Walker T27i Operator's Manual
  1. Manuals
  2. Brands
  3. Walker Manuals
  4. Lawn Mower
  5. T27i
  6. Operator's manual

Walker T27i Operator's Manual

Hide thumbs Also See for T27i:
Table of Contents

Advertisement

Quick Links

Download this manual
Operator's Manual
Safety, Assembly, Operating, and Maintenance Instructions
Please Read and Save These Instructions
For Safety, Read All Safety and Operation
Beginning S/N: 170586
Instructions Prior to Operating Machine
P/N 8000-52

Advertisement

Table of Contents
loading

Related Manuals for Walker T27i

Summary of Contents for Walker T27i

  • Page 1 Operator’s Manual Safety, Assembly, Operating, and Maintenance Instructions Please Read and Save These Instructions For Safety, Read All Safety and Operation Beginning S/N: 170586 Instructions Prior to Operating Machine P/N 8000-52...
  • Page 2 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 customers. If for any reason this product does not perform to your expectations, please contact your local dealer.

  • Page 3: Table Of Contents

    T27i Table of Contents General Information Steering Levers .............31 Blade Clutch (PTO) ..........31 Highlighted Information ........1 Front Body Latch Release ........31 Glossary ...............1 Parking Brake ............33 Identifying Number Locations ......1 Transmission Lockout Levers ........33 Engine Serial Number Location ......2 Instrument Panel ............34 Servicing of Engine and Drivetrain Compo- Hourmeter .............34...
  • Page 4 Table of Contents T27i Maintenance Instructions Tire Pressure ............73 Wheel Bolt Torque .............73 Maintenance Schedule Chart ......55 Sharpen Mower Blades..........73 Important Tips for Care of the Drive Belts..............74 Kohler Engine ............56 Mower Deck Gearbox Oil Seals ........75 Fuel System ..............56 Spark Plugs...............75...

  • Page 5: General Information

    Walker Manufacturing recommends that any ser- power to run the cutter blades and GHS vice requiring special training or tools be performed blower. by an authorized Walker Mower dealer. There are several general practices to be aware of in the ● POWERFIL spreads the mowed material ®...

  • Page 6: Engine Serial Number Location

    Tractor Serial Number Location please contact our Service Department for assis- tance: Serial Number Walker Manufacturing Company 5925 E. Harmony Road Fort Collins, CO 80528 1-970-221-5614 www.walker.com Service manuals are available for each of these...

  • Page 7: Specifications

    4.7 (17.8) Fuel Regular Grade Unleaded Gasoline (87 Octane Minimum, 10% Ethanol Maximum) Air Cleaner Remote Mounted Donaldson Radialseal (Walker P/N 5090-1 Primary/5090-3 Safety Filter) ELECTRICAL SYSTEM Battery 12 Volt, 350 CCA (Interstate SP-40) Charging System Flywheel Alternator Charging Output...
  • Page 8 Parking Brake Mechanical Pin Lock in Transmission Gear Neutral Transmission Release by Manual Dump Valve Hydrostatic Transmission Oil Transmission Oil Filtration Walker Transmission Oil Performance System (TOPS Factory Service Mobil SHC 630, Walker P/N 6450-20 Transmission Filter Walker P/N 5024-13 Transmission Oil Capacity fl oz (L) 80 (2.4)
  • Page 9 T27i Specifications DRIVE BELTS Engine PTO Walker P/N 8230 Jackshaft Drive Walker P/N 6250-1 Ground Drive, Micro-V Walker P/N 7248 Blower (GHS Model) Walker P/N 7234-2 SEAT Built-up Seat with Steel Frame, Extra Thick Foam Cushions and Bolsters, and Removable/Replaceable Nylon Backed Vinyl Covers...
  • Page 10 Specifications T27i TOWING Towing Capacity lb (kg) 250 (113) if equipped with a factory installed or factory authorized tow hitch DIMENSIONS (Tractor and Mower) Length in. (cm) Tractor Only 64.25 (164) Tractor Wheel Base 41 (104) Tractor with Tilted Deck...

