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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.

Location: Catcher Door Hinge Bar,

LH and RH Sides

Part Number: 8600-10

Caution - Pinch point.

● Keep all body parts clear when closing grass

catcher door.

Location: LH Gear Axle

Part Number: 5810-3

Location: Oil Reservoir

Part Number: 5024-24

Location: Front Body, RH Side Adjacent to

Operator Seat

Part Number: 8600-30

Parking Brake

● Move lever forward to engage Parking

Brake; back to disengage.

Location: Front Body, LH Side Adjacent to

Operator Seat

Part Number: 8600-31

Throttle

● Move lever forward to increase engine speed;

back to idle.

Location: Jackshaft Support Adjacent

to Dipstick

Part Number: 7827

Summary of Contents for T27i

Page 1: ...nual 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 17058...

Page 2: ...or or others If anything in this manual is confusing or hard to understand please contact your local authorized dealer or call our service department at 970 221 5614 for clarification before operating...

Page 3: ...g Instructions 30 Control Identification Location and Function 30 Operating Controls 30 Engine Throttle 30 Forward Speed Control FSC 31 Steering Levers 31 Blade Clutch PTO 31 Front Body Latch Release...

Page 4: ...tion Components 72 Battery 72 Cleaning the Terminals 72 Charging the Battery 73 Tire Pressure 73 Wheel Bolt Torque 73 Sharpen Mower Blades 73 Drive Belts 74 Mower Deck Gearbox Oil Seals 75 Spark Plugs...

Page 5: ...ers to the dual hydrostatic transmissions which drive the main wheels HYDROSTATIC TRANSMISSION transmits and controls power from the ground drive belt to the main drive wheel LEFT HAND LH refers to th...

Page 6: ...d it is important to find a local authorized servicing agent of the component man ufacturer Any unauthorized work done on these components during the warranty period may void the warranty If you have...

Page 7: ...32 F 0 C Oil Filter Alternative Option 200 Hour Kohler Filter P N 12 050 01 S Cooling System Air Cooled Fuel Tank Capacity gal L 4 7 17 8 Fuel Regular Grade Unleaded Gasoline 87 Octane Minimum 10 Eth...

Page 8: ...Service SAE E P 80W 90 API GL 5 Gear Lube Final Drive Oil Capacity fl oz L 24 0 71 Ground Travel Speed Forward MPH km h Reverse MPH km h 0 7 0 11 Infinitely Variable 0 5 0 8 Infinitely Variable BLADE...

Page 9: ...e Wheel Blower Brake Band Brake Works in Combination with PTO Clutch Stops Blower within Five 5 Seconds of PTO Disengagement Max Blower RPM 4000 Hi Dump Option Max Lift Capacity lb kg 200 91 Grass Cat...

Page 10: ...Deck DC48 1 93 236 Width in cm Tractor Only Outside Tire 39 99 Tractor with 48 Collection Deck DC48 1 49 25 125 Tread Width 30 77 Height in cm Tractor 50 127 Weight lb kg Tractor Only 787 357 Tractor...

Page 11: ...Catcher Tilt Up Latch Spring Clip Turbine Precleaner Deck Caster Wheel Deck Lift Handle Cutting Height Adjustment Deck Support Pins and Height Adjustment Hitch Pins Fuel Tank and Cap Transmission Con...

Page 12: ...movable Grass Catcher Screen Not Visible Instrument Panel Guard Instrument Panel Box Shock Mounted Dump Flap Tailwheel Fork and Wheels Catcher Air Exhaust Muffler Catcher Door Handle Catcher Lift Dump...

Page 13: ...e Battery Cable 30 Amp Circuit Breaker Precleaner Tube Air Filter Restriction Gauge Fuel Tank PTO Clutch Lever Muffler Neutral Safety Switch Fuel Pickup Line Oil Dipstick RH Transmission Lockout Lever...

Page 14: ...ed by Walker Manufacturing must take full responsibility for safety The Walker Rider Lawnmower has been designed with many safety features to protect the operator from personal harm or injury However...

Page 15: ...1 Forward Speed Control FSC out of NEUTRAL PARK 2 PTO Clutch ENGAGED or 3 Parking Brake DISENGAGED NOTE There is a 1 2 second time delay function on the seat switch to avoid engine power interruption...

