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74

Maintenance Instructions 

CHECKING/SERVICING

Tire Pressure

Inflate tires to pressures shown below: 

Deck Caster Wheel*  =  20 PSI (137 kPa)

Drive    

=  15 PSI (103 kPa)

Tailwheel 

=  20 PSI (137 kPa)

* If equipped with optional pneumatic tires

Wheel Bolt Torque

Check the eight (8) lug bolts that mount the drive 

tires.  

Every 100 hours 

they should 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

 

every 10 hours

 of operation (or more often when 

mowing abrasive type grass or operating on sandy 

soils).  

Replace blades if worn, bent, cracked, or 

otherwise damaged 

(refer to 

REPLACING/RE-

PAIRING

 the 

Mower Blades

 in this section).  Use 

the following procedure to check and sharpen 

blades:

NOTE:  Keep blades sharp

 - cutting with dull blades 

not only yields a poor mowing job but slows the 

cutting speed of the mower and causes extra wear 

on the engine and blade drive by pulling hard.

1.  Stop the engine, remove ignition key, and dis-

connect the spark plug wires 

before

 raising the 

mower deck to service blades.

2.  Raise the deck and 

secure

 it in the 

TILT-UP

 

po sition.  Refer to 

CLEANING

 the 

Grass Build-

up in Mower Deck Housing

 in this section for 

deck rais ing instructions.

  DANGER

NEVER operate cutter blades with the 

deck in the raised position.

NOTE:

  PTO shaft must be 

disconnected

 be-

fore checking blades for straightness.

3.  Check the blades for 

straightness 

by marking 

the blade tip position inside the deck housing, 

and then rotating the 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 a blade that is 

bent.  NEVER weld a broken or cracked 

blade.  ALWAYS replace with a new blade 

to assure safety.

4.  If the blade cutting edge is 

dull or nicked,

 it 

should be sharpened.  Remove blades for 

sharpening by grasping the end of the blade us-

ing a rag or a thick, padded glove, while loosen-

ing and removing the nut, lock washer, and flat 

washer that mounts the blade.

5.  Grind cutting edge at the same bevel as the 

original.  Sharpen only the top of the cutting 

edge to maintain sharpness.

NOTE:

      Blades  can  be  sharpened  with  an 

electric blade sharpener, conventional electric 

grinder, or a hand file.

  CAUTION

ALWAYS wear eye protection and gloves 

when sharpening a blade.

Wing 

Tip

Do Not Grind or 

Sharpen on Underside

Intersection 

Wear Area

Sharpen at 

Original 30° Angle

30°

Mower Blade Profile for Sharpening

Summary of Contents for T Series

Page 1: ...nual Safety Assembly Operating and Maintenance Instructions Please Read and Save These Instructions For Safety Read All Safety and Operation Instructions Prior to Operating Machine Beginning S N 13497...

Page 2: ...r 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...

Page 3: ...tion______________________ 23 Deck Leveling________________________ 25 PREOPERATING CHECKLIST______________ 26 Operating Instructions______________ 29 CONTROL IDENTIFICATION LOCATION AND FUNCTION ____...

Page 4: ...73 Cleaning the Terminals_________________ 73 Charging the Battery___________________ 73 Tire Pressure__________________________ 74 Wheel Bolt Torque_____________________ 74 Sharpen Mower Blades_____...

Page 5: ...hydrostatic transmissions which drive the main wheels HYDROSTATIC TRANSMISSION transmits and controls power from the ground drive belt to the main drive wheel LEFT HAND LH refers to the left hand side...

Page 6: ...horized servicing agent of the component manu facturer Any unauthorized work done on these components during the warranty period may void the warranty If you have any difficulty finding an authorized...

Page 7: ...e Mix Antifreeze Water Cooling Fan Electric Radiator Cooling Fan with Reversible Self Cleaning Action Fuel Tank Capacity gal L 4 7 17 8 Fuel Regular Grade Unleaded Gasoline 87 Octane Minimum 10 Ethano...

Page 8: ...56 Transmission Cooling Cooling Fan Mounted on Drive Pulley Ground Travel Speed Forward MPH km h Reverse MPH km h 0 7 0 11 Infinitely Variable 0 5 0 8 Infinitely Variable BLADE DRIVE PTO Shaft Quick...

Page 9: ...1 Tractor with 48 Collection Deck DC48 1 1039 471 GHS SYSTEM Optional Blower 10 5 in Diameter Three Blade Paddle Wheel Blower Brake Band Brake Works in Combination with PTO Clutch Stops Blower within...

