Chainsaw Ural-2T Electron: review, characteristics, instructions

Flaws

But, like every working tool, the Ural Electron 2 model also has disadvantages:

heavy weight, when holding the saw with your hands, the latter quickly get tired during active work;
the model is no longer produced by the manufacturer;
overall massiveness of the device;
in remote areas of the country there may be difficulties with spare parts.

In the Urals, developers have provided a vibration damping system, but even with its use it was not possible to reduce their level to completely safe values and vibration during sawing is noticeably felt. Therefore, in connection with labor safety rules, the feller is recommended to use the chainsaw for no more than two hours a day; with longer use, the worker may develop occupational diseases.

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.

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.

Ignition circuit for the Ural 2 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.

How to adjust the carburetor

The Ural-2T-Electron chainsaw is equipped with a KMP-100U carburetor, which includes:

frame;
diffuser;
inlet, outlet and check valves;
fuel channel;
low and full throttle screws;
pump and regulator cavities;
button;
springs;
throttle and starting valves.

Before starting the chain saw, you need to keep it with a full tank of fuel for at least four hours so that the carburetor membrane acquires the required qualities.

When switching from the tool break-in mode to a normal fuel mixture, the carburetor must be adjusted by changing the position of the jets using three screws:

for adjusting high speeds;
for adjusting the low speed jet;
idle move.

Rotating these screws changes the speed of the chain rotation and also adjusts the throttle fuel/air ratio. If the mixture is rich, smoke comes out of the muffler; if the mixture is poor, the saw squeals.

Chainsaw "Ural"

A chainsaw is a hand-held tool equipped with an internal combustion engine. The handle helps you hold it in your hands, and the working part is the tire. The tool is quite mobile, so it is indispensable for private farming and logging.

Simple household saws have a somewhat simplified structure, which makes them easy to use by the average person without experience. But its operating conditions are milder - the operating time per month is no more than 20 hours. Professional units, for example, “Ural”, are wide-profile and the conditions in which they can be used are much more severe, including operating time.

Initially, the Ural chainsaw was designed as a highly specialized professional tool for forestry. Therefore, its sister chainsaw “Druzhba” is more familiar to the private user, while the “Ural” is used mainly by professional fellers. Its productivity provided 80% of domestic logging. The first Ural chainsaw saw the world in 1935, and in 2005 the plant named after F.I. Dzerzhinsky produced the 14 millionth unit of this equipment.

What is the difference between the Ural and Druzhba chainsaws?

Although both of these saws are similar in many ways, they have a number of differences:

“Ural” has a higher power rating - 5 horsepower, in comparison, “Druzhba” has only 4 hp;
The Ural's light weight of 11 kg (Druzhba's is 12.5) makes the tool more convenient to use;
“Ural” is equipped with a gearbox capable of turning the saw bar 90 degrees, which greatly facilitates felling of timber;
The upper handles of the “Ural” allow you to work even with a large thickness of the snow layer. In addition, the operator’s back practically does not tolerate overload;
The Ural chainsaw has been improved with a hydraulic wedge for felling trees in the required direction. A chain lubrication system has also been introduced, which was not present in the previous model.

Automatic chain lubrication allows you to work with very high productivity. It is interesting that lumberjacks thought of replacing the Ural sawing mechanism with a Stihl one, receiving increased productivity from such a modification.

Disadvantages of the Ural chainsaw

Of course, like any unit, with all its advantages, the Ural chainsaw also has its disadvantages:

Soot from the engine while operating the tool. Even taking into account the rather high position of the handles, the logger often has to breathe not the aromas of the forest, but the smoke;
Excessively large mesh from the air filter, unlike foreign brands. Thus, the domestic unit has a grid cell in tenths of a millimeter, and foreign ones in fractions of a micron. This fact significantly reduces the productivity of the tool;
Increased proportions of gasoline and oil 20:1 compared to imported models operating at 50:1;
Periodic problems with gearbox failure and engine jamming;
The saw does not have a chain brake.

But you can also find positive aspects among factors that at first glance seem to be negative. For example, the engine parts of the Ural chainsaw are not as meticulously fitted as those of a foreign unit. For this reason, the ingress of small debris does not cause much harm, burning inside.

