Husqvarna K 760 Owners Manual - Page 16

OPERATING • 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. Thin material Cutting thin and hard material (i.e. a sheet metal covered roof) should be conducted in a forward direction for best control. Cutting with toothed/carbide tipped blades during rescue operaions WARNING! A power cutter should never be ! used with carbide tipped blade for non- emergency work, such as in the construction trades. Be aware at all times that carbide tipped blades are more kickback prone than abrasive or diamond blades if not used properly. If the public safety force (fire department) that purchased this power cutter has decided to equip this unit with a carbide tipped blade for rescue operations, the following safety considerations must be adhered to. Training and protective equipment • Only operators trained in the use of cutting with a power cutter equipped with carbide tipped blade shall be allowed to operate the power cutter. • Full protective fire fighting gear shall be worn by the operator at all times. • A full face shield (not just protective eye glasses) shall be worn by the operator to protect the face from flying debris or a sudden kick-back of the power cutter. Risk area No persons that do not have the protective equipment described above shall be allowed inside the risk area for thrown material. Pinching or jamming Make a careful evaluation of how the object will move during the final stage of the cutting to avoid pinching or jamming. The cut must open during the cut. If the object sags and the cut begins to close the blade may pinch, possibly resulting in a kick-back or damage to the blade. Cutting in line Skewing or twisting in the line of cut will reduce cutting efficiency and damage the blade. Before each rescue operation Check that the blade and th blade guard is not damaged or cracked. Replace the blade or the blade guard if it is exposed to impact or is cracked. • Check that no carbide tips have loosened from the cutting blade. • Check that the blade is not skew or shows signs of cracking or other defects. When cutting in hard materials carbide tipped blades will rapidly lose its sharpness. For best performance during rescue operations we recommend that a new blade be installed. 20 m (66 ft) Blade speed Apply the cutting blade gently with high rotating speed (full throttle) Maintain full speed until cutting is complete. Low blade speed, especially in hard and thin materials can result in jamming and the breaking-off of the carbide tips. 16 - English