Husqvarna 338XPT, 334T manual Air filter, Spark plug, Lubricating the bar tip sprocket

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MAINTENANCE

Air filter

The air filter must be regularly cleaned to remove dust and dirt in order to avoid:

•Carburettor malfunctions

•Starting problems

•Loss of engine power

•Unnecessary wear to engine parts

•Excessive fuel consumption.

•Remove the air filter after taking off the air filter cover. When refitting make sure that the air filter seals tightly against the filter holder. Clean the filter by brushing or shaking it.

The filter can be cleaned more thoroughly by washing it in water and detergent.

An air filter that has been in use for a long time cannot be cleaned completely. The filter must therefore be replaced with a new one at regular intervals. A damaged air filter must always be replaced.

A HUSQVARNA chain saw can be equipped with different types of air filters according to working conditions, weather, season, etc. Contact your dealer for advice.

Spark plug

The spark plug condition is influenced by:

•Incorrect carburetor 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 (0,020"). 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.

Adjustment of the oil pump

The oil pump is adjustable. Adjustments are made by turning the screw using a screwdriver or combination spanner. The machine is supplied from the factory with the screw set to position 2. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow.

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Recommended settings:

Bar 13"-15": Position 1

Bar 15"-18": Position 2

Bar 18"-20": Position 3

WARNING! The engine must be stopped

!when making adjustments.

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Contents 334T 338XPT Symbols on the machine KEY to SymbolsSymbols in the operator’s manual Contents Dear customer IntroductionWhat is what on the chain saw? What is WHAT?Before using a new chain saw General Safety PrecautionsAlways use common sense Personal protective equipment Machine′s safety equipmentChain brake and front hand guard General Safety Precautions Vibration damping system Stop switchThrottle lock Chain catcherCutting equipment designed to reduce kickback Cutting equipmentMuffler General rulesGeneral information on sharpening cutting teeth Sharpening your chain and adjusting depth gauge settingSharpening cutting teeth General advice on adjusting depth gauge settingAdjustment of depth gauge setting Tensioning the chainChecking chain lubrication Lubricating cutting equipmentChain oil Filling with chain oilChecking wear on cutting equipment Chain drive sprocketFitting the bar and chain AssemblyFuel Fuel HandlingLong-term storage Fuel safetyFueling Transport and storageWarm engine Starting and StoppingStarting and stopping Cold engineStopping General working instructions Basic safety rulesWorking Techniques Before useDo not let go of the handles General Basic cutting techniqueTerms Safe distance Felling technique for tree topsCutting LimbingDirectional cuts FellingFreeing a tree that has fallen badly General adviceCutting trees and branches that are in tension What is kickback? How to avoid kickbackCutting the trunk into logs Carburetor adjustment MaintenanceGeneral Checking the front hand guard Checking brake band wearChecking the brake trigger Muffler Changing a broken recoil spring StarterChanging a broken or worn starter cord Tensioning the recoil springLubricating the bar tip sprocket Adjustment of the oil pumpAir filter Spark plugCooling system Daily maintenance Weekly maintenance Monthly maintenance Maintenance scheduleTechnical data Technical DataBar and chain combinations, model 338XPT Bar and chain combinations, model 334TSaw chain filing and file gauges Your Warranty Rights and Obligations Federal Emission Control Warranty StatementOther safety precautions American Standard Safety PrecautionsSafety precautions for chain saw users Kickback safety precautions´z+R*G¶55¨ Page 1150103-95 ´z+R*G¶55¨ ´z+R*G¶55¨
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