Maintenance, Carburettor | Husqvarna 235FR instruction

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 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.

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.

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

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

26 – English

235FR specifications

The Husqvarna 235FR is a powerful and versatile brushcutter designed for both professional landscapers and dedicated homeowners. Its robust engineering and innovative features make it an essential tool for tackling tough cutting tasks, whether you're clearing dense brush, trimming weeds, or managing overgrown areas.

One of the standout features of the 235FR is its lightweight yet durable construction. Weighing in at just around 7.5 kg (with cutting equipment), it allows users to maneuver effortlessly while providing high performance. The sleek design ensures that it can easily navigate tight spaces and challenging terrains, making it perfect for both residential and commercial use.

The engine of the Husqvarna 235FR is a reliable 1.1 kW, 2-stroke model that ensures ample power without sacrificing fuel efficiency. This engine is equipped with Air Injection technology, which efficiently separates and removes larger debris particles before they reach the air filter. This feature not only extends the lifespan of the filter but also significantly reduces maintenance time, allowing users to focus more on their work.

The 235FR also features an ergonomic design, with an adjustable handle that optimizes comfort and control during extended use. The anti-vibration system effectively minimizes fatigue, making it easier to work longer hours without discomfort. Additionally, the Soft Start mechanism reduces resistance in the starter cord, making the brushcutter easier to start.

Versatility is a key aspect of the 235FR, which is compatible with a variety of attachments. Users can easily switch between different cutting heads, such as trimmers, saw blades, and brush blades, depending on the specific task at hand. This adaptability enhances its functionality, making it ideal for various landscaping projects.

Moreover, the Husqvarna 235FR is designed with ease of use in mind. Features like the fuel indicator and easy-to-reach controls ensure that users can operate the machine with minimal effort. The efficient design of the cutting equipment reduces line wear, allowing for longer intervals between spool changes.

Overall, the Husqvarna 235FR stands out in the market for its combination of power, efficiency, and user-focused features. Whether you're a professional landscaper or a homeowner looking to maintain your garden, this brushcutter offers the performance and reliability needed to tackle any cutting challenge with ease.

Husqvarna 235FR manual Maintenance, Carburettor

Models: 235FR