How do I replace the line on a Husqvarna 250 R Trimmer?

To replace the line on a Husqvarna 250 R Trimmer using the Trimmy SII head:Remove the old line from the trimmer head.Measure a new line of approximately 7.0 meters (23 feet) with a diameter between 2.4 and 3.3 mm.Fold the line in half to find the midpoint.Insert the folded end of the line into the eyelet on the trimmer head, pulling it through until both ends are even.Wind the line tightly and evenly around the drum in the direction indicated by the arrow on the head.Ensure the line is securely wound and does not overlap.Snap the head back together if it was disassembled.Trim the excess line to the correct length using the cutter on the trimmer guard. For more information, see page 42 of the manual.

Why is my Husqvarna 250 R Trimmer not starting?

Your Husqvarna 250 R Trimmer may not be starting due to the following reasons:If the machine is difficult to start, check the spark plug first. A dirty spark plug or incorrect electrode gap can cause starting issues.A dirty air filter can lead to starting problems.If the low speed jet L is set too lean, it may cause starting difficulties and poor acceleration.

How do I start a Husqvarna 250 R Trimmer?

To start a Husqvarna 250 R Trimmer, follow these steps: For a cold engine:Set the stop switch to the start position.Set the choke control in the choke position.For a warm engine: Use the same starting procedure as for a cold engine, but without setting the choke control in the choke position. Instead, set the throttle to the start position by moving the choke control to the choke position and then returning it to its original position. Once the choke is set (for cold engine) or the throttle is set to start position (for warm engine): Hold the body of the machine on the ground using your left hand. Grip the starter handle and slowly pull out the cord until you feel some resistance (when the starter pawls grip). Quickly and powerfully pull the cord. As soon as the engine fires, reset the choke control and repeat pulling the starter cord until the engine starts. The throttle will automatically disengage from the start setting when you apply more throttle. Do not pull the starter cord all the way out, and do not let go of the starter handle when the cord is fully extended, as this can damage the machine.

Why does my Husqvarna 250 R Trimmer keep stalling?

Your Husqvarna 250 R Trimmer may keep stalling due to several reasons: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. If the idle speed cannot be adjusted to stop the cutting attachment, contact your dealer/service workshop.If the machine is low on power, difficult to start, or runs poorly at idle speed, check the spark plug first. A dirty spark plug or incorrect electrode gap (0.5 mm) can cause these issues.An air filter that is dirty can cause carburetor malfunctions, starting problems, loss of engine power, and excessive fuel consumption.If the low speed jet L is set too lean, it may cause starting difficulties and poor acceleration, which can lead to stalling.If both the L and H jets are set too rich, it can result in acceleration problems or too low a working speed, potentially leading to stalling.

What is the correct fuel mixture for the Husqvarna 250 R Trimmer?

The Husqvarna 250 R Trimmer uses a mixture of gasoline and two-stroke engine oil. The mixing ratio is 1:50 (2%) with HUSQVARNA two-stroke oil. For gasoline:Use a quality gasoline/oil mixture with an octane rating of at least 87 octane ((RON+MON)/2).If your machine has a catalytic converter, always use a good quality unleaded gasoline/oil mixture. Leaded gasoline will destroy the catalytic converter.Low-emission gasoline, also known as alkylate gasoline, is recommended if available.When working at continuous high revs, a higher octane rating is recommended.For two-stroke oil: For best results and performance, use HUSQVARNA two-stroke engine oil, which is specially formulated for air-cooled two-stroke engines. Never use two-stroke oil intended for water-cooled engines (sometimes referred to as outboard oil, rated TCW) or oil intended for four-stroke engines. To mix the fuel: Always mix gasoline and oil in a clean container intended for fuel. Start by filling half the amount of gasoline, then add the entire amount of oil. Mix (shake) the fuel mixture, then add the remaining amount of gasoline. Mix (shake) the fuel mixture thoroughly before filling the machine's fuel tank. Do not mix more than one month's supply of fuel at a time.