Page 16: ...ignition interlock switch normally prevents starting of the machine if these controls are in the OPERATING position 7 Do not operate machine if the operator presence safety switch system is not work...

Page 17: ...f the door frame The door may slam shut with consider able force CAUTION Use leg muscles and firm footing when lift ing the catcher to dump avoid bending at the waist and using back muscles in order t...

Page 18: ...ltering the equipment or engine in any man ner which adversely affects its operation perfor mance durability or use will VOID the warranty and may cause hazardous condi tions 8 Never attempt to discon...

Page 19: ...own object hazard Never engage the PTO with grass catcher raised Location Engine Shroud Part Number 5855 8600 16 Location Rear Cross Member of Front Body Part Number 8600 16 Important Lower front body...

Page 20: ...re a cutting dismemberment hazard to hands and feet Keep all body parts away from rotating mower blades Do not step on end of deck 8600 14 Location Deck Carrier Frame Part Number 8600 14 Warning do no...

Page 21: ...r LH and RH Sides Part Number 8600 10 Caution Pinch point Keep all body parts clear when closing grass catcher door Location LH Gear Axle Part Number 5810 3 Location Oil Reservoir Part Number 5024 24...

Page 22: ...d ear protection when operating the machine 2 Warning roll over hazard Do not operate on slopes greater than 15 degrees 3 Warning thrown object hazard Keep bystanders away from the machine when operat...

Page 23: ...e resulting in acid leakage and severe damage to the machine A hazard may be created by damage to critical working parts and safety systems CAUTION Important Battery Service Installation and Charging...

Page 24: ...terminal red cable and boot connects to the Positive terminal Slide the rubber boot up and over the battery post making sure it covers the post completely to prevent an electrical short Battery Clamp...

Page 25: ...ion Deck Deck Discharge Deflector Shield Installation Side Discharge Models Only Attach the side discharge deflector shield using two 2 3 8 16 x 1 1 4 in bolts 3 8 16 ESNA nuts and 3 8 in wave spring...

Page 26: ...oupler Tube 3 Lightly grease each deck support arm 2 on the tractor Refer to Mower Deck Installation photo for location of deck support arm Carrier Frame Tube Sockets Deck Support Arms Mower Deck Inst...

Page 27: ...Support Arms Use Hitch Pins to Lock Deck on Support Arms WARNING Failure to install the hitch pins will result in the deck disconnecting from the tractor during operation 8 To reduce the weight of li...

Page 28: ...prings 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 If required the spring tension can be adjusted by tightening or loos...

Page 29: ...dure 2 Check the side to side level Rotate each blade sideways and measure the distance from blade tip to ground on each side If mea surements vary more than 1 8 in 3 mm add a washer shim under the de...

Page 30: ...the rear 1 4 in 6 mm to 3 8 in 10 mm higher than the front If either set of measurements are not within tolerance perform the Deck Leveling Procedure Deck Leveling Procedure 1 Position the mower on a...

Page 31: ...t opera tion some of these items will not need to be checked every day but the operator should be aware of the condition of each For proper fuel and lubricants refer to Specifica tions on page 3 F FIL...

Page 32: ...Light and Warning Horn should all operate indicating normal function F CHECK FUNCTION OF SAFETY INTERLOCK SWITCHES Refer to Safety Switch System on page 76 to check for proper operation of safety swit...

Page 33: ...tilt up position Do not move the tractor with the deck in the tilt up position F CHECK MOWER BLADE CONDITION SHARPNESS AND SECURITY OF MOUNT ING The blade mounting nuts on gear driven decks should be...

Page 34: ...important for safe and efficient operation of the mower 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 leve...

Page 35: ...lever sets the maximum forward speed and also sets the forward position of the steering levers The steering levers operate only with a backward pulling movement of the lever which causes the drive whe...

Page 36: ...sition of the Steering Levers Forward Position No Control Change LEFT WHEEL STEERING LEVER Reverse Drive Wheel Motion Position Neutral Park Position RIGHT WHEEL STEERING LEVER Fast Throttle Position I...

Page 37: ...backward to release the pin Engaged Position Parking Brake Engaged Disengaged Position Parking Brake Disengaged Transmission Lockout Levers The transmission lockout levers disengage the hydrostatic tr...

