Husqvarna 250 R manual Maintenance, Carburetor

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MAINTENANCE

Carburetor

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.

Carburetor adjustment

The carburettor can be designed in different ways, depending on the existing environmental and emissions legislation. Some machines are equipped with movement limiters on the carburettor’s adjuster screws. These limit the adjustment range to a maximum of 1/2 turn.

1/2

1/2

Function

•The carburetor governs the engine’s speed via the throttle control. Air and fuel are mixed in the carburetor. The air/ fuel mixture is adjustable. Correct adjustment is essential to get the best performance from the machine.

•The setting of the carburetor means that the engine is adapted to local conditions, for example, the climate, altitude, fuel and the type of 2-stroke oil.

•The carburetor 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 carburetor 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).

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.

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Contents 240F 240R 250R 252RX 265RX KEY to Symbols SymbolsContents Introduction Dear customerWhat is WHAT? What is what on the clearing saw? 240RWhat 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 General Safety Precautions Personal protective equipmentMachine′s safety equipment Stop switchThrottle lockout Quick release Cutting attachment guardVibration damping system MufflerLocking nut Locking screwCutting equipment Cutting equipmentSharpening grass cutters and grass blades Sharpening the saw blade Trimmer headAssembly Assembling the handlebar and throttle 240R, 250RFitting the handlebar 240F, 252RX Fitting the handlebar 265RX Adjusting the throttle triggerTransport position, handlebar 240R, 240F, 250R, 252RX Assembling the cutting equipmentFitting a blade guard, grass blade and grass cutter Fitting the blade guard and saw bladeFitting other guards and cutting attachments Fitting the trimmer guard and trimmer head Trimmy SIIAdjusting the harness and clearing saw Standard harnessTriobalance harness Adjusting the harness Correct balanceFuel safety Fuel HandlingFuel Fueling MixingStarting and stopping Starting and StoppingCheck before starting Cold engineStarting StoppingGeneral working instructions Basic safety rulesWorking Techniques ABC of clearingForestry clearing using a saw blade Working methodsGrass clearing using a grass blade Brush cutting with a saw bladeGrass trimming with a trimmer head TrimmingMaintenance CarburetorHigh speed jet H 240R, 240F Fine adjustment of the idle speed TLow speed jet L 240R, 240F, 250R, 252RX High speed jet H 250R, 252RXCooling system Correctly adjusted carburetorMuffler 265RXBevel gear Cleaning the air filterAir filter Oiling the air filterSpark plug Maintenance schedule Maintenance Daily Weekly MonthlyTechnical Data Technical dataTechnical data 250R 252RX 265RX Engine Technical Data Federal Emission Control Warranty Statement Your Warranty Rights and ObligationsPage Page Trimmy SII Page Auto Page ´z+R9e¶5f¨ Page 1150256-95 ´z+R9e¶5f¨ ´z+R9e¶5f¨

250 R specifications

The Husqvarna 250 R stands as a prominent contender in the realm of off-road motorcycles, particularly for those who seek performance and rideability in rugged terrains. This model encapsulates a combination of advanced engineering and rider-focused design, making it a favorite among both amateur and experienced riders.

One of the standout features of the Husqvarna 250 R is its powerful engine. The bike is powered by a 249cc, single-cylinder, two-stroke engine, optimized for maximum performance across various riding conditions. With its lightweight construction, the engine delivers impressive power without sacrificing maneuverability. Riders can expect robust acceleration and excellent throttle response, which is crucial for navigating challenging trails and obstacles.

The Husqvarna 250 R also incorporates cutting-edge technologies that enhance its performance. One notable feature is the electronic fuel injection system, which ensures optimal fuel delivery and improved efficiency. This technology not only contributes to the overall performance of the engine but also minimizes emissions and enhances fuel economy. The bike’s adjustable power valve allows for customizable power delivery, catering to the rider’s preferences and the riding environment.

Another significant aspect of the Husqvarna 250 R is its lightweight chassis, constructed from high-quality materials. The frame is designed to provide excellent rigidity while keeping the overall weight to a minimum. This balance of strength and lightness contributes to the bike's agility and ease of handling, making it versatile for various riding styles and terrains.

Suspension is another critical feature of the Husqvarna 250 R. The bike is equipped with fully adjustable WP XACT forks at the front and a WP XACT shock at the rear, offering superior damping capabilities. This advanced suspension system provides enhanced stability and comfort, allowing for better control during aggressive maneuvers or when tackling rough terrains.

The ergonomics of the Husqvarna 250 R are tailored to enhance the riding experience. The seat is designed for optimal comfort, providing support during long rides while ensuring that riders can easily shift their weight when necessary. The bike also features wide footpegs that deliver excellent grip and control.

In summary, the Husqvarna 250 R is a remarkable off-road motorcycle that combines performance, advanced technology, and rider-friendly design. Its powerful engine, lightweight chassis, superior suspension system, and ergonomic features make it an ideal choice for adventure enthusiasts looking to conquer the trails with confidence and agility. Whether navigating through tight woods or tackling open trails, the Husqvarna 250 R is engineered to deliver an exhilarating riding experience.
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