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Operator’s manual (EPA)
K750
Please read the operator’s manual carefully and make sure you understand the
instructions before using the machine.
E E E En n n ng g g glllliiiis s s sh h h h
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KEY TO SYMBOLS Key to symbols Stop, in the fixed position. WARNING! The machine can be a Other symbols/decals on the machine dangerous tool if used incorrectly or refer to special certification carelessly, which can cause serious or requirements for certain markets. 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 • Hea
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CONTENTS Contents KEY TO SYMBOLS Key to symbols ............................................................. 2 CONTENTS Contents ...................................................................... 3 WHAT IS WHAT? What is what on the power cutter? ............................... 4 SAFETY INSTRUCTIONS Steps before using a new power cutter. ....................... 5 Personal protective equipment ..................................... 5 Machine′s saf
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WHAT IS WHAT? 1 2 3 4 5 18 6 17 16 7 14 15 13 12 11 10 8 9 25 24 23 19 20 21 22 27 26 What is what on the power cutter? 1 Front handle 15 Fuel tank 2 Water tap 16 Decompression valve 3 Warning decal 17 Guard for the blade 4 Air filter cover 18 Adjustment handle for guard 5 Cylinder cover 19 Belt guard 6 Choke 20 Water connection with filter 7 Throttle lockout 21 Cutting arm 8 Throttle control 22 Type plate 9 Start throttle lock 23 Belt tensioner 10 Stop switch 24 Cutting head 11 Discon
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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 You will find the following labels on your power cutter: while idling. Setting of the idle speed is described in the Operator’s Ma
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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 WARNING! The muffler gets very hot in use and remains so for a short time afterwards. ! Do not touch the muffler if it is hot! • Use leg-guards recommended for the material to be cut. • Boots with steel toe-caps and non-slip sole The muffler is des
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SAFETY INSTRUCTIONS positions. This is controlled by two independent return spring Muffler systems. This means that the throttle trigger is automatically Never use a machine that has a faulty muffler. locked in the idle position. Guard for the blade Regularly check that the muffler is securely attached to the machine. This guard is fitted above the cutting blade and is designed to prevent parts of the blade or cutting fragments from being thrown towards the user. Throttle lockou
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SAFETY INSTRUCTIONS Checking the blade guard Fuel safety WARNING! Always check that the guard is correctly fitted before starting the machine. ! Check that the cutting blade is fitted (Refuelling/Fuel mixture/Storage.) correctly and does not show signs of damage. A damaged cutting blade can cause personal injury. See instructions under the WARNING! Take care when handling fuel. heading Assembly. Bear in mind the risk of fire, explosion and ! inhaling fumes. Check that the guard is complete
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SAFETY INSTRUCTIONS Cutting General working instructions WARNING! The safety distance for the power cutter is 15 metres. You are responsible to ! ensure that animals and onlookers are not within the working area. Do not start cutting WARNING! This section describes basic until the working area is clear and you are safety directions for using a power cutter. ! standing firmly. This information is never a substitute for professional skills and experience. If you get into a situation where
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SAFETY INSTRUCTIONS • Move the blade slowly forwards and backwards to achieve How to avoid kickback a small contact area between the blade and the material to be cut. This reduces the temperature of the blade and WARNING! Kickback can happen very ensures effective cutting. suddenly and violently; kicking the power ! cutter and cutting blade back at the user. If this happens when the cutting blade is moving it can cause very serious, even fatal injuries. It is vital you understand what c
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SAFETY INSTRUCTIONS Pinching/rotation Water cooling If the cut is pressed together this can lead to jamming. The machine can be pulled down suddenly with a very powerful WARNING! Water cooling, which is used jerk. when cutting concrete, cools the blade and ! increases its service life while also reducing How to avoid pinching the formation of dust. Disadvantages include difficulties at very low temperatures, the risk Support the work piece in such a way that the cut remains of damaging flo
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SAFETY INSTRUCTIONS Ensure the blade it not cracked or damaged in any other way. Diamond blades for dry cutting Diamond blades for dry cutting are a new generation of blades that do not require water cooling. However, the blades will still be damaged by excessive heat. It is most economical to allow the blade to cool by simply lifting it out from the cut every 30–60 seconds and letting it rotate in the air for 10 seconds. Test the abrasive disc by hanging it on your finger and tapping it li
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ASSEMBLY The shaft can be locked using a screwdriver, steel pin or the Checking the drive axle and flange like. This is slid in as far as possible. The blade is tightened washers clockwise. Check that the threads on the drive shaft are undamaged. Check that the contact surfaces on the blade and the flange washers are undamaged, of the correct dimension, clean, and that they run properly on the drive axle. When a diamond blade is mounted on the power cutter make sure that the diamond blade wi
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FUEL HANDLING • Mix (shake) the fuel mixture thoroughly before filling the Fuel machine’s fuel tank. 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. WARNING! Always ensure there is
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FUEL HANDLING Disconnection function for OilGuard Fueling Machines fitted with OilGuard have a built-in system for identifying incorrect fuel mixtures. Once the machine is WARNING! Taking the following precautions, running, a detector reads the fuel quality which takes about will lessen the risk of fire: ! ten seconds. If the correct amount of Husqvarna OilGuard oil has been used, the machine will run at a normal speed. If the Do not smoke or place hot objects near fuel. wrong type of oil ha
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STARTING AND STOPPING Starting a warm engine Starting and stopping Use the same starting procedure as for a cold engine but without setting the choke control in the choke position. 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. Always move the machine away from the refuelling area before starting. Ensure that you and the machine have a good working stance and that
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MAINTENANCE • Now unscrew the bolts and dismantle the belt guard. Tensioning the drive belt • When the machine is equipped with a friction retarder, a scraping sound can be heard from the bearing housing when the blade is turned by hand. This is quite normal. Please contact an accredited Husqvarna workshop if you have any questions. • Remove the belt from the belt pulley. • The drive belt is fully enclosed and well protected from dust and dirt. • The cutting head is now loose and can be rem
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MAINTENANCE 1 The foam plastic filter is easily accessible under the filter Adjusting the idle speed cover A. This filter should be checked weekly and Adjust the idle speed using the T screw. When an adjustment replaced if necessary. is necessary, first turn the screw clockwise until the blade A starts to rotate. Now turn the screw anti-clockwise until the blade stops rotating. B T In order to obtain a good filtering effect, the filter must be replaced regularly or cleaned and oiled. A special
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MAINTENANCE Guide the cord through the cut-out in the periphery of the Starter pulley and wind the cord 3 times clockwise around the centre of the starter pulley. 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. Always be careful when changing the recoil spring or the starter cord. Always wear protective goggles. Now pull the starter handle and in doing so tension the spring. Repeat
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MAINTENANCE • Remove the recoil spring by turning the starter over and Cooling system loosen the hooks, with the help of a screwdriver. The hooks hold the return spring assembly on the starter. To keep the working temperature as low as possible the machine is equipped with a cooling system. The cooling system consists of: 5 4 • Lubricate the recoil spring with light oil. Fit the pulley and tension the recoil spring. 3 Fitting the starter • To fit the starter, first pull out the starter cord an
