Page 2 - Foreword; Do not operate; standard specifications listed.
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 your loc...
Page 3 - Table of Contents
Table of Contents General Information ________________ 1 HIGHLIGHTED INFORMATION _____________ 1 GLOSSARY ____________________________ 1 IDENTIFYING NUMBER LOCATIONS ________ 1 ENGINE SERIAL NUMBER LOCATION _______ 2 SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS ______________ 2 Specifications _____...
Page 4 - Maintenance Instructions
Table of Contents Maintenance Instructions __________ 45 MAINTENANCE SCHEDULE CHART _______ 45 IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE ________________ 46 Fuel System _________________________ 46 Starting/Stopping _____________________ 46 Cooling System ______________________ 46 Air Cleaner Sys...
Page 5 - General Information; Safety
General Information 1 HIGHLIGHTED INFORMATION Walker Manufacturing recommends that any service requiring special training or tools be performed by an authorized Walker Mower dealer. There are sev- eral general practices to be aware of in the area of safety. Most accidents associated with the opera- ...
Page 7 - Specifications; MODEL; ENGINE
Specifications 3 MODEL MC19 ENGINE Manufacturer/Model Kohler Command Pro CH621, 2 Cyl., Gasoline (Air-Cooled) Displacement cu. in. (cc) 38.1 (624) Max. Power HP (kW) 19.0 (14.2) @ 3600 RPM Governed RPM 3600 Max. Torque lb·ft (N·m) 32.2 (43.7) Idle RPM 1200 Spark Plug Type Champion ® RC12YC Spark Plu...
Page 9 - GHS SYSTEM
Specifications 5 MODEL MC19 GHS SYSTEM Blower 10.5 in. Diameter, Three-Blade Paddle Wheel Blower Brake Band Brake [Works in Combination with PTO Clutch, Stops Blower within Five (5) Seconds of PTO Disengagement] Max. Blower RPM 4000 Grass Catcher Capacity gal / bu / L 65 / 7 / 246 Full Signal (Grass...
Page 10 - Component Identification; Front View and Right Side View
Component Identification 6 Front View and Right Side View NOTE: Control Identification shown in Operating Instructions section. Deck Caster Wheels Anti-Scuff Roller Deck Support Arms Transmission Control Rod Adjustment Nut (RH) Catcher Lift / Dump Handle Fuel Tank and Cap Tilt-Up Latch Spring Clip C...
Page 11 - Rear View and Left Side View
Component Identification 7 Rear View and Left Side View Anti-Scuff Roller Catcher Door Left Hand Drive Wheel Removable Grass Catcher Screen (Not Visible) Oil Drain Plug Footrest Catcher Door Gas Spring (Not Visible) Catcher Lift / Dump Handle Muffler Tailpipe Oil Filter Tailwheel Fork and Wheel Catc...
Page 13 - Safety Instructions - Before Operating; DANGER
Safety Instructions - Before Operating 9 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. Fail ure to comply with safety instructions may result i...
Page 14 - WARNING
Safety Instructions - Before Operating 10 6. Do not wear loose fitting clothing that could get caught in moving parts. Do not operate this ma- chine while wearing shorts; always wear ade- quate protective clothing, including long pants. Wearing safety glasses, safety shoes, and a helmet is advisable...
Page 15 - Safety Instructions - Operating
Safety Instructions - Operating 11 1. Operate the mower only in daylight or in good artificial light with good visibility of the area being mowed. 2. Sit on the seat when starting the engine and operating the machine. Keep feet on the deck footrests at all times when the tractor is moving and/or mow...
Page 16 - CAUTION
Safety Instructions - Operating 12 14. The maximum recommended slope operat- ing angle is 15 degrees or 26% grade. When operating the machine on a slope, reduce speed and use caution to start, stop, and maneuver. To prevent tipping or loss of control of the ma- chine, avoid sharp turns or sudden cha...
Page 17 - Safety Instructions - Maintenance
Safety Instructions - Maintenance 13 1. To prevent accidental starting of the engine when servicing or adjusting the machine, re- move the key from the ignition switch and dis- connect the spark plug wires. 2. To reduce fire hazards, keep the engine free of grass, leaves, excessive grease, and dirt....
Page 18 - Safety Instructions
Safety Instructions 14 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 bel...
Page 20 - Location: Right Side, Behind Operator Seat
Safety Instructions 16 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 bel...
