Instruction/ maintenance manual of the product T25i Walker
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Operator’ s Manua l Safety , Assembly , Operating, and Maintenance I nstructions Please Read and Sa ve These Instructions For Safety , Read All Safety and Operation Instructions Prior to Operating Machine Beginning S/N: 125598 Eective Date: 11.20 .
For eword Thank you. . . for purchasing a W alker mower . Every ef fort has been made to provide you with the most reliable mower on the market, and we are sure you will be among our many satised custom - ers. If for any reason this product does not perform to your expectations, please contact your local dealer .
T able of Contents General Information ________________ 1 HIGHLIGHTED INFORMA TION _____________ 1 GLOSSAR Y ____________________________ 1 IDENTIFYING NUMBER LOCA TIONS ________ 1 ENGINE SERIAL NUMBE.
T able of Contents Maintenance Instructions __________ 51 MAINTENANCE SCHEDULE CHART _______ 51 IMPORT ANT TIPS FOR CARE OF THE KOHLER ENGINE ________________ 52 Fuel System _________________________ .
General Information 1 HIGHLIGHTED INFORMA TION W alker Manufacturing recommends that any service requiring special training or tools be performed by an authorized W alker Mower dealer . There are sev- eral general practices to be aware of in the area of safety .
General Information 2 Serial Number T ractor Serial Number Location Serial Number Mower Deck Serial Number Location ENGINE SERIAL NUMBER LOCA TION Refer to the engine manual that accompanies this manual or photo below for the location of the engine serial number .
Specications 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. T orque lb·ft (N·m) 38.
Specications 4 MODEL T25i TRANSMISSION (continued) T ransmission Fluid Factory Service Mobil 1 Synthetic Motor Oil (15W-50) T ransmission Oil Capacity oz. (L) 19 (.56) T ransmission Cooling Cooling Fan Mounted on Drive Pulley Ground T ravel Speed Forward MPH (km/h) Reverse MPH (km/h) 0-7 (0-1 1.
Specications 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 ® .
Component Identication 6 Front View and Right Side V iew NOTE: Control Identication shown in Operating Instructions section. Deck Caster Wheels Anti-Scuff Roller Grass Handling System 10.
Component Identication 7 Rear View and Left Side V iew Anti-Scuff Roller Catcher Door Left Hand Drive Wheel Removable Grass Catcher Screen (Not Visible) Instrument Panel Guard Instrument Panel Box .
Component Identication 8 T op V iew (Engine Compartment) Fuel T ank Mufer Heat Shield Air Cleaner Cover T urbine Precleaner Fuel Pickup Line Donaldson Air Cleaner Air Intake Hose Air Filter Rest.
Safety Instructions - Befor e Operating 9 Pay particular attention to any information labeled DANGER, W ARNING, CAUTION, IMPORT ANT , 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 .
Safety Instructions - Befor e Operating 10 6. Do not wear loose tting 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.
Safety Instructions - Operating 11 1. Operate the mower only in daylight or in good articial light with good visibility of the area being mowed. 2. Sit on the seat when starting the engine and op erating the machine. Keep feet on the deck footrests at all times when the tractor is moving and/or mower blades are operating.
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 . T o prevent tipping or loss of control of the ma- chine, avoid sharp turns or sudden changes in direction.
Safety Instructions - Maintenance 13 1. T o 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. T o reduce re hazards, keep the engine free of grass, leaves, excessive grease, and dirt.
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.
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.
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.
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.
Assembly Instructions 18 SETUP INSTRUCTIONS W alker 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 W alker dealer .
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 .
Assembly Instructions 20 Battery Installation IMPORT ANT : 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.
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 on the outside.
Assembly Instructions 22 Mower Deck Installation on T ractor 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.
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.
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 .
Assembly Instructions 25 PREOPERA TING CHECKLIST Before operating the mower for the rst 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.
Assembly Instructions 26 CHECK HYDROST A TIC TRANSMISSION OIL LEVEL Refer to LUBRICA TION for Checking Hydrostatic T ransmission Fluid Level in Maintenance Instruc - tions. CHECK FUNCTIONS OF INSTRUMENT P AN- EL AND WARNING HORN T urn the ignition key to the RUN position.
Operating Instructions 27 CONTROL IDENTIFICA TION, LOCA TION, 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 efcient operation of the mower .
