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Husqvarna W21K, W21SK, W21SBK, W53SBEK, W53SEK, W21KC, W21SKC, W21SBKC Operator's Manual

21" push mower
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Operator's Manual
968999283 / W21K, 968999284 / W21SK,
968999286 / W21SBK, 968999287 / W53SBEK
968999289 / W53SEK, 968999638 / W21KC
968999639 / W21SKC, 968999640 / W21SBKC
English
Please read the operator's manual carefully and make sure you
understand the instructions before using the machine.

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  Related Manuals for Husqvarna W21K, W21SK, W21SBK, W53SBEK, W53SEK, W21KC, W21SKC, W21SBKC

  Summary of Contents for Husqvarna W21K, W21SK, W21SBK, W53SBEK, W53SEK, W21KC, W21SKC, W21SBKC

  • Page 1 Operator's Manual 968999283 / W21K, 968999284 / W21SK, 968999286 / W21SBK, 968999287 / W53SBEK 968999289 / W53SEK, 968999638 / W21KC 968999639 / W21SKC, 968999640 / W21SBKC English Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
  • Page 2: Table Of Contents

    Blade replacement: ... 37 Gear Case ... 37 Grass Catcher ... 38 Muffler ... 38 Cleaning ... 38 Adjusting the Lawn Mower ... 39 Engine Adjustment ... 40 Cleaning and Washing ... 40 Hardware ... 40 Lubrication ... 41 Mower Lubrication Chart ... 41 Engine Lubrication ...
  • Page 3: Introduction

    INTRODUCTION 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 4: General

    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 5: Good Service

    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 6: 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 7 SYMBOLS AND DECALS Shut off engine and Read remove spark plug Operator´s wire before Manual. performing any maintenance or repair work. Moving sharp blades under cover can sever fingers. English- Whole Severing Do not open or body of fingers remove safety exposure and toes.
  • Page 8: Safety Instructions

    SAFETY INSTRUCTIONS Safety Instructions These instructions are for your safety. Read them carefully. This cutting machine is capable of amputating hands and feet and throwing objects. Failure to observe the following safety instructions could result in serious injury or death. WARNING! This symbol means that important safety instructions need to be emphasized.
  • Page 9 SAFETY INSTRUCTIONS • Do not put hands or feet near or under rotating parts. Keep clear of the discharge opening at all times • Do not pull mower backwards unless absolutely necessary. Always look down and behind you before and while moving backwards.
  • Page 10: Operating On Slopes

    SAFETY INSTRUCTIONS • Always wear gloves when handling the blades. • Never wear loose clothing that can get caught in moving parts. • Use ear protectors to avoid damage to hearing. • Stop the blade when crossing gravel drives, walks, or roads. •...
  • Page 11: Children

    SAFETY INSTRUCTIONS • Do not drive the mower on terrain that slopes more than 10°. • Do not mow near verges, ditches, or banks. The operator could lose footing or balance. • Do not mow wet grass. Reduced footing could cause slipping •...
  • Page 12 SAFETY INSTRUCTIONS • Keep the nozzle in contact with the rim of the fuel tank or container opening at all times until fueling is complete. Do not use a nozzle lock-open device. • Never fill containers inside a vehicle or on a truck or trailer bed with a plastic liner.
  • Page 13: Transport

    SAFETY INSTRUCTIONS • Never make adjustments with the engine running. • Ensure that nuts and bolts, especially the fastening bolts for the blade attachments, are properly tightened, torqued and that the equipment is in good condition. • Do not modify safety equipment. Check regularly to be sure it works properly.
  • Page 14: Customer Responsibilities

    (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 This operator’s manual describes the Husqvarna Pro Push Mower. The mower is fitted with a Kawasaki engine. Control Locations Locations of the controls Engine speed Fuel shut off valve Fuel tank cap Operator presence control (OPC) Choke control Throttle control...
  • Page 16: Controls

    Operator Presence Control (OPC) Models: W21SBK, W53SBEK, W21SBKC Your lawn mower is equipped with an operator presence control (OPC). The engine will start whether the OPC is engaged or not. The blade will not operate unless the OPC is engaged.
  • Page 17: Choke Control (All Models)

    WARNING! Gasoline is highly flammable. Observe caution and fill the tank outdoors (see the safety rules). WARNING! Fill to bottom of filler neck. Do not overfill. Wipe off any spilled oil or fuel. Do not store, spill or use gasoline near an open flame.
  • Page 18: Blade Brake Control (Bbc)

    Blade Brake Control (BBC) Models: W21SBK, W53SBEK, W21SBKC 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

