1BR 340, BR 340 L, BR 420, BR 420 C
English / USA
Printing inks contain vegetable oils;
paper can be recycled.
Printed on chlorine-free paper.© ANDREAS STIHL AG & Co. KG, 2003
0458 373 3021 B. M6. K3. CP. Printed in USA
STIHl
Contents
Guide to Using this Manual .............. 2
Safety Precautions ........................... 3
Assembling the Blower ................... 11
Fuel ................................................ 13
Fueling ............................................ 14
Information
Before You Start ............................. 15
Starting / Stopping
the Engine ...................................... 15
Operating Instructions .................... 18
Using the Blower ............................ 18
Cleaning the Air Filter ..................... 19
Motor Management ........................ 20
Carburetor ...................................... 21
Catalytic Converter* ........................ 22
Checking the Spark Plug ................ 22
Spark Arresting Screen*
in Muffler ......................................... 23
Engine Running Behavior ............... 24
Replacing Starter Rope
and Rewind Spring ......................... 24
Storing the Machine ........................ 27
Maintenance Chart ......................... 28
Parts and Controls .......................... 29
Specifications ................................. 31
Special Accessories ....................... 32
Maintenance and Repairs ............... 32
STIHL Incorporated Federal
and California Emission Control
Warranty Statement ........................ 33
* see “Guide to Using this Manual”
Allow only persons who understand this
Manual to operate your blower.
To receive maximum performance and
satisfaction from your STIHL blower, it is
important that you read and understand
the maintenance and safety precautions,
starting on page 3, before using your
blower.
Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in this
Manual.
!Warning!
Because a blower is a high-speed tool,
some special safety precautions must
be observed as with any other power
tool to reduce the risk of personal injury.
Careless or improper use may cause
serious or even fatal injury.
STIHL's philosophy is to continually
improve all of its products. As a result,
engineering changes and improvements
are made from time-to-time. If the
operating characteristics or the
appearance of your blower differs from
those described in this Manual, please
contact your STIHL dealer for
information and assistance.
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