Devices for Reducing the Risk of Kickback Injury

English

–must, in their original condition, meet a 45° computer derived kickback angle when equipped with certain cutting attachments,

–and must be equipped with at least two devices to reduce the risk of kickback injury, such as a chain brake, low kickback saw chain, reduced kickback bar, etc.

b)Chain saws with a displacement of 3.8 cubic inches (62 cm³) and above

–must be equipped with at least one device designed to reduce the risk of kickback injury, such as a chain brake, low kickback saw chain, reduced kickback bar, etc.

The computer derived angles for chain saws below 3.8 cubic inches (62 cm³) displacement are measured by applying a computer program to test results from a kickback test machine.

WARNING

The computer derived angles of the chain saw standard may bear no relationship to actual kickback bar rotation angles that may occur in real life cutting situations.

In addition, features designed to reduce kickback injuries may lose some of their effectiveness when they are no longer in their original condition, especially if they have been improperly maintained.

Compliance with the chain saw standard does not automatically mean that in a real life kickback the bar and saw chain will rotate at most 45°.

WARNING

In order for chain saws below 3.8 cubic inches (62 cm³) displacement to comply with the computed kickback angle requirements of the chain saw standard use only the following cutting attachments:

–bar and saw chain combinations listed as complying in the "Specifications" section of the instruction manual or

–other replacement bar and saw chain combinations marked in accordance with the standard for use on the chain saw or

–replacement saw chain designated "low kickback saw chain."

See the section on "Low kickback saw chain and reduced kickback bars."