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OWNER’S MANUAL
Safety, Assembly, Operating, and Maintenance Instructions
and ILLUSTRATED PARTS MANUAL
Model MB (18 HP)
™
Please Read and Save These Instructions Effective Date: 10-01-04
For Safety, Read All Safety and Operation P/N 4000-1
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 ENGAGING THE MOWER________________ 30 Owner’s Manual STOPPING THE MACHINE _______________ 31 ADJUSTING CUTTING HEIGHT ___________ 31 General Information ________________ 3 TRANSAXLE LOCKOUTS________________ 32 RECOMMENDATIONS FOR MOWING ______ 32 HIGHLIGHTED INFORMATION _____________ 3 RECOMMENDATIONS FOR TILT-UP DECK GLOSSARY ____________________________ 3 OPERATION/TRANSPORT _______________ 33 IDENTIFYING NUMBER LOCATIONS________ 3 ENGINE SERIAL NUMBER LOCATION ______ 4 Main
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Table of Contents ADJUSTMENTS ________________________ 51 Steering Levers ______________________ 51 Tilt-Up Deck Adjustable Stop ___________ 51 ELECTRICAL SYSTEM __________________ 51 Illustrated Parts Manual TRACTOR DECALS _____________________ 52 BODY / CHASSIS ASSEMBLY ____________ 54 MAIN COMPONENT POWER TRANSMISSION ________________ 56 ENGINE GROUP _______________________ 58 HYDROSTATIC GROUND DRIVE ASSEMBLIES ____________________ 60 STEERING CONTROL ASSEMBLIES_______ 62 ELECTRICAL ASSEMBLY
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General Information HIGHLIGHTED INFORMATION • STEERING LEVERS steer the tractor by con- trolling the two transaxles. Walker Manufacturing recommends that any ser- vice requiring special training or tools be performed • TRACTOR is the prime mover, including the en- by an authorized Walker Mower Dealer. There are gine, drive train, operator seat, and controls to several general practices to be aware of in the area operate the mower. of safety. Most accidents associated with the oper- • TRANSAXLE
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General Information Serial Number Serial Number Tractor Serial Number Location Engine Serial Number Location SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS The detailed servicing and repair of the engine, tran- saxle and gearboxes are not covered in this manual. Serial Number 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
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Specifications MODEL MB ENGINE Manufacturer/Model Briggs and Stratton Vanguard, 2 Cyl. OHV (Air-Cooled) Displacement 34.7 cu. in. (570 cc) HP (@ 3600 RPM) 18.0 Max. RPM (No Load) 3600 ± 100 Governed RPM 3600 ± 100 Max. Torque [ft-lb (N⋅m) @ RPM] 29.5 (40.5) @ 2400 Idle RPM 1750 Spark Plug Type Champion RC14YC Spark Plug Gap .030 in. (.75 mm) Crankcase Capacity 1.5 qts (1.4 liters) Crankcase Lubricant SF/SG/SH/SJ or Higher Grade Oil Only with 30W Viscosity Above 40° F (4° C) Fuel Tank Capacity 3
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Specifications MODEL MB TRANSMISSION (continued) Transmission Fluid Factory Service 20W50 Multi-Viscosity Motor Oil (Minimum SL Grade Oil) Transmission Fluid Capacity 79 fl oz (2336 ml) Transmission Cooling Cooling Fan Mounted on Drive Pulley Ground Travel Speed Forward m.p.h. (km/h) 0-8 (0-13) Infinitely Variable Reverse m.p.h. (km/h) 0-8 (0-13) Infinitely Variable BLADE DRIVE PTO Shaft Sliding Spline Shaft with Two (2) High-Speed U-Joints Blade Spindle Each Blade (2) Mounts Direct on Peerle
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Specifications MODEL MB DIMENSIONS (continued) Height 39 in. (99 cm) Wheel Base (Tractor) 38-1/2 in. (98 cm) Tread Width (Tractor) 29-3/4 in. (76 cm) MOWER DECK Width of Cut 36-, 42-, 48-, or 56-in. (91, 107, 122 or 142 cm) Cutting Height 1 to 4 in. (3 to 10 cm) Height Adjustment 7 Positions - 1/2 in. (1 cm) Increment Hitch Pins Installed in Multi-Position Deck Support Blade Size 36 in. (91 cm) SD Model 20 in. (51 cm) Two (2) Clockwise-Rotating Blades with a 4 in. (10 cm) Center Overlap 42 in. (
