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Walker MT Owner's Manual

20.0 / 25.0 hp rider lawnmower
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See also: Owner's Manual , Detailed Instructions
OWNER'S MANUAL
Safety, Assembly, Operating, and Maintenance Instructions
Please Read and Save These Instructions
For Safety, Read All Safety and Operation
Instructions Prior to Operating Machine
Model MT (20.0 / 25.0 HP)
(Covers Serial Numbers 95-21329 and on)
™
Effective Date: 08-14-98
P/N 8000-1
Price $5.00

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Summary of Contents for Walker MT

  • Page 1 Safety, Assembly, Operating, and Maintenance Instructions (Covers Serial Numbers 95-21329 and on) Please Read and Save These Instructions For Safety, Read All Safety and Operation Instructions Prior to Operating Machine Model MT (20.0 / 25.0 HP) ™ Effective Date: 08-14-98 P/N 8000-1 Price $5.00...
  • Page 2 Foreword Thank you. . .for purchasing a Walker mower. Every effort has been made to provide you with the most reliable mower on the market, and we are sure you will be among our many satisfied custom- ers. If for any reason this product does not perform to your expectations, please contact us at (970) 221-5614.

  • Page 3: Table Of Contents

    Table of Contents General Information HIGHLIGHTED INFORMATION _____________ 1 GLOSSARY ____________________________ 1 IDENTIFYING NUMBER LOCATIONS ________ 1 ENGINE SERIAL NUMBER LOCATION ______ 2 SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS__________ 2 Specifications _______________________ 3 ENGINE________________________________ 3 ELECTRICAL SYSTEM ___________________ 3 TRANSMISSION _________________________ 3 BLADE DRIVE __________________________ 4 TIRE SIZE ______________________________ 4 TIRE PRESSURE ________________________ 5...
  • Page 4 Table of Contents Maintenance Instructions MAINTENANCE SCHEDULE CHART _______ 44 IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE _____ 45 Fuel System _________________________ 45 Starting/Stopping _____________________ 45 Cooling System ______________________ 45 Air Cleaner System ___________________ 45 Oil _________________________________ 45 LUBRICATION _________________________ 46 Engine Oil ___________________________ 46 Engine Break-In Oil ___________________ 46 Checking Engine Crankcase Oil Level ____ 46...

  • Page 5: General Information

    Walker Manufacturing recommends that any ser- vice requiring special training or tools be performed by an authorized Walker Mower Dealer. There are several general practices to be aware of in the area of safety. Most accidents associated with the oper-...

  • Page 6: Engine Serial Number Location

    If you have any difficulty finding an authorized outlet or obtaining warranty service, please contact our Service Department for assistance: Walker Manufacturing Company 5925 E. Harmony Road Fort Collins, CO 80528 1-970-221-5614...

  • Page 7: Specifications

    Charging Output System Polarity Ignition Starter Interlock Switch Circuit Breaker TRANSMISSION Manufacturer/Model Steering Forward Speed Control MT 20.0 HP Kohler CH20, 2 Cyl., Gasoline (Air Cooled) 38.1 cu. in. (624 cc) 20.0 3750 3600 32 (43.4) @ 2500 1200 Champion RC12YC .030 in.

  • Page 8: Blade Drive

    [25 in. (64 cm) Blade] @ 3600 RPM Engine TIRE SIZE Deck Caster Wheel Deck Caster Wheel (Optional) Drive Rear (Dual) MT 20.0 HP Dynamic Braking through Hydrostatic Transmission Mechanical Pin Lock in Transmission Gear Transmission Release by Manual Dump Valve...

  • Page 9: Tire Pressure

    (107 to 157 cm), with corresponding deck weights ranging from 170 to 300 lb (77 to 136 kg). Optional (9.5 Bushel) Grass Catcher adds approx. 5 lb (2 kg) and 5 in. (13 cm) in Height MT 20.0 HP 20 PSI (137 kPa)

  • Page 10: Drive Belts

    Deck GHS Catcher and Chutes NOTE: The manufacturer reserves the right to make changes in specifications shown herein at any time without notice or obligation. MT 20.0 HP Walker P/N 8230 Gates 3VX355 (or Walker P/N 6231) Walker P/N 7248...

