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MAINTENANCE
General
The user must only carry out the maintenance and service work described in this manual. More extensive work must be carried out by an authorised service workshop.
Carburetor adjustment
Due to existing environmental and emissions legislation your chain saw is equipped with movement limiters on the carburetor adjuster screws. These limit the adjustment possibilities to a maximum of a 1/2 turn.
L
H
1/2
1/2
Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions.
Function
• The carburetor governs the engine’s speed via the throttle control. Air and fuel are mixed in the carburetor. The air/fuel mixture is adjustable. Correct adjustment is essential to get the best performance from the machine.
• The setting of the carburetor means that the engine is adapted to local conditions, for example, the climate, altitude, fuel and the type of 2-stroke oil.
• The carburetor has three adjustment controls:
- L = Low speed jet
- H = High speed jet
- T = Idle adjustment screw
L
H
T
Basic settings and running in
The basic carburetor settings are adjusted during testing at the factory. Avoid running at a too high speed for extended periods during the first 10 hours.
CAUTION! If the chain rotates while idling the T-screw
must be turned anti-clockwise until the chain stops.
Rec. idle speed: 2700 rpm
Fine adjustment
When the machine has been ”run-in” the carburetor should be finely adjusted. The fine adjustment should
be carried out by a qualified person. First adjust the Ljet, then the idling screw T and then the H-jet.
Conditions
• Before any adjustments are made the air filter should be clean and the cylinder cover fitted. Adjusting the carburetor while a dirty air filter is in use will result in a leaner mixture next time the filter is cleaned. This can give rise to serious engine damage.
•
Do not attempt to adjust the L and H jets beyond either stop as this could cause damage.
• Now start the machine according to the starting instructions and let it warm up for 10 minutes.
• Place the machine on a flat surface so that the bar points away from you and so that the bar and chain do not come into contact with the surface or other objects.
Low speed jet L
Turn the low speed jet L clockwise until it stops. If the engine accelerates poorly or idles unevenly, turn the low speed jet L anticlockwise until good acceleration and idling are achieved.
Fine adjustment of the idling speed T
Adjust the idle speed with the T-screw. If it is necessary to re-adjust, turn the T-screw clockwise while the engine is running, until the chain starts to rotate. Then turn counterclockwise until the chain stops. A correctly adjusted idle speed setting occurs when the engine runs smoothly in every position. It should also be good margin to the rpm when the chain starts to rotate.
• The L and H-jets are used to adjust the supply of fuel to match the rate that air is admitted, which is controlled with the throttle. If they are screwed clockwise the air/fuel ratio becomes leaner (less fuel) and if they are turned anti-clockwise the ratio becomes richer (more fuel). A lean mixture gives a higher engine speed and a rich mixture gives a lower engine speed.
• The T-screw regulates the throttle setting at idle speed. If the T-screw is turned clockwise this gives a higher idle speed; turning it anti-clockwise gives a lower idle speed.
!
WARNING! Contact your servicing dealer, if the idle speed setting cannot be adjusted so that the chain stops at idle.
Do not use the chain saw until it has been properly adjusted or repaired.
English
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29
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Table of contents
- 2 Symbols on the machine:
- 2 Symbols in the operator’s manual:
- 3 Contents
- 4 Dear customer!
- 6 Before using a new chain saw
- 6 Important
- 7 Always use common sense
- 7 Personal protective equipment
- 7 Machine¢s safety equipment
- 7 Chain brake and front hand guard
- 9 Will my hand always activate the chain brake during a kickback?
- 9 Will my inetria activated chain brake always activate during kickback in the event of a kickback?
- 9 Will my chain brake always protect me from injury in the event of a kickback?
- 9 Throttle lockout
- 9 Chain catcher
- 9 Right hand guard
- 10 Vibration damping system
- 10 Stop switch
- 10 Muffler
- 10 Cutting equipment
- 10 General rules
- 11 Cutting equipment designed to reduce kickback
- 12 Sharpening your chain and adjusting depth gauge setting
- 13 Tensioning the chain
- 14 Lubricating cutting equipment
- 16 Fitting the bar and chain
- 17 Fuel
- 17 Gasoline
- 17 Two-stroke oil
- 17 Mixing
- 17 Chain oil
- 18 Fueling
- 18 Fuel safety
- 18 Transport and storage
- 18 Long-term storage
- 19 Starting and stopping
- 19 Cold engine
- 19 Warm engine
- 19 Starting
- 20 Stopping
- 21 Before use:
- 21 General working instructions
- 21 Basic safety rules
- 22 General rules
- 23 Basic cutting technique
- 25 Tree felling technique
- 27 Freeing a tree that has fallen badly
- 28 How to avoid kickback
- 28 What is kickback?
- 29 General
- 29 Carburetor adjustment
- 29 Function
- 29 Basic settings and running in
- 29 Fine adjustment
- 29 Conditions
- 29 Low speed jet L
- 29 Fine adjustment of the idling speed T
- 30 High speed jet H
- 30 Correctly adjusted carburetor
- 30 Checking, maintaining and servicing chain saw safety equipment
- 30 Chain brake and front hand guard
- 31 Throttle lockout
- 32 Chain catcher
- 32 Right hand guard
- 32 Vibration damping system
- 32 Stop switch
- 32 Muffler
- 33 Starter
- 33 Changing a broken or worn starter cord
- 33 Tensioning the recoil spring
- 33 Changing a broken recoil spring
- 33 Fitting the starter
- 34 Air filter
- 34 Spark plug
- 34 Lubricating the bar tip sprocket
- 35 Needle bearing lubrication
- 35 Adjustment of the oil pump
- 35 Cooling system
- 35 ”Air Injection” centrifugal cleaning
- 36 Winter use
- 36 Fitting the winterising kit
- 36 Temperature 0°C (32°F) or colder:
- 36 Temperature -5°C (23°F) or colder:
- 36 Heated handles
- 36 Electrical carburetor heating
- 37 Maintenance schedule
- 38 Technical data
- 39 Recommended original and replacement bar and chain combinations
- 39 Saw chain filing and file gauges
- 40 YOUR WARRANTY RIGHTS AND OBLIGATIONS
- 40 MANUFACTURER¢S WARRANTY COVERAGE
- 40 OWNER¢S WARRANTY RESPONSIBILITIES
- 40 WARRANTY COMMENCEMENT DATE
- 40 LENGTH OF COVERAGE
- 40 WHAT IS COVERED
- 40 WHAT IS NOT COVERED
- 40 HOW TO FILE A CLAIM
- 40 WHERE TO GET WARRANTY SERVICE
- 40 MAINTENANCE, REPLACEMENT AND REPAIR OF EMISSION-RELATED PARTS
- 40 EMISSION CONTROL WARRANTY PARTS LIST
- 40 MAINTENANCE STATEMENT
- 41 Safety precautions for chain saw users
- 41 Kickback safety precautions
- 41 Other safety precautions