  • Page 11: Component Identification

    T27i Component Identification COMPONENT IDENTIFICATION NOTE: Operator Controls are identified in the section Operating Controls on page 30. Grass Handling System 10.0 Bushel Catcher Turbine Precleaner Tilt-Up Spring Clip Latch Counterweight Spring and Protective Cover Transmission Control Rod Adjustment Nut (LH)
  • Page 12 Component Identification T27i Catcher Door Removable Grass Gas Spring Catcher Screen (Not Visible) (Not Visible) Gas Spring Cover Catcher Door Catcher Lift / Dump Handle Instrument Panel Guard Catcher Air Exhaust Instrument Panel Box (Shock Mounted) Dump Flap Anti-Scuff Roller...
  • Page 13 T27i Component Identification Air Cleaner Fuel Pump Module Fuel Donaldson Cover (Not Visible) Filter Oil Fill Air Cleaner Oil Cooler Air Intake Hose Fuel Pickup Exhaust Grass Line Shield Throttle Linkage Air Filter (Not Visible) Restriction Gauge Muffler Heat EVAP Line...

  • Page 14: Safety Instructions

    When you see the Safety Alert Symbol ( safety. read, understand, and follow the instructions. Fail- The Walker Rider Lawnmower has been designed ure to comply with safety instructions may result in with many safety features to protect the operator personal injury.
  • Page 15 T27i Safety Instructions Do not wear loose fitting clothing that could d. Always fill the fuel tank outdoors using get caught in moving parts. Do not operate care. Fill to about one inch from the top of this machine while wearing shorts; always the tank.

  • Page 16: Operating

    Safety Instructions T27i OPERATING Do not operate machine if the operator presence safety switch system is not work- Operate the mower only in daylight or in ing. Verify proper operation by having the good artificial light with good visibility of the operator lift off the seat with the engine run- area being mowed.
  • Page 17 T27i Safety Instructions 14. The maximum recommended slope operat- CAUTION ing angle is 15 degrees or 27% grade. When operating the machine on a slope, re- Use leg muscles and firm footing when lift- duce speed and use caution to start, stop, and ing the catcher to dump;...

  • Page 18: Maintenance

    Do not injectors, contact your Walker dealer or autho- wear jewelry or loose clothing. rized Kohler service dealer. Always use the proper engine service man- IMPORTANT: Keep all applicable manuals ual when working on the engine.

  • Page 19: Safety, Control, And Instruction Decals

    T27i 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 Manual.
  • Page 20 Safety Instructions T27i 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 Manual.
  • Page 21 T27i 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 Manual.
  • Page 22 Safety Instructions T27i 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 Manual.

  • Page 23: Assembly Instructions

    (+) battery terminal first, followed by negative (-) cable to SETUP INSTRUCTIONS negative (-) battery terminal. Walker Mowers are shipped partially assembled to Never start the engine when the cables ● our distribution network, and are typically assem- are loose or poorly connected to the bled by the selling dealer.

  • Page 24: Battery Installation

    Assembly Instructions T27i Mower Deck Assembly IMPORTANT: Always disconnect the negative (-) battery terminal before charging. Failure to do so can result in damage to the ECU. CAUTION Disconnect the battery terminals-negative (-) The engine must be off during the tractor first.

  • Page 25: Deck Discharge Chute Installation

    T27i Assembly Instructions Deck Discharge Chute Installation (GHS Collection Models Only) Attach Shield Mount the discharge chute hinge on top of the deck discharge opening using two (2) 1/4-20 x 1/2 in. carriage bolts and 1/4-20 ESNA nuts. Position the bolts with the heads inside the chute and the nuts on the outside.

