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Walker MT, MTL, MTEFI, MTLEFI Owner's Manual

Other manuals for MT, MTL, MTEFI, MTLEFI: Detailed Instructions, Owner's Manual, Owner's Manual

Summary of MT, MTL, MTEFI, MTLEFI

  • Page 1

    Owner’s manual safety, assembly, operating, and maintenance instructions model mt (20.0 hp) model mtl (25.0 hp) model mtefi (26.0 hp) (covers 2004 production) please read and save these instructions effective date: 01-01-04 for safety, read all safety and operation p/n 8000-9 instructions prior to o...

  • Page 2: Foreword

    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 (97...

  • Page 3: Table Of Contents

    Table of contents 1 general information ________________ 4 highlighted information _____________ 4 glossary ____________________________ 4 identifying number locations________ 4 engine serial number location ______ 5 servicing of engine and drivetrain components ______________ 5 specifications _____...

  • Page 4: Table Of Contents

    2 table of contents maintenance instructions __________ 52 maintenance schedule chart _______ 52 important tips for care of the kohler engine _______________ 53 fuel system _________________________ 53 starting/stopping _____________________ 53 cooling system - mt, mtefi____________ 53 cooling syste...

  • Page 5: Table Of Contents

    Table of contents 3 electrical system __________________ 92 circuit breakers ______________________ 92 wiring diagram - model mt_____________ 93 wiring diagram - model mtefi __________ 94 wiring diagram - model mtl____________ 96 warranty ___________________________ 97.

  • Page 6: General Information

    4 general information highlighted information 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- a...

  • Page 7: General Information

    General information 5 tractor serial number location mower deck serial number location engine serial number location refer to the engine manual that accompanies this manual for the location of the engine serial number. For the mower model(s) covered by this manual, an engine manual is available cove...

  • Page 8: Specifications

    Specifications 6 model air cooled mt (20.0 hp) mtefi (26.0 hp) liquid cooled mtl (25.0 hp) engine manufacturer/model kohler command ch20, 2 cyl., gasoline (air cooled) kohler aegis tm lh685, 2 cyl., gasoline (liquid cooled) kohler command pro ch26, 2 cyl., gasoline (air cooled), electronic fuel inje...

  • Page 9: Specifications

    Specifications 7 model air cooled mt (20.0 hp) mtefi (26.0 hp) liquid cooled mtl (25.0 hp) electrical system battery 12 volt, 35ah, 295 cca 12 volt, 35ah, 295 cca charging system flywheel alternator flywheel alternator charging output 15 amp dc (regulated) 25 amp dc (regulated) system polarity negat...

  • Page 10: Specifications

    Specifications 8 model air cooled mt (20.0 hp) mtefi (26.0 hp) liquid cooled mtl (25.0 hp) blade drive pto shaft quick disconnect splined shaft with two high-speed u-joints quick disconnect splined shaft with two high-speed u-joints blade spindle each blade (2) mounts direct on peerless right angle ...

  • Page 11: Specifications

    Specifications 9 model air cooled mt (20.0 hp) mtefi (26.0 hp) liquid cooled mtl (25.0 hp) mower deck (continued) blade size (typical) 42 in. (107 cm) sd 22 in. (56 cm) 2 in. (5 cm) center overlap (two blades, cw rotation) 22 in. (56 cm) 2 in. (5 cm) center overlap (two blades, cw rotation) 48 in. (...

  • Page 12: Specifications

    Specifications 10 model air cooled mt (20.0 hp) mtefi (26.0 hp) liquid cooled mtl (25.0 hp) ghs system (optional) (continued) full signal (grass-pak ® switch) oscillating vane switch mounted on grass delivery spout triggers horn signal oscillating vane switch mounted on grass delivery spout triggers...

  • Page 13: Component Identification

    Component identification 11 note: control identification shown in operating instructions section. Grass handling system 9.5 bushel catcher (optional) 7.0 bushel catcher standard (not shown) anti-scuff roller transmission control rod adjustment nut (lh) deck caster wheels tilt-up deck handle catcher ...

  • Page 14: Component Identification

    Component identification 12 catcher door gas spring instrument panel guard left hand drive wheel catcher door handle dump plate catcher door fuel filter tailwheel fork and wheels removable grass catcher screen (not visible) catcher lift / dump handle gas spring cover instrument panel box (shock moun...

  • Page 15: Component Identification

    Component identification 13 air restriction indicator air intake hose muffler grass shield throttle and choke linkage oil dipstick/oil fill rubber bumper (catcher support) muffler 20 amp fuse (starter solenoid) ghs blower rh hydrostatic transmission pto clutch lever rh transmission lockout lever pto...

