Walker R21 Operator'S Manual Download

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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: 158429

P/N: 1000-1

Summary of Contents for R21

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 15842...

Page 2: ...le injury to the opera tor 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 clarif...

Page 3: ...Check Clean Engine Air Cooling System 36 Clean Grass Buildup Under Deck 37 Inspect Service Mower Blades 37 Check Security of Air Filtration Components 39 Check Discharge Shield 39 Lubricate Grease Fit...

Page 4: ...Table of Contents R21 Appendix Assembly Instructions 59 Assembling the Tractor 59 Assembling the Deck 60 Deck Caster Wheel Installation 60 Tilt Up Roller Wheel Installation 60 Installing the Deck 60...

Page 5: ...ine damage if warning is ignored and proper safety precautions are not taken IMPORTANT Identifies mechanical information demanding special attention since it deals with the possibility of damaging a p...

Page 6: ...is the prime mover including the engine drivetrain operator seat and controls to operate the mower TRANSAXLE transmits and controls power from the ground drive belt to the main drive wheel TRANSAXLE L...

Page 7: ...e helpful when obtaining replacement parts and maintenance assistance For ready reference please record these numbers in the space pro vided Serial Number Tractor Serial Number Location Serial Number...

Page 8: ...Deck 593 269 MOWER DECK Available Cut Width 42 or 48 in 107 cm or 122 cm Cutting Height 1 5 to 4 in 4 to 10 cm in 1 2 in 1 cm Increments Deck Suspension Independent Torsion Flex Frame with Caster Whe...

Page 9: ...ive Grade Unleaded Gasoline 87 Octane Minimum 10 Ethanol Maximum Cooling System Air Cooled Air Cleaner Engine Mounted Kohler Kohler P N 16 083 04 S Filter 16 083 05 S Precleaner ELECTRICAL SYSTEM Batt...

Page 10: ...g Brake Mechanical Cog Lock for each Transaxle Single Lever Control Neutral Transmission Release by Manual Dump Valve Final Drive Transaxle Direct to Drive Wheel Transmission Cooling Cooling Fan Mount...

Page 11: ...s are identified and explained in the sec tion Operator Controls on page 19 Deck Lift Handle Counterweight Spring Deck Caster Wheels Tilt Bar Socket Deck Tilt Bar Counterweight Spring Oil Dipstick and...

Page 12: ...eral Information R21 8 Rear View and Left Side View Tailwheel Fork and Wheel Footrests Tailpipe Tilt up Link Tilt Up Lock Hole Deck Support Pins Left Hand Drive Wheel LH Transaxle Spark Plug Access Ho...

Page 13: ...rcuit Breaker Not Visible Negative Battery Cable Positive Battery Cable RH Transaxle Fan Spark Plug Not Visible Fuel Gauge In line Fuel Filter Fuel Tank and Cap Seat Panel 5 Amp Fuses Two Blade Belt R...

Page 14: ...e especially children and pets a safe distance away from the area being mowed Always wear substantial protective foot wear Do not operate the machine barefoot or wearing sandals sneakers tennis shoes...

Page 15: ...expose you to chemicals in cluding Di 2 ethylhexyl phthalate which is known to the State of California to cause can cer and Di 2 ethylhexyl phthalate which is known to the State of California to cause...

Page 16: ...g the Forward Speed Control FSC lever into the NEUTRAL PARK position Disengage the blade drive when transport ing the machine across drives sidewalks etc Never attempt to make any adjustments while th...

Page 17: ...oing off the ramp Do not use an individual ramps for each side of the mower Safety During Maintenance To prevent accidental starting of the engine when servicing or adjusting the machine remove the ke...

Page 18: ...th battery cables before un plugging any wiring connectors or making repairs on the electrical system IMPORTANT Keep all applicable manuals immediately accessible to anyone who may operate or service...

Page 19: ...nition key 2 Warning Crushing dismemberment haz ard of bystanders Do not carry passengers Always stop machine if someone enters the area Always be aware of what is behind the machine before backing up...

Page 20: ...g thrown object hazard Keep bystanders away from the machine when operating 4 Warning entanglement hazard Keep all guards in place while engine is running 5 Forward Speed Control Move lever forward to...

Page 21: ...ing the machine Location Deck Carrier Frame Part Number 8600 57 Warning pinch point under the lever Location Deck Discharge Shield Part Number 5848 3 Warning thrown object hazard Always keep the disch...

Page 22: ...et Keep all body parts away from rotating mower blades Do not step on end of deck 8600 12 Location Side of Engine Part Number 8600 12 Warning carbon monoxide CO poisoning hazard CO emitted by a runnin...

