Stihl BR 450, Instruction Manual

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Contents
1 Guide to Using this Manual.........................2
2 Safety Precautions and Working Techni‐
ques............................................................ 2
3 Assembling the Unit.................................... 7
4 Adjusting the Throttle Cable........................9
5 Fitting the Harness......................................9
6 Fuel............................................................. 9
7 Fueling...................................................... 10
8 Information Before You Start.................... 11
9 Starting / Stopping the Engine.................. 11
10 Operating Instructions...............................14
11 Replacing the Air Filter..............................14
12 Adjusting the Carburetor........................... 15
13 Spark Plug................................................ 16
14 Engine Running Behavior......................... 16
15 Storing the Machine.................................. 16
16 Inspections and Maintenance by Dealer...17
17 Maintenance and Care..............................17
18 Minimize Wear and Avoid Damage...........18
19 Main Parts.................................................19
20 Specifications............................................20
21 Maintenance and Repairs......................... 21
22 Disposal.................................................... 21
23 EC Declaration of Conformity................... 21
Dear Customer,
Thank you for choosing a quality engineered
STIHL product.
It has been built using modern production techni‐
ques and comprehensive quality assurance.
Every effort has been made to ensure your satis‐
faction and trouble-free use of the product.
Please contact your dealer or our sales company
if you have any queries concerning this product.
Your
Dr. Nikolas Stihl
1 Guide to Using this Manual
1.1 Symbols in text
WARNING
Warning where there is a risk of an accident or
personal injury or serious damage to property.
NOTICE
Caution where there is a risk of damaging the
machine or its individual components.
1.2 Engineering improvements
STIHL's philosophy is to continually improve all
of its products. For this reason we may modify
the design, engineering and appearance of our
products periodically.
Therefore, some changes, modifications and
improvements may not be covered in this man‐
ual.
1.3 Pictograms
The meanings of the pictograms attached to the
machine are explained in this manual.
Depending on the model concerned, the follow‐
ing pictograms may be attached to your
machine.
Fuel tank; fuel mixture of gasoline
and engine oil
Operate manual fuel pump
Operate electric starter
2 Safety Precautions and
Working Techniques
Special safety precautions must be
observed when working with a power
tool.
English
2 0458-391-8321-B
© ANDREAS STIHL AG & Co. KG 2022 0458-391-8321-B. VA0.D22.
Printed on chlorine-free paper Printing inks contain vegetable oils, paper can be recycled.
Original Instruction Manual 0000007158_008_GB