Adjustment of the carburetor of the gypsy saw Stihl. DIY carburetor repair

Adjustment of the Carburetor of the chainsaw of Stihl 260 with your own hands. Adjusting the carburetor of any chainsaw with your own hands. Sharpening and using a saw chain

The chainsaws of the German brand STIHL with each new modification provide the owners with an improved design and excellent characteristics. Stihl 211 chainsaws occupy their place in the lineup, which, for some reason, users are completely undeservedly deprived of attention. Manufacturers created this saw, given all the disadvantages of previous developments, as well as the wishes of customers. STIHL 211 is quite light, productive, economical. The tool belongs to the category of households, but its design and capabilities allow solving quite difficult problems, which makes this saw necessary for any private economy.

Using the Stihl 211 chainsaw is quite extensive. It is harvesting firewood, sawing wood for household or construction purposes, performing trees in the garden. The description characteristics allow you to saw trees with a trunk diameter of about 30 cm. Any types of work with this saw can be carried out safely and comfortable due to the improved design and balancing of the entire tool, the convenient location of the handles, the effective emergency brake.

Unlike similar tools of other brands, the Stihl MS 211 chainsaw has a reliable system of protection against vibration. There is also a filter with preliminary air purification, a system for reducing fuel consumption. Environmental friendliness during the operation of the saw is provided by the 2MIX system, which significantly reduces the amount of harmful substances in the exhaust gases.

This modification compared to earlier STIHL models has an improvement such as a quick start system (ergostart), a convenient mechanism for adjusting the tension of the chain. The saw capabilities can also be expanded due to the installation of a specially designed chain from a solid alloy, the working resource of which is increased by 4 times.

Бензопила STIHL MS 180 плохо заводится. ремонт карбюратора. Repair and carb tuning

Which tool is needed

In order to carry out adjustment and repair correctly, you must have a special tool. tachometer. With it, you can find out the exact most motor speed and adjust in accordance with the instructions. To configure the carburetor, use a slotted screwdriver that is suitable for most models. However, for some models you need an adjustment key.

Not all models of chainsaws can be adjusted at home, since special keys are located only in service centers operating from the manufacturer. Such measures were taken to prevent the occurrence of instrument malfunctions due to improper adjustments carried out by inexperienced masters.

STIHL MS 180, overview of sick places, adjustment.

Stihl chainsaws are considered the quality of quality. Capable of working for years without proper service, but they are not rarely acting aside.

adjustment, carburetor, stihl, repair

Good afternoon, dear subscribers and guests of the channel.

Not so long ago, a chainsaw STIHL MS 180 came to my repair. In fact, a rare guest in my workshop is much more likely to carry the “Chinese”, which are made of “g”, and therefore do not work for long.

The 180th had problems with bearings and seals from the leading star. Everything is clear, this is not a disease, but the “crooked” hands of the owner, who does not know how to pull the chain correctly and certainly does not weaken it after work, although this must be done for sure. Especially in winter.

The chain heats up during operation, the metal expands and it becomes a little longer. Naturally, it needs to be pulled to a normal state, but after work it is necessary to weaken differently the following happens: the chain cools and becomes shorter, an increased load on the links of the chain, the leading star and bearings arise.

At the end of the article, I will give recommendations on how to properly work and serve the chainsaw of the STIHL MS 180, which will help to significantly extend the life of the tool, but for now we will continue.

How to set up a carburetor on a Carver chainsaw

Holoid adjustment with a screw T always costs separately. If the Carver chainsaw engine stalls at idle, the reason for this may be:

  • poor spark plug;
  • loss of compression due to critical wear of the piston system;
  • bad fuel;
  • poor carburetor operation, not related to adjustment;
  • Paraffin filters in the tank and carburetor.

For the same reasons, the Carver chainsaw engine can work poorly not only on idle, but in general it does not pull, does not develop revolutions, stalls when the gas handle is pressed, etc.D. Therefore, first you need to try to deal with these reasons. And lastly, if the problems are not resolved, you can try to increase the idle speed by turning the screw t clockwise.