  • Page 11: Component Identification

    Component Identification Turbine Catcher Door Precleaner Safety Latch Anti-Scuff Roller Catcher Lift / Dump Handle Fuel Tank and Cap Counterweight Spring and Protective Cover Transmission Control Rod Adjustment Nut (RH) Deck Support Arms Deck Lift Handle (Cutting Height Adjustment) Grass Handling System 7.0 Bushel Catcher Tilt-Up Spring Clip...
  • Page 12 Component Identification Removable Grass Catcher Exhaust Catcher Screen Catcher Door Deflector (Not Visible) Gas Spring Catcher Lift / Instrument Panel Dump Handle Guard Instrument Panel Box Catcher (Shock Mounted) Door Dump Plate Catcher Door Handle Deck Lift Rod Tailpipe Filter Muffler Anti-Scuff Oil Drain...
  • Page 13 Component Identification Air Cleaner Donaldson Air Cleaner (Primary Air Cleaner) Air Restriction Indicator (Not Visible) Air Intake Hose (Primary to Secondary) Fuel Tank Precleaner Tube Jackshaft PTO Gearbox Dipstick Turbine Precleaner RH Transmission Lockout Lever 30 Amp Circuit Breaker Clutch Lever Positive (+) Negative (-) Battery Cable...

  • Page 14: Safety Instructions

    Any person using procedures, tools, or control techniques not recommended by 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 is necessary for the operator to use safe operating procedures at all times.

  • Page 15: Operating

    Safety Instructions Do not wear loose fitting clothing that could get caught in moving parts. Do not operate this machine while wearing shorts; always wear adequate protective clothing, including long pants. Wearing safety glasses, safety shoes, and a helmet is advisable and required by some local ordinances and insurance regulations.

  • Page 16: Maintenance

    Safety Instructions 10. Disengage the blade drive when transporting the machine across drives, sidewalks, etc. Ne- ver raise the mower deck while blades are rotating. 11. The maximum recommended side slope op- erating angle is 20 degrees or 33% grade. When operating the machine on a slope, reduce speed and use caution to start, stop, and ma- neuver.
  • Page 17 Safety Instructions Perform only maintenance instructions de- scribed in this manual. Unauthorized main- tenance operations or machine modifications may result in unsafe operating conditions. If the engine must be running to perform a main- tenance adjustment, keep hands, feet, and clothing away from moving parts.

  • Page 18: Safety, Control, And Instruction Decals

    Safety Instructions SAFETY, CONTROL, AND INSTRUCTION DECALS Safety, Control, and Instruction Decals are installed on the machine; if any are missing, illegible, or damaged, a replacement should be ordered and installed before putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual. Adjacent to Blower Discharge Chute through Body (5804) Each End of Mower Deck (5808)
  • Page 19 Safety Instructions SAFETY, CONTROL, AND INSTRUCTION DECALS Safety, Control, and Instruction Decals are installed on the machine; if any are missing, illegible, or damaged, a replacement should be ordered and installed before putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual. Jackshaft Support Adjacent to Dipstick (7827) Deck Carrier Frame (8647)

  • Page 20: Assembly Instructions

    Assembly Instructions SETUP INSTRUCTIONS Walker Mowers are shipped partially assembled. After uncrating the tractor and mower deck, initial setup is required. NOTE: During the process of unpacking, any dam- aged or missing parts should be noted and reported to the delivering carrier immediately (put in writing within 15 days).

  • Page 21: Battery Charging

    Assembly Instructions After the battery is filled with electrolyte, replace the filler caps and charge the battery. Refer to Battery Charging . Battery Charging DANGER BATTERIES PRODUCE EXPLOSIVE GASES Charge the battery in a well-ventilated area, so that gases produced while charg- ing can dissipate.

  • Page 22: Deck Discharge Chute Installation

    Assembly Instructions Grease Fitting Locations Spacer Washer Axle Spacer Tube Deck Caster Wheel Installation NOTE: If semi-pneumatic wheels are installed, make sure the spacer washers fit over the spacer tube and are not caught between the fork and the end of the tube. The washers should move freely on the axle spacer tube.
  • Page 23 Assembly Instructions NOTE: When installing the DSD52 or DSD62 Mower deck, make sure to retract the dolly wheel after mounting the deck on the tractor. If the deck is rear discharge (GHS equipped model), the rear discharge chute will need to be aligned and connected to the blower inlet dur- ing the last 2 in.

