Stihl MS 462 Rescue Instruction Manual - Page 28

English 7 Emergency Situations 7.1 Using the Chain Saw in Emergency Situations WARNING ￭ The use of this saw for rescue operations, even by trained personel, can be extremely hazardous and may result in severe or fatal personal injury. The risk of injury from reactive forces, fire or explosion, electrocution, damaged chain and other causes when employing a chainsaw for these purposes is substantially increased. ￭ Cutting any materials other than wood will decrease the service life of the chain and may cause irreversible damage to it, requiring replacement before work with the saw can be continued. ￭ Unlike a conventional chain saw, however, this Rescue Saw may also be used in an emergency situation to cut through materials other than wood - but only if it is equipped with the carbide-tipped saw chain specially authorized by STIHL for this purpose. Generally, the specially designed and hardened cutters of such a saw chain can penetrate most wooden doors (even if nails are encountered), thin metal sheets, glass (e.g., train windows), insulating materials, as well as frame, stucco and even some lightweight masonry walls. ￭ When making a forced entry through a wall, be aware of the possibility of encountering electrical wiring and pipes. Cutting into such objects will increase the risk of serious or fatal injury from electrocution, fire and/or explosion. To the extent possible, make sure no live electrical wires or pipes carrying flammable or toxic substances are in or on the other side of the wall you intend to cut. Follow all applicable rules and guidelines in this regard. ￭ The extraordinary cutting capabilities of the STIHL carbide-tipped rescue saw chain may result in higher vibration levels. Consequently, a STIHL Rescue Saw equipped with rescue saw chain should be limited to occasional use only, i.e. short emergency and rescue cutting operations (max. 2 tank fillings daily). If daylong use for woodcutting is anticipated, such as clearing 7 Emergency Situations windfalls, natural disasters, etc., replace the carbidetipped rescue saw chain with a normal woodcutting saw chain as listed in this manual, which reduces vibrations to a level that allows for such extended chain saw operation. Roof-Venting Fire and rescue departments in North America frequently engage in the practice of "roof-venting" structures involved in fires to help evacuate penned-up heat and smoke by sawing vent openings into the top layer of a building. Roofventing usually means physically placing one or more fire fighters on or near the roof of a structure, that may still be burning and forcing openings either manually or with a chain saw. There are several ways to make such an opening, but many, if not most, run counter to standard safe and sound operating principles for handheld power equipment, primarily due to insecure footing. Depth Limiter The depth limiter is intended for the use only on the STIHL MS 462 C-M R Rescue Saw for fire and rescue operations by specially trained personnel. The cutting depth or plunge depth of the cutting attachment can be set by means of a sliding metal sleeve that is movable within a preset range along a specially prepared guide bar. Its sole purpose is to limit the depth of entry into material, which may be useful to fire and rescue personnel when cutting into walls, etc. It is not designed to protect the operator from saw chain contact. The additional weight of the depth limiter will make the chain saw more nose-heavy.For mounting instructions,@ 11.4.1. 8 Proper Techniques for Basic Bucking, Limbing, Pruning and Felling 8.1 Bucking Bucking is cutting a log into sections. 26 0458-787-8621-A