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dicate more angle and higher kick energies.
Computed angles represented indicate total
energy and angle associated without activation
of the chain brake during kickback. Activated
angle represents chain stopping 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 environment
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
and chain 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
CHAIN P/N
18″
MODEL
CKA without chain brake
SM4218AVX
33_
952051338952044689
NOTE: Ifthissawistobeusedforcom-
mercial logging, a chain brake is required
and shall not be removed o r otherwise dis-
abled tocomply with Federal OSHA Regula-
tions for Commercial Logging.
WARNING: The engine exhaust
from this product contains chemicals known
to the State of California to cause cancer,
birth defects or other reproductive harm.
SAFETY NOTICE: Exposure 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 cold
weather has bee n linked to blood vessel
damage in otherwise healthy people. If
symptoms occur such as numbness, pain,
loss of strength, change in skincolor or t exture,
or loss of feeling in the fingers, hands, or joints,
discontinue the use of this tool and seek
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 condition and the
condition of this tool.
SPECIAL N OTICE: Your saw is equipped
with a temperature limiting muf fler and spark
arresting screen which meets t he
requirements of California Codes 4442 and
4443. All U.S. forest land and the states of
California, I daho, Maine, M innesota, New
Jersey, Oregon, and Washington require by
law that many internal combustion engines to
be equipped with a spark arresting screen. 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 SERVICE
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 covered in this
manual, use care and good judgement. If you
need assistance, contact your authorized
service dealer or call 1-800--554--6723.
STANDARDS: This saw is listed by Under-
writer’s Laboratories, Inc., in a ccordance with:
ANSI B175.1--2000 American National
Standards for Gasoline--Powered Chain
Saws -- Safety Requirements
CSA Z62.1--03 Chain Saws -- Occupational
Health and Safety
CSA Z62.3--96 Chain Saw Kickback Occu-
pational Health and Safety
ASSEMBLY
Protective gloves (not provided) should be
worn durin g assembly.
ATTACHING THE BAR & CHAIN (If
not already attached)
WARNING: If re ceive d assemb led,
repeat all steps to ensure your saw is properly
assembled and all fasteners are secure. Al-
ways wear gloves when handling the chain.
The chain is sharp and can cut you even when
it is not m oving!
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).