  • Page 24: Deck Leveling

    Assembly Instructions Spring Tension Adjustment Nut Located Under Lower Spring Hook (Not Visible) Counterweight Springs Clip Onto Body With Forward Body Tilted Up Deck Counterweight Spring Installation Deck Leveling Position mower on a smooth, level surface. Set the cutting height to the highest position - 4 in. (102 mm) - for easy access under the deck to measure blade height.

  • Page 25: Preoperating Checklist

    Assembly Instructions PREOPERATING CHECKLIST Before operating the mower for the first time, and as a routine before daily operations, it is important to make sure the mower is properly prepared and ready for operation. The following is a list of items to be checked.
  • Page 26 Assembly Instructions CHECK GEAR AXLE OIL LEVEL Refer to Gear Axle Lubrication in Maintenance In- structions. INSPECT FOUR (4) DRIVE BELTS Engine PTO Drive, Jackshaft Drive, Hydrostatic Ground Drive, and GHS Blower Drive (if equipped). CHECK HYDROSTATIC TRANSMISSION OIL LEVEL Refer to LUBRICATION for Checking Hydrostatic Transmission Fluid Level in Maintenance Instruc- tions.
  • Page 27 Assembly Instructions CAUTION Do not operate machine with deck tilt-up pivot joint unlocked. DANGER Do not operate the mower with deck in tilt- up position. Do not move the tractor with the deck in the tilt-up position. CHECK MOWER BLADE CONDITION, SHARP- NESS, AND SECURITY OF MOUNTING The blade mounting nut should be tightened to 60 ft-lb (81.3 N m).

  • Page 28: Operating Instructions

    Operating Instructions CONTROL IDENTIFICATION, LOCATION, AND FUNCTION Operating Controls CAUTION Before operating the mower, become fa- miliar with the location and function of all operator controls. Knowing the location, function, and operation of these controls is important for safe and efficient opera- tion of the mower.

  • Page 29: Engine Throttle

    Operating Instructions Choke Throttle Choke and Throttle Location 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 toward the FAST position increases engine speed; moving it back- ward toward the IDLE position decreases engine speed.

  • Page 30: Front Body Latch Release

    Operating Instructions Front Body Latch Release The front portion of the tractor body hinges forward for maintenance access and is latched down in the OPERATING position. To raise the body, move the latch release forward. Front Body Latch Release Front Body Latch Release Transmission Lockout Levers The transmission lockout levers disengage the hy- drostatic transmissons.
  • Page 31 Operating Instructions The Forward Speed Control also Establishes the Neutral-Park Position of the Steering Levers LEFT WHEEL STEERING LEVER Forward Position (No Control Change) Neutral-Park Position Reverse Drive Wheel Motion Position Fast Throttle Position Idle Position THROTTLE Operating Controls (Top View from Drivers Point of View) RIGHT WHEEL STEERING LEVER ON Position...

  • Page 32: Instrument Panel

    Operating Instructions Instrument Panel This illustration shows the configuration of the switches and indicators located on the instrument panel. Oil Pressure Over Temperature Ignition Warning Light Warning Light Switch Hourmeter Voltmeter Light Switch (Optional) Warning Horn Instrument Panel...

  • Page 33: Hourmeter

    Operating Instructions Hourmeter The hourmeter displays operating time accumu- lated while the ignition switch is in the ON position. Voltmeter The voltmeter displays battery and charging system voltage. An indication of low or high voltage (below 11.5 volts or above 15.5 volts) indicates an electri- cal system failure.

  • Page 34: Starting The Engine

    Operating Instructions STARTING THE ENGINE CAUTION Before operating the mower, read and un- derstand all Safety Instructions and Operat- ing Instructions. WARNING NEVER run the engine in an enclosed or poorly ventilated area. Engine exhaust contains carbon monoxide, an odorless and deadly gas.

  • Page 35: Adjusting Ground Speed And Steering

    Control setting until familiar with all operat- ing characteristics. Remember it is not necessary to hold the steering levers forward (a unique Walker feature); always PULL on the levers for steering or for reverse motion of the mower. Learn to operate the mower with your left hand on the steering levers and right hand on Forward Speed Control.

  • Page 36: Engaging The Mower

    Operating Instructions Forward Speed Control (FSC) Keep Feet On Footrest Correct Operator Hand Position on the Controls Reverse direction of the mower by pulling both levers backward. NOTE: Smooth action on the steering levers will produce smooth mower operation. Remem- ber to keep the engine and ground speed slow until learning the control response.

