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Walker MBK23, Operator'S Manual

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Table of Contents

CLEANING

 ____________________________ 46

Engine Air Cooling System

 _____________ 46

Cylinder Head Cooling Fins

  ____________ 47

Engine Air Cleaner System

  _____________ 48

Cummins/Fleetguard OptiAir™  

Air Cleaner

 _________________________ 48

Grass Buildup in Mower Housing

 ________ 50

Transaxle Housing

 ____________________ 51

CHECKING/SERVICING

 __________________ 52

Security of Air Cleaner System

 __________ 52

Battery

 ______________________________ 52

Electrolyte Level

 _____________________ 52

Cleaning the Terminals

 ________________ 53

Charging the Battery

 __________________ 53

Tire Pressure

 _________________________ 53

Wheel Nut Torque

 _____________________ 53

Sharpen Mower Blades

  ________________ 53

Drive Belts

 ___________________________ 54

Mower Deck Gearbox Oil Seals

 __________ 54

Spark Plugs

 __________________________ 55

Ignition Wires

 ________________________ 55

Fuel Lines and Clamps

 _________________ 55

Blade Brake Action

 ____________________ 55

PTO U-Joints 

 ________________________ 55

Engine Starter

 ________________________ 55

Safety Switch System

__________________ 55

Forward Speed Control Friction Lock

 _____ 56

REPLACING/REPAIRING

 _________________ 56

Drive Belts

 ___________________________ 56

Engine/PTO Belt

 _____________________ 57

Ground Drive Belt

 ____________________ 58

Fuel Filter

  ___________________________ 59

Blade Overload Shear Bolts

_____________ 60

PTO Shear Pin

 ________________________ 60

Mower Blades

 ________________________ 61

ADJUSTMENTS

 ________________________ 62

Transmission Control

__________________ 62

Steering Lever Position Adjustment

  ______ 62

Steering Handles Adjustment

 ___________ 63

Neutral Position Adjustment

 ____________ 63

Full Forward Speed Adjustment

 _________ 65

Straight Tracking Adjustment

  ___________ 65

FSC Neutral Switch Adjustment

 _________ 65

Forward Speed Control 

Friction Adjustment

 ___________________ 66

Blade Clutch (PTO)

 ____________________ 67

Clutch Engagement/Belt Tension

 ________ 67

Clutch Disengagement/Brake Action

  _____ 68

Idler Pulley Maximum Travel Adjustment

  __ 68

Blade Brake Band Adjustment

  __________ 69

Tilt-Up Deck Adjustable Stop

 ____________ 69

Operator’s Notes

 _______________

70

Warranty

 _____________________

71

Summary of Contents for MBK23

Page 1: ...bly Operating and Maintenance Instructions Model MBK23 Please Read and Save These Instructions Beginning S N 116942 For Safety Read All Safety and Operation Effective Date 04 20 12 Instructions Prior to Operating Machine P N 4000 5 ...

Page 2: ...r or others If any thing in this manual is confusing or hard to understand please contact your local authorized dealer or call our service department at 970 221 5614 for clarification before operating or servicing this mower This manual covers Model MBK23 with the Kohler Command Pro ECH680 23 0 HP Electronic Fuel Injection EFI gasoline engine All shields and guards must be in place for the proper ...

Page 3: ...___________________ 22 PREOPERATING CHECKLIST_ _____________ 23 Operating Instructions______________ 26 CONTROL IDENTIFICATION LOCATION AND FUNCTION _ _____________ 26 Ignition Switch________________________ 26 Engine Throttle________________________ 27 Forward Speed Control FSC ____________ 27 Blade Clutch PTO _____________________ 27 Steering Levers_______________________ 27 Oil Pressure Warning...

Page 4: ...____ 55 Engine Starter_________________________ 55 Safety Switch System__________________ 55 Forward Speed Control Friction Lock_ _____ 56 REPLACING REPAIRING_ _________________ 56 Drive Belts_ ___________________________ 56 Engine PTO Belt______________________ 57 Ground Drive Belt_____________________ 58 Fuel Filter_ ___________________________ 59 Blade Overload Shear Bolts_____________ 60 PTO S...

