Husqvarna 250R, 240R, 240F, 265RX, 252RX Maintenance, Carburettor, Muffler, Function, Basic setting

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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.

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.

The basic setting can vary between: H = 1 - 1 1/4 turns and L = 1 - 1 1/4 turns.

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.

240R, 240F, 250R, 252RX:

Rec. idle speed 2700 rpm

265RX:

Rec. idle speed 2250 rpm

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.

CAUTION! The machine should only be run for short periods at its highest speed. For optimum adjustment of the carburettor, contact a qualified dealer/service workshop that has a revolution counter at their disposal.

Recommended max. speed: See the Technical data section.

During the running-in period (8-10 tanks of fuel) the maximum speed should be set 600-700 rpm below the recommended maximum speed (= open the high speed jet H a further 1/8 turn).

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.

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Contents 240F 240R 250R 252RX 265RX Symbols KEY to SymbolsContents Dear Customer IntroductionWhat is what on the clearing saw? 240R What is WHAT?What is what on the clearing saw? 240F What is what on the clearing saw? 250R What is what on the clearing saw? 252RX What is what on the clearing saw? 265RX Personal protective equipment General Safety PrecautionsMachine′s safety equipment Cutting attachment guard Stop switchThrottle lock Muffler Vibration damping systemQuick release Cutting equipment Cutting equipmentLocking nut Sharpening the saw blade Sharpening grass cutters and grass bladesTrimmer head Assembling the handlebar and throttle AssemblyFitting the handlebar Transport position, handlebarFitting a blade guard, grass blade and grass cutter Adjusting the throttle triggerAssembling the cutting equipment Fitting the blade guard and saw blade Blade guard a is fitted using 4 screws L as shownFitting other guards and cutting attachments Adjusting the harness and clearing sawStandard harness Triobalance harnessCorrect balance Adjusting the harnessFuel Fuel safetyFuel Handling Mixing FuellingCheck before starting Starting and StoppingCold engine Starting and stoppingWarm engine StoppingWorking Techniques Basic safety rulesGeneral working instructions ABC of clearingWorking methods Forestry clearing using a saw bladeBrush cutting with a saw blade Grass clearing using a grass bladeTrimming Grass trimming with a trimmer headBasic setting MaintenanceCarburettor MufflerAir filter Cleaning the air filterCooling system Oiling the air filter Bevel gearSpark plug Maintenance Daily Weekly Monthly Maintenance scheduleTechnical data Technical DataTechnical data 250R 252RX 265RX Engine Technical Data Cispr 121997, EN608 EC-declaration of conformityApplies to Europe only Page Page Clic 35-50 NM 095-.130Page 3,3 mm 106-.130 Mm 9,0 m Mm 7,5 m Mm 6,0 m 15 cm ´z+H96¶6a¨ Page 1140252-26 ´z+H96¶6a¨ ´z+H96¶6a¨ Gardening Tools Direct

250R, 252RX, 265RX, 240F, 240R specifications

Husqvarna, a leader in outdoor power equipment, offers a range of high-performance brushcutters designed for both professionals and avid gardeners. Among the standout models in their lineup are the Husqvarna 265RX, 250R, 252RX, 240R, and 240F. Each model boasts unique features and technologies that cater to various needs, ensuring efficient performance for different landscaping and gardening tasks.

The Husqvarna 265RX is known for its robust power and durability, equipped with a high-performance 25.4 cc engine. This model features a unique X-Torq engine technology, which significantly reduces fuel consumption and emissions while delivering a high torque output. Its ergonomic design includes an adjustable handlebar and a lightweight build, ensuring user comfort even during extended use. The 265RX also comes with a Tap ‘n Go trimmer head, allowing for easy line advancement, saving time in the field.

Similarly, the Husqvarna 250R offers a balance of power and maneuverability, with a 25 cc engine and a well-balanced design. This model features an efficient air injection system that increases engine life by filtering out larger debris before it reaches the air filter. The 250R also incorporates a Smart Start system designed to make starting the machine effortless, reducing cord resistance during the start-up process.

The 252RX model enhances user experience with its lightweight frame and powerful engine. With a displacement of 25.4 cc, it provides high performance while minimizing fatigue during longer working hours. The 252RX is also equipped with an ergonomic handle, which can be adjusted to conform to the user’s height, promoting comfort and control.

The Husqvarna 240R is specially designed for residential users, featuring a 40 cc engine that strikes a balance between power efficiency and ease of use. Its low weight makes it ideal for routine maintenance tasks around the yard, while the automatic choke system ensures hassle-free starting, even in colder conditions.

Lastly, the Husqvarna 240F is an excellent choice for users who require versatility. This model is equipped with a robust 40 cc engine and a versatile attachment system that allows users to switch between different tools, enhancing its functionality. The 240F also includes a dual line head for improved cutting efficiency.

Together, these Husqvarna models showcase the brand’s commitment to innovation, performance, and user comfort, making them ideal choices for various applications in lawn care and landscaping. Whether for professional use or home gardening, Husqvarna's offerings remain at the forefront of outdoor power equipment technology.
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