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Walker Rider Lawnmowers MBS26 Owner's Manual

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OWNER'S MANUAL
Safety, Assembly, Operating, and Maintenance Instructions
and ILLUSTRATED PARTS MANUAL
Model MBS26 (26 HP)
Model MBS (27 HP)
C
™
Please Read and Save These Instructions
Effective Date: 09-15-10
For Safety, Read All Safety and Operation
P/N 2000-2
Instructions Prior to Operating Machine

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Summary of Contents for Walker Rider Lawnmowers MBS26

  • Page 1 OWNER’S MANUAL Safety, Assembly, Operating, and Maintenance Instructions and ILLUSTRATED PARTS MANUAL Model MBS26 (26 HP) Model MBS (27 HP) ™ Please Read and Save These Instructions Effective Date: 09-15-10 For Safety, Read All Safety and Operation P/N 2000-2 Instructions Prior to Operating Machine...
  • Page 2 (970) 221-5614, for clarification before operating or servicing this mower. This manual covers Model MBS26 with Kohler CH26 (26 HP) Electronic Fuel Injection (EFI) gasoline engine or optional Kohler Command CH740 (27 HP) gasoline engine.

  • Page 3: Table Of Contents

    Table of Contents Owner’s Manual Oil Pressure Warning Light _____________ 27 Engine Service Light (Model MBS26 Only) _ 27 General Information Over Temperature Warning Light ________ 27 ________________ 1 Transaxle Lockout Rods _______________ 28 HIGHLIGHTED INFORMATION _____________ 1 Hourmeter ___________________________ 28...
  • Page 4 Engine/PTO Belt _____________________ 57 WIRING SCHEMATIC (MODEL MBS26) _____ 96 Ground Drive Belt ____________________ 58 WIRING SCHEMATIC (MODEL MBS) _______ 98 Fuel Filter - Model MBS26 ______________ 59 Fuel Filter - Model MBS ________________ 59 Warranty _____________________ Mower Blades ________________________ 59...

  • Page 5: General Information

    General Information HIGHLIGHTED INFORMATION • TRACTOR is the prime mover, including the en- gine, drive train, operator seat, and controls to Walker Manufacturing recommends that any ser vice operate the mower. requiring special training or tools be performed by an authorized Walker Mower Dealer.

  • Page 6: Engine Serial Number Location

    General Information Serial Number Serial Number Tractor Serial Number Location Engine Serial Number Location SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS Serial Number The detailed servicing and repair of the engine and transaxle are not covered in this manual. Only rou- tine maintenance and general service instructions are provided.

  • Page 7: Specifications

    Specifications MODEL MBS26 ENGINE Manufacturer/Model Kohler Command CH740, Kohler Command Pro ® 2 Cyl. OHV (Air-Cooled) CH26, 2 Cyl., Gasoline (Air- Cooled), Electronic Fuel Injection (EFI) Displacement 44.0 cu. in. (725 cc) 44.0 cu. in. (725 cc) HP (@ 3600 RPM) 27.0...
  • Page 8 Specifications MODEL MBS26 TRANSMISSION Manufacturer/Model Dual, Independent Hydro-Gear Dual, Independent Hydro-Gear Integrated Transaxles Integrated Transaxles Steering Hand Lever Control / Individual Hand Lever Control / Individual Wheel Wheel Forward Speed Control Precision Friction Lock Lever, Precision Friction Lock Lever, Cruise Control, with Neutral-...
  • Page 9 Specifications MODEL MBS26 TIRE PRESSURE Deck Caster Wheel 20 PSI (137 kPa) 20 PSI (137 kPa) Drive 15 PSI (103 kPa) 15 PSI (103 kPa) Rear 20 PSI (137 kPa) 20 PSI (137 kPa) DIMENSIONS (Tractor and Mower) Length 100-1/4 in. (255 cm) 100-1/4 in.

  • Page 10: Component Identification

    Component Identification NOTE: Control Identification shown in Operating Instructions section. Body Lift Handle Tilt-Up Latch Counterweight Spring and Protective Cover Forward Speed Control (FSC) Deck Support Arm Friction (Not Visible) Adjustment Tilt Bar Footrests Deck Height Deck Handle Adjustment Trigger (Not Visible) Deck Support Arm (Not Visible)
  • Page 11 Component Identification Footrests Tailpipe Footrest Catch Assembly Left Hand Fuel Tank Fuel Pickup Drive Wheel and Cap Line Spread Muffler Tail Wheel Battery (Not Visible) Rear View and Left Side View...
  • Page 12 Reservoirs Fuel Return Line Fuel Tank Fuel Tank Cap Fuel Filter Air Intake Hose Fuel Pump (Not Visible) Air Intake Plenum Fuel Selector Valve Oil Fill/ Dipstick Muffler Heat Shield Rubber Bumpers (Body Support) Top View (Body Raised) Model MBS26...
  • Page 13 Component Identification LH Transmission Steering Levers RH Transmission Control Arm Dampeners Control Arm RH Transaxle LH Transaxle RH Transaxle LH Transaxle Lockout Rod Lockout Rod Parking Brake PTO Clutch Lever Cummins/Fleetguard Parking Brake OptiAir™ Air Cleaner Linkage Air Filter Cover Transaxle Fuel Pickup Line Expansion...

