Husqvarna 340 EPA II, 340E EPA II, 350 epa I manual High speed jet H, Correctly adjusted carburetor

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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 0.024 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.

Checking the inertia brake release

With the engine turned off, hold the chain saw over a stump or other firm object. Let go of the front handle so that the bar drops towards the stump as the chain saw rotates around the rear handle.

When the bar hits the stump the brake should be applied.

34 – English

115 09 86-95 Rev.2 2007-11-27

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Contents EPA II 340e EPA 345e EPA II 350 EPA Symbols in the operator’s manual KEY to SymbolsSymbols on the machine You will find the following labels on your chain sawEPA Contents Introduction 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 General Safety Precautions Chain catcher Throttle lockoutRight hand guard Vibration damping system Stop switchCutting equipment MufflerBar Cutting equipment designed to reduce kickbackChain Sharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethTensioning the chain Lubricating cutting equipment 345eChecking chain lubrication Filling with chain oilChain drive sprocket Needle bearing lubrication Checking wear on cutting equipment340, 340e AssemblyFitting the bar and chain 345eAssembly Fuel 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 Safe distance Tree felling techniqueFelling direction Directional cuts Clearing the trunk and preparing your retreatFelling Felling cutFreeing a tree that has fallen badly Freeing a trapped treeGeneral advice How to avoid kickbackWhat is kickback? Cutting trees and branches that are in tensionCutting the trunk into logs Carburetor adjustment MaintenanceGeneral Correctly adjusted carburetor High speed jet HChecking the brake trigger ImmediatelyMuffler Changing a broken or worn starter cord Replacement of broken recoil and drive disc springsStarter Tensioning the recoil springFitting the starter Air filterSpark plug Drive disc spring BWhen making adjustments Needle bearing lubrication Adjustment of the oil pumpLubricating the bar tip sprocket Cooling system 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 Bar and chain combinations050 H30 058 H25 Federal Emission Control Warranty Statement Your Warranty Rights and ObligationsKickback safety precautions American Standard Safety PrecautionsSafety precautions for chain saw users Other safety precautions´z+R§e¶57¨ 115 09 86-95 Rev.2 1150986-95
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