Page 5: ...EFT HAND LH refers to the left hand side of the tractor when the operator is seated facing forward in the tractor seat POWER TAKE OFF PTO transmits engine power to run the cutter blades RIGHT HAND RH refers to the right hand side of the tractor when the operator is seated facing forward in the tractor seat SIDE DISCHARGE SD discharges mowed material from the right side of the mower deck STEERING L...

Page 6: ...riod it is important to find a local authorized servicing agent of the component manufacturer Any unauthorized work done on these components during the war ranty period may void the warranty If you have any difficulty finding an authorized outlet or obtaining warranty service please contact our Service Depart ment for assistance Walker Manufacturing Company 5925 E Harmony Road Fort Collins CO 8052...

Page 7: ...ing System Air Cooled Air Cleaner Remote mounted Cummins Fleetguard OptiAirTM Walker P N 2090 1 Primary 2090 3 Safety Filter ELECTRICAL SYSTEM Battery 12 Volt 300 CCA Charging System Flywheel Alternator Charging Output 15 Amp DC Regulated System Polarity Negative Ground Ignition Electronic Capacitive Discharge Starter 12 Volt Electric Key Operated Solenoid Shift Interlock Switches Ignition Lockout...

Page 8: ...y Variable BLADE DRIVE PTO Shaft Quick Disconnect Splined Shaft with Two 2 High Speed U Joints Blade Drive Clutch and Brake Manual Belt Tightener Clutch and Band Brake Stops Blades within Five 5 Seconds of Disengagement TIRE SIZE Deck Caster Wheel 2 80 2 50 4 Pneumatic 4 Ply Deck Caster Wheel Optional 8 x 3 00 4 Foamed Rubber Drive 18 x 8 50 10 4 Ply Low Profile Rear 11 x 4 00 5 TIRE PRESSURE Deck...

Page 9: ... 230 With DML48 90 3 4 230 Width in cm Tractor Only 38 97 Tread Width 29 75 76 Side Discharge Deflector Shield Lowered or N A Raised With DSD36 41 1 2 105 37 1 4 95 With DSD42 49 1 2 126 43 109 With DSD42BD 49 1 2 126 43 109 With DSD48 56 142 50 1 2 128 With DSD52 63 1 2 161 56 142 With DSD56 64 1 2 164 59 5 151 With DML36 37 94 With DML42A 43 109 With DML42B 43 109 With DML48 49 125 Height in cm ...

Page 10: ...16510 5030 18980 5790 18340 5590 18220 5550 MULCHING DECKS MODEL DML36 DML42A DML42B DML48 Cutting Width in cm 36 91 42 107 48 122 Drive Type Gear Cutting Height in cm 1 3 to 4 10 in 1 2 1 Increments 7 Positions Blade Length in cm 19 48 22 56 21 22 53 56 25 64 Number of Blades 2 4 2 Deck Suspension Torsion Flex Frame with Counterweight Springs Maximum Blade RPM 3480 2900 2900 2900 Max Blade Tip Sp...

Page 11: ...d Deck Caster Wheels Counterweight Springs and Protective Covers Positive Battery Cable Deck Lift Handle Cutting Height Adjustment Deck Support Arm Not Visible Deck Support Arm Deck Support Pins and Height Adjustment Hitch Pins Tilt Up Deck Handle Tilt Up Latch Footrests Footrests Oil Pressure Warning Horn Not Visible Forward Speed Control FSC Friction Adjustment Body Tilt Up Latch Not Visible ...

Page 12: ...ification 8 Rear View and Left Side View Left Hand Drive Wheel Fuel Tank and Cap Muffler Tailwheel Fork and Wheel Tailpipe Footrests Fuel Pickup Line Cylinder Head Cooling Fins Spread Axle Tail Wheel Dipstick Oil Fill ...

