Operator´s manual DT22 Please read these instructions carefully and make sure you understand them before using the machine.
TABLE OF CONTENTS Operating Instructions for Lawn Dethatcher DT22 with supplement for accessories Introduction .................................................. 2 Congratulations .........................................2 Use ............................................................2 Insure your machine ..................................2 Good service .............................................2 Serial number ............................................2 Symbols and decals.............................
INTRODUCTION Congratulations Thank you for purchasing a Husqvarna lawn care product. Through your confidence in us, you have chosen an exceptionally high quality product. This manual is a valuable document. It describes your new Husqvarna machine. Read the manual carefully before attempting to use the machine. Following the instructions (use, service, maintenance, etc.) can considerably increase the lifespan of your machine and even increase its resale value. Please contact your dealer for more information.
SYMBOLS AND DECALS IMPORTANT INFORMATION WARNING! Xxxx xxx xxxx xx xxxx x xxxx. Xxxx xxx xxxx xx xxxx x xxxx. 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. Used in this publication to notify the reader of a risk of material damage, particularly if the reader should neglect to follow instructions given in the manual. Used also when there is a potential for misuse or misassembly.
SYMBOLS AND DECALS Location of decals 8 1 DT03 2 5 7 9 DT22RF 10 6 DT02 3 6 4 1. Husqvarna logo 6. DANGER Watch your feet 2. Model designation DT22 7. Seed application chart 3. Caution list 8. Warning for carbon monoxide 4. Height adjust 9. Open/Close 5. Seed Dial 10.
SYMBOLS AND DECALS Translation of instructions Decal 7 Decal 8 Seed application chart Warning Values are approximate; quantities of seed depend on the speed at which the machine is run. Faster running speed results in sparser sowing. shorter than normal. Engine exhaust, some of its constituents and certain vehicle components contain or emit chemicals considered by the State of California to cause cancer, birth defects or other reproductive harm.
SAFETY INSTRUCTIONS General use The object of this manual is to help you use your Husqvarna machine more safely and to give you information about how to maintain your machine. Please read the manual carefully before attempting to use the machine. If after reading the operator’s manual you are still unsure about the safety risks associated with use of the machine, you should not use the machine. Please contact your dealer for more information. These safety instructions only address the basics for safe use.
SAFETY INSTRUCTIONS • 8 Husqvarna original spare parts are designed and specified to maintain high quality and correct fit for optimal durability and lifespan. From a safety point of view, you should only use Husqvarna original spare parts. • Check that all safety decals are in place. See the chapter ”Symbols and decals”. • Learn how to use the machine and its controls safely and learn to recognize the safety decals. • Only use the machine for sowing and dethatching lawns.
SAFETY INSTRUCTIONS Preparations • Make sure that you always have first aid equipment at hand when using the machine. • Make sure nobody else is in the vicinity of the machine when you start the engine, engage the drive or run the machine. • Make sure animals and people maintain a safe distance from the machine. • Clear the area of objects such as stones, toys, steel wire, etc. that could become caught in moving machine parts and thrown out.
SAFETY INSTRUCTIONS Running • Do not use the machine on grades of more than 20°. We recommend working across slopes rather than up and down. This will yield a more even result. Do not leave the machine standing on a slope unattended. • Do not use the machine if you are tired, if you have consumed alcohol, or if you are taking other drugs or medication that can affect your vision, judgment or coordination. • Never use the machine indoors or in spaces lacking proper ventilation.
SAFETY INSTRUCTIONS Movement/Transport • To turn and steer the machine, press down on the handle and turn on the back wheels. • Turn off the engine and allow it to cool at least 2 minutes before transport. • Collapse the handle if the machine is equipped with a collapsible handle. • Be careful and use safe lifting and moving techniques when loading/unloading the machine. • We recommend having two people to lift the machine. • 8011-090 We recommend having two people to lift the machine.
SAFETY INSTRUCTIONS Fuel system WARNING! Gasoline and gasoline fumes are poisonous and extremely flammable. Be especially careful when handling gasoline, as carelessness can result in personal injury or fire. • Only store fuel in containers approved for that purpose. • Never remove the fuel cap and fill the fuel tank when the engine is running. • Always stop the engine when refueling. • Do not smoke when filling the gasoline tank and do not pour gasoline in the vicinity of sparks or open flame.
