How To Adjust A Husqvarna Trimmer Carburetor 125

How to Set Up a Carburetor On a Husqvarna Chainsaw AURAMM.RU

How to set up a carburetor on a chainsaw: tips

Chainsaw carburetor. This is one of the main components of this tool. He is responsible for the supply of fuel. This article is just the first thing you should generally inspect the carburetor and trimmer ;. The efficiency and power of the equipment depends on how correctly this unit works. Let’s try to figure out how to adjust the carburetor on the chainsaw yourself. Timely adjustment also provides cost-effectiveness.

Before setting up a carburetor on a chainsaw, you should find out that adjusting this part of the device is quite rare. Usually, the factory option is enough for normal operation. How to adjust the carburetor on a Husqvarna 137 chainsaw. But if you need more precise adjustment, you can use special screws. Before similar work, you need to understand the intricacies and aspects of the process.

When carb adjustment is required

If it turned out that the adjusting screws were loosened, then the carburetor should be adjusted. In addition, other signs may indicate the need to implement these manipulations, among them:

  • breakage of the protective cap;
  • significant piston wear;
  • outages in the motor;
  • powerful vibration;
  • lack of response from the motor when trying to start the tool;
  • increase in fuel consumption;
  • strong surge.

Additional signs

If piston wear has occurred, then it will be necessary to repair the motor, but adjusting the carburetor will be a temporary measure, while the unit will begin to work more slowly. If the described unit turned out to be clogged, which led to interruptions in the motor, then it will be necessary to perform a flushing.

Whereas when a situation arises when the engine stalls or does not start, we can conclude that the working mixture was depleted. Incomplete combustion of the fuel consistency also shows a plentiful emission. This conclusion can be reached if the tool began to expend fuel in an extremely large amount.

Preliminary manipulations

How To Adjust A Husqvarna Trimmer Carburetor 125

In order to get to the carburetor, bolts are unscrewed on the tool cover. The housing must be opened and the foam rubber, also parts of the air filter must be pulled out. To finally prepare the carburetor for how. However, how to adjust? Only now you can begin to adjust. Before setting up a carburetor on a chainsaw, you should find out that the main task of these works is to change the quantity and properties of the air-fuel consistency, which is pumped into the combustion chamber of the engine.

During operation, you must be governed by certain rules, among them:

  • the chain needs to be brought to the side;
  • the equipment should be laid on a flat surface;
  • Cutting parts must be removed at a non-hazardous distance.

The first requirement is justified by the need to exclude injury. If you wondered how tune carburetor on a chainsaw, you should be aware that you need to produce these works using three screws. The first of them controls the jet and is indicated by the letter "H". It is needed to adjust the highest revolutions.

The second screw can be found in the letter “L”. This unit is needed to control the idle jet at low shaft speeds. Quite often, novice masters wonder how adjust carb on the “Partner” chainsaw. In it, the third screw is indicated by the letter "T". It is needed to adjust the idle speed. How to adjust the carburetor to choose a professional chainsaw. July 3, 2017. The adjustment process is divided into stages:

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    Why do I need to adjust the Husqvarna carburetor? The carburetor is one of the principal mechanical components where the chainsaw consists. In his tasks. mixing fuel with air and supplying the resulting composition to the engine. But in the process of working a gas train.

    Setting the carburetor chainsaw. Or how not to pay repairmen! Owning a chainsaw in the majority makes life easier even for an amateur, in some professions Such an instrument is practically indispensable. However, like any relatively complex device, chainsaws.

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    How to set up a carburetor on a chainsaw: tips This is one of the main components of this tool. He is responsible for the supply of fuel. The efficiency and power of the equipment depends on how it works correctly.

    The first is carried out with the engine turned off, while the second is on a warm engine.

    Basic adjustment step

    First you need to use the revs. They are wrapped all the way clockwise. Then they turn back one and a half turns.

    Final stage

    Before as adjust carb on a chainsaw " Husqvarna", You need to find the third screw, which is indicated by the letter" T ". 4.1 frequent failure of a Stihl carburetor and how to set up a carburetor on a chainsaw. Then the engine warms up for 10 minutes at medium speed. The third screw must be turned counterclockwise, waiting for the motor to start working stably. The chain must be motionless.

    How to properly adjust the carburetor on a Husqvarna chainsaw

    How to tune the carburetor on a chainsaw Husqvarna Adjustment carburetor on the chainsaw using 3 THL screws.

    Doesn’t Start or Starts Bad

    Why does not start chainsaw.Reason: How to fix it.

    If the motor stalls idling, the screw should be turned clockwise. When the target moves, the screw is twisted back. If you are faced with the question of how to set up a carburetor on a chainsaw, in the next step you should check how correctly the engine operates at maximum speed during acceleration. Adjusting the carburetor on the Husqvarna chainsaw after we set up. It should be assumed that the engine functions correctly during acceleration if, when the accelerator is pressed, rpm increases to a maximum value between 2800 and 15000. The screw marked “L” must be unscrewed to the left by an eighth of a revolution.

    Maximum RPM Adjustment

    Before as adjust carb on the “Partner 350” chainsaw, you must find the “H” screw. It is necessary to adjust the maximum speed. It should be rotated clockwise, while if it is necessary to reduce the number, then the movement of the screw should be directed in the opposite direction.

    The maximum frequency should be set between 11500 and 15000 rpm. If this value is exceeded, the engine will run to wear, which will certainly lead to a violation during ignition. When rotating the screw under the letter "H", you must take into account how the ignition occurs. If a malfunction occurs, the rotation should be stopped by turning the screw counterclockwise.

    Idle check

    You should know how to set up a carburetor on a Chinese chainsaw. If you have correctly adjusted the carburetor on the chainsaw, the following tests will show. In this case, a further check is carried out at idle. As soon as the adjustment in acceleration mode has been completed, it is necessary to bring the tool to idle. If you did everything correctly, the chain will remain stationary, and the motor will gain momentum in a short time when you press the accelerator.

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      Why do I need to adjust the Husqvarna carburetor? The carburetor is one of the principal mechanical components where the chainsaw consists. In his tasks. mixing fuel with air and supplying the resulting composition to the engine. But in the process of working a gas train.

