Cutting chain can cause injury if incorrectly fitted to a chain saw or if the saw is used improperly. Install, adjust and maintain the chain as recommended. Beware of kickback, particularly when cutting with the bar nose. Kickback can lead to dangerous loss of control of the chainsaw and result in serious injury to the saw operator or bystanders. Before using any chain saw, thoroughly read the manufacturer's operating and safety instructions.
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Bar nose kickback is one of the more common causes of serious chain saw injury accidents. The Technical Services Department of Oregon®, Blount Inc. offers a free safety seminar program to our customers in the United States. If your organization uses chain saws, and if safety for your people is a high priority, look into our Service School Program.
Kickback may occur when the moving chain at the nose or tip of the guide bar touches an object, or when the wood closes in and pinches the saw chain in the cut. Tip or bar nose contact can, in some cases, cause a lightning-fast reverse reaction, kicking the guide bar up and back toward the operator. Pinching the cutting chain along the top of the guide bar may push the guide bar rapidly toward the operator. Either of these reactions may cause you to lose control of the saw, which could result in serious personal injury to yourself or to bystanders.
The top of the tip of the chain saw guide bar is known as the KICKBACK DANGER ZONE. When contact is made with an object such as a branch or a log, there is a danger of a sudden bar nose kickback reaction.
Modern chain saws are equipped with a variety of devices intended to reduce the risk of injury from kickback or from other causes. Among these are the chain brake, the front (left) hand guard, the bar tip guard and low or reduced kickback saw chain and guide bars. To assure the protection afforded by these devices is maintained, it is important your chain saw is properly and fully assembled, and that all components are securely attached and functional.
No matter how your saw is equipped, Oregon, Blount Inc. recommends that low-kickback chain be used on all saws unless you have experience and special training for dealing with kickback. Ask your chain saw dealer for Oregon low-kickback chain meeting ANSI requirements of standard B175.1.
Before using any chain saw, thoroughly read the manufacturer's operating and safety instructions.