Husqvarna 325HDA65X-Series, 323HE3, 325HE3X-Series, 325HE4X-Series 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.

•Adjusting the carburettor means that the engine is adapted to local operating conditions, e.g. climate, altitude, petrol 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 blades move while the engine is idling the T screw should be turned anti-clockwise until they stop.

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.

CAUTION! If the blades move while the engine is idling the T screw should be turned anti-clockwise until they stop.

Low speed jet L

Try to find the highest idle speed by turning the low speed jet L clockwise then anti-clockwise. When the highest speed has been found, turn the low speed jet L 1/4 turn anti-clockwise.

+ 1/4

L

CAUTION! If the blades move while the engine is idling the T screw should be turned anti-clockwise until they stop.

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Contents 325HDA65X-series 323HE3 325HE3X-series 325HE4X-series KEY to Symbols SymbolsContents Introduction Dear CustomerWhat is WHAT? What is what?General Safety Precautions Personal protective equipmentMachine′s safety equipment Stop switchThrottle lockout Muffler Hand guardVibration damping system 325HDA65,323HE3,325HE3Blade guard Gear housingBlades 325HDA65Fitting the hand guard and loop handle AssemblyAdjusting the harness Fitting the handleFitting the impact guard Fuel safety Fuel HandlingFuel Fuelling MixingStarting and Stopping Check before startingStarting and stopping Working Techniques Safety instructions regarding the surroundingsSafety instructions while working General working instructionsSafety instructions after completing work Basic working techniquesChanging the hedge trimmer angle Transport position 325HE3,325HE4Maintenance CarburettorMuffler Fine adjustment of the idle speed TCorrectly adjusted carburettor High speed jet HSpark plug Cleaning the air filterCooling system Air filterGear housing Cleaning and lubricationMaintenance schedule Maintenance Daily Weekly MonthlyTechnical Data Technical dataEC-declaration of conformity Applies to Europe only 1150278-26 ´z+Rr¶6¨ ´z+Rr¶6¨

325HDA65X-Series, 323HE3, 325HE3X-Series, 325HE4X-Series specifications

Husqvarna has established itself as a leader in the world of outdoor power equipment, particularly with its innovative hedge trimmers. Among its impressive lineup are the 325HDA65X-Series, 323HE3, 325HE3X-Series, and 325HE4X-Series. Each model boasts unique characteristics and cutting-edge technologies designed for both professional landscapers and avid gardeners.

The 325HDA65X-Series features a robust design, offering exceptional durability and efficiency. It is equipped with a powerful engine that delivers high performance, making it suitable for demanding tasks. This hedge trimmer is equipped with a double-sided blade for enhanced cutting efficiency, allowing users to trim hedges and shrubs quickly and accurately. The rotating rear handle ensures comfortable operation at various angles, providing flexibility while working.

The 323HE3 is another noteworthy option, designed with user comfort in mind. Its lightweight design and well-balanced structure reduce fatigue during extended use. It features an adjustable blade for different trimming tasks, making it extremely versatile. Husqvarna’s LowVib technology minimizes vibrations for a smoother operation, enabling longer work sessions without discomfort. The ergonomic grip further enhances control and maneuverability.

The 325HE3X-Series offers professional-grade performance, equipped with an efficient engine that provides high cutting power and exceptional fuel efficiency. This model integrates Husqvarna's innovative X-Torq engine technology, which reduces emissions and fuel consumption without sacrificing performance. The blade is designed for fast and neat trimming, and the extended reach capability makes it ideal for taller hedges and hard-to-reach areas.

Last but not least, the 325HE4X-Series raises the bar with its enhanced features for professional use. It includes an adjustable tube length for added convenience when working in varying conditions. The trimmer is also equipped with a heated handle option for comfortable use in colder climates. Featuring advanced anti-vibration systems and low-weight components, it allows for extended usage with minimal fatigue.

Overall, the Husqvarna hedge trimmers in these series are engineered for optimal performance, durability, and user comfort. Their advanced technologies cater to both casual gardeners and professional landscapers, making them an essential addition to any outdoor maintenance toolkit.
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