MAINTENANCE
Needle bearing maintenanceWinter use
During winter time, powder snow and cold weather can cause
running problems, such as:
AY Too low engine temperature.
Y Icing on the air filter and carburettor.
The clutch drum is equipped
with one of the following chainTherefore some special measures are required:
sprockets:Y Partly reduce the air inlet of the starter and by doing that
increase the engine temperature.
Y Preheat the intake air to the carburettor by removing the
Y Spur sprocket (A) (the chainspecial plug between the cylinder and the carburettor space.
sprocket is welded on theB
drum)The cylinder cover has a special feature for use in cold
climates. It is possible to open up a hole in the cylinder cover
Y Rim sprocket (B)which can then be plugged with a rubber plug during warmer
(exchangeable)weather.
(Ref. no. 503 40 59-01)
Both versions have built-in
needle bearing at the driveTemperature 0oC (32oF) or colder
shaft, whitch has to be
greased regularly (once a
week).
NOTE! Use only high quality
Break out the hole or remove
bearing grease.
the rubber plug so that
preheated air from the
cylinder can enter the
carburettor chamber and
prevent the air filter from icing
Cooling system
up.
To obtain the lowest possible running temperature the saw is
equipped with a cooling system.The cooling system
consists of:
5
1. Air intake on the starteroo
Temperature -5C (23F) or colder
unit.
4
2. Air guide plate.
3
3. Fan blades on the
flywheel.If the saw is used in severe
cold or powder snow
4. Cooling fins on theconditions you can fit a
cylinder.special cover over the starter
2unit. This reduces the flow of
5. Cylinder cowlingcold air and prevents large
1
(supplies cold air overamounts of snow from being
the cylinder).sucked in.
(Ref. no. 503 53 53-71)
Clean the cooling system with a brush once a week, more often
in demanding conditions. A dirty or blocked cooling systemIMPORTANT! If a special
results in the saw overheating which causes damage to
winter kit is assembled or
piston and cylinder.
measures are taken to
increase the engine
temperature, a readjustment
Heated handles
to normal setting has to be
done when the saw is used
(272XPG)
under normal conditions.
On the model 272XPG both
Otherwise, there is a risk of
the front handle and the rear
overheating, which can
handle are equipped with
cause severe engine
electrical heating coils. These
damage.
are supplied with electricity
both from a built-in generatorIMPORTANT! Any maintenance other than that described in
in the electrical system. The
this manual must be carried out by your servicing dealer.
switch for the heating coils is
placed below the stop switch.
When the red marking is
visible, the heating is on.
32 � English |