Husqvarna 445, 445e, 450e ”Air Injection” centrifugal cleaning, Winter use, Maintenance

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”Air Injection” centrifugal cleaning

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.

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.

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).

115 10 81-26 Rev.2 2008-01-11

English – 37

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Contents 445 445e 450e Operator′s manualSymbols on the machine KEY TO SYMBOLSSymbols in the operator’s manual Contents CONTENTSDear Customer INTRODUCTIONWhat is what on the chain saw? WHAT IS WHAT?Before using a new chain saw GENERAL SAFETY PRECAUTIONSAlways use common sense Machine′s safety equipmentPersonal protective equipment Chain brake and front hand guard8 – English Throttle lockout Right hand guard Stop switchVibration damping system MufﬂerGeneral rules Cutting equipmentCutting equipment designed to reduce kickback WARNING! Departure from the General information on sharpening cutting teethsharpening instructions considerably increases the risk of kickbackincreased if the depth gauge setting is General advice on adjusting depth gauge settingAdjustment of depth gauge setting Tensioning the chain445e, 450e which could lead to serious, even fatal injuries Lubricating cutting equipmentChain oil Filling with chain oilChain drive sprocket Fitting the bar and chain ASSEMBLYFitting a spike bumper Fuel FUEL HANDLINGFuelling Fuel safetyTransport and storage Long-termstorageStarting and stopping STARTING AND STOPPINGStopping Before use WORKING TECHNIQUESGeneral working instructions 24 – English Basic cutting technique Tree felling technique 12 3Clearing the trunk and preparing your retreat Felling directionFelling Directional cutsFelling cut What is kickback? How to avoid kickbackFreeing a tree that has fallen badly Limbing WARNING! A majority of kickback Carburettor adjustment MAINTENANCEGeneral Checking the brake trigger Checking the inertia brake releaseimmediately Mufﬂer Replacing the starter cord StarterTensioning the recoil spring Replacing the return and drive springs Air ﬁlterFitting the starter Lubricating the bar tip sprocket Spark plugNeedle bearing lubrication Cooling systemWinter use ”Air Injection” centrifugal cleaningTemperature -5Cor colder Daily maintenance Maintenance scheduleWeekly maintenance Monthly maintenanceTechnical data TECHNICAL DATASaw chain ﬁling and ﬁle gauges Bar and chain combinationsLength, inch Pitch, inchApplies to Europe only EC-declarationof conformity´z+S,¶6c¨ ´z+S,¶6c¨ Page 1151081-26 ´z+S,¶6c¨ ´z+S,¶6c¨