Walker MBSY Operator'S Manual Download Page 7

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Specifications

MODEL

MBSY

ENGINE

Manufacturer/Model

Yanmar 3TNM72, 3 Cyl., Diesel (Liquid Cooled)

Displacement

55.1 cu. in. (904 cc)

Max. Power HP (kW)

23.6 (17.4) @ 3600 RPM

Governed RPM

3600

Max. Torque ft-lb (N

40.9 (55.5) @ 2600 RPM

Idle RPM

1100 ± 25

Crankcase Capacity

3.1 qts (2.9 liters)

Crankcase Lubricant

API CD or Higher Grade Oil with 10W-30 Viscosity or

15W-40 Above 86° F (30° C)

Oil Filter

P/N 119305-35151

Fuel Tank Capacity

9.4 Gallons (35.6 liters), Two Independent 4.7 Gallon Tanks with

Selector Valve

Fuel

Diesel Fuel 2-D

Cooling System Capacity

7.0 qts (6.6 liters)

Cooling Fan

Electric radiator cooling fan with reversible self-cleaning action

Coolant

50/50 Pre-Mix Antifreeze/Water

Air Cleaner

Remote mounted Enginaire™ VLR

(Walker P/N 509

-1 Primary/5090-3 Safety Filter)

ELECTRICAL SYSTEM

Battery

12 Volt, 41AH, 340 CCA (Interstate U1-SP40)

Charging System

Automotive Type Alternator

Charging Output

40 Amp DC (Regulated)

System Polarity

Negative Ground

Ignition

Diesel with Glow Plugs

Starter

12 Volt Electric Ring-Gear Type, Solenoid Shift

Interlock Switches

Ignition Lockout by Seat Switch, Transmission Neutral and

Blade Clutch

Circuit Breaker(s)

Auto Reset (One 40A, Two 30A)

TRANSMISSION

Manufacturer/Model

Dual Hydrostatic Hydro-Gear

ZT3400 Integrated Transaxles

Steering

Hand Lever Control / Individual Drive Wheel

Forward Speed Control

Precision Friction Lock Lever, Cruise Control, with Neutral-Park

Position

Service Brake

Dynamic Braking through Transaxles

Parking Brake

Internal Mechanical Cog Lock for each Transaxle

(Single Lever Control)

Neutral

Transmission Release by Manual Dump Valve

Final Drive

Transaxle Direct to Drive Wheel

Summary of Contents for MBSY

Page 1: ...bly Operating and Maintenance Instructions Model MBSY Please Read and Save These Instructions Beginning S N 112057 For Safety Read All Safety and Operation P N 2000 4 Instructions Prior to Operating M...

Page 2: ...ers If anything 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 servi...

Page 3: ..._ 29 Battery Charge Light___________________ 29 Oil Pressure Warning Light______________ 29 Water Temperature Warning Light_ _______ 29 Transaxle Lockout Rods_ _______________ 30 Hourmeter____________...

Page 4: ...on Lock_ _____ 59 REPLACING REPAIRING_ _________________ 60 Drive Belts_ ___________________________ 60 PTO Belt____________________________ 61 Ground Drive Belt_____________________ 62 Alternator Bel...

Page 5: ...r is seated facing forward in the tractor seat POWER TAKE OFF PTO transmits engine power to run the cutter blades REAR DISCHARGE RD discharges mowed material from the back of the mower deck RIGHT HAND...

Page 6: ...ese components during the limited warranty period it is important to find a local authorized servicing agent of the com ponent manufacturer Any unauthorized work done on these components during the wa...

Page 7: ...e VLR Walker P N 5090 1 Primary 5090 3 Safety Filter ELECTRICAL SYSTEM Battery 12 Volt 41AH 340 CCA Interstate U1 SP40 Charging System Automotive Type Alternator Charging Output 40 Amp DC Regulated Sy...

Page 8: ...ive Clutch and Brake Manual Belt Tightener Clutch and Band Brake Stops Blades within Five 5 Seconds of Disengagement TIRE SIZE Deck Caster Wheel 13 x 5 00 6 Pneumatic 4 Ply Drive 22 x 10 50 12 4 Ply L...

Page 9: ...ischarge Width of Cut 52 in 132 cm 60 in 152 cm Cutting Height 1 to 5 in 3 to 13 cm Height Adjustment 17 Positions 1 4 in 0 6 cm Increments Blade Size 18 4 in 47 cm 20 5 in 52 cm Number of Blades 3 Di...

Page 10: ...k Caster Wheels Forward Speed Control FSC Friction Adjustment Deck Support Arm Not Visible Deck Height Lift Chain Deck Height Adjustment Trigger Tilt Bar Deck Handle Height Adjustment Arm Cutting Heig...