  • If the engine does not start at all on idle precisely because of the adjustment violation, the screw T is twisted at 1/2 or 3/4 revolutions and the engine is started.
  • Then they are regulated by ear with the engine, observing all safety measures. (With a strong increase in revolutions, the chain of the chainsaw may begin to rotate, and this is dangerous).
  • If the chain is spinning in idle, the screw T is unscrewed to the position in which the engine on idle works confidently and does not stall, and the chain does not spin.

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Then check the operation of the chainsaw engine in all modes. If it works stable on idle, but stalls when gas is pressed. a sure sign of a lack of fuel supply to the combustion chamber. With good operation of all systems, clean filters and a nozzle, the reason is most likely a violation of the adjustment of the screw L.

  • It is also better to adjust it on the warned engine of the Carver chainsaw, screwing it for 1/4 turnover and trying to gamut.
  • If the supply of fuel is too abundant, the engine will work as in idle when the handle position is positioned. This means that the screw L is twisted too much and it is necessary to twist it back in 1/4 turnover, trying to give gas.

If, after adjusting the screw l, the Carver engine does not give out the power necessary for operation, you can carefully try to increase the maximum speed adjustment of the screw N. It is also regulated by the engine, but in the position of “gas for the whole”. Extremely carefully, at 1/5, 1/6 part of the turning the screw is screwed and listened to the engine operation

Extremely carefully, at 1/5, 1/6 part of the turning the screw is screwed and listened to the engine operation

It is also regulated by the engine, but in the position of “gas for the whole”

Extremely carefully, at 1/5, 1/6 part of the turning the screw is screwed and listened to the engine operation

An increase in the ceiling of the revolutions can several extend the duration of the old chainsaw with a worn piston. Weak compression is compensated by a greater supply of the mixture at maximum speed.

Professional adjustment of the screw N is carried out using a tachometer to determine the ceiling of revolutions and oscilloscope to control the frequency of flashes on the candle. The compression is preliminarily checked.

After adjusting the screw N, a change in work in other modes may occur. Therefore, it will be necessary to try out work in all modes and, if necessary, slightly adjust the adjustment by screws l and t.

It is not always worth doing this for the following reasons:

  • With a strong twisting, the sharp end of the screw can destroy a jacket of loose powder bronze in cheap chainsaws, and this is a breakdown.
  • 1.45-1.5 turns from “to the end” may not correspond to the old position of the screws in which the chainsaws still worked until the last, and real factory settings.
adjustment, carburetor, stihl, repair

Therefore, it is necessary to regulate on the basis of the position “as it was” for no more than 1/4 turnover per appointment

It is important to remember how much and in which direction the position of the screw was changed

If you still need to wrap the screw “to the end”, they consider the number of revolutions from the position “as it was”, this will make it possible to return the settings to the previous position. Tighten “to the end” you need to effortlessly.

General principles of independent settings of the carburetor of the chainsaw are presented in the following

Adjustment of the Carburetor of the Stihl MS 660 chainsaw with your own hands

All carburetors on the Stihl MS 660 chainsaws take place of factory settings at equipped stands. This provides the best parameters of the ICE in all modes. The settings are extremely rare. Before adjustment, you need to verify its need. Deterioration of the operation of the internal combustion engine can be caused by other reasons:

If there are no problems with them, or they are eliminated, and the ICE works abnormally, they begin to adjust.

STIHL MS 660 chainsaw carburetor has three adjusting screws:

  • LA to adjust idle.
  • H to adjust the supply of fuel at large speeds (main screw).
  • L for adjusting the proportions of fuel and air (the quality of the mixture).

The screws l and h are located nearby, la at the distance from them. All of them have a marking on the case.

User manual

STIHL MS-660 chainsaw has a complex device, handling equipment requires compliance with a number of rules and safety measures.

  • general description of the product;
  • purpose and possibilities;
  • certification, manufacturer and dilere data;
  • unit device;
  • work of parts and mechanisms;
  • preparation for work;
  • recommended fuel and oil, refueling procedure;
  • Playing the product;
  • sequence and time of regulations;
  • possible failures, malfunctions and methods of eliminating them;
  • storage and conservation conditions;
  • Warranty obligations.

The document is written in an accessible language, visual illustrations and schemes help to understand all emerging issues.