  • Page 14: Safety Instructions

    Safety Instructions Pay particular attention to any information labeled Walker Manufacturing cannot predict every poten- DANGER, WARNING, CAUTION, IMPORTANT, tially dangerous situation. Therefore, items labeled and NOTE in this manual. as such in this manual do not cover all conceivable situations.

  • Page 15: Operating

    Safety Instructions 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- spe cifically instructed to do so.
  • Page 16 Safety Instructions In case the transmission drive belt breaks during operation, and if the machine is on a slope, the   DANGER machine will freewheel down the slope. To main- tain control, immediately (1) Release the steer- Do not mow or dump grass within 5 feet (1.5 ing levers and simultaneously (2) Move the FSC meters) of an embankment or retaining wall to the NEUTRAL-PARK position.

  • Page 17: Maintenance

    Safety Instructions 18. If the cutting blades strike a solid object or the Never attempt to disconnect any safety devices machine begins vibrate abnormally, or defeat the purpose of these safety devices. immediately disengage the blade clutch Do not change the engine governor settings or (PTO), stop the engine, and wait for all moving overspeed the engine.

  • Page 18: Safety, Control, And Instruction Decals

    CHECK EVERY 8 HOURS OF USAGE Deck Housing (2724-7) LH Fender (2802-1) RH Fender (2802-2) Model MBS Only LH Fender (2802-3) Deck Carrier Frame (8647) Model MBS26 Only Deck Carrier Frame (8653) Rear Body, Center Body Behind Above Muffler (5805) Transaxles (9804) On Engine (6810)
  • Page 19 The Decal Part Number is listed below and in the Parts Section. Deck Housing, DSD60 (2749-2) Deck Housing, DRD52 (2749-1) Rear Body, Underside (2107-4) Front Body Adjacent to RH Steering Lever, MBS26 (2807-2) Deck Housing (8653-1) Front Body Adjacent to Deck Carrier Frame (2748) RH Steering Lever, MBS (2807-1)

  • Page 20: Assembly Instructions

    Charge battery. Refer to Battery Charging in this section.   CAUTION Dry Battery Service Important Battery Service, Installation, and Changing Tips for MBS26:   DANGER • Do not allow the battery cables to touch opposing terminals. When connecting bat- Activating a battery can be dangerous. The...

  • Page 21: Battery Charging

    Make sure the battery charger is un- plugged before connecting or disconnect- ing cables to the battery. IMPORTANT: On MBS26 models, always discon- nect the negative (-) battery terminal before charging. Failure to do so can result in damage to the ECU.

  • Page 22: Deck Discharge Shield Installation (Dsd60)

    Assembly Instructions Deck Discharge Shield Installation (DSD60) Tilt-Up Roller Wheel Installation Attach the deck side discharge shield by positioning Mount the two (2) tilt-up roller wheels on the brackets the shield hinge lug in front of the deck mount and on the rear skirt of the deck housing using the fastening with two (2) 3/8-16 x 1-1/4 in.
  • Page 23 Assembly Instructions Retract spring-loaded coupler ring on the PTO Slide the deck the rest of the way on the deck Tube (provided in Owner’s Packet) and insert arms. coupler tool. Refer to Quick Coupler Installa- tion Tool photo. Quick Coupler Installation Tool PTO Tube Deck Support...
  • Page 24 Assembly Instructions 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 Counter- weight Spring Installation photo.) With the counterweight springs connected, the weight on the deck caster wheels should be 15 to 25 Ib (6.8 to 11.3 kg);...

  • Page 25: Deck Leveling

    Assembly Instructions Deck Leveling Check the side-to-side level. Rotate the out side blades sideways and measure the distance Position mower on a smooth, level surface. Set from blade tip to ground on each side. the cutting height to the highest position - 5 in. measurements vary more than 1/8 in.

  • Page 26: Preoperating Checklist

    Assembly Instructions PREOPERATING CHECKLIST CHECK ENGINE CRANKCASE OIL LEVEL Before operating the mower for the first time, and as Check the engine crankcase oil level before use and a routine before daily operations, it is important to after each 8 hours of continuous operation. Refer to make sure the mower is properly prepared and ready LUBRICATION for Checking Engine Crankcase Oil for operation.
  • Page 27 Assembly Instructions CHECK TIRE PRESSURE   CAUTION Deck Caster Wheel = 20 PSI (137 kPa) Drive 15 PSI (103 kPa) Do not operate machine with locking arms Rear 20 PSI (137 kPa) disengaged. CHECK FUNCTION OF SAFETY INTERLOCK SWITCHES Refer to Operating Instructions to check for proper operation of safety switches, both during engine   DANGER starting and with the operator leaving the seat with...

  • Page 28: Operating Instructions

    Operating Instructions CONTROL IDENTIFICATION, LOCATION, AND seconds. If the engine does not start, return the key FUNCTION to the “O” position for at least 60 seconds before mak- ing a restart attempt. Prolonged cranking can damage the starter motor and shorten battery life. Release the   CAUTION key when the engine starts, and it will return to the RUN position.

  • Page 29: Engine Choke (Model Mbs Only)

    Operating Instructions Engine Choke (Model MBS Only) Body Latch The choke control lever (black knob) is located on the The front portion of the tractor body hinges forward left side of the seat. To start a cold engine, move the for maintenance access and is latched down in the choke control forward to the ON position.

