OWNER’S MANUAL Safety, Assembly, Operating, and Maintenance Instructions Model MC (20 HP) ™ Please Read and Save These Instructions For Safety, Read All Safety and Operation Instructions Prior to Operating Machine Effective Date: 03-01-07 P/N 6000-13
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 customers. If for any reason this product does not perform to your expectations, please contact us at (970) 221-5614. Every customer is important to us. Your satisfaction is our goal. Please. . .
Table of Contents General Information ________________ 1 Operating Instructions_____________ HIGHLIGHTED INFORMATION _____________ GLOSSARY ____________________________ IDENTIFYING NUMBER LOCATIONS________ ENGINE SERIAL NUMBER LOCATION ______ SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS ______________ CONTROL IDENTIFICATION, LOCATION, AND FUNCTION _____________ Ignition Switch _______________________ Engine Choke________________________ Engine Throttle ______________________ Forward Speed Control (FSC)
Table of Contents Maintenance Instructions __________ 41 MAINTENANCE SCHEDULE CHART _______ IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE _______________ Fuel System _________________________ Starting/Stopping _____________________ Cooling System ______________________ Air Cleaner System ___________________ Oil _________________________________ LUBRICATION _________________________ Engine Oil ___________________________ Engine Break-In Oil __________________ Checking Engine Crankcase Oil Level ___ Changing E
General Information HIGHLIGHTED INFORMATION Walker Manufacturing recommends that any service 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 operation or maintenance of a Walker Mower are caused by disregarding basic safety precautions or specific warnings. Such accidents, in most cases, can be prevented by being aware of the dangers present.
General Information SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS Serial Number Tractor Serial Number Location The detailed servicing and repair of the engine, hydrostatic transmission, and gearboxes are not covered in this manual. Only routine maintenance and general service instructions are provided. For the service of these components during the limited warranty period, it is important to find a local, authorized servicing agent of the component manufacturer.
Specifications MODEL MC ENGINE Manufacturer/Model Kohler Command CH20, 2 Cyl., Gasoline (Air-Cooled) Displacement 38.1 cu. in. (624 cc) HP (@ 3600 RPM) 20.0 Max. RPM (No Load) 3750 Governed RPM 3600 Max. Torque [ft-lb (N·m) @ RPM] 32 (43) @ 2500 Idle RPM 1200 ± 75 Spark Plug Type Champion® RC12YC Spark Plug Gap .030 in. (.76 mm) Crankcase Capacity 2 qts (1.
Specifications MODEL MC TRANSMISSION (continued) Neutral Transmission Release by Manual Dump Valve Final Drive Gear Drive Axle Transmission Fluid Factory Service Mobil 1 Synthetic Motor Oil (15W-50) Alternate Transmission Fluid SAE 30W Straight Viscosity Motor Oil Transmission Fluid Capacity 1 qt (1 liter) Transmission Cooling Cooling Fan Mounted on Drive Pulley Ground Travel Speed Forward m.p.h. (km/h) Reverse m.p.h.
Specifications MODEL MC DIMENSIONS (continued) Width 36 in. (91 cm) SD Model (with Deflector) 41-3/4 in. (106 cm) 42 in. (107 cm) SD Model (with Deflector) 47-3/4 in. (121 cm) 36 in. (91 cm) GHS Model 37 in. (94 cm) 42 in. (107 cm) GHS Model 43 in. (109 cm) Height SD Model 37-1/2 in. (95 cm) GHS Model 49-1/2 in. (112 cm) Wheel Base (Tractor) 42-1/4 in. (107 cm) Tread Width (Tractor) Standard Tires 28-1/4 in. (72 cm) Optional Tires 29-3/4 in.
Specifications MODEL MC DRIVE BELTS Engine PTO Walker P/N 8230 Jackshaft Drive Gates 3VX385 (or Walker P/N 6251-1) Ground Drive, Micro-V Walker P/N 7248 Blower (GHS Model) Walker P/N 7234-1 GHS SYSTEM (Optional) Blower 4-1/2 x 10-1/2 x 1/2 in. (11 x 27 x 1 cm) Three-Blade Paddle Wheel (Driven by Mower Engine) Blower Brake Band Brake (Works in Combination with PTO Clutch, Stops Blower within Five (5) Seconds of PTO Disengagement) Max.