Page 13: ...ody Support RH Transmission Control Arm LH Transmission Control Arm Steering Lever Dampening Springs LH Transaxle LH Transaxle Lockout Rod Parking Brake Linkage Air Cleaner Cover Latch Air Cleaner Cover Transaxle Oil Expansion Reservoir Fuel Tank Cap Parking Brake Linkage Fuel Filter Oil Fill Fuel Pump Air Filter Restriction Gauge Muffler Heat Shield Oil Cooler Oxygen Sensor ...

Page 14: ...ended by Walker Manufacturing must take full responsibility for safety The Walker Rider Lawnmower has been designed withmanysafetyfeaturestoprotecttheoperatorfrom personal harm or injury However it is necessary for the operator to use safe operating procedures at all times Failure to follow safety instructions con tained in this manual may result in personal in jury or damage to equipment or prope...

Page 15: ...e en gine should stop if the operator lifts off the seat with either the Forward Speed Control FSC out of the NEUTRAL PARK position or the PTO clutch in the ENGAGED position 10 Handle gasoline with care Gasoline is highly flammable and its vapors are explosive a Use an approved fuel container b Never add fuel to a running engine or hot engine allowhotenginetocoolseveralmin utes c Keep matches ciga...

Page 16: ...ARK position before starting the engine an ignition interlock switch normally prevents starting of the machine if these con trols are in the OPERATING position 7 Do not operate machine if the operator pres ence safety switch system is not working Verify proper operation by having the operator lift off the seat with the engine running and mov ing two controls one at a time 1 Move the FSC lever out ...

Page 17: ... seat b LOOK to make sure blade drive shaft movement has stopped before trying to un clog the system c Disconnect the spark plug wires d Never place hands under the deck use a stick or similar tool to remove clogged ma terial 18 If the cutting blades strike a solid object or the machine begins to vibrate abnormally immediately disengage the blade clutch PTO stop the engine and wait for all moving ...

Page 18: ...rsely affects its operation perfor mance durability or use will VOID the war ranty and may cause hazardous conditions 8 Never attempt to disconnect any safety devices or defeat the purpose of these safety devices 9 Do not change the engine governor settings or overspeed the engine The governor has been factory set for maximum safe engine operating speed 10 Use genuine factory replacement parts Sub...

Page 19: ...2 1 Warning rotating mower blades are a cutting dismemberment hazard to hands and feet Keep all body parts away from rotating mow er blades Do not step on end of deck 2 Warning thrown object hazard Keep bystanders away from the machine when operating Clear lawn of debris before operating Keep any discharge deflector in place and in the lowest position Location Deck Carrier Frame Part Number 8600 1...

Page 20: ...hrown object hazard Keep bystanders away from the machine when operating 6 Warning entanglement hazard Keep all guards in place while engine is run ning 7 Parking brake Move lever forward to engage Parking Brake back to disengage 1 Warning do not operate the machine without a deck or other implement attached 2 Forward Speed Control Move lever forward to increase speed back to stop 3 Warning readOp...

Page 21: ...n Engine Part Number 8600 12 1 Warning stop engine and remove ignition key before adjusting deck cutting height 1 Tighten blade nuts on gear driven decks to 60 lb ft 81 N m 1 Ground drive belt routing 2 Engine PTO clutch belt routing 1 Warning carbon monoxide CO poisoning hazard CO emitted by a running engine can be deadly Do not operate indoors or in other enclosed areas 1 2 Location Rear Body Ne...

Page 22: ...ng a battery can be dangerous The battery should be taken to a reliable service station battery store or power equipment dealer where a trained techni cian can activate the battery safely DO NOT attempt to activate the battery unless you are experienced in battery service work The following activation and charg ing instructions are provided for use by a trained battery technician DANGER Battery el...

Page 23: ...acer tube and spacer washers from each deck caster wheel fork NOTE Spacer washers are used only when the optional semi pneumatic deck wheels 8 25 x 2 75 are installed 2 Fit the axle spacer tube through the wheel hub position the spacer washer on each side of the hub if used and fit the assembly into the wheel fork 3 Insert the 3 8 16 x 4 1 2 in bolt through the wheel fork with the bolt head to the...