  • Page 26: Tilt-Up Roller Wheel Installation

    Assembly Instructions T27i Tilt-Up Roller Wheel Installation Mount the two (2) tilt-up roller wheels on the brack- Deck Support Arms ets on the rear skirt of the deck housing using the P/N 8490 axle bolt, 3/8 in. plain washer, 3/8 in.
  • Page 27 T27i Assembly Instructions To reduce the weight of lifting the deck before Internal Balls PTO Drive the counterweight spring is installed, remove Locked on Shaft Shaft one (1) deck height hitch pin from a rear deck support pin or alternately lift and block one side of the deck.
  • Page 28 Assembly Instructions T27i Spring Tension Adjustment Nut Located Under Lower Counterweight Spring Hook Spring Clip Install Deck Counterweight Spring 11. With the counterweight springs connected, the weight on the deck caster wheels should be 15 to 25 Ib (6.8 to 11.3 kg); this adjustment is preset at the factory.

  • Page 29: Deck Leveling

    T27i Assembly Instructions Deck Leveling WARNING The mower deck and support frame are jig welded; within normal tolerances, very little, if any, shim- The machine must be shut off during this ming should be required to level the deck. Tire procedure.

  • Page 30: Ds60-3 Deck Leveling

    Assembly Instructions T27i DS60-3 Deck Leveling than the front. If either set of measurements are not within tolerance, perform the Deck The mower deck and support frame are jig welded Leveling Procedure. and the deck support linkage is factory adjusted.

  • Page 31: Preoperating Checklist

    T27i Assembly Instructions Measure the side-to-side level of the deck by DANGER measuring from the ground to the top of the deck housing at the front corners of the deck Handle gasoline with care. Gasoline is as shown in the DS60-3 Deck Leveling illus- highly flammable and its vapors are explo- tration.
  • Page 32 Assembly Instructions T27i ● Check condition, cleanliness, and security F CHECK FUNCTION OF SAFETY INTERLOCK of the complete air cleaner system (inspect SWITCHES air filter paper element every 100 hours). Refer to Safety Switch System on page 76 For detailed procedures, refer to Engine to check for proper operation of safety switch- Air Cleaner System on page 66.
  • Page 33 T27i Assembly Instructions Tilt-Up Handle Tilt-Up Hook and Latch Connected Tilt-Up Latch Tilt-Up Hook Deck Lock Lever Deck Secured in TILT-UP Position CAUTION Do not operate machine with deck tilt-up pivot joint unlocked. DANGER Do not operate the mower with deck in tilt- up position.

  • Page 34: Operating Instructions

    Operating Instructions T27i Operating Instructions Engine Throttle The throttle control lever (red knob) is located on CONTROL IDENTIFICATION, LOCA- the left side of the seat and is used to control engine speed. Moving the lever forward toward TION, AND FUNCTION the FAST position increases engine speed;...

  • Page 35: Forward Speed Control (Fsc)

    T27i Operating Instructions Forward Speed Control (FSC) Front Body Latch Release Forward Speed Control (FSC) has two functions: The front portion of the tractor body hinges forward One is to set forward travel speed, and the other is for maintenance access and is latched down in the to establish the NEUTRAL-PARK position.
  • Page 36 Operating Instructions T27i The Forward Speed Control also Establishes the Neutral-Park Position of the Steering Levers FORWARD SPEED RIGHT WHEEL CONTROL LEVER (FSC) STEERING LEVER LEFT WHEEL STEERING LEVER Forward Position Full Forward (No Control Change) Ground Speed Position Neutral-Park...

  • Page 37: Parking Brake

    T27i Operating Instructions Parking Brake Transmission Lockout Levers The parking brake functions by locking a pin into The transmission lockout levers disengage the the hydrostatic transmission pinion gear teeth. hydrostatic transmissions. By lifting the lever on Moving the lever FORWARD engages the parking top of the transmission and locking it into place brake;...

  • Page 38: Instrument Panel

    Operating Instructions T27i Instrument Panel This illustration shows the configuration of the switches and indicators located on the instru- ment panel. Oil Pressure Over Temperature Engine Warning Light Warning Light Service Light Hourmeter Voltmeter Ignition Switch Circuit Breaker - 7 Amp...

