Husqvarna 115 13 81-26 Spark plug, Lubricating the bar tip sprocket, Needle bearing lubrication

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MAINTENANCE

Spark plug

The spark plug condition is inﬂuenced by:

•Incorrect carburettor adjustment.

•An incorrect fuel mixture (too much or incorrect type of oil).

•A dirty air ﬁlter.

These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting difﬁculties.

If the machine is low on power, difﬁcult to start or runs poorly at idle speed: always check the spark plug ﬁrst before taking any further action. If the spark plug is dirty, clean it and check that the electrode gap is 0.5 mm. The spark plug should be replaced after about a month in operation or earlier if necessary.

Note! Always use the recommended spark plug type! Use of the wrong spark plug can damage the piston/cylinder. Check that the spark plug is ﬁtted with a suppressor.

Lubricating the bar tip sprocket

Lubricate the bar tip sprocket each time you refuel. Use the special grease gun and a good quality bearing grease.

Needle bearing lubrication

The clutch drum has a needle bearing on the output shaft. This needle bearing must be lubricated regularly.

When lubricating, remove the clutch cover by loosening the two bar nuts. Lay the saw on its side with the clutch drum upwards.

Lubrication involves engine oil dripping into the centre of the clutch drum as it rotates.

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).

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.

36 – English

115 13 81-26 Rev.3 2009-01-14

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Contents 445 445e 450e KEY to Symbols Symbols on the machineSymbols in the operator’s manual Contents Introduction Dear CustomerWhat is WHAT? What is what on the chain saw?General Safety Precautions Before using a new chain sawMachine′s safety equipment Always use common sensePersonal protective equipment Chain brake and front hand guardGeneral Safety Precautions Throttle lockout Chain catcherStop switch Right hand guardVibration damping system MufﬂerCutting equipment General rulesCutting equipment designed to reduce kickback Sharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethTensioning the chain 445 445e, 450eLubricating cutting equipment Which could lead to serious, even fatal injuries Chain oilFilling with chain oil Checking chain lubricationChain drive sprocket Needle bearing lubricationChecking wear on cutting equipment Assembly Fitting the bar and chain445 445e, 450eFitting a spike bumper Fuel Handling FuelFuel safety FuellingTransport and storage Long-term storageStarting and Stopping Starting and stoppingStarting Cold engineStopping Basic safety rules Working TechniquesBefore use General working instructionsGeneral rules Basic cutting technique TermsTree felling technique LimbingLog is supported at one end. There is a high risk Safe distanceFelling direction Clearing the trunk and preparing your retreatDirectional cuts Felling cut How to avoid kickback What is kickback?Freeing a tree that has fallen badly Cutting the trunk into logs Maintenance Carburettor adjustmentGeneral Checking the inertia brake release ImmediatelyMufﬂer Starter Replacing the starter cordTensioning the recoil spring Air ﬁlter Replacing the return and drive springsFitting the starter Spark plug Lubricating the bar tip sprocketNeedle bearing lubrication Cooling systemAir Injection centrifugal cleaning Temperature -5C or colderWinter use Maintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations Saw chain ﬁling and ﬁle gaugesEC-declaration of conformity Applies to Europe onlyEN ISO 12100-22003, Cispr 122005, EN ISO ´z+SF,¶6+¨ 115 13 81-26 Rev.3 1151381-26