Component Identification NOTE: Control Identification shown in Operating Instructions section. Turbine Precleaner Catcher Door Safety Latch Grass Handling System 9.
Component Identification Removable Grass Catcher Screen (Not Visible) Catcher Exhaust Deflector Catcher Door Gas Spring Catcher Door Gas Spring Protective Cover Catcher Lift / Dump Handle Catcher Door Catcher Door Handle Muffler Left Hand Drive Wheel Tailpipe Oil Filter Oil Drain Plug Tailwheel Fork and Wheel Rear View and Left Side View 8 Anti-Scuff Roller
Component Identification Rubber Bumper (Body Support) Air Restriction Indicator (Not Visible) Donaldson Air Cleaner Air Cleaner Cover Rubber Bumper (Body Support) Muffler Fuel Pump Air Intake Hose Muffler Heat Shield Precleaner Tube Throttle and Choke Linkage Oil Fill/ Dipstick Fuel Tank Cap Jackshaft PTO Gearbox Dipstick GHS Blower Turbine Precleaner RH Hydrostatic Transmission RH Transmission Lockout Lever Neutral Safety Switch PTO Clutch Lever LH Hydrostatic Transmission Positive (+) Bat
Safety Instructions Pay particular attention to any information labeled DANGER, WARNING, CAUTION, IMPORTANT, and NOTE in this manual. When you see the Safety Alert Symbol ( ), read, understand, and follow the instructions. Failure to comply with safety instructions may result in personal injury.
Safety Instructions 6. 7. 8. 9. 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. Prolonged exposure to loud noise can cause impairment or loss of hearing.
Safety Instructions 9. Watch for holes, rocks, and roots in the terrain and for other hidden hazards. When mowing tall grass, mow higher than desired to expose any hidden obstacles. Then, clean the area and mow to the desired height. 10. Avoid sudden starts or stops. Before backing the machine up, look to the rear to be sure no one is behind the machine. Watch carefully for traffic when crossing or working near roadways. 17. For GHS equipped models, use care when closing the grass catcher door.
Safety Instructions 2. To reduce fire hazards, keep the engine free of grass, leaves, excessive grease, and dirt. 3. Keep all nuts, bolts, and screws tight to ensure the machine is in a safe, working condition. Check the blade mounting nuts frequently, making sure they are tight. 4. Perform only maintenance instructions described in this manual. Unauthorized maintenance operations or machine modifications may result in unsafe operating conditions. 5.
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.
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.
Assembly Instructions SETUP INSTRUCTIONS Dry Battery Service Walker Mowers are shipped partially assembled. After uncrating the tractor and mower deck, initial setup is required. DANGER Activating a battery can be dangerous. The battery should be taken to a reliable service station, battery store, or power equipment dealer where a trained technician can activate the battery safely. DO NOT attempt to activate the battery unless you are experienced in battery service work.
Assembly Instructions 3. After the battery is filled with electrolyte, replace the filler caps and charge the battery. Refer to Battery Charging. Battery Charging DANGER Install the battery in the mower as shown in Battery Installation photo. Connect the positive and negative cables to the proper battery terminal (red cable and boot connects to the Positive (+) terminal). Slide the rubber boot up and over the battery post, making sure it covers the post completely to prevent an electrical short.
Assembly Instructions Deck Discharge Shield Installation (Side Discharge Models Only) Grease Fitting Locations Attach the deck side discharge shield by positioning the shield hinge lug in front of the deck mount and fastening with two 3/8-16 x 1-1/4 in. bolts, 3/8-16 ESNA nuts, and 3/8 in. wave spring washers. The wave washers fit between the two hinging surfaces. Tighten the nuts until the shield moves freely but is not loose. Spacer Washer Axle Spacer Tube WARNING Deck Caster Wheel Installation 5.
Assembly Instructions 4. Attach Spring Reaching under the tractor, join the PTO tube to the PTO shaft (align arrow decals). Slide the PTO tube onto the spline shaft on the tractor PTO gearbox. NOTE: When installing the DSD52 Mower deck, make sure to retract the dolly wheel after mounting the deck on the tractor.