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Component Identification NOTE: Control Identification shown in Operating Instructions section. Tilt-Up Latch Fuel Pickup Line Counterweight Spring and Protective Cover Fuel Tank and Cap Deck Support Deck Support Pin and Height Arm Adjustment Hitch Pins Forward Speed Tilt-Up Control (FSC) Deck Handle Friction Adjustment Deck Support Arm Deck Lift Handle (Cutting Height Adjustment) Tilt-Up Hook Footrests Deck Discharge Shield Deck Footrests Caster Wheels Front View and Right Side View 8
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Component Identification Oil Fill Oil Dipstick Muffler Fuel Filter Cylinder Head Cooling Fins Left Hand Tailpipe Drive Wheel Electric Clutch Tailwheel Fork and Wheel PTO Belt Left Hand Protective Cover Transaxle Rear View and Left Side View 9
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Component Identification Steering Levers LH Transmission Dampening Springs Control Arm RH Transmission Control Arm RH Transaxle Expansion LH Transaxle Reservoir Expansion and Hose Reservoir and Hose RH Transaxle LH Transaxle RH Transaxle Lockout Rod LH Transaxle Lockout Rod Parking Brake Positive (+) Parking Brake Battery Cable Linkage Negative (-) Battery Cable Flexible PTO Spider Coupling Fuel Pump Fuel Ta
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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- Manuf
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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 9. Watch for holes, rocks, and roots in the terrain 16. In case of a clogged or plugged mower deck: and for other hidden hazards. When mowing a. Disengage the blade clutch (PTO) and turn tall grass, mow higher than desired to expose the engine off before leaving the seat. any hidden obstacles. Then, clean the area and mow to the desired height. b. LOOK to make sure blade drive shaft move- ment has stopped before trying to unclog 10. Avoid sudden starts or stops. Before ba
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Safety Instructions 5. If the engine must be running to perform a main- 11. Use care when charging the battery or per- tenance adjustment, keep hands, feet, and forming maintenance on the battery and clothing away from moving parts. Do not wear electrical system: jewelry or loose clothing. a. Make sure the battery charger is unplugged 6. Always use the proper engine service before connecting or disconnecting cables manual when working on the engine. to the battery. Unauthorized maintenance oper
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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 Section. Each End of Mower Deck (5808) SD Deck Discharge Shield (5848) LH Fender (5802-2) RH Fender (5802-1) Rear Body, Above Muffler (5805) Deck Gearbox Cover (5807-3) 15
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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 Section. Front Body Adjacent to LH Steering Lever (7818) Upper Guard Blade Clutch on Front Body (4107-1) Adjacent to RH Steering Lever (6806) Hydrostat Oil Belt Routing (4107-4) Rese
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Assembly Instructions SETUP INSTRUCTIONS Walker Mowers are shipped partially assembled to our distribution network, and are typically assembled by the selling dealer. For any additional assembly besides the following, contact your Walker dealer. Battery Service The battery is a completely sealed, non serviceable battery. IMPORTANT: Make sure battery is securely mounted in the frame. A loose battery may cause Deck Caster Wheel Installation damage to the case resulting in acid leakage and se- ve
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Assembly Instructions PTO Shaft Guard Installation Mower Deck Installation on Tractor Deck Installation Position the shaft guard as shown and mount with two 1/4-20 x 1/2 in. bolts. 1. Lightly grease each deck support arm (2) on the tractor. Refer to Mower Deck Installation photo for location of deck support arm. 2. Engage the deck carrier frame tube sockets on the tractor support arms (refer to PTO Shaft Carrier Frame Guard Installation photo for socket location). Tube Sockets Slide the deck on