  • Page 30: Steering Levers

    Operating Instructions Steering Levers Each drive wheel is controlled by its own indepen dent steering lever, for both steering function and FOR- WARD/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 with a full...

  • Page 31: Oil Pressure Warning Light

    (if a low oil pressure condition exists). • Low oil level in crankcase Engine Service Light (Model MBS26 Only) Stop the engine and correct the source of the problem before further operation. The engine service light indicates the Engine Control...

  • Page 32: Transaxle Lockout Rods

    Operating Instructions Transaxle Lockout Rods Hourmeter The hourmeter, which is located on the right front of The transaxle lockout rods disengage the transax les. the body, displays operating time accumulated while By lifting the rods up and locking them into place with the ignition switch is in the ON position.
  • Page 33 Operating Instructions The Forward Speed Control also Establishes the Neutral-Park Position of the Steering Levers FORWARD SPEED LEFT WHEEL RIGHT 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: Starting The Engine

    Operating Instructions STARTING THE ENGINE 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   CAUTION position and allow a 60 second cool-down period between starting attempts.
  • Page 35 Operating Instructions   WARNING Beginning Recommendations are: ♦ Learn operation of the mower in an open In case the transmission drive belt breaks area away from buildings, fences, and ob- during operation, and if the machine is on structions. Learn operation on flat ground a slope, the machine will freewheel down BEFORE operating on slopes.

  • Page 36: Engaging The Mower

    Operating Instructions ENGAGING THE MOWER Pull Steering Set the engine throttle at about 1/3 speed. Do Levers with not attempt to engage the blade clutch at high Left Hand engine speeds. This will drastically shorten drive belt life. Use only moderate engine speed Keep Feet on when engaging the blade clutch.

  • Page 37: Stopping The Machine

    Operating Instructions 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. Engage the parking brake. Also, engaging the parking brake is recommended when stopping or parking the machine in a confined space with little tolerance for movement.

  • Page 38: Fuel Selector Valve

    On the Model MBS26 the valve is located on the left Disengage PTO and stop tractor. hand side of the engine. On the Model MBS the valve is located on the right hand side of the engine.

  • Page 39: Transaxle Lockouts

    Operating Instructions TRANSAXLE LOCKOUTS RECOMMENDATIONS FOR MOWING IMPORTANT: DO NOT TOW this mower with the   DANGER transmission lockout engaged. Towing can produce excessive internal pressure and damage the transaxle(s). Do not mow around overhanging tree To move the mower with the engine NOT running branches or bushes at the same height as (dead battery, maintenance, etc.), the transaxles are the operator’s torso and head where inad-...
  • Page 40 Operating Instructions • When mowing, operate the engine at or near full Discharge throttle for the best cutting action. Mowing with a Shield lower engine RPM causes the mowing blade to not cut clean and tear the grass. The engine is designed to be operated at full speed.

  • Page 41: Recommendations For Tilt-Up Deck Operation/Transport

    Operating Instructions RECOMMENDATIONS FOR TILT-UP DECK   DANGER OPERATION/TRANSPORT To avoid potential deck and/or tractor damage while Do not mow or dump grass within 5 feet using the tilt-up deck, the following recommenda tions (1.5 meters) of an embankment or retain- are offered: ing wall with drop off.

  • Page 42: Maintenance Instructions

    Maintenance Instructions   CAUTION Maintenance procedures requiring special training or tools should be performed by a trained technician. MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTERVALS - MODEL MBS26 AND MBS Every Ref. Service Item Daily Hours Hours Hours Hours Yearly 2 Years...

  • Page 43: Important Tips For Care Of The Kohler Engine

    Operate the engine at full speed when mowing. • This allows the engine to produce full horsepower and On the Model MBS26, the fuel system is pressur- move more cooling air through the engine cool ing fins. ized. Do not attempt to service this fuel system. Con-...

  • Page 44: Lubrication

    Maintenance Instructions LUBRICATION LUBRICATION IMPORTANT: DO NOT operate engine without sufficient oil supply in the crankcase. DO NOT operate with oil level below the LOW mark or   WARNING above the FULL mark on the dipstick. DO NOT attempt to lubricate the machine with the engine running.
  • Page 45 Maintenance Instructions LUBRICATION Remove the dipstick and oil drain plug, and drain Install the new oil filter on the engine. Turn the oil into a suitable container. Be sure to allow oil filter clockwise until the rubber gasket con tacts ample time for complete drainage.

  • Page 46: Mower Deck Spindle Lubrication

    Maintenance Instructions LUBRICATION Mower Deck Spindle Lubrication Transaxle Oil and Filter Change Change the transaxle oil after the initial break-in pe- These spindles are permanently sealed and require riod of 75-100 hours. Thereafter, change oil every no lubrication. 400 hours of operation as follows: DRD52 or DSD60 Mower Deck Lubrication Thoroughly clean the exterior of the transmis sion housing before servicing.