Page 24: ...tion of deck support arm 2 Engage the deck carrier frame tube sockets on the tractor support arms refer to PTO Shaft Guard Installation photo for socket location slide the deck onto the support arms approxi mately 3 in 76 mm 3 Retract the spring loaded quick disconnect ring on the PTO Coupler and insert the Coupler In stallation Tool provided in Owner s Packet as shown in the photo below NOTE The ...

Page 25: ...stall the hitch pin through the hole on the end of each support arm to lock the deck in place refer to Deck Counterweight Spring Installa tion photo Two 2 hitch pins are included in the Owner s Packet of materials 8 Raise the mower body instead of lifting the front of deck and clip the counterweight springs to the receptacle on front of body Lower the body to tension the springs Refer to Deck Coun...

Page 26: ...t to rear level Rotate the blades to point forward Measure the distance from bladetiptogroundonthefrontandrear Therear of the blade should be 1 8 to 1 4 in 3 to 6 mm higher than the front of the blade shim the rear or front deck support pins equally to achieve at least 1 16 in 2 mm difference NOTE The mower deck and support frame are jig welded within normal tolerances very little if any shimming ...

Page 27: ...container Fuel the mower outdoors DO NOT smoke while refueling Avoid spilling fuel use a funnel or spout DO NOT overfill the fuel tank fill up to about 1 in 25 mm below the top of tank IMPORTANT DO NOT permit dirt or other foreign matter to enter the fuel tank Wipe dirt from around the filler cap before removing Use a clean fuel stor age container and funnel IMPORTANT DO NOT mix oil with gasoline ...

Page 28: ...r leaving the seat with tractor moving forward or with the mower blades en gaged CHECK TIRE PRESSURE Deck Caster Wheel 20 PSI 137 kPa Drive 15 PSI 103 kPa Rear 20 PSI 137 kPa CHECK AND CLEAN GRASS BUILDUP UN DERNEATH MOWER DECK Refer to CLEANING the Grass Buildup in Mower Housing in Maintenance Instructions for deck tilt up and deck cleaning information DANGER Never operate cutter blades with deck...

Page 29: ...decks torqued to 70 lb ft 95 N m If blade sharpening is required refer to CHECKING SERVICING for Sharpen Mower Blades in MaintenanceInstructions ADJUST MOWER CUTTING HEIGHT IF RE QUIRED Position the hitch pins in the four deck support pins Refer to the Cutting Height Adjustment decal on the deck gearbox cover PERFORM ANY ADDITIONAL PROCEDURES called for on the MAINTENANCE SCHEDULE CHART in Mainten...

Page 30: ...starting and S is the START position When starting the engine turn the key clockwise to the S position Do not hold the key in the S position longer than 10 seconds If the engine does not start return the key to the O position for at least 60 seconds before making a restart attempt Prolonged cranking can damage the starter motor and shorten battery life Release the key when the engine starts and it...

Page 31: ...e PTO that drives the mower blades Pulling the lever UP disengages the PTO and engages the blade brake Steering Levers 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 pull...

Page 32: ...eased to permit free wheeling By releasing the rods and recessing them back toward the chassis the transaxles are engaged for normal operation The transaxle rods in the LOCKOUT position are used to enable mov ing the machine without the engine running e g for service Refer to TRANSAXLE LOCKOUTS in this section for operating instructions NOTE The transaxle lockout rods ends should be completely ret...

Page 33: ...nder one hour prior to the recommended interval and will continue until one hour after the recommended interval two hours The hourmeter does not have a manual reset function Procedure Interval Reminder Oil Change Break In 4 6 Hours C H G OIL Lubricate and Check Levels 24 26 Hours LUBE Oil Change 49 51 Hours C H G OIL These intervals reflect the actual time that the reminder will flash one hour pri...