  • Page 16: Component Identification

    Component identification 14 radiator hose fuel pickup line fuel filter precleaner tube fuel tank air intake hose water pump radiator oil dipstick/ oil fill radiator cap tailpipe model mtl low idle adjustment screw muffler shield air restriction indicator radiator guard air intake plenum air cleaner ...

  • Page 17: Component Identification

    Component identification 15 air restriction indicator muffler grass shield oil dipstick/oil fill throttle linkage precleaner tube fuel tank air cleaner cover cylinder head temperature switch air intake hose donaldson air cleaner fuel return line model mtefi fuel pickup line muffler muffler grass shi...

  • Page 18: Safety Instructions

    Safety instructions 16 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 in personal injury...

  • Page 19: Safety Instructions

    Safety instructions 17 6. 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 l...

  • Page 20: Safety Instructions

    Safety instructions 18 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...

  • Page 21: Safety Instructions

    Safety instructions 19 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, mak- ing sure they are tight. 4. Perform onl...

  • Page 22: Safety Instructions

    Safety instructions 20 adjacent to blower discharge chute through body (5804) front body adjacent to rh steering lever (7818) hydrostat oil reservoir (5810-2) on body adjacent to clutch control lever (5806) right side of front body, below front body latch release (7820) rear cross member of front bo...

  • Page 23: Safety Instructions

    Safety instructions 21 instrument panel mt (8823-2), mtefi (8823-3), mtl (8823-4) fender, rh side (7802) catcher door hinge bar, lh and rh sides (5868) left side of operator seat (7819) right side, below operator seat (7809) top of blower housing (5819) deck carrier frame (8653) jackshaft support ad...

  • Page 24: Assembly Instructions

    Assembly instructions 22 setup instructions walker mowers are shipped partially assembled. After uncrating the tractor and mower deck, initial setup is required. Note: during the process of unpacking, any dam- aged or missing parts should be noted and reported to the delivering carrier immediately (...

  • Page 25: Assembly Instructions

    Assembly instructions 23 to fill (activate) battery with electrolyte (if battery has been shipped dry): 1. Remove the battery hold down bar, disconnect the battery cables and lift the battery out of the tray. Important: battery must be removed from the mower before filling with electrolyte. Importan...

  • Page 26: Assembly Instructions

    Assembly instructions 24 battery installation mower deck assembly deck caster wheels installation 1. Remove the bolt, nut, axle spacer tube, and spacer washers from each deck caster wheel fork. Note: spacer washers are used only when the optional semi-pneumatic deck wheels (8.25 x 2.75) are installe...

  • Page 27: Assembly Instructions

    Assembly instructions 25 deck discharge shield installation (side discharge models only) 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 w...

  • Page 28: Assembly Instructions

    Assembly instructions 26 5. Connect the mower deck pto drive shaft assembly to the tractor with the splined quick disconnect coupler. This coupler simplifies shaft alignment and installation. A. Use the arrows on the shaft and tube to align and slide the pto quick coupler onto the deck spline shaft....

  • Page 29: Assembly Instructions

    Assembly instructions 27 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 30: Assembly Instructions

    Assembly instructions 28 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 31: Assembly Instructions

    Assembly instructions 29 check engine cooling system - model mtl • check the radiator air intake screen to make sure the screen is clean and free of obstruction. Also, the radiator cooling fins should be inspect- ed and cleaned if there is any buildup of dirt or debris. (remove the intake screen ass...

  • Page 32: Assembly Instructions

    Assembly instructions 30 check mower blade condition, sharp- ness, and security of mounting the blade mounting nut should be tightened to 60 ft-lb (81.3 n ⋅ m). If blade sharpening is required, refer to checking/servicing for sharpen mower blades in maintenance instructions . Adjust mower cutting he...

  • Page 33: Operating Instructions

    Operating instructions 31 control identification, location, and function operating controls engine choke - (model mt and mtl only) 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 sta...

  • Page 34: Operating Instructions

    Operating instructions 32 choke and throttle location (mt and mtl) 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 back- ward toward ...

  • Page 35: Operating Instructions

    Operating instructions 33 throttle blade clutch (pto) pull up to engage parking brake left wheel steering lever forward position (no control change) neutral-park position reverse drive wheel motion position right wheel steering lever the forward speed control also establishes the neutral-park positi...