      Setting the carburetor chainsaw. Or how not to pay repairmen! Owning a chainsaw in the majority makes life easier even for an amateur, in some professions Such an instrument is practically indispensable. However, like any relatively complex device, chainsaws.

      Do-it-yourself Husqvarna 137, 142, 240, 365 chainsaw repair. videoThe Chainsaw is an indispensable assistant for every real owner. Since the inception of the tool, its popularity has grown rapidly. So, the Husqvarna 142 chainsaw has a high…

      How to set up a carburetor on a chainsaw: tips This is one of the main components of this tool. He is responsible for the supply of fuel. The efficiency and power of the equipment depends on how it works correctly.

      You should also listen to the engine. The sound should look like a four-stroke unit. If you are thinking about how to properly set up a carburetor on a chainsaw, you should make sure that the above conditions are met. If this is not so, then the adjustment must be repeated, while the basic stage is omitted. You should not take up the job if you do not have enough experience, because in this case the knot deregulation may occur. When self-tuning is not possible, stable work can be achieved by contacting professionals.

      The nuances of adjusting the carburetor chainsaw brand "Stihl MS 250"

      You may have a question about how to configure carburetor on the Stihl chainsaw. How to adjust the chainsaw carburetor using how to adjust the Carver chainsaw ;. First you need to decide when such a need arises. The described work may be required if the spark plug electrodes have changed color. When it turned out to be black, this indicates re-enrichment, while with a brick-gray color you can be calm, as this is the norm. I have dangling carburetor mounting studs on a chainsaw blade. How can I change it? When the master notices a white coating, he can be sure that the mixture is depleted.

      The main role in the adjustment is played by the upper screw; it is located closer to the muffler in the described model. If you follow the factory parameters that you can find on the tool cover, then this screw must be unscrewed one turn, and then carry out the adjustment. When unscrewing, the mixture will be enriched, whereas if the screw is screwed in, the mixture will be depleted, while less gasoline will get into the air-fuel mixture.

      Recommendations of the specialist for working with the carburetor of the Druzhba chainsaw

      Before setting up the Druzhba chainsaw carburetor, you must perform tool maintenance. It involves flushing the engine, cleaning the carburetor, replacing the spark plug, checking the chain tension, cleaning the air filter, warming up the engine and adjusting the idle speed. As soon as the screws “H” and “L” are fully tightened, they must be unscrewed one turn. Do this with a muffled chainsaw.

      Then the tool warms up, full throttle is given, and the first of the mentioned screws rotates in such a way as to reach 14,000 revolutions per minute. The maximum speed should be held for 10 seconds or less.

      By turning the last screw, make sure that the chain begins to move. How to set up a Husqvarna 365 saw; saw Husqvarna 435 tire 18. Maintenance and repair. Then the bolt is turned a quarter of a turn counterclockwise. If after this the idle speed is not so stable, and the tool accelerates slowly, the screw marked “L” must be turned counterclockwise, only then chainsaw will gain momentum.

      It is important to remember that adjustment will not work if air is drawn into the engine from the side. This can happen through:

      • accelerator pump;
      • carburetor;
      • gasket under the carburetor;
      • crankshaft oil seals.

      After completing the procedure, the engine of the tool can be started by warming it for 10 minutes. In this case, you can set the average speed. Then you can do the idle screw.

      Conclusion

      For work, you will need not only a flat surface, but also a tachometer, by which you can identify violations in the operation of the adjustable unit. When the revolutions of the screws, the sound should be even, if you notice a squealing note, then this indicates that the mixture is oversaturated.

      If you do not have enough experience, then before starting work, you need to familiarize yourself with the principle of the carburetor, which functions in the same way as an internal combustion engine. How to achieve the best, consider the adjustment option on the popular Husqvarna chainsaw. This provokes a small explosion that occurs in the ignition cylinder of the mixture. How to adjust the carburetor on a chainsaw with your own hands? Pressure from this process pushes the piston, which rotates the crankshaft. The movement develops into a rotation that moves the chain through the sprocket. With optimal operation, the engine consumes up to 10 mg of fuel in each cycle. Whereas the mixture for the motor is prepared in the carburetor.

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      Husqvarna chainsaws (Husqvarna). features, breakdowns, models

      Husqvarna is a leading manufacturer of saws in the modern market. It produces petrol tools that can be used for private and professional purposes.

      The manufacturer launched the manufacture of chain saws in 1920. Since then, he presented to the market interesting and modern developments that impress with their high quality. At first, all Husqvarna tools were produced in factories in Sweden, but now the company’s facilities are also located in Brazil, the USA, France, China, and Poland.

      Information about the Chinese chainsaw in your hands or an analogue from another country can be found on the manufacturer’s website. But it is worth considering that absolutely all products pass quality control.

      Husqvarna chainsaw device:

      • a new type of engine;
      • comfortable handles;
      • strong tire with a saw chain;
      • noise reduction system during sawing;
      • protection for the right hand;
      • two plastic tanks for fuel and oil;
      • resistant to any load case.

      Why do I need an instruction manual?

      Each product is completed with instructions. It should be carefully studied in order to use the product correctly and to prevent its breakdown. It is also important to adhere to all prescribed recommendations.

      Husqvarna Chainsaw Carb Adjustment

      If the required power is not gained, it is necessary to adjust the carburetor on the Husqvarna chainsaw. Such a procedure can be carried out at home with the help of screws H, T, L.

      Husqvarna chainsaw carburetor adjustment occurs in the following sequence:

      1. First warm up the tool motor by turning it on for five minutes.
      2. Next, turn screw L until the maximum speed starts.
      3. After that, turn the screw a quarter turn immediately in the other direction.
      4. Press the trigger and hold it in this position for 10 seconds. Turn screw H a quarter of a turn at the same time.
      5. Release gas and turn screw T clockwise.
      6. When the chain starts to rotate, the screw must be turned back until the bus stops.

      After these manipulations, the Husqvarna chainsaw should begin to gain momentum and work efficiently.

