We can say that the Ural 2 electron chainsaw is a kind of relative of the well-known and popular Druzhba chainsaw, which had the right to exist in the period from 1955 to 2008. Its production is carried out by a plant located in the city of Perm and was named in honor of F. E. Dzerzhinsky. To date, this manufacturer has produced more than 14,000,000 models of Ural chainsaws ; it is this feature that today makes it possible to produce significant industrial volumes in most of the logging industry of our country. And this is not surprising, since the Ural 2 electron chainsaw is not only a powerful, but also a practical assistant. In the article we will talk about adjusting the carburetor of the Ural chainsaw.
Chainsaw Ural repair and operation
In the process of using the Ural.2T Electron chainsaw, operational problems arise for various reasons that need to be eliminated. Problems almost always arise due to incorrect operation and can be corrected with your own hands. The article Chainsaw Ural, repair and operation is devoted to such typical problems that you can fix yourself, on your own.
Let's look at some of them below, the most serious at first glance (which I had to encounter during almost 15 years of using this tool), but easily removable on our own.
Such as, for example, repairing a starter or adjusting the ignition of a chainsaw, adjusting and installing a carburetor. Replacing the repair kit.
I purchased this tool in 1999, and it still works fine for me. And so, the first characteristic reason why the engine does not work as it should is the use of low-quality fuel.
The second reason is when too much oil is mixed with the fuel to operate the chainsaw. As a result, the engine does not produce the required power because:
1. The piston rings are burnt in the piston grooves, or the piston ring has broken.
2. The piston with piston rings and the cylinder are heavily contaminated with carbon deposits.
To fix this problem, you need to disassemble the chainsaw.
Photo-1. Remove the cylinder from the chainsaw body.
To do this, unscrew the nuts securing the cylinder to the body. Carefully remove the cylinder from the piston rings and carefully inspect the piston, rings and cylinder.
Photo-2. Carbon deposits on the piston and piston grooves.
Traces of heavy carbon deposits are visible on the piston and piston grooves, which should be removed. Carbon deposits are also present in such cases on the inside of the cylinder.
To remove carbon deposits from the piston grooves, it is necessary to remove the piston rings from the piston. The rings and piston are usually kept in kerosene or gasoline until the carbon deposits soften. Broken or heavily worn rings should be replaced with new ones.
To remove carbon deposits from the piston, you can use a wooden stick or rag, but not metal objects.
Photo-5. Removing carbon deposits from piston grooves.
To remove carbon deposits from the piston grooves, you should also use non-metallic objects. After removing carbon deposits or replacing the piston rings, reassemble the chainsaw in the reverse order.
Chainsaw gearbox Ural
If, while sawing a chainsaw, the gearbox makes a grinding noise or other extraneous sound, then it is necessary to disassemble and inspect it. It is quite possible that one of the two bevel gears of the gearbox has failed. The gearbox should be disassembled from the side of the saw chain drive sprocket.
Photo-10. Removing the drive sprocket. For more detailed information about the operating rules and methods of disassembling a chainsaw, download the instructions. DOWNLOAD
In order to remove the driving sprocket of the saw chain, you need to unscrew the fastening nut and pull the sprocket towards you. The sprocket should be carefully inspected, and if severe wear is detected, replace it with a new one.
Photo-11. Dismantling the driven bevel gear.
To dismantle the driven bevel gear of the gearbox, it is necessary to unscrew the fastening nuts and pull the gear housing towards you.
Photo-12. Replacing the driven bevel gear.
The driven bevel gear of the gearbox is inserted into an aluminum housing with a bearing. If necessary, the entire structure should be disassembled and worn parts replaced or the entire structure replaced.
If increased noise occurs when the chainsaw is operating, this may mean that the muffler has been damaged. In such cases, the muffler should be replaced.
To replace the chainsaw muffler, you need to unscrew the two M6 fastening nuts using a wrench, then unscrew the two M5 screws.
Photo-14. Unscrewing the M5 screw of the muffler.
To unscrew two M6 screws, use a screwdriver.
Operating instructions
According to the operating instructions for the chainsaw, the device must be unpreserved and assembled before carrying out work.
The gasoline-powered saw is assembled in the following sequence:
- Unscrew the screw and disconnect the elements of the frame structure clamp.
