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1
BR 420
English
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©
AN
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STI
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L AG
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STIHl
Contents
Guide to Using this Manual .............. 2
Safety Precautions and
Working Techniques ......................... 3
Assembling the Blower ..................... 9
Fuel ................................................ 11
Fueling ............................................ 12
Information Before You Start .......... 13
Starting / Stopping the Engine ........ 13
Operating Instructions .................... 16
Cleaning the Air Filter ..................... 16
Adjusting the Carburetor ................ 17
Catalytic Converter ......................... 19
Checking the Spark Plug ................ 19
Engine Running Behavior ............... 20
Spark Arresting Screen
in Muffler ......................................... 20
Replacing Starter Rope and
Rewind Spring ................................ 21
Storing the Machine ........................ 24
Maintenance Chart ......................... 25
Minimize Wear and
Avoid Damage ................................ 26
Parts and Controls .......................... 27
Specifications ................................. 28
Special Accessories ....................... 29
Maintenance and Repairs ............... 29
Certificate of Conformity ................. 30
Quality Certification ........................ 30
Dear Customer,
Thank you for choosing a quality
engineered STIHL product.
This machine has been built using
modern production techniques and
comprehensive quality assurance.
Every effort has been made to ensure
your satisfaction and troublefree use
of the machine.
Please contact your dealer or our
sales company if you have any
queries concerning your machine.
Hans Peter Stihl