    Cutting height The cutting deck height is obtained by raising the wheels for low cut and lowering 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 Shut Off Engine Models: W21SBK, W53SBEK, W21SBKC To stop engine, release OPC bail to stop blades. Pull back on throttle control to stop engine Models: W21SK, W53SEK, W21SKC Pull throttle control back to slow speed. Release OPC bail to stop engine. Model: W21K, W21KC Pull throttle control back to slow speed.
  • Page 21: 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. • To convert to mulching or discharging operation, remove grass catcher and close rear door.
  • Page 22 CONTROLS English-...
  • Page 23: Before Starting Engine

    Before Starting Engine ADD OIL Your lawn mower is shipped without oil in the engine. For type and grade of oil to use see “ENGINE” in the Maintenance section of this manual or the engine manual. Be sure lawnmower is level.
  • Page 24 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. Models: W21SBK &...
  • Page 25: Transmission Selector

    Transmission Selector BBC Self propelled Models Only Models: W21SBK, W53SBEK, W21SBKC 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 26 Set throttle control to high speed. Engage Operator Presence Control (OPC). Engage Blade Brake Control (BBC). Engage Ground Speed Bail to begin mowing. TIP: To extend clutch life do not engage BBC and start blade while in tall grass. Start the blade in short cut grass or over a hard level surface.
  • Page 27 When finished mowing, release OPC bail to stop blade rotation. Release Ground Speed Bail to stop wheel rotation. Pull throttle control all the way rearward to stop engine. OPERATION Release OPC bail 1. OPC bail 2. Ground speed bail 1. Ground speed bail 2.
  • Page 28: Self Propelled Models Only

    Self Propelled Models Only Models: W21SK, W53SEK, W21SKC 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 29 Set throttle control to high speed. Engage Ground Speed Bail to begin mowing. Release Ground Speed Control to stop. When finished mowing release OPC bail to stop blade rotation and stop engine. OPERATION Set throttle to high speed Engage Ground Speed Bail 8019-028 8019-029 8019-023...
  • Page 30: Push Models Only

    Push Models Only Model: W21K, W21KC 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 31: Mowing Tips

    It may also be necessary to reduce ground speed and/or run the lawn mower over the area a second time. • For extremely heavy cutting, reduce the width of cut by overlapping previously cut path and mow slowly.
  • Page 32: Mulching Tips

    • For best results, adjust the lawn mower cutting height so that the lawn mower cuts off only the top one-third of the grass blades. If the lawn is overgrown it...
  • Page 33: Maintenance

    Read Safety Instructions section “Maintenance”. Maintenance Check for Loose Features Clean/Inspect Grass Catcher* Check Tires Check Drive Wheels** Clean Lawn Mower*** Clean under Drive Cover** Check Drive Belt / Pulleys** Check/Sharpen/Replace Blade Lubrication Check Engine Oil Level Change Engine Oil...
  • Page 34: Before Each Use

    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 35: Engine's Cooling Air Intake

    using a spark plug wrench so that the washer is compressed. A used spark plug should be turned 1/8 of a turn from the seated position. A new spark plug should be turned 1/4 a turn from the seated position. Replace the ignition cable.
  • Page 36: Throttle Cable And Choke Cable

    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 to full throttle (not the “Choke”) position.
  • Page 37: Replacing Air Filter

    Replacing Air Filter 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, disturbing operation. For this reason, it is important to replace the air filter regularly (see the heading Maintenance Schedule for the proper service interval).
  • Page 38: Replacing The Fuel Filter

    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 39: Checking The V-Belts

    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 40: Blade Replacement

    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 41: Grass Catcher

    KEEP MOWER HOUSING FREE OF BUILT- UP GRASS AND TRASH. CLEAN THE UNDERSIDE OF YOUR MOWER AFTER EACH USE. • Clean the underside of your lawn mower by scraping to remove build-up of grass and trash. • Clean engine often to keep trash from accumulating.
  • Page 42: Adjusting The Lawn Mower

    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...
  • Page 43: Engine Adjustment

    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. Carburetor Your carburetor is not adjustable.
  • Page 44 MAINTENANCE English-...
  • Page 45: 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 46 Remove engine oil cap; lay aside on clean surface. Tip lawn mower on its side as shown and drain oil into a suitable container. Rock lawn mower back and forth to remove any oil trapped inside of engine.
  • Page 47 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 48: Trouble Shooting Guide

    Control bar in released position. • Control bar defective. • Fuel valve lever (if equipped) in OFF position. • Rear of lawn mower housing or cutting blade dragging in heavy grass. • Cutting too much grass. • Dirty air filter.
  • Page 49 • Catcher not venting air. • Grass is too high or wheel height is too low. • Rear of lawn mower housing or cutting blade dragging in heavy grass. • Grass catcher too full. • Handle height position not right for you.
  • Page 50 112280 R2 03/06/07...