Page 38: ...Change Break In 24 26 hours Lube 49 51 hours Oil Change The hourmeter reminders are set for the most frequent service intervals Follow the intervals outlined in the Maintenance Schedule Chart on page...

Page 39: ...f a low oil pressure condition exists Over Temperature Warning Light Horn The over temperature warning light and horn indi cate that the engine cylinder head temperature is above the safe operating li...

Page 40: ...cuit breaker is located on the instrument panel A button pops out if the circuit breaker trips The circuit breaker protects the safety circuits and GHS In addition an auto reset 30 amp master circuit...

Page 41: ...nstalled 1 Move the FSC out of NEUTRAL PARK posi tion to the desired forward speed DO NOT hold for ward on steering levers It is not nec essary to hold the FSC lever in position since a friction lock...

Page 42: ...eed slow until learning the control response WARNING When moving forward DO NOT suddenly put the tractor in reverse by rapidly pulling on the steering levers especially when go ing downhill as this ca...

Page 43: ...the operator s protection IMPORTANT DO NOT engage the blade clutch when transporting the mower across drives side walks loose materials etc DO NOT engage the blade clutch with the PTO shaft disconnec...

Page 44: ...ttle toler ance for movement CAUTION An operator presence switch seat switch will cause the engine to stop if the parking brake is in the DISENGAGED position and the operator is not in the seat The fu...

Page 45: ...stop tractor 2 Push down on deck lift pedal until it latches in the full up transport position 3 Select the desired cutting height by moving the hitch pin to the location shown on the cutting height d...

Page 46: ...ased Cam in UNLOCKED Position Lockout Lever Normal Operating Position RECOMMENDATIONS FOR MOWING DANGER Do not mow around overhanging tree branches or bushes at the same height as the operator s torso...

Page 47: ...eering levers since the hydrostatic transmissions are power boosted controls and jerk ing the levers can easily slip the tires For sharp turns do not allow the inside wheel to stop and twist on grass...

Page 48: ...owing recom mendations are offered Do not move the tractor with the deck in the tilt up position since both the roller wheels on the back of the deck and the GHS discharge chute may be damaged by movi...

Page 49: ...ection Mower Deck Deck Discharge Chute Shear Bolt PTO and Blade Gear Drive Full Signal Horn Actuator Rod Powerfil Drive Motor Exhaust Screen Removable Catcher Door Spring Not Visible Grass Catcher Cat...

Page 50: ...ves particularly when the leaves are piled in a thick layer To make this ad justment the hitch pins in the two 2 front deck support pins are repositioned 2 to 3 notches higher while leaving the rear p...

Page 51: ...b ft 81 N m Blade Rotation for Standard Rotation GHS Mower Deck Bottom View FORWARD Rear Discharge Chute Blades Must Operate at Right Angles 90 Degrees Mounting Nut Torque 60 lb ft 81 N m Blade Rotati...

Page 52: ...ay be checked by turning the ignition switch to the ON RUN position and moving the blade clutch to the ENGAGED position The spout should oscillate approximately 35 cycles per minute NOTE If the grass...

Page 53: ...ilgate 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 ar...

Page 54: ...ith the one hand while continuing to hold up on the bag strap with the other hand Refer to photos for posi tioning the bag and dumping Catcher Lift Dump Handle Dumping Catcher into Dump Bag 5 Lower th...

Page 55: ...raising the catcher with the power dump jiggle the steering levers and make the tractor bounce a little to unstick the grass and make it slide out of the catcher NOTE With the power dump mechanism in...

Page 56: ...in the NEUTRAL PARK Position and the parking brake engaged and by standers stay clear when the Hi Dump is operating To avoid tipping over the ma chine should be parked on LEVELGROUND when raising dum...

Page 57: ...onents 1 2 Catcher Door Grass Catcher Upper Arm Cable Guide Catcher Door Gas Spring Dog Leg Assembly Rubber Bumper Cable Assembly Lift Channel Fork Power Dump Ram Actuator Cable Guide Lower Arm Door A...