Page 11: ...Component Identification 7 Rear View and Left Side View Spread Axle Tail Wheel Left Hand Drive Wheel Footrests Fuel Tank and Cap Fuel Pickup Line Tailpipe Muffler...

Page 12: ...Transaxle RH Transaxle Parking Brake Fuel Tank Cap RH Transmission Control Arm Steering Levers Dampeners Rubber Bumpers Body Support PTO Clutch Lever Transaxle Oil Expansion Reservoirs Air Filter Cov...

Page 13: ...ommended by Walker Manufacturing must take full responsibility for safety The Walker Rider Lawnmower has been designed withmanysafetyfeaturestoprotecttheoperatorfrom personal harm or injury However it...

Page 14: ...seat with either the Forward Speed Control FSC out of the NEUTRAL PARK position or the PTO clutch in the ENGAGED position NOTE There is a 1 2 second time delay func tion on the seat switch to avoid en...

Page 15: ...theslope Tomain tain control immediately 1 Release the steer ing levers and simultaneously 2 Move the FSC to the NEUTRAL PARK position When the ma chine is stopped or moving slowly engage the parking...

Page 16: ...th deck in tilt up position b Never tilt body forward with deck in tilt up position 17 In case of a clogged or plugged mower deck a Disengage the blade clutch PTO set the parking brake and turn the en...

Page 17: ...t of the fuel injection system 8 Altering the equipment or engine in any manner which adversely affects its operation perfor mance durability or use will VOID the warranty and may cause hazardous cond...

Page 18: ...Warning carbon monoxide CO poisoning hazard CO emitted by a running engine can be deadly Do not operate indoors or in other enclosed areas Location Rear Body Near Muffler Part Number 8600 5 8600 5 1 1...

Page 19: ...EMP NOT CHARGING GLOW PLUGS OIL PRESSURE 2807 4 1 2 4 3 1 Glow plugs activation indicator light 2 Battery charging system malfunction indicator light 3 Low engine oil pressure warning light 4 High eng...

Page 20: ...umber 8653 1 1 1 Warning secure deck with straps and engage parking brake before transporting or trailering with deck tilted up Location Deck Height Adjuster Part Number 2748 1 5 0 127 4 5 114 4 75 12...

Page 21: ...ROPS locked fully upright and use the seat belt 3 Never use the seat belt if the ROPS is not locked fully upright 4 Do not operate the machine on slopes if the ROPS is not locked fully upright 5 Do no...

Page 22: ...5 6 7 8 1 Throttle 2 Warning read Operator s Manual before oper ating the machine 3 Warning wear eye and ear protection when op erating the machine 4 Warning readOperator sManualbeforeservic ing or p...

Page 23: ...ating 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 at...

Page 24: ...RTANT DO NOT overfill the battery Electrolyte will overflow through the vented caps onto parts of the machine and WILL result in severe corrosion 3 Install battery Battery Clamp Secured by Wing Nut s...

Page 25: ...until the wheel rolls freely but is not loose Roller Wheel Roller Wheel Installation DSD60 Shown Mower Deck Installation on Tractor Deck Installation 1 Lightly grease each deck support arm 2 on the t...

Page 26: ...o the Coupler Ring Locked Position photo After installa tion pull on the shaft to check for security Spring Loaded Coupler Ring In Fully Forward Position Coupler Ring Locked Position 6 Raise the mower...

Page 27: ...ward Measure the distance from blade tip to ground on the front and rear The rear of the blade should be 1 16 to 1 8 in 2 to 3 mm higher than the front of the blade remove the chain from the deck heig...

Page 28: ...a clean fuel storage container and funnel CHECK ENGINE CRANKCASE OIL LEVEL Check the engine crankcase oil level before use and after each 8 hours of continuous operation Refer to LUBRICATION for Check...

Page 29: ...red in the raised position by disengaging the locking arms on each side of the carrier frame and inserting the deck hook into the tilt up latch on the tractor body Before operating the tractor make su...

Page 30: ...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 d...

Page 31: ...0 to 16 km h The ground speed is pro portional to the lever position the further the lever is advanced forward the faster the tractor moves It is not necessary to hold the FSC in position since the f...

Page 32: ...lever has two positions Pulling the lever FORWARD engages the PTO that drives the mower blades Pulling the lever BACKWARD disengages the PTO and engages the blade brake Parking Brake The parking brak...

Page 33: ...aker could also be tripped If the light comes on during engine operation stop the engine immediately and correct the source of the problem before further engine operation IMPORTANT Continued operation...

