Stihl OILOMATIC Manual page 5

Powerheads
: STIHL powerheads with a
displacement of less than 3.8
cubic inches are marked with a
green warning label on the inside
of the front hand guard.
: STIHL powerheads with a
displacement of 3.8 cubic inches
and above are marked with a
green and yellow warning label
on the inside of the front hand
guard.
Saw chains
Saw chains are classified in the
standard into three basic
categories:
a. low kickback chain,
b. reduced kickback chain, and
c. saw chain not meeting specific
criteria.
STIHL, however, divides its chains
into only two categories:
: low kickback chains and
: chains other than low kickback
chains.
"low kickback chain" is a chain
which has met the kickback
performance requirements of
§ 5.11.2.4 of ANSI B 175.1-2011
when tested on a specified sample
of chain saws below 3.8 cubic inch
displacement.
4
!
Warning !
There are potential powerhead
and bar combinations with which
low kickback saw chains can be
used which have not been
specifically certified to comply
with the 45° computer-derived
kickback angle of § 5.11 of ANSI
B 175.1-2011. Some low kickback
chains have not been tested with
all powerhead and bar
combinations.
STIHL low kickback chains are
marked with a green color code.
All other STIHL chains are coded
yellow.
The chain loop boxes and the reel
chain cores are color coded on the
label. The chain loops incorporate a
color-coded tie strap.
Green color-coded STIHL chains
are (as of December 2010) only the
following:
: 71 PM3 for 1/4" extended pitch
: 61 PMM3, 63 PM3, 63 PS3, 63
PD3 for 3/8" extended pitch
: 23 RM3, 25 RM3, 26 RM3,
23 RD3, 25 RD3, 26 RD3 for
.325" pitch
: 33 RS3, 36 RS3; 33 RM3,
36 RM3 for 3/8" pitch
STIHL offers a variety of bars and
chains. STIHL low kickback chains
are designed to reduce the risk of
kickback injury. Other chains are
designed to obtain higher cutting
efficiency or sharpening ease but
may result in higher kickback
tendency.
Chains Other Than
Low kickback Chains
!
Warning !
This chain is capable of severe
kickback which may cause
serious or fatal injury. Only for
users with extraordinary cutting
needs and experience and
specialized training for dealing
with kickback. STIHL chains with
reduced kickback potential are
available. In order to comply with
section § 5.11.2.1 of ANSI B
175.1-2011, powerheads below
3.8 cubic inch must be equipped
with green labeled STIHL low
kickback chain or other available
complying low kickback chain or
other available complying low
kickback components. STIHL
recommends its low kickback
(green labeled) chains for use on
all powerheads.
!
Warning !
This chain should only be used
with kickback reducing devices
such as a properly functioning
chain brake.
Guide bars:
STIHL reduced kickback bars are
designed to reduce the risk of
kickback injury when used with
STIHL green labeled low kickback
chains. They are marked with a
green color code. All other STIHL
bars are coded yellow.
This marking includes a color-coded
warning label on the packaging of
the bar and a colored dot on the bar
itself near the bar mounting area.
Chain and Bar Manual