SAFETY INSTRUCTIONS Maintenance • Never make adjustments with the engine running. • Disengage the drive units, shut off the engine and wait until all moving parts come to a complete stop before making adjustments, performing maintenance or cleaning the machine. • Disconnect the spark plug cable before beginning repair work. • Keep all components in serviceable condition and make sure all nuts, bolts, etc. are tight. Replace worn or damaged decals. • Be careful when checking work tools.
PRESENTATION Presentation Congratulations on your choice of an exceptionally high quality product. This operator’s manual describes the Husqvarna dethatcher. The machine is available in one basic design—DT22. The machine is equipped with a 5.5 hp Honda four-cycle engine. DT03 DT22 can be equipped with a catcher. It is available as an accessory at your Husqvarna dealer.
PRESENTATION Main components and operating instruments 4 1 6 5 2 4 3 1. Engine 4. Knob for collapsible handle 2. Depth knob with depth lock 5. Clutch bail 3. Depth lever 6.
PRESENTATION Engine 8 Exterior engine components and operating instruments 1. Throttle control 2. Starter 7 3. Starter handle 6 4. Fuel valve 5 1 5. Choke 6. Air filter 7. Spark plug 4 8. Muffler 3 2 8011-043 11. Oil dipstick engine 16 12. Oil drainage engine 13. Oil level meter 14. Engine switch 15 15. Fuel tank 16. Fuel filler cap 14 13 12 11 8011-252 Throttle control The lever controls engine speed. The image shows half throttle.
PRESENTATION Starter The starter is of the magnapull type with spring return. To replace the return spring or starter cord, contact an authorized service workshop. Starter handle Misuse of the starter handle can damage the starter. Never twist the starter cord around your hand. Pull out the handle slowly until the gears mesh. Do not pull out the starter cord completely and do not let go of the starter handle when extended.
PRESENTATION Spark plug The engine spark plug is hidden under the ignition cable shoe. When performing service, it is important that the engine cannot start accidentally. For this reason, always remove the ignition cable shoe from the spark plug. To avoid pulling the cable, the cable shoe is equipped with a special handle; see the illustration. Type of spark plug, see chapter ”Technical data”. Service instructions, see chapter ”Maintenance/ Ignition system”.
PRESENTATION Fuel tank Underneath the tank, there is a fuel filter combined with the fuel valve. The tank can be filled with 3.6 liters/0.95 US Gal for the DT22. Fueling Read the safety instructions before fueling. Keep the fuel and fuel tank clean. Avoid filling the machine with dirty fuel. Make sure the fuel cap is properly tightened and the gasket is not damaged, particularly before washing the machine. Use unleaded gasoline with minimum 86 octane rating. Never use gasoline mixed with two-cycle oil.
PRESENTATION Cutting unit Depth lever Use the depth lever to raise and lower the blades between working and transport position. When the lever is up, the blades are in working position. Blades should penetrate the soil to a depth of 1/8" to 1/4" with a maximum penetration of 1/2". Check your seed bag for the manufacture’s recommended depth of application. DT03 Depth knob The knob is used to adjust the cutting depth of the blades. Turning the knob counterclockwise increases the working depth.
PRESENTATION Blade versatility Flail blade Thatch is the dense layer of clippings, roots and stems that forms between the soil and the base of the grass. As thatch builds up, it prevents water, air and fertilizer from being absorbed into the soil. This causes shallow root development leading to vulnerability to drought and frost. Excessive thatch also creates an ideal environment for insects and lawn diseases. Power-raking with flail blades removes this thatch layer and restores your lawn to good health.
OPERATION Starting the engine Check that all daily maintenance as described in the maintenance schedule has been performed. Check that there is sufficient fuel in the tank. Fuel valve Open the fuel valve. Turn the lever all the way to the right. 8011-072 Choke When starting the engine warm, the lever should be in the right position; see the illustration. When starting the engine cold or partially warm, turn the lever completely or partly to the left.
