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- T25i
- Operator's Manual
Walker T25i Operator's Manual
Summary of T25i
Page 1
Operator’s manual safety, assembly, operating, and maintenance instructions please read and save these instructions for safety, read all safety and operation instructions prior to operating machine beginning s/n: 125598 effective date: 11.20.13 p/n 8000-17.
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 your loca...
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: Table of Contents
Table of contents maintenance instructions __________ 51 maintenance schedule chart _______ 51 important tips for care of the kohler engine ________________ 52 fuel system _________________________ 52 starting/stopping _____________________ 52 cooling system ______________________ 52 air cleaner sys...
Page 5: General Information
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 6: General Information
General information 2 serial number tractor serial number location serial number mower deck serial number location engine serial number location refer to the engine manual that accompanies this manual or photo below for the location of the engine serial number. Serial number (not visible) located un...
Page 7: Specifications
Specifications 3 model t25i engine manufacturer/model kohler command pro ® ech740, 2 cyl., gasoline (air-cooled), electronic fuel injection (efi) displacement cu. In. (cc) 45.6 (747) max. Power hp (kw) 25.0 (18.6) @ 3600 rpm governed rpm 3600 max. Torque lb·ft (n·m) 38.8 (52.6) idle rpm 1200 spark p...
Page 8: Specifications
Specifications 4 model t25i transmission (continued) transmission fluid factory service mobil 1 synthetic motor oil (15w-50) transmission oil capacity oz. (l) 19 (.56) transmission cooling cooling fan mounted on drive pulley ground travel speed forward mph (km/h) reverse mph (km/h) 0-7 (0-11.3) infi...
Page 9: Specifications
Specifications 5 model t25i ghs system (continued) max. Blower rpm 4000 hi-dump option max. Lift capacity lb (kg) 200 (91) grass catcher capacity gal / bu / l 80 / 10 / 352 full signal (grass-pak ® switch) oscillating vane switch mounted on grass delivery spout triggers horn signal powerfil ® oscill...
Page 10: Component Identification
Component identification 6 front view and right side view note: control identification shown in operating instructions section. Deck caster wheels anti-scuff roller grass handling system 10.0 bushel catcher catcher lift / dump handle deck support pins and height adjustment hitch pins tilt-up latch s...
Page 11: Component Identification
Component identification 7 rear view and left side view anti-scuff roller catcher door left hand drive wheel removable grass catcher screen (not visible) instrument panel guard instrument panel box (shock mounted) dump plate oil drain plug catcher door handle tailwheel fork and wheels oil filter tai...
Page 12: Component Identification
Component identification 8 top view (engine compartment) fuel tank muffler heat shield air cleaner cover turbine precleaner fuel pickup line donaldson air cleaner air intake hose air filter restriction gauge fuel filter fuel module (not visible) oil fill precleaner tube 30 amp circuit breaker pto ge...
Page 13
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
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 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
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 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 19: Safety Instructions
Safety instructions 15 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: Safety Instructions
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: Safety Instructions
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
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: Assembly Instructions
Assembly instructions 19 dry battery service danger activating a battery can be dangerous. The battery should be taken to a reliable service station, battery store, or power equipment dealer where a trained techni- cian can activate the battery safely. Do not attempt to activate the battery unless y...
Page 24: Assembly Instructions
Assembly instructions 20 battery installation important: make sure battery is securely mounted in the frame. A loose battery may cause damage to the case resulting in acid leakage and severe damage to the machine. A hazard may be created by damage to critical working parts and safety systems. Instal...
Page 25: Assembly Instructions
Assembly instructions 21 deck discharge chute installation (ghs rear discharge models only) mount the discharge chute hinge on top of the deck discharge opening using the 1/4-20 x 1/2 in. Socket button head screw and 1/4-20 esna nut. Position the screw with the head inside of the chute and the nut o...
Page 26: Assembly Instructions
Assembly instructions 22 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 support arm. 2. Engage the deck carrier frame tube sockets on the tractor support arms (refer to disch...
Page 27: Assembly Instructions
Assembly instructions 23 coupler ring in locked position pto drive shaft pto coupler u-joint internal balls locked on shaft quick disconnect ring “locked” position 6. Slide the deck the rest of the way on the deck arms. If the deck is rear discharge (ghs equipped model), the rear discharge chute wil...