Assembly Instructions IMPORTANT: To prevent damage to the mower, make sure the PTO shaft assembly is securely locked on the tractor, with the locking balls fully seated in the groove and the ring in the full forward position (refer to the Coupler Ring “Locked” Position photo). After installation, pull on the shaft to check for security. Spring-Loaded Coupler Ring In Fully Forward Position 9. With the counterweight springs connected, the weight on the deck caster wheels should be 15 to 25 Ib (6.8 to 11.
Assembly Instructions Deck Leveling 1. 2. Check the side-to-side level. Rotate each blade sideways and measure the distance from blade tip to ground on each side. If measurements vary more than 1/8 in. (3 mm), add a washer shim under the deck support pins on the low side to level the deck. 3. Check the front-to-rear level. Rotate the blades to point forward. Measure the distance from blade tip to ground on the front and rear. The rear of the blade should be 1/8 to 1/4 in.
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. (For a mower with frequent operation, some of these items will not need to be checked every day, but the operator should be aware of the condition of each.) For proper fuels and lubricants refer to Specifications.
Assembly Instructions CHECK TIRE PRESSURE DANGER Deck Caster Wheel = 20 PSI (137 kPa) Drive = 15 PSI (103 kPa) Rear = 20 PSI (137 kPa) Do not operate the mower with deck in tiltup position. Do not move the tractor with the deck in the tilt-up position. CHECK AND CLEAN GRASS BUILDUP UNDERNEATH MOWER DECK (and inside GHS blower, if equipped) Refer to CLEANING the GHS Blower in Maintenance Instructions for blower cleaning information.
Operating Instructions CONTROL IDENTIFICATION, LOCATION, AND FUNCTION CAUTION Before operating the mower, become familiar with the location and function of all operator controls. Knowing the location, function, and operation of these controls is important for safe and efficient operation of the mower. Ignition Switch The ignition switch is located on the right front of the body and is used to start and stop the engine.
Operating Instructions 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 backward toward the IDLE position decreases engine speed. Throttle Choke NOTE: Pushing forward on the steering levers will not cause any change in tractor motion - there will be no steering lever reaction and there will be no machine damage.
Operating Instructions Lockout Levers *** In normal operating conditions, oil changes in 100-hour intervals are acceptable. Walker and the engine manufacturers recommend engine oil changes every 50 hours in extremely dirty or dusty conditions or for units with less than 100 hours annual use. NOTE: The blinking hour glass on the display means that the meter is operating properly.
Operating Instructions The Forward Speed Control also Establishes the Neutral-Park Position of the Steering Levers LEFT WHEEL STEERING LEVER RIGHT WHEEL STEERING LEVER FORWARD SPEED CONTROL LEVER (FSC) Full Forward Ground Speed Position Forward Position (No Control Change) Intermediate Ground Speed Position Neutral-Park Position Reverse Drive Wheel Motion Position Neutral-Park Position PARKING BRAKE Disengaged Position Fast Throttle Position Engaged Position Disengaged Position Idle Position TH
Operating Instructions STARTING THE ENGINE IMPORTANT: If the engine fails to start after approximately 10 seconds of cranking, the engine should be checked before further cranking. Turn the key to the OFF position and allow a 60 second cool-down period between starting attempts. Failure to follow these guidelines can damage the starter motor and shorten battery life. CAUTION Before operating the mower, read and understand all Safety Instructions and Operating Instructions. 3.
Operating Instructions 1. Move the FSC out of NEUTRAL-PARK position to the desired forward speed. DO NOT hold forward on steering levers. It is not necessary to hold the FSC lever in position since a friction lock maintains the selected lever position (and forward travel speed). WARNING In case either of the transmission drive belts break during operation, and if the machine is on a slope, the machine will freewheel down the slope.
Operating Instructions ENGAGING THE MOWER Pull Steering Levers With Left Hand Forward Speed Control (FSC) 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. Remember to keep the engine and ground speed slow until learning the control response. 4. 5. The FSC may be adjusted forward for faster ground speed and backward for slower ground speed.
Operating Instructions WARNING A brake stops the cutter blades (and blower on GHS equipped models) from freewheeling within five (5) seconds after disengaging the clutch. If the brake system malfunctions and the blades do not stop within five (5) seconds, the brake should be adjusted or repaired before operating the mower. Contact your Walker Dealer. Engaged Position 4. Slow the engine to idle, put throttle in IDLE position; and turn the ignition switch OFF.
