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OWNER’S MANUAL
Safety, Assembly, Operating, and Maintenance Instructions
Model MT (20.0 / 25.0 HP)
(Covers Serial Numbers 95-21329 and on)
™
Please Read and Save These Instructions Effective Date: 08-14-98
For Safety, Read All Safety and Operation P/N 8000-1
Instructions Prior to Operating Machine Price $5.00
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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. Every customer is important to us. Your satisfaction is our goal. Please. . .read this manual thoroughly! This manual is to be used in conjunction with the engine manufacturer’s manu
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Table of Contents General Information ________________ 1 Operating Instructions_____________ 24 HIGHLIGHTED INFORMATION _____________ 1 CONTROL IDENTIFICATION, GLOSSARY ____________________________ 1 LOCATION, AND FUNCTION _____________ 24 IDENTIFYING NUMBER LOCATIONS________ 1 Operating Controls ___________________ 24 ENGINE SERIAL NUMBER LOCATION ______ 2 Engine Choke_______________________ 24 Engine Throttle ______________________ 25 SERVICING OF ENGINE Forward Speed Control (FSC) _____
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Table of Contents Fuel Lines and Clamps ________________ 63 Maintenance Instructions __________ 44 Engine Starter _______________________ 63 MAINTENANCE SCHEDULE CHART _______ 44 Blade Brake Action ___________________ 63 IMPORTANT TIPS REPLACING/REPAIRING ________________ 63 FOR CARE OF THE KOHLER ENGINE _____ 45 Drive Belts __________________________ 63 Fuel System _________________________ 45 Engine PTO Drive Belt ________________ 65 Starting/Stopping _____________________ 45 Jackshaft
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General Information HIGHLIGHTED INFORMATION • POWER TAKE-OFF (PTO) transmits engine power to run the cutter blades and GHS blower. Walker Manufacturing recommends that any ser- vice requiring special training or tools be performed • POWERFIL spreads the mowed material by an authorized Walker Mower Dealer. There are throughout the interior of the grass catcher by several general practices to be aware of in the area an oscillating delivery spout. of safety. Most accidents associated with the
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General Information SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS The detailed servicing and repair of the engine, hydrostatic transmission, and gearboxes are not cov- Serial Number ered in this manual. Only routine maintenance and general service instructions are provided. For the service of these components during the limited war- ranty period, it is important to find a local, authorized servicing agent of the component manufacturer. Any unauthorized work done on these compo- nents during th
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Specifications MT 20.0 HP MT 25.0 HP MODEL ENGINE Manufacturer/Model Kohler CH20, 2 Cyl., Kohler CH25, 2 Cyl., Gasoline (Air Cooled) Gasoline (Air Cooled) Displacement 38.1 cu. in. (624 cc) 44.0 cu. in. (725 cc) HP (@ 3600 RPM) 20.0 25.0 Max. RPM (No Load) 3750 3750 Governed RPM 3600 3600 Max. Torque [ft-lb (N⋅m) @ RPM] 32 (43.4) @ 2500 39.5 (53.6) @ 2400 Idle RPM 1200 ± 75 1200 ± 75 Spark Plug Type Champion RC12YC Champion RC12YC Spark Plug Gap .030 in. (.76 mm) .030 in. (.76 mm) Crankcas
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Specifications MT 20.0 HP MT 25.0 HP MODEL TRANSMISSION (continued) Service Brake Dynamic Braking through Dynamic Braking through Hydrostatic Transmission Hydrostatic Transmission Parking Brake Mechanical Pin Lock in Mechanical Pin Lock in Transmission Gear Transmission Gear Neutral Transmission Release by Transmission Release by Manual Dump Valve Manual Dump Valve Final Drive Gear Drive Axle Gear Drive Axle Transmission Fluid Factory Service SAE 30W Straight Viscosity SAE 30W Straight Viscosity
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Specifications MT 20.0 HP MT 25.0 HP MODEL TIRE PRESSURE Deck Caster Wheel 20 PSI (137 kPa) 20 PSI (137 kPa) Drive 15 PSI (103 kPa) 15 PSI (103 kPa) Rear 20 PSI (137 kPa) 20 PSI (137 kPa) DIMENSIONS (Tractor and Mower)* Length 91 in. (231 cm) 91 in. (231 cm) Width 49 in. (124 cm) 49 in. (124 cm) Height 44 in. (112 cm) 44 in. (112 cm) Wheel Base (Tractor) 42-1/4 in. (107 cm) 42-1/4 in. (107 cm) Tread Width (Tractor) 29-3/4 in. (76 cm) 29-3/4 in. (76 cm) MOWER DECK Width of Cut SD/GHS 42 or 48 in
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Specifications MT 20.0 HP MT 25.0 HP MODEL DRIVE BELTS Engine PTO Walker P/N 8230 Walker P/N 8230 Jackshaft Drive Gates 3VX355 Gates 3VX355 (or Walker P/N 6231) (or Walker P/N 6231) Ground Drive, Micro-V Walker P/N 7248 Walker P/N 7248 Blower (GHS Model) Gates 3VX280 Gates 3VX280 (or Walker P/N 7234) (or Walker P/N 7234) GHS SYSTEM (Optional) Blower 4 x 10 x 1/4 in. (10 x 25 x 1 cm) 4 x 10 x 1/4 in. (10 x 25 x 1 cm) Three-Blade Paddle Wheel Three-Blade Paddle Wheel (Driven by Mower Engine) (Dr
