bolts Model D21d has two (2) fuel filters. Replace both NOTE: Blade shear bolts are not used on belt driv the in-line filter and the Kubota filter element yearly en decks. or every 400 hours of operation. -
Page 87: 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 88: Adjustments
Maintenance Instructions ADJUSTMENTS ADJUSTMENTS Levers should sit parallel to each other Transmission Control The following instructions reflect the most current transmission linkage configuration with a spring/ dampener connected to the steering lever (starting S/N 11-109716) and the FSC using direct linkage instead of a sliding fork disconnect (starting S/N 15-134121). -
Page 89: Set Maximum Forward
Maintenance Instructions ADJUSTMENTS Steering Lever Actuator Arms Forward Travel Stop Bolt Steering Adjustment Nut Transmission Control Arm Forward Speed Control Stop and Steering Lever Adjustment Jam Nut Tighten the jam nut on the forward travel stop Adjustment Control adjusting bolt. Set Maximum Forward Travel Speed (Stop) - Step 3 Position the FSC lever to the most FORWARD Transmission Control Rod and Arm Location... -
Page 90: Straight Ground Travel Adjustment
Maintenance Instructions ADJUSTMENTS Start the engine (operate first at idle and then At this point it may not be possible to adjust normal operating speeds) and check for move- both wheels stationary since the differential ad ment of the drive wheels. just has not been made. -
Page 91: Blade Clutch (Pto)
Maintenance Instructions ADJUSTMENTS Blade Clutch (PTO) Clutch Disengagement/Brake Action Clutch Engagement/Belt Tension WARNING The clutch engagement and PTO belt tension are adjusted using the clutch actuator rod. Initially, after It is important to check and maintain installing a new PTO belt, after 10 hours and every blade brake action for safe operation of 100 hours thereafter, check and adjust for the three the machine. -
Page 92: Forward Speed Control Friction Lock
Maintenance Instructions ADJUSTMENTS PTO Drive Engine Pulley Pulley Clutch Idler Pulley Actuator 1/2 in. Brake Band (13 mm) Adjustment Nut Friction PTO Clutch Disengagement Adjustment Washer Check both the brake band and brake drum on the drive pulley for wear. Replace worn Friction brake parts and readjust pulley travel as Adjustment Nut... -
Page 93: Steering Handles
Maintenance Instructions ADJUSTMENTS With the steering levers held back, move the Tilt-Up Deck Adjustable Stop FSC lever back from the FORWARD position. When the carrier frame hinge joint is properly ad With a proper amount of friction adjusted, the justed, the deck lock levers should move in and out FSC lever should move back with a slight 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... - Page 96 WALKER MFG. CO. • 5925 E. HARMONY ROAD, FORT COLLINS, CO 80528 • (970) 221-5614 FORM NO. 042619 PRINTED IN USA www.walker.com ©2019 WALKER MFG. CO...
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where is the transmission lockout lever