Page 21 - Location: Hydrostat Oil Reservoir
Safety Instructions 17 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 bel...
Page 22 - Assembly Instructions; tions; Wet Battery Service
Assembly Instructions 18 SETUP INSTRUCTIONS Walker Mowers are shipped partially assembled to our distribution network, and are typically assem- bled by the selling dealer. For any additional as- sembly besides the following, contact your Walker dealer. Tire Installation (Tractor) • Install the drive...
Page 23 - Battery Charging; Battery Installation; Deck Caster Wheels Installation
Assembly Instructions 19 3. 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 ca...
Page 24 - Deck Discharge Chute Installation; PTO Shaft Guard Installation
Assembly Instructions 20 Spacer Washer Axle Bolt Axle Spacer Tube Deck Caster Wheel Installation 5. Grease the caster wheel bearings and caster pivot bearings - one grease fitting for each wheel and each pivot. Deck Discharge Chute Installation (GHS Rear Discharge Models Only) Mount the discharge ch...
Page 25 - Deck Installation
Assembly Instructions 21 Roller Wheels Attach Spring Tilt-Up Spring and Roller Wheel Installation on Rear Discharge Deck Mower Deck Installation on Tractor Deck Installation 1. Lightly grease each deck support arm (2) on the tractor. Refer to Mower Deck Installation photo for location of deck suppor...
Page 27 - Deck Leveling; Operating Instructions
Assembly Instructions 23 Deck Leveling 1. 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. Refer to ADJUSTING CUTTING HEIGHT in Operating Instructions . NOTE: A block of wood cut 4 in....
Page 28 - Checking Engine Crankcase; Maintenance Instructions.; Cylinder Head Cooling Fins; nance Instructions; Checking Hydrostatic; Maintenance Instruc-
Assembly Instructions 24 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 ope...
Page 34 - Operating Controls (Top View from Drivers Point of View)
Operating Instructions 30 Operating Controls (Top View from Drivers Point of View) 1. 2. BLADE CLUTCH (PTO) Pull Up to Engage CHOKE PARKING BRAKE THROTTLE The Forward Speed Control also Establishes the Neutral-Park Position of the Steering Levers Fast Throttle Position Idle Position Forward Position...
Page 35 - Safety Instructions
Operating Instructions 31 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 ga...
Page 40 - structions
Operating Instructions 36 Lockout Lever Plunger Released 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 and head where inad- vertent contact may ca...
Page 41 - When operating on a slope,
Operating Instructions 37 Side Discharge Deflector Shield in Lowest Position • When operating on a slope, reduce speed and use caution to start, stop, and maneuver. Avoid sharp turns or sudden changes in direction. The maximum recommended slope operating angle is 15 degrees or 26% grade. Maximum Rec...
Page 43 - GHS Flow and Components
Operating Instructions 39 GRASS HANDLING SYSTEM (GHS) GHS Flow and Components Catcher Door PTO Clutch Rear Discharge Mower Deck Blower Exhaust Screen (Removable) Catcher Door Spring (Not Visible) Grass Catcher Dump Handle Body Chute Assembly Deck Discharge Chute Shear Bolt Shear Pin PTO and Blade Ge...
Page 44 - Mainte nance
Operating Instructions 40 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 7.0 bushel (246 liters) capacity. The GHS blow- er oper ates any time the mower blade clutch is en- gaged...
Page 46 - Powerfil
Operating Instructions 42 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)...
Page 47 - Tailgate Dumping
Operating Instructions 43 Dumping the Catcher DANGER Do not mow or dump grass within 5 feet (1.5 meters) of an embankment or retaining wall with drop off. 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 fabri...
Page 49 - lb·ft
Maintenance Instructions 45 MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTERVALS - MODEL MC19 Service Item Daily 25 Hours 100 Hours 200 Hours 400 Hours Yearly Every 2 Years Ref. Page Check Engine Crankcase Oil Level x 47 Check/Clean Engine Air Cooling System* x 56 Check Security of Air Filtrat...
Page 50 - KOHLER TIPS
Maintenance Instructions KOHLER TIPS 46 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 • Start engine wi...
Page 51 - LUBRICATION; Checking Engine Crankcase Oil Level; Changing Engine Crankcase Oil/Oil Filter
Maintenance Instructions LUBRICATION 47 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 mach...
