Husqvarna Essential Carburetor Maintenance Tips for 575XP Models
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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.

30 – English

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Contents 575XP AutoTune EPA KEY to Symbols Symbols on the machineSymbols in the operator’s manual EPA Contents Introduction Dear customerWhat is WHAT? What is what on the chain saw?General Safety Precautions Before using a new chain sawAlways use common sense Machine′s safety equipment Personal protective equipmentChain brake and front hand guard General Safety Precautions Right hand guard Throttle lockoutChain catcher Vibration damping systemMuffler Stop switchCutting equipment General rulesChain Cutting equipment designed to reduce kickbackBar Some terms that describe the bar and chainSharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethAdjustment of depth gauge setting General advice on adjusting depth gauge settingIf the depth gauge setting is too large Tensioning the chainLubricating cutting equipment Filling with chain oilChecking chain lubrication Chain drive sprocket Needle bearing lubricationChecking wear on cutting equipment Assembly Fitting the bar and chainFuel Handling FuelTransport and storage Fuel safetyFueling Long-term storageCold engine Starting and StoppingStarting and stopping Warm engineStopping Before use Basic safety rulesWorking Techniques General working instructionsGeneral rules Basic cutting technique TermsLimbing CuttingFelling direction Tree felling techniqueSafe distance Clearing the trunk and preparing your retreatDirectional cuts Felling cutFreeing a trapped tree General adviceFreeing a tree that has fallen badly Cutting trees and branches that are in tensionHow to avoid kickback What is kickback?Cutting the trunk into logs Maintenance Carburetor adjustmentGeneral Checking the inertia brake release Muffler Tensioning the recoil spring StarterChanging a broken or worn starter cord Changing a broken recoil springFitting the starter Air filterSpark plug Must always be replacedLubricating the bar tip sprocket Adjustment of the oil pumpWhen making adjustments Needle bearing lubricationTemperature -5C 23F or colder Air Injection centrifugal cleaningTemperature 0C 32F or colder Winter useMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataSaw chain filing and file gauges Federal Emission Control Warranty Statement Your Warranty Rights and ObligationsKickback safety precautions American Standard Safety PrecautionsSafety precautions for chain saw users Other safety precautionsPage Page Page Page Page Page 1150861-95
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