Page 34: ...ard Speed Control also Establishes the Neutral Park Position of the Steering Levers Full Forward Ground Speed Position Reverse Drive Wheel Motion Position Neutral Park Position Fast Throttle Position Idle Position LEFT WHEEL STEERING LEVER FORWARD SPEED CONTROL LEVER FSC Neutral Park Position Intermediate Ground Speed Position Engaged Position Disengaged Position Engaged Position Disengaged Positi...

Page 35: ... safety switches they are for the operator s protection 2 Move the throttle 1 4 to 1 2 open toward FAST and turn the ignition switch to the START posi tion to start the engine Release the key to RUN position as soon as the engine starts IMPORTANT DO NOT crank the engine con tinuously for more than 10 seconds at a time If the engine does not start turn the key to the OFF position and allow a 60 sec...

Page 36: ...ntrol FSC Correct Operator Hand Position on the Controls 3 Reverse direction of the mower by pulling both levers backward Beginning Recommendations are Learn operation of the mower in an open area away from buildings fences and ob structions Learn operation on flat ground BEFORE operating on slopes Start maneuvering the mower with SLOW engine speed and SLOW Forward Speed Control setting until fami...

Page 37: ...osition Adjustment in the Maintenance Instructions ENGAGING THE BLADE DRIVE 1 Set the engine throttle at about 1 3 speed Do not attempt to engage the blade clutch at high engine speeds This will drastically short en drive belt life Use only moderate engine speed when engaging the blade clutch 2 Engage the blade clutch by moving the blade clutch lever forward SLOWLY For disengage ment move the blad...

Page 38: ...red or replaced before op erating the mower Contact your Walker dealer 4 Turn the ignition switch OFF WARNING Remove the key from the ignition switch when leaving the mower unattended This will prevent children and inexperienced operators from starting the engine 5 Engage the parking brake Also engaging the parking brake is recommended when stopping or parking the machine in a confined space with ...

Page 39: ...p the transaxle lockout rods on both the RH and LH transaxles and secure into place by shouldering both rods in the chassis notch area 3 The mower will freewheel with the rods in the LOCKOUT position The levers must be in the highest position to completely unlock the trans missions Hydro Lockout Rod Hydro Lockout Rod Freewheel Position 4 After moving the mower release the rods plac ing them in the...

Page 40: ...pass and then make a second pass cutting to the desired height Use a slow setting on the FSC for trimming op erations Make sure the mower is leveled properly for a smooth cut Refer to Deck Leveling in Assembly In structions Use an alternating stripe mowing pattern for best appearance and vary the direction of the stripe each time the grass is mowed to avoid wear patterns in the grass Avoid damage ...

Page 41: ... position since both the roller wheels on the back of the deck may be damaged by moving the tractor The tilt up configuration should only be used when the tractor is parked The tractor body should never be tilted for ward with the deck in the tilt up position This can cause the deck to unhook from the tractor and fall with considerable force potentially causing deck or tractor damage and or bodily...

Page 42: ...Check Air Filter Element x 49 Check Regap Spark Plugs x 55 Change Engine Crankcase Oil x 40 Change Engine Oil Filter x 40 Replace Fuel Filter x 59 Change Transaxle Oil and Filter x 42 Replace Air Filter Element x 49 Check FSC Friction Lock x 56 Check Fuel Lines and Clamps x 55 Service Solenoid Shift Starter x 55 Check PTO U Joints for Wear Looseness x 55 Service Battery x 52 Replace Fuel Lines and...

Page 43: ...Make sure to keep hands clear of exhaust pipe muffler and moving parts when checking airflow Operate the engine at full speed when mowing Thisallowstheenginetoproducefullhorsepowerand movemorecoolingairthroughtheenginecool ingfins Air Cleaner System Use only Cummins Fleetguard air cleaner elements Aftermarket elements may not seal in the air cleaner housing allowing dirt to enter the engine Also a...

Page 44: ...pstick clean the area around the dipstick to keep any dirt or debris out of the engine 3 Remove the dipstick wipe off with a clean rag then reinsert the dipstick into the tube and press all the way down 4 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 the L mark and the F mark IMPORTANT DO NOT operate en...