Page 28: Assembly Instructions
Assembly instructions 24 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 29: Assembly Instructions
Assembly instructions 25 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 30: Assembly Instructions
Assembly instructions 26 check hydrostatic transmission oil level refer to lubrication for checking hydrostatic transmission fluid level in maintenance instruc tions. Check functions of instrument pan- el and warning horn turn the ignition key to the run position. Voltmeter, oil pressure light, and...
Page 31: Operating Instructions
Operating instructions 27 control identification, location, and function operating controls caution before operating the mower, become famil- iar with the location and function of all op- erator controls. Knowing the location, function, and operation of these controls is important for safe and effic...
Page 32: Operating Instructions
Operating instructions 28 forward speed control (fsc) forward speed control (fsc) has two functions: one is to set forward travel speed, and the other is to establish the neutral-park position. When the fsc lever is moved into the forward posi- tion, a friction lock holds any forward speed setting f...
Page 33: Operating Instructions
Operating instructions 29 operating controls (top view from drivers point of view) 1. 2. Blade clutch (pto) pull up to engage parking brake throttle the forward speed control also establishes the neutral-park position of the steering levers forward position (no control change) left wheel steering le...
Page 34: Operating Instructions
Operating instructions 30 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 front body latch release transmission lockout leve...
Page 35: Operating Instructions
Operating instructions 31 instrument panel this illustration shows the configuration of the switches and indicators located on the instrument panel. Instrument panel hourmeter the hourmeter, which is located on the instrument panel, displays operating time accumulated while the ignition switch is in...
Page 36: Operating Instructions
Operating instructions 32 note: the blinking hour glass on the display means that the meter is operating properly. Hourmeter voltmeter the voltmeter displays battery and charging system voltage. An indication of low or high voltage (the red area) indicates an electrical system failure. The cause of ...
Page 37: Operating Instructions
Operating instructions 33 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 is the start position. When start- ing the engine, turn the key clockwise to the s...
Page 38: Operating Instructions
Operating instructions 34 2. Move the throttle 1/4 to 1/2 open (toward fast). Turn the ignition switch to the start position to start the engine. Release the key to run position as soon as the engine starts. Important: if the engine fails to start after approximately 10 seconds of cranking, the en- ...
Page 39: Operating Instructions
Operating instructions 35 forward speed control (fsc) keep feet on footrest when moving pull steering levers with left hand 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...
Page 40: Operating Instructions
Operating instructions 36 5. Stop ground travel by pulling both steering le- vers backward to the neutral-park position (trac tor not moving) and then moving the 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,...
Page 41: Operating Instructions
Operating instructions 37 disengaged position blade clutch disengaged stopping the machine 1. Pull the steering levers to the neutral-park posi tion and then move the fsc lever backward to the neutral-park position. 2. Slow the engine to a fast idle; put the throttle in the 1/2 throttle position. 3....
Page 42: Operating Instructions
Operating instructions 38 adjusting cutting height warning the engine must be stopped before ad- justing cutting height. Disengage the blade clutch (pto), stop the engine, and remove the ignition key. Wait for all move ment to stop before getting off the seat. Cutting height is adjusted by positioni...
Page 43: Operating Instructions
Operating instructions 39 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 cause injury. Avoid low hanging branches important: operate the engine at full throttle when mowing, t...
Page 44: Operating Instructions
Operating instructions 40 • when using a side discharge mower deck, the side discharge deflector shield must not be removed and must be kept in the lowest possible position to deflect grass clippings and thrown objects down ward. Orient the side discharge away from side walks or streets to minimize ...
Page 45: Operating Instructions
Operating instructions 41 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 46: Operating Instructions
Operating instructions 42 grass handling system (ghs) ghs model only ghs flow and components catcher door pto clutch rear discharge mower deck grass catcher dump handle blower body chute assembly deck discharge chute shear pin shear bolt pto and blade gear drive “full” signal horn actuator rod power...
Page 47: Operating Instructions
Operating instructions 43 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 10.0 bushel (352 liters) capacity. The ghs blower oper ates any time the mower blade clutch is engaged an...
Page 48: Operating Instructions
Operating instructions 44 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 49: Operating Instructions
Operating instructions 45 • 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 mowin...
Page 50: Operating Instructions
Operating instructions 46 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 fabric ...
