Husqvarna W21 Operator's Manual
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Husqvarna W21 Operator's Manual

21" push mower
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Operator´s manual
W21
W53
Please read these instructions carefully and make sure
English
you understand them before using the machine.

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Summary of Contents for Husqvarna W21

  • Page 1 Operator´s manual Please read these instructions carefully and make sure English you understand them before using the machine.

  • Page 3: Table Of Contents

    OPERATOR’S MANUAL 21" PUSH MOWER Contents Contents..............1 Maintenance ............30 Introduction ............3 Maintenance Schedule ........30 Congratulations ..........3 Ignition System ..........31 General ............3 Checking the Engine's Cooling Air Intake..32 Driving and Transport on Public Roads ..3 Checking and Adjusting the Throttle & Towing.............3 Choke Cable ..........33 Operating ............3...
  • Page 4 WARNING! Failure to follow cautious operating practices can result in serious injury to the operator or other persons. The owner must understand these instructions, and must allow only trained persons who understand these instructions to operate the mower. Each person operating the mower must be of sound mind and body and must not be under the influence of any mind altering substance.

  • Page 5: Introduction

    INTRODUCTION Introduction Congratulations Thank you for purchasing a Husqvarna Pro Push Mower. This machine is built for high performance and rapid mowing. This manual is a valuable document. Following the instructions (use, service, maintenance, etc.) can considerably increase the lifespan of your machine and even increase its resale value.

  • Page 6: Good Service

    INTRODUCTION Good Service Husqvarna’s products are sold all over the world and only in specialized retail stores with complete service. This ensures that you as a customer receive only the best support and service. Before the product is delivered, the machine has, for example, been inspected and adjusted by your retailer, see the certificate in the Service Journal in this operator’s manual.

  • Page 7: Symbols And Decals

    SYMBOLS AND DECALS Symbols and Decals These symbols are found on the machine and in the operator’s manual. Study them carefully so that you know what they mean. WARNING! Xxxxxxx xxxx xxxxxxxx xxx x Xxxxx xxxxxx xx. xx xxxxxxxx xxxxx xxx xx. Used in this publication to notify the reader of a risk of personal injury, particularly if the reader should neglect to follow instructions given in the manual.
  • Page 8 SYMBOLS AND DECALS Read Shut off engine Keep a safe Whole Severing Do not open & remove spark Operator´s distance from body of fingers or remove Manual. plug wire before the machine. exposure safety & toes. performing any to thrown shields while maintenance or objects.

  • Page 9: Safety Instructions

    SAFETY INSTRUCTIONS Safety Instructions These instructions are for your safety. Read them carefully. WARNING! This symbol means that important safety instructions need to be emphasized. It concerns your safety. General Use • Read all instructions in this operator’s manual and on the machine before starting it.
  • Page 10 SAFETY INSTRUCTIONS • Shut down the blades when not mowing. WARNING! • Be careful when mowing around fixed Engine exhaust and certain objects, so that the blades do not hit vehicle components contain them. Never drive over foreign objects. or emit chemicals considered •...

  • Page 11: Operating On Slopes

    SAFETY INSTRUCTIONS • Shut the engine off and wait until the blade comes to a complete stop before removing grass catcher. • Disengage the self-propelled mechanism or drive clutch on mowers so equipped before starting the engine. • If the equipment should start to vibrate abnormally, stop the engine and check immediately for the cause.

  • Page 12: Children

    SAFETY INSTRUCTIONS • Avoid starting or stopping on a slope. If the tires begin to slip, shut down the blades if so equipped or shut off the engine and move slowly down the slope. Children • Serious accidents may occur if you fail to be on guard for children in the vicinity of the machine.
  • Page 13 SAFETY INSTRUCTIONS • Allow the engine to cool before refueling. WARNING! Do not smoke. Do not fill fuel in the vicinity of sparks or open flames. The engine and the exhaust system, become hot during • If leaks arise in the fuel system, the operation.