Page 10: ...Drive Micro V Walker P N 7248 Blower GHS Model Walker P N 7234 2 SEAT Full Spring Suspension with Dampening and Adjustments for Back Angle Lumbar Support and Operator Weight Standard with Arm rests FR...

Page 11: ...ndling System 10 0 Bushel Catcher Footrests Tilt Up Hook Not Visible Tilt Up Deck Handle Deck Lift Handle Cutting Height Adjustment Catcher Lift Dump Handle Turbine Precleaner Deck Support Pins and He...

Page 12: ...s Catcher Screen Not Visible Oil Drain Plug Instrument Panel Guard Instrument Panel Box Shock Mounted Dump Plate Oil Filter Muffler Tailpipe Tailwheel Fork and Wheels Catcher Door Handle Catcher Air E...

Page 13: ...ty Switch Negative Battery Cable Battery LH Transmission Lockout Lever Positive Battery Cable 30 Amp Circuit Breaker PTO Clutch Lever RH Transmission Lockout Lever Air Intake Hose EVAP Line Fuel Retur...

Page 14: ...y Walker Manufacturing must take full responsibility for safety The Walker Rider Lawnmower has been designed with many safety features to protect the operator from personal harm or injury However it i...

Page 15: ...TRAL 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 engine power interruption when driving over bumps 10 Handle gas...

Page 16: ...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...

Page 17: ...osed Also keep fingers and hands clear of the door frame The door may slam shut with considerable force 20 In case of a clogged or plugged mower deck or GHS catching system a Disengage the blade clutc...

Page 18: ...ines and fuel injectors contact your Walker dealer or autho rized Kohler service dealer 8 Altering the equipment or engine in any manner which adversely affects its operation perfor mance durability o...

Page 19: ...a deck or other implement attached 4 PTO Clutch Lever Move lever forward to disengage PTO clutch back to engage 5 Warning do not engage PTO clutch with PTO shaft disconnected Location RH Fender Part...

Page 20: ...ace and in the lowest position 2 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 Loca...

Page 21: ...Tilt Latch Raise lever to release Lift at back of body to raise 1 1 Caution Pinch point Keep all body parts clear when closing grass catcher door Location Catcher Door Hinge Bar LH and RH Sides Part N...

Page 22: ...te indoors or in other enclosed areas 8600 12 1 Location Instrument Panel Part Number 8823 7 Location Front Body Adjacent to RH Steering Lever Part Number 8600 34 1 Warning read Operator s Manual befo...

Page 23: ...e engine is running Never use a quick battery charger to start the engine Never jump start the engine using an other source Electricity fluctuations can damage the ECU Electronic Control Unit Always d...

Page 24: ...ater or any other liquid during initial activation 2 Remove the filler caps and carefully fill each cell until the electrolyte is just above the plates 3 After the battery is filled with electrolyte r...

Page 25: ...Installation 1 Remove the bolt nut and axle spacer tube from each deck caster wheel fork 2 Fit the axle spacer tube through the wheel hub and fit the assembly into the wheel fork 3 Insert the 3 8 16 x...

Page 26: ...and in the lowest possible position Attach Shield Discharge Shield Installation on Side Discharge Deck PTO Shaft Guard Installation Position the shaft guard as shown and mount with two 2 1 4 20 x 1 2...

Page 27: ...Deck Support Arms Arrows on Shaft and Tube Used to Align When Sliding Together PTO Connection PTO Shaft Connection 4 Reaching under the tractor slide the PTO cou pler tube onto the deck drive shaft a...

Page 28: ...d 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 spr...

Page 29: ...rocedure 2 Check the side to side level Rotate each blade sideways and measure the distance from blade tip to ground on each side If mea surements vary more than 1 8 in 3 mm add a washer shim under th...

Page 30: ...ne containing greater than 10 ethanol DO NOT use additives such as car buretor cleaners deicers or moisture removing agents DO NOT use gasoline blended with methyl alcohol CHECK ENGINE CRANKCASE OIL L...

Page 31: ...ructions for blower cleaning information DANGER Never operate cutter blades with deck in raised position because it is hazardous The tilt up deck can be secured in the raised posi tion by unlocking th...

Page 32: ...s Refer to the Cutting Height Adjustment decal on the deck gearbox cover CHECK SECURITY OF DRIVE WHEEL BOLTS The eight 8 lug bolts mounting the drive tires should each be torqued to 75 to 85 lb ft 102...

Page 33: ...safe and efficient operation of the mower Engine Throttle The throttle control lever red knob is located on the left side of the seat and is used to control engine speed Moving the lever forward towa...

Page 34: ...a full backward lever stroke The levers are released to the FORWARD position for straight ahead ground travel NOTE Pushing forward on the steering levers will not cause any change in tractor motion th...