      Husqvarna Chainsaw Sprocket Replacement

      If the saw does not start or starts to stall when the maximum speed is set, then the clutch is worn out. Its repair consists in a complete replacement of the mechanism.

      1. Remove the air filter and spark plug.
      2. Next, you need to remove the sprocket from the Husqvarna chainsaw and inspect for clogging.
      3. Unscrew the clutch coil and take out a clamping washer.
      4. Next, install a new clutch and replace the sprocket.

      At the end, assemble the mechanism and test the saw. If the parts were installed correctly, the tool will easily gain momentum. But it is worth considering that at first the operation of the device will be accompanied by ringing. They will stop when the star completely falls into place.

      The ratio of gasoline and oil for Husqvarna chainsaw

      Each model runs on a fuel mixture that consists of at least 90 brand oil and gasoline. Husqvarna chainsaw fuel mixes in this ratio:

      • for products with a capacity of less than 2 liters. with. you need to mix gasoline and oil in a ratio of 1:40;
      • for tools with a capacity of more than 2 liters. with. mix gasoline and oil in a ratio of 1:50.

      Running the Husqvarna chainsaw

      It is carried out for a new chainsaw or for an old device after major repairs. Running-in allows all parts to rub against each other and develop maximum speed. It can also be used to increase tool life.

      Break-in Rules

      1. Warm up the chainsaw for 2-3 minutes. No need to cut branches, let the device idle.
      2. Start cutting small branches and work like this for about half an hour.
      3. Try cutting a large tree.

      Be sure to read the instructions before work and follow its advice.

      Why doesn’t the Husqvarna chainsaw start?

      First, make sure the correct algorithm for starting the tool. Also check for fuel. If you are doing everything right, and there is a lot of fuel mixture in the tank, you need to look for another reason for the breakdown.

      In general, the Husqvarna chainsaw will not start in the event of a malfunctioning ignition or inability to supply fuel.

      • First check the candle. If it is wet or clogged, it must be cleaned or replaced. The problem may lie in the coil, but replacing it with your own hands is difficult.
      • Check fuel system. If there are breakouts or cracks, they must be repaired. Also clean the fuel filter.

      If everything was done correctly, but the saw does not work, contact professional craftsmen.

      Why is the Husqvarna chainsaw chain not lubricated?

      If the chain does not spin, then there is no lubricant supply to it. Have to inspect the entire oil system and identify the cause of the malfunction.

      • Problems with the oil pump.
      • Holes or holes in the tank.
      • Filter clogged in the tank.
      • Incorrect work breather.
      • Hose rupture through which oil is supplied.
      • Clogged channels.
      • Gear problems.

      How to start a Husqvarna chainsaw?

      To start working with a saw, you need to adhere to the following algorithm of actions.

      1. First you need to activate the chain brake.
      2. If there is a decompression valve button, press it.
      3. Turn on the lever that switches the modes.
      4. Put the saw on a horizontal surface, put your right foot on the rear handle. Grasp the front handle with your left hand.
      5. Start the saw using the starter grip. It may need to be pulled several times.
      6. Press the mode lever, while the throttle should be half open.
      7. Set the speed and release the chain brake.

      If you need to start the saw with the engine warm, do not use the mode lever.

      Husqvarna chainsaw stalls when gas is pressed

      Inspect the spark plug and repair or replace it. The cause of the failure lies precisely in it or in the cessation of fuel supply.

      • If the candle is wet, then the carburetor is out of order. It is necessary to carry out its diagnosis and adjust.
      • If there is no fuel supply, check the entire fuel system and its hoses.

      Husqvarna Chainsaw Lineup

      The assortment of the company is household, semi-professional and professional saws of high quality. Below we offer an overview of the main and most popular tools.

      Husqvarna 235 chainsaw

      The professional model has a thoughtful design, a well-balanced device. Due to its modest size, it is easy to transport.

      Main characteristics:

      • engine power is 1.7 liters. with;
      • the chain got a size of 30 cm;
      • fuel tank. 300 ml;
      • oil tank. 200 ml;
      • weight. 3.5 kg.

      Husqvarna 440 chainsaw

      The tool cuts down small and medium trees. It can be used for harvesting wood for the winter. The thought-over design provides smooth and safe work with a saw.

      Video: How To Adjust A Husqvarna Trimmer Carburetor 125


      The Husqvarna 440 chainsaw has the following characteristics:

      • engine power. 2.2 liters. with;
      • the tire has a size of 40 cm;
      • fuel tank. 370 ml;
      • grease reservoir. 250 ml;
      • weight. 4.8 kg.

      Husqvarna 61 chainsaw

      A compact household saw quickly cuts even old branches. It can be used for logging.

      Specifications:

      • power in the instrument is 3.9 liters. with;
      • chain size. 45 cm;
      • oil tank. 400 ml;
      • fuel tank. 750 ml;
      • weight. 6.6 kg.

      Husqvarna 372xp chainsaw

      A productive saw is needed for felling, processing building materials, sawing thick posts. With this model, you can use company branded nozzles. They increase the functionality of the tool.

      Main characteristics:

      • power at the level of 5.5, l. with;
      • chain size. 50 cm;
      • grease reservoir. 400 ml;
      • fuel tank. 770 ml;
      • weight. 7 kg.

      Husqvarna 545 chainsaw

      A quality tool for working with thick wood, processing medium and small branches. There is vibration suppression technology, inertial brake.

      The Husqvarna 545 chainsaw has the following characteristics:

      • power: 3.4 liters with;
      • the tire has a size of 45 cm;
      • fuel tank. 530 ml;
      • oil tank. 270 ml;
      • weight. 5.4 kg.

      Husqvarna 555 chainsaw

      Semi-professional model, which is used in the garden, at sawmills. She quickly cuts bulk pillars, can harvest firewood for the winter. An inertial brake and a vibration damping system are provided.

      Husqvarna 555 chainsaw has the following characteristics:

      • power is 4.3 liters. with;
      • the tire has a size of 50 cm;
      • fuel tank. 650 ml;
      • oil tank. 330 ml;
      • weight. 6 kg.