  • Page 36: Operating Instructions

    Operating instructions 34 front body latch release the front portion of the tractor body hinges forward for maintenance access and is latched down in the operating position. To raise the body, move the latch release forward. Front body latch release transmission lockout levers the transmission locko...

  • Page 37: Operating Instructions

    Operating instructions 35 instrument panel instrument panel this illustration shows the configuration of the switches and indicators located on the instrument panel. Hourmeter oil pressure warning light light switch (optional) warning horn ignition switch warning horn warning horn ignition switch ig...

  • Page 38: Operating Instructions

    Operating instructions 36 hourmeter the hourmeter displays operating time accumu- lated while the ignition switch is in the on position. Voltmeter the voltmeter displays battery and charging system voltage. An indication of low or high voltage (the red area) indicates an electrical system failure. T...

  • Page 39: Operating Instructions

    Operating instructions 37 ignition switch the ignition switch is used to start and stop the en- gine. The switch has three positions: “o” is the off position, run is the position the key returns to after starting, and “s” is the start position. When start- ing the engine, turn the key clockwise to t...

  • Page 40: Operating Instructions

    Operating instructions 38 starting the engine 1. Before attempting to start the engine, make sure the operator is in the seat, the forward speed control is in neutral-park position, and the blade clutch and parking brake are disengaged. Note: release parking brake to prevent extra load on the starte...

  • Page 41: Operating Instructions

    Operating instructions 39 important: for model mt and mtl, make sure the choke is in the off position during normal en- gine operation; running with the choke in the on po- sition can damage the engine. Adjusting ground speed and steering important: if the dsd52 or dsd62 mower deck is installed on t...

  • Page 42: Operating Instructions

    Operating instructions 40 correct operator hand position on the controls 3. Reverse direction of the mower by pulling both levers backward. Note: smooth action on the steering levers will produce smooth mower operation. Remem- ber to keep the engine and ground speed slow until learning the control r...

  • Page 43: Operating Instructions

    Operating instructions 41 blade clutch engaged blade clutch disengaged stopping the machine 1. Slow the engine to a fast idle; put the throttle in the 1/2 throttle position. 2. Pull the steering levers to the neutral posi- tion and then move the fsc lever backward to the neutral-park position. 3. Di...

  • Page 44: Operating Instructions

    Operating instructions 42 adjusting cutting height cutting height is adjusted by positioning the four re- tainer hitch pins in a series of seven vertical holes on the deck support pins. Lift handles have been pro- vided on each end of the deck to assist in raising the deck while positioning the hitc...

  • Page 45: Operating Instructions

    Operating instructions 43 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...

  • Page 46: Operating Instructions

    Operating instructions 44 recommendations for tilt-up deck operation/transport to avoid potential deck and/or tractor damage while using the tilt-up deck, the following recommenda- tions are offered: • do not move the tractor with the deck in the tilt- up position since both the roller wheels (on th...

  • Page 47: Operating Instructions

    Operating instructions 45 grass handling system (ghs) ghs model only ghs flow and components pto and blade gear drive pto clutch rear discharge mower deck deck discharge chute blower body chute assembly grass catcher catcher door spring catcher door exhaust deflector exhaust screen (removable) catch...

  • Page 48: Operating Instructions

    Operating instructions 46 general information the grass handling system (ghs) consists of a rear discharge mower deck connected to a 10 in. (25 cm) blower and a rear mounted grass catcher with 7.0 bushel (246 liters) capacity or optional 9.5 bushel (335 liters) capacity. The ghs blower oper- ates an...

  • Page 49: Operating Instructions

    Operating instructions 47 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...

  • Page 50: Operating Instructions

    Operating instructions 48 • check that the openings in the removable air exhaust screen in the grass catcher are not plugged. If the screen is clogged, refer to cleaning the ghs exhaust screen in this section. Note: an optional exhaust screen with larger holes (3/4 is available for use when mowing i...

  • Page 51: Operating Instructions

    Operating instructions 49 dumping the catcher 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. Ta...

  • Page 52: Operating Instructions

    Operating instructions 50 3. Hook the bottom of the bag over the rear bumper while lifting on the handle strap(s). 4. Tilt the catcher back to dump into the bag by lifting on the catcher lift handle on the lower front corner of the catcher with the one hand while continuing to hold up on the bag str...

  • Page 53: Operating Instructions

    Operating instructions 51 power dump components grass catcher cable guide catcher door gas spring catcher door cable rod guide cable assembly fork lift channel door actuator arm gas spring rubber bumper power dump ram actuator dog leg assembly actuator mount assembly.