What diameter trimmer line should I use with the Husqvarna 250 R?

When using the trimmer head with the Husqvarna 250 R, you should use either 3 mm or 3.3 mm diameter trimmer cord.

Why is my Husqvarna 250 R Trimmer losing power?

Your Husqvarna 250 R Trimmer may be losing power due to the following reasons:If the engine lacks power or accelerates poorly, first check the air filter and replace it if necessary. If this does not resolve the issue, contact an authorized service workshop, as the carburetor needles may need adjustment or replacement.If the high speed jet H is set too lean (screwed in too far), it will result in less power, less performance, poor acceleration, and potential engine damage.If the machine is low on power, difficult to start, or runs poorly at idle speed, you should always check the spark plug first.

How do I adjust the carburetor on a Husqvarna 250 R Trimmer?

To adjust the carburetor, follow these steps:Ensure the air filter is clean and the air filter cover is fitted. Adjusting the carburetor with a dirty air filter can lead to a leaner mixture and serious engine damage.Carefully turn both the L (low speed) and H (high speed) jets so they are midway between fully screwed in and fully screwed out. Do not attempt to adjust them beyond either stop, as this could cause damage.Start the machine according to the starting instructions and let it warm up for 10 minutes.For the low speed jet L (250R), find the highest idling speed by turning the L needle clockwise and counter-clockwise. Once found, turn the L needle 1/4 turn counter-clockwise.For the idle speed T, turn the idle adjustment screw clockwise until the cutting attachment starts to rotate. Then, turn the screw anti-clockwise until the cutting attachment stops. The idle speed is correctly adjusted when the engine runs smoothly in all positions and is well below the speed at which the cutting attachment starts to rotate.For the high speed jet H (250R), ensure the trimmer cord length is correct (3 mm or 3.3 mm diameter). Run the machine warm for about 5 minutes, mostly at full throttle. Apply full throttle and turn the H-needle anti-clockwise until the engine burbles or until the cap reaches its stop position. Then, turn the H-needle slowly clockwise until the engine runs absolutely smoothly (burbling has stopped completely). Finally, screw the H-needle anti-clockwise a few tenths of a turn.If the cutting attachment rotates when the engine is idling, the idle adjustment screw T should be turned anti-clockwise until it stops. If the idle speed cannot be adjusted so that the cutting attachment stops, contact a dealer/service workshop. For optimum adjustment, contact a qualified dealer/service workshop with a revolution counter.

Why is my Husqvarna 250 R Trimmer smoking?

Your Husqvarna 250 R Trimmer may be smoking if the engine produces a lot of smoke and burbles a lot. This indicates that the high speed jet H setting is too rich. For more information, see page 31 of the manual.

How do I clean or replace the air filter on my Husqvarna 250 R Trimmer?

To clean or replace the air filter:The air filter must be regularly cleaned to remove dust and dirt.Clean the filter every 25 hours, or more regularly if conditions are exceptionally dusty.For 250R, 252RX models: Remove the air filter cover and remove both filters, A and B. Both filters must be washed in warm, soapy water and dried. Filter A must then be soaked in oil if the machine is used in dusty conditions. Use HUSQVARNA filter oil (art. no. 531 00 92-48). Put the filter in a plastic bag, pour oil over it, knead the bag to distribute the oil, and squeeze out excess oil before fitting. An air filter that has been in use for a long time cannot be cleaned completely and must be replaced at regular intervals. A damaged air filter must always be replaced. For more information, see page 33 of the manual.

What are the common causes of a Husqvarna 250 R Trimmer overheating?

Common causes of a Husqvarna 250 R Trimmer overheating include:A blocked spark arrestor mesh on the muffler, which can cause the engine to overheat and lead to serious damage.A dirty or blocked cooling system, which prevents the machine from cooling effectively and can cause damage to the piston and cylinder.If the high speed jet H is set too lean (screwed in too far), the engine speed will be too high, which can cause engine damage, implying overheating.

