Husqvarna 325HS75X, 325HS99X manual Muffler, High speed jet H, Correctly adjusted carburettor

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MAINTENANCE

The blades must also remain stationary when the choke control is in the start throttle position.

T

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.

High speed jet H

The high speed jet H affects the engine power, speed, temperature and fuel consumption. If the high speed jet H is set too lean (screwed in too far) the engine speed will be too high and cause engine damage. Do not let the engine run at full speed for more than 10 seconds.

H

Apply full throttle and turn the high speed jet H very slowly clockwise until the engine slows down. Then turn the high speed jet H very slowly anticlockwise until the engine starts to run unevenly. Now turn the high speed jet H slowly clockwise a little way until the engine runs smoothly. Note that the engine should not be under load when the high speed jet is adjusted.

The high speed jet H is adjusted correctly when the machine burbles a little. If the machine races then the setting is too lean. If the engine produces a lot of smoke and burbles a lot then the setting is too rich.

H

CAUTION! For optimum adjustment of the carburettor, contact a qualified dealer/service workshop that has a revolution counter at their disposal.

Correctly adjusted carburettor

When the carburettor is correctly adjusted the machine accelerates without hesitation and burbles a little at maximum speed. It is also important that the blades do not move when

the engine is idling or when the choke control is in the start position. If the low speed jet L is set too lean it may cause starting difficulties and poor acceleration.

If the high speed jet H is set too lean it will result in less power, less performance, poor acceleration and/or damage to the engine. If both the L and H jets are set too rich it will results in acceleration problems or too low a working speed.

Muffler

CAUTION! Some mufflers are fitted with a catalytic converter. See chapter on Technical data to see whether your machine is fitted with a catalytic converter.

The muffler is designed to reduce the noise level and to direct the exhaust gases away from the operator. The exhaust gases are hot and can contain sparks, which may cause fire if directed against dry and combustible material.

Some mufflers are equipped with a special spark arrestor mesh. If your machine has this type of muffler, you should clean the mesh at least once a week. This is best done with a wire brush.

On mufflers without a catalytic converter the mesh should be cleaned weekly, or replaced if necessary. On mufflers fitted with a catalytic converter the mesh should be checked, and if necessary cleaned, monthly. If the mesh is damaged it should be replaced.

If the mesh is frequently blocked, this can be a sign that the performance of the catalytic converter is impaired. Contact your dealer to inspect the muffler. A blocked mesh will cause the machine to overheat and result in damage to the cylinder and piston. See also instructions under the heading Maintenance.

CAUTION! Never use a machine with a defective muffler.

WARNING! Mufflers fitted with catalytic

!converters get very hot during use and remain so for some time after stopping. This also applies at idle speed. Contact can result in burns to the skin. Remember the risk of fire!

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Contents 325HS75X-SERIES 325HS99X-SERIES Symbols KEY to SymbolsContents Safety Instructions Machine′s safety equipmentPersonal protective equipment Muffler Vibration damping systemBlades Fuel safety General safety precautionsAssembly of the catcher accessory Gear housingTransport and storage Safety instructions when using the hedge trimmerSafety instructions regarding the surroundings Safety instructions while workingBasic working techniques Safety instructions after completing workWhat is what? What is WHAT?Fuel Handling FuelFuelling Cold engine Starting and StoppingCheck before starting Starting and stoppingStopping Warm engineCarburettor MaintenanceCorrectly adjusted carburettor MufflerHigh speed jet H Air filter Cleaning the air filterCooling system Spark plugGear housing Cleaning and lubricationMaintenance schedule Technical data Technical DataCispr 121997, EN774 EC-declaration of conformity Applies to Europe only1140179-26

325HS75X, 325HS99X specifications

The Husqvarna 325HS99X and 325HS75X are two remarkable hedge trimmers designed for both professional landscapers and gardening enthusiasts. These models combine power, precision, and comfort, making them ideal for tackling a variety of hedging tasks.

The 325HS99X features a powerful 25.4 cc engine that delivers high performance while remaining fuel-efficient. With its long 39-inch cutting blade, operators can trim large hedges more efficiently, reducing the time spent on the job. The trimmer is equipped with a double-sided blade that cuts smoothly in both directions, allowing for faster work and cleaner cuts. This model also boasts an adjustable rear handle which can be rotated to optimize comfort during various cutting angles.

On the other hand, the 325HS75X features a slightly smaller 24.5 cc engine. Although it provides slightly lower power, it is still competent for a range of trimming tasks. The 30-inch cutting blade enables users to tackle moderate-sized hedges with ease. Like its counterpart, the 325HS75X also has a double-sided blade design, ensuring efficient operation and clean results.

Both models come equipped with Husqvarna's Anti-Vibration technology, which minimizes fatigue during prolonged use. This feature is crucial for professionals who need to use the trimmer for extended periods. Additionally, the ergonomic design of both models enhances user comfort, helping to ensure that operators maintain control even during extended sessions.

Moreover, starting these hedge trimmers is made easier thanks to Husqvarna's Smart Start technology. This system reduces the amount of effort needed to start the engine, ensuring that the trimmers are ready for action without unnecessary hassle. The air filtration system in both models helps prolong the life of the engine by keeping contaminants at bay, reducing maintenance and ensuring reliable operation over time.

In summary, the Husqvarna 325HS99X and 325HS75X hedge trimmers exemplify advanced engineering and design, making them indispensable tools for anyone serious about hedge trimming. With robust power, long blades for efficiency, and innovative features for user comfort, these hedge trimmers are built to handle the demands of both professional and household gardening tasks. Whether you're trimming dense shrubs or shaping hedges, the 325HS99X and 325HS75X offer reliability and performance that gardeners can depend on.
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