Husqvarna 965084001, 966906636 Cooling system, Air Injection centrifugal cleaning, Winter use

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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).

(111)

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.

”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. (112)

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.

Temperature -5°C or colder:

For running the machine in cold weather or powder snow, a special cover is available, which is mounted on the starter housing. This reduces the intake of cold air and prevents large amounts of snow from being sucked in.

(113)

CAUTION! 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 machine is used in normal temperature conditions. Otherwise there is a risk of overheating, 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 (retailer).

1153136-26 Rev.1 2009-12-29

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Contents 445 445e 450e English 1153136-26 Rev.1 3839 4243 1153136-26 Rev.1 English 102 Symbols on the machine KEY to SymbolsSymbols in the operator’s manual Decompression valve The valveContents Dear Customer What is what on the chain saw?Introduction Before using a new chain saw General Safety PrecautionsAlways use common sense Machine′s safety equipmentPersonal protective equipment Chain brake and front hand guardThrottle lockout Stop switchChain catcher Vibration damping systemCutting equipment Sharpening your chain and adjusting depth gauge settingGeneral rules Cutting equipment designed to reduce kickbackTensioning the chain Lubricating cutting equipment Bar Fitting the bar and chain Assembly445 445e, 450eFuel Fuel HandlingFuelling Fuel safetyTransport and storage Long-term storageStarting and stopping Starting and StoppingStarting Cold engineStopping Working Techniques Basic safety rulesBefore use General working instructionsLimbing Basic cutting techniqueTerms Tree felling technique Freeing a tree that has fallen badly How to avoid kickbackWhat is kickback? General MaintenanceCarburettor adjustment Starter MufflerRight hand guard Replacing the starter cordSpark plug Air filterLubricating the bar tip sprocket Needle bearing lubricationTemperature -5C or colder Air Injection centrifugal cleaningCooling system Winter useDaily maintenance Weekly maintenance Monthly maintenance Maintenance scheduleTechnical data Technical DataSaw chain filing and file gauges Bar and chain combinationsEN ISO 12100-22003, Cispr 122005, EN ISO EC-declaration of conformity Applies to Europe onlyEnglish 1153136-26 Rev.1 1153136-26 Rev.1 English Original instructions 1153136-26
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