Husqvarna 325HS99X, 325HS75X manual Cooling system, Spark plug, Air filter, Cleaning the air filter

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MAINTENANCE

Cooling system

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

1 2

3 4

The cooling system consists of:

1Air intake on the starter.

2Fins on the flywheel.

3Cooling fins on the cylinder.

4Cylinder 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.

Spark plug

The spark plug condition is influenced by:

•Incorrect carburettor 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 0.5 mm. The spark plug should be replaced after about a month in operation or earlier if necessary.

CAUTION! Always use the recommended spark plug type! Use of the wrong spark plug can damage the piston/cylinder.

Air filter

The air filter must be regularly cleaned to remove dust and dirt in order to avoid:

•Carburettor malfunctions

•Starting problems

•Loss of engine power

•Unnecessary wear to engine parts.

•Excessive fuel consumption.

Clean the filter every 25 hours, or more regularly if conditions are exceptionally dusty.

Cleaning the air filter

Remove the air filter cover and take out the filter. Wash it clean in warm, soapy water. Ensure that the filter is dry before refitting it.

An air filter that has been in use for a long time cannot be cleaned completely. The filter must therefore be replaced with a new one at regular intervals. A damaged air filter must always be replaced.

If the machine is used in dusty conditions the air filter should be soaked in oil. See instructions under the heading Oiling the air filter.

Oiling the air filter

Always use HUSQVARNA filter oil, art. no. 503 47 73-01. The filter oil contains a solvent to make it spread evenly through the filter. You should therefore avoid skin contact.

Put the filter in a plastic bag and pour the filter oil over it. Knead the plastic bag to distribute the oil. Squeeze the excess oil out of the filter inside the plastic bag and pour off the excess before fitting the filter to the machine. Never use common engine oil. This would drain through the filter quite quickly and collect in the bottom.

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Contents 325HS75X-SERIES 325HS99X-SERIES KEY to Symbols SymbolsContents Machine′s safety equipment Safety InstructionsPersonal protective equipment Vibration damping system MufflerBlades General safety precautions Assembly of the catcher accessoryGear housing Fuel safetySafety instructions when using the hedge trimmer Safety instructions regarding the surroundingsSafety instructions while working Transport and storageSafety instructions after completing work Basic working techniquesWhat is WHAT? What is what?Fuel Fuel HandlingFuelling Starting and Stopping Check before startingStarting and stopping Cold engineWarm engine StoppingMaintenance CarburettorMuffler Correctly adjusted carburettorHigh speed jet H Cleaning the air filter Cooling systemSpark plug Air filterCleaning and lubrication Gear housingMaintenance schedule Technical Data Technical dataEC-declaration of conformity Applies to Europe only Cispr 121997, EN7741140179-26

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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