SR 430, SR 450
English
12
Pay attention to the direction of the wind, 
i.e., do not work against the wind. When 
spraying, stand so that the wind does 
not blow towards you or bystanders.
Keep children and pets away from areas 
that have just been sprayed. After the 
use of some chemicals, especially 
agricultural pesticides, a notice must be 
posted on the treated area that a 
"Restricted Entry Interval" (REI) is in 
effect. See the product’s label and any 
applicable governmental regulations.
DANGER
WARNING
To reduce the risk of personal injury, do 
not direct air blast towards bystanders, 
since the high pressure of the air flow 
could injure eyes and could blow small 
objects at great speed.
WARNING
The blower fan between the air intake 
and output openings rotates whenever 
the engine is running.
Never insert any foreign object into the 
air intake of the machine or into the 
nozzle of the blower. It will damage the 
fan wheel and may cause serious injury 
to the operator or bystanders as a result 
of the object or broken parts being 
thrown out at high speed.
Do not place the blower on the ground 
when operating at high speed, because 
small objects such as sand, grass, dust, 
etc. may be pulled into the air intake and 
damage the fan wheel.
WARNING
Never modify your muffler. Any 
modification 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. Have 
your muffler serviced and repaired by 
your STIHL servicing dealer only.
WARNING
The muffler and other parts of the engine 
(e.g. fins of the cylinder, spark plug) 
become hot during operation and remain 
hot for a while after stopping the engine. 
To reduce risk of burns, do not touch the 
muffler and other parts while they are 
hot. Keep the area around the muffler 
clean. Remove excess lubricant and all 
debris such as pine needles, branches 
or leaves. Let the engine cool down 
sitting on concrete, metal, bare ground 
or solid wood away from any 
combustible substances.
WARNING
An improperly mounted or damaged 
cylinder housing or a 
damaged/deformed muffler shell may 
interfere with the cooling process of the 
muffler. To reduce the risk of fire or burn 
injury, do not continue work with a 
damaged or improperly mounted 
cylinder housing or a 
damaged/deformed muffler shell.
Your muffler is furnished with a spark 
arresting screen designed to reduce the 
risk of fire from the emission of hot 
particles. Never operate your unit with a 
missing or damaged spark arresting 
screen. If your gas/oil mix ratio is correct 
(i.e., not too rich), this screen will 
normally stay clean as a result of the 
heat from the muffler and need no 
service or maintenance. If you 
experience loss of performance and you 
suspect a clogged screen, have your 
muffler maintained by a STIHL servicing 
dealer. Some state or federal laws or 
regulations may require a properly 
maintained spark arrestor for certain 
uses. See the "Maintenance, Repair and 
Storing" section of these Safety 
Precautions. Remember that the risk of 
a brush or forest fire is greater in hot or 
dry conditions.
Your power tool is not 
insulated against electric 
shock. To reduce the risk 
of electrocution, never 
operate this power tool in 
the vicinity of any wires or 
cables (power, etc.) 
which may be carrying 
electric current. Do not 
spray on or near electri-
cal installations.