Operating Instructions Cutting height is adjusted by positioning the four retainer hitch pins in a series of seven vertical holes on the deck support pins. Lift handles have been provided on each end of the deck to assist in raising the deck while positioning the hitch pins. Cutting heights range from 1 in. (25 mm) [top holes] to 4 in. (102 mm) [bottom holes] in 1/2 in. (13 mm) increments.
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).
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 recommendations are offered: • Do not move the tractor with the deck in the tiltup position since both the roller wheels (on the back of the deck) and the GHS discharge chute may be damaged by moving the tractor. The tilt-up configuration should only be used when the tractor is parked.
Operating Instructions GRASS HANDLING SYSTEM (GHS) GHS Model Only Exhaust Screen (Removable) Catcher Door Safety Latch Grass-Pak® Vane Switch Powerfil ® Drive Motor Exhaust Deflector Actuator Rod “Full” Signal Horn Delivery Chute Catcher Door PTO Clutch Catcher Door Spring Shear Pin PTO and Blade Gear Drive Grass Catcher Shear Bolt Dump Handle Powerfil ® Delivery Spout Body Chute Assembly Blower Deck Discharge Chute Rear Discharge Mower Deck GHS Flow and Components 35
Operating Instructions General Information The Grass Handling System (GHS) consists of a rear discharge mower deck connected to a 10.5 in. (27 cm) blower and a rear mounted grass catcher with 9.5 bushel (335 liters) capacity or optional 6.7 bushel (238 liters) capacity. The GHS blower operates any time the mower blade clutch is engaged and moves grass through the rear discharge deck chute into the grass catcher. Blower airflow is exhausted out the back of the grass catcher, through a filtering screen.
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 attempting to unclog. DANGER NEVER place hands under the mower deck or in the GHS blower discharge chute. Use a stick or similar tool to remove any clogged material.
Operating Instructions NOTE: An optional exhaust screen with larger holes (3/4") is available for use when mowing in wet grass; the screen provides less airflow restriction and more clog resistance (use standard screen in dry conditions to avoid excessive material blowing out of the catcher). Remember, anything that restricts airflow or material flow along the entire path from the mower deck to the grass catcher can cause clogging.
Operating Instructions Dumping the Catcher Using the Dump Bag 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. 1. Tailgate Dumping 1. NOTE: To prevent accidental door closure, a safety latch locks the door open in the fully opened position while the catcher is being dumped. 2.
Operating Instructions Catcher Lift / Dump Handle Dumping Catcher into Dump Bag 40 5. Lower the catcher smoothly down to the normal operating position. DO NOT allow the catcher to drop down. 6. Close the door by holding the door handle with the left hand and releasing the safety latch on the door hinge mechanism with the right hand. The safety latch is released by pressing in on the top of the latch. Then, smoothly close the door, working against the spring pressure that holds the door closed.
Maintenance Instructions CAUTION Maintenance procedures requiring special training or tools should be performed by a trained technician.
Maintenance Instructions IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE Fuel System • Fuel must be clean - free from water, dirt, and organic material. • Change fuel filter on a regular basis and when contamination is suspected or found in the fuel. Starting/Stopping • Start engine with the throttle advanced off idle (1/4 to 1/2 throttle). This will aid starting, especially in cold weather. • Keep the battery fully charged.
Maintenance Instructions LUBRICATION LUBRICATION 4. WARNING IMPORTANT: DO NOT operate engine without a sufficient oil supply in the crankcase. DO NOT operate with the oil level below the “L” mark or above the “F” mark on the dipstick. DO NOT attempt to lubricate the machine with the engine running. Disengage the PTO clutch, shut off the machine, and remove the ignition key. 5. Proper lubrication is an important maintenance procedure. It reduces wear and makes the machine quieter and easier to operate.
Maintenance Instructions 1. Park the mower on a level surface with the engine 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. 2. Before removing the dipstick, clean the area around it to keep any dirt or debris out of the engine. 3. Remove the dipstick and oil drain plug and drain the oil into a suitable container. Be sure to allow ample time for complete drainage.