      Husqvarna chainsaw 357 xp

      The model is most often used in utilities. It economically consumes fuel and has a long service life. The saw also performed well in garden plots.

      Main characteristics:

      • power of the model is 4.3 liters. with;
      • chain size is 45 cm;
      • fuel tank. 680 ml;
      • oil lubrication tank. 380 ml;
      • weight. 6 kg.

      Husqvarna 339 xp chainsaw

      Household tools suitable for sawing trees in the garden, preparing firewood for the winter. It has modest parameters, but is highly stable.

      Main characteristics:

      • the model has a capacity of 2.45 liters. with;
      • chain size. 35 cm;
      • capacity for fuel. 360 ml;
      • capacity for oil. 200 ml;
      • weight. 5 kg.

      Husqvarna 445 chainsaw

      A simple and productive saw can cut small and medium branches. It is used for harvesting firewood for the winter. It has a thoughtful design.

      Main characteristics:

      • model performance: 2.2 liters. with;
      • chain size. 40 cm;
      • fuel tank. 370 ml;
      • grease tank. 250 ml;
      • product weight. 5 kg.

      Husqvarna T435 chainsaw

      A professional model is great for working at heights. It accelerates quickly and can show good results even at low revs. Fuel consumption reduced by 20%.

      Main characteristics:

      • power is 1.5 kW;
      • the chain has a length of 35 cm;
      • rotation speed. 19.1 m / s;
      • weight. 3 kg.

      Husqvarna 395xp chainsaw

      The tool is used to care for small areas. He can also cut trees in the forest.

      Main characteristics:

      • model power is 6.66 liters. with;
      • chain size. 60 cm;
      • tanks for lubrication and fuel. 500 ml and 900 ml, respectively;
      • saw weight. 8.1 kg.

      Husqvarna 359 chainsaw

      The product copes with a voluminous tree and is well suited for deforestation. It can also be used to care for the garden.

      Main characteristics:

      • the tool has a capacity of 3.9 liters. with;
      • chain size. 40 cm;
      • tanks for fuel and oil. 680 ml and 380 ml, respectively;
      • device weight. 5.8 kg.

      Each chainsaw is a standard of reliability, the highest quality and productivity. Such models have proven themselves in performing the most difficult tasks.

      Idling Adjustment In Husqvarna 365 AURAMM.RU Chainsaw

      Carburetor adjustment Husqvarna 372 XP, 365

      Adjusting the carburetor of the Husqvarna 372 XP chainsaw involves adjusting the engine to local criteria, such as climate, altitude, gasoline quality and type of oil for 2-stroke engines.

      The carburetor is equipped with 3 regulation abilities:

      L = Low speed jet.
      H = High speed jet.
      T = Screw for idle adjustment.

      The nozzles L and H control the amount of fuel so that it corresponds to a clot of air supplied by the throttle of the gas handle.

      If the nozzles are screwed in clockwise, the mixture will be poor (less fuel relative to the amount of air), and when unscrewing the nozzles counterclock-wise, the mixture will be richer.

      A poor mixture gives higher revs, and a richer mixture. lower revs. Screw T adjusts the position of the shutter at idle.

      If the screw T is turned clockwise, the number of idle turns will increase, provided that the screw is turned counterclockwise, the number of turns will decrease.

      Preliminary adjustment and running-in of the Husqvarna 365 XP chainsaw

      When checking the work at the factory, a preliminary adjustment of the carburetor was performed. Preparatory adjustment: N = 1 revolution, respectively L = 1 revolution.

      So that the details of the Husqvarna saw motor receive sufficient lubrication (break-in), the carburetor is set to slightly overcharge the fuel consistency for the first 3-4 hours of operation.

      For such an installation, the highest number of revolutions is set at 6-700 rpm below the recommended one.

      If there is no ability to check the highest number of revolutions with a tachometer, then jet N is not required to be installed on the fuel mixture below the preparatory unit.

      It is forbidden to exceed the highest number of revolutions. If the chain of the chainsaw rotates at idle, then by turning the screw T counterclockwise, it is necessary to achieve its working stop.

      Fine adjustment of the carburetor of the Husqvarna 365, 372 XP chainsaw

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      After running in the Husqvarna 372 XP chain saw, you need to fine-tune the carburetor.

      First you need to adjust the nozzle L, then the idle screw T and after this fact the nozzle N. The next highest number of revolutions is recommended: 12500, at idle speed 700 rpm.

      At the time of adjustment, the air filter must be spotless and the cylinder cover is set to its destination.

      When adjusting a carburetor with a dirty air filter, the fuel mixture will be very poor when the air filter is cleaned or replaced the next time.
      A very lean mixture will damage the motor.

      Carefully tighten the nozzles L and H to the bottom and then turn them 1 turn. Now the carburetor is set to H = 1 and L = 1.

      How to properly adjust the carburetor on a Husqvarna chainsaw

      How to tune the carburetor on a chainsaw Husqvarna Adjustment carburetor on chainsaw using 3 THL screws.

      Husqvarna. Idle upgrades. Carburetor repair. Carburetor adjustment.

      Promotions single on the Husqvarna chainsaw 555.

      Start the gasoline saw and let it run for approximately 10 minutes.

      Place the Husqvarna 365 chain saw on a level surface so that the saw bar is oriented in the opposite direction from you, and so that the bar and chain are in contact with the surface.

      Low speed jet L

      Find the highest idle speed by slowly turning the low speed jet clockwise and counterclockwise.

      When the highest number of revolutions has been found, turn the jet L counterclockwise by 1/8. 1/4 revolutions.

      Clear idle speed setting with screw T

      The idling is carried out by the screw indicated by the letter T.

      If adjustment is necessary, then the idling screw T should be turned clockwise until the chain starts to turn.

      Then turn the screw counter-clockwise arrows until the chain stands motionless.

      Correct is considered such a number of revolutions when the chainsaw engine runs exactly in numerous positions with sufficient supply to that number of revolutions when the chain starts to spin.

      High speed jet N

      Read also

      The high-speed jet N controls the power of the Husqvarna 372, 365 XP and number of revolutions.