- The engine is installed in a vertical position on the side of the crankcase cover, the gearbox is mounted on it with a connecting flange, and the mechanisms are secured with a clamp.
- The screws are installed in the grooves until they are fixed.
- The handle is connected to the carburetor throttle control cable so that the gap between the elements is 15-16 mm.
- Adjust the tightening of external fasteners.
How to break in a chainsaw
The chainsaw is run in first at idle, then during operation.
The operation is carried out at idle speed until 4 fills of the gas tank are fully used.
The fuel mixture is prepared in the following ratio: 1 liter of universal motor oil to 15 liters of gasoline.
Used oil is not used, otherwise the connecting rod needle bearings will fail. You should also not use leaded gasoline or fuel contaminated with mechanical impurities or water. Subsequently, the liquids are mixed according to a 20:1 ratio.
Run-in during operation is carried out during the first 25 hours, the engine is not overloaded.
Chain for chainsaw Ural-2T
For the Ural-2 Electron gasoline-powered saw, a MI-10.26 U-16 Strong chain is used.
During operation, it stretches, so the tension must be periodically adjusted using the tensioner screw. The saw chain can be easily removed and switched on and off automatically using a centrifugal friction clutch.
Sharpening is carried out with a round cylindrical file with a diameter of 5-6 mm, followed by immersion in oil for 5-10 minutes.
Replacing the ratchet on a Ural chainsaw
Another reason for a chainsaw malfunction may be severe wear of the ratchet, which is installed on the flywheel bushing of the chainsaw's crankshaft. As a result of such a problem, it is not possible to start the chainsaw engine, since the starter ratchet does not engage the chainsaw ratchet. To do this, disassemble the deflector, remove the crankcase cover, then unscrew the ratchet and replace it with a new one.
To remove the deflector, you need to unscrew all its fastening nuts. But first you need to remove the frame with the gas tank, disconnect the gearbox from the engine, and also disconnect the gas line from the carburetor.
In order to remove the crankcase cover, you need to unscrew the fastening bolts, then carefully pull the cover towards you. Photo-8. Unscrewing the ratchet.
To remove the ratchet, it is necessary to block the rotation of the engine crankshaft. This can be achieved by blocking the friction clutch on the crankshaft on the reverse side (gearbox side).
The ratchet can be unscrewed easily; a wrench is used for this. All parts (deflector, crankcase cover) are assembled in the reverse order. That is, first the crankcase cover is installed and secured, then the deflector is installed and secured.
READ How to adjust the carburetor on a Chinese saw
Ural chainsaw engine
During the operation of the tool, it is very likely that the following problem may occur:
The engine starts with difficulty or normally, but runs unstably and intermittently. There are several probable reasons for such situations; we list the most basic ones below:
1. Poor quality fuel or water has entered the fuel.
2. Due to poor quality fuel the carburetor , from frequent attempts to start the engine, the spark plug became wet with fuel and a lot of fuel accumulated in the crankcase cavity.
3. Leaks in the connections between the cylinder and the crankcase, and depressurization may also occur between the carburetor and the cylinder.
4. Rarely, but still happens, depressurization of the chainsaw crankcase.
Methods for eliminating such causes are as follows:
If the reason is low-quality fuel, then you should drain all remaining low-quality fuel from the gas tank. Clean the gas line, disassemble the carburetor, clean the carburetor strainer from debris and reassemble it, reinstall it. Adjust the carburetor as follows:
1.Turn the carburetor full throttle screw all the way and then turn it back 1/2 turn.
2.Tighten the idle screw until it stops, then turn it out one turn.
Leaks in the connection of the cylinder to the crankcase or the carburetor to the chainsaw body are eliminated by tightening the fastening nuts. The spark plug should be unscrewed, dried and cleaned. Gasoline from the crankcase cavity must be purged as follows:
Close the fuel valve, then unscrew the spark plug, install the starter and pull out the starter cable, then release it back. This operation is repeated many times until all the fuel accumulated in the crankcase is purged (the fuel flies out through the spark plug installation hole on the cylinder).
To restore the tightness of the chainsaw crankcase, you need to disassemble it. To do this, first of all you need to disassemble the drive clutch.
In order to remove the bearing cover, it is necessary to unscrew the fastening nuts without damaging the gasket. Then remove the adjusting ring that is installed between the bearing and the cover.
We continue dismantling, you need to unscrew the five nuts from the studs and separate the left side of the crankcase from the right side.
