User manual HUSQVARNA K750

[. . . ] Operator′s manual K750 Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. English 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. Run position. Stop, with the return spring to the operating position. 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 Stop, in the fixed position. Other symbols/decals on the machine refer to special certification requirements for certain markets. This product is in accordance with applicable EC directives. [. . . ] If blades from other manufacturers are used, ensure that the blades conform to all regulations and demands that concern this type of power cutter. Special blades Some cutting blades are designed for stationary equipment and for use with attachments. Such cutting blades must not be used on portable power cutters. Always contact local authorities and make sure you are following applicable directives. ! General WARNING!Cutting plastics with a diamond blade or rescue blade can cause kickback when the material melts due to the heat produced when cutting and sticks to the blade. Abrasive discs 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. A cutting blade’s performance is determined by the type and size of abrasive corn, and the type and hardness of the bonding agent. Abrasive discs, types and use Use Disc type Material Concrete, asphalt, stone masonry, cast iron, aluminium, copper, brass, cables, rubber, plastic, etc. Steel, steel alloys and other hard metals. Water cooling Can be used to reduce dust. Run the disc dry for about a half minute after using an abrasive disc with water cooling. NOT recommended Cutting blades are available in two basic designs; abrasive discs and diamond blades. Concrete Always remove the cutting blade when the machine is transported. Make sure that the right bushing is used for the cutting blade to be fitted on the machine. See the instructions under the heading Assembling the cutting blade. High-quality blades are often most economical. Lower quality blades often have inferior cutting capacity and a shorter service life, which results in a higher cost in relation to the quantity of material that is cut. Metal Check that the blade is approved for the same or higher speed according to the aproval plate of the engine. Never use a cutting blade with a lower speed rating than that of the power cutter. English – 11 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 lightly with a screwdriver or the like. If the disc does not produce a resonant, ringing sound it is damaged. Diamond blades Diamond blades consist of a steel body provided with segments that contain industrial diamonds. Diamond blades ensure lower costs per cutting operation, fewer blade changes and a constant cutting depth. When using diamond blades make sure that it rotates in the direction indicated by the arrow on the blade. Always use a sharp diamond blade. Sharpen the blade by cutting in a soft material such as sandstone or brick. [. . . ] Use of the wrong spark plug can damage the piston/cylinder. 20 – English MAINTENANCE General maintenance instructions Below you will find some general maintenance instructions. If you have more questions, contact your service agent. 4 8 9 19 12 3 10 15 5 18 6 16 2 14 13 17 11 Daily maintenance 1 2 3 4 5 6 7 Check that the components of the throttle control work smoothly (throttle control and throttle trigger lock). Check the condition of the blade and the drive gear. Check the starter and starter cord and clean the outside of the starter unit’s air intake. [. . . ]