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OWNER’S MANUAL Safety, Assembly, Operating, and Maintenance Instructions and ILLUSTRATED PARTS MANUAL Model MBSSD (27 HP) ™ Please Read and Save These Instructions Effective Date: 03-31-08 For Safety, Read All Safety and Operation P/N 2000-1 Instructions Prior to Operating Machine...
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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 your local dealer.
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-...
If you have any dif- ficulty finding an authorized outlet or obtaining warranty service, please contact our Service Depart- ment for assistance: Walker Manufacturing Company 5925 E. Harmony Road Fort Collins, CO 80528 1-970-221-5614 Service manuals are available for each of these...
Component Identification Body Lift Handle Forward Speed Control (FSC) Friction Adjustment Deck Height Adjustment Trigger Deck Support Arm Height Adjustment Arm (Cutting Height Adjustment) Deck Discharge Shield Tilt-Up Latch Counterweight Spring and Protective Cover Tilt-Up Hook (not visible) Deck Height Lift Chain Front View and Right Side View NOTE: Control Identification...
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Component Identification Footrests Tailpipe Footrest Catch Assembly Left Hand Drive Wheel Fuel Pickup Fuel Tank Line and Cap Muffler Spread Tail Wheel Battery (not visible) Rear View and Left Side View...
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Component Identification LH Transmission LH Transaxle Expansion Reservoir LH Transaxle LH Transaxle Lockout Rod Parking Brake Cummins/Fleetguard OptiAir™ Air Cleaner Air Filter Cover Fuel Pickup Line Fuel Tank Fuel Tank Cap Oil Fill/ Dipstick Steering Levers Dampeners Control Arm Rubber Bumpers (Body Support) Top View (Body Raised) RH Transmission...
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.
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.
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Safety Instructions Disengage the blade clutch and put the FSC in the NEUTRAL-PARK position before starting the engine (an ignition interlock switch normally prevents starting of the machine if these controls are in the OPERATING position). Do not run the engine in a confined area without adequate ventilation.
Safety Instructions MAINTENANCE To prevent accidental starting of the engine when servicing or adjusting the machine, remove the key from the ignition switch and disconnect the spark plug wires. To reduce fire hazards, keep the engine free of grass, leaves, excessive grease, and dirt. Keep all nuts, bolts, and screws tight to ensure the machine is in a safe, working condition.
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) Engine Shroud (5855)
The Decal Part Number is listed below and in the Parts Section. BELT ROUTING DRIVE BELT DRIVE BELT WALKER P/N 2731 WALKER P/N 2731 CARLISLE P/N R3VX1250-2 CARLISLE P/N R3VX1250-2 On Precleaner Mount (4107-1)
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 Raise mower body up for battery access. Check the battery for electrolyte level and charge.
Assembly Instructions Battery Charging DANGER BATTERIES PRODUCE EXPLOSIVE GASES • Charge the battery in a well-ventilated area, so that gases produced while charg- ing can dissipate. • Keep sparks, flames, and smoking mate- rials away from the battery at all times. •...
Assembly Instructions PTO Shaft Guard Installation Position the shaft guard as shown and mount with two 1/4-20 x 1/2 in. bolts. Carrier Frame Tube Sockets PTO Shaft Guard Installation Tilt-Up Roller Wheel Installation Mount the two (2) tilt-up roller wheels on the brackets on the rear skirt of the deck housing using the P/N 8490 axle bolt, 3/8 in.
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Assembly Instructions 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 drive shaft. Arrows on Shaft and Tube (used to align when sliding together) Grease Deck Support Arms Mower Deck Installation...
Assembly Instructions Deck Leveling Position mower on a smooth, level surface. Set the cutting height to the highest position - 5 in. (127 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 5 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.
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Assembly Instructions CHECK FUNCTION OF SAFETY INTERLOCK SWITCHES Refer to Operating Instructions to check for proper operation of safety switches, both during engine starting and with the operator leaving the seat with tractor moving forward or with mower blades en- gaged.
Operating Instructions CONTROL IDENTIFICATION, LOCATION, AND FUNCTION 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.
Operating Instructions Engine Choke The choke control lever (black knob) is located on the left side of the seat. To start a cold engine, move the choke control forward to the ON position. After engine starts, move choke control toward the OFF position, keeping enough choke to allow the engine to run smoothly as it warms up.
(one hour prior to and one hour after the recommended interval). This reminder is only used one time. 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.
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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 Engaged Position Disengaged Position PARKING BRAKE ON Position...
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.
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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.
FSC lever to the NEUTRAL-PARK position. NOTE: If the tractor creeps forward or back- ward with the FSC lever in the NEUTRAL-PARK position, the transmission control needs to be adjusted. Contact your Walker Dealer. ENGAGING THE MOWER Pull Steering Levers with...
