English / USA

a)saws with a displacement of less than 3.8 cubic inches (62 cm³).

–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 chain, reduced kickback bar, etc.

b)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 chain, reduced kickback bar, etc.

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

!Warning!

The computer derived angles of § 5.11 of ANSI B 175.1-2000 may bear no relationship to actual kickback bar rotation

angles that may occur in real life cutting situations. Compliance with § 5.11 of ANSI B 175.1-2000 does not automatically mean that in a real life kickback the bar and chain will rotate at most 45°.

!Warning!

In order for powerheads below 3.8 cubic inch (62 cm³) displacement to comply with the computed kickback angle requirements of § 5.11 of ANSI B 175.1- 2000 use only the following cutting attachments:

–bar and chain combinations listed as complying in the "Specifications" section of the Owner's Manual or

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

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

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

Devices for reducing the risk of kickback injury

STIHL recommends the use of the STIHL Quickstop chain brake on your power-head with green labeled reduced kickback bars and low kickback chains.

!Warning!

To reduce the risk of injury, stop using the saw immediately if the chain brake does not function properly. Take the saw to your local STIHL Service Center! Do not use the saw until the problem has been rectified (see the section "Chain Brake").

Quickstop chain brake

STIHL has developed a chain stopping system designed to reduce the risk of injury in certain kickback situations. It is called a Quickstop chain brake. The Quickstop is available as standard equipment on your STIHL chainsaw and is available for installation on most older STIHL saws. Ask your dealer to retrofit your older model saw with a chain brake.

MS 440, MS 440 W, MS 440 C

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