Features and differences in the adjustment of the carburetor on the Chinese chainsaw

Carburetors on Chinese chainsaws are mostly copied with the original Stihl structure. Therefore, the adjustment algorithm on the original and Chinese versions is practically identical.

Non.original products are worse in that they use low.quality alloys, short.lived plastic parts (membrane and gaskets), the dimensions of calibrated holes are not accurately maintained, etc.D.

For introductory purposes, we recommend watching an interesting video about the Chinese chainsaw of STIHL MS 660. The chainsaws are completely disassembled, the condition of the components, including the carburetor, is evaluated. The author of the video also disassembles the carburetor and, by example, shows how to clean it from dirt.

Theory and principles of the fuel system, the design of the carburetor

The principle of operation of the carburetor

In various models of chainsaws, the structural device of the carburetor may differ, however, the principle of operation of this part is always the same: the injured air flow moves in the direction of the air (pulse) channel, the air is regulated by the air damper. Entering the pulse channel, air changes speed. The speed changes are affected by a special valve that covers the air intake hole. Fuel is supplying in the air channel, which is mixed with the air flow. As a result, a combustible fuel-air mixture is formed, which then enters the engine and burns there.

The principle of the carburetor of the chainsaw

The principle of the carburetor of the chainsaw

Carburetor of the chainsaw Husqvarna 137

The principle of operation of the fuel system using the example of a gasopyle carburetor with a two.stroke engine

Stihl Chainsaw Carburetor Adjustment

The principle of operation of the fuel system using the example of a gasopyle carburetor with a two.stroke engine

The components of any carburetor are:

  • aluminum corps (whole, cast);
  • nozzles or valves that regulate the amount of fuel entering the carburetor;
  • float chamber;
  • diffuser;
  • spray.

Figure 1 can be found with the location of the key nodes of the carburetor, and in Figure 2, see the appearance of the carburetor of the chainsaw. For proper adjustment of the carburetor, the owner of the chainsaw should be known by what principle this detail works:

  • When the engine starts, the air damper opens;
  • Due to the course of the piston inside the float chamber and in the air channel, sparse air forms;
  • Further, the mass of air is absorbed through the diffuser, where it is mixed with fuel, which also passes through the fitting into a float chamber, so there is a fuel-air mixture entering the inlet channels;
  • The last step is to get the mixture into the engine combustion chamber.

By adjusting the position of the damper, the owner of the chainsaw can either add air to the fuel, or impoverish it. this means that the fuel mixture will enter the combustion chamber faster or slower. Carburetor adjusting screws are used to set up engine speeds. Air filter is installed above the carburetor, which cleanses the air before entering the air channel.

Table of proportions of fuel oil mixture for Husqvarna chainsaws

The carburetor hub of expensive and medium.sized gas station is almost the same. Cheap Chinese chainsaws are often different from expensive original models of chainsaws in that they do not have a number of details in the carburetor node. The features of adjusting the carburetor of Chinese chainsaws can be read further in the article. sequence of process adjustment process

Before starting adjustment, remember:

  • The adjustment is carried out only “on hot”, that is, the engine needs to be started and warmed up for 10 minutes;
  • Then the adjusting screw is turned counterclockwise and stop the chain of the chainsaw;
  • Before adjusting, the chainsaw must be put on a flat surface, and the saw part should be directed away from the owner;
  • For adjustment, use three screws with literal designations, H. sets up the upper speeds, controls the main nozzle, L. regulates the operation of the idle jacket, sets low speeds, t. tunes in idle.

Carburetor adjustment step by step:

  • Scroll the screw l from left to right, or from right to left, find the maximum number of engine speeds, then return 1/4 of the turn back;
  • Do the same actions with a screw N;
  • The chainsaw should work for a few seconds, using the tachometer determine the maximum engine speed. their indicator should not exceed the maximum indicated in the instructions to the chainsaw;
  • If the circuit moves in the idle mode, turn the screw T in the direction of the circuit until the circuit is completely stopped (the idle passage is always regulated only by the tj, which is rotated from right to left. counterclockwise. until the chain stops completely).
  • Weakened threaded fasteners, air penetrates through the formed gap;
  • The nozzles are clogged with tarry deposits, flushing in acetone is required;
  • The ignition is not adjusted.
adjustment, carburetor, stihl, repair

The setting of the saw carburetor and its minor repair can be done without experience, but in order to perform it correctly, you need to follow the algorithm prescribed in the attached documentation. However, you should not overestimate your strength, because sometimes it is cheaper to pay a specialist for quality maintenance than to eliminate the consequences of your unprofessional repair.