(5) seconds, the brake should be repaired or replaced before operating the mower. Contact your Walker Dealer. 4. Turn the ignition switch OFF. Remove the key from the ignition switch when leaving the mower unattended. This will prevent children and inexperienced operators from starting the engine.
Operating Instructions ADJUSTING CUTTING HEIGHT WARNING Never adjust cutting height while the mower is moving. cutting height or servicing, move the Forward Speed Control (FSC) into the NEUTRAL-PARK position, engage the parking brake, and disengage the blade clutch (PTO). Tractor should not be moving while adjusting cutting height.
Operating Instructions TRANSAXLE LOCKOUTS IMPORTANT: DO NOT TOW this mower with the transmission lockout engaged. Towing can produce excessive internal pressure and damage the transaxle(s). To move the mower with the engine NOT running (dead battery, maintenance, etc.), the transaxles are unlocked (released).
Operating Instructions • Make sure the mower is leveled properly for a smooth cut. Refer to Deck Leveling in Assembly Instructions. • Use an alternating stripe mowing pattern for best appearance and vary the direction of the stripe each time the grass is mowed to avoid wear patterns in the grass.
Maintenance Instructions MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTERVALS - MODEL MBSSD Service Item Check Engine Crankcase Oil Level Check/Clean Engine Air Cooling System* Check Air Filter Restriction Gauge Clean Grass Buildup Under Deck Service Mower Blades Check Security of Air Filtration Components Lubricate Grease Fittings and Oil Points*...
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 •...
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 quieter and easier to operate.
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Maintenance Instructions Remove the dipstick and oil drain plug, and drain oil into a suitable container. Be sure to allow ample time for complete drainage. Before removing the oil filter, clean the area around the filter to keep dirt and debris out of the engine.
Maintenance Instructions Mower Deck Spindle Lubrication These spindles are permanently sealed and require no lubrication. DSD60 Mower Deck Lubrication Lubricate the U-Joint in the drive shaft every 8 hours with SAE general purpose lithium or molybdenum base grease. Transaxle Lubrication •...
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Maintenance Instructions Ident Location Deck Caster Wheel Fork Pivot Deck Caster Wheel Bearing Deck Belt Tensioner Pivot Front Deck Lift Pivot Rear Deck Lift Pivot Pivot Assembly, Tilt-Up Deck Deck Support Arm Socket Steering Lever Pivot Transaxle Oil Reservoir Deck-to-PTO Coupling (Grease Slide Area) Deck Support Arm Pivot Universal Joint Tube Assembly...
Maintenance Instructions Transaxle Oil and Filter Change Change the transaxle oil after the initial break-in period of 75-100 hours. Thereafter, change oil every 400 hours of operation as follows: Thoroughly clean the exterior of the transmis- sion housing before servicing. Using a 1/4 in. hex wrench, remove the plug on the lower inside of each transaxle allowing the oil to drain.
-- a red flag will appear when the filter is overly restricting airflow into the engine. IMPORTANT: Use only Cummins/Fleetguard air filter elements for replacement (Walker 2090-1 or 2090-3). Aftermarket filters may not seal properly or filter efficiently. Cummins/Fleetguard...
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Maintenance Instructions Air Restriction Gauge Push Button to Reset Indicator After Service Air Restriction Gauge Location Inspect the paper element after every 100 hours of service and replace the element and safety filter yearly (or when dirty or damaged). More frequent replacement may be required when operating in extremely dusty conditions as indicated by the air restriction gauge.
Maintenance Instructions 10. Install the cover with the word “DOWN” properly oriented to the bottom of the canister. Twist the OptiAir™ cover to the right and put into the "closed" position. DOWN DOWN Dust Ejection Valve Proper Orientation of Air Cleaner Cover 11.
Maintenance Instructions Every 100 hours, inspect and clean the cooling fins (more often when operating in extremely dusty, dirty conditions). Remove the two (2) cooling fin access panels in the engine shroud and clean the cooling fins and external surfaces using compressed air. Make sure to reinstall the access panels before oper- ating the engine.
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Maintenance Instructions Using the tilt bar, raise deck to the TILT-UP posi- tion and insert the deck hook into the tilt-up latch on the tractor body. Tilt-Up Latch Tilt-Up Hook on Deck Deck Secured in Tilt-Up Position Clean grass buildup underneath the deck using a pressure washer (and scraper if required).
Maintenance Instructions Transaxle Cooling Fins Keeping the cooling fins on the transaxles clean and free obstruction overheating the transmission fluid and shortening 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.
