Operator´s manual 3120K Please read these instructions carefully and make sure you understand them before using the machine.
SYMBOL EXPLANATION Symbols on the power cutter: WARNING! The power cutter can be dangerous! Careless and incorrect use can result in serious or fatal injury to the operator or others. Please read the instructions carefully and make sure you understand them before using the power cutter.
CONTENTS List of Contents Before using your new Power cutter • Read the Operator’s Manual carefully. • Check the assembly and adjustment of the cutting blade, see chapter ”Assembly”. • Start the engine and check the carburettor settings. See chapter ”Maintenance”, section ”Carburettor”. When adjusted correctly the cutting blade should not rotate when idling. Setting the idling speed is described in the Operator’s Manual. Adjust the speed according to these instructions.
SAFETY INSTRUCTIONS ! WARNING! Incorrect or careless use of a power cutter can turn it into a dangerous tool that can cause serious or even fatal injury. It is extremely important that you read and understand this manual. PERSONAL PROTECTIVE EQUIPMENT ! WARNING! When using a power cutter, protective equipment approved by the appropriate authorities must be used.
SAFETY INSTRUCTIONS 3 Muffler ! WARNING! During use and for some time after the muffler is very hot. Do not touch the muffler if it is hot! The muffler is designed to give the lowest possible noise level and to direct the engine‘s exhaust fumes away from the user. The engine‘s exhaust fumes are hot and can contain sparks, which can lead to the outbreak of fire.
SAFETY INSTRUCTIONS 3 Muffler Never use a machine that has a defective muffler. Check regularly that the muffler is secured to the engine body. GENERAL SAFETY INSTRUCTIONS IMPORTANT INFORMATION! Do not use the power cutter until you have read the entire contents of this Operator’s Manual. All servicing, in addition to the points listed in the section ”Control, maintenance and service of the power cutter’s safety equipment”, should be carried out by trained service specialists.
SAFETY INSTRUCTIONS Fuel safety GENERAL WORKING INSTRUCTIONS (Filling/Fuel mixture/Storage) This section takes up the basic safety precautions for working with the power cutter. Follow these general working instructions, but never use a machine without the possibility of calling for help in the event of an accident. ! WARNING! Exercise great care when handling fuel. Bear in mind the risk of fire, explosions and inhaling fumes. • Never fill the machine while the engine is running.
SAFETY INSTRUCTIONS ! Over exposure to vibrations can result in blood-vessel or nerve injury to persons suffering with blood circulation problems. Seek medical attention if you experience physical symptoms that can be related to over exposure to vibrations. Examples of such symptoms are numbness, lack of feeling, “tickling“, “pricking“, pain lack of or a reduction in normal strength, changes in the colour of the skin or its surfaces. These symptoms normally appear in the fingers, hands or wrists.
SAFETY INSTRUCTIONS Pull in Pull in occurs when the lower part of the blade is suddenly stopped or when the cut closes. (To avoid this see the section ”How to avoid kickback” and ”Pinching/rotation” below). Pinching/rotation Pinching occurs when the cut closes. The power cutter can be drawn suddenly and powerfully downwards. How to avoid pinching Support the work piece in such a way that the cut remains open during the cutting operation and when the cut is finished.
SAFETY INSTRUCTIONS CUTTING BLADES Abrasive blades The cutting material in an abrasive blade consists of abrasive corn that is held together by an organic bonding agent. ”Reinforced blades” are made up of a fabric or fibre base that prevents total breakage at maximum working speed if the blade should be cracked or damaged. (The term reinforced does not refer to those cutting blades that are only reinforced around the flange).
SAFETY INSTRUCTIONS Cutting blades Guard Check that the guard is not cracked or shows signs of any other damage. Clean the inside of the guard before fitting a new blade. Check that the guard can be adjusted. Type of cutting blades Check that the blade is approved for the same or higher speed according to the aproval plate of the engine. Do not exceed the maximum working speed stated on the blade. Diamond blades Damage • Ensure the blade it not cracked or damaged in any other way.
WHAT IS WHAT? 19 14 1 18 5 15 6 2 21 20 16 3 4 7 10 8 11 17 9 12 13 What is what on the power cutter? 1. Cylinder cover 12. Throttle control 2. Muffler 13. Combination spanner 3. Fuel tank 14. Air filter cover 4. Starter throttle catch 15. Blade guard 5. Choke 16. Starter handle 6. Throttle trigger lockout 17. Operator’s manual 7. Stop switch 18. Adjustment handle for blade guard 8. Cutting head 19. Front handle 9. Cutting arm 20. Starter 10.
