Husqvarna 365 Operation Manual - Page 32

MAINTENANCE Cooling system Electrically heated carburettor (362XPG/371XPG) 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). 5 4 3 2 1 Canada This chain saw is, if it has model code XPG, equipped with electrically heated carburettor. The electrical heating prevents icing in the carburettor. A thermostat regulates heating so that the carburettor always has the correct temperature. All other countries This chain saw is, if it has model code XPG, equipped with electrically regulated carburettor heating. The carburettor heating system is regulated with a 3-way switch. Temperature range The carburettor heater is used in the following temperature range: ±0º C or colder. During high humidity icing of the carburettor can occur earlier than specified. 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. The carburettor heater only heats the carburettor when the 3-way switch is set to position "II". Centrifugal cleaning "Air Injection" 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. The switch is off in position "0" supplies current to the handle heater in position "I" supplies current to the carburettor in position "II" NOTE! The carburettor heater reaches maximum temperature after about 3 minutes. It is therefore important that the saw is not run for longer with the heater switched on. If the switch is left on for longer the carburettor will overheat and lead to running problems or starting problems. Winter use During winter time, powder snow and cold weather can cause running problems, such as: • Too low engine temperature. • Icing on the air filter and carburetor. Therefore some special measures are required: • Partly reduce the air inlet of the starter and by doing that increase the engine temperature. Temperature -5°C or colder: Heated handles (362XPG/371XPG) On the models 362XPG and 371XPG both the front handle and the rear handle are equipped with electrical heating coils. These are supplied with electricity both from a built-in generator in the electrical system. When the red marking on the switch is visible, the heating is on. 32 - English For running the saw in cold weather or powder snow, a special cover is available, which is mounted on the starter housing. This reduces the air flow and prevents large amounts of snow from being sucked in. NOTE! If the special winterising kit has been fitted or any measures have been taken to increase the temperature these changes must be reversed before the saw is used in normal temperature conditions. Otherwise there is a risk that the saw will overheat, resulting in severe damage to the engine. IMPORTANT! Any maintenance other than that described in this manual must be carried out by your servicing dealer.