Page 35: ...SPEED CONTROL LEVER FSC BLADE CLUTCH PTO Pull Up to Engage Neutral Park Position Forward Position No Control Change Engaged Position LEFT WHEEL STEERING LEVER Full Forward Ground Speed Position Interm...

Page 36: ...ith the lockout cam the hydrostatic transmissions are re leased to permit freewheeling By releasing the cam and lowering the lever the transmissions are en gaged for normal operation The transmission...

Page 37: ...ed out If you fail to do so your health may be affected and the risk of ac cident increased CAUTION Before the tractor is used the safety switch must be checked for proper function The operation of th...

Page 38: ...he cover and loosen the hexa gon nut size 13mm situated behind it Set the arm rests in the desired position 5 steps and tighten the hexagon nut Replace the cap onto the nut Refer to Figure 4 For Lumba...

Page 39: ...switches and indicators located on the instrument panel Instrument Panel Ignition Switch Oil Pressure Warning Light Water Temperature Warning Light Water Temperature Gauge Light Switch Optional Warnin...

Page 40: ...igh voltage the red area indicates an electrical system failure The cause of the failure should be determined and cor rected Oil Pressure Warning Light Horn The oil pressure warning light and horn ind...

Page 41: ...START position Do not hold the key in the START position longer than 10 seconds If the engine does not start return the key to the O posi tion for at least 60 seconds before making a restart attempt P...

Page 42: ...gine should be checked before further crank ing Turn the key to the OFF position and allow a 60 second cool down period between starting at tempts Failure to follow these guidelines can damage the st...

Page 43: ...the lever on the side of desired direction of turn e g pull the LH lever to turn left To minimize the possibility of overcontrol use only one hand on both steering levers Beginning Recommendations ar...

Page 44: ...vers backward to the NEUTRAL position trac tor not moving and then moving the FSC lever to the NEUTRAL PARK position NOTE If the tractor creeps forward or back ward with the FSC lever in the NEUTRAL P...

Page 45: ...NE 1 Pull the steering levers to the NEUTRAL PARK posi tion and then move the FSC lever backward to the NEUTRAL PARK position 2 Slow the engine to a fast idle put the throttle in the 1 2 throttle posi...

Page 46: ...n When the machine is stopped or moving slowly engage the parking brake NOTE The emergency stop procedure is exactly the same procedure as used to normally stop and park the machine ADJUSTING CUTTING...

Page 47: ...ed Cam in UNLOCKED Position Lockout Lever Normal Operating Position RECOMMENDATIONS FOR MOWING DANGER Do not mow around overhanging tree branches or bushes at the same height as the operator s torso a...

Page 48: ...drive tires Use smooth control move ments of the steering levers since the hydrostatic transmissions are power boosted controls and jerk ing the levers can easily slip the tires For sharp turns do no...

Page 49: ...in 15 52 in Maximum Recommended Slope Do Not Operate on Steep Slopes Maximum Recommended Slope DANGER Do not mow or dump grass within 5 feet 1 5 meters of an embankment or retaining wall with drop off...

Page 50: ...ody 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...

Page 51: ...ion Mower Deck Exhaust Screen Removable Grass Catcher Deck Discharge Chute Full Signal Horn Actuator Rod Powerfil Drive Motor PTO and Blade Gear Drive Shear Bolt Catcher Air Exhaust Powerfil Delivery...

Page 52: ...bulldozing leaves particularly when the leaves are piled in a thick layer To make this ad justment the hitch pins in the two 2 front deck support pins are repositioned 2 to 3 notches higher while lea...

Page 53: ...eck Bottom View FORWARD Rear Discharge Chute Blades Must Operate at Right Angles 90 Degrees Mounting Nut Torque 60 lb ft 81 N m Blade Rotation for Reverse Rotation GHS Mower Deck Bottom View Check the...

Page 54: ...ade clutch to the ENGAGED posi tion The spout should oscillate approximately 35 cycles per minute NOTE If the grass spout fails to oscillate the clutch switch should be checked for function the switch...

Page 55: ...gate dumps into a disposal area or dumps into the optional dump bag The dump bag is a reusable nylon fabric bag designed to conveniently move grass clippings from the catcher to a remote disposal area...

Page 56: ...th the one hand while continuing to hold up on the bag strap with the other hand Refer to photos for posi tioning the bag and dumping Catcher Lift Dump Handle Dumping Catcher into Dump Bag 5 Lower the...

Page 57: ...r raising the catcher with the power dump jig gle the steering levers and make the tractor bounce a little to unstick the grass and make it slide out of the catcher NOTE With the power dump mechanism...

