Operator’s manual (EPA) K950 Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
KEY TO SYMBOLS Key to symbols WARNING! The machine can be a dangerous tool if used incorrectly or carelessly, which can cause serious or fatal injury to the operator or others. Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. Always wear: • Protective helmet • Hearing protection • Protective goggles or a visor • Breathing mask WARNING! Dust forms when cutting, this can cause injuries if inhaled. Use an approved breathing mask.
CONTENTS Contents KEY TO SYMBOLS Key to symbols ............................................................. CONTENTS Contents ...................................................................... WHAT IS WHAT? What is what on the power cutter? ............................... SAFETY INSTRUCTIONS Steps before using a new power cutter. ....................... Personal protective equipment ..................................... Machine′s safety equipment ........................................
WHAT IS WHAT? 19 22 14 1 5 21 6 18 15 20 2 16 3 7 23 4 11 17 8 9 10 12 13 What is what on the power cutter? 1 Cylinder cover 13 Combination spanner 2 Muffler 14 Air filter cover 3 Fuel tank 15 Blade guard/spray guard 4 Start throttle lock 16 Starter handle 5 Choke 17 Operator’s manual (EPA) 6 Throttle lockout 18 Adjustment handle for blade guard 7 Stop switch 19 Front handle 8 Cutting head 20 Starter 9 Cutting arm 21 Decompression valve 10 Belt tensioner 22 Warning de
SAFETY INSTRUCTIONS Steps before using a new power cutter • • • • Please read the operator’s manual carefully. Check the cutting blade’s mounting, see the chapter ”Assembly”. Start the engine and check the idling setting, see instructions under the heading Maintenance. When the carburettor is set correctly the cutting blade should be still while idling. Setting of the idle speed is described in the Operator’s Manual. Set the correct speed according to these instructions.
SAFETY INSTRUCTIONS • Heavy-duty, firm grip gloves. Stop switch Use the stop switch to switch off the engine. • Tight-fitting, heavy-duty and comfortable clothing that permits full freedom of movement. Muffler • • Use leg-guards recommended for the material to be cut. Boots with steel toe-caps and non-slip sole • Always have a first aid kit nearby. ! The muffler is designed to keep noise levels to a minimum and to direct exhaust fumes away from the user.
SAFETY INSTRUCTIONS The trigger lock remains pressed in as long as the throttle is pressed. When the grip on the handle is released the throttle trigger and the throttle trigger lock both return to their original positions. This is controlled by two independent return spring systems. This means that the throttle trigger is automatically locked in the idle position. Stop switch Guard for the blade Muffler Start the engine and make sure the engine stops when you move the stop switch to the stop setting.
SAFETY INSTRUCTIONS • Start the power cutter and apply full throttle. Release the throttle control and check that the cutting blade stops and remains stationary. If the cutting blade rotates when the throttle is in the idle position you should check the carburettor’s idle adjustment. See instructions under the heading Maintenance. Transport and storage Do not store or transport the power cutter with the cutting blade fitted.
SAFETY INSTRUCTIONS ! WARNING! Bear in mind the risk of fire, explosion and inhaling fumes. Stop the engine before fuelling. Do not fill so that the fuel runs over. Wipe up all spillage on the ground and machine. If you spill fuel on yourself or your clothes. Change your clothes. Move the machine at least 3 metres away from the refuelling area before starting. General working instructions ! Cutting ! General • Start cutting with the machine running at maximum speed.
SAFETY INSTRUCTIONS • • Move the blade slowly forwards and backwards to achieve a small contact area between the blade and the material to be cut. This reduces the temperature of the blade and ensures effective cutting. Feed down the machine in line with the blade. Pressure from the side can damage the blade and is very dangerous. How to avoid kickback ! WARNING! Kickback can happen very suddenly and violently; kicking the power cutter and cutting blade back at the user.
SAFETY INSTRUCTIONS Pinching/rotation If the cut is pressed together this can lead to jamming. The machine can be pulled down suddenly with a very powerful jerk. 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. Water cooling ! WARNING! Water cooling, which is used when cutting concrete, cools the blade and increases its service life while also reducing the formation of dust.
