0458-759-8221-C
8
English 
5 IMPORTANT SAFETY INSTRUCTIONS
5.4 Chain Saw
WARNING
■ The saw chain has many sharp cutters. Contacting the 
cutters may result in serious laceration injuries, even if the 
chain is not moving. To reduce the risk of such injuries:
– Keep hands, feet and other parts of your body away 
from the chain.
– Wear heavy-duty work gloves when handling the 
chain saw or its chain.
– Never touch a moving chain with your hand or any 
other part of your body.
– Cover the guide bar with a chain scabbard before 
transporting or storing the chain saw to reduce the 
risk of injury from inadvertent contact.
■ Reactive forces, including kickback, can be dangerous.
– Pay special attention to the section of this instruction 
manual on "Kickback and Other Reactive Forces," 
@ 6.
■ To reduce the risk of personal injury to the operator and 
bystanders:
– Always release the throttle trigger, engage the chain 
brake and shut off the engine before assembling, 
transporting, adjusting, inspecting, cleaning, 
servicing, maintaining or storing the chain saw.
– Shut off the chain saw anytime it is not in use.
■ To reduce the risk of fire and explosion:
– Only use the spark plug specified in this instruction 
manual and make sure it and the ignition lead are 
clean and in good condition.
– Always press the spark plug boot snugly onto the 
spark plug terminal of the proper size.
– Never test the ignition system with the spark plug 
boot removed from the spark plug or with a removed 
spark plug.
■ Although certain unauthorized attachments may fit your 
STIHL chain saw, their use may be extremely dangerous. 
Only attachments supplied by STIHL or expressly 
approved by STIHL for use with this specific model are 
recommended.
– Use only attachments supplied or expressly 
approved by STIHL.
– Never modify this chain saw in any way.
– Never attempt to modify or override the chain saw's 
controls or safety devices in any way.
– Never use a chain saw that has been modified or 
altered from its original design.
■ Any modification to your muffler or spark arresting screen 
could cause an increase in heat radiation, sparks or sound 
level, thereby increasing the risk of fire, burn injury or 
hearing loss. You may also permanently damage the 
engine.
– Never modify your muffler or spark arresting screen.
■ If the chain saw is dropped or subjected to similar heavy 
impacts:
– Check that it is undamaged, in good condition and 
functioning properly before continuing work. 
– Check that the fuel system is tight and has no leaks.
– Check that the controls and safety devices, including 
the chain brake, are working properly, @ 16.
– Never work with a damaged or malfunctioning chain 
saw. In case of doubt, have the chain saw checked 
by your authorized STIHL servicing dealer.
■ Genuine STIHL replacement parts are specifically 
designed to match your chain saw and meet safety and 
performance requirements. Use of parts that are not 
authorized or approved by STIHL may cause serious or 
fatal injury or property damage.
– STIHL recommends that only identical STIHL 
replacement parts be used.