      A mixture that is too lean on a high speed jet gives increased saw revolutions and creates a risk of engine damage.

      Run the saw at full throttle for 10 seconds. H = 1.

      Then turn screw H 1/4 turn against clockwise. H = 1 1/4.

      Then let the chainsaw run for another 10 seconds and listen to the difference in sound at maximum speed. Repeat the procedure with adjusting screw H turned 1/4 turn counterclockwise. H = 1 1/2.

      Now the saw works at Н ± 0, Н = 1/4 and Н = 1/2, based on the preset. At full throttle, the sound of the engine will be different for each installation.

      Jet N is considered to be correctly installed when the chain saw is operating with little noise at full throttle without load.

      If a lot of smoke comes out of the muffler and the saw is noisy, then the mixture is excessively rich.

      Turn jet H clockwise until you get the setting with the correct sound.

      Correctly adjusted carburetor chainsaw Husqvarna 365, 372 XP

      The carburetor is correctly adjusted when the saw is gaining momentum confidently and when it is working with little noise at full throttle without load.

      The chain should not rotate at idle.

      If the mixture is excessively lean on the nozzle L, engine start-up may be difficult and the engine will not accelerate well.

      When installing nozzle H on an excessively lean mixture, the saw power will be lower, it will not gain speed well and / or this may damage the engine.

      An excessively rich mixture on the L and H jets creates problems when gaining speed or gives too low working speeds.

      HUSQVARNA

      Technical specifications Husqvarna 372 XP

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      Husqvarna 235 chainsaw carburetor adjustment

      The standard position for carburetors of the “Chinese” is the position of the screw L, in which it is weakened by one and a half turns from the fully clamped position. For screw H, one revolution from the same state. On many videos, screw L is called adjusting the quality of the mixture, and screw H is called its quantity. Idling is regulated in the same manner as described above on a warm engine.

      Home »Carburetor Adjustment Braids Husqvarna 235 Р

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      Trimmers and Chainsaws

      Adjust the Husqvarna carburetor if:

      And, so that the Husqvarna engine works as it should, and so that the maximum efficiency of the trimmer (gasoline, motorcycle) is ensured.

      Husqvarna carburetor adjustment

      Before setting up the Husqvarna, perform trimmer maintenance (wash the gasoline engine and engine, replace the spark plug, and remove minor defects).

      Be sure to wash the foam element of the air filter. Wash the item in warm water with soap, then squeeze and dry (or replace if it is old or damaged).

      The note: if you adjust the Huskvarna carburetor with a dirty air filter, after cleaning the air filter, the fuel mixture will become much poorer (which can lead to poor performance or even engine failure).

      Install a trimmer with a cord of maximum diameter and standard length (up to the cutting disc in extra protection) to create a load on the engine while adjusting the Husqvarna carburetor high-speed screw.

      Start the gas pump in accordance with the Husqvarna Manual and warm it up for 10 minutes (if the trimmer head rotates at this idle, then the idle screw, i.e. the lower one, must be turned counterclockwise until the rotation of the trimmer head stops )

      Carefully rotate both needles (left and right) to the middle position between fully turned and fully screwed (do not turn it all the way! This could damage the Husqvarna engine).

      Read the same

      The adjusting screws for adjusting the Husqvarna carburetor are three: right, left and below.

      1) The correct screw L. regulates the enrichment of a low-speed mixture (first regulated):
      Find the maximum idle speed by slowly turning the right screw to the right and left.
      Then turn this screw 1/4 turn counterclockwise.
      Note. At the Husqvarna factory, the right screw was completely twisted (0.5 turns). Now he is looking at 11 o’clock.

      Husqvarna 125R carburetor tuning without tachometer (temporary solution)

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      2) Bottom screw T. adjusting the idle speed of the Husqvarna engine (if necessary): turning the screw clockwise increases the idle speed, counterclockwise decreases it.

      It is considered correct to adjust the idle speed when:

      1. A cold engine is idling stably.
      2. A hot engine does not have too high idle speed.
      3. Before rotating the trimmer head, a sufficient margin of revolution remains.
      4. The engine runs stably in any position (for example, when the knife drops sharply).

      The note: From the manufacturer (Husqvarna), the idle screw from fully tightened was tightened 8 full turns and “2 hours” (now it remains). The recommended idle speed of the Husqvarna gasoline engine is 2,900 rpm.

      3) Left screw H. adjusts the enrichment of a mixture of high speed (adjusted in the last turn).
      It controls maximum speed, engine power, temperature and fuel consumption.

      The note: The Husqvarna engine must not run at full power for more than 10 seconds!

      • Open the throttle fully (give a full throttle) and slowly turn the left screw clockwise until the Husqvarna engine speed decreases (by ear).
      • Then slowly turn the left screw counterclockwise until the engine starts to run unevenly.
      • After that, slowly turn the screw clockwise a small distance until the Husqvarna engine starts to run smoothly.

      Read the same

      Husqvarna is over on this setup.

      The note: Recommended Husqvarna maximum high speed engine. 11 500 rpm.
      The maximum output power of the Husqvarna 333R gasoline engine is 1.6 kW (2.1 hp) at 8,400 rpm.

      The note: On the new Husqvarna trimmer from the manufacturer (Husqvarna), the left screw was completely unscrewed (0.5 turns) and locked (cast) with hard plastic, which I drilled after the warranty expired. Now the left screw (like the right one) looks like about 11 o’clock.

      We verify the correct configuration of the Husqvarna carburetor

      The engine quickly, confidently and confidently picks up speed, and a little four times at maximum speed, the head of the T-35 trimmer at idle should not rotate.

      Reference. Read to understand what you are doing!

