6
dicate more angle and higher kick energies .
Computed angles represented indicate total
energyand angle as sociated without activation
of the chain brake during kick back. Activated
anglerepresents chain s topping time relative to
activation angle of chain break and resulting
kick angle of saw. In all cases lower CKA val-
ues represent a safer operating envi ronment
for the user.
The following guide bar and chain combina-
tions meet kickback requirements of CSA
Standards Z62.1, Z62.3, & ANSI B175.1 when
used on saws listed in this manual. Use of bar
andc hain combinations other than those listed
is not recommended and may not meet the
CKA requirements per standard.
Computed kickback angle (CKA ) Table
BAR
P/N Length CHAINP/N
18″
MODEL CKA withoutchain brake
SM4218AVX 33_
952051338952044689
NOTE: Ifthissawistobeusedforcom-
mercial logging, a chain brake is required
and shall not be removed or otherwise dis -
abledto comply with Federal OS HA Regula-
tions for Commercial Logging.
WARNING: The engine exhaus t
fromthis product contains chemic alsk nown
to the State of California to cause cancer,
birth defects or other reproductive harm.
SAFETYNOTICE: Exposu re to vibrations
through prolonged use of gasoline powered
hand tools could cause blood vessel or nerve
damage in the fingers, hands, and joints of
people prone to circulation disorders or
abnormal swellings. Prolonged use in c old
weather has been linked to blood vessel
damage in otherwise healthy people. If
symptoms occur such as numbness, pain,
loss of strength, change in skin color or texture,
orlos s of feeling in the fingers, hands , or joints,
discontinue the use of this tool and se ek
medical attention. An anti-vibration system
does not guarantee the avoidance of these
problems. Users who operate power tools on
a continual and regular basis must monitor
closely their physical co ndition and the
condition of this tool.
SPECIALNOTICE: Your saw is equipped
with a temperature limiting muffler and spark
arresting screen which meets the
requirements of California Codes 4442 and
4443. All U.S. forest land and the states of
California, Idaho, Maine, Minnesota, New
Jersey, Oregon, and Washington require by
law that many internal combustion engines to
be equipped with a spark arresting sc reen. If
you operate a chain saw in a state or locale
where such regulations exist, you are legally
responsible for maintaining the operating
condition of these parts. Failure to do so is a
violation of the law. Refer to the SERVI CE
section for maintenance of the spark arresting
screen. Failure to follow all Safety Rules and
Precautions can result in serious injury. If
situations occur which are not cover ed inthis
manual, use care and good judgement. If you
need assistance, contact y our authorized
service dealer or call 1-800--554--6723.
STANDARDS: Thissaw is listed by Under-
writer’s Laboratories, Inc., in accordanc ew ith:
ANSI B175.1--2000 American National
Standards for Gasoline--Powered Chain
Saws --Safety Requirements
CSA Z62.1--03Chain Saws --Occupational
Health and Safety
CSA Z62.3--96Chain Saw Kickback Occu-
pational Health and Safety
ASSEMBLYProtective gloves (not provided) should be
worn during assembly.
ATTACHINGTHE BAR & CHAIN (If
not already attached)
WARNING: If received assembled,
repeat all steps to ensure yoursaw is properly
assembled and all fasteners are sec ure. Al-
ways wear gloves when handling the c hain.
Thechain is shar p and can cut you ev en when
it is not moving!
1. Move ON/STOP switch to the STOP
position.
2. Loosen and remove bar knob complete-
ly by lifting lever and turning counter-
clockwise.
LOOSEN
3. Remove clutch cover and plastic ship-
ping spacer (if present).