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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
Beginning S/N: 193996
Instructions Prior to Operating Machine
P/N: 1000-12

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  • 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: 193996 Instructions Prior to Operating Machine P/N: 1000-12...
  • 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

    R22x Table of Contents General Information Maintenance Highlighted Information..........1 R22x Maintenance Schedule Chart .....34 Glossary ..............2 Check Engine Crankcase Oil.......35 Servicing of Engine and Transaxle Components...2 Check/Clean Engine Air Cooling System ....36 Identifying Number Locations ........3 Clean Grass Buildup Under Deck......37 Tractor and Deck Identifiers ...........3...
  • Page 4 Table of Contents R22x Appendix: Assembly Instructions Steering Handle Adjustment ........59 Forward Speed Control Friction Adjustment ..59 Assembling the Tractor ........62 Neutral Function Adjustment .......60 Seat Installation ............62 Straight Tracking Adjustment .......61 Steering Lever Handle Installation........62 Check the Drive Tires ...........62 Maximum Forward Speed Adjustment....61...
  • Page 5: General Information

    DEATH, if warning is conceivable situations. Most accidents associated ignored and proper safety precautions are not with the operation or maintenance of a Walker taken. Mower are caused by disregarding basic safety precautions or specific warnings. Such accidents, in most cases, can be prevented by being aware of the dangers present.
  • Page 6: Glossary

    Service Department for assistance: functions as a cruise control, and provides a NEUTRAL-PARK function to stop the mower. Walker Manufacturing Company 5925 E. Harmony Road ● GROUND DRIVE refers to the dual transaxles Fort Collins, CO 80528 which drive the main wheels.
  • Page 7: Identifying Number Locations

    R22x General Information Identifying Number Locations The tractor serial number plate is affixed to the Serial Number tractor chassis behind the seat. The mower deck serial number plate is affixed alongside the angle iron framing on the left beside the belt cover. The engine serial number is on right side of the engine.
  • Page 8: Specifications

    General Information R22x Specifications DIMENSIONS Length in. (cm) Tractor Wheel Base 42.25 (107) Tractor with Tilted 54" Deck 70 (178) Tractor with 42" Deck 89.25 (227) Tractor with 48" Deck 92.25 (234) Tractor with 54" Deck 91.25 (232) Width in. (cm)
  • Page 9: Electrical System

    Cooling System Air-Cooled Air Cleaner Engine Mounted (Rehlko) Rehlko P/N 16 083 04-S (Filter), 16 083 05-S (Precleaner) ELECTRICAL SYSTEM Battery 12 Volt, 350A (CCA) [Walker Fulbat] Charging System Flywheel Alternator Charging Output 18 Amp DC (Regulated) System Polarity Negative Ground...
  • Page 10 Electric Clutch [Stops Blades within Five (5) Seconds of Disengage- ment] DRIVE BELTS Ground Drive Belt Walker P/N 1250-4 Blade Drive Belt Walker P/N 1731 (48" Deck) Walker P/N 1731-1 (42" Deck) Walker P/N 1731-2 (54" Deck) TRANSMISSION Manufacturer/Model Dual, Independent Hydro-Gear ZT-3100 Integrated Transaxles ®...
  • Page 11: Component Identification

    R22x General Information Component Identification This section identifies the main features of the R22x. Control features are identified and explained in the sec- tion “Operator Controls” on page 19. Oil Dipstick Lights and Fill Muffler Guard Drive Belt Cover Counterweight...
  • Page 12 General Information R22x Footrests Muffler Guard Deck Support Tilt-Up Link Tailpipe Tilt-Up Lock Transaxle Hole Left Hand Spark Plug Drive Wheel Access Hole Tailwheel Fork and Wheel Spread Axle (Tail Wheel) Rear View and Left Side View...
  • Page 13 R22x General Information Seat Panel Negative (-) 5 Amp Fuses Battery (Two) Cable PTO Blade Drive Belt PTO Belt RH Transaxle Tensioner Lever RH Transaxle Fill Port Maximum Forward Speed Adjustment Screw Positive (+) Battery Cable Transaxle Fuel Tank Ground Drive...
  • Page 14: Safety Instructions

    Safety Before Operating ..............10 Safety During Operation ..............11 Safety During Maintenance ..............13 Safety, Control, and Instruction Decals ..........14 The Walker Rider Lawnmower has been designed ● Do not mow with bystanders in the area. with many safety features to protect the opera- Keep everyone, especially children and pets, tor from personal harm or injury.
  • Page 15: Safety During Operation