  • Page 37: Stopping The Machine

    Operating Instructions Engaged Position Blade Clutch Engaged Disengaged Position Blade Clutch Disengaged STOPPING THE MACHINE Slow the engine to a fast idle; put the throttle in the 1/2 throttle position. Pull the steering levers to the NEUTRAL posi- tion and then move the FSC lever backward to the NEUTRAL-PARK position.

  • Page 38: Adjusting Cutting Height

    Operating Instructions ADJUSTING CUTTING HEIGHT WARNING The engine must be stopped before ad- justing cutting height. Disengage the blade clutch (PTO), stop the engine, and remove the ignition key. Wait for all move- ment to stop before getting off the seat. Cutting height is adjusted by positioning the four re- tainer hitch pins in a series of seven vertical holes on the deck support pins.

  • Page 39: Recommendations For Mowing

    Operating Instructions RECOMMENDATIONS FOR MOWING IMPORTANT: Operate the engine at full speed when mowing, to allow the engine to produce full horsepower and to increase efficiency of the engine cooling system. Keep the mower deck and discharge chute clean. Mow with sharp blades. A dull blade tears the grass (resulting in poor lawn appearance) and uses extra power (slowing the mowing speed).

  • Page 40: Recommendations For Tilt-Up Deck Operation/Transport

    Operating Instructions RECOMMENDATIONS FOR TILT-UP DECK OPERATION/TRANSPORT To avoid potential deck and/or tractor damage while using the tilt-up deck, the following recommenda- tions are offered: Do not move the tractor with the deck in the tilt- up position since both the roller wheels (on the back of the deck) and the GHS discharge chute may be damaged by moving the tractor.

  • Page 41: Grass Handling System (Ghs)

    Operating Instructions GRASS HANDLING SYSTEM (GHS) GHS Model Only Catcher Door Safety Latch Exhaust Screen (Removable) ® Grass-Pak Vane Switch Exhaust ® Powerfil Deflector Drive Motor Actuator “Full” Signal Horn Delivery Chute Catcher Door Clutch Catcher Door Spring PTO and Blade Gear Drive Grass Catcher Dump Handle...

  • Page 42: General Information

    Operating Instructions General Information The Grass Handling System (GHS) consists of a rear discharge mower deck connected to a 10 in. (25 cm) blower and a rear mounted grass catcher with 7.0 bushel (246 liters) capacity or optional 9.5 bushel (335 liters) capacity. The GHS blower oper- ates any time the mower blade clutch is engaged and moves grass through the rear discharge deck chute into the grass catcher.

  • Page 43: Clogging Checklist

    Operating Instructions Clogging Checklist In case of clogging, there will be a distinct change in the sound of the blower, i.e., the blower sound will stop. Also, the mower deck will begin to leave a trail of grass clippings. When this occurs, stop the engine, disconnect the spark plug wires, and make sure all movement has stopped before attempt- ing to unclog.

  • Page 44: Using The Tilt-Up Deck

    Operating Instructions Check that the openings in the removable air exhaust screen in the grass catcher are not plugged. If the screen is clogged, refer to Cleaning the GHS Exhaust Screen in this section. Remember, anything that restricts airflow or material flow along the entire path from the mower deck to the grass catcher can cause clogging.

  • Page 45: Dumping The Catcher

    Operating Instructions Dumping the Catcher For dumping, the catcher either tailgate 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 or container. Tailgate Dumping Open the back door by lifting on the door handle.

  • Page 46: Power Dump Option

    Operating Instructions Hook the bottom of the bag over the rear bumper while lifting on the handle strap. Tilt the catcher back to dump into the bag by lift- ing on the catcher lift handle on the lower front corner of the catcher with the one hand while continuing to hold up on the bag strap with the other hand.
  • Page 47 Operating Instructions Door Actuator Grass Catcher Catcher Door Gas Spring Cable Guide Lift Channel Power Dump Ram Actuator Fork Catcher Door Cable Rod Guide Cable Assembly Spring Actuator Mount Assembly Dog Leg Assembly Rubber Bumper Power Dump Components...

  • Page 48: Maintenance Instructions

    Maintenance Instructions MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTERVALS - MODEL MT Service Item Check Engine Crankcase Oil Level Check/Clean Engine Air Cooling System* Check Security of Air Filtration Components Check Air Filter Restriction Gauge Clean Grass Buildup Under Deck...