  • Page 47: Grease Fitting And Oil Point Lubrication

    Maintenance Instructions LUBRICATION Fill both reservoirs to 1/4-1/2 in. (6-13 mm) with Grease Fitting and Oil Point Lubrication 20W-50 (API Service Class SL or higher) oil. Lubricate the grease fittings and oil points after every 25 hours of operation. Lubricate more often when Start and drive the unit for 1- 2 minutes.
  • Page 48 Maintenance Instructions LUBRICATION Ident Lubrication Ident Lubrication Location Type Places Location Type Places Deck Caster Wheel Fork Pivot Grease PTO Clutch Lever Pivot Grease Deck Caster Wheel Bearing Grease Clutch Arm Pivot Grease Deck Belt Tensioner Pivot Grease Transaxle Oil Reservoir Oil Front Deck Lift Pivot Grease Throttle Control Cable Ends Oil Rear Deck Lift Pivot Grease Choke Control Cable Ends Oil Pivot Assembly, Tilt-Up Deck Grease (Model MBS Only) Deck Support Arm Socket Grease Tail Wheel Caster Fork Pivot Grease Steering Lever Pivot Grease Rear Wheel Pivot...
  • Page 49 Maintenance Instructions LUBRICATION 20 & 29 21 & 28 Chassis and Deck Lubrication Points...

  • Page 50: Cleaning

    Maintenance Instructions CLEANING CLEANING IMPORTANT: Use only Cummins/Fleetguard air filter elements for replacement (Walker 2090-1 or 2090-3). Aftermarket filters may not seal properly or   CAUTION filter efficiently. If a pressure washer is used on the exposed working parts, avoid water on the electrical Canister parts and the engine cooling system.
  • Page 51 Maintenance Instructions CLEANING Without removing, visually inspect the condition Air Restriction of the safety filter for damage or holes. The Gauge safety filter should only be removed for yearly replacement (or when dirty or damaged). Check the condition and resilience of the radial sealing surface (inside of the open end) of the filter.

  • Page 52: Engine Cooling System

    Maintenance Instructions CLEANING 10. Install the cover with the word “DOWN” properly oriented to the bottom of the canister. Twist the OptiAir™ cover to the right and put into the “closed” position. Mono Latch Twist Lock™ Rotating Engine Screen Keep Engine Screen Clean DOWN Cylinder Head Cooling Fins It is essential for performance and longevity of the...

  • Page 53: Grass Buildup In Mower Housing

    Maintenance Instructions CLEANING Every 100 hours, inspect and clean the cooling fins Grass Buildup in Mower Housing (more often when operating in extremely dusty, dirty conditions). Remove the two (2) cooling fin access   DANGER panels in the engine shroud and clean the cooling fins and external surfaces using compressed air.
  • Page 54 Maintenance Instructions CLEANING Using the tilt bar, raise deck to the TILT-UP posi- Reinstall footrest by inserting locking fingers un- tion and insert the deck hook into the tilt-up latch der deck plate and reattaching hood latch as- on the tractor body. sembly.

  • Page 55: Transaxle Cooling Fins

    Maintenance Instructions CLEANING Transaxle Cooling Fins IMPORTANT: In case an oil leak develops on the input shaft, the cooling fan blowing dusty air and oil Keeping the cooling fins on the transaxles clean and on the transmission will quickly pack the cooling fins free of obstruction is essential to avoid overheating with oily dirt.

  • Page 56: Checking/Servicing

    CHECKING/SERVICING CHECKING/SERVICING   CAUTION   DANGER Important Battery Service, Installation, and Changing Tips for MBS26: To prevent accidental starting of the en- gine when servicing or adjusting the ma- • Do not allow the battery cables to touch chine, remove the key from the ignition opposing terminals.

  • Page 57: Cleaning The Terminals

    Maintenance Instructions CHECKING/SERVICING Cleaning the Terminals Wheel Nuts Torque Check every 100 hours the eight (8) Drive Tire If battery terminals are corroded, remove battery mounting nuts. They should each be torqued to 75 from the mower. Using a wire brush, remove corro sion ·...

  • Page 58: Drive Belts

    Mower Blade Profile for Sharpening Fuel Lines and Clamps NOTE: The MBS26 system is pressurized and should be serviced by a Walker dealer or Authorized Kohler engine service outlet. Every year, inspect the fuel lines from the tanks to engine for deterioration or damage.

  • Page 59: Pto U-Joints

    Maintenance Instructions CHECKING/SERVICING • PTO U-Joints With an operator in the seat, the engine starts with the Forward Speed Control (FSC) and/or the PTO The PTO U-joints should be inspected yearly for engaged. looseness and wear. If either is noticed, the respective shaft or tube should be replaced.

  • Page 60: Replacing/Repairing

    Maintenance Instructions REPLACING/REPAIRING REPLACING/REPAIRING Drive Belts There are four (4) individual belts on the machine:   DANGER • Engine/PTO Belt [Matched Set (3)] • To prevent accidental starting of the Ground Drive Belt engine when replacing parts or repairing The belts may be removed and replaced using the the machine, remove the key from the procedures described on the following pages.

  • Page 61: Engine/Pto Belt

    Maintenance Instructions REPLACING/REPAIRING Engine/PTO Belt Relax belt by depressing idler arm. To remove the engine/PTO belt: Roll the belt off the pulley and remove the Remove wire lock pins (4), open belt belt. guards. Idler Arm Wire Lock Pins Upper LH Right Hand Guard Guard...

