Husqvarna 545 manual ”Air Injection” centrifugal cleaning, Winter use, Heated handles, Maintenance

MAINTENANCE

”Air Injection” centrifugal cleaning

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.

Winter use

Running problems can occur when using the machine in the cold and snowy conditions caused by:

•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.

•Preheat the intake air to the carburettor by using the heat from the cylinder.

Temperature 0°C or colder:

The intermediate wall is designed so it can be adjusted for running in cold weather, so that preheated air from the cylinder can pass into the carburettor space preventing icing of the air filter, etc. Lift off the air filter to obtain better access. Use a screwdriver to carefully knock away the plug in the partition.

For temperatures below -5°C and/or in snow conditions a special cover is available, which is mounted on the starter housing.

Part number: 522 98 66-01.

These reduce the flow of cooling air and prevent large amounts of snow from being sucked into the carburettor space.

IMPORTANT! If the temperature rises above -5°C or 0°C respectively, the starter housing cover MUST be removed and the accompanying plug, art. no. 503 40 59-01 fitted in the hole in the partition wall. Otherwise there is a risk of overheating, resulting in severe damage to the engine.

Heated handles

550XPG, 550XPG TrioBrake

On models with the model code XPG 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 switch is pushed upwards, the heat is switched on. When the switch is pushed downwards, the heat is switched off.

Electrical carburettor heating

550XPG, 550XPG TrioBrake

On models with the designation XPG there is an electrically heated carburettor. Electrically powered heating prevents ice formation in the carburettor. A thermostat regulates the heating so that the carburettor always has the right working temperature.

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