Husqvarna 3120XP Checking chain lubrication, Chain drive sprocket, Needle bearing lubrication

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GENERAL SAFETY PRECAUTIONS

Checking chain lubrication

•Check the chain lubrication each time you refuel. See instructions under the heading Lubricating the bar tip sprocket.

Aim the tip of the bar at a light coloured surface about 20 cm (8 inches) away. After 1 minute running at 3/4 throttle you should see a distinct line of oil on the light surface.

If the chain lubrication is not working:

•Check that the oil channel in the bar is not obstructed. Clean if necessary.

•Check that the groove in the edge of the bar is clean. Clean if necessary.

•Check that the bar tip sprocket turns freely and that the lubricating hole in the tip sprocket is not blocked. Clean and lubricate if necessary.

If the chain lubrication system is still not working after carrying out the above checks and associated measures you should contact your service agent.

Chain drive sprocket

The clutch drum is ﬁtted with one of the following drive sprockets:

ASpur sprocket (the chain sprocket is welded on the drum)

BRim sprocket (replaceable)

Regularly check the degree of wear on the drive sprocket. Replace if wear is excessive. Replace the drive sprocket whenever you replace the chain.

Needle bearing lubrication

Both versions of sprockets have a needle bearing on the drive shaft, which has to be greased regularly (once a week). CAUTION! Use a high-quality bearing grease or engine oil.

Checking wear on cutting equipment

Check the chain daily for:

•Visible cracks in rivets and links.

•Whether the chain is stiff.

•Whether rivets and links are badly worn.

Replace the saw chain if it exhibits any of the points above.

We recommend you compare the existing chain with a new chain to decide how badly the existing chain is worn.

When the length of the cutting teeth has worn down to only 4 mm the chain must be replaced.

14 – English

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Contents 3120XP Symbols in the operator’s manual KEY to SymbolsSymbols on the machine Contents Introduction Dear CustomerWhat is WHAT? What is what on the chain saw?Always use common sense General Safety PrecautionsBefore using a new chain saw Chain brake and front hand guard Machine′s safety equipmentPersonal protective equipment General Safety Precautions Right hand guard Throttle lockoutChain catcher Vibration damping systemMufﬂer Stop switchCutting equipment General rulesSharpening your chain and adjusting depth gauge setting Too large Increased if the depth gauge setting isAdjustment of depth gauge setting Which could lead to serious, even fatal Tensioning the chainLubricating cutting equipment Chain oilNeedle bearing lubrication Checking chain lubricationChain drive sprocket Checking wear on cutting equipmentBar Working with the chain AssemblyFitting the bar and chain Fuel Handling FuelExtra chain oil Fuel safetyFuelling Transport and storage Long-term storageCold engine Starting and StoppingStarting and stopping Warm engineStopping Before use Basic safety rulesWorking Techniques General working instructionsWorking Techniques There are ﬁve important factors you should consider Basic cutting techniqueTerms LimbingFelling direction Tree felling techniqueSafe distance Felling Training we advise you not to fell trees Clearing the trunk and preparing your retreatFelling cut Your sawFreeing a trapped tree General adviceFreeing a tree that has fallen badly Cutting trees and branches that are in tensionCutting the trunk into logs How to avoid kickbackWhat is kickback? Maintenance CarburettorCorrectly adjusted carburettor High speed jet HChecking the brake trigger ImmediatelyChanging a broken or worn starter cord MufﬂerStarter Fitting the starter Tensioning the recoil springChanging a broken recoil spring Lubricating the bar tip sprocket Air ﬁlterSpark plug Must always be replacedCooling system Adjustment of the oil pumpNeedle bearing lubrication Maintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataGuide bar and saw chain combinations Saw chain ﬁling and ﬁle gaugesEN ISO 121002010, ISO 149822009, EN ISO EC-declaration of conformityApplies to Europe only 0404/09/2119Original instructions 1153183-26

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