  • Page 62: Ground Drive Belt

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

  • Page 63: Fuel Filter - Model Mbs26

    DO NOT smoke while or dirty conditions. Because the MBS26 has a pres- working with fuel. surized fuel system, fuel filter replacement should be •...

  • Page 64: Adjustments

    Maintenance Instructions REPLACING/REPAIRING/ ADJUSTMENTS ADJUSTMENTS   DANGER Transmission Control When blades are operated over sandy soil, IMPORTANT: The proper adjustment of the tran saxle and if blades are allowed to wear, a “slot” control stops is essential for efficient operation and may be worn into the wing tip of blade.

  • Page 65: Steering Handles Adjustment

    Maintenance Instructions ADJUSTMENTS Adjust the position of the RH lever by turning the Neutral Position Adjustment - Step 3 stop bolt in the Speed Control Actuator in or out. With the Forward Speed Control (FSC) in NEU- Turning the stop bolt in will make the RH lever TRAL, the lever should be straight up.

  • Page 66: Full Forward Speed Adjustment

    Maintenance Instructions ADJUSTMENTS NOTE: If the engine will not start, check and ad just the neutral safety switch (refer to FSC Switch - Neutral Adjustment - Step 6). With the FSC in the NEUTRAL position and the en gine running, the wheels should not move. If a drive tire is moving, the Control Rod on that side is out of adjustment.

  • Page 67: Straight Tracking Adjustment

    Maintenance Instructions ADJUSTMENTS Neutral Travel End T-Handle Hex Wrench Neutral Travel End (Shown with Parts Removed for Clarity) Straight Tracking Adjustment - Step 5 Neutral Travel End Adjust Sit in the seat, start the engine, set throttle at full speed, and with the FSC in the NEUTRAL-PARK FSC Switch - Neutral Adjustment - Step 6 position check for movement of either drive wheel (if either wheel moves backward or for ward, refer...

  • Page 68: Forward Speed Control Friction Adjustment

    Maintenance Instructions ADJUSTMENTS Forward Speed Control Friction Adjustment - Step 7 FSC Position with Levers 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.

  • Page 69: Blade Clutch (Pto)

    Maintenance Instructions ADJUSTMENTS Blade Clutch (PTO) Adjust the length of the clutch rod to achieve a bolt head clearance of 1/4 in. to 5/16 in. (6.35 mm to Clutch Engagement/Belt Tension 7.94 mm) with the clutch engaged. To adjust length: remove ball joint from clutch arm, shorten the clutch The clutch engagement and PTO belt tension are ad- rod to decrease this measurement or lengthen the...

  • Page 70: Clutch Disengagement/Brake Action

    Maintenance Instructions ADJUSTMENTS Clutch Disengagement/Brake Action Use the following procedures to check and adjust clutch disengagement and brake action:   WARNING Idler Pulley Maximum Travel Adjustment - Step 1 Loosen the brake band adjustment nut allowing stop It is important to check and maintain blade arm and stop nut to make contact (refer to Blade brake action for safe operation of the ma- Brake Band Adjustment illustration).

  • Page 71: Blade Brake Band Adjustment

    Maintenance Instructions ADJUSTMENTS/ ELECTRICAL SYSTEM Blade Brake Band Adjustment - Step 2 After the maximum pulley travel is set, adjust the working travel of the clutch idler pulley by adjusting the brake band nut and make the following adjust- ment as needed: Blade Brake Adjust the blade brake band, using the adjust- Band...

  • Page 72: Tractor And Deck Decals

    LOcatiOn nO. nO. nO. rEq’d sd Walker product and Operation decals 2802-2 RH Fender Body, RH near Seat 2010-4 Fuel Transfer (MBS) Transfer Mount, RH 2010-5 Fuel Transfer (MBS26) Transfer Mount, LH 5800-6 Decal, Walker 6-3/4" Rear Body (one on each side) 2802-1 LH Fender (MBS) Body, LH near Seat 2802-3 LH Fender (MBS26) Body, LH near Seat 9804 Axle Lockout Chassis 5856 Made in USA Body 5803 Walker Manufacturing Logo Body 2748 Cutting Height Adjustment Carrier Frame 5800-5 Decal, Walker 8"...
  • Page 73 tractOr and dEcK dEcaLs Effective Date 09-15-10 Use only genuine Walker replacement parts. ®...

  • Page 74: Body / Chassis Assembly

    Body & seat assembly 2430 Deck Support Arm, RH 2103-1 Seat (Includes Item # 24) 2105-1 Rear Body (Includes Item # 3) deck arm adapter Kit 2105-2 Rear Body, MBS26 (Includes Item # 3) 2431-1 Deck Arm Adapter, LH (Includes Item # 24) 1 2190-1 Insulation Foam Pad 5775-2 Hitch Pin (#6) 5845 Rubber Bumper (1.50 x 1.25) 2430-1 Deck Arm Adapter, RH (Includes Item # 24) 1 5146 10mm Ball Stud 2744-2 Counter Weight Spring Extension 2145 Gas Spring 2744-4 1/4" Quick Link...
  • Page 75 BOdY / cHassis assEmBLY F029 F020 F341 F029 F236 F004 F342 F093 F005 F342 F004 15 16 F025 F246 16 15 F005 F050 F004 F236 F183 F009 29 F256 F219 F009 F002 F034 F009 F034 F009 F218 Refer to F344 F031 F004 Main Component F348 Power Transmission F442...