  • Page 54: Maintenance Instructions

    Maintenance instructions 52 maintenance schedule chart - recommended service intervals - model mt, mtefi, mtl service item daily 25 hours 100 hours 200 hours yearly every 2years ref. Page check engine crankcase oil level x 54 check/clean engine air cooling system* x 64 check coolant level, radiator/...

  • Page 55: Maintenance Instructions

    Maintenance instructions kohler tips 53 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. • on the model mtefi, the fuel syst...

  • Page 56: Maintenance Instructions

    Maintenance instructions kohler tips/lubrication 54 oil • use only multi-viscosity oils as specified with the viscosity matching ambient temperatures for the en- gine operating conditions. This will aid starting in cold weather and assure proper lubrication in hot weather. • use only kohler oil filt...

  • Page 57: Maintenance Instructions

    Maintenance instructions lubrication 55 changing engine crankcase oil/oil filter for model mt and mtefi, change the engine crank- case oil after every 100 hours of operation and re- place the oil filter every other oil change (every 200 hours of operation). For model mtl, change the engine crankcase...

  • Page 58: Maintenance Instructions

    Maintenance instructions lubrication 56 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 tee gearbox, deck oil * 1 4 blade drive gearbox oil * 2 5 universal joint shaft assembl...

  • Page 59: Maintenance Instructions

    Maintenance instructions lubrication 57 chassis and deck lubrication points 2 2 3 1 1 5 4 4 7 7 8 8 6 6 6 6 10 11 9 13 13 12 15 16 14 14 18 19 19 17 20 & 36 22 22 21 24 25 23 27 27 26 29 30 30 & 35 28 32 33 31 34 34 20

  • Page 60: Maintenance Instructions

    Maintenance instructions lubrication 58 mower deck gearbox lubrication note: these instructions apply to all mower decks with gear-driven blades. Refer to dsd52 or dsd62 mower deck lubrication in this section for the dsd52 or dsd62 deck with belt-driven blades. The mower deck gearboxes (tee gearbox ...

  • Page 61: Maintenance Instructions

    Maintenance instructions lubrication 59 2. Check the oil level in the belt drive gearbox ev- ery 100 hours (or sooner if a visible oil leak has developed). With the deck in the normal oper- ating position, remove the level plug in the side of the gearcase. Add sae e.P. (extreme pres- sure) 90w oil t...

  • Page 62: Maintenance Instructions

    Maintenance instructions lubrication 60 hydrostatic transmission fluid checking hydrostatic transmission fluid level hydrostatic transmission fluid level should be checked every 25 hours of machine operation. It is preferable to check the fluid level when fluid is cold. Check fluid level as follows:...

  • Page 63: Maintenance Instructions

    Maintenance instructions lubrication/cleaning 61 3. Reinstall the lower drain plug, making sure the rubber o-ring on the plug is in place and in good condition. 4. Refill the transmission through the air bleed plug hole until it is as full as possible. Important: avoid fluid contamination when filli...

  • Page 64: Maintenance Instructions

    Maintenance instructions cleaning 62 turbine precleaner 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 clean- ing. Dust particles are exhaus...

  • Page 65: Maintenance Instructions

    Maintenance instructions cleaning 63 1. Release the top and bottom cover latches and remove the air cleaner cover. Wash the cover and vacuator™ valve. Check that these com- ponents are in good condition. The vacuator™ valve is subject to wear and deterioration and should be replaced yearly or when d...

  • Page 66: Maintenance Instructions

    Maintenance instructions cleaning 64 engine cooling system - mt20 and mtefi air intake system to prevent engine overheating and possible engine damage, clean grass clippings, chaff, and dirt from the rotating engine air intake screen after every 8 hours of operation. In certain mowing conditions (dr...

  • Page 67: Maintenance Instructions

    Maintenance instructions cleaning 65 2. Inspect the radiator cooling fins for material lodged in this area which would restrict cooling airflow. Use pressurized air or water to clean. Do not use any tool, like a screwdriver or knife, to clean material out of the fins as this may damage the cooling f...

  • Page 68: Maintenance Instructions

    Maintenance instructions cleaning 66 note: while some degree of material buildup in the mower deck housing can be tolerated, a point is finally reached where cutting quality deteriorates and clogging begins to occur because of too much buildup on the baffling and housing. 4. Lower the deck to the no...

