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 authorized service workshop.
Carburetor adjustment
Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions.
AutoTune
The engine is equipped with AutoTune, so manual adjustment of the carburettor’s H and L needles and the T- screw no longer applies. Both needles and the
WARNING! If the saw chain rotates while
! idling, contact your servicing dealer. Do not use the chain saw until it has been properly adjusted or repaired.
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.
•The automatic adjustment of the carburettor means that the engine is adapted to local conditions, e.g. the climate, altitude, petrol and the type of
Engine adjustment
The following steps should be taken when the chain saw is started for the first time or when outside circumstances change (fuel, altitude, air filter etc.):Start the engine.
Accelerate the engine and saw a number of cuts in a thick log
The chain saw must be run (8,000 - 12,000 rpm) the entire time so that the carburettor can adjust itself.
Conditions
NOTE! There is an integrated speed governor in the ignition system that limits the maximum speed. When the speed governor is activated, you will get the same sound experience as when the chain saw
Checking, maintaining and servicing chain saw safety equipment
Note! All servicing and repair work on the machine requires special training. This is especially true of the machine′s safety equipment. If your machine fails any of the checks described below we recommend you to contact our servicing dealer.
Chain brake and front hand guard
Checking brake band wear
•Brush off any wood dust, resin and dirt from the chain brake and clutch drum. Dirt and wear can impair operation of the brake.
•Regularly check that the brake band is at least 0.024 inch (0,6 mm) thick at its thinnest point.
Checking the front hand guard
•Make sure the front hand guard is not damaged and that there are no visible defects such as cracks.
•Move the front hand guard forwards and back to make sure it moves freely and that it is securely anchored to the clutch cover.
Checking the brake trigger
•Place the chain saw on firm ground and start it. Make sure the chain does not touch the ground or any other
32 – English
