Husqvarna 455 Rancher II Workshop Manual page 7

2 Introduction and safety regulations
2.1 General
This Workshop Manual provides a comprehensive
description of how to trouble shoot, repair and
test the chain saw. A description of different safety
steps that must be taken during repair work is also
given.
2.2 Safety
Note: The section dealing with safety must be
read and understood by all those carrying out
repair work or service on the chain saw.
Warning symbols can be found in this Workshop
Manual and on the chain saw. See "Symbols on
the saw" and "Symbols in the Workshop Manual".
A new warning symbol decal must be applied as
soon as possible if a warning symbol on the chain
saw has been damaged or is missing so that the
greatest level of safety can be maintained when
using the chain saw.
2.3 Target group
This Workshop Manual is written for personnel with
general knowledge about the repair and service of
chain saws.
The Workshop Manual must be read and
understood by personnel who will carry out repair
work and service on the chain saw. The Manual is
also suitable for use when training new employees.
2.4 Changes
Any modifications to the chain saw will be
gradually introduced into ongoing production. As
these modifications affect service and/or spare
parts, specific service information will be sent out
on each occasion. This means that in time this
Workshop Manual will become out of date. In order
to prevent this, the Manual should be read together
with all service information concerning the chain
saw in question.
2.5 Tools
Special tools are required for some stages. All
service tools are listed in the Workshop Manual.
Usage is made apparent in each section.
Always use original Husqvarna:
• Spare parts
• Service tools
• Accessories
Introduction and safety instructions
2.6 Structure
This Workshop Manual can be used in two different
ways:
• For the repair of a particular system on the
chain saw.
• Dismantling and assembly of the entire chain
saw.
Repair of a specific system
When a particular system on the chain saw is to be
repaired, proceed as follows:
1. Look up the page for the system in question.
2. Carry out the following steps:
Disassembly
Cleaning and inspection
Assembly
Dismantling and assembling the chain saw
When taking apart the whole chain saw and putting
it back together again, do as follows:
1. See the "Repair instructions" chapter —
which deals with the Starter — and carry
out the instructions listed under the heading
Dismantling.
2. Work forward in the Manual and carry out
Dismantling in the order set out in the
sections.
3. Go back to Starter and carry out the
instructions under Cleaning and inspection.
4. Work forward in the Manual and carry out
Cleaning and inspection in the order set out
in the sections.
5. Order or collect all requisite spare parts from
the stores.
6. See the "Repair instructions" chapter which
deals with the Crankcase and carry out the
instructions outlined in Assembly.
7. Work backward in the Manual and carry out
Assembly in the order set out in the sections.
Some sections include a Description of the actual
unit in order to increase basic understanding.
2.7 Numbering
Position references to components in the figures
are designated A, B, etc.
The figures are numbered 1, 2 etc.
The position references and figure numbers restart
in each new section.
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