  • Page 76: Main Component Power Transmission

    main cOmpOnEnt pOWEr transmissiOn itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d ptO drive assembly 5214-2 Ball Joint (5/16-24) (Nylon Lined) 7226 Compression Spring (3/4 x 2-1/2) 4850 Handle Grip, Black 7380 Knuckle Joint 2358-1 Clutch Lever, MBS (Includes Items # 1 & 3) Fasteners 5830-3 Grease Fitting (45 Deg.) F004 1/4-20 Keps Nut 4303-7 Clutch Actuator Bolt (5/16) F008 5/16-24 Keps Nut 2306-2 Oilite Flanged Bushing F009 5/16-18 Whiz Locknut 5830 Grease Fitting F010...
  • Page 77 MAIN COMPONENT POWER TRANSMISSION Refer to Engine Group (Model MBS26 or MBS) F004 F473 F031 F009 F024 F049 F049 F035 F060 F009 F024 F060 F031 F298 F058 F010 F034 F009 F031 F178 F035 F058 F009 F031 F058 F034 F061 F241...

  • Page 78: Engine Group (Model Mbs26)

    EnGinE GrOUp (mOdEL mBs26) itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d Fuel tank assembly precleaner assembly 8046-11 Fuel Tank, 4.7 Gallon, Gas 7840 Hose Clamp (1-5/16 to 2-1/4) (Includes Item # 3) 2012-1 Air Intake Hose 5082-2 Fuel Cap Seal 2088-10 Air Cleaner Assembly 5082 Fuel Tank Cap (Includes Items # 38-43) (Includes Item # 2) 5091-4 Air Flow Indicator 5083-1 Bushing, Rubber (Fits 5083) 2088-1 Air Cleaner Band 5879-5 Stepless Ear Clamp (5/8)
  • Page 79 EnGinE GrOUp (mOdEL mBs26) F025 F031 F025 F009 F002 Refer to Electrical Assembly F004 (Model MBS26) F002 F184 F185 F031 F034 F185 F184 Engine F026 F002 F002 F026 F002 F002 F026 F009 Refer to Hydrostatic Ground Drive Assemblies F184 F185 F050 F005 F164...

  • Page 80: Engine Group (Model Mbs)

    EnGinE GrOUp (mOdEL mBs) itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d Fuel tank assembly choke and throttle assemblies 8046-11 Fuel Tank, 4.7 Gallon, Gas 2109-4 Control Cable (62") (Includes Item # 3) 2108-4 Control Cable (68") 5082-2 Fuel Cap Seal 8123 Insulating Sleeve (3/8 x 6) 5082 Fuel Tank Cap 5108-1 Control Lever, Throttle / Choke (Includes Item # 2) 5108-5 Throttle Control Knob, Red 5083-8 Tank Tube (13") 5108-11 Friction Washer (.062) 5083-1 Bushing, Rubber (Fits 5083) 5108-6 Choke Control Knob, Black...
  • Page 81 EnGinE GrOUp (mOdEL mBs) F025 F025 F009 F002 F002 To Engine F184 F031 F185 F034 F185 F184 F009 Refer to Hydrostatic Ground Drive Assemblies F184 F185 F050 F005 F164 F201 F185 F184 F026 F002 F025 F004 F002 F002 F026 F002 F175 F439 Refer to Body / Chassis Assembly Effective Date 09-15-10...

  • Page 82: Hydrostatic Ground Drive Assemblies

    HYdrOstatic GrOUnd driVE assEmBLiEs itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d parking Brake assembly 2349-1 Hydro Idler Arm (Includes Items # 50 & 52) 1 2358-6 5/16-18 x 1-3/4 Stud 5830-3 Grease Fitting (45 Deg.) 2300-2 Parking Brake Hydro Mount, RH 7201-5 Inner Race (2-1/4) 5103-2 Pivot Bushing (5/16 ID) 7201-3 Fiberglide Bearing 2406-3 Parking Brake Actuator Tube 2300-5 Spring Mount Plate 5222 Extension Spring (1/2 x 3-1/4) 2028-3 Hydro Lockout Rod, LH 2280 Clevis (3/8) 9430-1 Spacer Tube...
  • Page 83 HYdrOstatic GrOUnd driVE assEmBLiEs F179 F050 Refer to F050 Engine Group F005 (Model MBS26 or MBS) F029 F029 F306 F435 F029 F336 Refer to F183 Main Component F050 Power Transmission F031 F009 F012 F231 F004 F050 F004 F009 F050 F171 F004 F035 F211...

  • Page 84: Steering Control Assemblies

    stEErinG cOntrOL assEmBLiEs itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d steering Lever & Fsc assemblies transmission spring assemblies 5862 FSC Knob 4199 Transmission Spring Assembly 4170 FSC Lever Assembly (Includes Items # 37-43, F004, F211, (Includes Item # 4) F320 & F352) 2170-1 Step Washer 4552 Ball Joint (1/4-28) 5830 Grease Fitting 5194 Plunger Sleeve 5214-5 Ball Joint (5/16-24/LH) W/O Stud 5192-2 Spring Plunger (Female) 4213 Control Rod (6-1/4) 5193 Washer (3/4 x 1 x .085) 5214-4...
  • Page 85 STEERING CONTROL ASSEMBLIES Refer to Hydrostatic Ground F009 Drive Assemblies F059 F386 F183 F427 F093 F373 F146 F008 F093 F024 F183 F373 F391 F167 F009 F049 F035 F044 F009 F004 Refer to Hydrostatic Ground F385 F024 F008 13 Drive Assemblies F345 F198 F009...

