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H1153174-95,426LST,430LS,US.fm  Page 1  Monday, November 30, 2009  10:56 AM
Operator’s manual
426LST  430LS
Please read the operator’s manual carefully and make sure you understand the instructions 
before using the machine.
E En ng glliis sh h
E En ng glliis sh h                                                                                                                                                                                                                                     
                    
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                        15 m 50FT                  H1153174-95,426LST,430LS,US.fm  Page 2  Monday, November 30, 2009  10:56 AM KEY TO SYMBOLS Other symbols/decals on the machine refer to  Symbols special certification requirements for certain  WARNING! Clearing saws,  markets. brushcutters and trimmers can be  The engine is switched off by moving  dangerous! Careless or incorrect  the stop switch to the stop position.  use can result in serious or fatal  CAUTION!  The stop switch  injury to the operator or others. It is
                    
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                                                                                         H1153174-95,426LST,430LS,US.fm  Page 3  Monday, November 30, 2009  10:56 AM CONTENTS Contents Note the following before  KEY TO SYMBOLS starting: Symbols ................................................................ 2 Please read the operator’s manual carefully. CONTENTS Maintenance, replacement, or repair of the emission  Contents ............................................................... 3 control devices and system may b
                    
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                                        H1153174-95,426LST,430LS,US.fm  Page 4  Monday, November 30, 2009  10:56 AM INTRODUCTION Dear customer! Congratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to 1689,  when the Swedish King Karl XI ordered the construction of a factory on the banks of the Huskvarna River, for production  of muskets. The location was logical, since water power was harnessed from the Huskvarna River to create the water- powered plant. During ov
                    
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                                    H1153174-95,426LST,430LS,US.fm  Page 5  Monday, November 30, 2009  10:56 AM WHAT IS WHAT? 10 8 11 7 16 6 15 9 12 14 13 5 3 17 2 19 18 4 1 What is what? 1 Trimmer head 11 Cylinder cover 2 Grease filler cap, bevel gear 12 Starter handle 3 Bevel gear 13 Fuel tank 4 Cutting attachment guard 14 Air purge 5 Shaft 15 Choke control 6 Loop handle 16 Air filter cover 7 Stop switch 17 Combination spanner 8 Throttle lockout 18 Locking pin 9 Throttle control 19 Operator’s manual 10 Spark plug cap a
                    
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                                           H1153174-95,426LST,430LS,US.fm  Page 6  Monday, November 30, 2009  10:56 AM GENERAL SAFETY PRECAUTIONS Important Personal protective equipment IMPORTANT! IMPORTANT! The machine is only designed for trimming grass. A clearing saw, brushcutter or trimmer can be  dangerous if used incorrectly or carelessly, and can  The only accessories you can operate with this engine  cause serious or fatal injury to the operator or others. It  unit are the cutting attachments we recommend in t
                    
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                                                      H1153174-95,426LST,430LS,US.fm  Page 7  Monday, November 30, 2009  10:56 AM GENERAL SAFETY PRECAUTIONS CLOTHING Throttle lockout Wear clothes made of a strong fabric and avoid loose  The throttle lockout is designed to prevent accidental  clothing that can catch on twigs and branches. Always  operation of the throttle control. When you press the lock  wear heavy, long pants. Do not wear jewellery, shorts  (A) (i.e. when you grasp the handle) it releases the throttle
                    
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                                             H1153174-95,426LST,430LS,US.fm  Page 8  Monday, November 30, 2009  10:56 AM GENERAL SAFETY PRECAUTIONS For mufflers it is very important that you follow the  Cutting attachment guard instructions on checking, maintaining and servicing your  machine. Never use a machine that has a faulty muffler. Regularly check that the muffler is securely attached to  This guard is intended to prevent loose objects from being  the machine. thrown towards the operator. The guard also protects t
                    