How do I check or replace the fuel filter on my Husqvarna 250 R Trimmer?

You should check the fuel filter for contamination and the fuel hose for cracks or other defects. Replace it if necessary. This check is part of the monthly maintenance schedule. For more information, see page 35 of the manual.

How do I check or replace the spark plug on a Husqvarna 250 R Trimmer?

To check or replace the spark plug:If the machine is low on power, difficult to start, or runs poorly at idle speed, always check the spark plug first.If the spark plug is dirty, clean it.Check that the electrode gap is 0.5 mm (0.020").The spark plug should be replaced after about a month in operation or earlier if necessary.Always use the recommended spark plug type to avoid damaging the piston/cylinder.Ensure the spark plug is fitted with a suppressor.According to the maintenance schedule, you should clean the outside of the spark plug, remove it, and check the electrode gap weekly. Replace the spark plug and check if it's fitted with a suppressor monthly.

How do I remove the head from a Husqvarna 250 R Trimmer?

To remove the trimmer head, follow the instructions for fitting in reverse order. For Trimmy SII and other cutting attachments, the fitting process involves:Fitting the correct trimmer guard.Fitting the drive disc on the output shaft.Turning the blade shaft until one of the holes in the drive disc aligns with the corresponding hole in the gear housing.Inserting the locking pin in the hole to lock the shaft.Screwing on the trimmer head/plastic blades in the opposite direction to the direction of rotation.Tightening the trimmer head to a torque of 35-50 Nm.Therefore, to remove the head, you would generally perform these steps in reverse: Loosen the trimmer head by turning it in the direction of rotation until it is unscrewed. Remove the locking pin from the gear housing. Remove the drive disc from the output shaft. Remove the trimmer guard by unscrewing the four screws and removing the support plate. For more information, see page 19 of the manual.

What is the recommended maintenance schedule for the Husqvarna 250 R Trimmer?

The recommended maintenance schedule for the Husqvarna 250 R Trimmer is as follows: Daily maintenance:Clean the outside of the machine.Check that the harness is not damaged.Make sure the throttle trigger lock and the throttle function correctly from a safety point of view.Check that the handle and handlebar are undamaged and secured correctly.Check that the stop switch works correctly.Check that the cutting attachment does not rotate at idle.Clean the air filter. Replace if necessary.Check that the guard is undamaged and not cracked. Replace the guard if it has been exposed to impact or is cracked.Check that the blade is correctly centred, is sharp, and is not cracked. An off-centre blade will cause vibration that could result in damage to the machine.Check that the trimmer head is undamaged and not cracked. Replace the trimmer head if necessary.Check that the locking nut of the cutting equipment is tightened correctly.Check that the locking screw is tightened when using a support cup with bearings.Check that the transport guard for the blade is intact and that it can be secured correctly.Check that nuts and screws are tight.Check that there are no fuel leaks from the engine, tank or fuel lines.Weekly maintenance: Check the starter and starter cord. Check that the vibration damping elements are not damaged. Clean the outside of the spark plug. Remove it and check the electrode gap. Adjust the gap to 0.5 mm (.020"), or replace the spark plug. Check that the spark plug is fitted with a suppressor. Clean the machine's cooling system. Clean or replace the spark arrestor mesh on the muffler (only applies to mufflers without a catalytic converter). Monthly maintenance: Clean the outside of the carburetor and the space around it. Check that the bevel gear is filled three-quarters full with lubricant. Fill if necessary using special grease. Check the fuel filter from contamination and the fuel hose from cracks or other defects. Replace if necessary. Check all cables and connections. Check the clutch, clutch springs and the clutch drum for wear. Replace if necessary by an authorized service workshop. Replace the spark plug. Check that the spark plug is fitted with a suppressor. Check and clean the spark arrestor mesh on the muffler (only applies to mufflers fitted with a catalytic converter). For more information, see page 35 of the manual.

Why is my Husqvarna 250 R Trimmer vibrating excessively?

