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Operator′s manual
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, with the return spring to the operating position. 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. Stop, in the fixed position. Please read the operator’s manual carefully and make sure you understand Other symbols/decals on the machine refer to the instructions before using the machine. special certific
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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 safety
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WHAT IS WHAT? 1 2 3 4 5 17 6 16 15 7 13 14 12 11 10 8 9 24 23 22 18 19 20 21 26 25 What is what on the power cutter? 1 Front handle 14 Fuel tank 2 Water tap 15 Automatic decompression valve 3 Warning decal 16 Guard for the blade 4 Air filter cover 17 Adjustment handle for guard 5 Cylinder cover 18 Belt guard 6 Choke 19 Water connection with filter 7 Throttle lockout 20 Cutting arm 8 Throttle control 21 Rating plate 9 Start throttle lock 22 Belt tensioner 10 Stop switch 23 Cutting he
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SAFETY INSTRUCTIONS Steps before using a new power Personal protective equipment cutter. WARNING! You must use approved personal • Please read the operator’s manual carefully. protective equipment whenever you use the ! machine. Personal protective equipment • Check the cutting blade’s mounting, see the chapter cannot eliminate the risk of injury but it will ”Assembly”. reduce the degree of injury if an accident • Start the engine and check the idling setting, see
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SAFETY INSTRUCTIONS Machine′s safety equipment IMPORTANT INFORMATION This section describes the machine′s safety equipment, its For mufflers it is very important that you follow the purpose, and how checks and maintenance should be carried instructions on checking, maintaining and servicing your out to ensure that it operates correctly. See the ”What is machine. See instructions under the heading Checking, what?” section to locate where this eq
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SAFETY INSTRUCTIONS Throttle lockout Checking, maintaining and servicing • Make sure the throttle control is locked at the idle setting the machine′s safety equipment when the throttle lockout is released. WARNING! All servicing and repair work on the machine requires special training. This is ! especially true of the machine′s safety equipment. If your machine fails any of the checks described below you must contact your service agent. When you buy any of our products we guarantee th
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SAFETY INSTRUCTIONS Fuel safety General safety precautions • A power cutter is designed to cut hard materials, such as masonry. Observe the increased risk of kickback when cutting soft materials. See instructions under the heading How to avoid kickback. (Refuelling/Fuel mixture/Storage.) • Do not use the power cutter until you have read the entire contents of this Operator’s Manual. WARNING! Take care when handling fuel. All servicing, in addition to the points listed in the section Bear
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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 General into a situatio
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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 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. WARNING! Always ensure there is ad
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STARTING AND STOPPING Starting Starting and stopping WARNING! Note the following before WARNING! The cutting blade rotates when starting: ! the engine is started. Make sure it can rotate ! freely. Do not start the power cutter without the belt guard fitted. Otherwise the clutch could Grip the front handle with your left hand. Put your right foot on come loose and cause personal injuries. the lower section of the rear handle pressing the machine Always move the machine away from the against
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MAINTENANCE • The cutting head is now loose and can be removed from Tensioning the drive belt the machine. Remove the rear belt guard by releasing the two screws holding the guard. • The drive belt is fully enclosed and well protected from dust and dirt. • When the drive belt is to be tensioned, release the bolts holding the cutting arm. • Replace the drive belt. • Assemble in the reverse order as set out for dismantling. • Check that the guard over the cutting blade is not cracked or damag
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MAINTENANCE Put the filter in a plastic bag and pour the filter oil over it. Fuel filter Knead the plastic bag to distribute the oil. Squeeze the excess oil out of the filter inside the plastic bag and pour • The fuel filter sits inside the fuel tank. off the excess before fitting the filter to the machine. • The fuel tank must be protected from contamination when CAUTION! Never use common engine oil. filling. This reduces the risk of operating disturbances caused by blockage of the fuel filter lo
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MAINTENANCE • Pull the cord out about 30 cm and lift it into the cut-out in Tensioning the recoil spring the periphery of the starter pulley. When the cord is intact: • Hook the starter cord in the notch in the pulley and turn Release the spring tension by letting the pulley rotate the starter pulley about 2 turns clockwise. slowly backwards. Changing a broken recoil spring Remove any remnants of the old starter cord and check that the return spring works. Insert the new starter cord throug
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MAINTENANCE Fitting the starter Cooling system • To fit the starter, first pull out the starter cord and place the starter in position against the crankcase. Then slowly release the starter cord so that the pulley engages with the pawls. To keep the working temperature as low as possible the machine is equipped with a cooling system. The cooling system consists of: 5 4 3 • Tighten the screws. Spark plug 2 1 1 Air intake on the starter. The spark plug condition is influenced by: 2 Air guide plat
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MAINTENANCE General maintenance instructions Below you will find some general maintenance instructions. If you have more questions, contact your service agent. 4 8 12 9 3 10 19 15 17 5 18 14 2 6 16 13 17 1 7 11 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. 5 Check the starter and
