MAINTENANCE
Cooling system
To keep the working temperature as low as possible the machine is equipped with a cooling system.
The cooling system consists of:
1Air intake on the starter.
2Air guide plate.
3Fins on the flywheel.
4Cooling fins on the cylinder.
5Cylinder cover (directs cold air over the cylinder).
5
4
3
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.
Centrifugal cleaning “Turbo”
Centrifugal cleaning means the following: All air to the carburettor passes through the starter. Dirt and dust is centrifuged out by the cooling fan.
IMPORTANT! In order to maintain operation of the centrifugal cleaning system it must be regularly maintained.
•Clean the air intake to the starter, the fins on the flywheel, the space around the flywheel, inlet pipe and carburettor compartment.
Heated handles
(CS 2171W)
On models with the model code W, both the front handle bar and the rear handle are equipped with electrical heating coils. These are supplied with electricity from a generator built into the chain saw.
When the red mark on the switch is visible, the heating is on.
Electrical carburettor heating
(CS 2171WH)
This machine is equipped with an electronically controlled carburettor heater.
Applications
The carburettor heater is used in the following temperature range: ±0ºC or colder. During high humidity, icing of the carburettor can occur earlier than specified.
The carburettor heater only heats the carburettor when the 3- way switch is set to position ”II”.
The switch is off in position ”0”, supplies current to the handle heater in position ”I”, supplies current to the carburettor in position ”II”.
CAUTION! The carburettor heater reaches maximum temperature after about 3 minutes. It is therefore important that the machine is not run for longer with the heater switched on. If the switch is left on for too long the carburettor will overheat and lead to running problems or starting problems.
Winter use
During cold weather and under powder snow conditions, operating problems can arise due to:
•Too low engine temperature.
•Icing of the air filter and carburettor.
Special measures are therefore often required:
•Partly mask the air inlet on the starter to increase the working temperature of the engine.
IMPORTANT!
Any maintenance other than that described in this manual must be carried out by your servicing dealer (retailer).
34 – English