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-P ARK position. When the FSC lever is moved into the FORW ARD posi- tion, a friction lock holds any forward speed setting from 0 to 7 mph (0 to 1 1 km/h).
Operating Instructions 29 Operating Controls (T op V iew from Drivers Point of View) 1. 2. BLADE CLUTCH (PTO) Pull Up to Engage P ARKING BRAKE THROTTLE The Forward Speed Control also Establishes the N.
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 OPERA TING position.
Operating Instructions 31 Instrument Panel This illustration shows the conguration 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 the RUN position.
Operating Instructions 32 NOTE: The blinking hour glass on the display means that the meter is operating properly . Hourmeter V oltmeter The voltmeter displays battery and charging system voltage. An indication of low or high voltage (the red area) indicates an electrical system failure.
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 ST ART position. When start- ing the engine, turn the key clockwise to the ST ART position.
Operating Instructions 34 2. Move the throttle 1/4 to 1/2 open (toward F AST ). T urn the ignition switch to the ST ART position to start the engine. Release the key to RUN position as soon as the engine starts.
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 mower operation.
Operating Instructions 36 5. Stop ground travel by pulling both steering le- vers backward to the NEUTRAL-P ARK position (trac tor not moving) and then moving the FSC lever to the NEUTRAL-P ARK position. NOTE: If the tractor creeps forward or back- ward with the FSC lever in the NEUTRAL-P ARK position, the transmission control needs to be adjusted.
Operating Instructions 37 Disengaged Position Blade Clutch Disengaged STOPPING THE MACHINE 1. Pull the steering levers to the NEUTRAL-P ARK posi tion and then move the FSC lever backward to the NEUTRAL-P ARK position. 2. Slow the engine to a fast idle; put the throttle in the 1/2 throttle position.
Operating Instructions 38 ADJUSTING CUTTING HEIGHT W ARNING The engine must be stopped before ad- justing cutting height. Disengage the blade clutch (PTO), stop the engine, and remove the ignition key . W ait for all move ment to stop before getting off the seat.
Operating Instructions 39 RECOMMENDA TIONS 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 .
Operating Instructions 40 • When using a side discharge mower deck, the side discharge deector shield must not be removed and must be kept in the lowest possible position to deect grass clippings and thrown objects down ward. Orient the side discharge away from side walks or streets to minimize cleanup of clippings.
Operating Instructions 41 RECOMMENDA TIONS FOR TIL T -UP DECK OPERA TION/TRANSPORT T o avoid potential deck and/or tractor damage while using the tilt-up deck, the following recommenda- tions are offe.
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.
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.
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.
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.
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.
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 catcher .
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. T wo toggle switches operate inde- pendent hydraulic cylinders to raise and lower the catcher .
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 As.
Operating Instructions 50 Hi-Dump ® Components Catcher Door Dump T oggle Switch Reservoir/Power Unit Control Lift Rod Control Lift Rod Auxiliary Power T erminals (Not Visible) Grass Catcher Upper Arm.
Maintenance Instructions 51 MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTER V ALS - MODEL T25i Service Item Daily 25 Hours 100 Hours 200 Hours Y early Every 2 Y ears Ref.
Maintenance Instructions KOHLER TIPS 52 IMPORT ANT TIPS FOR CARE OF THE KOHLER ENGINE Fuel System • Fuel must be clean - free from water , dirt, and or- ganic material. • Change fuel lter on a regular basis and when contamination is suspected or found in the fuel.
53 Maintenance Instructions KOHLER TIPS/LUBRICA TION • Use only Kohler oil lters. Aftermarket lters may not seal properly and/or have the incorrect pressure relief valve for proper lubrication. LUBRICA TION W ARNING DO NOT attempt to lubricate the machine with the engine running.
Maintenance Instructions LUBRICA TION 54 Changing Engine Crankcase Oil/Oil Filter Change the engine crankcase oil after every 100 hours of operation and replace the oil lter every other oil change ( every 200 hours of operation). 1. Park the mower on a level surface with the en gine stopped.
Maintenance Instructions LUBRICA TION 55 Blade Drive Gearboxes Te e 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.
Maintenance Instructions LUBRICA TION 56 T ractor 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.
Maintenance Instructions LUBRICA TION 57 Hydrostatic T ransmission Fluid Checking Hydrostatic T ransmission Fluid Level The hydrostatic transmissions are sealed units and do not need to be opened to check the uid level. Hydrostatic uid level should be checked ev- ery 25 hours of machine operation.
