Husqvarna 445, 445e, 450e manual Mufﬂer, Maintenance

Page 33

Mufﬂer

MAINTENANCE

Chain catcher

Check that the chain catcher is not damaged and is ﬁrmly attached to the body of the chain saw.

Right hand guard

Check that the right hand guard is not damaged and that there are no visible defects, such as cracks.

Vibration damping system

Regularly check the vibration damping units for cracks or deformation.

Make sure the vibration damping units are securely attached to the engine unit and handle unit.

Stop switch

Start the engine and make sure the engine stops when you move the stop switch to the stop setting.

CAUTION! The start/stop switch automatically returns to run position. In order to prevent unintentional starting, the spark plug cap must be removed from the spark plug when assembling, checking and/or performing maintenance.

Mufﬂer

Never use a machine that has a faulty mufﬂer.

Regularly check that the mufﬂer is securely attached to the machine.

Some mufﬂers are equipped with a special spark arrestor mesh. If your machine has this type of mufﬂer, you should clean the mesh at least once a week. This is best done with a wire brush. A blocked mesh will cause the engine to overheat and may lead to serious damage.

Note! The mesh must be replaced if it is damaged. If the mesh is blocked the machine will overheat and this will cause damage to the cylinder and piston. Never use a machine with a mufﬂer that is in poor condition. Never

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

English – 33

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Contents 445 445e 450e Operator′s manualKEY TO SYMBOLS Symbols on the machineSymbols 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 MufﬂerCutting equipment General rulesCutting 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 WORKING TECHNIQUES Before useGeneral working instructions 24 – English Basic cutting technique Tree felling technique 12 3Clearing the trunk and preparing your retreat Felling directionFelling Directional cutsFelling cut How to avoid kickback What is kickback?Freeing a tree that has fallen badly Limbing WARNING! A majority of kickback MAINTENANCE Carburettor adjustmentGeneral Checking the inertia brake release Checking the brake triggerimmediately Mufﬂer Starter Replacing the starter cordTensioning the recoil spring Air ﬁlter Replacing the return and drive springsFitting the starter Lubricating the bar tip sprocket Spark plugNeedle bearing lubrication Cooling system”Air Injection” centrifugal cleaning Winter useTemperature -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¨