  • Page 49: Important Tips For Care Of The Kohler Engine

    Maintenance Instructions IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE Fuel System Fuel must be clean - free from water, dirt, and or- ganic material. Change fuel filter on a regular basis and when contamination is suspected or found in the fuel. Starting/Stopping For starting in cold weather [below 40°...

  • Page 50: Lubrication

    Maintenance Instructions LUBRICATION WARNING DO NOT attempt to lubricate the machine with the engine running. Disengage the PTO clutch, shut off the machine, and re- move the ignition key. Proper lubrication is an important maintenance pro- cedure. It reduces wear and makes the machine qui- eter and easier to operate.

  • Page 51: Grease Fitting And Oil Point Lubrication

    Maintenance Instructions Park the mower on a level surface with the en- gine stopped. The engine oil should be warm before draining. If not warm from operation, start the engine and run a few minutes to warm the oil. Remove the dipstick and the oil drain plug and drain the oil into a suitable container.
  • Page 52 Maintenance Instructions Ident Location Deck Caster Wheel Fork Pivot Deck Caster Wheel Bearing Tee Gearbox, Deck Blade Drive Gearbox PTO Shaft Guard Hinge Universal Joint Shaft Assembly Grease Pivot Assembly, Tilt-Up Deck Deck Support Arm Socket Body Hinge Point FSC Actuator Rod Pivot Pins FSC Lever Pivot FSC Lever Fork (Grease Slide Area)
  • Page 53 Maintenance Instructions LUBRICATION Chassis and Deck Lubrication Points...

  • Page 54: Mower Deck Gearbox Lubrication

    Maintenance Instructions Mower Deck Gearbox Lubrication NOTE: These instructions apply to all mower decks with gear-driven blades. Refer to DSD52 or DSD62 Mower Deck Lubrication in this section for the DSD52 or DSD62 deck with belt-driven blades. The mower deck gearboxes (tee gearbox and blade drive gearboxes) are connected as a unitized assem- bly, and oil flows freely between them.

  • Page 55: Tractor Pto Gearbox Lubrication

    Maintenance Instructions Check the oil level in the belt drive gearbox ev- ery 100 hours (or sooner if a visible oil leak has developed). With the deck in the normal oper- ating position, remove the level plug in the side of the gearcase.

  • Page 56: Hydrostatic Transmission Fluid

    Maintenance Instructions Hydrostatic Transmission Fluid Checking Hydrostatic Transmission Fluid Level Hydrostatic transmission fluid level should be checked every 25 hours of machine operation. It is preferable to check the fluid level when fluid is cold. Check fluid level as follows: Park the mower on a level surface.

  • Page 57: Cleaning

    Maintenance Instructions Reinstall the lower drain plug, making sure the rubber O-ring on the plug is in place and in good condition. Refill the transmission through the air bleed plug hole until it is as full as possible. IMPORTANT: Avoid fluid contamination when filling the reservoir.

  • Page 58: Turbine Precleaner

    IMPORTANT: Use only Donaldson air filter ele- ments for replacement (Donaldson P822686 or Walker 5090-1). Aftermarket filters may not seal properly or filter efficiently. Cover Vacuator™ Valve...
  • Page 59 Maintenance Instructions Release the top and bottom cover latches and remove the air cleaner cover. Wash the cover and Vacuator™ valve. Check that these com- ponents are in good condition. The Vacuator™ valve is subject to wear and deterioration and should be replaced yearly or when damaged.

  • Page 60: Kohler Air Cleaner (Secondary)

    Maintenance Instructions Kohler Air Cleaner (Secondary) NOTE: The Kohler Air Cleaner should only be ser- viced more often than a yearly interval if there are indications that the Donaldson Radialseal ry) has failed. • Foam Precleaner An oiled, foam precleaner surrounds the paper ele- ment of the Kohler engine air cleaner system.

  • Page 61: Engine Cooling System

    Maintenance Instructions Paper Element Gasket - Lightly Grease to Improve Sealing Action Rubber Seal Air Cleaner Base Plate (Check Sealing Surface) Air Filter Reinstallation Engine Cooling System Air Intake System To prevent engine overheating and possible engine damage, clean grass clippings, chaff, and dirt from the rotating engine air intake screen after every 8 hours of operation.