Page 58: ...the NEUTRAL PARK Position and the parking brake engaged and by standers stay clear when the Hi Dump is operating To avoid tipping over the machine should be parked on LEVEL GROUND when raising dumpin...

Page 59: ...nts 1 2 Catcher Door Grass Catcher Cable Guide Lift Channel Cable Assembly Upper Arm Power Dump Ram Actuator Fork Catcher Door Gas Spring Gas Spring Rubber Bumper Door Arm Actuator Lower Arm Cable Gui...

Page 60: ...le Assembly Auxiliary Power Terminals Not Visible Lift Toggle Switch Hydraulic Valve Block Electric Solenoid Valve Actuator s Upper Arm Catcher Door Gas Spring Lower Arm Door Arm Actuator Gas Spring A...

Page 61: ...Radiator Hoses and Clamps x 76 Check Regap Spark Plugs x 75 Replace Air Filter Element Safety Filter Dust Ejection Valve x 67 Flush Radiator and Change Coolant x 69 Service Battery x 73 Check Transmi...

Page 62: ...System Use only Donaldson air cleaner elements After market elements may not seal in the air cleaner housing allowing dirt to enter the engine Also af termarket filters often skimp on the filtration...

Page 63: ...d time to drain into the sump allow at least five 5 minutes after stopping the engine IMPORTANT NEVER check or add oil with the engine running 2 Before removing the dipstick clean the area around the...

Page 64: ...ual or the engine owner s manual Use the recommended oil viscosity for the expected ambient temperature Oil with the correct vis cosity will aid starting in cold weather and assure proper lubrication...

Page 65: ...damaged Reinstall gearbox cover plates torque screws to 24 lb in 3 N m DS52 or DS62 Mower Deck Lubrication There are several special lubrication requirements for the DS52 or DS62 mower deck in additio...

Page 66: ...need to be removed and rebuilt PTO Gearbox Vent Plug Dipstick Jackshaft Dipstick Location Tractor PTO Gearbox Changing Gearbox Oil The tractor PTO gearbox is oil filled No scheduled oil change is req...

Page 67: ...ission is not performing properly contact your local dealer Attempting to add fluid or service the transmission may VOID THE TRANSMISSION WARRANTY NOTE Loosening the air bleed plug on top of the trans...

Page 68: ...e 1 Jackshaft Drive 25 PTO Clutch Lever Pivot Grease 1 26 ClutchActuator Push Rod Grease 2 27 Belt Tightener Pivot Grease 1 PTO Clutch 28 BrakeActuator Rod and Brake Oil 3 Band Pivot Pins Clevis 29 Th...

Page 69: ...nce Instructions LUBRICATION 65 Chassis and Deck Lubrication Points DC42 Shown 20 22 19 24 33 34 36 37 29 38 37 20 32 26 25 26 27 28 30 17 16 29 31 35 31 19 21 23 18 13 14 14 15 1 1 12 5 4 4 11 12 7 4...

Page 70: ...take airflow separates dust from the air giving the initial stage of air clean ing Dust particles are exhausted through a single small vent in the side of the housing Since no dust is trapped the prec...

Page 71: ...ir Filter Restriction Gauge Location Inspect the paper element after every 100 hours of service and replace the element and safety filter yearly or when dirty or damaged More frequent replacement may...

Page 72: ...Use special care to clean both the inside and outside surfaces of the outlet tube IMPORTANT Any dust left on the inside of the outlet tube will go into the engine and cause wear 8 Check the outside su...

Page 73: ...m Flushing Radiator and Changing Coolant Change engine coolant every year Drain the cool ant from the engine and radiator 1 Remove the radiator cap 2 Open the drain cocks on the engine block and radia...

Page 74: ...t buildup NOTE A visual clue of binding of the blower wheel is the blower blade tips are polished from rubbing on dirt When a dirt deposit is found use a high pressure washer or water spray to clean t...

Page 75: ...use compressed air and or a pressure washer The cooling fins extend all the way around the housing the fins underneath need to be clean as well as the more visible fins above Also pay close attention...

Page 76: ...the LOW mark Use a pre mixed 50 50 solution of antifreeze ethylene glycol and distilled water to fill the cooling system IMPORTANT The coolant solution of antifreeze and distilled water must be thorou...

Page 77: ...stilled wa ter to the bottom of the vent wells 1 4 to 1 2 in 6 to 13 mm above the plates 3 Replace filler caps IMPORTANT DO NOT overfill the battery Electro lyte will overflow through the vented caps...