Page 58: ...Terminals Not Visible Grass Catcher Upper Arm Cable Guide Catcher Door Gas Spring Lower Arm Door Arm Actuator Gas Spring Assembly Safety Lockout Arm Dump Cylinder Catcher Pivot Arm Cable Assembly Lif...

Page 59: ...n Oil and Filter x 64 Replace Air Filter Element Safety Filter Dust Ejection Valve x 67 Replace Fuel Filter x 83 Service Battery x 72 Check Transmission Control Settings x 75 Check FSC Friction Lock x...

Page 60: ...and moving parts when checking airflow Operate the engine at full speed when mowing This allows the engine to produce full horsepower and move more cooling air through the engine cool ing fins Air Cle...

Page 61: ...el before use and after each 8 hours of continuous operation IMPORTANT The importance of checking and maintaining the proper crankcase oil level cannot be overemphasized Check the oil level BEFORE EAC...

Page 62: ...er market oil filters may not seal properly and or may not have the correct pressure relief valve for proper lubrica tion 7 Install the new oil filter on the engine Turn the filter clockwise until the...

Page 63: ...arbox Blade Drive Gearboxes 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 gea...

Page 64: ...Lubricate the dolly wheel pivot every 25 hours with general purpose grease 3 Lubricate both drive shaft u joints every 25 hours with SAE general purpose lithium or molybdenum base grease Belt Drive G...

Page 65: ...lug If additional oil is needed remove the breather vent on top of ax le and fill until oil is at the level plug Change axle oil every 1000 hours or two 2 years Grease Fitting and Oil Point Lubricatio...

Page 66: ...2 27 Belt Tightener Pivot Grease 1 PTO Clutch Ident Lubrication No No Location Type Places 28 BrakeActuator Rod and Brake Oil 3 Band Pivot Pins Clevis 29 Throttle Control Cable Ends Oil 2 30 BrakeActu...

Page 67: ...ce Instructions Lubrication 63 Chassis and Deck Lubrication Points DC48 Shown 1 1 2 2 20 22 19 24 33 35 36 23 29 38 23 20 13 32 26 25 26 27 28 30 17 16 29 31 34 31 14 14 15 19 21 37 12 5 4 4 11 12 7 4...

Page 68: ...ht gauge window 3 If the oil is below the mid way point add oil The only Walker approved oil for the transmis sions is Mobil SHCTM 630 oil Walker P N 6450 20 Thoroughly clean around the res ervoir fil...

Page 69: ...e top of each transmission Remove the fill plugs and use a small funnel to fill to the bottom of the threads approximately 16 oz Reinstall the fill plugs See Fill Transmis sion Oil illustration for lo...

Page 70: ...airflow separates dust from the air giving the initial stage of air clean ing Dust particles are exhausted through a single small vent in the side of the hous ing Since no dust is trapped the preclean...

Page 71: ...ir Filter Restriction Gauge Location Inspect the primary filter element after every 100 hours of service and replace the element and safety filter yearly or when dirty or damaged More frequent replace...

Page 72: ...leaner canister clean Use special care to clean both the inside and outside surfaces of the outlet tube IMPORTANT Any dust left on the inside of the outlet tube will go into the engine and cause wear...

Page 73: ...is little or no airflow clean the cooling fins as follows DANGER Make sure to keep hands clear of exhaust pipe muffler and moving parts when checking airflow Every 100 hours inspect and clean the cool...

Page 74: ...oler ated 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 normal operating po...

Page 75: ...vers ing the removal procedure GHS Exhaust Screen Refer to Cleaning the GHS Exhaust Screen on page 49 Hydrostatic Transmission Cooling Fins Keeping the cooling fins on the hydrostatic trans missions c...

Page 76: ...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 sa...

Page 77: ...102 to 115 N m Sharpen Mower Blades Check mower blade s for straightness sharp ness condition of the cutting edge and bal ance every 10 hours of operation or more often when mowing abrasive type gras...

Page 78: ...he blade rotates downward grind remove metal on that end until the blade will balance The blade is properly balanced when neither end drops Balance of a blade is generally maintained by removing an eq...

Page 79: ...ps every two 2 years Engine Starter Yearly or every 500 hours disassemble and clean the solenoid shift starter Refer to the Kohler Ser vice Manual for this procedure or contact an autho rized Kohler e...