A chainsaw is a tool that will come in handy in any summer house even to lovers, not to mention professional workers. But, like any other device, the chainsaw needs constant care and prevention. One of the most common procedures is the adjustment of the gasopyle carburetor due to incorrect configuration in the past.

The first signs of a carburetor malfunction

Due to the untimely or unprofessional periodic service of the chainsaw, as well as due to strong load, difficulties in its work may occur from time to time. For professional workers, such breakdowns can reduce the effectiveness of their work and spoil the mood for the whole day.

Carburetor malfunctions, in turn, have specific signs. On them you can immediately determine the cause of the breakdown.

The incorrect tuning of the carburetor is evidenced by the following signs:

  • The tool starts problematic, after which it immediately stalls.
  • Basil stalls when you press the gas.
  • Gasoline is consumed in large quantities, and it still remains in the cylinders and does not burn out to the end, and the exhausts are excessively thick.
  • Carburetor settings installed at the manufacturer’s factory are knocked down due to improper use or independent adjustment.
  • Garbage got into the air fence. Because of this, she failed.
  • The pistons of the engine are spent. Carburetor configuration in this case will only temporarily solve the problem.

In the case when dirt got into the carburetor, one tuning is not possible. Here you just need to clean it. When the pistons are spent, then the engine repair is required.

But after that, of course, it is necessary to configure the horburator jacks, as well as their purge and cleaning.

Summing up

If you think about it, then adjusting the carburetor is an extremely simple lesson. The main thing is to observe certain rules. But if it is not done on time, serious problems may occur, up to overheating of the engine, which will lead to its jamming. The result is predictable. going to the store and unforeseen financial expenses. Especially, this applies to more expensive models. On the other hand, do not run with a chainsaw to the service center with the first suspicion that it is time to set up. So, adjusting the carburetor of the chainsaw with your own hands is the best option in a similar situation.

We really hope that the information outlined above will help one of the readers to maintain the performance of the usual tool for many years. It is possible that after reading you have any questions left or something was not stated too intelligibly. In this case, write about this in the discussions below. Homius will be happy to explain all incomprehensible moments. There you can leave your commentary on the article, express your opinion about it or share your personal experience of adjusting the chainsaw carburetor, if any. And also, please, do not forget to evaluate what you read. it is very important for us.

Finally, according to a long.established tradition, we bring to your attention a short video that will help to more fully reveal today’s topic by telling about the carburetors of Chinese chainsaws.

Carburetor chainsaw device

Almost all models of chainsaws use the same carburetor design. As an exception, you can name the carburetor of a very cheap Chinese chainsaw. There may not be parts, and most components are made of very cheap materials.

The main components of the carburetor are:

  • Body. It is made of aluminum to facilitate construction, has a solid form. The case has a diffuser, an intake pipe, a pulse channel, the main screw and a idle screw, a damper that regulates air supply, and other elements.
  • Diffuser. Located at the input of the carburetor.
  • Currents. Special valves that regulate the amount of fuel.
  • Spray.
  • Float chamber.

The final stage

Before you configure the carburetor on the Husqvarna chainsaw, you need to find the third screw, which is indicated by the letter “t”. Then the engine warms up for 10 minutes at average speeds. The third screw must be turned counterclockwise, having to ensure that the motor starts to work steadily. The chain should be motionless.

If the motor stalls at idle, then the screw should be turned clockwise. When the target moves, the screw is twisted back. If you have a question about how to configure the carburetor on the chainsaw, at the next stage you must check how correctly the engine works at maximum speeds when accelerating. It should be assumed that the engine operates correctly when accelerated if, when pressed on the accelerator, the revolutions increase to a maximum value between 2800 to 15000. The screw with the designation “l” must be unscrewed to the left to the eighth of the turnover.

