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32 – English
MAINTENANCE
Cooling system
To obtain the lowest possible running temperature the saw is
equipped with a cooling system.
The cooling system
consists of:
1. Air intake on the starter
unit.
2. Air guide plate.
3. Fan blades on the
flywheel.
4. Cooling fins on the
cylinder.
5. Cylinder cowling
(supplies cold air over
the cylinder).
Clean the cooling system with a brush once a week, more often
in demanding conditions. A dirty or blocked cooling system
results in the saw overheating which causes damage to
piston and cylinder. NOTE! The cooling system of chain
saws that are fitted with a catalytic converter must be
cleaned daily. This is particularly important on saws with
catalytic converters, because the higher working tempera-
ture of the exhaust demands efficient cooling of the engine
and the catalytic converter unit.
Heated handles (2159W)
On the model 2159W both the
front handle and the rear
handle are equipped with
electrical heating coils. These
are supplied with electricity
from a built-in generator in the
electrical system.
When the switch is pushed
upwards, the heat is switched
on. When it is pushed
downwards the heat is
switched off.
Centrifugal cleaning ”Turbo”
Centrifugal cleaning means
the following:
All air to the carburetor is
carried through the starter.
Dirt and dust is centrifuged
away by the cooling fan.
IMPORTANT! In order to
keep the function of the
centrifugal cleaning, a
continous maintenance and
care must be made.
• Clean the air intake to the
starter, the fan wings of the
flywheel, the space around
the flywheel, inlet pipe and
carburetor space.
H
Winter use
During winter time, snow and cold weather can cause running
problems, such as:
• Too low engine temperature.
• Icing of the air filter and freezing of the carburetor.
Therefore some special measures are required:
• Partly reduce the air inlet of the starter and by doing that
increase the engine temperature.
• Preheat the intake air to the carburetor by using the heat from
the cylinder.
Temperature 0°C (32°F) or
colder:
The cylinder cover is made so
it can be adjusted for running
in cold weather. Open the
winter flap so that preheated
air from the cylinder can pass
into the carburetor area
preventing for instance icing
of the air filter.
For temperatures below -5°C
(23°F) and/or in snow
conditions there is also:
• a special cover (A) for the
starter housing,
These reduce the air flow and
prevent large amounts of
snow from being sucked into
the carburetor chamber.
NOTE! When the winter plug
is fitted the winter flap must be
open.
IMPORTANT! If the temperature rises above -5°C (23°F) or 0°C
(32°F) respectively the saw MUST be restored to its normal
settings. Otherwise there is a risk of overheating, which can
cause severe engine damage.
IMPORTANT! Any maintenance other than that described in
this manual must be carried out by your servicing dealer.
1
2
5
4
3
H
H
The oil pump is adjustable.
Adjustments are made by
turning the screw using a
screwdriver or combination
spanner. The saw is supplied
from the factory with the screw
set to position 2. Turning the
screw clockwise will reduce
the oil flow and turning the
screw anti-clockwise will
increase the oil flow.
Adjustment of the oil pump
–
+
1
2
3
WARNING! The engine must not be running
when making adjustments.
Recommended settings:
Bar 13"-15": Position 1 Bar 15" -18": Position 2
Bar 18"-20": Position 3
Electrically heated carburetor (2159W)
This chain saw is, if it has model code W, equipped with
electrically heated carburetor. The electrical heating prevents
icing in the carburetor. A thermostat regulates heating so that
the carburetor always has the correct temperature.