Page 23: ...n Switch The ignition switch is located on the right front of the body and is used to start and stop the engine The switch has three positions O is the OFF position I is the ON RUN position is the STA...

Page 24: ...he right side of the seat behind the FSC lever and is used to control engine speed Moving the lever forward toward the FAST position increases en gine speed moving it backward toward the IDLE position...

Page 25: ...ing levers will not cause any change in tractor motion there will be no steering lever reaction and there will be no machine damage BLADE CLUTCH PTO Operating Controls Top View from Drivers Point of V...

Page 26: ...r blades The blade clutch switch has two positions Pull out the switch to engage the PTO that drives the blades and push down the switch to disengage the PTO and en gaged the blade brake Parking Brake...

Page 27: ...n 4 6 Hours C H G OIL Lubricate and Check Levels 24 26 Hours LUBE Oil Change 49 51 Hours C H G OIL These intervals reflect the actual time that the reminder will flash one hour prior to and one hour a...

Page 28: ...mainte nance FILL FUEL TANK Fill the fuel tank using clean fresh automotive grade unleaded gasoline 87 octane minimum 10 ethanol maximum IMPORTANT DO NOT permit dirt or other for eign matter to enter...

Page 29: ...ety interlock switch system PRE VENTS CRANKING the engine with any one of these three controls in the OPERATING position 1 Forward Speed Control out of neutral 2 blade clutch PTO engaged or 3 parking...

Page 30: ...ravel by pulling both steering le vers backward to the NEUTRAL 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 w...

Page 31: ...lling turn one wheel roll ing forward while the other rolls back ward Practice maneuvering the mower until you can make it go exactly where you are aim ing Remember for an emergency stop or in case of...

Page 32: ...should be repaired or replaced before op erating the mower Contact your Walker dealer for service Stopping the Machine 1 Pull the steering levers to the NEUTRAL position and then move the FSC lever to...

Page 33: ...ul to clean under the deck inspect and replace the blades and lubri cate spindle grease fittings DANGER Before raising the mower deck always stop the engine and re move the key from the igni tion 1 St...

Page 34: ...on Mowing with a lower engine RPM causes the mowing blade to not cut clean and tear the grass The engine is designed to be operated at full speed When mowing in adverse conditions tall and or wet gras...

Page 35: ...n one wheel rolling forward while the other rolls backward DANGER Do not mow or drive the tractor within 5 feet 1 5 meters of an embankment or retaining wall with drop off When operating on a slope re...

Page 36: ...transaxle lockout arm tab back and toward the middle of the machine to catch the step that holds the arm in the LOCKOUT posi tion Repeat on the other side LH Transaxle Lockout Arm Tab LH Transaxle Lo...

Page 37: ...y moving the tractor The tilt up configura tion should only be used when the tractor is parked When transporting a tractor with the deck in the tilt up position on a truck or trailer the deck should b...

Page 38: ...heck Discharge Shield x 39 Lubricate Grease Fittings and Oil Points x 39 Check Tire Pressure x 41 Check Drive Belts Ground Drive Blade x 41 Check Safety Switch System x 41 Clean Replace Engine Preclea...

Page 39: ...running 2 Before removing the dipstick clean the area around the dipstick to keep any dirt or debris out of the engine Oil Dipstick Oil Dipstick Location 3 Remove the dipstick wipe off with a clean ra...

Page 40: ...engine NOTE For better access to the rotating screen and a more thorough cleaning remove the screen guard The guard is secured with a single screw along the front edge of the engine Screen Guard Atta...

Page 41: ...achine with deck tilt up pivot joint unlocked Inspect Service Mower Blades Frequency Each use or after 10 hours of opera tion Check mower blade s for straightness sharp ness and condition of the cutti...

Page 42: ...OTE Blades can be sharpened with an electric blade sharpener conventional electric grinder or a hand file CAUTION ALWAYS wear eye protection and gloves when sharpening a blade Wing Tip Do Not Grind or...

Page 43: ...o the down position once it has been inspected Discharge Shield No Gap in Lowest Position Discharge Shield Lowered Lubricate Grease Fittings and Oil Points Frequency Every 25 hours or more often in ex...

Page 44: ...Maintenance R21 40 6 5 4 4 3 1 1 2 2 3 5 Lubrication Points...

Page 45: ...Safety Switch System Frequency Every 25 hours WARNING It is important to check and maintain the safety switch system for safe operation of the ma chine There are five 5 safety interlock switches on t...

Page 46: ...erator is in the seat the engine is run ning the parking brake is disengaged and the engine stalls when the FSC is moved out of NEUTRAL PARK An operator is in the seat the engine is run ning the parki...

Page 47: ...d air It must be replaced if dirty or dam aged 1 With the engine stopped rotate the levers on the engine air cleaner cover outward to unlock the cover Remove the cover 2 Slide the precleaner off of th...