Professional for home

The Ural chainsaw can also be successfully used as a home assistant. It will do an excellent job with routine pruning of trees, sawing firewood, as well as when working with any wood. It can make cuts both across the fibers and along them. Almost no weather conditions frighten this instrument, but within -40 and +40 degrees Celsius. There is nothing overly complicated in servicing a chainsaw - refueling with a mixture of gasoline and oil.

Comparison with Friendship

Ural and Druzhba are very similar and were produced at the same enterprise, but they still have differences:

The Ural is more powerful, 5.5 horses versus 4 for Druzhba;
The Friendship chainsaw is 1.2 kg heavier;
The Ural drive allows you to rotate the saw bar 90 degrees for easier work when felling trees;
The Ural handles are placed on top, this allows you to work for a long time in heavy snow and creates less stress on the feller’s back;
The Urals have a chain lubrication system when sawing, which significantly extends the service life of the saw;
The hydraulic wedge is included in the standard kit of the Ural Electron 2 saw; it allows you to fell trees in a given direction.

Conclusion

Modern chainsaws have a reliable supply of chain oil, if it fails there is no need to operate the chainsaw to avoid further damage. It is better to troubleshoot the lubrication system by contacting a service center or a specialist with repair experience; this guarantees the quality of the final result.

Source

Children's chainsaw plant Perm Ural, high-quality receiver from the legendary Druzhba. It has enjoyed continued success with consumers for decades. Let's consider its structure, advantages, disadvantages and technical characteristics.

READ Review of Chainsaw Chain Sharpening Machines

Bar and chain

The Ural Electron 2 chainsaw has a guide bar of 460 millimeters. It comes with a chain as standard. It is removable and is removed during long-term storage or preservation of equipment.

Since chain links stretch during operation, this is a natural process, it is necessary to periodically monitor its tension, in other words, adjust it. The new chain stretches more strongly.

An excellent choice for this chainsaw would be the MI-10.26.16 Strong chain. After long-term use, the chain requires sharpening. For manual sharpening, a round file in the shape of a cylinder with a diameter of 5-7 mm is suitable. When sharpening, there is no need to remove the chain from the device; it is enough to simply increase the tension and sharpen “in place.”

Setting algorithm

Calibrating the carburetor of the Ural 2 Electron saw involves changing the amount of the fuel mixture and its quality characteristics. There are two types of adjustment.

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. Screw No. 3 sets the minimum speed so that the chain remains in place. If the mixture is too rich (strong smoke comes from the exhaust pipe), then screw No. 1 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 screw No. 3.
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 screw No. 3 must be securely fixed in this position.

If the engine stops working or the speed increases slowly, screw No. 1 should be turned out a little. In order to increase the speed, screw No. 3 is tightened slightly. Afterwards, the Ural saw engine is re-checked for throttle response.

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.

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 carburetor, you must remember the following principles for the proper 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:

Screw No. 1 is screwed in completely until it stops, and then turned out one turn, no more.
Screw No. 2 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.

Ignition adjustment: video

The process of checking the correctly set ignition on Ural chainsaws is quite simple. Especially if you strictly follow this algorithm:

The Ural saw engine starts and warms up for some time.
The owner of the tool determines the most persistent turns of the tire, and then reduces the engine speed.
The next step is to pull the starter. Moreover, this must be done as sharply as possible.

If the engine accelerates sharply, it means that the ignition system is set correctly. If this does not happen, in this video you can see the entire setup process.

The carburetor is an important element of any chainsaw, including the Ural 2 Electron. In many respects, due to correct settings, the life of the engine and the efficiency of the chain saw as a whole depend.

Chainsaw Ural BP 3800 – parameters of the popular model

This Ural brand gas powered tool is equipped with all the necessary options to ensure stable operation of the model under high loads. The factory equipment of the popular branded saw includes a reliable gas engine, a high-precision lubrication system for cutting parts, an effective modified anti-vibration damping system for continuous vibration damping and a pre-reinforced mechanical inertial mechanized brake.

Options:

power – 5.16 l. With.;
branded tire length – 45 cm;
factory chain pitch – 0.325″;
weight including headset – 6.45 kg.