    Safety During Operation page 42. If a safety switch is not function- ing properly, do not use the mower until it can be repaired by a Walker Dealer. Operate the mower only in daylight or in ● good artificial light with good visibility of the area being mowed.
  • Page 16 42. If a safety switch is not functioning properly, do not use the mower until it can be ● The maximum recommended slope oper- repaired by a Walker Dealer. ating angle is 15 degrees or 27% grade. When operating the machine on a slope: ●...
  • Page 17: Safety During Maintenance

    R22x Safety Instructions In case of a clogged or plugged mower ● ● When equipped with a factory authorized deck: hitch kit, do not exceed recommended tow capacities. Do not tow with the PTO clutch or mower blades engaged, and do not allow 1.
  • Page 18: Safety, Control, And Instruction Decals

    Safety Instructions R22x Safety, Control, and Instruction Do not change the engine governor set- ● Decals tings or overspeed the engine. The gover- nor has been factory-set for maximum-safe engine operating speed. Safety, control, and instruction decals are installed ●...
  • Page 19 R22x Safety Instructions Part Number: 8600-59 (Continued) 1. Warning – entanglement hazard. Keep all guards in place while engine is running. Warning – thrown object hazard. Keep bystanders away from the machine when operating. 2. Warning – read Operator’s Manual before servicing or performing maintenance.
  • Page 20 Safety Instructions R22x Part Number: 8600-58 (Continued) 1. Warning – read Operator’s Manual before operating the machine. 2. Warning – wear eye and ear protection when operating the machine. 3. Forward Speed Control Move lever forward to increase speed; back to stop.
  • Page 21 R22x Safety Instructions 8600-14 Location: Deck Carrier Frame Part Number: 8600-14 Location: Deck Discharge Shield Part Number: 5848-3 Warning – do not operate the machine with the deck tilted up. Warning – thrown object hazard. □ Always keep the discharge shield in the lowest position when operating.
  • Page 22 Safety Instructions R22x 8600-28 Location: Each End of Mower Deck Part Number: 8600-28 1. Warning – thrown object hazard. □ Keep bystanders away from the ma- chine when operating. □ Clear lawn of debris before operating. □ Keep any discharge deflector in place Location: Seat Panel (Underside) and in the lowest position.
  • Page 23: Operating Instructions

    Operating Instructions In This Section... Operator Controls ................19 Pre-Operation Checklist ..............24 Starting the Engine ................25 Adjusting Ground Speed and Steering..........25 Engaging the Blades ................27 Stopping the Machine...............28 Adjusting the Cutting Height .............29 Deck Tilt-Up Position ................29 Recommendations for Mowing ............30 Transaxle Lockout ................32 Recommendations for Towing ............33 Recommendations for Tilt-up Deck Operation and Transport ..33...
  • Page 24: Engine Throttle

    Operating Instructions R22x Forward Speed Control (FSC) Seat Panel Latch Parking Brake Throttle Steering Levers Ignition Switch Blade Clutch Switch Light Switch Hourmeter Operator Controls gine speed; moving it backward toward the IDLE position decreases engine speed. Steering Levers Each drive wheel is controlled by its own indepen- dent steering lever, for both steering function and for forward or reverse motion.
  • Page 25 R22x Operating Instructions NOTE: Pushing forward on the steering levers will The Forward Speed Control (FSC) lever sets the maximum forward speed, and also sets the for- not cause any change in tractor motion - there will ward position of the steering levers.
  • Page 26: Forward Speed Control (Fsc)

    Operating Instructions R22x Forward Speed Control (FSC) IMPORTANT: Stop the tractor completely be- fore engaging the parking brake. If the tractor is moving when the brake is engaged, it will result in Forward Speed Control (FSC) has two functions: sudden stoppage and possible internal damage to One is to set forward travel speed, and the other the transaxle.
  • Page 27: Seat Panel Latch

    R22x Operating Instructions Seat Panel Latch arm tabs, one for each transaxle, used to engaged and disengaged the lockout feature. More infor- The seat hinges forward for maintenance access mation about this feature is covered in “Transaxle and is latched down in the normal operating posi- Lockout”...
  • Page 28: Pre-Operation Checklist