Page 45: ...until the rubber gasket contacts the sealing surface then tighten an additional 1 2 turn 8 Close the oil drain valve and tighten until snug Do not overtighten 9 Fill the crankcase with new clean oil Use only crankcase lubricants recommended by the en gine manufacturer Refer to Specifications in this manual or the engine owner s manual Use the recommended oil viscosity for the expected ambient temp...

Page 46: ...completely drained of oil approximately 5 fl oz 15 cl of oil per gearbox is required to refill the gear drive assembly NOTE Since the gearboxes are connected as a unit by connector tubes it is necessary to add oil slowly Allow a few minutes after adding oil for the oil to flow throughout the assembly and the oil level to stabilize before reassembly IMPORTANT DO NOT overfill the deck gear boxes The...

Page 47: ...llow purge instructions below 11 To purge air from transaxle raise unit and block with tires off the ground With engine running slowly move Forward Speed Control forward and backward 5 to 6 times Turn off engine and check oil level and add if needed Repeat pro cedure until transaxle operate at normal noise levels and move smoothly in forward and re verse Grease Fitting and Oil Point Lubrication Lu...

Page 48: ...8 Body Latch Pivot Oil 1 19 PTO Clutch Lever Pivot Grease 1 20 Transaxle Oil Reservoir Oil 20W 50 1 21 PTO Belt Tightener Pivot Grease 1 22 ClutchActuator Push Rod Grease 1 23 Tail Wheel Caster Fork Pivot Grease 2 24 RearAxle Pivot Grease 1 25 Rear Wheel Bearing Grease 2 26 Engine Dipstick Oil 1 27 Throttle Control Cable Ends Oil 2 28 Engine Oil Filler Oil 1 29 Parking Brake Clevis Oil 2 30 Parkin...

Page 49: ...Maintenance Instructions lubrication 45 Chassis and Deck Lubrication Points DSD42 Shown 1 11 12 7 4 4 13 14 15 29 30 29 5 1 2 12 4 5 4 16 27 31 21 2 22 18 20 16 19 28 27 26 17 23 24 23 25 ...

Page 50: ...ansion Reservoir Location CLEANING CAUTION If a pressure washer is used on the ex posed working parts avoid water on the electricalpartsandtheenginecoolingsys tem Engine Air Cooling System To prevent engine overheating and possible engine damage clean grass clippings chaff and dirt from the rotating engine air intake screen every 8 hours of operation In certain mowing conditions dry grass leaves t...

Page 51: ... Cooling System Airflow Every 100 hours inspect and clean the cooling fins more often when operating in extremely dusty dirty conditions Remove the two 2 cooling fin access panels in the engine shroud and clean the cooling fins and external surfaces using compressed air Make sure to reinstall the access panels before oper ating the engine IMPORTANT Yearly it is good maintenance prac tice to remove...

Page 52: ... air cleaner outlet to indicate when the air filter needs servicing a yellow indicator will show when the filter is overly restricting airflow into the engine IMPORTANT Use only Cummins Fleetguard air filter elements for replacement Walker 2090 1 and 2090 3 Aftermarket filters may not seal properly or filter efficiently IMPORTANT The Cummins Fleetguard air cleaner uses a dry paper type air filter ...

Page 53: ...or sharp edge Washing the element in water or cleaning solution is not recommended Do not try to clean the element with compressed air Remember replacing a fil ter is less expensive than replacing a dusted engine 4 Use a bright light inside the element to inspect for damage Check the element very carefully for pin holes or other damage that will allow dirt to leak through the paper media Replace e...

Page 54: ... filter restriction gauge press but ton on the end of the indicator Grass Buildup in Mower Housing DAnger Before raising or removing the mower deck for cleaning stop the engine re move the ignition key and disconnect the spark plug wires 1 Raise the deck lock lever handle on each side of the carrier frame and pull out to release car rier frame for tilting action 2 Using the carrier frame lift hand...