Page 51: Operating Instructions
Operating instructions 47 catcher lift / dump handle dumping catcher into dump bag 5. Lower the catcher smoothly down to the normal operating position. Do not allow the catcher to drop down - the gas spring, that holds the catcher in the raised position, is not a shock absorber for lowering the catc...
Page 52: Operating Instructions
Operating instructions 48 hi-dump ® option when equipped with the optional hi-dump ® system, the operator raises and dumps the catcher while sit- ting in the seat. Two toggle switches operate inde- pendent hydraulic cylinders to raise and lower the catcher. The back door automatically opens and clos...
Page 53: Operating Instructions
Operating instructions 49 power dump components 1. 2. Catcher door grass catcher upper arm cable guide catcher door gas spring lower arm door arm actuator gas spring actuator mount assembly dog leg assembly rubber bumper cable assembly lift channel fork power dump ram actuator.
Page 54: Operating Instructions
Operating instructions 50 hi-dump ® components catcher door dump toggle switch reservoir/power unit control lift rod control lift rod auxiliary power terminals (not visible) grass catcher upper arm cable guide catcher door gas spring lower arm door arm actuator gas spring assembly safety lockout arm...
Page 55: Maintenance Instructions
Maintenance instructions 51 maintenance schedule chart - recommended service intervals - model t25i service item daily 25 hours 100 hours 200 hours yearly every 2 years ref. Page check engine crankcase oil level x 53 check/clean engine air cooling system* x 60 check security of air filtration compon...
Page 56: Maintenance Instructions
Maintenance instructions kohler tips 52 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. • the fuel system is pressurized. D...
Page 57: Maintenance Instructions
53 maintenance instructions kohler tips/lubrication • use only kohler oil filters. Aftermarket filters may not seal properly and/or have the incorrect pressure relief valve for proper lubrication. Lubrication warning do not attempt to lubricate the machine with the engine running. Disengage the pto ...
Page 58: Maintenance Instructions
Maintenance instructions lubrication 54 changing engine crankcase oil/oil filter change the engine crankcase oil after every 100 hours of operation and replace the oil filter every other oil change (every 200 hours of operation). 1. Park the mower on a level surface with the en gine stopped. The eng...
Page 59: Maintenance Instructions
Maintenance instructions lubrication 55 blade drive gearboxes tee gearbox mower deck gearboxes (shown with gearbox cover removed for clarity) 2. Clean the area around the individual gearbox cover plates to prevent contaminants from en- tering the gearcase. 3. Remove the screws securing the cover pla...
Page 60: Maintenance Instructions
Maintenance instructions lubrication 56 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 61: Maintenance Instructions
Maintenance instructions lubrication 57 hydrostatic transmission fluid checking hydrostatic transmission fluid level the hydrostatic transmissions are sealed units and do not need to be opened to check the fluid level. Hydrostatic fluid level should be checked ev- ery 25 hours of machine operation. ...
Page 62: Maintenance Instructions
Maintenance instructions lubrication 58 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 63: Maintenance Instructions
Maintenance instructions lubrication 59 chassis and deck lubrication points (dc42 shown) 21 23 20 25 34 36 37 38 30 & 39 38 21 13 33 27 26 27 28 29 31 19 17 16 30 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 64: Maintenance Instructions
Maintenance instructions cleaning 60 cleaning engine air cleaner system caution do not use a pressure washer to clean the cooling system on an air-cooled engine, mud may form under the cooling shroud on the cylinder head and cooling fan. There are two main components in the engine air cleaner system...
Page 65: Maintenance Instructions
Maintenance instructions cleaning 61 donaldson radialseal™ air cleaner a remote mounted donaldson radialseal™ air cleaner provides the air filtering function. The paper filter element slides over an outlet tube inside the air cleaner canister with radial sealing action, reducing the possibility of d...
Page 66: Maintenance Instructions
Maintenance instructions cleaning 62 note: use care when cleaning the filter ele- ment. The filter element and/or seal surface may be damaged by tapping too hard or hitting on an uneven surface or sharp edge. Washing the element in water or cleaning solution is not recommended. Do not try to clean t...
Page 67: Maintenance Instructions
Maintenance instructions cleaning 63 engine cooling system cooling air intake system to prevent engine overheating and possible engine damage, clean grass clippings, chaff, and dirt from the rotating engine cooling air intake screen after every 8 hours of operation. In certain mowing conditions (dry...
