Introduction - Stihl 4180 Series Manual

1.

Introduction

This service manual contains
detailed descriptions of all the repair
and servicing procedures specific to
this powerhead.
You should make use of the
illustrated parts lists while carrying
out repair work. They show the
installed positions of the individual
components and assemblies.
Refer to the latest edition of the
relevant parts lists to check the part
numbers of any replacement parts.
Refer to the "Technical Information"
bulletins for engineering changes
which have been introduced since
publication of this service manual.
Technical information bulletins also
supplement the parts list until a
revised edition is issued.
The special tools mentioned in the
descriptions are listed in the last
chapter of this manual. Use the part
numbers to identify the tools in the
"STIHL Special Tools" manual.
2
Symbols are included in the text and
pictures for greater clarity.
The meanings are as follows:
In the descriptions:
: = Action to be taken that is
shown in the illustration
(above the text)
– = Action to be taken that is
not shown in the illustration
(above the text)
b 4.2 = Reference to another
chapter, i.e. chapter 4.2 in this
example
+= Situation applies from
serial No.
*= Situation applies up to
serial No.
In the illustrations:
A Pointer (short arrow)
aDirection of movement
Service manuals and all technical
information bulletins are intended
exclusively for the use of properly
equipped repair shops. They must
not be passed to third parties.
1
2
Servicing and repairs are made
considerably easier if the
powerhead is mounted on assembly
stand (2) 5910 890 3100 with the
aid of clamp (1) 5910 890 8800.
The powerhead can then be
swivelled to the best position for the
ongoing repair. This leaves both
hands free.
Always use original STIHL
replacement parts.
They can be identified by the
STIHL part number,
the { logo and the
STIHL parts symbol (
This symbol may appear alone on
small parts.
Series 4180 Powerhead