Csa-Standard Z62.3-M1996 - Stihl MS 441 Instruction Manual

CSA-Standard Z62.3-M1996

CSA-Standard Z62.3-M1996 sets
certain performance and design criteria
related to chain saw kickback.
To comply with CSA Z62.3-M1996:
a. saws of class 1A and 2A shall, in
their original condition, not exceed
60° bar stop angle
b. saws of class 1B, 1C and 2C shall
not exceed 45° bar stop angle
In both cases the chain brake will be
activated when the kickback is
measured.
These kickback requirements do not
apply to chainsaws fitted with bow bars.
Bow bar equipped saws are only for use
by thoroughly instructed and
experienced operators. Use of bow bar
guides may result in serious or fatal
injury.
The computed kickback angles are
measured by applying a computer-
program to test results from a kickback
test machine.
!
Warning!
In order to comply with the computed
kickback angle requirements of
CSA Z62.3-M1996, use only the
following cutting attachments:
: a bar and chain combination as
listed in this leaflet on the following
page as complying
: other replacement saw chains for
use on specific powerheads or
: type A reduced kickback saw chain
or type C low kickback saw chain
MS 441
There are potential powerhead and bar
combinations with which reduced
kickback saw chains or low-kickback
saw chains can be used and which have
not been specifically tested for
compliance with the computer derived
kickback angle.
STIHL offers a variety of bars and
chains. STIHL reduced kickback bars
and low kickback chains are designed to
reduce the risk of kickback injury. Other
chains are designed to obtain higher
productivity or sharpening ease but may
result in a higher kickback tendency.
Please ask your STIHL dealer to
properly match your powerhead with the
appropriate bar/chain combinations to
reduce the risk of kickback injury. Low
kickback saw chains are recommended
for all powerheads. See the charts of this
STIHL Bar and Chain Information for
details.
!
Warning!
Use of other, non listed bar/chain
combinations may increase kickback
forces and increase the risk of kickback
injury. New bar/chain combinations may
be developed after publication of this
literature, which will, in combination with
certain powerheads, comply with
CSA Z62.3-M1996. Check with your
STIHL dealer for such new combination
updates.
Definition of the chainsaw
classes
Class 1A
A professional chainsaw with internal
combustion engine, intended for use in
forest operations by trained forestry
workers where the operator is expected
to use the chainsaw for extended
periods of time on a daily basis
Class 1B
A professional chainsaw with internal
combustion engine, limited to a
maximum engine displacement of
3
40 cm and intended for use by trained
tree service workers
Class 1C
A consumer chainsaw with internal
combustion engine, intended for general
use by home owners, cottagers,
campers, etc., and for such general
applications as clearing, pruning, cutting
firewood, etc.
Class 2A
An electric, professional chainsaw,
intended for use in forest operations by
trained forestry workers where the
operator is expected to use the chain
saw for extended periods of time on a
daily basis
Class 2C
An electric consumer chainsaw,
intended for general use by home
owners, cottagers, campers, etc., and
for such general applications as
clearing, pruning, cutting, firewood, etc.
English
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