Husqvarna 338 XPT California manual High speed jet H, Correctly adjusted carburetor, Maintenance

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High speed jet H

MAINTENANCE

High speed jet H

At the factory the engine is adjusted at sea level. When working at a high altitude or in different weather conditions, temperatures and atmospheric humidity, it may be necessary to make minor adjustments to the high speed jet.

CAUTION! If the high speed jet is screwed in too far, it may damage the piston/cylinder.

When test run at the factory, the high speed jet is set so that the engine satisfies the applicable legal requirements at the same time as achieving maximum performance. The carburetor’s high speed jet is then locked using a limiter cap in the fully screwed out position. The limiter cap limits the potential to adjust the high speed jet to at most half a turn.

Correctly adjusted carburetor

When the carburetor is correctly adjusted the machine accelerates without hesitation and the machine 4-cycles a little at max. speed. It is also important that the chain does not rotate at idle. If the L-jet is set too lean it may cause starting difficulties and poor acceleration. If the H-jet is set too lean the machine will have less power, poor acceleration and could suffer damage to the engine.

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 0.6 mm (0,024 inch) 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.

Checking the brake trigger

Place the chain saw on firm ground and start it. Make sure the chain does not touch the ground or any other object. See the instructions under the heading Start and stop.

Grasp the chain saw firmly, wrapping your fingers and thumbs around the handles.

Apply full throttle and activate the chain brake by tilting your left wrist forward onto the front hand guard. Do not let go of the front handle. The chain should stop immediately.

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Contents Operator’s manual EPA III, CARB 338XPT CaliforniaEnglish Symbols on the machine KEY TO SYMBOLSSymbols in the operator’s manual CONTENTS ContentsINTRODUCTION Dear customerWHAT IS WHAT? What is what on the chain saw?Before using a new chain saw GENERAL SAFETY PRECAUTIONSAlways use common sense Personal protective equipment Machine′s safety equipmentChain brake and front hand guard Will my hand always activate the chain brake during a kickback? Stop switch Throttle lockChain catcher Vibration damping systemCutting equipment MufflerGeneral rules Cutting equipment designed to reduce kickbackSharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethWARNING! Departure from the sharpening instructions considerably increases the risk of kickbackGeneral advice on adjusting depth gauge setting Adjustment of depth gauge settingTensioning the chain Sharpening cutting teethLubricating cutting equipment Chain oilFilling with chain oil Checking chain lubricationChecking wear on cutting equipment Chain drive sprocketThe clutch drum is fitted with one of the following drive sprockets ASSEMBLY Fitting the bar and chainFUEL HANDLING FuelGasoline Two-stroke oilFuel safety FuelingTransport and storage Long-term storageSTARTING AND STOPPING Starting and stoppingCold engine Warm engineStopping Basic safety rules WORKING TECHNIQUESBefore use General working instructionsDo not let go of the handles Basic cutting technique GeneralTerms CuttingFelling technique for tree tops LimbingSafe distance Felling directionFelling WARNING! During critical felling operationsDirectional cuts Felling cutFreeing 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 MAINTENANCE Carburetor adjustmentBasic settings and running in Fine adjustmentCorrectly adjusted carburetor High speed jet HChecking brake band wear Checking the front hand guardMAINTENANCE Starter MufflerChanging a broken or worn starter cord Air filter Spark plugTensioning the recoil spring Changing a broken recoil springLubricating the bar tip sprocket Adjustment of the oil pumpCooling system Maintenance schedule Daily maintenanceWeekly maintenance Monthly maintenanceTECHNICAL DATA Technical dataBar and chain combinations, model 338XPT California Recommended original and replacement bar and chain combinationsSaw chain filing and file gauges YOUR WARRANTY RIGHTS AND OBLIGATIONS MANUFACTURER′S WARRANTY COVERAGEOWNER′S WARRANTY RESPONSIBILITIES WARRANTY COMMENCEMENT DATEAMERICAN STANDARD SAFETY PRECAUTIONS Safety precautions for chain saw usersKickback safety precautions Other safety precautionsPage Page 1151439-95 ´z+SK¶5C¨ ´z+SK¶5C¨
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