Maintenance Instructions CHECKING/SERVICING DANGER To prevent accidental starting of the en- gine when servicing or adjusting the ma- chine, remove the key from the ignition switch and disconnect the spark plug wires. Security of Air Filtration Components NOTE: The following inspection is only an external inspection and should be done without “disturb- ing”...
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Maintenance Instructions NOTE: Keep blades sharp - cutting with dull blades not only yields a poor mowing job but slows the cutting speed of the mower and causes extra wear on the engine and blade drive by pulling hard. Stop the engine, remove ignition key, and dis- connect the spark plug wires before raising the mower deck to service blades.
Maintenance Instructions Drive Belts Raise the body and inspect the condition of the four (4) drive belts after every 25 hours of operation -- engine/PTO drive and ground drive. If the belts show signs of cracking or deteriorating, the belts should be replaced.
Maintenance Instructions Engine/PTO Belt To remove the engine/PTO belt: Loosen and remove idler tension bolt and jam nut. Relax belt by depressing idler arm. Roll the belts off the pulley and remove the belts. Reverse the removal procedure to replace the engine belts.
Maintenance Instructions Ground Drive Belt To remove the ground drive belt: Raise the spring-loaded idler to relax belt. LH Transaxle Idler Pulley Reverse the procedure to install the ground drive belt. LH Transaxle Idler Pulley Tension Ground Drive Spring Belt Raise Idler Pulley to Hydro Idler Relax Belt...
Maintenance Instructions Fuel Filter Model MBSSD is equipped with in-line fuel filters. Visually 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.
Maintenance Instructions 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.
Maintenance Instructions Steering Handles Adjustment - Step 2 An adjustment range of approximately 3 in. (76.2 mm) is available on the steering handles - the handles can be adjusted forward or aft depending on the arm length of the operator. The handles can be adjusted by loosening the locknut at the pivot point and the locknut holding the handle in position in the adjustment...
Maintenance Instructions NOTE: If the engine will not start, check and ad- just the neutral safety switch (refer to Neutral Switch Adjustment - Step 6). With the FSC in the neutral position and the en- gine running, the wheels should not move. If a drive tire is moving, the Control Rod on that side is out of adjustment.
Maintenance Instructions Neutral Travel End Adjust FSC Switch - Neutral Adjustment - Step 6 Place the FSC in neutral position. Loosen mounting screws and adjust switch up or down accordingly. FSC Switch Location Switch Closed FSC Switch in Neutral Actuator Arm Loosen Screws FSC Switch Adjustment (Side View Through Chassis)
Maintenance Instructions PTO Clutch WARNING It is important to check and maintain blade brake action for safe operation of the machine. The declutched or disengaged position of the PTO clutch is adjustable and is set to completely release spring tension on the mechanical clutch. spring in the linkage that engages the clutch should not have any tension on it when the clutch is disengaged.
Safety Filter Insert 2090-1 Air Cleaner Cartridge 2088-2 Air Cleaner Cap 2090-2 Vacuator Valve 2010 Pre Cleaner / Guard Mount ® Use only genuine Walker replacement parts. ENGINE GROUP ITEM PART DESCRIPTION REQ’D Choke and Throttle Assemblies 2109-4 Control Cable (65-1/4") 2108-4 Control Cable (71")
(1-1/2 x 3/8 x 1/16) 4142-2 FSC Friction Washer (1-1/2 x 1-1/32 x 1/16) 9704-3 Pivot Rod Bushing, Plastic 2451-4 Steering Shaft Spacer ® Use only genuine Walker replacement parts. STEERING CONTROL ASSEMBLIES ITEM PART REQ’D Transmission Spring Assemblies 4199 4552...
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F192 F407 F211 Refer to Hydrostatic Ground Drive Assemblies F146 F391 F024 F008 F320 F352 F003 F032 F004 F121 ® Use only genuine Walker Refer to Hydrostatic Ground Drive Assemblies F146 F391 Refer to Body / Chassis Assembly replacement parts.
F050 F004 F031 F004 F002 F031 F026 Refer to Body / Chassis Assembly DETAIL E PUR/RED PUR/RED DETAIL K DETAIL L PUR/RED PUR/RED PUR/RED PUR/RED PUR/RED ® Use only genuine Walker replacement parts. F019 F050 Refer to Body / Chassis Assembly...
(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. At Walker's request, customer will make the defective part available for inspection by Walker and/or return the defective part to Walker, transportation charges prepaid.
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Wind Speed: < 5 mph (< 8 kmh) Humidity: Barometric Pressure: 83.8 kPA WALKER MFG. CO. • 5925 E. HARMONY ROAD, FORT COLLINS, CO 80528 • (970) 221-5614 FORM NO. 033108 PRINTED IN USA 0.2g Tests were performed on 6 July 07 under the...
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