In this case, as a rule, the gasket always fails, since it is paper. Next, you should draw another gasket on drawing paper, then lubricate it with oil and install it back on the studs.
Photo-19. Installing a new gasket on the studs.
We install a new gasket made of drawing paper on the crankcase mounting studs, then remove it back and lubricate it with oil.
Photo-20. Connection of the left side of the crankcase to the right.
After this, we install it back on the studs, then install the second part of the crankcase and secure it with fastening nuts. Disassembling the engine crankcase is carried out not only when it is necessary to replace the gasket, but also when replacing worn bearings, as well as the connecting rod and piston group. Read more article Ural chainsaw
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Adjusting the carburetor of Ural chainsaws
Before leaving the factory, all chainsaws receive factory settings, which are retained for a certain time. After purchasing new equipment, the question of how to adjust the carburetor on a Ural chainsaw becomes central. Do not rush to reconfigure the carburetor after purchase: let the saw run for several hours at low speeds. Gradually adjusting the jet clockwise, switch to high speeds, during which the saw should not buzz or smoke much. If this happens, tighten the screw: the fuel mixture will become leaner. By following this adjustment principle, the saw can always be adapted to any load.
Price and reviews
A new gas-powered saw Ural-2 can be bought for 14-14.5 thousand rubles.
The secondary market offers the tool for 5-7 thousand rubles, depending on the working condition.
Maxim, 33 years old, St. Petersburg
Powerful, unpretentious, easy-to-maintain workhorse. Sags and cuts perfectly, fuel consumption is low. The chain has strong teeth, does not break or bend.
Peter, 41 years old, Omsk
I bought a chainsaw a long time ago, back in 1990, new, straight from the factory. Over the entire period of operation, there are no complaints on my part. Starts easily and quickly, even in cold weather. After each use, I blow out and lubricate all parts. I can it for the winter and store it in a dry garage. The only drawback is the heavy weight. After using it for a long time, my hands hurt.
How to start a Ural chainsaw?
A serviceable and refilled tool can be started. To do this you need:
- move the switch to the working position;
- pump the fuel mixture into the carburetor;
- pull the starter;
- warm up the engine and start working.
If the device is completely new or returned from repair, it definitely needs to be broken in, which we’ll talk about next.
Setting the maximum power
Power adjustment on the Ural 2 Electron chainsaw is carried out only after the break-in period has expired (it is 25 hours of operation) and after adjusting the idle speed.
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The essence of the setting comes down to depleting or enriching the fuel mixture.
Not fully tightening the propeller means introducing more air and less fuel. When the screw is unscrewed, the opposite happens, that is, the combustible mixture becomes richer. The most preferred position of the screws can only be determined experimentally.
When setting up the Ural , you must remember the following principles for the correct operation of the chainsaw:
- The engine should always have good cutting performance and smoke should be moderate.
- The engine should always have excellent throttle response. At the same time, during the process of cutting wood, the chain should not stop, the saw should not overheat, and the engine should not slow down on its own.
If a complete misadjustment of the carburetor occurs and the engine stops starting, it is recommended to perform the following actions:
- The screw is turned completely until it stops, and then turned out one turn, no more.
- The screw is tightened to the limit, and then turned out half a turn.
This will allow you to return the adjusting screws to their original position, and then carry out proper adjustment of the carburetor of the Ural chainsaw according to the standards described above.
Features of using a chainsaw
Rules for the use and maintenance of the Electron Ural 2t chainsaw:
- for optimal functionality of the tool, use a fuel mixture in a ratio of 1:50, this is the optimal ratio for high-quality operation of a two-stroke engine;
- after a break in work, use only fresh fuel mixture;
- regularly check the condition of the chain and bar, make sure that the chain receives lubricant;
- use high-quality fuel, high-viscosity oil and pure gasoline;
- store the saw in a dry place, under a waterproof cover;
- upon completion of work, clean the chainsaw body from dirt;
- work only with hearing protection and cover your face with a special plastic mask;
- replace fuel and air filters and spark plugs according to the instructions;
- Adjust the chainsaw carburetor annually.
How to adjust the carburetor on a Ural chainsaw?
The carburetor is adjusted in idle mode using the adjusting screw. If the carburetor is adjusted correctly with the screw, the engine will increase speed on its own without moving the chain along the tire.