  • Page 69: Maintenance Instructions

    67 maintenance instructions cleaning/ checking/servicing hydrostatic transmission cooling fins keeping the cooling fins on the hydrostatic transmis- sions clean and free of obstruction is essential to avoid overheating the transmission fluid and short- ening transmission life. The cooling fins shoul...

  • Page 70: Maintenance Instructions

    68 maintenance instructions checking/servicing important: the coolant solution of antifreeze and distilled water must be thoroughly pre-mixed be- fore putting it in the engine (adding pure antifreeze into the radiator may cause damage to the engine by causing overheating). Security of air filtration...

  • Page 71: Maintenance Instructions

    69 maintenance instructions checking/servicing cleaning the terminals if battery terminals are corroded, remove battery from the mower. Using a wire brush, remove corro- sion with a solution of one part baking soda and four parts water. Rinse with clean water. Coat the terminals with petroleum jelly...

  • Page 72: Maintenance Instructions

    Maintenance instructions checking/servicing 70 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 us- ing a rag or a thick, padded glove, while loosen- ing and removing the nut, lock washer, and flat washer that mount...

  • Page 73: Maintenance Instructions

    71 maintenance instructions checking/servicing mower deck gearbox oil seals the mower deck gearbox seals should be inspected every 25 hours for evidence of oil leaking; particu- larly the lower oil seal on the blade drive gear- box. This seal is protected by the trash guard on the blade hub and seal...

  • Page 74: Maintenance Instructions

    Maintenance instructions replacing/repairing 72 replacing/repairing important: always use genuine factory re- placement parts. Substitute parts can result in product malfunction and possible injury to the oper- ator and/or others. Drive belts there are four (4) individual belts on ghs models or thre...

  • Page 75: Maintenance Instructions

    Maintenance instructions replacing/repairing 73 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 76: Maintenance Instructions

    Maintenance instructions replacing/repairing 74 jackshaft drive belt 1. To remove the jackshaft drive belt: a. Remove the engine pto drive belt, as described in previous section. Jackshaft drive belt (engaged) jackshaft drive belt (disengaged) idler pulley engine pulley tension spring jackshaft driv...

  • Page 77: Maintenance Instructions

    Maintenance instructions replacing/repairing 75 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 and remove. Blower drive pulley depress idler pulley down to relax belt belt tightener idler pull...

  • Page 78: Maintenance Instructions

    Maintenance instructions replacing/repairing 76 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 idler pulley be...

  • Page 79: Maintenance Instructions

    Maintenance instructions replacing/repairing 77 fuel filter - model mt and mtl models mt and mtl are each equipped with an in- line fuel filter. Visually inspect the filter periodically, and replace the filter yearly. Fuel filter location important: replace the fuel filter only in a clean area where...

  • Page 80: Maintenance Instructions

    Maintenance instructions replacing/repairing 78 after reinstalling the blade, check blade timing by moving blades through one (1) complete revolu- tion. Make sure blade tips pass clear of each other. If timing is incorrect, refer to mower deck gearbox replacement in this section. Pto shear pin the p...

  • Page 81: Maintenance Instructions

    Maintenance instructions replacing/repairing 79 reinstall the blades following procedure in checking/servicing for 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 replaceme...

  • Page 82: Maintenance Instructions

    Maintenance instructions replacing/repairing 80 mower deck gearboxes (shown with gearbox cover removed for clarity) ghs blower assembly (and/or blower wheel) ghs blower assembly removal 1. Remove the mower deck. Refer to deck instal- lation in assembly instructions and reverse the procedure to remov...

  • Page 83: Maintenance Instructions

    Maintenance instructions replacing/repairing 81 pressing blower wheel out of housing blower wheel installation 1. To install the blower wheel, reverse the remov- al procedures. The front bearing is mounted on the blower wheel shaft, secured by a locking collar. Drive the locking collar clockwise wit...

  • Page 84: Maintenance Instructions

    82 maintenance instructions adjustments adjustments safety switches there are three (3) safety interlock switches on the tractor; seat switch, fsc neutral - park switch, and pto switch. If any of the following conditions occur during start- ing or operating, a safety interlock switch may be malfunct...

  • Page 85: Maintenance Instructions

    Maintenance instructions adjustments 83 blade clutch (pto) clutch engagement/belt tension the clutch engagement and pto belt tension are ad- justed using the clutch actuator rod. Initially, after in- stalling a new pto belt, after 10 hours and every 100 hours thereafter, check and adjust for the two...

