Husqvarna 245R/RX Manual: Specs, Maintenance, and 240R Strimmer Head Guide

Page 29
240R, 245R/RX

MAINTENANCE

Carburetor

Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions.

After your unit has been run 8-10 tanks of fuel the engine has broken in. To ensure that your unit is at peak performance and producing the least amount of harmful emissions after break in, have your authorized servicing dealer, who has a revolution counter at his disposal, to adjust your carburetor for optimum operating conditions.

!WARNING!

The complete clutch cover with shaft must be fitted before the machine is started, otherwise the clutch can become loose and cause personal injury.

Functioning

The carburetor governs the

engine speed via the throttle trigger. In the carburetor, air/fuel is mixed. This air/fuel mixture is adjustable. If you want to take advantage of the maximum output of the engine, the setting must be corret.

The setting of the carburetor means that the engine is adjusted to local

 

conditions, for example

 

 

climate, altitude, gasoline

250R, 252RX

 

and type of two-stroke oil.

 

 

The carburetor has three

 

 

adjustment possibilities:

 

 

L=

Low speed needle

 

 

H=

High speed

 

 

adjustment screw

 

 

T=

Idle speed adjustment

 

 

screw

 

The fuel quantity required

 

 

in proportion to the

 

 

airflow the throttle trigger

265RX

 

level allows is adjusted by

T

 

means of the L- and H-

 

 

 

needles. Turning the

 

 

needles clockwise gives a

 

 

leaner fuel mixture (less

 

 

fuel), turning them

 

 

counter-clockwise gives a

 

 

richer fuel mixture (more

 

 

fuel). A lean mixture gives

 

 

higher rpms and a rich one

 

 

lower rpms.

H L

The idling speed screw T

regulates the position of

the throttle lever in the idling speed position. Turn the idling speed screw clockwise gives a higher idling speed, turn it counter-clockwise a lower idling speed.

Basic setting

The carburetor is set to its basic setting when test run at the factory. The basic setting should be kept during the machine‘s first working hours. Thereafter the carburetor should be finely adjusted. Fine adjustment should be carried out by a skilled technician.

NOTE! If the cutting attachment rotates/moves in the idling position, turn the idling speed screw counter-clockwise until the blade stops.

Rec. idling speed 24R, 245R/RX: 2 700 rpm.

Recommended max. speed: See “technical data”.

!WARNING!

Contact your servicing dealer, if the idle speed setting cannot be adjusted so that the cutting attachment stops. Do not use the machine until it has been properly adjusted or repaired.

Fine adjustment

When the machine has been ”run-in” the carburetor should be finely adjusted. The fine adjustment should be carried out by qualified person. First adjust the L-jet, then the idling screw T and then the H-jet.

Conditions

Before any adjustments are made the airfilter should be clean and the airfilter cover fitted. Adjusting the carburetor while a dirty airfilter is in use will result in a leaner mixture when the filter is finally cleaned. This can give rise to serious engine damage.

Carefully turn the L and H needle to the mid point between fully turned in and fully turned out.

Do not attempt to adjust the needles beyond the stops as damage can occur.

Now start the machine according to the starting instructions and run it warm for 10 minutes.

NOTE! If the cutting attachment rotates/moves the T screw should be turned anti-clockwise until the cutting attachment stops.

Low speed needle L

Try to find the highest idling speed, turning the low speed needle L clockwise respectively counter- clockwise. When the highest speed has been found, turn the low speed needle L 1/4 turn counter-clockwise. NOTE! If the cutting attachment rotates/moves in the idling position, turn the idling speed screw T counter-clockwise until the cutting attachment stops.