    ● DO NOT overfill the fuel tank; fill up to the □ bottom of the fill tube. PERFORM REQUIRED SCHEDULED MAIN- TENANCE PROCEDURES See the “R22x Maintenance Schedule Chart” on page 34 for a complete list of periodic mainte- nance.
  • Page 29: Starting The Engine

    FSC lever in position since age the starter motor and shorten battery a friction lock maintains the selected lever life. Consult your Walker dealer or authorized position (and forward travel speed). Rehlko dealer for additional help.
  • Page 30 Operating Instructions R22x NOTE: If the tractor creeps forward or back- ward with the FSC lever in the NEUTRAL- Pull Steering PARK position, the transmission control needs Levers with Left Hand to be adjusted. See “Neutral Function Adjust- ment” on page 60 for details.
  • Page 31: Recommendations For Getting Started

    ● Remember it is not necessary to hold the steering levers forward (a unique Walker Engaging the Blades feature); always PULL on the levers for steering or for reverse motion of the mow- 1.
  • Page 32: Stopping The Machine

    (5) seconds, the brake should be repaired or especially if the transmission is warm from operation. replaced before further operation of the mow- er. Contact your Walker dealer for service. WARNING Remove the key from the ignition switch when leaving the mower unattended. This will pre- vent children and inexperienced operators from starting the engine.
  • Page 33: Adjusting The Cutting Height

    R22x Operating Instructions Adjusting the Cutting Height 2. On each side, push down the deck lock lever to unlock the carrier frame pivot joint. With the lever depressed, push down on the carrier Cutting height is adjusted by positioning the four frame, and then release the deck lock lever.
  • Page 34: Recommendations For Mowing

    Operating Instructions R22x Recommendations for Mowing LH Lock Hole ● Keep the mower deck and discharge shield clean. ● Mow with sharp blades. A dull blade tears the grass (resulting in poor lawn appearance) and uses extra power (slowing the mowing speed).
  • Page 35 R22x Operating Instructions Maximum Discharge Recommended Shield Slope - Do Not Operate on Steep Slopes No Gap in Lowest Position Side Discharge Shield in Lowest Position ● Avoid damage to the grass by slipping and skid ding of the drive tires. Use smooth con- 14 in.
  • Page 36: Transaxle Lockout

    Operating Instructions R22x 5 FT MINIMUM No Driving Zone Transaxle Lockout IMPORTANT: DO NOT TOW this mower faster than 2 mph (3.2 km/h) with the transaxle lockout engaged. Towing can produce excessive internal pressure and damage the transaxle(s). Lockout the transaxles to permit freewheeling and...
  • Page 37: Recommendations For Towing

    R22x Operating Instructions Recommendations for Towing Recommendations for Tilt-up Deck Operation and Transport When equipped with a factory authorized hitch kit, the maximum towing capacity on flat ground is To avoid potential deck and/or tractor damage 250 lbs (113 kg) gross trailer weight. The maxi- while using the tilt-up deck, the following recom- mum tongue weight is 50 lbs (23 kg).
  • Page 38: Maintenance

    Information about each of these tasks is provid- ed in this section, and many of them can be performed by the owner-operator unless otherwise noted. Contact your Walker Dealer if you have questions or need assistance. Each...
  • Page 39: Check Engine Crankcase Oil

    R22x Maintenance Check Engine Crankcase Oil IMPORTANT: DO NOT operate engine with- out a sufficient oil supply in the crankcase. DO NOT operate with the oil level below the Frequency: Each use or after 8 hours of continu- “L” mark or above the “F” mark on the dipstick.
  • Page 40: Check/Clean Engine Air Cooling System

    If there is little or no airflow, the cooling fan and cylinder head cooling fins are clogged. The engine shroud needs to be removed and the air cooling system cleaned. See your authorized Walker Dealer for this service.
  • Page 41: Clean Grass Buildup Under Deck

    R22x Maintenance Clean Grass Buildup Under Deck Inspect/Service Mower Blades Frequency: Each Use Frequency: Each use or after 10 hours of opera- tion DANGER Check mower blade(s) for straightness, sharp- ness, and condition of the cutting edge. Replace Before raising the mower deck for cleaning, blades if worn, bent, cracked, or otherwise dam- stop the engine, and re move the ignition key.
  • Page 42 NOTE: If you are not comfortable performing the following steps, contact your authorized Walker Dealer for assistance. To Sharpen the Blades: A. Remove blades for sharpening by grasp- Blade Balancer ing the end of the blade using a rag or a...
  • Page 43: Check Security Of Air Filtration Components