Page 80: ...ake is disengaged and the Forward Speed Control FSC or PTO is engaged Without an operator in the seat the engine starts and continues to run with the Forward Speed Control FSC and or PTO engaged or th...

Page 81: ...parts CAN result in product malfunction and possible injury to the operator and or others Drive Belts There are four 4 individual belts on GHS mod els or three 3 belts on SD models Jackshaft Drive Be...

Page 82: ...to lift the clutch idler away from the belt d Next remove the belt from the engine pulley and then the PTO drive pulley 2 Install the PTO drive belt by reversing the removal procedure IMPORTANT Make s...

Page 83: ...y depressing the spring loaded idler arm c Roll the belt off the jackshaft pulley and remove Jackshaft Drive Belt Disengaged Jackshaft Drive Belt Engaged 2 Reverse the removal procedure to replace the...

Page 84: ...ightener arm Roll the belt off the blower pulley GHS Blower Drive Belt Assembly Disengaged GHS Blower Drive Belt Assembly Engaged Depress Idler Pulley Down to Relax Belt GHS Blower Drive Belt Blower D...

Page 85: ...relax belt b Slide belt off pulleys then release the idler Hydrostatic Ground Drive Belt Assembly Disengaged Hydrostatic Ground Drive Belt Assembly Engaged 2 Reverse the procedure to install the hydro...

Page 86: ...g Rotate Clevis and Belt Tensioner Stop Bolt Rotate Belt Tensioner Arm Remove Belt Tension 2 To install the deck drive belt a Install and route the belt as shown on the belt routing decal located on t...

Page 87: ...ull fuel lines off filter 2 Replace filter making sure that the arrow on the filter is aligned with the fuel flow through the filter 3 Verify that the fuel lines and clamps are se curely attached and...

Page 88: ...perated over sandy soil and if blades are allowed to wear a slot may be worn into the wing tip of blade Eventually a piece of the blade may break off creating a serious potential for injury or damage...

Page 89: ...levers should be adjusted to sit evenly using the following procedure 1 Examine the steering levers to make sure they are parallel front to back in relation to one another If they are not equal adjust...

Page 90: ...ins to move backward then make two addi tional turns Next reverse and turn the control rod clockwise CW until the steering lever stops moving forward and then make one additional turn Tighten the jam...

Page 91: ...adjustment should be made for one wheel stationary and the other moving forward slightly 6 Check the neutral safety switch for closure and function with the FSC in neutral the en gine will not start w...

Page 92: ...ed and PTO Clutch Disengaged illustrations Adjust the bolt head clearance 1 4 to 3 8 in 6 35 to 9 53 mm first clutch engaged then adjust uncompressed spring length clutch disengaged The spring must be...

Page 93: ...adjustable and is set to give belt release without excessive slack and to apply the blade brake The blade brake is activat ed by the brake actuator rod linkage to the clutch idler pulley mechanism The...

Page 94: ...c block that will allow four adjustment positions from 5 16 to 11 16 in 8 to 17 mm 11 16 in 17 mm 9 16 in 14 mm 7 16 in 11 mm 5 16 in 8 mm PTO Belt Tightener Stop Block Adjustments Clutch Idler Pulley...

Page 95: ...Tightener 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 a...

Page 96: ...should not move If the FSC lever moves back when the steering levers are pulled back the friction needs to be in creased FSC Full Forward Position Pull Steering Levers Back To Check Friction Lock Forw...

Page 97: ...de Steering Handle Adjustment Tilt Up Deck Adjustable Stop When the carrier frame hinge joint is properly adjusted the deck lock levers should move in and out of the engaged and disengaged positions f...

Page 98: ...h with the engine running Projectiles CAN be thrown out of the grass delivery spout and CAN cause serious injury to bystanders or property damage 2 Measure from the exhaust screen top of catcher to th...

Page 99: ...IS WARRANTY DOES NOT COVER A This warranty does not cover defects caused by depreciation or damage caused by normal wear accidents improper maintenance improper use or abuse of the product alterations...

Page 100: ...WALKERMFG CO 5925E HARMONYROAD FORTCOLLINS CO80528 970 221 5614 FORM NO 011923 PRINTED IN USA www walker com 2023 WALKER MFG CO...

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