Excessive vibration in your Husqvarna 250 R Trimmer can be caused by:Incorrectly wound cord or an incorrect cutting attachment increasing the level of vibration. Ensure the trimmer cord is wound tightly and evenly around the drum.Cracks or deformation in the vibration damping units. These should be regularly checked.A blade that is not correctly centred, sharp, or is cracked. An off-centre blade will cause vibration and potential damage to the machine.

How do I grease the head of my Husqvarna 250 R Trimmer?

The bevel gear is filled with the correct quantity of grease at the factory. Before using the machine, you should check that the bevel gear is filled three-quarters full with grease. Use HUSQVARNA special grease. The grease in the bevel gear does not normally need to be changed unless repairs are carried out. For more information, see page 33 of the manual.

How often should I clean the cooling fins on my Husqvarna 250 R Trimmer?

You should clean the cooling system (which includes the cooling fins on the cylinder and flywheel) with a brush once a week, or more often in demanding conditions. For more information, see page 32 of the manual.

What attachments are compatible with the Husqvarna 250 R Trimmer?

The following attachments are compatible with the Husqvarna 250 R Trimmer: Grass blade/grass cutter: Multi 255-3 (Ø 255 3 teeth), Multi 275-4 (Ø 275 4 teeth), Multi 300-3 (Ø 300 3 teeth). Saw blade: Maxi XS 200-22 (Ø 200 22 teeth), Maxi XS 225-22 (Ø 225 22 teeth). Plastic blades: Tricut Ø 300 mm. Trimmer head: Trimmy S, Trimmy S II, Auto 55. Shredder blade: Set 537 16 55-01. All these attachments require an Output shaft thread M12 and specific cutting attachment guards.

What safety precautions should I take when operating the Husqvarna 250 R Trimmer?

When operating the Husqvarna 250 R Trimmer, take the following safety precautions: General Safety:Read and understand the operator's manual before using the machine.Never use the machine if you are tired, have drunk alcohol, or are taking medication that could affect your vision, judgment, or coordination.Never use a machine that has been modified or is faulty.Ensure all covers, guards, and handles are fitted before starting.The machine operator must ensure that no people or animals come closer than 15 meters while working.Be aware that the ignition system produces an electromagnetic field that may interfere with pacemakers.Never start the machine indoors or in a badly ventilated area due to the risk of carbon monoxide poisoning.Personal Protective Equipment (PPE): Always wear approved eye protection. If using a visor, you must also wear approved protective goggles. Wear hearing protection that provides adequate noise reduction. Remove it as soon as the engine stops. Wear a protective helmet where there is a risk of falling objects. Wear approved protective gloves when necessary, such as when fitting cutting attachments. Wear sturdy, non-slip boots with steel toe-caps. Wear clothes made of a strong fabric, avoiding loose clothing, jewelry, shorts, sandals, or bare feet. Secure hair above shoulder level. Always have a first aid kit nearby. Machine Operation: Stop the engine before doing any work on the cutting attachment. Disconnect the HT lead from the spark plug. Never use a cutting attachment without an approved guard. Avoid cutting with the area of the blade between 12 and 3 o'clock to reduce blade thrust. Stop the engine and cutting equipment before removing material wound around the blade shaft. Keep the cutting attachment below waist level. Switch off the engine before moving to another area. Fit the transport guard. Never put the machine down with the engine running unless you have it in clear sight. Always use full throttle when starting to cut with the blade. Avoid stones. Watch out for thrown objects. Keep unauthorized persons, children, and animals outside the 15-meter safety zone. Fuel Handling: Take care when handling fuel. Be aware of the risk of fire, explosion, and inhaling fumes. Fuel and fuel fumes are highly inflammable and can cause serious injury. Observe caution and ensure adequate ventilation. Do not smoke or place hot objects near fuel. Shut off the engine before refueling and let it cool. Open the fuel cap slowly to release excess pressure. Tighten the fuel cap carefully after refueling. Move the machine away from the refueling area before starting.