Stihl GS 461 Rock Boss174 Product Instruction Manual - Page 15

002BA146 KN 2411BA003 KN 1. Hold the concrete cutter machine firmly with both hands. 2. Maintain good balance and footing at all times. Never cut while standing on a ladder or other insecure support. Be alert to potential movement of the workpiece or anything else that could cause the cut to close and pinch the chain. In order to reduce the risk of pinching, support the workpiece in such a way that the cut remains open during the cutting process and when the cut is finished (see illustration.) Never make a cut that results in a binding of the chain. WARNING Be particularly alert when cutting a workpiece such as a pipe with a belled end or a pipe in a trench that, if not properly supported, can sag upon completion of the cut, creating a pinch not where you are actually cutting but, rather, at or near the top of the workpiece. WARNING Always use wet-cutting, since the water can act as a lubricant in a pinch situation and thus reduce the likelihood of reactive forces occurring and the energy of any such forces that do occur, making it easier to maintain control of the machine. WARNING To reduce the risk of injury from loss of control from reactive forces: 3. Position the concrete cutter in such a way that your body is clear of the cutting attachment. Avoid standing in direct line with the chain (See illustration.) Never bend over the cutting attachment. 4. Do not cut above shoulder height. 5. Only STIHL branded parts and cutting attachments expressly approved by STIHL for use with the specific STIHL concrete cutter model are recommended. Although certain other parts or attachments may be useable with the STIHL powerhead, their use may, in fact, be extremely dangerous. 6. Do not cut wood or any other material for which the diamond abrasive chain is not authorized. 7. Begin cutting and continue at full throttle. 8. Do not overreach. 9. Never sideload a chain in the kerf. English 10. Use your concrete cutter for cutting only. It is not designed for prying or shoveling away any objects. 11. Be especially alert for reactive forces, when cutting with the front and upper quadrant of the chain. 12. Be alert to shifting of the workpiece or anything that could cause the cut to close and pinch the chain, especially in the upper quadrant. Support the workpiece in such a way that the cut remains open. Never make a cut that results in a binding of the chain. 13. Always use wet-cutting. In a pinch situation the water can act as a lubricant and reduce the energy of reactive forces. 14. Release any pressure on the concrete cutter as you reach the end of the cut. Too much pressure may cause the operator to lose control of the concrete cutter when the diamond abrasive chain completes the cut. The chain may contact the operator or strike some foreign object and break. 15. Use extreme caution when reentering a cut and do not turn the chain at an angle or push the chain into the cut as this may result in a binding of the chain. MAINTENANCE, REPAIR AND STORING Maintenance, replacement, or repair of the emission control devices and systems may be performed by any nonroad engine repair establishment or individual. However, if you make a GS 461 13