Table Of Contents; Guide To Using This Manual; Safety Precautions And Working Techniques - Stihl SR 420 Instruction Manual

English
Contents
1 Guide to Using this Manual......................... 2
2 Safety Precautions and Working Techni-
ques............................................................ 2
3 Assembling the Unit.................................... 8
4 Harness.......................................................9
5 Fuel........................................................... 10
6 Fueling...................................................... 11
7 Information Before You Start.................... 12
8 Starting / Stopping the Engine.................. 12
9 Calculating Required Quantity of Solution
.................................................................. 14
10 Metering Unit.............................................15
11 Filling the Container.................................. 16
12 Mistblowing............................................... 17
13 Cleaning the Air Filter............................... 17
14 Adjusting the Carburetor........................... 18
15 Spark Arresting Screen in Muffler............. 19
16 Spark Plug................................................ 20
17 Storing the Machine.................................. 20
18 Maintenance and Care..............................21
19 Minimize Wear and Avoid Damage...........22
20 Parts Subject to Wear and Tear................22
21 Main Parts.................................................23
22 Specifications............................................23
23 Maintenance and Repairs......................... 24
24 Disposal.................................................... 24
25 EC Declaration of Conformity................... 24
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 Pictograms
All the pictograms attached to the machine are
shown and explained in this manual.
2
1.2 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.
1.3 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.
2 Safety Precautions and
Working Techniques
Special safety precautions must be
observed when working with the
power tool.
It is important that you read and
understand the User Manual before
commissioning and keep it in a safe
place for future reference. Non-com-
pliance with the User Manual may
cause serious or even fatal injury.
Observe all applicable local safety regulations,
e.g. by trade organizations, social insurance
institutions, labor safety authorities etc.
If you have not used this machine before: Have
your dealer or other experienced user show you
how to handle your machine safely or attend a
specialist course.
Minors must never work with the machine -
except for young people over the age of 16 who
are being trained under supervision.
Children, animals and onlookers must not be
allowed near the machine.
When the machine is not in use, put it in a place
where it does not endanger others. Secure the
machine against unauthorized access.
The user is responsible for accidents or risks
involving third parties or their property.
0458-372-0121-C