Maintenance Instructions Blade Drive Gearboxes LUBRICATION DSD52 Mower Deck Lubrication There are several special lubrication requirements for the DSD52 mower deck in addition to the requirements detailed in the Chassis and Deck Lubrication illustration. Lubricate the locations shown in the Blade Spindle Lubrication and Gearbox, Dolly Wheel, and U-Joint Lubrication photos and check and maintain oil in the belt drive gearbox. 1.
Maintenance Instructions Belt Drive Gearbox Dolly Wheel Pivot LUBRICATION Changing Gearbox Oil The tractor PTO gearbox is oil filled. No scheduled oil change is required. However, changing the oil after the first 100 hour break-in period will extend gearbox life and is recommended. 1. Remove the drain plug in the bottom of the gearcase, drain the oil, and reinstall the plug. 2. Refill the gearbox through the dipstick standpipe using 7 to 8 fl. oz. (21 to 24 cl) of SAE E.P.
Maintenance Instructions 2. Remove the reservoir cap and check the level of the fluid. The reservoir has a fluid level COLD mark and HOT mark. The reservoir oil level should ALWAYS be at or above the COLD mark and NEVER above the HOT mark. Reservoir Cap Hot Level Cold Level Air Bleed Plug LUBRICATION IMPORTANT: DO NOT overfill the transmission reservoir. This will result in oil leaking out of the reservoir cap vent when the transmission warms up.
Maintenance Instructions Ident No.
Maintenance Instructions 1 2 LUBRICATION 1 2 3 4 4 5 6 7 6 6 7 6 8 9 10 12 8 11 13 13 14 19 14 15 16 28 & 35 17 27 & 34 18 33 19 32 31 20 30 29 22 28 21 27 21 25 26 24 23 26 Chassis and Deck Lubrication Points 49
Maintenance Instructions CLEANING CLEANING Turbine Precleaner Engine Air Cleaner System The turbine precleaner is mounted on a remote air intake tube connected to the Donaldson air cleaner. A spinning fan driven by the intake airflow separates dust from the air, giving the initial stage of air cleaning. Dust particles are exhausted through a single small vent in the side of the housing. Since no dust is trapped, the precleaner operates without cleaning.
Maintenance Instructions CLEANING Donaldson Radialseal™ Air Cleaner A remote mounted Donaldson Radialseal™ air cleaner provides the air filtering function. The paper filter element slides over an outlet tube inside the air cleaner canister with radial sealing action, eliminating the possibility of dust leaks due to improper filter installation. Intake design, internal baffling, and a Vacuator™ valve provide dust separation and automatic precleaning action.
Maintenance Instructions 4. Use a bright light inside the element to inspect for damage. Check the element very carefully for pin holes or other damage that will allow dirt to leak through the paper media. Replace element if necessary. 5. Without removing, visually inspect the condition of the safety filter for damage or holes. The safety filter should only be removed for yearly replacement (or when dirty or damaged). 6.
Maintenance Instructions CLEANING Cylinder Head Cooling Fins It is essential for performance and longevity of the air-cooled engine to keep the cylinder head cooling fins clean and free of obstruction. After every 8 hours of operation, check the performance of the cooling system by starting the engine, holding a hand adjacent to the cylinder head, and feeling the cooling airflow. If there is little or no airflow, clean the cooling fins as described below.
Maintenance Instructions DANGER CLEANING 1. Do not operate the mower with deck in tiltup position. Do not move the tractor with the deck in the tilt-up position. 3. 4. IMPORTANT: With the belt removed, the blower wheel must spin freely. Any binding or dragging of the wheel is an indication of dirt buildup. This buildup must be cleaned to avoid abrasive wear of the blower blades, excessive power loss and eventual loss of blower performance (clogging).
CLEANING/ CHECKING/SERVICING Maintenance Instructions GHS Exhaust Screen CHECKING/SERVICING Refer to Cleaning the GHS Exhaust Screen in Operating Instructions. DANGER Hydrostatic Transmission Cooling Fins Keeping the cooling fins on the hydrostatic transmissions clean and free of obstruction is essential to avoid overheating the transmission fluid and shortening transmission life. The cooling fins should be checked every 100 hours; and cleaned if necessary.