  • Page 62: Grass Buildup In Mower Housing

    Maintenance Instructions Grass Buildup in Mower Housing Non-Tilting Decks DANGER Before raising or removing the mower deck for cleaning, stop the engine, re- move the ignition key, and disconnect the spark plug wires. Raise the deck and secure it in the UP position by hooking the deck lift rod into the body bracket below the counterweight spring clip.

  • Page 63: Ghs Blower

    Maintenance Instructions NOTE: While some degree of material buildup in the mower deck housing can be tolerated, a point is finally reached where cutting quality deteriorates and clogging begins to occur because of too much buildup on the baffling and housing.

  • Page 64: Hydrostatic Transmission Cooling Fins

    Maintenance Instructions Hydrostatic Transmission Cooling Fins Keeping the cooling fins on the hydrostatic transmis- sions clean and free of obstruction is essential to avoid overheating the transmission fluid and short- ening transmission life. The cooling fins should be checked every 100 hours; and cleaned if necessary. To clean the fins, use compressed air and/or a pres- sure washer.

  • Page 65: Cleaning The Terminals

    Maintenance Instructions Replace filler caps. IMPORTANT: DO NOT overfill 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 from the mower.

  • Page 66: Drive Belts

    Maintenance Instructions 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. If the blade cutting edge is dull or nicked, it should be sharpened. 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...

  • Page 67: Mower Deck Gearbox Oil Seals

    Maintenance Instructions Mower Deck Gearbox Oil Seals The mower deck gearbox seals should be inspected every 25 hours for evidence of oil leaking; particu- larly the lower oil seal on 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 environment.
  • Page 68 Maintenance Instructions REPLACING/REPAIRING Jackshaft Drive Belt Engine PTO Belt GHS Blower Belt (GHS Model Only) Hydrostatic Ground Drive Belt Belt Locations...

  • Page 69: Engine Pto Drive Belt

    Maintenance Instructions Engine PTO Drive Belt (3 Groove Power Band) To remove the engine PTO drive belt: Remove the jackshaft drive belt from its idler pulley (by pushing down on idler pul- ley) and let the belt drop down out of the way.

  • Page 70: Jackshaft Drive Belt

    Maintenance Instructions Jackshaft Drive Belt To remove the jackshaft drive belt: Remove the engine PTO drive belt, as described in previous section. Jackshaft Jackshaft Drive Belt Tension Spring Reverse the removal procedure to replace the jackshaft drive belt. Jackshaft Jackshaft Drive Belt Tension Spring Relax the belt by depressing the spring-...

  • Page 71: Ghs Blower Drive Belt

    Maintenance Instructions GHS Blower Drive Belt Remove the GHS blower drive belt by unhook- ing the belt tension spring from the hook on the chassis frame (located above the blower pul- ley). Lift the belt tightener idler pulley up and roll belt off the pulleys.

  • Page 72: Hydrostatic Ground Drive Belt

    Maintenance Instructions Hydrostatic Ground Drive Belt To remove the hydrostatic ground drive belt: Raise the spring-loaded belt tightener arm and idler pulley to relax belt. Ground Drive Belt Hydrostatic Ground Drive Belt Assembly (Disengaged) Reverse the procedure to install the hydrostatic ground drive belt.

  • Page 73: Fuel Filter

    Maintenance Instructions Fuel Filter Model MT is equipped with an in-line fuel filter. Vi- sually inspect the filter periodically, and replace the filter yearly. 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 dirt.

  • Page 74: Mower Blades

    Reinstall the blades following procedure from Sharp- en Mower Blades instructions. If blades are re- placed, always use Walker original equipment blades to ensure safety and optimum performance. The quality and performance of replacement blades offered by other manufacturers cannot be guar- anteed, they could be dangerous.

  • Page 75: Ghs Blower Assembly

    Maintenance Instructions NOTE: With oil flow throughout the unitized gear drive assembly; if one gearbox has internal damage or excessive wear, the remaining gear- boxes and connector tubes should be complete- ly disassembled and thoroughly flushed out with solvent before reassembly. Drain and properly dispose of oil.

  • Page 76: Blower Wheel Removal

    Maintenance Instructions Remove the blower assembly from the chassis as follows: Remove the blower skid bar by removing front and rear mounting bolts from the skid bar (underneath the blower) and removing the bolt connecting the blower housing to the skid bar. Remove the blower belt tightener idler arm assembly by removing the pivot bolt.

