Husqvarna 338XPT EPA III Spark plug, Lubricating the bar tip sprocket, Adjustment of the oil pump

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MAINTENANCE

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 0.020 inch (0.5 mm). 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 middle position. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow.

+-

Recommended settings:

Less oil with short bar and/or soft wood.

More oil with longer bar and/or hard wood.

 

!

WARNING! The engine must be stopped

 

when making adjustments.

 

 

 

 

 

Cooling system

To keep the working temperature as low as possible the machine is equipped with a cooling system.

The cooling system consists of:

1Air intake on the starter.

2Air guide plate.

3Fins on the flywheel.

4Cooling fins on the cylinder.

5Cylinder cover (directs cold air over the cylinder).

Clean the cooling system with a brush once a week, more often in demanding conditions. A dirty or blocked cooling system results in the machine overheating which causes damage to the piston and cylinder.

Note! The cooling system on a chain saw with catalytic converter must be cleaned daily. This is particularly important on chain saws with catalytic converters, because the higher exhaust temperature requires efficient cooling of the engine and the catalytic converter unit.

34 – English

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Contents 334T 338XPT EPA III, Carb Symbols in the operator’s manual KEY to SymbolsSymbols on the machine You will find the following labels on your chain sawContents Introduction Dear customerWhat is WHAT? What is what on the chain saw?Before using a new chain saw General Safety PrecautionsAlways use common sense Machine′s safety equipment Personal protective equipmentChain brake and front hand guard Chain catcher Throttle lockoutVibration damping system Muffler Stop switchCutting equipment General rulesBar Sharpening your chain and adjusting depth gauge settingCutting equipment designed to reduce kickback ChainIncreased if the depth gauge setting is General advice on adjusting depth gauge settingToo large Lubricating cutting equipment Adjustment of depth gauge settingTensioning the chain Bar and cause serious or even fatal injuryChecking chain lubrication Filling with chain oilChain drive sprocket Checking wear on cutting equipment Fitting the bar and chain AssemblyWorking with the chain 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 instructionsDo not let go of the handles Preparing to use the saw in the tree Using the chainsaw in the treeGeneral requirements working at height Securing the work position for two-handed useBasic cutting technique Log is supported at both ends. There is a high risk Felling technique for tree topsLimbing Directional cuts Felling directionFelling cut Freeing 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 CarburetorChecking brake band wear Correctly adjusted carburetorHigh speed jet H Checking the front hand guardImmediately Starter MufflerChanging a broken or worn starter cord Changing a broken recoil spring Air filterTensioning the recoil spring Fitting the starterSpark plug Adjustment of the oil pumpWhen making adjustments Lubricating the bar tip sprocketMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations, model 338XPT Bar and chain combinations, model 334TSaw chain filing and file gauges Your Warranty Rights and Obligations What is not Covered Kickback safety precautions American Standard Safety PrecautionsSafety precautions for chain saw users Other safety precautionsPage ´z+SE¶5j¨ Page 1151375-95

1151375-95, 338XPT EPA III specifications

The Husqvarna 338XPT is a powerful chainsaw designed specifically for professionals who require reliability and performance in demanding environments. One of its standout features is the lightweight design, making it easy to maneuver while still delivering impressive power. Weighing in at just over 10 pounds, the 338XPT allows users to work for extended periods without fatigue, making it an ideal choice for arborists and forestry workers.

At the heart of the Husqvarna 338XPT is its efficient engine, which not only provides robust cutting performance but is also designed with EPA III compliance in mind. This means the machine adheres to strict environmental regulations, producing lower emissions while ensuring a high power output. The X-Torq engine technology is one of the key innovations that contribute to its efficiency. This technology reduces fuel consumption by up to 20% while also decreasing harmful exhaust emissions. This dual benefit makes the 338XPT a viable option for users who prioritize both performance and environmental responsibility.

Another notable characteristic of the Husqvarna 338XPT is its advanced air filtration system, which enhances the durability of the engine by ensuring that only clean air reaches it. The centrifuge air cleaning system significantly prolongs the time between filter cleanings, allowing users to focus more on their work and less on maintenance. This feature is particularly beneficial in dusty or dirty job sites, ensuring optimal performance in various conditions.

Comfort and usability are also central to the design of the 338XPT. The chainsaw includes an ergonomic handle that allows for better control during operation, reducing vibrations and enhancing user comfort. Additionally, the chainsaw's easy-access chain tensioning system makes adjusting the chain as simple as possible, ensuring that users can quickly get back to their tasks at hand without unnecessary delays.

For safety-conscious users, the Husqvarna 338XPT is equipped with features like a combined choke/stop control that allows for easy starting and reduces the risk of engine flooding. Furthermore, the chainsaw's inherent balance and lightweight structure contribute to safer handling and operation.

In summary, the Husqvarna 338XPT EPA III is a top-of-the-line chainsaw that combines power, efficiency, and user-friendly features, making it a prime choice for professionals in the forestry and arborist fields. Its robust engine technology, advanced air filtration, and ergonomic design ensure that you can tackle any job with confidence and ease.
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