  • Page 14: Transport

    (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. A spark arrester for the muffler is available through your authorized Husqvarna dealer. -English...

  • Page 15: Controls

    CONTROLS Controls This operator’s manual describes the Husqvarna Pro Push Mower. The mower is fitted with a Kawasaki engine. 8011-040 Pro Push Mower Control Locations 1, 4, 5 8019-052 Locations of the controls Page Page Engine speed BBC control Fuel shut off valve...

  • Page 16: Engine Speed

    CONTROLS Engine Speed CAUTION: The engine speed was set at the factory for Federal regulations require an optimum performance. Speed is not engine control to be installed adjustable on this lawn mower in order to minimize the risk of blade Operator Presence Control (OPC) contact injury.

  • Page 17: Choke Control

    CONTROLS WARNING! Gasoline is highly flammable. Observe caution and fill the tank outdoors (see the safety rules). IMPORTANT INFORMATION Experience indicates that alcohol blended fuels (called gasohol, ethanol or methanol) can attract moisture which WARNING! leads to separation and formation of Fill to bottom of filler neck.

  • Page 18: Blade Brake Control (Bbc)

    CONTROLS Blade Brake Control (BBC) Models: W21SBK, W53SBEK The Blade Brake Control (BBC) engages the blade drive. The Operator Presence Control (OPC) must be engaged and the engine running to engage the BBC. Illustration shows ground speed bail engaged to operate in transport mode. release ground speed bail to prevent movement.

  • Page 19: Cutting Height

    CONTROLS Cutting height The cutting deck height is obtained by raising the wheels for low cut and lower wheels for high cut, adjust cutting height to suit your requirements. Medium position is best for most lawns. To change your cutting height, squeeze adjuster lever toward wheel.

  • Page 20: Engine Shut Off

    CONTROLS Shut Off Engine Models: W21SBK, W53SBEK To stop engine, release OPC bail to stop blades. Pull back on throttle control to stop engine Stop Engine 8019-047 1. OPC bail 2. Throttle control Models: W21SK, W53SEK Pull throttle control back to slow speed. Release OPC bail to stop engine.

  • Page 21: Discharge

    CONTROLS To Convert Mower Your lawn mower was shipped as a rear discharge mower. To convert to bagging or side discharge: REAR BAGGING • Lift rear door of the lawn mower and place the grass catcher frame hooks onto the door pivot pins •...

  • Page 22: Operation

    OPERATION Before Starting Engine ADD OIL CAUTION: DO NOT overfill engine with oil, Your lawn mower is shipped without oil in the or it will smoke on startup. engine. For type and grade of oil to use see "ENGINE" in the Maintenance section of this manual or the engine manual.

  • Page 23: To Start Engine

    OPERATION TO START ENGINE NOTE: Due to protective coatings on the engine, a small amount of smoke may be present during the initial use of the product and should be considered normal. To start a cold engine, push the throttle control lever to the choke position.

  • Page 24: Mowing Bbc

    OPERATION Transmission Selector BBC Self propelled Models Only Models: W53SEK, W53SBEK Mowing Prepare the area before mowing. Look for obstacles, remove foreign objects and clear the work area of pets and bystanders. Check the equipment for fuel, oil, loose fasteners etc.
  • Page 25 OPERATION Set throttle control to high speed. Engage Operator Presence Control (OPC). 8019-020 Set Throttle to High Speed Engage Blade Brake Control (BBC). 8019-021 Engage OPC then BBC Engage Ground Speed Bail to begin mowing. TIP: To extend clutch life do not engage BBC and start blade while in tall grass.
  • Page 26 OPERATION When finished mowing release OPC bail to stop blade rotation. Release Ground Speed Bail to stop wheel rotation. 8019-023 Release OPC bail 1. OPC bail 2. Ground speed bail Pull throttle control all the way rearward to stop engine. 8019-024 1.