Page 68: Maintenance Instructions
Maintenance instructions cleaning 64 check airflow with hand cylinder head (not visible) cooling system airflow grass buildup in mower deck housing danger before raising or removing the mower deck for cleaning, stop the engine, re move the ignition key, and disconnect the spark plug wires. 1. Raise ...
Page 69: Maintenance Instructions
Maintenance instructions cleaning 65 ghs blower normally, the ghs blower operates with no mainte- nance or cleaning. However, when mowing grass that is dirty and damp (especially springtime mow- ing), a deposit of dirt may accumulate inside the blower housing, causing wear and binding of the blower ...
Page 70: Maintenance Instructions
Maintenance instructions cleaning/ checking/servicing 66 hydrostatic transmission cooling fins keeping the cooling fins on the hydrostatic trans- missions clean and free of obstruction is essential to avoid overheating the transmission fluid and shortening transmission life. The cooling fins should ...
Page 71: Maintenance Instructions
67 maintenance instructions checking/servicing battery note: for initial battery service during setup, re fer to battery service in assembly instructions. Important: make sure battery is securely mount- ed in the frame. A loose battery may cause damage to the case resulting in acid leakage and sever...
Page 72: Maintenance Instructions
68 maintenance instructions checking/servicing tire pressure inflate tires to pressures shown below: deck caster wheel = 20 psi (137 kpa) drive = 15 psi (103 kpa) rear = 20 psi (137 kpa) wheel bolt torque check the eight (8) lug bolts that mount the drive tires. Every 100 hours they should be torque...
Page 73: Maintenance Instructions
69 maintenance instructions checking/servicing 6. Check blade balance by positioning the blade horizontally on a blade balancer or use a nail or shaft through the center hole. If either end of the blade rotates downward, grind (remove) metal on that end until the blade will balance. The blade is pro...
Page 74: Maintenance Instructions
70 maintenance instructions checking/servicing blade brake action warning it is important to check and maintain blade brake action for safe operation of the ma- chine. Check the function of the cutter blade brake (and blower brake on ghs models) by engaging the blade clutch (pto), operating the engi...
Page 75: Maintenance Instructions
71 maintenance instructions replacing/repairing replacing/repairing danger to prevent accidental starting of the en- gine when replacing parts or repairing the machine, remove the key from the ignition switch and disconnect the spark plug wires. Important: always use genuine factory re- placement pa...
Page 76: Maintenance Instructions
72 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 77: Maintenance Instructions
73 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 78: Maintenance Instructions
74 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 79: Maintenance Instructions
75 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 80: Maintenance Instructions
76 maintenance instructions replacing/repairing fuel filter danger gasoline is extremely flammable and can be highly explosive. To minimize danger: • before servicing the fuel system: 1) disconnect the spark plug leads. 2) disconnect the negative (-) battery ca- ble from battery. • use only an appro...
Page 81: Maintenance Instructions
77 maintenance instructions replacing/repairing blade overload shear bolts note: blade shear bolts are not used on belt driv- en decks. On gear driven decks each cutting blade is keyed to a blade hub by two (2) shear bolts (10-24 x 5/8 in. Stainless steel machine screws). These bolts are designed to...
Page 82: Maintenance Instructions
78 maintenance instructions replacing/repairing mower blades mower blades are removed and remounted as de- scribed in sharpen mower blades instructions. During the course of sharpening and inspecting mower blades, if there are any of the following conditions of wear or damage, blades should be repla...
Page 83: Maintenance Instructions
79 maintenance instructions adjustments adjustments steering handles an adjustment range of approximately 3 in. (76 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 ...
Page 84: Maintenance Instructions
80 maintenance instructions adjustments ghs signal horn adjustment (when horn sounds at wrong time) the vertical position of the grass-pak ® switch is critical to make sure the catcher box does not over- fill causing the delivery chute to clog. The vertical position can be adjusted by moving the alu...
Page 85: Operator’S Notes
81 operator’s notes.
Page 86: Operator’S Notes
82 operator’s notes.
Page 87
83 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 88
Walker mfg. Co. • 5925 e. Harmony road, fort collins, co 80528 • (970) 221-5614 form no. 112013 printed in usa www.Walkermowers.Com © 2014 walker mfg. Co.