Page 48: ...e en gine 4 Remove the dipstick and oil drain plug and drain the oil into a suitable container The oil drain is located behind the left drive tire Be sure to allow ample time for complete drain age Oi...

Page 49: ...ill only to the F mark DO NOT overfill the crank case oil above F mark as this CAN result in en gine overheating loss of power and pos sible engine damage 11 Start the engine and check for oil leaks a...

Page 50: ...he housing on the transaxles clean and free of obstruction is essential to avoid overheat ing the transaxle fluid and short ening transaxle life 1 With the engine turned off and key removed from the i...

Page 51: ...the blades do not stop within five 5 sec onds the brake needs to be repaired or replaced before operating the mower Contact your local Walker Dealer Replace Spark Plugs and Set Gap Frequency Every 50...

Page 52: ...page 56 or contact your Walker Dealer Check Transmission Control Settings Frequency Yearly or when an out of adjustment condition is observed Check Neutral Park Position With the mower parked on level...

Page 53: ...he mowing season the mower should be serviced and prepped for storage to protect the equipment from damage Mower Preparation for Storage 1 Thoroughly clean the mower and deck by removing all grass and...

Page 54: ...park plugs and pour 1 oz of engine oil into the cylinders Replace spark plugs and crank engine slowly to distribute the oil Restarting the Mower After Storage After long term storage complete this pro...

Page 55: ...the R21 the blade drive belt PTO and the ground drive belt If either belt shows wear or damage during a regular inspec tion the belt should be replaced NOTE Only use Walker replacement belts on this m...

Page 56: ...de a new belt Walker P N 1731 42 or 1731 1 48 under the tractor and route it through the middle sets of idler pulleys Un lock the carrier frame pivot joint on each side of the deck to lower the deck a...

Page 57: ...ot 11 Lower the seat panel raise and lock the car rier frame and reinstall the deck belt cover Tighten the four 4 wing nuts to secure the cover Replacing the Ground Drive Belt NOTE The first part of t...

Page 58: ...y and slide the belt out 10 Slide in the replacement ground drive belt Walker P N 1250 and position the belt on clutch pulley NOTE The Belt Routing decal located under the seat panel shows correct bel...

Page 59: ...convenient gauge to measure blade height above ground during the leveling pro cess 3 Check the side to side level Rotate each blade sideways and measure the distance from blade tip to ground on each s...

Page 60: ...ck FSC in Full Forward Position FSC Friction Adjustment Test 1 Place the FSC lever in the full FORWARD position and pull both steering levers fully back the FSC lever should not move If the FSC lever...

Page 61: ...With the engine at normal operating speed check for movement of the drive wheels 4 Raise the seat panel Using a wrench on one tracking adjustment nut rotate the control rod counterclockwise just until...

Page 62: ...ight tracking and neutral are both achieved the adjustment is complete If straight tracking and neutral cannot both be achieved turn the tracking adjustment nut on the faster side counterclockwise unt...

Page 63: ...adjust the inflation of the tires The tire inflation recom mendations are Drive 15 PSI 103 kPa Tailwheel 20 PSI 137 kPa For tractors shipping outside the US the following additional steps will need to...

Page 64: ...3 8 16 in Keps nut 4 Tighten the bolt and nut until the inner bearing race bottoms against the inside of the wheel fork will not turn while the wheel spins freely without binding Axle Spacer Tube Axl...

Page 65: ...nel to verify the belt placement The belts should run flat be tween the pulleys Lift panel to verify belt placement Belt Access Panel 4 Roll the deck to the tractor with the excess belt sliding under...

Page 66: ...ng a 11 16 in wrench tighten the nuts and then loosen them 1 2 turn until the pivot joint moves freely to allow for the deck to pivot and tilt up Install Nut on Carriage Bolt 9 Raise the footrest 10 R...

Page 67: ...m to tension the belt Tension Belt with Deck Idler Arm 16 With the drive belt in place check the position of the stop in the slot of the belt tensioning idler arm the stop should be near the middle of...

Page 68: ...________________________ ______________________________________________________________________________________________________________ ________________________________________________________________...

Page 69: ...________________________ ______________________________________________________________________________________________________________ ________________________________________________________________...

Page 70: ......

Page 71: ...for transporting the mower to and from the place where the inspection and or warranty work is performed 3 HOW TO OBTAIN SERVICE UNDER THIS WARRANTY Warranty service can be arranged by contacting the...

Page 72: ...WALKER MFG CO 5925 E HARMONY ROAD FORT COLLINS CO 80528 970 221 5614 FORM NO 091719 PRINTED IN USA www walker com 2019 WALKER MFG CO...

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