    R22x Maintenance Check Security of Air Filtration Lubricate Grease Fittings and Oil Components Points Frequency: Each Use Frequency: Every 25 hours or more often in extremely dusty or dirty conditions Inspect the engine air cleaner system to make sure it is securely in place and without damage.
  • Page 44 Maintenance R22x DS54-R DECK Lubrication Points...
  • Page 45: Check Transaxle Fluid Level

    Check Drive Belts (Ground Drive, Blade) Frequency: Every 25 hours Frequency: Every 25 hours There are two belts used for the R22x: the blade Fill Port Plug drive belt and the ground drive belt. They need to Fill oil until it reaches bottom regularly be inspected for wear.
  • Page 46: Check Safety Switch System

    RH hinge and the engine stalls when the blade clutch (PTO) is engine should immediately stop. engaged. Contact your Walker Dealer for troubleshooting and/or service if you experience failure-to-operate conditions such as these.
  • Page 47: Clean/Replace Engine Precleaner Air Filter

    R22x Maintenance Clean/Replace Engine Precleaner 4. Wash precleaner in warm water with deter- Air Filter gent. Rinse and allow to air dry. (Do not wring dry.) Frequency: Every 25 hours or more often in 5. Lightly oil precleaner with new engine oil;...
  • Page 48: Change Engine Crankcase Oil And Filter

    Maintenance R22x 3. Before removing the dipstick, clean the area around the dipstick to keep any dirt or debris Paper out of the en gine. Air Filter 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.
  • Page 49: Clean Engine Cooling System

    8. Install the new oil filter on the engine. Turn removing the engine from the chassis. See your the filter clockwise until the rubber gasket con- authorized Walker Dealer for this service. tacts the sealing surface, then tighten an ad- ditional 3/4 to 1 turn.
  • Page 50: Replace Fuel Filter

    2. Replace the filter using Walker Service Parts (Walker P/N 5020-3), making sure that the arrow on the filter is aligned with the fuel flow through the filter.
  • Page 51: Check Drive Tire Mounting Nuts

    If the brake system malfunctions [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. Oil Filter Guard Oil Filter and Guard Location...
  • Page 52: Replace Spark Plugs And Set Gap

    Replace Spark Plugs and Set Gap 3. After oil drains, wipe off the filter mounting surface and apply a thin coating of clean oil to the gasket on the replacement oil filter (Walker Frequency: Every 500 hours P/N 2026-6). NOTE: If you are not experienced with engine 4.
  • Page 53: Check Fsc Friction Lock

    FSC lever back from the FORWARD position. lines and clamps every two (2) years. If your lines With a proper amount of friction adjusted, the need to be replaced, contact your local Walker FSC lever should move back with a slight Dealer.
  • Page 54: Clean Battery Terminals

    Maintenance R22x Clean Battery Terminals Charge Battery Frequency: Yearly Frequency: Yearly (or as required) The battery comes sealed and is maintenance free, so the electrolyte level will not need to be CAUTION checked or filled. Annually the battery terminals need to be inspected and cleaned.
  • Page 55: Long-Term Storage Preparation

    R22x Maintenance Long-Term Storage Preparation Engine Preparation for Storage If the mower is to be stored for more than two Frequency: For storage of longer than two (2) (2) months, complete the following procedure to months prepare the engine. At the end of the mowing season, the mower...
  • Page 56: Service And Adjustments

    The information covered in this section can be performed by qualified owner/operators or by a Authorized Walker Dealer. There are two (2) belts on the R22x: the blade drive belt (PTO) and the ground drive belt. If DANGER either belt shows wear or damage during a regular inspection, the belt should be replaced.
  • Page 57: Replacing The Blade Drive Belt (Pto)

    2. Raise the footrest. Remove the four (4) wing nuts on the deck belt cover and slide the 6. Slide a new belt [Walker P/N 1731-1 (42"), cover out. 1731 (48"), or 1731-2 (54")] under the tractor, and route it through the middle sets of idler 3.
  • Page 58 Service R22x NOTE: The Belt Routing decal located under 10. Check and adjust the effective belt length. the seat panel shows correct belt placement. With the drive belt in place, check the position of the front idler on the tensioning arm. The top of the idler should be even with to 1/2"...
  • Page 59: Replacing The Ground Drive Belt