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Component Identification NOTE: Control Identification shown in Operating Instructions section. Turbine Catcher Door Grass Handling System Precleaner Safety Latch 7.0 Bushel Catcher Tilt-Up Spring Clip Latch Transmission Control Rod Adjustment Nut (LH) Anti-Scuff Roller Deck Support Pins and Height Adjustment Catcher Lift / Hitch Pins Dump Handle Fuel Tank and Cap Counterweight Spring and Protective Cover Transmission Control Rod Adjustment Nut (RH) Deck Support Arms Footrests Deck Lift Handle
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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 Oil Deck Lift Rod Tailpipe Filter Muffler Anti-Scuff Oil Drain Left Hand Roller Plug Drive Wheel Tailwheel Fork and Wheels Rear View and Left Side View 8
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Component Identification Air Cleaner Air Cleaner Engine Air Cleaner Donaldson Air Cleaner Cover Base Plate (Secondary) Fuel Filter Fuel Pump (Primary Air Cleaner) Air Restriction Indicator Muffler Grass (Not Visible) Shield Air Intake Hose Throttle and (Primary to Secondary) Choke Linkage Muffler Heat Shield Fuel Tank Oil Dipstick/Oil Fill Rubber Bumper (Catcher Support) Precleaner Tube Muffler Jackshaft 20 Amp Fuse PTO Gearbox (Starter Solenoid) Dipstick GHS Blower Turbine Precleaner RH Transm
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Safety Instructions Pay particular attention to any information labeled Walker Manufacturing cannot predict every poten- DANGER, WARNING, CAUTION, IMPORTANT, tially dangerous situation. Therefore, items labeled and NOTE in this manual. as such in this manual do not cover all conceivable situations. Any person using procedures, tools, or When you see the Safety Alert Symbol ( ), control techniques not recommended by Walker read, understand, and follow the instructions. Fail- Manufacturi
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Safety Instructions 6. Do not wear loose fitting clothing that could get 12. The electrical system battery contains sulfuric caught in moving parts. Do not operate this acid. Avoid any contact with skin, eyes, and machine while wearing shorts; always wear clothing. Keep the battery and acid out of reach adequate protective clothing, including long of children. pants. Wearing safety glasses, safety shoes, OPERATING and a helmet is advisable and required by some local ordinances and insurance
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Safety Instructions 10. Disengage the blade drive when transporting 17. In case of a clogged or plugged mower deck the machine across drives, sidewalks, etc. Ne- or GHS catching system: ver raise the mower deck while blades are a. Disengage the blade clutch (PTO) and turn rotating. the engine off before leaving the seat. 11. The maximum recommended side slope op- b. LOOK to make sure blade drive shaft and erating angle is 20 degrees or 33% grade. When operating the machine on a slope, reduce bl
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Safety Instructions 4. Perform only maintenance instructions de- d. Disconnect both battery cables before scribed in this manual. Unauthorized main- unplugging any wiring connectors or mak- tenance operations or machine modifications ing repairs on the electrical system. may result in unsafe operating conditions. IMPORTANT: Keep all applicable manuals 5. If the engine must be running to perform a main- immediately accessible to anyone who may tenance adjustment, keep hands, feet, and operate or
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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) Hydrostat Oil Reservoir (5810) Front Body Adjacent to SD Deck Discharge Shield (5848) RH
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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 Gearbox Cover (5807-1) Deck Carrier Frame (8647) Gear Axle (5810-1) Deck Carrier Frame (8653) On Engine (6810) Deck Carrier
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Assembly Instructions SETUP INSTRUCTIONS Dry Battery Service Walker Mowers are shipped partially assembled. DANGER After uncrating the tractor and mower deck, initial setup is required. Activating a battery can be dangerous. NOTE: During the process of unpacking, any dam- The battery should be taken to a reliable aged or missing parts should be noted and reported service station, battery store, or power to the delivering carrier immediately (put in writing equipment dealer where a trained techni