Page 55: ...s clean and free of obstruction is essential to avoid overheat ing the transmission fluid and shortening transmis sion life The housing should be checked every 100 hours and cleaned if necessary To clean the housing use compressed air and or a pressure washer Pay close attention to any oily dirt build up on the transaxle housings This may be the result of an oil leak If an oil leak is noticed cont...

Page 56: ... to the machine A hazard may be created by damage to critical working parts and safety sys tems CAUTION Important Battery Service Installation and Changing Tips for Electronic Fuel Injected Engines Do not allow the battery cables to touch opposing terminals When connecting bat tery cables attach the positive cable to positive battery terminal first followed by negative cable to negative battery te...

Page 57: ... 13 mm above the plates Tire Pressure Inflate tires to pressures shown below Deck Caster Wheel 20 PSI 137 kPa Drive 15 PSI 103 kPa Rear 20 PSI 137 kPa Wheel Nut Torque Check the eight 8 Drive Tire mounting nuts Every 100 hours they should each be torqued to 75 to 85 lb ft 102 to 115 N m Sharpen Mower Blades Check mower blade s for straightness sharp ness condition of the cutting edge and balance e...

Page 58: ...ained by removing an equal amount of material from each end of the blade when sharpening Blade Balancer Blade Balanced on Magnetic Wall Mounted Balancer 7 Mount the blade with wing tips pointing up into the housing For gear driven decks reinstall the blade washer lock washer and nut Tight en the nut to 60 lb ft 81 N m For belt driven decks reinstall the spacer if applicable blade washer and bolt T...

Page 59: ...y all rotation will stop five 5 seconds after disengagement of the clutch If the brake sys tem malfunctions blades do not stop in five 5 sec onds adjust or repair the brake before operating the mower Refer to ADJUSTMENTS for Clutch Disengagement Brake Action Step 2 Blade Brake Band Adjustment on page 69 PTO U Joints The PTO U joints should be inspected yearly for looseness and wear If either is no...

Page 60: ...djusted the FSC lever should move back with a slight amount of resistance friction If the FSC lever movement is stiff the friction needs to be decreased If the FSC friction lock needs to be adjusted refer to ADJUSTMENTS for Step 7 Forward Speed Con trol Friction Adjustment in this section REPLACING REPAIRING dANGER To prevent accidental starting of the en gine when replacing parts or repairing the...

Page 61: ... Open Engine Hidden for Clarity 2 To replace an engine PTO belt a Reverse the removal procedure to replace an engine PTO belt b Secure wire on lock pin above tab on lower PTO guard Engine PTO Belt Belt Guards Closed Engine Hidden for Clarity Engine PTO Belt Matched Set PTO Pulley PTO Guard Right Hand Guard Lower LH Guard Upper LH Guard Idler Arm Wire Lock Pins Wire Lock Pin Secure wire above tab P...

Page 62: ...elt off pulleys then release the idler Ground Drive Belt Assembly Disengaged 2 Reverse the procedure to install the ground drive belt Ground Drive Belt Assembly Engaged Depress Idler Pulley to Relax Belt Tension Spring LH Transaxle RH Transaxle Drive Pulley Idler Pulley Ground Drive Belt LH Transaxle RH Transaxle Drive Pulley Idler Pulley Ground Drive Belt ...

Page 63: ...is equipped with a 10 micron in line fuel filter between the fuel tank and the fuel pump module Replacement of this filter is recommended every 200 hours of operation or more frequently under extremely dusty or dirty conditions In Line Fuel Filter Fuel Filter Location IMPORTANT Replace the fuel filter only in a clean area where the fuel line and connections will not be contaminated by any dust and...

Page 64: ... drive shaft connection to the deck gearbox has a shear pin to provide shock load protection to the mower deck drive This system provides pri mary shock protection in case of blade impact and will normally shear before the individual shear bolts on the blade hub When the PTO pin has sheared use the following procedure to replace it 1 Loosen the two bolts securing the PTO shaft guard on the deck li...