  • Page 77: Adjustments

    Maintenance Instructions ADJUSTMENTS DANGER If the engine must be running to perform a maintenance adjustment, keep hands, feet, and clothing from moving parts. DO NOT wear jewelry or loose clothing. Safety Switches There are three (3) safety interlock switches on the tractor.

  • Page 78: Blade Clutch (Pto)

    Maintenance Instructions Blade Clutch (PTO) Clutch Engagement/Belt Tension The clutch engagement and PTO belt tension are adjusted using the clutch actuator rod. Initially, after installing a new PTO belt, after 10 hours and every 100 hours thereafter, check and adjust for the two dimensions in the clutch actuator rod as shown in the PTO Clutch Engaged and PTO Clutch Disen- gaged illustrations.

  • Page 79: Clutch Disengagement/Brake Action

    Maintenance Instructions Clutch Disengagement/Brake Action WARNING It is important to check and maintain blade brake action for safe operation of the machine. Blade Clutch Idler Pulley The declutched or disengaged position of the blade clutch idler pulley is adjustable and is set to give belt release without excessive slack and to apply the blade brake.

  • Page 80: Stop Block Eccentric Adjustment

    Maintenance Instructions Use the following procedures to check and adjust clutch disengagement and brake action: Stop Block Eccentric Adjustment - Step 1 Use the stop block attached to PTO belt tightener arm to set the bottom position of the clutch idler pul- ley in the disengaged position.

  • Page 81: Transmission Control

    Maintenance Instructions Blade Clutch Idler Pulley Stop Block PTO Belt Tightener Blade 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 set at the factory at 8-1/4 in.

  • Page 82: Steering Lever End Play Adjustment

    Maintenance Instructions Tighten the jam nut on the forward travel stop adjusting bolt. Steering Lever Actuator Arms Forward Travel Stop Bolt Steering Adjustment Nut Forward Speed Control Stop and Steering Lever Adjustment Steering Lever End Play Adjustment - Step 2 Position the FSC lever to the most FORWARD position.

  • Page 83: Straight Ground Travel Adjustment

    Maintenance Instructions Straight Ground Travel Adjustment - Step 4 Sit in the seat, start the engine (operate at nor- mal speed), and with the FSC in the NEUTRAL- PARK position check for forward movement of either drive wheel (if either wheel moves backward, refer back to Neutral Function Ad- justment - Step 3 and readjust).

  • Page 84: Tilt-Up Deck Adjustable Stop

    Maintenance Instructions Tilt-Up Deck Adjustable Stop When the carrier frame hinge joint is properly adjust- ed, the deck lock levers should move in and out of the engaged and disengaged positions freely. All four hitch pins used for height adjustment should sit flush on the washers above the deck pin bushing.

  • Page 85: Ghs "Full" Signal Horn With Grass-Pak ® Switch

    Maintenance Instructions Preliminary Setting: Turn the idle mixture nee- dle valve out (counterclockwise) 1-1/2 turns from the closed position. This initial adjust- ment will allow the engine to be started and warmed up prior to the final adjustment. Low Idle Mixture (May be Non-Adjustable) Idle Speed Fixed Main Jet Under...

  • Page 86: (When Horn Sounds At The Wrong Time)

    Maintenance Instructions WARNING DO NOT test the Grass-Pak the engine running. Projectiles CAN be thrown out of the grass delivery spout and CAN cause serious injury to bystanders or property damage. ® Grass-Pak Vane Switch Checking the Grass-Pak Adjustment (When Horn Sounds at the Wrong Time) Very little, if any, adjustment to the Grass-Pak switch is required.

  • Page 87: Wiring Diagram

    Maintenance Instructions ELECTRICAL SYSTEM Wiring Diagram - Model MT...

  • Page 88: Operator's Notes

    Operator’s Notes...
  • Page 89 Operator’s Notes...
  • Page 90 Operator’s Notes...

  • Page 91: Warranty

    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 Man- ufacturing Company, 5925 East Harmony Road, Ft. Collins, CO 80528. Proof of the date of purchase may be required to verify warranty coverage.
  • Page 92 < 5 mph (< 8 kmh) Humidity: Humidity: Barometric Pressure: 24.9" HG (759 mm Hg) Barometric Pressure: 24.9" HG (759 mm Hg) WALKER MFG. CO. 5925 E. HARMONY ROAD, FORT COLLINS, CO 80528 (970) 221-5614 FORM NO. 101298 10 (C) OPERATOR 0.7g 10 (C)

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