SAFETY INSTRUCTIONS Abrasive discs Diamond blades The cutting material on abrasive discs consists of grit bonded using an organic binder. ”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. Diamond blades consist of a steel body provided with segments that contain industrial diamonds.
ASSEMBLY Assembling the cutting head Remove the bolt (1) and nut (2). Remove the guard. Fit the drive belt on the clutch drum. Fit the guard and tighten the screws. Do not use warped, notched, indented or dirty flange washers. Do not use different dimensions of flange washers. Fitting the cutting blade Husqvarna cutting blades are manufactured and approved for freehand cutting.
FUEL HANDLING Fuel Mixing CAUTION! The machine is equipped with a two-stroke engine and must always been run using a mixture of gasoline 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 mix the gasoline and oil in a clean container intended for fuel.
STARTING AND STOPPING Starting and stopping ! WARNING! Note the following before starting: Do not start the power cutter without the belt guard fitted. Otherwise the clutch could come loose and cause personal injuries. Starting ! WARNING! The cutting blade rotates when the engine is started. Make sure it can rotate freely. Grip the front handle with your left hand. Put your right foot on the lower section of the rear handle pressing the machine against the ground.
MAINTENANCE Tensioning the drive belt • • • Replace the drive belt. • Assemble in the reverse order as set out for dismantling. • Check that the blade guard over the cutting blade is not cracked or damaged in any other way. Replace when damaged. The drive belt is fully enclosed and well protected from dust and dirt. When tensioning the drive belt, slightly loosen the nuts (A) holding the cutting head and belt guard.
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 located inside the tank. • The filter cannot be cleaned but must be replaced with a new filter when it is clogged. The filter should be changed at least once per year. Put the filter in a plastic bag and pour the filter oil over it. Knead the plastic bag to distribute the oil.
MAINTENANCE Starter Tensioning the recoil spring • ! WARNING! When the recoil spring is wound up in the starter housing it is under tension and can, if handled carelessly, pop out and cause personal injury. Hook the starter cord in the notch in the pulley and turn the starter pulley about 2 turns clockwise. CAUTION! Check that the pulley can be turned an additional 1/2 turn when the starter cord is pulled all the way out. Always be careful when changing the recoil spring or the starter cord.
MAINTENANCE Spark plug Cooling system The spark plug condition is influenced by: To keep the working temperature as low as possible the machine is equipped with a cooling system. • Incorrect carburetor adjustment. • Wrong fuel mixture (too much oil). • A dirty air filter. The cooling system consists of: These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting difficulties.
MAINTENANCE General maintenance instructions Below you will find some general maintenance instructions. If you have more questions, contact your service agent. Daily maintenance 1 Check that the components of the throttle control work smoothly (throttle control and throttle trigger lock). 2 Check the tension of the drive belt. 3 Check the condition of the blade and the drive gear. 4 Check the condition of the blade guard.
TECHNICAL DATA Engine K950 Cylinder displacement, cu.in/cm3 5,7/93,6 Cylinder bore, inch/mm 2,2/56 Stroke, inch/mm 1,5/38 Idle speed, rpm 2500 Recommended max.
FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The EPA (The US Environmental Protection Agency), Environment Canada and Husqvarna Construction Products are pleased to explain the emissions control system warranty on your 2001 and later small nonroad engine. In U.S. and Canada, new small nonroad engines must be designed, built and equipped to meet the federal stringent anti-smog standards.
! WARNING! Cutting, especially when DRY cutting, generates dust that comes from the material being cut, which frequently contains silica. Silica is a basic component of sand, quartz, brick clay, granite and numerous other minerals and rocks. Exposure to excessive amount of such dust can cause: Respiratory disease (affecting your ability to breath), including chronic bronchitis, silicosis and pulmonary fibrosis from exposure to silica. These diseases may be fatal; Skin irritation and rash.