OPERATION Starter handle Misuse of the starter handle can damage the starter. Do not twist the starter cord around your hand. Pull out the handle slowly until the gears mesh. Then give a sharp pull on the starter handle. Do not pull out the starter cord completely and do not let go of the starter handle when extended. 8011-044 Throttle control Adjust the engine speed with the throttle. Moving the lever to the left increases throttle and to the right decreases throttle.
OPERATION Before you start • Mow the lawn 1/2" shorter than normal. • Allow the lawn to dry. Wet conditions can cause extensive damage to healthy grass. FLAIL BLADES OR SPRING TINES: • Flail Blades or Spring Tines: Set blade or tine depth so that the blades or tines just touch on a flat surface such as a sidewalk or driveway. • Delta Blades: Set blades to penetrate the soil to a depth of 1/8" to 1/4" with a maximum penetration of 1/2".
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.
MAINTENANCE Replacing the air filter If the engine seems weak, produces black smoke or runs unevenly, the air filter may be clogged. For this reason, it is important to clean and replace the air filter regularly (see the maintenance schedule for the proper service interval). WARNING! 8011-028 Allow the exhaust system to cool before performing service. Risk for burns. Cleaning/replacement of the air filter is carried out as follows: 1. Undo the wing nut and lift off the air filter cowling. 2.
MAINTENANCE Cleaning the sludge reservoir 1. Close the fuel valve. 8011-036 2 Unscrew the sludge reservoir (2). Make sure not to misplace the o-ring (1). 3. Clean the reservoir and the o-ring in e.g. white spirit and dry carefully. 4. Put the o-ring in place in its track and replace the sludge reservoir. Tighten it moderately to avoid damaging the threads. 5. Turn the fuel valve to ON and check for leaks. If it leaks, replace the o-ring.
MAINTENANCE Ignition system The engine is equipped with an electronic ignition system. Only the spark plug requires maintenance. For recommended spark plug, see chapter ”Technical data”. IMPORTANT INFORMATION Fitting the wrong spark plug type can damage the engine. 1. Remove the ignition cable shoe and clean around the spark plug. 2. Remove the spark plug with a 13/16" (21 mm) spark plug socket wrench. 3. Check the spark plug.
MAINTENANCE Cutting unit Checking the drive belt 1. Allow the engine to cool. 2. Remove the spark plug cable. 3. Remove the belt guard (see illustration) on the left side of the machine. 4. Check that the belt is running in the proper track; the pulleys should guide the belt in a straight line. 5. Check that the belt and pulleys are not oily. If they are, first try to clean them with spirits.
MAINTENANCE Wear/Rotation/Replacing flail blades After you have used your dethatcher for some time, the blades will begin to wear on the striking edge. When this happens, their dethatching performance will diminish. A new combing edge may be obtained by rotating the entire rotor shaft assembly laterally (end to end). This procedure can be repeated until the blades reach their wear limit; see illustration.
MAINTENANCE Replacing worn flail blades 1. Allow the engine to cool. 2. Disconnect the spark plug. 3. Tip the machine forward; see the section ”Two minute rule”. IMPORTANT INFORMATION When tipping the machine forward observe the ”Two minute rule”. 4. Remove and dispose of the spring clips (1) (locking washer type) that hold the blade shaft (2) in place (see the illustration). 8011-027 5. Inspect the blade shafts and replace if bent or worn. 6. Drive the blade shafts out towards the center.
MAINTENANCE Wear/Replacing delta blades Over time and due to wear, the blades will diminish in length. Once the blades have worn down by about 19 mm (3/4"), the overall length of the blade at the longest point of the blade will be about 64 mm (2 1/2"), and it will be necessary to replace the blades. It is possible to replace delta blades without removing the rotor shaft. Remove the delta blade by removing the two screws with nuts holding the blade in place.
MAINTENANCE Two minute rule The machine may be tipped forward to facilitate access for cleaning or service, but no longer than 2 minutes. If the machine is held in this position for too long, the engine can be damaged by gasoline draining into the crankcase. Should this happen, perform an extra oil change on the engine. Remove the spark plug and turn the engine over a few revolutions with the starter handle before starting the engine again.