  • Page 27: Mowing Self Propelled

    OPERATION Self Propelled Models Only Models: W21SK, W53SEK Mowing Prepare the area before mowing. Look for obstacles, remove foreign objects and clear the work area of pets and bystanders. Check the equipment for fuel, oil, loose fasteners etc. Make sure the equipment is in top shape. Correct any defects before using the mower.
  • Page 28 OPERATION Set throttle control to high speed. 8019-028 Set throttle to high speed Engage Ground Speed Bail to begin mowing. 8019-029 Engage Ground Speed Bail Release Ground Speed Control to stop. When finished mowing release OPC bail to stop blade rotation and stop engine. 8019-023 -English...

  • Page 29: Mowing Push

    OPERATION Push Models Only Model: W21K Prepare the area before mowing. Look for obstacles, remove foreign objects and clear the work area of pets and bystanders. Check the equipment for fuel, oil, loose fasteners etc. Make sure the equipment is in top shape. Correct any defects before using the mower.

  • Page 30: Mowing Tips

    OPERATION Mowing Tips Under certain conditions, such as very tall grass, it may be necessary to raise the height WARNING! of cut to reduce pushing effort and to keep DO NOT use de-thatcher blade from overloading the engine and leaving attachments on your mower.

  • Page 31: Mulch Mowing Tips

    OPERATION Mulching Mowing Tips • The special mulching blade will recut the IMPORTANT INFORMATION grass clippings many times and reduce For best performance, keep mower them in size so that as they fall onto the housing free of built-up grass and trash. lawn they will disperse into the grass and See "Cleaning"...

  • Page 32: Maintenance

    MAINTENANCE Maintenance Maintenance Schedule The following is a list of maintenance procedures that must be performed on the machine. For those points not described in this manual, visit an authorized service workshop. An annual service carried out by an authorized service workshop is recommended to maintain your machine in the best possible condition and to ensure safe operation.

  • Page 33: Ignition System

    MAINTENANCE General Recommendations The warranty on this lawn mower does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain mower as instructed in this manual. Some adjustments will need to be made periodically to properly maintain your unit.

  • Page 34: Checking The Engine's Cooling Air Intake

    MAINTENANCE Checking the Engine's Cooling Air Intake Check that the engine’s cooling air intake is free from leaves, grass, and dirt. If the cooling air intake is clogged, engine cooling deteriorates, which can lead to engine damage. 8011-719 Check and clean the cooling air intake -English...

  • Page 35: Checking And Adjusting The Throttle

    MAINTENANCE Checking and Adjusting the Throttle Cable and Choke Cable Check that the engine responds to throttle increases and that a good engine speed is attained at full throttle. If doubts arise, contact the service workshop. If adjustments are necessary, they can be made as follows: Position the throttle/choke control lever at the handle to the “Choke”...

  • Page 36: Replacing The Air Filter

    MAINTENANCE Replacing Air Filter Kawasaki Engine If the engine seems weak or runs unevenly, the air filter may be clogged. If run with a dirty air filter, the spark plugs can become fouled, distrupting operation. For this reason, it is important to replace the air filter regularly (see the heading Maintenance Schedule for the proper service interval).

  • Page 37: Replacing The Fuel Filter

    MAINTENANCE Replacing the Fuel Filter Replace the line-mounted fuel filter every 100 hours (once per season) or more regularly if it is clogged. Replace the filter as follows: Move the hose clamps away from the filter. Use flat-nosed pliers. Pull the filter loose from the hose ends. Push the new filter into the hose ends.

  • Page 38: Checking The V-Belts

    MAINTENANCE Checking the V-belts Check every 100 hours of operation. Check for severe cracking and large nicks. NOTE: The belt will show some small cracks in normal operation. The belts are not adjustable. Replace belts if they begin to slip from wear. Checking the Blade In order to attain the best mowing effect, it is important that the blade is well sharpened...

  • Page 39: Replacing Blade

    Install and tighten blade bolt securely. Torque blade bolt to 45-55 ft/lbs (60-75 Nm). IMPORTANT INFORMATION Special blade bolt is heat treated. Replace with Husqvarna bolt if required. Do not use lower grade hardware than specified. Gear Case • To keep our drive system working...