Page 78: ...he Grass Build up in Mower Deck Housing in this section for deck rais ing instructions DANGER NEVER operate cutter blades with the deck in the raised position NOTE PTO shaft must be disconnected be fo...

Page 79: ...n the blade drive gear box This seal is protected by the trash guard on the blade hub and seal protector plate on the housing but is still vulnerable to seal damage due to operat ing in an adverse env...

Page 80: ...ration or damage Also check the tightness of the hose clamps Good preventive maintenance calls for complete replacement of the radiator hos es and clamps every two 2 years Blade Brake Action WARNING I...

Page 81: ...ontrol FSC and or PTO engaged With an operator in the seat the Forward Speed Control FSC and PTO disengaged and oil pressure warning horn sounding but the starter will not engage Forward Speed Control...

Page 82: ...ts CAN result in product malfunction and possible injury to the op erator and or others Drive Belts There are four 4 individual belts on GHS models or three 3 belts on SD models Jackshaft Drive Belt E...

Page 83: ...tch idler away from the belt d Next remove the belt from the engine pulley and then the PTO drive pulley 2 Install the PTO drive belt by reversing the re moval procedure IMPORTANT Make sure the belt i...

Page 84: ...ressing the spring loaded idler arm c Roll the belt off the jackshaft pulley and remove Jackshaft Drive Belt Disengaged 2 Reverse the removal procedure to replace the jackshaft drive belt Jackshaft Dr...

Page 85: ...ner arm Roll the belt off the blower pulley GHS Blower Drive Belt Assembly Disengaged 2 Reverse the procedure to install the GHS blow er drive belt GHS Blower Drive Belt Assembly Engaged Depress Idler...

Page 86: ...belt b Slide belt off pulleys then release the idler Transmission Drive Pulley Hydrostatic Ground Drive Belt Jackshaft Spring Idler Pulley Belt Tightener Arm Hydrostatic Ground Drive Belt Assembly Di...

Page 87: ...cutting blade is keyed to the blade hub by two 2 shear bolts 10 24 x 5 8 in stainless steel machine screws These bolts are designed to shear and protect the blade drive gearbox from damage if the blad...

Page 88: ...R When blades are operated over 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 fo...

Page 89: ...for a new machine after initial 5 or 10 hours of operation to begin to not travel straight this is due to the break in of the trans missions In this case proceed to Straight Ground Travel Adjustment...

Page 90: ...e control rod can place excessive loads on the transmission internal control stops and cause internal wear and damage to the trans mission Making additional turns beyond one turn reduces the maximum f...

Page 91: ...ith the FSC in neutral the eng ine will not start when the switch is open Straight Ground Travel Adjustment Step 4 1 Sitintheseat starttheengine operateatnormal speed and with the FSC in the NEUTRAL P...

Page 92: ...ged and PTO Clutch Disen gaged illustrations Adjust the bolt head clearance 1 4 to 3 8 in 6 35 to 9 53 mm first clutch engaged then adjust uncompressed spring length clutch disengaged The spring must...

Page 93: ...s adjustable and is set to give belt release without excessive slack and to apply the blade brake The blade brake is activated by the brake actuator rod linkage to the clutch idler pulley mechanism Th...

Page 94: ...block that will allow four adjustment positions from 5 16 to 11 16 in 8 to 17 mm 11 16 in 17 mm 9 16 in 14 mm 7 16 in 11 mm 5 16 in 8 mm PTO Belt Tightener Stop Block Adjustments Clutch Idler Pulley T...

Page 95: ...Brake Band Adjustment NOTE The length of the actuator rod is adjusted by disconnecting the bottom clevis and shortening or lengthening accordingly The standard pre set length of the actuator rod is se...

Page 96: ...oth steering levers back the FSC lever should not move If the FSC lever moves back when the steering levers are pulled back the friction needs to be increased Forward Speed Control Position Checking F...

Page 97: ...ut Pivot Point Steering Handle Adjustment Tilt Up Deck Adjustable Stop When the carrier frame hinge joint is properly ad justed the deck lock levers should move in and out of the engaged and disengage...

Page 98: ...Pak switch with the engine running Projectiles CAN be thrown out of the grass delivery spout and CAN cause serious injury to bystand ers or property damage 2 Measure from the exhaust screen top of ca...

Page 99: ...proper maintenance improper use or abuse of the product alterations or failure to follow the instructions contained in the Operator s Manual for operation and maintenance B The customer shall pay any...

Page 100: ...WALKER MFG CO 5925 E HARMONY ROAD FORT COLLINS CO 80528 970 221 5614 FORM NO 100517 PRINTED IN USA www walkermowers com 2017 WALKER MFG CO...

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