CHECKING/SERVICING Maintenance Instructions IMPORTANT: DO NOT overfill the battery. Electrolyte will overflow through the vented caps onto parts of the machine and WILL result in severe corrosion. Tire Pressure Cleaning the Terminals Deck Caster Wheel = 20 PSI (137 kPa) Drive = 15 PSI (103 kPa) Rear = 20 PSI (137 kPa) If battery terminals are corroded, remove battery from the mower. Using a wire brush, remove corrosion with a solution of one part baking soda and four parts water.
CHECKING/SERVICING Maintenance Instructions 6. 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 using a rag or a thick, padded glove, while loosening and removing the nut, lock washer, and flat washer that mounts the blade. 5.
CHECKING/SERVICING/ REPLACING/REPAIRING Maintenance Instructions Mower Deck Gearbox Oil Seals The mower deck gearbox seals should be inspected every 25 hours for evidence of oil leaking; particularly the lower oil seal on the blade drive gearbox. 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 operating in an adverse environment.
Maintenance Instructions REPLACING/REPAIRING Jackshaft Drive Belt Engine PTO Belt GHS Blower Belt (GHS Model Only) Hydrostatic Ground Drive Belt Belt Locations 59
Maintenance Instructions REPLACING/REPAIRING Engine PTO Drive Belt (3 Groove Power Band) 1. c. Raise the clutch lever (engage position) to lift the clutch idler away from the belt. d. Next remove the belt from the engine pulley and then the PTO drive pulley. To remove the engine PTO drive belt: a. Remove the jackshaft drive belt from its idler pulley (by pushing down on idler pulley) and let the belt drop down out of the way.
Maintenance Instructions REPLACING/REPAIRING Jackshaft Drive Belt 1. b. Relax the belt by depressing the springloaded idler arm. c. Roll the belt off the jackshaft pulley and remove. To remove the jackshaft drive belt: a. Remove the engine PTO drive belt, as described in previous section. Push Idler Pulley Down to Relax Belt Jackshaft Idler Pulley Jackshaft Drive Belt Engine Pulley Tension Spring Jackshaft Drive Belt (Disengaged) 2.
Maintenance Instructions REPLACING/REPAIRING GHS Blower Drive Belt 1. Remove the GHS blower drive belt tension by depressing the idler pulley on the tightener arm. Roll the belt off the blower pulley. The belt should be clear of the blower pulley, allowing free movement of the blower wheel.
Maintenance Instructions REPLACING/REPAIRING Hydrostatic Ground Drive Belt 1. To remove the hydrostatic ground drive belt: a. b. Slide belt off pulleys, then release the idler. Raise the spring-loaded belt tightener arm and idler pulley to relax belt. Belt Tightener Arm Jackshaft Idler Pulley Transmission Drive Pulley Spring Hydrostatic Ground Drive Belt Hydrostatic Ground Drive Belt Assembly (Disengaged) 2. Reverse the procedure to install the hydrostatic ground drive belt.
Maintenance Instructions REPLACING/REPAIRING Fuel Filter Blade Overload Shear Bolts Model MC is equipped with an in-line fuel filter. Visually inspect the filter periodically, and replace the filter yearly. The 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 blade encounters a shock load.
Maintenance Instructions REPLACING/REPAIRING PTO Shear Pin Mower Blades The PTO drive shaft connection to the deck gearbox has a shear pin to provide shock load protection to the mower deck drive. This system provides primary shock protection in case of blade impact and will normally shear before the individual shear bolts on the blade hub. Mower blades are removed and remounted as described in Sharpen Mower Blades instructions.
REPLACING/REPAIRING/ ADJUSTMENTS Maintenance Instructions Reinstall the blades following procedure from Sharpen Mower Blades instructions. If blades are replaced, 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 guaranteed, they could be dangerous. CAUTION ALWAYS use genuine factory replacement parts.
LIMITED WARRANTY FOR WALKER COMMERCIAL RIDER MOWER 1. 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.
Lwa 105 Sound - Model MC Vibration - Model MC Sound Test Vibration Level Sound test conducted was in accordance with 79/113/EEC and was performed on 28 January 98 under the conditions listed: 0.7g Vibration levels at the operators handles were measured in the vertical, lateral, and longitudinal directions using calibrated vibration test equipment.
