MAINTENANCE
Cooling systemWinter use
Running problems can occur when using the machine in the
cold and snowy conditions caused by:
Y Too low engine temperature.
To keep the working temperature as low as possible the
machine is equipped with a cooling system.Y Icing of the air Ţlter and carburettor.
The cooling system consists of:Special measures are therefore often required:
1 Air intake on the starter.Y Partly mask the air inlet on the starter to increase the
working temperature of the engine.
2 Air guide plate.
Y Preheat the intake air to the carburettor by using the heat
3 Fins on the �ywheel.
from the cylinder.
4 Cooling Ţns on the cylinder.
5 Cylinder cover (directs cold air over the cylinder).Temperature 0°°°°C or colder:
5
4
The cylinder cover is designed so it can be adjusted for
3running in cold weather. Twist the winter �ap so that
preheated air from the cylinder can pass into the carburettor
space preventing icing of the air Ţlter, etc.
2
1
Clean the cooling system with a brush once a week, more
often in demanding conditions. A dirty or blocked cooling
system results in the machine overheating which causes
damage to the piston and cylinder.
Note! The cooling system on a chain saw with catalytic
For temperatures below -5°C and/or in snow conditions there
converter must be cleaned daily. This is particularly important
is also:
on chain saws with catalytic converters, because the higher
exhaust temperature requires efŢcient cooling of the engine
Y a special cover (A) for the starter housing
and the catalytic converter unit.
Y a winter plug (B) for the air nozzle that is Ţtted as shown.
�Air Injection� centrifugal cleaning
Centrifugal cleaning means the following: All air to the
carburettor passes through the starter. Dirt and dust is
centrifuged out by the cooling fan.
These reduce the �ow of cooling air and prevent large
amounts of snow from being sucked into the carburettor
space.
CAUTION! When the winter plug is Ţtted the winter �ap must
IMPORTANT! In order to maintain operation of the centrifugal be open!
cleaning system it must be regularly maintained. Clean the air
intake to the starter, the Ţns on the �ywheel, the space around
IMPORTANT! If the temperature rises above -5°C or 0°C
the �ywheel, inlet pipe and carburettor compartment.
respectively the machine MUST be restored to its normal
set-up. Otherwise there is a risk of overheating, which can
cause severe engine damage.
36 � English |
ACEC
HUSQVARNA