Maintenance Instructions LUBRICA TION 58 Ident Lubrication No. No. Location T ype Places Ident Lubrication No. No. Location T ype Places 1 Deck Caster Wheel Fork Pivot Grease 2 2 Deck Caster Wheel Bea.
Maintenance Instructions LUBRICA TION 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.
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.
Maintenance Instructions CLEANING 61 Donaldson Radialseal™ Air Cleaner A remote mounted Donaldson Radialseal™ air cleaner provides the air ltering function.
Maintenance Instructions CLEANING 62 NOTE: Use care when cleaning the lter ele - ment. The lter element and/or seal surface may be damaged by tapping too hard or hitting on an uneven surface or sharp edge. W ashing the element in water or cleaning solution is not recommended.
Maintenance Instructions CLEANING 63 Engine Cooling System Cooling Air Intake System T o 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.
Maintenance Instructions CLEANING 64 Check Airow with Hand Cylinder Head (Not Visible) Cooling System Airow 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.
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 wheel.
Maintenance Instructions CLEANING/ CHECKING/SERVICING 66 Hydrostatic T ransmission Cooling Fins Keeping the cooling ns on the hydrostatic trans - mis sions clean and free of obstruction is essential to avoid overheating the transmission uid and shortening transmission life.
67 Maintenance Instructions CHECKING/SERVICING Battery NOTE: For initial battery service during setup, re fer to Battery Service in Assembly Instructions . IMPORT ANT : Make sure battery is securely mount- ed in the frame. A loose battery may cause damage to the case resulting in acid leakage and severe dam - age to the machine.
68 Maintenance Instructions CHECKING/SERVICING Tire Pressure Inate tires to pressures shown below: Deck Caster Wheel = 20 PSI (137 kPa) Drive = 15 PSI (103 kPa) Rear = 20 PSI (137 kPa) Wheel Bolt T orque Check the eight (8) lug bolts that mount the drive tires.
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.
70 Maintenance Instructions CHECKING/SERVICING Blade Brake Action W ARNING It is important to check and maintain blade brake action for safe operation of the ma- chine.
71 Maintenance Instructions REPLACING/REP AIRING REPLACING/REP AIRING DANGER T o 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. IMPORT ANT : A LWAY S use genuine factory re- placement parts.
72 Maintenance Instructions REPLACING/REP AIRING Engine PTO Drive Belt (3 Groove Power Band) 1. T o 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 .
73 Maintenance Instructions REPLACING/REP AIRING Jackshaft Drive Belt 1. T o remove the jackshaft drive belt: a. Remove the engine PT O 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.
74 Maintenance Instructions REPLACING/REP AIRING 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.
75 Maintenance Instructions REPLACING/REP AIRING Hydrostatic Ground Drive Belt 1. T o 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 .
76 Maintenance Instructions REPLACING/REP AIRING Fuel Filter DANGER Gasoline is extremely ammable and can be highly explosive. T o minimize danger: • Before servicing the fuel system: 1) Disconnect the spark plug leads. 2) Disconnect the negative (-) battery ca- ble from battery .
77 Maintenance Instructions REPLACING/REP AIRING 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).
78 Maintenance Instructions REPLACING/REP AIRING Mower Blades Mower blades are removed and remounted as de- scribed in Sharpen Mower Blades 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 .
80 Maintenance Instructions ADJUSTMENTS GHS Signal Horn Adjustment (When Horn Sounds at Wrong T ime) The vertical position of the Grass-Pak ® switch is critical to make sure the catcher box does not over- ll causing the delivery chute to clog.
81 Operator ’ s Notes.
82 Operator ’ s Notes.
83 LIMITED W ARRANTY FOR W ALKER COMMERCIAL RIDER MOWER 1. WHA T THIS W ARRANTY COVERS, AND FOR HOW LONG: W alker Manufacturing company will, at its option, repair or replace, without charge, any part.
W ALKER 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.
An important point after buying a device Walker T25i (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Walker T25i yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Walker T25i - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Walker T25i you will learn all the available features of the product, as well as information on its operation. The information that you get Walker T25i will certainly help you make a decision on the purchase.
If you already are a holder of Walker T25i, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Walker T25i.
However, one of the most important roles played by the user manual is to help in solving problems with Walker T25i. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Walker T25i along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