  • Page 39: Voltmeter

    T27i Operating Instructions Voltmeter Over Temperature Warning Light/Horn The voltmeter displays battery and charging sys- The over temperature warning light and horn indi- tem voltage. An indication of low or high voltage cate that the engine cylinder head temperature is (the red area) indicates an electrical system above the safe operating limit (450°...

  • Page 40: Ignition Switch

    Operating Instructions T27i STARTING THE ENGINE Ignition Switch The ignition switch is used to start and stop the engine. The switch has three positions: “O” is the CAUTION OFF position, “I” is the ON (RUN) position that the key returns to after starting, and...

  • Page 41: Adjusting Ground Speed And Steering

    FSC is out of the NEUTRAL-PARK these guidelines can damage the starter motor position (tractor stationary or moving for- and shorten battery life. Consult your Walker ward) and the operator is not in the seat. dealer or authorized Kohler dealer for addi- The function of this switch should be tional help.
  • Page 42 ♦ Remember it is not necessary to hold the steering levers forward (a unique Walker feature); always PULL on the The FSC may be adjusted forward for faster levers for steering or for reverse mo- ground speed and backward for slower ground tion of the mower.

  • Page 43: Engaging The Blade Drive

    T27i Operating Instructions ENGAGING THE BLADE DRIVE CAUTION Set the engine throttle at about 1/3 speed. Do An operator presence switch (seat switch) not attempt to engage the blade clutch at will cause the engine to stop if the blade high engine speeds.

  • Page 44: Adjusting Cutting Height

    DISENGAGED position tion of the mower. Contact your Walker (tractor not moving and blade clutch disen- dealer, or refer to Clutch Disengagement/ gaged);...

  • Page 45: Ds60-3 Cutting Height

    T27i Operating Instructions Cutting height is adjusted by positioning the four Cutting Height (4) re tainer hitch pins in a series of six vertical Hitch Pin Release Lever Deck Lift Pedal 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 hitch pins.

  • Page 46: Recommendations For Mowing

    Operating Instructions T27i RECOMMENDATIONS FOR MOWING The mower will “freewheel” with the levers in the LOCKOUT position. The levers must be in the highest position to completely unlock the DANGER trans missions. Do not mow around overhanging tree branches or bushes at the same height as Lockout Lever the operator’s torso and head where inad-...
  • Page 47 T27i Operating Instructions ● When mowing, operate the engine at full throttle for the best cutting action and perfor- mance of the grass handling system (GHS). Discharge Mowing with a lower engine RPM causes the Shield mowing blade to not cut clean and tear the grass.

  • Page 48: Recommendations For Towing

    Operating Instructions T27i DANGER Do not mow or dump grass within 5 feet (1.5 meters) of an embankment or retaining wall with drop off. 5 FT MINIMUM No Driving Zone RECOMMENDATIONS FOR TOWING Do not move the tractor with the deck in the ●...

  • Page 49: Grass Handling System (Ghs)

    T27i Operating Instructions GRASS HANDLING SYSTEM (GHS) GHS Model Only Grass Catcher Exhaust Screen (Removable) Grass-Pak ® Vane Switch Catcher Door Spring (Not Visible) Catcher Air Exhaust Powerfil ® Drive Motor Actuator “Full” Signal Horn Catcher Door PTO Clutch PTO and Blade...

  • Page 50: General Information

    Operating Instructions T27i General Information NOTE: When a side discharge or mulching mow er deck is installed on the GHS model, a blower The Grass Handling System (GHS) consists of a intake cover should be installed in the blower rear discharge mower deck connected to a 10.5 in.

  • Page 51: Clogging Checklist

    T27i Operating Instructions Clogging Checklist Blades Must Operate at In case of clogging, there will be a distinct change Right Angles (90 Degrees) in the sound of the blower, i.e., the blower sound will stop. Also, the mower deck will begin to leave FORWARD a trail of grass clippings.