Page 54 - Checking Gearbox Oil Level
Maintenance Instructions LUBRICATION 50 Tractor PTO Gearbox Lubrication Checking Gearbox Oil Level Check the gearbox oil level every 25 hours, and if necessary, add oil [SAE E.P. (Extreme Pressure) 80W-90 (API GL-5) gear lube] to maintain oil level to the FULL mark on the dipstick. IMPORTANT: DO NOT...
Page 56 - Illustrated Parts Manual
Maintenance Instructions LUBRICATION 52 Ident Lubrication No. No. Location Type Places Ident Lubrication No. No. Location Type Places 1 Deck Caster Wheel Fork Pivot Grease 2 2 Deck Caster Wheel Bearing Grease 2 3 Blade Spindle Grease Δ 3 4 Pivot Assembly, Tilt-Up Deck Grease 4 5 Deck Support Arm Soc...
Page 57 - Chassis and Deck Lubrication Points (DS42 Shown)
Maintenance Instructions LUBRICATION 53 Chassis and Deck Lubrication Points (DS42 Shown) 21 23 20 25 34 36 37 38 33 & 40 30 & 39 38 21 13 27 26 27 28 29 31 19 17 16 30 33 32 35 32 14 14 15 20 22 24 2 2 1 1 12 5 4 4 11 12 7 4 4 5 13 18
Page 58 - CLEANING; Turbine Precleaner
Maintenance Instructions CLEANING 54 CLEANING CAUTION If a pressure washer is used on the ex- posed working parts, avoid water on the electrical parts and the engine cooling system. Engine Air Cleaner System Turbine Precleaner Do frequently check the Turbine Precleaner (located in the end cap of t...
Page 60 - Cooling Air Intake System
Maintenance Instructions CLEANING 56 IMPORTANT: Any dust left on the inside of the outlet tube will go into the engine and cause wear. 8. Check the outside surface of the outlet tube for smoothness and cleanness (this is the sealing surface). 9. Insert and seat the safety filter and primary filter e...
Page 63 - erating Instructions; Electrolyte Level
59 Maintenance Instructions CLEANING/ CHECKING/SERVICING GHS Exhaust Screen Refer to Cleaning the GHS Exhaust Screen in Op- erating Instructions . Hydrostatic Transmission Cooling Fins Keeping the cooling fins on the hydrostatic transmis- sions clean and free of obstruction is essential to avoid ove...
Page 64 - Cleaning the Terminals
60 Maintenance Instructions CHECKING/SERVICING 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. Using a w...
Page 65 - Operating Instructions
61 Maintenance Instructions CHECKING/SERVICING 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 gras...
Page 68 - Belt Locations
64 Maintenance Instructions REPLACING/REPAIRING Belt Locations Jackshaft Drive Belt Engine PTO Belt GHS Blower Belt Hydrostatic Ground Drive Belt
Page 69 - Engine PTO Drive Belt (3 Groove Power Band); inside
65 Maintenance Instructions REPLACING/REPAIRING Engine PTO Drive Belt (3 Groove Power Band) 1. To remove the engine PTO drive belt: a. 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. NOTE: Step (a) is not essential ...
Page 70 - Jackshaft Drive Belt
66 Maintenance Instructions REPLACING/REPAIRING Jackshaft Drive Belt 1. To remove the jackshaft drive belt: a. Remove the engine PTO drive belt, as described in previous section. b. Relax the belt by depressing the spring- loaded idler arm. c. Roll the belt off the jackshaft pulley and remove. Jacks...
Page 71 - GHS Blower Drive Belt; free movement
67 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. GHS B...
Page 72 - Hydrostatic Ground Drive Belt; Hydrostatic Ground Drive Belt Assembly (Disengaged)
68 Maintenance Instructions REPLACING/REPAIRING Hydrostatic Ground Drive Belt 1. To remove the hydrostatic ground drive belt: a. Raise the spring-loaded belt tightener arm and idler pulley to relax belt. b. Slide belt off pulleys, then release the idler. Hydrostatic Ground Drive Belt Assembly (Disen...
Page 75 - ADJUSTMENTS
71 Maintenance Instructions REPLACING/REPAIRING/ ADJUSTMENTS Reinstall the blades following procedure in CHECK- ING/SERVICING for Sharpen Mower Blades in- structions. If blades are replaced, always use Walk- er original equipment blades to ensure safety and optimum performance. The quality and perfo...
Page 77 - Operator’s Notes
