Stihl TS 800 Instruction Manual - Page 16

English are necessary, always lift the machine and reposition the cutting wheel, taking care to ensure that it is not wedged, tilted, twisted or side loaded. Attempting to change the position or direction of a cut while the wheel is in the cut can bind the wheel. This can lead to kickback, other reactive forces or a shattered composite cutting wheel, which could result in severe or fatal personal injury. See the section "Reactive Forces" in this manual. WARNING Use your cut-off machine for cutting only. It is not designed for prying, shoveling or moving any objects. Do not use abrasive cutting wheels for rough grinding using the sides of the wheel. Large bending stresses occur during such work, which may result in reactive forces, including kickback, or cause the wheel to shatter or break, resulting in serious or fatal injury. WARNING To reduce the risk of injury from damaged abrasive cutting wheels: 1. Do not use a wheel on your machine that has a rated operating speed lower than the maximum operating speed of you machine's spindle, as specified in this instruction manual. 2. Do not use a wheel that has been dropped or damaged. 3. Run each new wheel immediately after installation for approximately one minute at maximum speed without cutting, making sure to keep bystanders away. If the wheel wobbles or otherwise shows operational problems, do not use it. 4. Do not cut any material for which the wheel is not authorized. 5. Do not grind using the sides of the wheel. 6. Do not twist, thrust, knock or drop the machine. This can cause damage to the wheel. 7. Do not transport the cut-off machine with the cutting wheel mounted. To achieve a clean and efficient cut, maintain a firm grip and apply the cutting wheel to the workpiece, allowing the cutting wheel to engage the material naturally. Don't force or jam the cutting wheel into the workpiece. When cutting with the bottom of the abrasive wheel, the machine will have a natural tendency to move away from the operator. Slowly pulling the machine back through the cut or kerf toward the operator and then allowing it to move forward again will improve cutting performance. Insert the wheel into the material only as deep as necessary to make the cut. To reduce the amount of dust created, do not cut all the way through stone, concrete and similar materials - leave a thin layer of material uncut. This layer can be easily broken afterwards using a hammer or other appropriate tool. Always wear properly rated eye protection when breaking any uncut piece or layer. Do not cock, jam or wedge the wheel in the cut, as this may result in reactive forces or a damaged or broken wheel and the possibility of severe or fatal personal injury. Release the pressure on the cut-off machine as you reach the end of the cut. Too much pressure may cause the operator to lose control of the cut-off machine when the abrasive cutting wheel completes the cut. The abrasive cutting wheel may contact the operator or strike some foreign object and break or shatter. Always shut off the engine and be sure the wheel has stopped rotating before setting the cut-off machine down. If a cut-off machine cart is used, sweep debris from the path of the wheels, as debris under one of the cart's wheels may cause flexing of the abrasive wheel. This could result in high frictional forces and thus greatly reduce the engine power available for the actual cutting work. It could also damage the abrasive wheel. STIHL recommends the use of the cart for longer cuts in a straight line. Reactive Forces Including Kickback WARNING Reactive forces may occur at any time the cutting wheel on a cut-off machine is rotating. The powerful forces used to cut through a workpiece can be reversed and work against the operator. If the wheel is slowed or stopped sufficiently by frictional contact with any solid object or by a pinch or binding, reactive forces 14 TS 700, TS 800