Video about adjusting the carburetor of a Ural chainsaw:
How to adjust the ignition on a Ural chainsaw?
The ignition adjustment of the Ural chainsaw is done as follows: turn on the saw and allow the engine to warm up, then the owner of the saw determines when the tire set produces the most stable speed, and then switches the tool to low speed and sharply pulls out the starter cord. As a result of this action, the engine speed will increase, this will mean that the ignition is set correctly.
Ignition circuit for the Ural 2 Electron chainsaw:
Malfunctions of the Ural 2-T Electron chainsaw
Owners of the Ural 2T Electron chainsaw may encounter the following most common tool malfunctions:
Lack of high-quality sawing, the tire moves “heavily” on wood and produces small chips.
Reason: the chain is dull and needs sharpening or replacement.
There is a strong noise, knocking, rattling when the chainsaw is operating.
Reason: the carburetor needs to be adjusted, the carburetor needs to be adjusted in the service.
The saw began to stall right during operation, or completely refused to start.
Reason: poor quality fuel, ignition problems, the spark plug may need to be replaced or cleaned of carbon deposits.
What kind of carburetor is used in the Ural chainsaw
Ural 2 Electron chainsaws are equipped with a KMP-100U carburetor, famous for its reliability and ease of adjustment. The body is completely metal, the jets are calibrated, and the membrane is made of a material resistant to a mixture of gasoline and oil.
To quickly start the chainsaw at subzero temperatures, the carburetor is equipped with a cold engine start lever. As for adjusting the quality and quantity of the fuel mixture, screws are responsible for this, which you can independently set to the desired position.
How does a carburetor work on a Ural chainsaw?
The design of the carburetor cannot be called complex, which is definitely an advantage of the Ural 2 Electron chainsaws. The main components responsible for the performance of the carburetor include:
- A float chamber made in the form of a reservoir. This element is used to maintain the fuel level at an optimal level before mixing with air occurs.
- Channels through which the fuel mixture enters. From the float chamber, the fuel is initially transported to the nozzle, and then enters the atomizer.
- A diffuser, which is a narrowed tube. With the help of this element, the rate of entry of air masses is increased to obtain a high-quality fuel mixture.
- A special tube resembling an aerodynamic design. This is the main element of the carburetor through which air masses pass. This tube is equipped with a special damper that regulates the amount of air supplied.
Setting idle speed
Before proceeding with the adjustment, you should make sure that:
- The engine runs smoothly and the chain does not move.
- There is no strong smoke.
The adjustment algorithm looks like this:
- The Ural saw engine starts and warms up a little. The screw sets the minimum speed so that the chain remains in place. If the mixture is too rich (strong smoke coming from the exhaust pipe), then the screw should be tightened a little. This will reduce smoke and increase speed.
- Then you need to return all settings to the level of minimum and stable speed. This is done by partially unscrewing the screw
- The next step is to test the engine for throttle response. If, after pressing the throttle lever firmly, the revolutions quickly go up, then everything is done correctly, and the screw must be securely fixed in this position.
If the engine stops working or the speed increases slowly, the screw should be turned out a little. In order to increase the speed, the screw is turned a little. Afterwards, the Ural saw engine is re-checked for throttle response.
When the carburetor needs adjustment
All new Ural 2 Electron chainsaws supplied by the manufacturer have already undergone standard carburetor adjustment at the factory. However, for proper running-in of the tool, it would be useful to purposefully lower the engine speed, and then make fine adjustments. This process allows the engine to operate as efficiently as possible.
In addition, after a certain period, the carburetor settings of the Ural chainsaw are lost. But this is natural, since various difficulties may arise during operation. Symptoms indicating the need to adjust the fuel mixture supply and preparation system include:
- Increased gasoline consumption. This is caused by oversaturation of the fuel mixture with gasoline.
- Engine stalling or not starting at all. In this case, the cause is excess air and shortage of gasoline.
If everything is in order with the fuel mixture, it means that the Ural chainsaw carburetor adjustment failure is caused by mechanical reasons:
- Strong vibration. The protective cap becomes damaged over time, causing the adjusting screws to move randomly.
- Blockage. The use of low-quality fuel, damage to the filter element, the appearance of scale - all this contributes to the appearance of blockages. There is no way to do this without completely disassembling, cleaning the entire system and reconfiguring it.