  • Page 40: Grass Catcher

    MAINTENANCE Grass Catcher • The grass catcher may be hosed with water, but must be dry when used. WARNING! • Check your grass catcher often for damage or deterioration. Through Disconnect spark plug wire from normal use it will wear. If catcher needs spark plug and place wire where replacing, replace only with approved it cannot come in contact with...

  • Page 41: Adjusting Lawn Mower

    MAINTENANCE Adjusting the Lawn Mower WARNING! Before performing any service or adjustment: 1. Release control bar and stop engine. 2. Make sure the blade and all moving parts have completely stopped. 3. Disconnect spark plug wire from spark plug and place where it cannot come in contact with plug Adjusting Cutting Height See “TO ADJUST CUTTING HEIGHT”...

  • Page 42: Engine Adjustment

    MAINTENANCE Engine Adjustment Engine Speed Your engine speed has been factory set. Do not attempt to increase engine speed or it may result in personal injury. If you believe that the engine is running too fast or too slow, take your lawn mower to an authorized service center for repair and adjustment.

  • Page 43: Lubrication

    LUBRICATION Lubrication Keep unit well lubricated (See “LUBRICATION CHART”). IMPORTANT: DO NOT OIL OR GREASE PLASTIC WHEEL BEARINGS. VISCOUS LUBRICANTS WILL ATTRACT DUST AND DIRT THAT WILL SHORTEN THE LIFE OF THE SELF-LUBRICATING BEARINGS. IF YOU FEEL THEY MUST BE LUBRICATED, USE ONLY A DRY, POWDERED GRAPHITE TYPE LUBRICANT SPARINGLY.
  • Page 44 LUBRICATION Change the oil after every 25 hours of operation or at least once a year if the lawn mower is not used for 25 hours in one year. WARNING! Engine oil can be very hot if it is Check the crankcase oil level before starting drained directly after stopping the engine and after each five (5) hours of the engine.
  • Page 45 LUBRICATION 6. Changing the Oil Filter Drain the engine oil in accordance with the work description under the heading Engine Oil/Change Engine Oil. Remove the oil filter. If necessary, use a filter remover. Wipe new, clean engine oil onto the seal for the new filter.

  • Page 46: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE Trouble Shooting Guide Problem Cause The engine will not start. • Dirty air filter. • Out of fuel. • Stale fuel. • Water in fuel. • Spark plug wire is disconnected. • Bad spark plug. • Loose blade or broken blade adapter. •...
  • Page 47 TROUBLE SHOOTING GUIDE Grass catcher not filling (if so equipped) • Cutting height too low. • Lift on blade worn off. l• Catcher not venting air. Hard to push • Grass is too high or wheel height is too low. •...

  • Page 48: Storage

    Use purchase year, model, type, and serial number. a degreaser and warm water Always use genuine Husqvarna spare parts. instead. An annual check-up at an authorized service workshop is a good way to ensure that your machine performs its best the following season.

  • Page 49: Technical Data

    TECHNICAL DATA Technical Data W21K/968999283 W21SK/968999284 Engine Manufacturer Kawasaki Type FJ180V-A5S21-R Power 6 HP/4.5 kW Lubrication Pressure, with filter Oil capacity excl filter 0.69 qt. (0.65L) Oil capacity incl filter 0.90 qt. (0.85L) Engine oil, Synthetic API: SF, SE, SH OR SJ Engine oil, Mineral, Class Fuel Gasoline...
  • Page 50 TECHNICAL DATA Technical Data W21SBK/968999286 W53SBEK/968999287 Engine Manufacturer Kawasaki Type FJ180V-AS22-R FJ180V-AS63-R Power 6.0 HP (4.5 kW) Lubrication Pressurized, with filter Oil capacity excl filter 0.69 qt. (0.65L) Oil capacity incl filter 0.90 qt. (0.85L) Engine oil, Syntetic API Class SH OR SJ Engine oil, Mineral, Class 10W-30 Fuel...
  • Page 51 TECHNICAL DATA Technical Data W53SEK/968999289 Engine Manufacturer Kawasaki Type FJ180V-AS62-R Power 6.0 HP (4.5 kW) Lubrication Pressurized, with filter Oil capacity excl filter 0.69 qt. (0.65L) Oil capacity incl filter 0.90 qt. (0.85L) Engine oil, Syntetic API Class SH OR SJ Engine oil, Mineral, Class 10W-30 Fuel...
  • Page 52 TECHNICAL DATA When this product is worn out and no longer used, it shall be returned to the reseller or other party for recycling. In order to implement improvements, specifications and designs can be altered without prior notification. Note that no legal demands can be placed based on the information contained in these instructions.