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                                         H1153174-95,426LST,430LS,US.fm  Page 9  Monday, November 30, 2009  10:56 AM GENERAL SAFETY PRECAUTIONS Trimmer head Cutting equipment This section describes how to choose and maintain your  IMPORTANT! cutting equipment in order to: Always ensure the trimmer cord is wound tightly and  • Reduce the risk of blade thrust. evenly around the drum, otherwise the machine will  • Obtain maximum cutting performance. generate harmful vibration. • Extend the life of cutting equipment. • Onl
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 10  Monday, November 30, 2009  10:56 AM ASSEMBLY Fitting the loop handle Fitting the trimmer guard and  trimmer head • Position the handle on the shaft. Note that the handle  must be mounted below the arrow on the shaft. • Fit the correct trimmer guard (A) for use with the  trimmer head. A • Tighten the two screws. • Fit the drive disc (B) on the output shaft. • Slide the spacer into the slot in the loop handle. Fit the  nut and screw. Tighten. Assembling the
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 11  Monday, November 30, 2009  10:56 AM FUEL HANDLING Gasoline Fuel safety Never start the machine: 1 If you have spilled fuel on it. Wipe off the spillage and  allow remaining fuel to evaporate. CAUTION!  Always use a quality gasoline/oil mixture with  2 If you have spilled fuel on yourself or your clothes,  an octane rating of at least 87 octane ((RON+MON)/2). If  change your clothes. Wash any part of your body that  your machine is equipped with a catalyti
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 12  Monday, November 30, 2009  10:56 AM FUEL HANDLING Mixing Fueling • Always mix the gasoline and oil in a clean container  intended for fuel. • Always start by filling half the amount of the gasoline  to be used. Then add the entire amount of oil. Mix  (shake) the fuel mixture. Add the remaining amount of WARNING! Taking the following  gasoline. precautions, will lessen the risk of fire: ! • Mix (shake) the fuel mixture thoroughly before filling  the machine’s
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 13  Monday, November 30, 2009  10:56 AM STARTING AND STOPPING Primer bulb: Press the air purge repeatedly until fuel  Check before starting begins to fill the bulb. The bulb need not be completely  filled. • Check that the trimmer head and trimmer guard are  not damaged or cracked. Replace the trimmer head or  trimmer guard if they have been exposed to impact or  are cracked. • Never use the machine without a guard nor with a  defective guard. • All covers must
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 14  Monday, November 30, 2009  10:56 AM STARTING AND STOPPING CAUTION!  Do not pull the starter cord all the way out and  do not let go of the starter handle when the cord is fully  extended. This can damage the machine. Stopping Stop the engine by switching off the ignition. 14 – English RUN STOP                                                                                                                                                                     
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 15  Monday, November 30, 2009  10:56 AM WORKING TECHNIQUES 6 Always hold the machine with both hands. Hold the  General working instructions machine on the right side of your body. IMPORTANT! This section takes up the basic safety precautions for  working with a trimmer. If you encounter a situation where you are uncertain  how to proceed you should ask an expert. Contact your  dealer or your service workshop. Avoid all usage which you consider to be beyond y
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 16  Monday, November 30, 2009  10:56 AM WORKING TECHNIQUES Clearing Basic working techniques • The clearing technique removes all unwanted  Always slow the engine to idle speed after each working  vegetation. Keep the trimmer head just above the  operation. Long periods at full throttle without any load on  ground and tilt it. Let the end of the cord strike the  the engine can lead to serious engine damage. ground around trees, posts, statues and the like.  C
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 17  Monday, November 30, 2009  10:56 AM MAINTENANCE  On mufflers without a catalytic converter the screen  Carburetor should be cleaned weekly, or replaced if necessary. On  mufflers fitted with a catalytic converter the screen should  Adjustment of the idle speed be checked, and if necessary cleaned, monthly. If the  Check that the air filter is clean. When the idle speed is  screen is damaged it should be replaced. If the screen  correct, the cutting attachment
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 18  Monday, November 30, 2009  10:56 AM MAINTENANCE replaced after about a month in operation or earlier if • Excessive fuel consumption. necessary. 0,6 - 0,7 mm (426 LST) 0,9 - 1,0 mm (430 LS) Clean the filter every 25 hours, or more regularly if  conditions are exceptionally dusty. CAUTION!  Always use the recommended spark plug  An air filter that has been in use for a long time cannot be  type! Use of the wrong spark plug can damage the piston/ cleaned comp
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 19  Monday, November 30, 2009  10:56 AM MAINTENANCE Maintenance schedule The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the  Maintenance section. Daily Weekly Monthly  Maintenance maintenance maintenance maintenance Clean the outside of the machine. X Make sure the throttle trigger lock and the throttle function  X correctly from a safety point of view. Check that the stop switch works corr
                    
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                        H1153174-95,426LST,430LS,US.fm  Page 20  Monday, November 30, 2009  10:56 AM TECHNICAL DATA Technical data 426LST 430LS Motor 3 Cylinder displacement, cu.in/cm 1,55/25,4 1,80/29,5 Cylinder bore, inch/mm 1,34/34 1,50/38 Stroke, inch/mm 1,10/28 1,03/26 Idle speed, rpm 3000 3000 Recommended max. speed, rpm 11500 10000 Speed of output shaft, rpm 5500 6850 Max. engine output, acc. to ISO 8893, kW/ rpm 0,87/7500 1,03/8500 Catalytic converter muffler No No Speed-regulated ignition system No No Ignition