  • Page 86: Maintenance Instructions

    Maintenance instructions adjustments 84 clutch disengagement/brake action the declutched or disengaged position of the blade clutch idler pulley is adjustable and is set to give belt release without excessive slack and to apply the blade brake. The blade brake is activated by the brake actuator rod ...

  • Page 87: Maintenance Instructions

    Maintenance instructions adjustments 85 use the following procedures to check and adjust clutch disengagement and brake action: stop block eccentric adjustment - step 1 use the stop block attached to pto belt tightener arm to set the bottom position of the clutch idler pul- ley in the disengaged pos...

  • Page 88: Maintenance Instructions

    Maintenance instructions adjustments 86 blade brake band adjustment note: the length of the actuator rod is adjusted by disconnecting the bottom clevis and shortening or lengthening accordingly. The standard pre-set length of the actuator rod is set at the factory at 8-1/4 in. (209 mm). Brake actuat...

  • Page 89: Maintenance Instructions

    Maintenance instructions adjustments 87 3. Tighten the jam nut on the forward travel stop adjusting bolt. Forward speed control stop and steering lever adjustment steering lever end play adjustment - step 2 1. Position the fsc lever to the most forward position. 2. Loosen the adjustment nut on each ...

  • Page 90: Maintenance Instructions

    Maintenance instructions adjustments 88 straight ground travel adjustment - step 4 1. Sit in the seat, start the engine (operate at nor- mal speed), and with the fsc in the neutral- park position check for forward movement of either drive wheel (if either wheel moves back- ward, refer back to neutra...

  • Page 91: Maintenance Instructions

    Maintenance instructions adjustments 89 tilt-up deck adjustable stop when the carrier frame hinge joint is properly adjust- ed, the deck lock levers should move in and out of the engaged and disengaged positions freely. All four hitch pins used for height adjustment should sit flush on the washers a...

  • Page 92: Maintenance Instructions

    Maintenance instructions adjustments 90 carburetor adjustment 3. Start the engine and allow it to warm up by run- ning at 1/2 throttle for approximately five (5) minutes. The engine must be warm before making final settings. 4. Move the throttle to the idle position. Adjust idle speed for 1200 rpm (...

  • Page 93: Maintenance Instructions

    Maintenance instructions adjustments 91 ghs “full” signal horn with grass-pak ® switch if the ghs “full” signal horn is not sounding when the catcher is full, the following troubleshooting and ad- justment instructions apply: 1. Check the horn. A. Disconnect the two wires from the grass- pak ® switc...

  • Page 94: Maintenance Instructions

    92 maintenance instructions adjustments/electrical system adjusting the grass-pak ® switch 3. If adjustment is required, hold the grass-pak ® switch mount bracket firmly, grasp the switch and bracket and bend it down. Adjustments should be done in very small increments checking the measurement each ...

  • Page 95: Maintenance Instructions

    93 maintenance instructions electrical system wiring diagram - model mt s1 = start circuit s2 = start/accessory circuit m = magneto ground circuit b = battery circuit a = accessory circuit g = ground circuit ignition switch circuits off start run run g + m b + a / s1 + s2 b + a relay - a start relay...

  • Page 96: Maintenance Instructions

    94 maintenance instructions electrical system relay - a relay - b only dept. Service test plug diagnostic 86 85 to j12/j13 to j1/j2 to j1 to j11 to j10 to j3/j4 to j3 to j3 to j8 to j20 to j20 to j20 to j2 to j4 to j5 j21 time delay module for tail wheel lock j17 j14 = ignition coil ground j20 = spe...

  • Page 97: Maintenance Instructions

    95 maintenance instructions electrical system optional light optional light red/wht red/ wht red/ wht wht pur red relay - d relay - c 20 amp fuse 10 amp fuse pump fuel horn switch grass pak starter solenoid starter oil pressure switch oil temp switch temp switch cylinder head breaker circuit 30 amp ...

  • Page 98: Maintenance Instructions

    96 maintenance instructions electrical system _ + - 30 85 87 87a 30 85 30 85 87a ignition switch circuits start run off g + m b + a b + a / s1 + s2 start pto on relay - a pto relay off 30 + 87a open 30 + 87a start run relay - b start relay off 30 + 87 open open start run relay - c fan interrupt rela...

  • Page 99

    97 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) ye...

  • Page 100

    Walker mfg. Co. • 5925 e. Harmony road, fort collins, co 80528 • (970) 221-5614 form no. 021404 printed in usa © 2004 walker mfg. Co sound - model mt sound test sound test conducted was in accordance with 79/113/eec and was performed on 22 march 96 under the conditions listed: general condition: cle...