LUBRICATION Lubrication schedule DT22 8011-281 General Stop the engine and remove the ignition cable before attempting to lubricate the machine. Unless otherwise specified, when lubricating with grease use Husqvarna’s Universal Grease no. 5310038-01 or Husqvarna’s Lubrication Grease UL 21 no. 5310060-74. Wipe away excessive grease after lubrication. It is important to avoid getting lubricant on the belt or the drive surfaces on the belt pulleys. Should this happen, attempt to clean them with spirits.
LUBRICATION 1. Engine oil The engine should be warm (but not hot) when changing the oil. Warm oil flows out faster and leaves a smaller quantity of old oil inside the engine. 1. Place a suitable vessel underneath the oil drainage screw. Remove the oil dipstick (1) and the oil drainage screw (4). Tip: Make a channel using a piece of cardboard to lead the oil directly into the vessel and avoid soiling the machine chassis. 4. Check that the rubber gasket is in position and screw the dipstick back into place.
LUBRICATION 2. Depth knob with depth lock Lubricate the threads regularly with grease to avoid binding or locking. It is particularly important to lubricate the threads after cleaning. DT03 3. Blades Cover the blades with a thin coat of oil to avoid rust. This is particularly important prior to winter storage or if the machine will not be used for a period of longer than 30 days. 4. Depth lever It is important to lubricate all links and joints so that they do not bind. Use 30W engine oil. DT05 5.
TROUBLESHOOTING Symptom Cause Action The engine will not start • User error Fuel valve closed. Open the fuel valve. Choke valve open. engine. Close the choke with cold Engine switch in OFF position. Turn the engine switch to ON. Fuel tank empty. Fill with fuel. Machine stored without observing proper procedure from chapter ”Storage/Winter storage” Clean tank, sludge reservoir and empty carburetor. Fill the tank with fresh fuel. Contamination, water or ice in fuel system.
STORAGE Winter storage At the end of the season, the machine should be readied for storage (or if it will not be in use for longer than 30 days). Fuel allowed to stand for long periods of time (30 days or more) can leave sticky residues that can plug the carburetor and disrupt engine function. Fuel stabilizers are an acceptable option to reducing sticky residues during storage. If alkylate gasoline (Aspen) is used, stabilizers are unnecessary because this fuel is stable.
TECHNICAL DATA Specifications DT22 Engine Honda GX160 Cylinder volume 163 cm3 (9.9 cu in) Power 5.5 hp (4 kW) at 3600 RPM Torque 10.8 Nm at 2500 RPM Spark plug NGK BPR6ES DENSO W20EPR-U Fuel volume 3.6 liters/0.95 US Gal Primary drive One V-belt Dethatching breadth 55.8 cm (22") Clutch control Handle-mounted with automatic safety declutching Clutch mechanism Belt tightener with spring return and idling pulley Seeding breadth 55.
ASSEMBLY INSTRUCTIONS Assembly – delivery service 1. Rotate the handle and tighten it in place. 2. Fill the engine with the manufacturer-recommended oil. See section ”Lubrication/Engine oil”. 3. Test the clutch. Make sure that the clutch expansion spring disengages easily. 4. The engine RPM is preset by the manufacturer. Idle speed is 1250–1400 RPM. Maximum engine speed is 3600 RPM.
BAGGER ASSEMBLY Assembly directions, catcher bag 7. (Part No. 539106667) WARNING! DO NOT use or start the engine until the catcher bag is in place. NOTE: If axle is rusty, remove rust with fine sandpaper. NOTE:Rubber flapper does not have to be removed. 8. 9. WARNING! Machines equipped with a catcher MUST not be used with defective catcher bags or without the catcher bag. They pose a risk of thrown stones, eye injury and inhalation of pollution. Remove rear axle from unit.
BAGGER ASSEMBLY 12. Slide wheel on and apply two (2) retaining rings. (Some units use a cotter pin instead.) PULLEY CABLE NOTE: The teeth on the retaining rings should point away from the wheel. 13. Tighten wheel bearing hardware on both sides. NOTE: If you have not installed the flail reel shaft, do so now. 14. Install rubber flaps between flail blades on the rake shaft. See Figure 3. If this shaft is installed, you DO NOT have to remove the shaft from the unit to install the the rubber flaps.