  • Page 52: Using The Tilt-Up Deck

    Operating Instructions T27i ● Check the interior of the chute connecting the “Full” Signal Horn mower deck to the blower for smoothness The GHS catcher has a “full” signal horn to alert and freedom from obstruction. the operator to dump the catcher when it is full Check the blower wheel for bent blades and ●...

  • Page 53: Cleaning The Ghs Exhaust Screen

    T27i Operating Instructions Cleaning the GHS Exhaust Screen Dumping the Catcher To remove the grass catcher screen for cleaning, DANGER open the catcher door, push forward and pull down on the grass catcher screen knobs (on either side Do not mow or dump grass within 5 feet of the screen), and slide the screen out.

  • Page 54: Using The Dump Bag

    Operating Instructions T27i Using the Dump Bag Open the back door by lifting on the door handle. Orient the dump bag with one of the handle straps on the bag opening facing up. Tailgate Door Handle Catcher Lift / Dump Handle...

  • Page 55: Power Dump Option

    T27i Operating Instructions Power Dump Option Hi-Dump Option ® When equipped with the optional power dump When equipped with the optional Hi-Dump sys- ® system, the operator dumps the catcher while tem, the operator raises and dumps the catcher sitting in the seat. A toggle switch operating a while sitting in the seat.
  • Page 56 Operating Instructions T27i NOTE: If grass tends to hang up in the catcher after raising the catcher with the Hi-Dump , “jiggle” ® the steering levers and make the tractor bounce a little to unstick the grass and make it slide out of the catcher.
  • Page 57 T27i Operating Instructions Catcher Door Upper Catcher Door Gas Spring Grass Catcher Cable Guide Lift Channel Power Dump Ram Actuator Lower Fork Door Arm Actuator Cable Guide Cable Assembly Spring Actuator Mount Assembly Dog Leg Assembly Rubber Bumper Power Dump Components...
  • Page 58 Operating Instructions T27i Catcher Door Upper Catcher Door Gas Spring Grass Catcher Cable Guide Lift Channel Gas Spring Assembly Lower Door Arm Actuator Cable Assembly Catcher Pivot Arm Control Dump Lift Rod Cylinder Control Hydraulic Lift Rod Hydraulic Valve Block...

  • Page 59: Maintenance Schedule Chart

    Maintenance Instructions CAUTION Maintenance procedures requiring special training or MAINTENANCE SCHEDULE CHART tools should be performed by a trained technician. RECOMMENDED SERVICE INTERVALS - MODEL T27i Every Ref. Service Item Daily Hours Yearly Hours Hours Hours Hours 2 Years Page...

  • Page 60: Important Tips For Care Of The Kohler Engine

    ● The fuel injection system is pressurized. Do not attempt to service this fuel system. Air Cleaner System Contact your Walker dealer or authorized Kohler service dealer for work on the fuel ● Use only Donaldson air cleaner elements. system.

  • Page 61: Lubrication

    T27i Maintenance Instructions Lubrication ● Use only Kohler oil filters. Aftermarket filters Before removing the dipstick, clean the area may not seal properly and/or have the incor- around the dipstick to keep any dirt or debris rect pressure relief valve for proper lubrication.

  • Page 62: Changing Engine Crankcase Oil/Oil Filter

    Maintenance Instructions T27i Lubrication Changing Engine Crankcase Oil/Oil Filter Install the new oil filter on the engine. Turn the filter clockwise until the rubber gasket contacts Change the engine crankcase oil and filter every the sealing surface, then tighten an additional...

  • Page 63: Mower Deck Gearbox Lubrication

    T27i Maintenance Instructions Lubrication Mower Deck Gearbox Lubrication NOTE: In case the gearboxes are completely drained of oil, approximately 5 fl. oz. (15 cl) of NOTE: These instructions apply to all mower oil per gearbox is required to refill the gear decks with gear-driven blades.