ASSEMBLY Fitting the cutting head Fitting the cutting blade Remove the bolts (1). Remove the cover. Fit the drive belt over the clutch drum. Refit the cover and tighten the bolts. Partner cutting blades are manufactured and approved for freehand cutting. The paper labels on each side of the blade are there to distribute the pressure from the flange washer and prevent the blade from slipping. 1 The blade is placed between the flange hub (A) and the flange washer (B).
FUEL HANDLING Fuelmix Fuelling IMPORTANT! The power cutter is equipped with a two-stroke engine and must always been run using a mixture of petrol and two-stroke engine oil. It is important to accurately measure the amount of oil to be mixed to ensure that the correct mixture is obtained. When mixing small amounts of fuel, even small inaccuracies can drastically affect the ratio of the mixture. ! Always provide for good ventilation when handling fuel.
START AND STOP Start and stop ! Start WARNING! Before starting observe the following: • Do not start the power cutter without the cutting arm or cutting head fitted. Otherwise the clutch can come loose and cause personal injury. • Always move the power cutter from the filling area before starting. • Ensure that you and the machine stand firmly and that the cutting blade rotates freely. • Make sure no unauthorised persons are within the working area.
MAINTENANCE Adjusting the drive belt Belt pulley and clutch Never start the engine when the belt pulley and clutch are removed for maintenance. • The drive belt is fully enclosed and well protected from dust, dirt and mechanical effects during the cutting process. A • To tension the drive belt, slightly loosen the bolts (A), which secure the cutting head and belt guard. • Turn the tensioning screw so that the nut (B) is located directly under the arrow on the cover.
MAINTENANCE Carburettor Your HUSQVARNA product has been designed and manufactured to specifications that reduce harmful emissions. After your unit has been run 8-10 tanks of fuel the engine has broken in. To ensure that your unit is at peak performance and producing the least amount of harmful emissions after break in, have your authorized servicing dealer, who has a revolution counter at his disposal, to check your carburettor for optimum operating conditions.
MAINTENANCE Fuel filter • The fuel filter sits inside the fuel tank. • The fuel tank must be protected from contamination when filling. This reduces the risk of operating disturbances caused by blockage of the fuel filter. • The filter cannot be cleaned but must be replaced with a new filter when it blocked. The filter should be changed at least once per year.
MAINTENANCE Starter ! Tensioning the recoil spring WARNING! • The recoil spring sits in its tensioned position in the starter housing and can with careless handling fly out and cause personal injury. • When replacing the recoil spring or the starter cord great care should be exercised. Always wear protective glasses. Replacing a broken or worn starter cord • Lift up the starter cord from the cut out on the pulley and turn the pulley approx. 2 turns clockwise.
MAINTENANCE Muffler Cooling system The muffler is designed in order to reduce the noise level and to direct the exhaust gases away from the operator. The exhaust gases are hot and can contain sparks, which may cause fire if directed against dry and combustible material. To maintain as low an operating temperature as possible the power cutter is equipped with a cooling system. The cooling system consists of: Never use a saw with a clogged or defective muffler. 1. An air intake on the starter unit. 2.
MAINTENANCE 2 5 9 4 11 15 17 1 6 20 12 8 18 19 Below follows some general maintenance instructions. If you need further information please contact your service workshop. 2 13 14 Daily maintenance 1. Check that throttle components work correctly from a safety view point (throttle and starter throttle catch). 2. Clean the main filter. 3. Check the tension of the drive belt. 4. Check the condition of the cutting blade. 5. Check the condition of the blade guard. 6.
TECHNICAL DATA Engine Cylinder volume, cm3/cu.in Cylinder bore, mm/inch Stroke, mm/inch Idle speed, rpm Recommended max. speed, unloaded, rpm Power, kW 119/7.25 ∅ 60/2.3" 42/1.65" 2 500 9 750 ± 250 5,8 Ignition system FHP Champion RCJ-7Y/NGK BPMR 7A 0,5 (.020") Manufacturer Spark plug Electrode gap, mm/inch Fuel and lubrication system Walbro WG9 1,25/2.65 Manufacturer Carburettor type Fuel capacity, litre/US Pint Weight Without fuel and cutting blade, kg/Lbs 14" (∅ 350 mm) 16" (∅ 400 mm) 13,2/29.
TECHNICAL DATA EU declaration of conformity (Only applies to Europe) Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel.
114 00 91-26 ´+H),¶6o¨ 2002W12
