Husqvarna 576XP AutoTune manual Maintenance, General, Carburetor adjustment

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MAINTENANCE

General

The user must only carry out the maintenance and service work described in this manual. More extensive work must be carried out by an authorised service workshop.

Carburetor adjustment

Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions.

AutoTune

If the engine is equipped with AutoTune, manual adjustment of the carburettor’s H and L needles and the T-screw no longer applies. Both needles and the T-screw have been removed. AutoTune is a function that adjusts the carburettor electronically, always resulting in optimal adjustment.

Function

•The carburetor governs the engine’s speed via the throttle control. Air and fuel are mixed in the carburetor. The air/fuel mixture is adjustable.

•The automatic adjustment of the carburettor means that the engine is adapted to local conditions, e.g. the climate, altitude, petrol and the type of 2-stroke oil. This function is controlled by AutoTune.

Conditions

CAUTION! There is an integrated speed governor in the ignition system that limits the maximum speed to 13600 rpm. When the speed governor is activated, you will get the same sound experience as when the chain saw 4-cycles.

Correctly adjusted carburetor

A correctly adjusted carburettor means the machine accelerates without hesitation and it four-strokes a little at full throttle. In addition, the chain should not rotate when idling.

Checking, maintaining and servicing chain saw safety equipment

Note! All servicing and repair work on the machine requires special training. This is especially true of the machine′s safety equipment. If your machine fails any of the checks described below we recommend you to contact our servicing dealer.

Chain brake and front hand guard

Checking brake band wear

Brush off any wood dust, resin and dirt from the chain brake and clutch drum. Dirt and wear can impair operation of the brake.

Regularly check that the brake band is at least 0.024 inch (0.6 mm) thick at its thinnest point.

Checking the front hand guard

Make sure the front hand guard is not damaged and that there are no visible defects such as cracks.

Move the front hand guard forwards and back to make sure it moves freely and that it is securely anchored to the clutch cover.

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Contents 576XP AutoTune Symbols on the machine KEY to SymbolsSymbols in the operator’s manual You will find the following labels on your chain sawContents Dear 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 guardGeneral Safety Precautions Right hand guard Throttle lockoutChain catcher Cutting equipment Stop switchVibration damping system MufflerChain Cutting equipment designed to reduce kickbackBar General information on sharpening cutting teeth Sharpening your chain and adjusting depth gauge settingTensioning the chain Checking chain lubrication Lubricating cutting equipmentFilling with chain oil Checking wear on cutting equipment Chain drive sprocketNeedle bearing lubrication Working with the chain AssemblyFitting the bar and chain Fuel Fuel HandlingFueling Fuel safetyTransport and storage Long-term storageStarting and stopping Starting and StoppingCold engine Warm engineStopping Working Techniques Basic safety rulesBefore use General working instructionsGeneral rules Terms Basic cutting techniqueLimbing Safe distance Tree felling techniqueFelling direction Clearing the trunk and preparing your retreatFelling cut Directional cutsFreeing a tree that has fallen badly General adviceFreeing a trapped tree Cutting trees and branches that are in tensionCutting the trunk into logs How to avoid kickbackWhat is kickback? General MaintenanceCarburetor adjustment Immediately Checking the inertia brake releaseMuffler Changing a broken or worn starter cord StarterTensioning the recoil spring Changing a broken recoil springSpark plug Air filterLubricating the bar tip sprocket Fitting the starterAir Injection centrifugal cleaning Adjustment of the oil pumpWhen making adjustments Needle bearing lubricationTemperature -5C 23F or colder Temperature 0C 32F or colderWinter use Fitting the winterising kitDaily maintenance Weekly maintenance Monthly maintenance Maintenance scheduleTechnical data Technical DataWith significantly reduced kickback potential are available Saw chain filing and file gaugesYour Warranty Rights and Obligations Federal Emission Control Warranty StatementSafety precautions for chain saw users American Standard Safety PrecautionsKickback safety precautions Other safety precautionsPage ´z+S==¶5\¨ Page 1151292-95
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