  • Page 64: Ds52 Mower Deck Lubrication

    Maintenance Instructions T27i Lubrication DS52 Mower Deck Lubrication Tractor PTO Gearbox Lubrication There are several special lubrication requirements Checking Gearbox Oil Level for the DS52 mower deck in addition to the require- Check the gearbox oil level every 25 hours, and if ments detailed in the Chassis and Deck Lubrica- necessary, add oil [SAE E.P.

  • Page 65: Changing Gearbox Oil

    T27i Maintenance Instructions Lubrication Grease Fitting and Oil Point Lubrication Changing Gearbox Oil The tractor PTO gearbox is oil filled. No scheduled Lubricate the grease fittings and oil points after oil change is required. However, changing the oil every 25 hours of operation. Lubricate more...
  • Page 66 Maintenance Instructions T27i Lubrication Ident Lubrication Ident Lubrication Location Type Places Location Type Places Deck Caster Wheel Fork Pivot Grease Brake Actuator Rod and Brake Deck Caster Wheel Bearing Grease Band Pivot Pins (Clevis) Blade Spindle Grease Throttle Control Cable Ends Δ...
  • Page 67 T27i Maintenance Instructions Lubrication 29 & 38 Chassis and Deck Lubrication Points (DC48 Shown)

  • Page 68: Hydrostatic Transmission Oil

    T27i Lubrication Hydrostatic Transmission Oil If the oil is below the mid-way point, add oil. The only Walker approved oil for the transmis- This tractor is equipped with Walker Transmission sions is Mobil SHC 630 oil (Walker P/N Oil Performance System (TOPS ) which consists 6450-20).
  • Page 69 3/4 turn. oil to reach the cold fill line (about half-way up Do not over-tighten. the sight gauge window) if necessary. NOTE: Use ONLY a Walker filter (P/N 5024- 12. Check all connections for leaks and tighten if 13). necessary.

  • Page 70: Cleaning

    Maintenance Instructions T27i Cleaning CLEANING Turbine Precleaner The turbine precleaner is mounted on a remote air intake tube connected to the Donaldson air clean- CAUTION er. A spinning fan driven by the intake airflow separates dust from the air, giving the initial stage If a pressure washer is used on the ex- of air clean ing.

  • Page 71: Donaldson Radialseal™ Air Cleaner

    (Donaldson P822686 or safety filter yearly (or when dirty or damaged). Walker 5090-1). Aftermarket filters may not seal More frequent replacement may be required when properly or filter efficiently.
  • Page 72 Maintenance Instructions T27i Cleaning NOTE: Use care when cleaning the filter IMPORTANT: DO NOT use the cover latch- element. The filter element and/or seal sur- es to force the filter into the canister–the cover face may be damaged by tapping too hard or should fit on with no extra force.

  • Page 73: Engine Cooling System

    T27i Maintenance Instructions Cleaning Engine Cooling System CAUTION Cooling Air Intake Screen DO NOT use a pressure washer to clean the To prevent engine overheating and possible engine cooling system on an air-cooled engine; damage, clean grass clippings, chaff, and dirt from...

  • Page 74: Grass Buildup In Mower Deck Housing

    Maintenance Instructions T27i Cleaning Grass Buildup in Mower Deck Housing NOTE: If the buildup is severe, it may be easier to clean the deck by removing the deck assembly from the tractor and standing the DANGER deck assembly on its “nose”.

  • Page 75: Ghs Exhaust Screen

    T27i Maintenance Instructions Cleaning Hydrostatic Transmission Cooling Fins Keeping the cooling fins on the hydrostatic trans- GHS Blower Blower missions clean and free of obstruction is essential Drive Belt Pulley Blower to avoid overheating the transmission fluid and Drive Pulley shortening transmission life.