  • Page 86: Electrical Assembly (Model Mbs26)

    ELEctricaL assEmBLY (mOdEL mBs26) itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d Electrical assembly 5933 Battery Terminal Insl., Red (+) 5932 Battery Terminal Insl., Blk (-) 8960-15 Ignition Switch W/Keys 5844 Battery Hold-Down Bar (Includes Items # 2, 3 & F349) 2910-1 Battery Shield 7854 Plastic Tip, Red 5839 Hook Bolt 8960-3 Key Set W/Umbrella 8941 Circuit Breaker (30 Amp) 7941-3 Boot, Circuit Breaker (Auto Reset/Sealed) 7941-6 Circuit Breaker (15 Amp)
  • Page 87 ELEctricaL assEmBLY (mOdEL mBs26) Refer to Body / Chassis F349 Assembly F019 F050 F004 F050 F050 F004 Refer to Engine Group F031 (Model MBS26) F026 F002 F026 Refer to F026 Body / Chassis Assembly F002 F002 F009 F232 F002 F034 F002 F026 F002...

  • Page 88: Electrical Assembly (Model Mbs)

    ELEctricaL assEmBLY (mOdEL mBs) itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d Electrical assembly 5933 Battery Terminal Insl., Red (+) 5932 Battery Terminal Insl., Blk (-) 8960-15 Ignition Switch W/Keys 5844 Battery Hold-Down Bar (Includes Items # 2, 3 & F349) 2910-1 Battery Shield 7854 Plastic Tip, Red 5839 Hook Bolt 8960-3 Key Set W/Umbrella 8941 Circuit Breaker (30 Amp) 7941-3 Boot, Circuit Breaker (Auto Reset/Sealed) 7941-6 Circuit Breaker (15 Amp) 5833 Cable Clamp (1/4) 8990-1...
  • Page 89 ELEctricaL assEmBLY (mOdEL mBs) Refer to Body / Chassis Assembly F349 F019 F050 F004 F050 F050 F004 F031 F026 F002 F026 Refer to F026 Body / Chassis Assembly F002 F002 F009 F232 F002 F034 F002 F026 F002 F026 F026 F002 F002 F026 Refer to Body / Chassis Assembly DETAIL A...

  • Page 90: Inch Complete Carrier Frame Assembly

    60 incH cOmpLEtE carriEr FramE assEmBLY (p/n 2911-1) itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d spring and pivot mount components 2214-10 Rod End, Female (3/8-24) 2722-3 Pivot Shaft 2744-1 Spring Clip Bracket 2655 Lift Chain 5975-3 Cable Tie (50# x 7") 4407-4 Bow Tie Cotter Pin 5743-1 Spring Cover 2215-4 Height Adjustment Rod 5743-6 Extension Spring (1-1/2 x 7-3/4) 5146 10mm Ball Stud (Includes Items # 2, F117 & F166) 2215 Gas Spring Assembly 5743-3 Eye Bolt (3/8-16 x 2) 2721 Lifting Arm (Includes Item # 8)
  • Page 91 60 incH cOmpLEtE carriEr FramE assEmBLY (p/n 2911-1) F090 F050 F090 F050 F166 F132 F035 F050 F117 F009 F014 F040 F241 F013 F241 F009 F438 F048 F117 F241 F014 F215 F009 F090 F050 F013 F009 F215 F071 F241 F090 F013 F048 F241 F132 F050 F013 F298 F039 F050 F071 F436...

  • Page 92: Dsd60 Deck Assembly

    dsd60 dEcK assEmBLY (p/n 2910-5) itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d deck Housing components 2245-1 Idler Pulley 2245-5 Idler Pulley Assembly 2110 Hood Latch Assembly (Includes Items # 37, 38, 47 & F445) 2786-4 Locking Finger 5830 Grease Fitting 2786-3 Rubber Mat (2 x 7) 2724-6 Belt Tensioner Clevis 2786-2 Rubber Mat (7 x 9-1/2) 8655-4 Clevis Pin (5/16 x 3/4) 4845 Rubber Bumper (1.0 x .625) 4407-4 Bow Tie Cotter Pin 2786-5 Footrest, DSD60 (Includes Items # 3 & 4) 1 7201-3 Fiberglide Bearing...
  • Page 93 dsd60 dEcK assEmBLY (p/n 2910-5) F031 F004 F025 F009 F004 F031 F025 F002 F028 F043 F002 F025 F009 F051 F002 F108 F241 F005 F050 F049 F029 F034 F276 F276 F013 F458 F458 F002 F045 F318 F075 F435 F045 F445 F034 F067 F041 F013 F013 F041 F031 F075...

