Operator´s manual DT18 DT18C Please read these instructions carefully and make sure you understand them before using the machine.
TABLE OF CONTENTS Operating Instructions for Lawn Dethatcher DT18, DT18C with supplement for accessories Introduction ......................................................... 2 Congratulations ................................................ 2 Use ................................................................... 2 Insure your machine ........................................ 2 Good service .................................................... 2 Serial number ................................................
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 WARNING! 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. IMPORTANT INFORMATION Xxxx xxx xxxx xx xxxx x xxxx. 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 8011-235 4 – English
SYMBOLS AND DECALS Translation of instructions Decal 9 Decal 12 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. 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. The engine emits carbon monoxide, which is a colorless, poisonous gas.
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 • 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.
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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.
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PRESENTATION Main components and operating instruments 8011-104 1. Engine 5. Control for seed hopper (Option DT18) 2. Depth knob with depth lock 6. Clutch bar 3. Depth lever 7. Handle 4.
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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”.
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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. 8011-107 Depth knob The knob is used to adjust the cutting depth of the blades. Turning the knob counterclockwise increases the working depth. 8011-108 Depth lock The screw under the depth knob is used to lock the depth knob to prevent it being changed by machine vibrations.
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RUNNING 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.
RUNNING Before you start • Mow the lawn to its normal length. • Allow the lawn to dry. Wet conditions can cause extensive damage to healthy grass. • Set blade depth so that the blades just touch on a flat surface such as a sidewalk or driveway. • Lawns with deep thatch exceeding 2 cm may be best dethatched in two treatments (spring and fall) to avoid major shock to an older lawn. IMPORTANT INFORMATION Clear the lawn of any extraneous objects. Clearly mark rocks and other fixed objects.
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! Allow the exhaust system to cool before performing service. Risk for burns. 8011-028 Cleaning/replacement of the air filter is carried out as follows: 1. Undo the wing nut and lift off the air filter cowling. 2.
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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”. 8011-027 4. Remove and dispose of the spring clips (3) (locking washer type) that hold the blade shaft (2) in place (see the sketch). 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 (2) 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 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. 531003801 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). WARNING! Engine oil can be very hot if it is drained directly after stopping the machine. Allow the engine to cool somewhat.
LUBRICATION 2. Oil change reduction gear 1:6 The reduction gear only appears on a special version of model DT18C. The engine’s reduction axle does not have a drainage screw, but the oil can be drained through the level plug hole (2) by tipping the machine forward. Because it is difficult to avoid spilling gasoline and releasing gasoline fumes, the oil should not be changed indoors. 1. Empty the fuel tank or put a vessel in place to collect gasoline spills. 2.
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TROUBLESHOOTING Symptom Cause Action The engine will not start • User error Fuel valve closed. Open the fuel valve. Choke valve open. Close the choke with cold engine. 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. To ready the machine for storage, follow these steps: 1. Clean the machine carefully, particularly the chassis and working equipment. Mend damage to the paint to prevent rust.
TECHNICAL DATA Specifications DT18C DT18 Engine Honda GX120 Honda GX160 Cylinder volume 119 cm3 (7.3 cu in) 163 cm3 (9.9 cu in) Power 4 hp (3 kW) at 3600 RPM 5.5 hp (4 kW) at 3600 RPM Torque 7.4 Nm at 2500 RPM 10.8 Nm at 2500 RPM Spark plug NGK BPR6ES DENSO W20EPR-U NGK BPR6ES DENSO W20EPR-U Reduction gear 1:6 (special design) - Fuel volume 2.5 liters/0.66 US Gal 3.6 liters/0.95 US Gal Primary drive One V-belt (B-34") One V-belt (B-34") Dethatching breadth 45.7 cm (18") 45.
WIRING DIAGRAM 8011-287 8011-050 1. Engine switch Legend for color abbreviations in wiring diagram 2. Transistor ignition unit RD = Red 3. Spark plug SV = Black 4.
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ASSEMBLY INSTRUCTIONS Assembly directions, catcher bag DT18 (P/N 540000061) 1. Remove both back wheels (F), the wheel plate (E) with accessories. Remove the guard (B), the neoprene deflector (C) and the deflector strap (D) by removing the ten (6 + 4) slotted screws. WARNING! Do not use or start the engine until the catcher bag is in place. 8011-010 A. B. C. D. E. F. Slotted screws Guard Neoprene deflector Deflector strap Wheel plate Back wheels 2.
ASSEMBLY INSTRUCTIONS Assembly directions, seed hopper SD18 (P/N 540000060) 1. Remove both back wheels (E), the wheel plate and accessories. Remove the guard (B), the neoprene deflector (C) and the deflector strap (D) by removing the ten (6 + 4) slotted screws (A). 8011-012 2. A) Fit the bearing and bearing flanges (Q) from the inside of the machine with setscrews and nuts (see illustration). The bearings should be turned with the flat edge inwards.
ASSEMBLY INSTRUCTIONS 3. Adapt the handle for assembly of the control lever mounting by drilling two holes in the handle (see illustration). 8011-014 4. Fit the seed control lever on the handle with the accompanying 1/4" hex screws (Z), washers (Y) and hex nuts (W). Affix the cable to the handle in three places using the cable brackets (X) (see illustration). Affix the open/close decal (Å) on the handle beside the lever (see illustration). 8011-015 W. X. Y. Z. Å.
SUPPLEMENT 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. 8011-003 Connecting the catcher plate Fit the hooks from the plate in the tracks at the back of the machine. Press the plate down in the tracks. Lift the end of the plate about 45°. The hooks at the front of the plate glide down into the keyhole.
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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 and adjust air pressure in the tires. 6. Check that the working equipment is properly set. 7.
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