  • Page 76: Checking/Servicing

    Maintenance Instructions T27i Checking and Servicing CHECKING/SERVICING CAUTION DANGER Important Battery Service, Installation, and Charging Tips for Electronic Fuel Injection To prevent accidental starting of the en gine Engines: when servicing or adjusting the ma chine, remove the key from the ignition switch Do not allow the battery cables to touch ●...

  • Page 77: Charging The Battery

    T27i Maintenance Instructions Checking and Servicing Wheel Bolt Torque Charging the Battery Check the eight (8) lug bolts that mount the drive DANGER tires. Every 100 hours they should be torqued to 75 to 85 lb·ft (102 to 115 N·m).

  • Page 78: Drive Belts

    Maintenance Instructions T27i Checking and Servicing Check blade balance by positioning the blade WARNING horizontally on a blade balancer or use a nail or shaft through the center hole. If either end DO NOT try to straighten a blade that is of the blade rotates downward, grind (remove) bent.

  • Page 79: Mower Deck Gearbox Oil Seals

    (5) seconds—adjust or (2) years. repair the brake before operating the mower. Con- tact your Walker dealer for this service or refer to Engine Starter Adjustments for Blade Brake Band Adjustment - Yearly or every 500 hours disassemble and clean Step 3 on page 91.

  • Page 80: Pto U-Joints

    Forward Speed Control Friction Lock on page If any of the following conditions occur during starting or operating, a safety interlock switch may be malfunctioning. Contact your Walker dealer for troubleshooting and/or replacement. ● With or without an operator in the seat, the...

  • Page 81: Replacing/Repairing

    T27i Maintenance Instructions Replacing and Repairing REPLACING/REPAIRING Drive Belts There are four (4) individual belts on GHS mod- DANGER els or three (3) belts on SD models: To prevent accidental starting of the engine ● Jackshaft Drive Belt when replacing parts or repairing the ma- ●...

  • Page 82: Engine Pto Drive Belt (3 Groove Power Band)

    Maintenance Instructions T27i Replacing and Repairing Engine PTO Drive Belt (3 Groove Power Band) c. Raise the clutch lever (engage position) to lift the clutch idler away from the belt. To remove the engine PTO drive belt: d. Next remove the belt from the engine a.

  • Page 83: Jackshaft Drive Belt

    T27i Maintenance Instructions Replacing and Repairing Jackshaft Drive Belt b. Relax the belt by depressing the spring- loaded idler arm. To remove the jackshaft drive belt: c. Roll the belt off the jackshaft pulley and a. Remove the engine PTO drive belt, as remove.

  • Page 84: Ghs Blower Drive Belt

    Maintenance Instructions T27i Replacing and Repairing GHS Blower Drive Belt Remove the GHS blower drive belt tension by depressing the idler pulley on the tightener arm. Roll the belt off the blower pulley. Blower Drive GHS Blower Pulley Drive Belt...

  • Page 85: Hydrostatic Ground Drive Belt

    T27i Maintenance Instructions Replacing and Repairing Hydrostatic Ground Drive Belt b. Slide belt off pulleys, then release the idler. To remove the hydrostatic ground drive belt: a. Raise the spring-loaded belt tightener arm and idler pulley to relax belt. Belt Tightener Arm...

  • Page 86: Deck Drive Belt (Optional Ds60-3 Deck)

    Maintenance Instructions T27i Replacing and Repairing Deck Drive Belt (Optional DS60-3 Deck) To install the deck drive belt: To remove the deck drive belt: a. Install and route the belt as shown on the belt routing decal (located on the deck a.

  • Page 87: Fuel Filter

    ● Wipe up spilled gasoline immediately and completely. Cutting Blade Model T27i is equipped with an in-line fuel filter Shear Bolts between the fuel tank and the fuel pump (low pres- sure fuel pump). Visually inspect the filter periodi- cally, and replace the filter yearly. Use Walker P/N 5020-3 or Kohler P/N 24-050-13, 9-12 microns for replacement filter.