Page 65: ... sandy soil and if blades are allowed to wear a slot may be worn into the wing tip of blade Eventually a piece of the blade may break off creating a serious potential for injury or damage Check the blades for straightness by marking blade tip position inside the deck housing and then rotating the opposite end of the blade to the same position and comparing If the difference in blade tip track is m...

Page 66: ...section Step 1 Steering Lever Position Adjustment NOTE For proper operation the steering levers should be adjusted to sit evenly using the following procedure 1 Examine the steering levers to make sure they are parallel front to back in relation to one an other If they are not equal adjust accordingly The handles may or may not be even at this point NOTE The LH steering lever is non adjust able Th...

Page 67: ...lding the handle in position in the adjustment slide Adjust the han dles into the most comfortable position and tighten both locknuts Adjustment Slide Locknut Position Locknut Pivot Point Steering Handles Adjustment Step 3 Neutral Position Adjustment 1 With the Forward Speed Control FSC in NEU TRAL PARK the lever should be straight up Adjust by loosening the jam nuts on the FSC Rod and turn the ro...

Page 68: ... the engine at normal operating speed check for movement of the drive wheels 5 Lift the body to access the steering adjustment components NOTE It may be necessary to tighten the FSC friction adjustment if the transmissions are moved out of neutral when the body is raised Refer to Step 7 Forward Speed Control Friction Adjustment later in this section for location of the FSC friction adjustment nut ...

Page 69: ...ves in a straight line use cement joint or other line on ground for refer ence 3 If travel is not straight shorten the control rod ontheslowsidebyturningtheadjusternutclock wise If straight tracking and neutral can not be achieved turn adjuster nut counterclockwise until neutral can be achieved 4 Lengthen the control rod of the faster side by turning the adjuster nut counterclockwise to match the ...

Page 70: ... in of the NEUTRAL PARK position If this distance is greater than 1 8 in the FSC Neutral Switch needs to be adjusted downward for quicker ac tivation Step 7 Forward Speed Control Friction Adjustment FSC Position With Levers 1 Place the FSC in the full FORWARD position and pull both steering levers back the FSC lever should not move If the FSC lever moves back the friction needs to be increased 2 W...

Page 71: ...clutch spring assembly bolt head clearance of 1 4 in to 5 16 in 6 35 mm to 7 94 mm with the clutch engaged To adjust length remove ball joint from clutch arm and shorten the clutch actuator link to increase this measurement or lengthen the clutch actuator link to decrease this measurement If adjustments are needed more frequently than every 100 hours to maintain dimensions it may suggest problems ...

Page 72: ...in five 5 seconds after disengaging the clutch Use the following procedures to check and adjust clutch disengagement and brake action Step 1 Idler Pulley Maximum Travel Adjustment Loosen the brake band adjustment nut allowing stop arm and stop bolt to make contact refer to Blade Brake BandAdjustment illustration 1 To check the pulley travel first engage the clutch then measure the distance the pul...

Page 73: ...ction as described in CHECKING SER VICING the Blade Brake Action in this section If blades do not stop within five 5 seconds check the following a Make sure clutch and brake linkage are working freely no binding b Check the brake band lining for wear c Checkthebrakedrumonthepulley Ifexces sive wear is present it will be necessary to replace worn parts Tilt Up Deck Adjustable Stop When the carrier ...

Page 74: ...70 Operator s Notes ...

Page 75: ...all pay any charges for making service calls and or for transporting the mower to and from the place where the inspection and or warranty work is performed 3 HOW TO OBTAIN SERVICE UNDER THIS WARRANTY Warranty service can be arranged by contacting the dealer where you purchased the mower or by contacting Walker Manu facturing Company 5925 East Harmony Road Ft Collins CO 80528 Proof of the date of p...

Page 76: ...WALKER MFG CO 5925 E HARMONYROAD FORT COLLINS CO 80528 970 221 5614 FORM NO 042012 PRINTED IN USA www walkermowers com 2012 WALKER MFG CO TM ...

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