Stihl 009 Instruction Manual - Page 15

of ANSI standard B 175.1

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It may also occur during limbing. The greater the force of the kickback reaction, the more difficult it becomes for the operator to control the saw. Many factors influence the occurrence and force of the kickback reaction. These include chain speed, the speed at which the bar and chain contact the object, the angle of contact, the condition of the chain and other factors. The type of bar and saw chain you use is an important factor in the occurrence and force of the kickback reaction. Some STIHL bar and chain types are designed to reduce kickback forces. STIHL recommends the use of reduced kickback bars and low kickback chains. Section 5.11 of ANSI standard B 175.1- 2000, sets certain performance and design criteria related to chainsaw kickback. To comply with section 5.11 of ANSI B 175.1-2000: a) saws with a displacement of less than angles that may occur in real life cutting 3.8 cubic inches situations. - must, in their original condition, In addition, features designed to reduce meet a 45° computer derived kickback injuries may lose some of their kickback angle when equipped with effectiveness when they are no longer in certain cutting attachments. their original condition, especially if they - and must be equipped with at least have been improperly maintained. two devices to reduce the risk of Compliance with § 5.11 of kickback injury, such as a chain ANSI B 175.1-2000 does not automatic- brake, low kickback chain, reduced ally mean that in a real life kickback the kickback bar, etc. bar and chain will rotate at most 45°. b) saws with a displacement of 3.8 cubic inches 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. inch displacement to comply with the computed kickback angle requirements of § 5.11 of ANSI B 175.1-2000 use only the following cutting attachments: The computer derived angles for saws below 3.8 cubic inch displacement are measured by applying a computer program to test results from a kickback test machine. The computer derived angles of § 5.11 of ANSI B 175.1-2000 may bear no relationship to actual kickback bar rotation - 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"

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It may also occur during limbing.
The greater the force of the kickback
reaction, the more difficult it becomes for
the operator to control the saw. Many
factors influence the occurrence and
force of the kickback reaction. These
include chain speed, the speed at which
the bar and chain contact the object, the
angle of contact, the condition of the
chain and other factors.
The type of bar and saw chain you use
is an important factor in the occurrence
and force of the kickback reaction.
Some STIHL bar and chain types are
designed to reduce kickback forces.
STIHL recommends the use of reduced
kickback bars and low kickback chains.
$16,²%²»·´¾»¿»ºº»²FKDLQVDZ²NLFNEDFN
VWDQGDUG
Section 5.11 of ANSI standard B 175.1–
2000, sets certain performance and
design criteria related to chainsaw
kickback.
To comply with section 5.11 of ANSI B
175.1-2000:
a)
saws with a displacement of less than
3.8 cubic inches
–
must, in their original condition,
In addition, features designed to reduce
meet a 45° computer derived
kickback injuries may lose some of their
kickback angle when equipped with
effectiveness when they are no longer in
certain cutting attachments.
their original condition, especially if they
–
and must be equipped with at least
have been improperly maintained.
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 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 displacement are
measured by applying a computer
program to test results from a kickback
test machine.
±
:DUQLQJ±
The computer derived angles of § 5.11 of
ANSI B 175.1-2000 may bear no rela-
tionship 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 automatic-
ally mean that in a real life kickback the
bar and chain will rotate at most 45°.
±
:DUQLQJ±
inch 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"
»À