Page 34: ...erating time accumulated while the ignition switch is in the ON position The hourmeter provides maintenance reminders af ter certain hours of operation The hourmeter screen will start flashing the rem...

Page 35: ...ar is not in the fully upright and locked position Never lower the ROPS roll bar when operat ing in areas where there are slopes drop offs or other roll over hazards Be aware there is no roll over pro...

Page 36: ...ol Change Idle Position RIGHT WHEEL STEERING LEVER LEFT WHEEL STEERING LEVER PARKING BRAKE THROTTLE The Forward Speed Control also Establishes the Neutral Park Position of the Steering Levers Full For...

Page 37: ...e engine does not start turn the key to the OFF position and allow a 60 second cool down period between starting attempts Failure to fol low these guidelines can damage the starter motor and shorten b...

Page 38: ...ety sys tem is not working it should be repaired or replaced before operating the mower DO NOT disconnect the safety switches they are for the operator s protection 2 Steer by pulling the lever on the...

Page 39: ...r in the NEUTRAL PARK posi tion the transmission control needs to be adjust ed RefertoADJUSTMENTSforStep3 Neutral Position Adjustment in the Maintenance Instruc tions ENGAGING THE MOWER 1 Set the engi...

Page 40: ...eplaced before operating 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 childre...

Page 41: ...Tractor should not be moving while adjusting cutting height Cutting height is adjusted from operators seat using the height pedal to assist in raising the deck while positioning the height adjustment...

Page 42: ...ac ing them in the normal OPERATING position The transmission rod ends should be com pletely retracted against the chassis otherwise opera tion of the transmission maybe erratic Hydro Lockout Rod Hydr...

Page 43: ...e the transaxles are power boosted controls and jerking the levers can easily slip the tires For sharp turns do not allow the inside wheel to stop and twist on grass pull inside steering lever into re...

Page 44: ...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 con siderable force potentially causing...

Page 45: ...eck FSC Friction Lock x 59 Change Engine Oil Filter x 44 Check Radiator Hoses and Clamps x 58 Change Transaxle Oil and Filter x 48 Replace Fuel Filters 2 Clean Water Separator x 65 Replace Air Filter...

Page 46: ...ating Never mix different types colors of coolants Maintain proper fluid levels in the radiator and overflow tank Air Cleaner System Use only Enginaire air cleaner elements Aftermarket elements may no...

Page 47: ...er on a level surface with the en ginestopped Also makesuretheengineiscool and oil has had time to drain into the sump allow at least five 5 minutes after stopping the en gine IMPORTANT NEVER check or...

Page 48: ...oil filters from the engine manufacturer Aftermarket oil filters may notsealproperlyand ormaynothavethecor rect pressure relief valve for proper lubrication 7 Install the new oil filter on the engine...

Page 49: ...sion reservoirs should be between 1 4 and 1 2 in 0 64 cm and 1 27 cm Hot Level Cold Level Hose Reservoir Cap Expansion Reservoir Location Grease Fitting and Oil Point Lubrication Lubricate the grease...

Page 50: ...embly Grease 1 11 FSC Lever Pivot Grease 1 12 Hydro IdlerArm Pivot Grease 1 13 ClutchActuator Push Rod Grease 1 14 Body Latch Pivot Oil 2 15 PTO Clutch Lever Pivot Grease 1 16 ClutchArm Pivot Grease 1...

Page 51: ...47 Maintenance Instructions LUBRICATION 11 2 1 1 2 3 4 5 6 28 7 18 27 9 26 14 20 18 21 22 20 15 17 10 9 8 7 6 5 4 3 13 14 16 29 24 23 17 12 25 19 Chassis and Deck Lubrication Points...

Page 52: ...ontopofthetransaxle Removetheelbow to access the oil fill opening 5 Fill the transaxles with 20W 50 API Service ClassSLorhigher oilthroughtheopeningwhere the elbows were Fill up to the opening 6 Befor...

Page 53: ...affling and a dust ejection valve provide dust separation and automatic precleaning action Daily or frequent servicing of the air cleaner is not required Use the air filter restriction gauge on the ai...

Page 54: ...ing on an uneven surface or sharp edge Washing the ele ment in water or cleaning solution is not recom mended Do not try to clean the element with compressed air Remember replacing a filter is less ex...

Page 55: ...o check and clean the screen several times during use to prevent engine overheating 1 Slide screen out from underside of radiator To clean the screen wash with soapy water or blow out with compressed...

Page 56: ...iator may cause damage to the engine from overheating IMPORTANT Maintain proper coolant level in the radiator and coolant recovery tank The coolant level should be maintained between FULL and LOW mark...