  • Page 94: Inch Complete Carrier Frame Assembly

    52 incH cOmpLEtE carriEr FramE assEmBLY (p/n 2911-4) itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d spring and pivot mount components 2214-10 Rod End, Female (3/8-24) 2722-4 Pivot Shaft 2744-1 Spring Clip Bracket 2655 Lift Chain 5975-3 Cable Tie (50# x 7") 4407-4 Bow Tie Cotter Pin 5743-1 Spring Cover 2215-4 Height Adjustment Rod 5743-6 Extension Spring (1-1/2 x 7-3/4) 5146 10mm Ball Stud (Includes Items # 2, F117 & F166) 2215 Gas Spring Assembly 5743-3 Eye Bolt (3/8-16 x 2) 2721-3 Lifting Arm (Includes Item # 8)
  • Page 95 52 incH cOmpLEtE carriEr FramE assEmBLY (p/n 2911-4) F132 F050 F090 F050 F166 F090 F035 F050 F117 F009 F014 F009 F013 F438 F241 F241 F040 F048 F117 F009 F014 F241 F132 F215 F013 F050 F009 F215 F241 F071 F090 F241 F048 F013 F050 F090 F013 F039 F298 F050 F071 F436...

  • Page 96: Drd52 Deck Assembly

    drd52 dEcK assEmBLY (p/n 2910-6) itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d deck Housing components 2724-6 Belt Tensioner Clevis 8655-4 Clevis Pin (5/16 x 3/4) 2786-5 Footrest, DRD52 (Includes Items # 2 & 3) 1 4407-4 Bow Tie Cotter Pin 2786-3 Rubber Mat (2 x 7) 5830 Grease Fitting 2786-2 Rubber Mat (7 x 9-1/2) 7201-3 Fiberglide Bearing 2786-4 Locking Finger 7201-5 Inner Race (2-1/4) 5221-1 Extension Spring (3/4 x 5) 2110 Hood Latch Assembly 2724-12 Idler Arm (Includes Item # 44)
  • Page 97 drd52 dEcK assEmBLY (p/n 2910-6) F025 F031 F004 F009 F028 F025 F004 F031 F002 F002 F043 F051 F025 F002 F108 F009 F241 F049 F050 F034 F276 F029 F013 F458 F276 F458 F002 F075 F435 F445 F034 F041 F045 F013 F013 F051 F276 F041 F025 F075 F458 F241...

  • Page 98: Mulching Kit

    mULcHinG Kit itEm part dEscriptiOn nO. itEm part dEscriptiOn nO. nO. nO. rEq’d nO. nO. rEq’d mulching Kit Fasteners 7705-16 Blade, 21" Low Lift F004 1/4-20 Keps Nut 2691-7 Left Hand Baffle F029 1/4-20 x 1/2 Hex Bolt F048 1/2 SAE Washer 2691-6 Center Baffle F265 1/2-20 x 1-1/2 Hex Bolt 2691-8 Right Hand Baffle replacement parts. Use only genuine Walker Effective Date 09-15-10 ®...
  • Page 99 mULcHinG Kit F029 F029 F029 F029 F029 F029 F004 F048 F265 F029 F029 F004 F004 F029 F004 F048 F265 F004 F004 F048 F265 F029 F004 F004 F004 Effective Date 09-15-10 Use only genuine Walker replacement parts. ®...

  • Page 100: Wiring Schematic (Model Mbs26)

    WirinG scHEmatic (mOdEL mBs26) RED/YEL RED/YEL RED/YEL BLK/WHT TO J3/J4 TO J4 TO J3 TO J20 TO J20 TO J20 TO J1 TO J1 TO J2 TO J3 TO J8 TO J5 TO J8 DIAGNOSTIC TEST PLUG SERVICE DEPT. ONLY TO J10 TO J11 replacement parts.
  • Page 101 30 AMP CIRCUIT BREAKER CYLINDER HEAD TEMP SWITCH PUR/RED PUR/RED FUEL RELAY - C PUMP SWITCH PUR/RED SEAT WALKER MODEL MBS26 PUR/RED SWITCH BLK/ Beginning S/N 2009-102141 PUR/ RED/WHT IGNITION SWITCH CIRCUITS J1/J2 J12/J13 RED/ G + M START B + A / S1 + S2...

  • Page 102: Wiring Schematic (Model Mbs)

    WirinG scHEmatic (mOdEL mBs) BATTERY STARTER STARTER SOLENOID PUR/YEL TIME PUR/RED ENGINE DELAY MODULE MAGNETO REGULATOR OIL PRESSURE SWITCH RELAY - A OIL TEMP SWITCH 30 AMP CIRCUIT BREAKER CYLINDER HEAD TEMP SWITCH PUR/YEL RELAY - B PUR/RED PUR/RED SWITCH RELAY - C BLK/ SEAT SWITCH...

  • Page 103: Warranty

    LIMITED WARRANTY WALKER MODEL MBS26 AND MBS RIDER MOWER WHAT THIS WARRANTY COVERS, AND FOR HOW LONG: Walker Manufacturing company will, at its option, repair or replace, without charge, any part covered by this warranty which is found to be defective in material and/or workmanship within one (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.
  • Page 104 Sound - Model MBS Vibration - Model MBS Sound Test Vibration Level Vibration levels at the operators handles were measured in the vertical, lateral, and 0.2g Sound test conducted was in accordance longitudinal directions using calibrated with 2000/14/EC and was performed on 6 vibration test equipment.

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