BAGGER ASSEMBLY EXTENDER EXTENDER SPRING LOWER HANDLE LANYARD UPPER BOLT PIN DT13 FIGURE 6 DT15 FIGURE 8 18. Place door in position and set the hinge bolts. DO NOT tighten the bolts, leave at least 1/16" space. Thread nut on to the bolt. See Figure 20. Attach upper handle to the extenders. 21. Attach upper end of cable to the handle and install cable through clutch bail. Fit clutch bail into the handle. See Figure 9. BOLT NUT DT14 DT16 FIGURE 7 FIGURE 9 19.
BAGGER ASSEMBLY 22. Wire tie the cable to the handle. See Figure10. 25. Fit catcher bag to the bag frame as follows: • Affix the bag’s plastic rails to the frame. • Install the upper portion of the bag between the two struts on the upper portion of the frame and affix the bag to the front edge of the frame. • Press on the snaps, one on each side. See Figure 11. DT17 FIGURE 10 23. Check adjustment of clutch cable. If cable needs adjusting, the adjusting should be done at the lower end with the spring.
BAGGER ASSEMBLY Instructions for the catcher bag WARNING! Machines equipped with a catcher MUST not be used with defective catcher bags or without the catcher bag. They pose a risk of thrown stones, eye injury and inhalation of pollution. Catcher bag Insert the catcher bag into the underside of the handle and open the safety door place bag on the catcher chute. DT02 See ”Assembly instructions\Assembly directions, collector bag”.
SEEDER ASSEMBLY WARNING! DO NOT use or start the engine until the seeder is in place. 1. Remove rear cover, it is not used with the seeder attachment. 2. Place a stable support under the rear frame to support the unit when the rear wheels are removed. DT19 FIGURE 1 3. Remove the two (2) retaining rings on the rear wheel (they are not reusable, new rings are provided in the kit). Remove wheel from rear axle. (Some units use a cotter pin instead of retaining rings.) 4.
SEEDER ASSEMBLY 10. Re-attach rubber flap rod with push nut to the frame being sure cable is routed above flap rod. See Figure 3. (Some units us cotter pins). DT23 FIGURE 5 DT21 FIGURE 3 11. Using two (2) wire ties attach cable to the frame. See Figure 4. 15. Center agitators in seed box and tighten bearing locking collars. Use punch to tighten the collar then tighten the set screw. Repeat for the other side. 16. Slide wheel on and apply two (2) retaining rings.
SEEDER ASSEMBLY 20. Attach the cable with a wire tie farther up the handle. 21. Check adjustment of the cable by tipping unit forward confirming that when the control lever is in the closed position the seedgate is fully closed. If the seedgate needs adjusting, loosen the screw and nut holding the cable clamp. Move the cable back or forward in the clamp until the seedgate is fully closed when the control lever is in the closed postion.
SEEDER ASSEMBLY Instructions for the seeder IMPORTANT INFORMATION The equipment is only intended to sow grass seeds on lawns. All other use such as spreading lime or manure is incorrect and could damage the equipment. General information DT22RF The seed hopper is mounted on the rear of the machine. The seeds are released with a lateral space of approximately 3.8 cm ( 1 1/2") after the blades have cut the soil. Delta blades are recommended for seeding.
SERVICE JOURNAL Action Date, stamp, signature Delivery service 1. Break the packaging and make sure the machine has not been damaged in transport. 2. Where applicable, assembly accompanying components. 3. Check that the machine design corresponds to the customer order. 4. Check that the right amount of oil is in the engine and transmission. 5. Check that the working equipment is properly set. 6. Check that the drive pulleys are aligned. 7. Check that belts are properly adjusted. 8.
Sound - Model 968999132 LWA 102 Sound Test Sound test conducted was in accordance with 2000/14/EC and was performed on 07 October 2002 under the conditions listed. General Condidtion: 66 ° F. Temperature: Wind Speed: Clear Less than 8 mph R092502-01 Test Report: Vibration - Model 968999132 11.5 rms Vibraton Level Vibration level at the operators handles were measured in the vertical, lateral, and longitudinal directions using calibrated vibration test equipment.
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