Whether disassembly is needed

You can regulate the gasopyle carburetor without any disassembly at all, in rare exceptions you will only have to remove the air filter lid. There is a considerable share of contradiction: on the one hand, the chainsaws are designed for unhindered access to the adjustment mechanism, on the other hand, it is recommended to contact it as rarely as possible.

True, experienced rollers and sawmills always have a flat screwdriver with a long sting and periodically adjust the carburetor. This is explained simply: in the manufacture of a chainsaw, its carburetor passes a rough adjustment designed for a certain composition of air and fuel. It is clear that the conditions at the place of work are different from the stand.

When changing the brand of gasoline or, for example, an increase in air humidity, an experienced chainsaw user always corrects the quality of the mixture for greater performance and less wear of the piston part. But this, we repeat, requires considerable experience with a specific chainsaw and knowledge of the features of her behavior. In addition, the adjustment occurs incredibly thin. the screws are twisted by only 1/10. 1/20 turnover.

Another reason for adjustment. repair or replacement of the carburetor. In any case, the quality of the mixture should be set up only if the carburetor serviceability is significantly known (there is no garbage, the gaskets are not poisoned), the air filter is clean, the candle, clutch and the ignition system are in full. Otherwise, it is likely that the malfunction at one moment will be eliminated and the adjustment will sharply become incorrect, and the engine will begin to work for wear.

The main adjusting screws

There are only three organs for adjusting the carburetor, these are screws shunting with springs under a flat screwdriver. A pair of screws are located below, on the left l, right. h. The screw t (or s) is a little higher. So, that’s why they are intended:

  • Screw l. this is the very valve that regulates the cross section of the fuel channel when working at low speeds.
  • Screw h, by analogy with the previous one. this is a channel channel regulator for high speeds.
  • Screw t is a throttle regulator. He determines its position with a completely released accelerator lever.

The device of the first two adjusting screws is extremely simple: at their end there are needles inserted into the spools of alternating section (cones). Everyone’s thread is right, so twisting the screw clockwise, you drive the needle deeper and reduce the duct. When rotating counterclockwise, the exact opposite occurs.

Thus, the quality of the mixture in different operating modes is regulated. If the fuel increases, gasoline does not have time to burn completely and the engine develops the speed worse. When the mixture is lunch, the revolutions, on the contrary, are growing, and at the same time the engine temperature increases. It is worth noting that even when tightening the screws, the duct of both channels does not completely block completely, except if there is a blockage.

Features and technical characteristics of the MS 362 model

This equipment option is a professional class chainsaw with a security system and a high.power economical engine. Sawing performance here is exceptional. The device has an easy launch system and an electronic system that provides launch without shocks.

Fuel and oil tanks have opened lids without tools, which simplifies refueling. To turn on and off the tool you can use a combined lever. Tire length in this case is 40 cm. The power of the device is 3.5 kW or 4.8 liters. With. Chain step. 3/8 inches. The noise level during the operation of the chainsaw is 106 decibels. The idle speed is 2800 minutes. Weighs the device 5.8 kg.

0.6 liters in the fuel tank. Among the additional features should be highlighted:

  • increased efficiency;
  • easy launch;
  • the possibility of single.sided management;
  • the presence of a compensator;
  • anti.vibration system;
  • reduced oil consumption;
  • impatient nuts;
  • safe work;
  • fast refueling;
  • High power.

As for the increased useful action coefficient, technology is responsible for this feature. The working mixture is swirling in bypass channels, which helps to reduce the fuel consumed, at the same time the engine efficiency increases. It is also impossible not to mention the system that automatically measures the amount of fuel, recognizes hot and cold start, and also facilitates the launch of the motor.

It usually comes from a chainsaw plant with a adjusted carburetor, but over time you can carry out these manipulations yourself. First you need to start the engine, the saw should warm up within a few minutes. Then you should start rotating the screws in which the engine will develop maximum speed.

Then the screw returns back. At the next stage, you need to engage in power adjustment at maximum speed. To do this, use a tachometer. After the adjustment is completed, you should make sure that the chainsaws are easily gaining and dropping speeds, and works at high and low speeds stably.