MAINTENANCE
Cooling systemWinter use
During winter time, powder snow and cold weather can cause
running problems, such as:
Y Too low engine temperature.
To obtain the lowest possible running temperature the saw isY Icing on the air filter and carburettor.
equipped with a cooling system.
Therefore some special measures are required:
The cooling systemY Partly reduce the air inlet of the starter and by doing that
5
consists of:increase the engine temperature.
Y Preheat the intake air to the carburettor by removing the
1. Air intake on the starter4special plug between the cylinder and the carburettor space.
unit.
The cylinder cover is made so it can be changed for running in
3cold weather. There is a possibility to make a hole in which,
2. Air guide plate.
during the warmer part of the year, should be sealed using a
3. Fan blades on theplug.
flywheel.
4. Cooling fins on theTemperature 0oC (32oF) or colder
cylinder.
2
5. Cylinder cowling254
1
(supplies cold air over
the cylinder).Model 254: Turn the cover
lid so that the preheated air
Clean the cooling system with a brush once a week, more often
from the cylinder can pass
in demanding conditions. A dirty or blocked cooling system
into the carburettor area
results in the saw overheating which causes damage to
preventing for instance icing
piston and cylinder.
on the air filter.
Model 257, 262: Move the
cover from position A to
Centrifugal cleaning �Air Injection�
position B so that preheated
Centrifugal cleaning meansair can pass from the
the following:cylinder to the carburettor
All air to the carburettor isspace and prevent forma-
carried through the starter.tion of ice in the air filter.
Dirt and dust is centrifugedNOTE! When the cover is
away by the cooling fan.placed in the air nozzle it is
important that the air nozzle
IMPORTANT! In order toseals hermetically to the
keep the function of thecylinder cover.
centrifugal cleaning, a
continous maintenance and
oo
Temperature -5C (23F) or colder
care must be made.
257, 262
Y Clean the air intake to the
starter, the fan wings of theFor running the saw in cold
flywheel, the space aroundweather or powder snow, a
the flywheel, inlet pipe andspecial cover is available,
carburettor space.which is mounted on the
starter housing. This
reduces the air flow and
prevents large amounts of
snow from being sucked in.
IMPORTANT! If a special
winter kit is assembled or
measures are taken to
increase the engine
temperature, a readjustment
to normal setting has to be
Heated handlesdone when the saw is used
under normal conditions.
On the model XPG both the
Otherwise, there is a risk of
front handle and the rear
overheating, which can
handle are equipped with
cause severe engine
electrical heating coils. These
damage.
are supplied with electricity
from a built-in generator in the
Model 257, 262: When the cover is mounted in position A, it
electrical system. The switch
must be turned with the cut towards the air filter. To make a
for the heating coils is placed
proper centrifugal cleaning possible, the air nozzle must seal
to the right of the rear handle.
hermetically to the crankcase and cylinder cover.
When the switch is pushed to
the right, the heat is switched
IMPORTANT! Any maintenance other than that described in
on. When it is pushed to the
this manual must be carried out by your servicing dealer.
left, the heat is switched off.
32 � English |
ACEC