  • Page 53: Torque Specifications

    TECHNICAL DATA TORQUE SPECIFICATIONS HEX HEAD CAP SCREWS The to rque values sho wn sho uld be used as a general guideline when specific to rque values are no t given. U.S. Standard Hardw are Flangelock Screw Grade SAE grade 5 SAE grade 8 w/ Flangelock Nut ft./lbs...

  • Page 54: Conformity Certificates

    Only applicable to European versions Husqvarna AB, Beatrice NE USA declares under sole responsibility that the machine types stated on page 1 of this manual, from 2005's serial numbers and onwards (the year is clearly stated in plain text on the...

  • Page 55: Service Journal

    SERVICE JOURNAL Service Journal Action Date, mtr reading, stamp, sign Delivery Service 1. Check that the right amount of oil is in the engine. 2. Fill with fuel and open the fuel shut off valve ( if so equipped). 3. Start the engine. 4.

  • Page 56: After The First 5-8 Hours

    SERVICE JOURNAL After the First 5-8 Hours 1. Change engine oil. Englishh...

  • Page 57: 25-Hour Service

    SERVICE JOURNAL Action Date, mtr reading, stamp, sign 25-Hour Service 1. Check the fuel pump’s air filter. 2. Sharpen/Replace mower blades if required. 3. Check spark plug wire. 4. Lubricate according to lubrication chart. 5. Check/clean the engine’s cooling air intake. 6.

  • Page 58: 50-Hour Service

    SERVICE JOURNAL Action Date, mtr reading, stamp, sign 50-Hour Service 1. Perform the 25-hour service. 2. Clean/replace the air cleaner’s filter cartridge (paper filter) (shorter intervals for dusty operating conditions). Change engine oil. 4. Lubricate according to lubrication chart. Englishh...

  • Page 59: 100-Hour Service

    SERVICE JOURNAL Action Date, mtr reading, stamp, sign 100-Hour Service 1. Perform the 25-hour service. 2. Perform the 50-hour service. 3. Change the engine oil filter. 4. Clean/replace the spark plugs. 5. Replace the fuel filter. 6. Clean the cooling fins on the engine. Check V-belts.

  • Page 60: 300-Hour Service

    SERVICE JOURNAL Action Date, mtr reading, stamp, sign 300-Hour Service 1. Inspect the machine. Come to agreement with the customer as to which additional work is to be carried out. 2. Perform the 25-hour service. 3. Perform the 50-hour service. 4.

  • Page 61: At Least Once Each Year

    SERVICE JOURNAL Action Date, mtr reading, stamp, sign At Least Once Each Year 1. Clean the engine’s cooling air intake (25 hours). 2. Replace the air cleaner’s pre-filter (foam) (300 hours). 3. Replace the air filter’s paper cartridge. 4. Change the engine oil (50 hours). 5.
  • Page 62 SERVICE JOURNAL Action Date, mtr reading, stamp, sign Englishh ´®z+RPT¶6{¨ ´®z+RPT¶6{¨...
  • Page 63 SERVICE JOURNAL Action Date, mtr reading, stamp, sign English-...
  • Page 64 115 04 85-26 ´®z+RPT¶6{¨ ´®z+RPT¶6{¨ 2007-02-23...

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