      The required composition (quality) is air- (changing), turning the adjustments into the intake air flow (right and left). The amount of mixture supplied to the cylinder is dosed by the throttle.
      If they are turned clockwise, the mixture that is sucked into the cylinder is depleted (less fuel in the air / fuel ratio), and the engine speed increases, and the Husqvarna engine is softer (it is slowly gaining speed), and the power decreases. In addition, with increased speed, less oil is supplied to the cylinder on a lean mixture (lubrication is worse), and therefore the engine may be damaged. Well, the trimmer will be bad.
      If the screws turn counterclockwise, the mixture sucked into the cylinder enriches (more fuel in the air / fuel ratio), and the engine speed decreases, and at low speeds more gasoline and oil gets into the cylinder (better traction, better lubrication), but the engine Husqvarna “Deflections” is bad (gaining momentum) and forms more carbon deposits in the cylinder!

      A chainsaw is an indispensable tool for people living in private households. It is a mechanism consisting of carefully fitted parts and assemblies.

      Like any mechanism, it requires periodic care and adjustment. Especially because of low-quality fuel. Consider the principles and procedure for adjusting the carburetor of a Husqvarna chainsaw.

      The device and the principle of operation of the carburetor

      The carburetor is used to prepare the combustible mixture in the proportion determined by the operator from gasoline and air.

      Overly enriched, as well as overly poor, the mixture will lead to unstable engine operation, can cause overheating and accelerate piston system wear.

      The proper functioning of the device depends on the proper settings and adjustments.

      And for this, you need to know the principles of the carburetor of the Husqvarna chainsaw.

      Its design consists of the following elements:

      • case with clamping bolts and a set of gaskets;
      • fuel pump. a device that injects a gasoline-oil mixture into a carburetor;
      • diaphragm. designed to limit the flow of the combustible mixture into the engine;
      • float chamber. fuel is collected in it, the level is regulated by the float, as necessary, the mixture is fed into the main chamber for mixing with air;
      • the main chamber. air passes through it, and fuel is injected there, the amount of the mixture supplied to the engine is regulated by the throttle located here;
      • diffuser. a section of the narrowing of the tube supplying air at the fuel injection site;
      • needle valve. a device that regulates the supply of fuel;
      • jet. screws that control the flow of the mixture at high and low speeds, as well as the idle screw.

      Also in the carburetor device, in addition to the throttle, there is a damper located at the inlet of the air filter. It artificially reduces air flow, making the mixture more saturated to facilitate starting a cold engine.

      The injector valve is responsible for injecting fuel into the main chamber, it also prevents air from entering. When setting up a carburetor on a Husqvarna chainsaw, special attention should be paid to this valve, since its condition has a direct effect on engine operation. After prolonged storage, the nozzle may stick. This will limit the flow of fuel and prevent the engine from starting.

      Also, from prolonged use or due to factory defects, the valve can let air into the main chamber. In this case, only a replacement will help to fix the problem.

      The carburetor operates as follows: the air flow entering the diffuser is mixed with the injected fuel, the resulting mixture is fed into the engine. The amount of mixture is regulated by a butterfly valve. The larger the mixture, the higher the engine speed.

      When adjustment is needed

      The need to adjust the carburetor of the chainsaw is rare. Often there are problems with the flow of fuel, air or wear parts. But sometimes adjustment is still required:

      • A started engine stalls after a few seconds, or does not start. the reason for this is too rich a mixture;
      • excess exhaust, high revs, increased consumption. in this case, on the contrary, the mixture is too lean, that is, there is not enough air;
      • revolutions are kept at the same level after they are reduced or increased by the operator. the cause may be a sticky needle valve.

      Factors leading to such changes may be as follows:

      1. Strong vibration damages the protective cover, and the adjusting jets get out, changing the setting. In this case, it is possible to adjust the carburetor on the chainsaw.
      2. Deterioration of piston system components. Setting the carburetor in such a situation may provide temporary assistance. Replacing worn components is recommended.
      3. Poor fuel, a defective filter, or long-term storage can cause blockages. In this situation, the carburetor must be removed, rinsed with a special liquid or clean gasoline, collected and re-adjusted.

      It is best to start setting up the saw by checking the nozzles, the fuel and air supply. After that, proceed to dismantling the carburetor, and then to checking the piston system.

      What tool will be needed

      First of all, you need to prepare a tool for adjusting the carburetor of the chainsaw. You will need a set of screwdrivers and open-end wrenches, a special cleaning compound that dissolves soot and debris.

      Disassembly is best done on a table or workbench. On a part of the table, lay a flap of clean, preferably light and plain fabric, on which the removed parts and the washing container will be laid out. Optimal if it is an ultrasonic bath.

      How to remove the carburetor and whether it should be done before tuning

      In the event that the chainsaw does not develop revolutions or, on the contrary, works at excessively high, the carburetor can be adjusted without removing.

      But if the chainsaw does not start, the speed hangs at the same level or it works unstably. Setting the chainsaw carburetor will not change the situation. It must be removed to clean or replace parts. It is necessary to act in this order:

      1. Unscrewing the holding fasteners, remove the upper casing of the saw.
      2. We remove the gasket and part of the air filter by unscrewing the bolts or by clicking off the fasteners.
      3. To the right of the carburetor is the fuel hose. Remove it with the throttle control rod.
      4. We remove the carburetor from its fastenings.

      Dismantling the carburetor is carried out in accordance with the supplied instructions. When disassembling with extreme caution, it is necessary to fold the parts on a pre-prepared fabric. Due to the small size, there is a risk of losing components during disassembly and flushing.

      All parts thus obtained are washed in a special liquid, dried and wiped with a lint-free cloth.

      The channels, tubes and jets are purged with compressed air, if possible, pre-washing them in an ultrasonic bath.

      How to adjust

      For this, 3 adjustment jets are provided in the design of the device. The idle adjustment screw (T) is located at the top of the carburetor. Below is a pair of nozzles for adjusting the fuel supply at minimum (L) and maximum (H) rpm, left and right, respectively.

      The procedure for adjusting the carburetor on a Husqvarna chainsaw is as follows:

      1. Warm up for 5 minutes.
      2. Turning the screw L, we bring the engine to the highest speed in the unloaded state and return it a quarter of a turn.
      3. Hold the throttle button with one hand for 15 seconds. At this time, turn the jet H to the right until it stops and reaches maximum speed. Then we turn it back one and a half turns or until the “squeal” of the engine disappears.
      4. After releasing the gas, turn the idle screw (T) clockwise until the chain starts to move. After that, we rotate it in the opposite direction until the chain stops moving.