Page 57: ...e tolerated a point is finally reached where cutting quality deterio ratesandcloggingbeginstooccurbecauseof too much buildup on the baffling and housing DAnger Do not operate the mower with deck in ti...

Page 58: ...axle housings This may be the result of an oil leak If an oil leak is noticed contact your local Walker dealer Cooling Fins Transaxle Housing and Cooling Fins IMPORTANT In case an oil leak develops on...

Page 59: ...ove the LOW mark on the recovery tank If the coolant level is low remove the radiator cap and fill to the overflow port level and then fill the recovery tank above the LOW mark Use a pre mixed 50 50 s...

Page 60: ...the battery Electro lyte will overflow through the vented caps onto parts of the machine and WILL result in severe corrosion Cleaning the Terminals If battery terminals are corroded remove battery fro...

Page 61: ...opposite end of the blade to the same position and comparing If the dif ference in blade tip track is more than 1 8 in 3 mm the blade is bent and should be re placed wArNing DO NOT try to straighten...

Page 62: ...the radiator hoses every 200 hours for dete rioration or damage Also check the tightness of the hose clamps Good preventive maintenance calls for complete replacement of the radiator hoses and clamps...

Page 63: ...orward Speed Control FSC and or PTO engaged With an operator in the seat the Forward Speed Control FSC and PTO disengaged and horn works but the starter is not engaging Forward Speed Control Friction...

Page 64: ...MPORTANT ALWAYS use genuine factory re placementparts SubstitutepartsCANresultinprod uct malfunction and possible injury to the oper ator and or others Drive Belts There are five 5 individual drive be...

Page 65: ...ds Closed Engine Hidden for Clarity PTO Guard Right Hand Guard PTO Pulley Upper LH Guard Lower LH Guard Wire Lock Pin Wire Lock Pin Idler Arm PTO Belt Matched Set Wire Lock Pins 2 To replace the PTO b...

Page 66: ...round drive belt b Make sure the belt tensioner stop bolt and assembly is in place as shown Adjust Belt Tensioner Stop by tightening wing nut until it touches the washer then back off one 1 turn Groun...

Page 67: ...olts b Remove the flex coupling center section P N 2351 4 by removing the six 6 rubber iso couplers 12 bolts flat washers star lock washers Flex Coupling Removal 86 00 2 Bolt Bolt Flex Coupling Guard...

Page 68: ...ect the rubber iso mounts P N 2351 1 for cracking or signs of deterioration and replace as needed Good preventative maintenance would recommend replacing the rubber mounts at the same time as the alte...

Page 69: ...ns of wear or dam age bladesshouldbereplacedforreasonsofsafe ty and performance of the machine An excessive amount of the flat section of the blade has been ground away removed when the blade is sharp...

Page 70: ...ocedure from Sharp en Mower Blades instructions If blades are re placed always use Walker original equipment blades to ensure safety and optimum performance Thequalityandperformanceofreplacementblades...

Page 71: ...dle pulley and can be completely removed 2 Install the deck drive belt by reversing the re moval procedure a Route the belt as shown on the belt routing decal located on the deck housing Leave the bel...

Page 72: ...gly The handles may or may not be even at this point NOTE The LH steering lever is non adjust able This procedure will require adjustment of the RH lever to make it even with the LH lever Levers shoul...

Page 73: ...turn the rod to attain the straight up position Tighten the jam nuts FSC Position 5 in 127 mm FSC Rod FSC Lever Adjust 2 The initial adjustment for neutral is to loosen the jam nuts on each end of th...

Page 74: ...djustment Transmission Control Arm Maximum Speed Tracking Adjustment Shown with Parts Removed for Clarity Step 5 Straight Tracking Adjustment 1 Sit in the seat start the engine set throttle at full sp...

Page 75: ...d pull both steering levers back the FSC lever should not move If the FSC lever moves back the friction needs to be increased 2 With the steering levers held back move the FSC lever back from the FORW...

Page 76: ...k to achieve a 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 shorten the clutch link to increase this measureme...

Page 77: ...Disengaged 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 clutch piv...

Page 78: ...ssary to adjust the blade brake band nut to maintain these dimensions CLUTCH DISENGAGED CLUTCH ENGAGED 5 8 in to 3 4 in 16 mm to 19 mm Clutch Idler Pulley Travel Adjustment Blade Brake Band Blade Brak...

Page 79: ...ll 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 W...

Page 80: ...WALKER MFG CO 5925 E HARMONY ROAD FORT COLLINS CO 80528 970 221 5614 FORM NO 052311 PRINTED IN USA www walkermowers com 2012 WALKER MFG CO TM...

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