Husqvarna 326L manual Maintenance, Carburettor

Page 18

MAINTENANCE

Carburettor

Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions. After the engine has used 8-10 tanks of fuel the engine will be run-in. To ensure that it continues to run at peak performance and to minimise harmful exhaust emissions after the running-in period, ask your dealer/service workshop (who will have a rev counter at their disposal) to adjust your carburettor.

WARNING! The complete clutch cover and

!shaft must be fitted before the machine is started, otherwise the clutch can come loose and cause personal injury.

Function

•The carburettor governs the engine’s speed via the throttle control. Air and fuel are mixed in the carburettor. The air/fuel mixture is adjustable. Correct adjustment is essential to get the best performance from the machine.

•The setting of the carburetor means that the engine is adepted to local conditions, for example, the climate, altitude, fuel and the type of 2-stroke oil.

•The carburettor has three adjustment controls: L = Low speed jet

H = High speed jet

T = Idle adjustment screw

•The L and H-jets are used to adjust the supply of fuel to match the rate that air is admitted, which is controlled with the throttle. If they are screwed clockwise the air/fuel ratio becomes leaner (less fuel) and if they are turned anti- clockwise the ratio becomes richer (more fuel). A lean mixture gives a higher engine speed and a rich mixture gives a lower engine speed.

•The T-screw regulates the throttle setting at idle speed. If the T-screw is turned clockwise this gives a higher idle speed; turning it anti-clockwise gives a lower idle speed.

Basic setting

•The basic carburettor settings are adjusted during testing at the factory. The basic setting is richer than the optimal setting and should be maintained for the first few hours the machine is in use. The carburettor should then be finely adjusted. Fine adjustment should be carried out by a skilled technician.

CAUTION! If the cutting attachment rotates when the engine is idling the idle adjustment screw T should be turned anti- clockwise until the cutting attachment stops.

Rec. idle speed 2700 rpm

Recommended max. speed: See the Technical data section.

WARNING! If the idle speed cannot be

!adjusted so that the cutting attachment stops, contact your dealer/service workshop. Do not use the machine until it has been correctly adjusted or repaired.

Fine adjustment

•When the machine has been ”run-in” the carburettor should be finely adjusted. The fine adjustment should be carried out by a qualified person. First adjust the L- jet, then the idling screw T and then the H-jet.

Conditions

•Before any adjustments are made, make sure that the air filter is clean and the air filter cover is fitted. If you adjust the carburettor when the air filter is dirty it will result in a leaner mixture when the filter is finally cleaned. This can lead to serious engine damage.

•Carefully turn both jets, L and H, so that they are midway between fully screwed in and fully screwed out.

•Do not attempt to adjust the L and H jets beyond either stop as this could cause damage.

•Now start the machine according to the starting instructions and let it warm up for 10 minutes.

Low speed jet L

Try to find the highest idling speed, turning the low speed needle L clockwise respectively counter-clockwise. When the highest speed has been found, turn the low speed needle L 1/ 4 turn counter-clockwise.

+ 1/4

L

CAUTION! If the cutting attachment rotates when the engine is idling the idle adjustment screw T should be turned anti- clockwise until the cutting attachment stops.

Fine adjustment of the idle speed T

Adjust the idle speed using the idle adjustment screw T, if it is necessary to readjust. First turn the idle adjustment screw T clockwise until the cutting attachment starts to rotate. Then turn the screw anticlockwise until the cutting attachment stops. The idle speed is correctly adjusted when the engine

18 – English

Page 17 Page 19
Image 18
Page 17 Page 19
Contents 326C 326L 326LX-SERIES KEY to Symbols SymbolsContents Safety Instructions Machine′s safety equipmentPersonal protective equipment Cutting equipment Vibration damping systemMuffler Locking nutSafety Instructions Cutting equipment Trimmer headStarting General safety precautionsFuel safety Transport and storageGeneral working instructions Basic safety rulesGrass trimming using a trimmer head and plastic blades Basic working techniquesCutting What is WHAT? What is what?Assembling and dismantling the two-piece shaft AssemblyFitting the loop handle Fitting the trimmer headFitting other guards and cutting attachments Fitting the trimmer guard and trimmer headGuard Gasoline Fuel HandlingFuel Two-stroke oilFuelling Starting and stopping Starting and StoppingCheck before starting Cold engineStopping Maintenance CarburettorCorrectly adjusted carburettor MufflerHigh speed jet H Shaft Cooling systemSpark plug Air filterWeekly maintenance Maintenance scheduleDaily maintenance Monthly maintenanceTechnical Data Technical dataAttachments Art No Use with Federal Emission Control Warranty Statement Your Warranty Rights and ObligationsSuper Auto Super Auto II Page Trimmy H Click Trimmy Hit Junior Trimmy Hit Pro S35 25 m T35 ´z+H6e¶5/¨ Page 1140226-95

326L specifications

The Husqvarna 326L is a top-tier trimmer designed for professional landscapers and dedicated homeowners who seek power and efficiency in their garden tools. Known for its durable construction and advanced technology, the 326L exemplifies Husqvarna's commitment to producing high-quality outdoor equipment.

One of its standout features is the powerful 25cc two-stroke engine. This engine not only provides high performance but also ensures that the trimmer operates efficiently. The design minimizes vibrations, reducing operator fatigue during extended use, a critical advantage for professionals who spend long hours landscaping.

The 326L is equipped with a Smart Start system, which simplifies the starting process. This technology reduces the resistance in the starter cord by almost 40%, allowing the user to start the equipment with minimal effort. This feature is particularly beneficial for those who may struggle with traditional starting methods.

The trimmer's ergonomic design enhances user comfort. It features an adjustable handle that can be tailored to fit the user’s height and preference, allowing for optimal control during trimming tasks. The lightweight construction, combined with a balanced design, further improves maneuverability, making it easier to navigate through various terrains and obstacles.

Husqvarna has also integrated its patented T35 trimmer head into the 326L. This semi-automatic head allows for quick line feed, enabling users to quickly extend the cutting line without having to stop the machine. The T35 head is designed for efficiency, so users can focus on their work rather than dealing with frequent line replacements.

Durability is a key characteristic of the Husqvarna 326L. The trimmer is built with high-quality materials that resist wear and tear, making it suitable for heavy-duty use. The air filter system extends the life of the engine by keeping dirt and debris out, ensuring peak performance over time.

Another notable aspect is its versatility. The 326L can be equipped with various attachments, including brush blades and different types of cutting heads. This adaptability makes it suitable for a wide range of tasks, from trimming grass to clearing overgrown vegetation.

In conclusion, the Husqvarna 326L is an exceptional tool that combines power, efficiency, and longevity. Its features, including a powerful engine, user-friendly starting system, ergonomic design, and innovative cutting head, make it a valuable asset for anyone serious about lawn care and landscaping. With its proven technologies and robust construction, the Husqvarna 326L stands out as a reliable choice in the competitive market of string trimmers.
Top Page Image Contents