      During the adjustment process, a situation may arise in which the chainsaw stalls. This may be due to excessively twisted jets, too rich or poor mixture.

      If this happens, it is necessary to tighten the jets of minimum and maximum revolutions to the stop. Then turn them back one and a half turns and try to start a saw.

      Ignition adjustment after carburetor adjustment

      If cleaning and tuning the carburetor did not fix the existing problem, you need to check the spark plug and adjust the engine. You should act in the following order:

      1. A candle is twisted and a visual inspection is carried out. If it is dry with a light brown deposit, it can be considered healthy.
      2. If traces of gasoline are detected on the spark plug, the carburetor must be readjusted. This is because it delivers excess fuel to the engine, filling it.
      3. If the candle looks normal, check the operation of the electrical equipment. First of all, the cable that supplies current to the candle. The end is brought to a short distance to the radiator grill of the cylinder and the starter is scrolled with a cord. A spark should slip through. If not, check the cable with a tester and replace if necessary.
      4. If the cable is working, the ignition coil is tested. If the inspection does not reveal scorched or dangling wires, the coil is called a tester, comparing the data with the accompanying documentation. If deviations are found, the unit must be replaced with a similar one.

      After replacing the coil unit, set the gap in the magneto. The gap between the ignition coil and the flywheel should be between 0.2 and 0.4 mm. To set the gap, you need a set of probes or you can use a foil of suitable thickness. The probe is clamped between the coil and the flywheel at the time of installation, and then pulled out.

      How to understand that everything is done correctly

      After setting, you need to start the chainsaw. Check stability at idle. In this case, the chain should not move. When you press the accelerator, the chainsaw should steadily accelerate and stop without delay.

      At minimum and maximum speed levels, the Husqvarna 350 should work stably, without extraneous noise. At the time of operation there should not be a sharp loss of power or shutdown.

      How to Adjust the Husqvarna Chainsaw Idling

      Chainsaw carburetor adjustment in Husqvarna

      Husqvarna chainsaw (Husqvarna) 137. Carburetor adjustment.

      The best advice I can give you. this is to turn to specialists! Believe me, there is very little money, specialists will set up a carburetor, check the general condition of the saw. But if it is still necessary carburetor adjustment on a saw Husqvarna 137 I will try to describe this process in detail. A video on how to adjust carburetor chainsaw at idle.

      Adjustment and carburetor adjustment Husqvarna 137

      In the picture above, you see three screws for adjustment. Each of them has its own goal:

      To adjust the idle speed, screw T is required.

      Screw L is used to adjust low speed.

      Screw H adjusts high speed.

      Setting procedure:

      First screw L (turning it), we are looking for the highest speed at idle. After we found them, you need to turn this screw a quarter of a turn against the clock. If the chain continues to rotate in this position, then we turn the screw T to stop it.

      Then warm up the engine at full speed for 10-15 seconds and turn screw H a quarter against the hour. We wait 10 seconds and listen. the engine should work like a 4-stroke sound. If a squeal is heard, then the mixture is bad (we twist the screw), if the enriched mixture is smoky (tighten the screw).

      After adjusting the low and high speeds, set the idle speed using the T screw. This is done as follows:

      1. The engine should work

      2. Turn screw T clockwise until the chain starts to rotate.

      3. Turn the screw to the other side until the chain stops.

      With a properly tuned carburetor, your chainsaw quickly picks up speed and sounds like 4-stroke engines.

      Remember to adjust the tachometer and experience correctly. Therefore, it is better to contact a specialized service!

      Do-it-yourself carburetor adjustment on a chainsaw

      Adjusting the carburetor of the chainsaw ensures efficient operation of the tool at full power with economical fuel consumption. Adjustment must be made with a clean fuel and air filter. For adjustment, three screws are used: for maximum and minimum speed and idle.

      The H and L screws adjust the gas-air mixture ratio determined by the opening of the throttle carburetor. When the screws are loosened, the mixture is enriched, and turns accordingly fall; when twisting, the mixture is depleted. revolutions increase.

      The designation H refers to the maximum speed screw that controls the main jet, L. to the minimum speed screw that controls the idle jet. With screw S, the idle speed is precisely regulated. Sometimes, to facilitate adjustment, the number of carburetor adjusting screws available is reduced.

      The carburetor setting for the chain saw is divided into two steps. main (factory settings) performed when the engine is off. and the finale, released on a running hot engine. The exact angular values ​​should be taken from the operating instructions of the particular chainsaw. If the manufacturer’s instructions are not followed, the engine may be damaged.

      How to properly adjust the carburetor on a Husqvarna chainsaw

      How to tune the carburetor on a chainsaw Husqvarna Carb adjustment on chainsaw using three THL screws.

      Husqvarna. It works badly, it stalls. An interesting case

      Repairs Husqvarna Chainsaws.It works badly, it stalls. An interesting case.

      Basic carb adjustment.

      The adjusting screws with maximum H and minimum rotation L slowly turn clockwise until they stop, then they turn 2 turns, other settings are possible

      Check and adjustment of idling.

      We find the largest idle speed, for this, slowly turn the screw L in different directions. After determining the maximum engine speed, turn screw L 1/4 turn counterclockwise. If the chain idles, turn screw T or (S) fully clockwise.

      Check and adjust the maximum speed.

      Changing the maximum number of revolutions is carried out by screw H. When it is wrapped (clockwise rotation), when turning, the revolutions increase. are decreasing. Chainsaw engines have a maximum rotation speed of 11,500 rpm. up to 15000 rpm A higher speed does not provide ignition, in addition, it becomes dangerous for the engine. The maximum speed can be determined by interruptions in the ignition. If they come, screw H is slightly turned counterclockwise.

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        Tortsovka. Work (Work on a miter saw) Creator: Yuriy PrimachenkoPosted: 16 oct. 2015 Viewed: 172,363 I liked: 3,491 I did not like: 60 Do you like our channel? You can support him by buying one book from the video courses: Wardrobe in the.