- Worn piston and cylinder. If the problem is that the piston part of the engine has become unusable, then adjusting the carburetor will only help temporarily.
Technical data
Peculiarities:
- Powerful 4.2 kW two-stroke engine
- Reinforced piston group
- Anti-vibration system
- Metal body
- Improved starting due to primer
- Simplified filter access
- Automatic chain lubrication
- Mechanical brake
- Kickback protection
- Improved ignition system
- Cylinder and piston chrome plated
Characteristics:
- Engine: two-stroke single cylinder
- Power: 4.2 kW / 5.0 hp
- Engine capacity: 45 cm3
- Fuel tank capacity: 0.55 l
- Oil tank volume: 0.26 l
- Cooling: air
- Chain speed 8800 rpm
- Tire length: 45 cm
- Chain pitch: 0.325″
- Fuel mixture: A-92 gasoline + oil for 2-stroke engines
- Weight: 5.8 kg (without equipment)
Equipment:
- tire - 2 pcs.,
- chain - 2 pcs.,
- user guide
- a set of keys
- container for mixing fuel and oil
12 month warranty. Warranty repairs for this product are free of charge.
The Belarus BP-4200M chainsaw is made of a high-quality metal magnesium body. The designers used in the model a high-speed two-stroke single-cylinder gasoline engine with a displacement of 45 cm3 and air cooling, which will allow it to operate for a long time without overheating. The engine is equipped with an efficient dual exhaust, which reduces operating noise to the limit. The Japanese-made Walbro carburetor allows you to work in any position of the saw. Preventing chain link clogging is the responsibility of the cutting edge lubrication system, which also supplies oil to the friction units of the sprocket mechanisms.
High wear resistance is ensured by both the engine design (chrome-plated cylinder, two bearings, forged steel connecting rod) and the new nylon air filter, which allows long-term operation in highly dusty conditions. An effective anti-vibration system includes isolating the ergonomic handle and fuel tank from the engine with three spring and rubber shock absorbers. This reduces fatigue during long periods of work and promotes greater controllability, while operator protection is provided by a safety handle, overrun brake and chain catcher.
The Belarus BP-4200M chainsaw will become an important assistant on your farmland. Since it is already a semi-professional device, the range of its application expands significantly. Now you can do more than just care for trees or collect firewood. Thanks to the powerful 4.2 kW two-stroke engine, logging work will progress much faster.
The popularity of this chainsaw continues to rise, since its use does not require high physical costs or special technical knowledge.
The high quality magnesium metal body used in this model ensures a low weight of 5.8 kg, but at the same time increases its impact resistance compared to plastic. The high-speed, two-stroke, single-cylinder gasoline engine with a displacement of 45 cm3 is air-cooled, which prevents overheating during long-term operation. The highly efficient dual exhaust allows noise insulation to be reduced to the maximum limits. The carburetor, made in Japan, allows for operation in different saw positions.
Automatic oil supply not only prevents clogging of chain links, but also lubricates the friction units of the floating sprocket mechanisms. A chrome-plated cylinder, two bearings, and a forged steel connecting rod ensure high wear resistance and engine life of up to 5 years.
The updated nylon air filter allows you to work in dusty conditions. The ergonomic handle, covered with very soft rubber, as well as the fuel tank are isolated from the engine by an anti-vibration system that includes three spring and rubber shock absorbers. This significantly reduces the load on the operator and gives greater controllability during long periods of work.
Safety is ensured by an inertia brake and a chain catcher.
Another big advantage of this model is the increased size of the fuel and oil tank, which allows you to extend the operating time without refueling.
Refinement of the Ural chainsaw carburetor: eliminating factory defects
Since the KMP-100 carburetor was the only one produced in the USSR, several million of them were produced. With such a massive and long-term production, the product could not be raw and unfinished. All the shortcomings were taken into account and improved at the beginning of production, and the KMP-100 and KMP-100U had no factory, design or technological shortcomings.
All their problems arise from improper operation (low-quality fuel) or simply from physical wear and tear over time.
carburetor requires modification when the engine from the Ural 2t Electron chainsaw is used for another purpose. For example, like a boat motor.
In this case, it is not the carburetor itself that needs to be altered, but the idle speed control system located on the gas handle.
