Workshop manual
101 90 61-26
, CONTENTS
Introduction ................................................. 1
Safety regulations ....................................... 2
Symbols ....................................................... 3
Technical data.............................................. 4
Service tools ................................................ 6
Trouble shooting ......................................... 8
Service information ................................... 10
Safety equipment ...................................... 12
Recoil starter ............................................. 16
Electrical system ....................................... 18
Centrifugal clutch ...................................... 22
Lubrication system ................................... 24
Carburettor ................................................ 26
Tank unit..................................................... 35
Anti-vibration system ............................... 37
Piston and cylinder ................................... 38
Crankcase and crankshaft ....................... 42
, INTRODUCTION
General Arrangement
This manual provides a detailed description of procedures This workshop manual can be used in two different ways:
for trouble shooting, repair and testing of the chainsaw. The
safety precautions that should be taken during repair work • Repair of a specific sub-assembly on the chainsaw.
are also described. • Dismantling and reassembly of the whole chainsaw.
Repair of a specific sub-assembly
When a specific sub-assembly on the chainsaw is to be
Safety repaired, proceed as follows:
Note! The section dealing with safety should be read 1. Look up the page referring to the relevant sub-assembly.
and understood by all who carry out repair or 2. Carry out the steps: Dismantling
service work on the chainsaw. Cleaning and inspection
Warning markings are shown both in this manual and on the Reassembly
chainsaw itself. See page 5. If a warning mark on the
chainsaw has been damaged or is missing, it must be Dismantling and reassembly of the entire chainsaw
replaced immediately in order to maximise safety when the
saw is in use. When the entire chainsaw is to be dismantled and
reassembled, proceed as follows:
1. Look up page 16, which deals with the recoil starter and
Target Audience carry out the instructions under the heading Dismantling.
This workshop manual is written for personnel assuming 2. Work forwards through the manual and carry out
that they have general knowledge of service and repair of Dismantling instructions in the order that the sections
small engines. occur.
The manual should be read and understood by all personnel 3. Return to recoil starter on page 16 and follow the
who will carry out service and repair work on the chainsaw. instructions under Cleaning and inspection.
The manual is also suitable for use in the training of new
employees. 4. Work forward through the manual and carry out Cleaning
and inspection in the order that the sections occur.
5. Order or fetch all the required spare parts from the spares
Changes warehouse.
As production continues, changes will be introduced 6. Look up page 44 which deals with the crankcase and
successively to the chainsaw. If at any time these changes carry out the instructions under Assembly.
influence service and/or spares, special service
announcements will be sent out, which means that this 7. Work backwards through the manual and carry out
manual will cease to be current with time. In order to avoid Reassembly instructions as the sections occur.
problems, the manual should always be read together with
all service announcements that apply to the specific model In order to improve understanding, some sections begin with
of chainsaw. a Description of the relevant sub-assembly.
Tools
Numbering
For specific procedures special tools are required. In this
workshop manual, all the service tools required are listed. Location indicators for components shown in the figures are
Their use is described in the appropriate section. marked A, B, etc.
The figures are numbered 1, 2 etc.
Always use Husqvarna original: The location indicators and figure numbers start again from
• Spares A, 1 etc. at the beginning of each new section.
• Service tools
• Accessories
English – 1
, SAFETY REGULATIONS
General instructions Special instructions
Workshops where chainsaws are serviced must be equipped The fuel used in the chainsaw poses the following hazards:
with safety equipment in accordance with local regulations. 1. The fluid and its fumes are poisonous.
2. Can cause skin irritation.
No one should repair the chainsaw without first having read 3. Is highly inflammable.
and understood the contents of this workshop manual.
The guide bar, chain and clutch cover (chain brake) must be
The following warning texts are to be found in this manual in assembled before the chainsaw is started, otherwise the
certain places. The warning texts occur before the procedure clutch may come loose causing personal injury.
to which they refer.
Wear ear defenders when testing the chainsaw.
! WARNING!
The warning text indicates a risk of
personal injury if instructions are not
followed.
Do not use the saw before it has been adjusted so that the
chain is still when idling.
After testing, do not touch the silencer until it has cooled. Risk
for burns.
NOTE! Inadequate lubrication of the chain can result in the chain
The warning text indicates a risk of damage breaking, which can cause serious or life threatening injury.
to equipment if instructions are not followed.
Make sure that the starter recoil spring does not fly out and
cause personal injury.
If the spring is tensioned when the cord pulley is removed,
the spring can fly out causing personal injury.
When removing the pressure spring for the chain brake,
ensure that the brake is in the on position, otherwise the
spring can fly out causing personal injury.
After repair, the chain brake must be checked in accordance
with the instructions on page 13.
When replacing the crankshaft bearings note that the
crankcase halves are hot. Use protective gloves.
When using compressed air, the air jet should never be
pointed towards the body. Air can be forced into the blood
stream, which can cause fatality.
2 – English