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Contents 240R 245R/RX 250R 252RX 265RX Symbols Symbol ExplanationContents Machine‘s safety equipment Safety InstructionsPersonal protective equipment Throttle trigger lockCutting attachment guard Stop switchAnti-vibration system Quick-releaseLocking nut MufflerCutting equipment Throttle trigger lock Vibration damping system Cutting equipment Sharpening the clearing blade Cutting equipmentSharpening the grass blade Trimmer headStart Fuel safety General safety instructionsTransport and storage 10 ftGeneral working instructions Basic safety precautionsDesignations Adjusting the harness and clearing sawBasic clearing techniques Working methods Forestry clearing using a saw bladeClearing‘s ABC Brush cutting using a grass blade Brush cutting using the saw bladeClearing Grass clearing using the trimmer head and plastic knifesTrimming SweepingWhat is what on the trimmer/brushcutter? 240R, 245R What is WHAT?What is what on the trimmer/brushcutter? 245RX What is what on the clearing saw? 250R What is what on the clearing saw? 252RX What is what on the clearing saw? 265RX Assembling the handlebars 245RX, 252RX AssemblyAssembling the handlebars 240R, 245R, 250R Assembling the handlebars 265RX Adjusting the throttle controlGrass blade Assembling other guards and cutting equipment Fuelling Fuel HandlingFuel mixture Start and stop Start and StopControl before starting 240R, 245R, 250R Stop245RX, 252RX, 265RX StartCarburetor MaintenanceHigh speed needle Final setting of the idling speed TCorrectly adjusted carburetor Cooling system Muffler240R, 245R/RX 240R, 245R/RX 250R, 252RX 265RX240R, 245R/RX 250R, 252RX 265RX Oiling the air filter Air filterSpark plug Angle gearFiling the grass blade Daily maintenance Maintenance scheduleWeekly maintenance Monthly maintenanceTechnical data 240R 245R 245RX Technical DataTecnical Data Technical data 250R 252RX 265RXCentre hole in saw blades/knives, ∅ Your Warranty Rights Obligations Emission Control Warranty StatementSuper Auto Super Auto II Tri Cut Trimmy H Click Trimmy Hit Junior Trimmy Hit Pro 2,4 mm 080-.095 12 cm ~ 3,5 m ~ 15 cm Trimmy SII Trimmy SII Page Page ´+Ho¶5+¨ Page 2001W34 114 00

245 RX, 245R/RX specifications

The Husqvarna 245R/RX and 245 RX are robust and versatile handheld brushcutters, designed to cater to both professional landscapers and dedicated homeowners. Renowned for their efficiency and reliability, these models incorporate advanced engineering and innovative features that enhance performance and usability.

One of the standout features of the Husqvarna 245R/RX is its lightweight design, weighing approximately 11.5 kg. This makes it easy to handle and reduces operator fatigue during extended use. The ergonomic handle contributes to a comfortable grip and allows for precise maneuverability, making it suitable for tackling various landscaping tasks with ease. The adjustable harness further increases comfort and helps distribute the weight evenly across the body.

Equipped with a powerful 2-cycle engine, the 245R and 245 RX deliver impressive cutting power, ensuring that even the most challenging vegetation can be managed effectively. The engine technology includes advanced air injection, which effectively removes larger debris before it reaches the air filter. This ensures that the air filter stays cleaner for longer, reducing maintenance and extending the lifespan of the machine.

Another essential feature of these brushcutters is the Auto Return Stop Switch, enabling easy operation. It automatically resets to the ON position after each use, which simplifies starting for the next session. Additionally, the model comes with a well-balanced design, which further enhances control and precision while maneuvering around obstacles.

Both the 245R and 245 RX are equipped with a tap-and-go trimmer head, making it easy to release more line when needed without stopping the machine. This feature is particularly useful for maintaining a clean and tidy garden without interruptions. Furthermore, the cutting width is adjustable, allowing users to switch quickly between trimming and cutting thicker grass and brush.

The Husqvarna 245 RX version features additional enhancements tailored for more demanding applications. Its robust gearbox provides exceptional durability, while the increased fuel tank size ensures longer runtime, making it ideal for professionals who require sustained performance in extensive commercial environments.

In summary, the Husqvarna 245R/RX and 245 RX brushcutters combine lightweight design, advanced engine technology, and user-friendly features to deliver exceptional performance for both personal and professional landscaping tasks. Their reliability, ease of use, and versatility make them a top choice for anyone looking to maintain their outdoor spaces effectively.