Walbro carburetor for Ural chainsaw
carburetor from the Stihl MS 660 chainsaw, which is similar in power, has proven itself well. A perfect fit is achieved by adjusting the screws. Also, the mounting dimensions are almost identical (between the holes on the carburetor and the studs on the engine). A difference of 1 mm is eliminated by sharpening both holes with a file, each by 0.5 mm.
This is what a Walbro carburetor looks like, which is installed on a Ural chainsaw
What other carburetors were installed on the Ural 2t Electron chainsaw?
The Ural 2t Electron chainsaw was often equipped, and is installed today, with carburetors from other two-stroke engines with the following engine parameters:
- power 5.5 hp
- combustion chamber volume 90.4 cc,
- piston diameter 55 mm.
Sometimes carburetors from much more powerful engines were installed. For example, from motorcycles “Minsk”, “Voskhod”. True, there is a drawback: the supply of the fuel-air mixture increases significantly. It was reduced by adjusting the screws. The engine worked, but the excessive fuel consumption was significant.
With the appearance on sale, after 1991, of imported chainsaws and spare parts for them of similar power, carburetors from them began to be used.
Related Posts
Chainsaw Ural is in service as before
The Ural chainsaw was produced for the first time in 1935. In 2005, at the machine-building plant named after F.E. Dzerzhinsky in the town of Perm, the 14 millionth copy of the famous instrument was assembled. 80% of logging in the country is still carried out using a Ural motor saw. At the same time, a model for small work on farms is coming off the assembly line - the Druzhba saw, but it is a class lower than its older brother.
Characteristics of a Soviet-era motor saw
Initially, the Ural chainsaw was on the technical equipment of the army, and only in 1955 the plant switched to producing products for logging, giving the model the name Ural 2. The tool weighed 11.7 kg. At the same time, the engine power was 5.5 liters. With. Adjusting the carburetor of a Ural chainsaw should be done by hand. The saw blade rotated at a right angle during operation, which facilitates the work of the fellers. The chain had forced lubrication, and the unit was equipped with a hydraulic wedge.
Repair: main faults and their elimination
Most often, problems with fuel supply arise when the tiny holes of the jets become clogged and when the membrane-rocker arm pair fails. The brass cross of the rocker arm can bend or jump out of its seat and shut off the fuel supply at the wrong time. The soft membrane can dry out over time, lose elasticity, warp and also incorrectly shut off the fuel supply.
This is what the new membrane looks like (right)
There are two ways to clean the nozzle hole:
- The carburetor is purged with compressed air from a compressor or pump. Remove the gasoline supply hose from the tank, put an air hose on the fitting and bleed the carburetor.
- If the problem is not solved, remove it, disassemble it, gain access to the jets, clean and rinse the entire chainsaw carburetor. The jet is cleaned in place or unscrewed (it is threaded).
The soft membrane on old carburetors most often fails after long breaks in operation. It just dries out without gasoline. Therefore, before starting after a long period of inactivity (a year or six months in the summer in the heat), you need to open the gas tank tap, fill the carburetor of the Ural chainsaw with gasoline, and do a test run after half an hour.
If the carburetor is several decades old, the membrane material can change its properties simply over time.
A defective membrane cannot be repaired; it is simply replaced.
Lack of tightness
Other problems with the KMP-100U carburetor are loss of tightness. Gaskets between the carburetor and the engine body, and between parts of the carburetor should not suck in air during operation and cause fuel leaks when the engine is turned off.
Gaskets can deteriorate for the same reasons as the membrane, that is, they dry out and become brittle over time.
Repair kit for Ural chainsaw carburetor
Repair kits are still sold for KMP-100U carburetors - a set of gaskets, a membrane, in other configurations there may also be a rocker arm with a spring for it.
The spring that determines the position of the rocker arm must under no circumstances be stretched. The cross of the rocker arm must lie exactly, strictly parallel to the plane of the carburetor, otherwise the fuel supply will be incorrect.
During the Soviet era, when not only chainsaws were in short supply, but also spare parts for them, gaskets were made ourselves, from paronite sheets.
In the absence of paronitis, the gaskets were made of thick single-layer paper (not cardboard), coated with oil paint.
Sources:
https://sadovij-instrument.ru/benzopily/ural.html https://benzopilok.ru/remont/karbyurator/regulirovka-na-benzopile-ural.html https://vsekarby.ru/benzoinstrument/benzopily/karbyurator- ural.html