        Let’s try to figure it out in order. Compared to gasoline saws, electronic ones have their special advantages: the engine part does not just have a working resource, they are used indoors, alas, these advantages will be crossed out by one drawback.

        If the engine is not tested for acceleration and maximum speed, the adjustment of the chainsaw cannot be considered complete.

        When the gas trigger is pressed smoothly, the engine must quickly and confidently turn from idle to maximum (from 2800 to 11500-15000 depending on the device). If rotation is slow, delayed, screw L should turn slowly counterclockwise, but no more than 1/8 turn.

        After adjusting the acceleration and maximum speed, the saw must be checked again at idle. the engine must run stably, the chain must not move. Chainsaw setting should be repeated if this condition is not met, but with the exception of the main adjustment step.

        Carburetor chain adjustment

        The carburetors of most chainsaws have three screws for adjustment:

        • L. jet screw for low speed adjustment
        • HOUR. high speed propeller
        • Screw. T from Partner and Husqvarna (near Stil Louisiana ) chainsaw adjustment idle

        The H and L screws adjust the gas-air mixture ratio determined by the opening of the throttle carburetor. When the screws are loosened, the mixture is enriched, and the revolutions increase accordingly, with grinding, the mixture is depleted. revolutions are falling.

        Screw T (LA) is used to adjust the idle speed. The main setup of the chainsaw is done at the factory at the end of the test. The carburetor is usually adjusted to deliver a richer (than optimal) fuel mixture. The factory setting should save the first hours of operation of the saw. Then (optional), the carburetor is tuned more precisely.

        The adjustment starts with the idling set, to do this, turn the screw T (LA) counterclockwise, reaching a complete stop of the circuit with a stable engine speed.

        For further fine-tuning, you need a tachometer, and it is best to trust specialists. especially since in most cases this may not be necessary.

        Adjust the tool with screw L, then use screw H and end screw T (LA).

        We find the largest idle speed, for this, slowly turn the screw L in different directions. After determining the maximum engine speed, turn screw L 1/4 turn counterclockwise. If the chain idles, turn screw T clockwise to the stop.

        Screw H adjusts power and speed. Adjusting the carburetor to lean mixture leads to excessive speed, overheating of the engine and failure of the piston chain saw.

        Warm up idle for at least 10 seconds and turn screw H 1/4 turn counterclockwise. Let the engine run for about 10 seconds. then check the maximum engine speed tachometer. If the maximum speed does not match the passport, the operation must be repeated. When the mixture is too rich, the muffler begins to smoke, when the saw is too lean, screeching and overheating.

        Finish the adjustment by adjusting the idle speed, as already described above. The idle speed is set correctly if the engine runs smoothly at minimum speed and the chain does not rotate.

        A carburetor can be considered adjusted if the engine accelerates quickly and sounds like a four-stroke operation with a full throttle.

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        Husqvarna chainsaw (Husqvarna) 240. specifications, adjustment

        The Swedish Husqvarna chainsaws are presented on the market with professional and household models. Excellent performance, durability, versatility make the manufacturer’s tools in demand in the global market. Reliability and durability are also ensured by the high-quality assembly of chainsaws, forged steel parts and durable plastic.

        Design and scope of use

        The use of the Husqvarna 240 chainsaw is not limited to standard logging functions. With its help, you can easily clean a large area of ​​shrubs and old trees, form crowns of ornamental plants in the garden, use it in construction to cut boards. Sufficient power and length of the tire allow sawing wood both along and across.

        The classic brand design is combined in this model with high technical characteristics and ease of use. Saw Husqvarna 240 belong to the class of household, but its performance is not much different from professional tools. Manufacturers have provided in this saw such necessary functions as easy start-up, double air purification, reduction of vibration level. Ergonomic control levers and handle contribute to maximum comfort during work, reduce the load on the operator. The main components of the mechanism are located in such a way as to speed up and simplify access to them in case of repair.

        If you follow the operating instructions and regularly carry out routine inspections of the chainsaw, repairs in most cases can be avoided. But even in the event of a breakdown, the tool will not cause you significant inconvenience. original spare parts can easily be purchased and replaced. The detailed structure of the Husqvarna 240 chainsaw is shown in the diagram below:

        Technical characteristics of the Husqvarna 240 chainsaw

        The basis of the Husqvarna 240 saw is a 2-stroke engine with a carburetor. It works on a gasoline-oil mixture. The motor resource is increased due to improvements in the crank assembly and the special coating of the cylinder. Fuel economy is reduced by 20% thanks to the innovative X-Torq system, which also reduces exhaust emissions. A capacious fuel tank and low fuel consumption extend the working time of the tool, without interruption for refueling.

        The rest of the saw has the following technical characteristics:

        • productivity. 2 l. with.;
        • chain pitch. 3/8 inch;
        • fuel tank capacity. 300 ml;
        • oil tank. 200 ml;
        • tire length. 40 cm;
        • weight. 4.7 kg.

        How to adjust the carburetor on a Husqvarna 240 chainsaw?

        Any equipment is subject to breakdowns from time to time. The main malfunctions of the Husqvarna 240 chainsaw are associated with the repair of the carburetor, other components of the fuel system, with malfunctions of the oil pump. In the event of an oil pump failure, the Husqvarna 240 chainsaw chain stops rotating due to lack of lubrication. Damage to the gas tank or fuel hoses can also be the reason why gasoline leaks from the saw. If the saw completely ceases to start, first of all you should make sure the quality of the fuel mixture, check the spark of the spark plug. If necessary, the candle is cleaned or replaced with a new one; carburetor is adjusted.

        Carburetor adjustment is also required in cases where the chainsaw starts to start poorly, stalls under load, and also if the type of fuel or operating conditions have changed. Carburetor tuning should be done after preliminary cleaning of the air filters and warming up the engine.

        Next, follow this algorithm:

        1. Screw L rotates to maximum. Then immediately return the screw a quarter turn back.
        2. While holding the throttle, turn screw N.
        3. Relieve gas and turn screw T clockwise until the chain starts to move. After that, immediately turn the screw back until the chain stops.

        The layout of the corresponding screws is shown below:

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