  • Page 88: Mower Blades

    Sharpen Mower Blades on page 73. If blades ● An excessive amount of the flat section of the are replaced, always use Walker original equip- blade has been ground away (removed) when ment blades to ensure safety and optimum perfor- the blade is sharpened.

  • Page 89: Adjustments

    T27i Maintenance Instructions Adjustments ADJUSTMENTS Levers should sit parallel to each other Transmission Control The following instructions reflect the most current transmission linkage configuration with a spring/ dampener connected to the steering lever (starting S/N 11-109716) and the FSC using direct linkage instead of a sliding fork disconnect (starting S/N 15-134121).

  • Page 90: Set Maximum Forward Travel Speed (Stop) - Step 3

    Maintenance Instructions T27i Adjustments Steering Lever Actuator Arms Forward Travel Stop Bolt Steering Adjustment Nut Transmission Forward Speed Control Stop and Control Arm Steering Lever Adjustment Tighten the jam nut on the forward travel stop Jam Nut Adjustment adjusting bolt.

  • Page 91: Straight Ground Travel Adjustment - Step 5

    T27i Maintenance Instructions Adjustments Start the engine (operate first at idle and then At this point it may not be possible to adjust normal operating speeds) and check for both wheels stationary since the differential movement of the drive wheels.

  • Page 92: Blade Clutch (Pto)

    Maintenance Instructions T27i Adjustments Blade Clutch (PTO) Adjust the bolt head clearance [1/4 to 3/8 in. (6.35 to 9.53 mm)] first (clutch engaged), then adjust Clutch Engagement/Belt Tension uncompressed spring length (clutch disengaged). The spring must be adjusted to an uncompressed The clutch engagement and PTO belt tension are overall length of 2-1/8 in.

  • Page 93: Clutch Disengagement/Brake Action

    T27i Maintenance Instructions Adjustments 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 WARNING apply the blade brake. The blade brake is activat-...

  • Page 94: Stop Block Eccentric Adjustment - Step 1

    Maintenance Instructions T27i Adjustments Use the following procedure to check and adjust Clutch Idler Pulley Travel Adjustment - Step 2 clutch disengagement and brake action: Adjust the stop block to give 1 to 1-1/2 in. (25 to 38 mm) pulley travel from “clutch engaged” to Stop Block Eccentric Adjustment - Step 1 “clutch disengaged”.

  • Page 95: Blade Brake Band Adjustment - Step 3

    T27i Maintenance Instructions Adjustments Blade Brake Band Adjustment - Step 3 NOTE: The length of the actuator rod is adjusted by disconnecting the bottom clevis and shortening After the pulley travel is set, make the following or lengthening accordingly. The standard pre-set...

  • Page 96: Forward Speed Control Friction Lock

    Maintenance Instructions T27i Adjustments Forward Speed Control Friction Lock The FSC friction lock is adjusted to hold the FSC Full selected forward speed when the steering levers Forward Position are moved. The friction should not be so heavy as to make moving the FSC difficult (too much friction).

  • Page 97: Steering Handles

    T27i Maintenance Instructions Adjustments Steering Handles Tilt-Up Deck Adjustable Stop* An adjustment range of approximately 3 in. (76 When the carrier frame hinge joint is properly mm) is available on the steering handles—the adjusted, the deck lock levers should move in and...

  • Page 98: Ghs "Full" Signal Horn Adjustment

    Maintenance Instructions T27i Adjustments GHS “Full” Signal Horn Adjustment Exhaust The vertical position of the Grass-Pak switch is ® Screen 4 to 4-1/2 in. critical to make sure the catcher box does not (10 to 11.5 cm) overfill causing the delivery chute to clog. The...
  • Page 99 (2) years* after the 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.
  • Page 100 WALKER MFG. CO. • 5925 E. HARMONY ROAD, FORT COLLINS, CO 80528 • (970) 221-5614 FORM NO. 011923 PRINTED IN USA www.walker.com ©2023 WALKER MFG. CO...

This manual is also suitable for:

T23

Table of Contents