MAINTENANCE
Carburettorwith a catalytic converter the screen should be checked and
cleaned monthly. If the screen is damaged it should be
Your Husqvarna product has been designed and replaced. If the screen is frequently blocked, this can be a
manufactured to speci?cations that reduce harmful sign that the function of the catalytic converter is impaired.
emissions. After the engine has used 8-10 tanks of fuel the
engine will be run-in. To ensure that it continues to run at peak
performance and to minimise harmful exhaust emissions after
the running-in period, ask your dealer/service workshop (who
will have a rev counter at their disposal) to adjust your
carburettor.
CAUTION! Never use a machine with a defective mufßer.WARNING! The machine may only be started
in its complete design. If the machine is
!started without all the guards ?tted there is a
risk of personal injuries.Cooling system
Function
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The carburettor governs the engineOs speed via the throttle
control. Air and fuel are mixed in the carburettor. The air/fuel
mixture is adjustable. Correct adjustment is essential to get
the best performance from the machine.
Adjusting the carburettor means that the engine is adapted to
local operating conditions, e.g. climate, altitude, petrol and the
type of 2-stroke oil.
Fine adjustment of the idle speed TThe cooling system consists of:
Adjust the idle speed using the idle adjustment screw T, if it is
necessary to readjust.1 Air intake on the starter.
2 Fins on the ßywheel.
The T-screw regulates the throttle setting at idle speed. If the
T-screw is turned clockwise this gives a higher idle speed; 3 Cooling ?ns on the cylinder.
turning it anti-clockwise gives a lower idle speed. The idle
speed is correctly adjusted when the engine will run smoothly 4 Cylinder cover (directs cold air over the cylinder).
in every position.Clean the cooling system with a brush once a week, more
often in demanding conditions. A dirty or blocked cooling
Rec. idle speed See the Technical data section.
system results in the machine overheating which causes
damage to the piston and cylinder.
Mufßer
The mufßer is designed to reduce the noise level and to direct
the exhaust gases away from the operator. The exhaust gases
are hot and can contain sparks, which may cause ?re if
directed against dry and combustible material.
Some mufßers are equipped with a special spark arrest
screen. If your machine is ?tted with this type of screen it
should be cleaned regularly. This is done using a wire brush.
On mufßers without a catalytic converter the screen should be
cleaned weekly, or replaced if necessary. On mufßers ?tted
14 ? English