    R22x Service For a 54" deck: The RH and LH fixed idlers 1. With the engine off and the key removed from can be moved forward (one or both) to effec- the ignition, lift the seat panel. Unlock and lift tively shorten the belt.
  • Page 60 Service R22x For a 54" deck: Pull back on the RH V- groove idler to rotate the deck idler arm and Clutch Wire - reduce tension. Once the belt is broken-in, Brown to Green Connector you should be able to rotate this by hand, but a wrench is helpful for newer belts.
  • Page 61 Ground Drive Belt Between Transaxle Fan Blades 10. Slide in the replacement ground drive belt (Walker P/N 1250-4), and position the belt on clutch pulley. NOTE: The Belt Routing decal located under the seat panel shows correct belt placement.
  • Page 62: Deck Leveling

    Service R22x Deck Leveling 3. Check the side-to-side level. Rotate each blade sideways and measure the distance from blade tip to ground on each side. If mea- The mower deck and support frame are jig weld- surements vary more than 1/8 in. (3 mm), add ed;...
  • Page 63: Steering Handle Adjustment

    R22x Service Steering Handle Adjustment Forward Speed Control Friction Adjustment An adjustment range of approximately 3 in. (76 mm) is available on the steering handles which allows the han dles to be adjusted forward or aft depending on the arm length of the operator. The...
  • Page 64: Neutral Function Adjustment

    Service R22x Neutral Function Adjustment WARNING 1. Securely block up tractor so the drive tires The following adjustments are made with the engine running. Keep all body parts and tools are a couple inches off the ground. The deck should remain attached.
  • Page 65: Straight Tracking Adjustment

    R22x Service Straight Tracking Adjustment tracking adjustment nut counterclockwise until straight tracking and neutral are both achieved. 1. Sit in the seat, start the engine, and set the throttle at full speed. With the FSC in the IMPORTANT: After tracking adjustments are...
  • Page 66: Appendix: Assembly Instructions

    1. If necessary, install the drive tires using the The following steps need to be performed to pre- eight (8) mounting nuts supplied. Torque nuts pare the R22x for initial use after shipment from to 75 to 85 lb·ft (102 to 115 N·m). the factory.
  • Page 67: Add Fuel

    The engine must be off during the tractor an electrical short. assembly and deck installation. (+) Battery Cable (-) Battery Cable The following steps prepare the deck for the R22x Connection Connection for initial use after shipment from the factory. Deck Caster Wheel Installation 1.
  • Page 68: Tilt-Up Roller Wheel Installation

    Mount the two (2) tilt-up roller wheels on the brackets on the rear skirt of the deck housing us- CAUTION ing the axle bolt (Walker P/N 8490), 3/8 in. plain washer, 3/8 in. wave spring washer (between The engine must be off during the tractor bracket and wheel) and 3/8-16 Whiz locknut.
  • Page 69 Assembly Instructions for the R22x 3. Lift the deck belt access panel to verify the belt placement. The belts should run flat be- tween the pulleys. Lift panel to verify belt placement Install Carriage Bolt 6. Push down the deck lock lever, lift up the car-...
  • Page 70 Assembly Instructions for the R22x 9. Raise the footrest. 10. Remove the four (4) wing nuts on the deck belt cover and slide the cover out. 11. For a 42", 48" deck: Remove the belt from the LH spindle pulley.
  • Page 71 Assembly Instructions for the R22x 16. Check and adjust the effective belt length. 1/4 Twist With the drive belt in place, check the position of the front idler on the tensioning arm. The top of the idler should be even with to 1/2"...
  • Page 72 Assembly Instructions for the R22x For a 54" deck: The RH and LH fixed idlers can be moved forward (one or both) to effec- tively shorten the belt. They come mounted in the rear holes from the factory. RH Fixed...
  • Page 73 MAINTENANCE AND SERVICE RECORD SHEET DATE SERVICE ENGINE ITEM HOURS ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________...
  • Page 74 MAINTENANCE AND SERVICE RECORD SHEET DATE SERVICE ENGINE ITEM HOURS ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________ ______________________________________________________________________________________________________________...
  • Page 75 (2) years after 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 76 WALKER MFG. CO. • 5925 E. HARMONY ROAD, FORT COLLINS, CO 80528 • (970) 221-5614 FORM NO. 071725 PRINTED IN USA www.walker.com ©2025 WALKER MFG. CO...

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