The saw is equipped with an intelligent forced fuel injection system, which ensures continuous fuel supply for stable operation of the tool in any operating conditions.

Purpose

In the USSR, 2 models of chainsaws were mass-produced - the Ural and Druzhba, and there was also the Parma electric saw. The Druzhba model was planned for small farms and was a “folk” product, and the Ural model was positioned as a professional-level tool intended for logging on an industrial scale.

Although in general these two saws are very similar, the Ural, as a more professional tool, has the ability to rotate the blade to a horizontal position in order to cut down a tree trunk while standing and not put so much strain on the operator’s back.

The use of the Urals in everyday life or at work greatly facilitates the already physically difficult work of loggers. This chainsaw can not only cut down trees, but also use it as an assistant in construction and household work, dismantling, bucking, and sawing firewood.

About the manufacturer

Many people know firsthand that in the USSR there were only two reliable and practical chainsaws - Ural and Druzhba. About Russian chainsaw manufacturers - here.

The Ural chainsaw was produced on the basis of the design developments of the world-famous domestic saw “Druzhba”. It became an even more powerful and improved model, which was equipped with:

Split type crankcase;
Cylinder (removable);
Starter (removable);
The saw part is of interchangeable type;
The fastening of the sawing apparatus itself and the handles remained exactly the same as in its predecessor “Druzhba”.

The Ural chainsaw manufacturer plant
produced Ural chainsaws from 1955 to 2008. Production took place at a well-known plant, always working to meet the needs of the country's defense industry. This plant named after F.E. Dzerzhinsky is located in Perm. They produced more than 14,000,000 Ural chainsaws, which, in turn, allowed the Soviet logging industry to reach a new level and significantly increase industrial volumes.

At the moment, the production of licensed Ural products continues in the city of Biysk.

Operating manual for the Ural 2T Electron chainsaw

The instruction is an invariable companion of the Ural chainsaw - this is the passport of the chain saw, which contains complete information about the tool:

Design and diagrams of the Ural chainsaw.
Tool assembly steps.
Equipment.
Safety requirements when sawing and during maintenance of a chainsaw.
Table with characteristics of the 2T Electron model.
Sequence of putting gas-powered tools into operation.
Instructions for starting a chain saw.
Chainsaw engine running-in period.
Sawing methods and techniques.
Carrying out maintenance of the Ural 2T Electron chainsaw.
List of possible malfunctions, causes of their occurrence and methods of elimination.

Chainsaw Ural 2T Electron, device, working diagrams

The photo shows how the legendary unit works, and we also see a list of its main components:

The device of the Ural 2T Electron chainsaw

Below is the ignition diagram:

Equipment for Ural 2T Electron

The standard delivery set consists of:

5.5 liter petrol engine. With.;
frame and handles;
starter rope;
fuel tank;
gas line;
clutch;
powertrain activation system;
ignition system;
start button;
spark plug;
muffler;
sawing unit;
box;
operational manual.

Safety precautions when working with a chain saw

Be sure to use personal protective equipment (gloves, goggles, earplugs/headphones, mask) and comfortable clothes and shoes.
Fill only with fresh fuel. Refueling should be done away from the work area.
Smoking near the Ural 2T Electron chainsaw is strictly prohibited.
Monitor the condition of the chain, do not cut with a dull chain.
Carry out maintenance of gas-powered tools with the engine turned off.
Remove bystanders from the area.
Learn ways and techniques of working with power tools.

Sequence of putting into operation the Ural 2T Electron chainsaw

The chainsaw is assembled into a single structure.
The cutting unit is mounted and the chain is tensioned.
The fuel mixture is being prepared.
The finished fuel is poured into the tank.
The chain saw crankcase is filled with regular 10B40 motor oil.
All fasteners are checked again.
The chainsaw is starting up.
Idle speed and lubrication supply are checked.
Running in the engine is mandatory.

How to prepare a fuel mixture for Ural 2T Electron

How much gasoline and oil is required to prepare a high-quality mixture for the Ural 2T Electron? Previously, the fuel mixture was prepared from AI-72 gasoline and motor oil for two-stroke engines. Today, 72-grade gasoline is replaced by 92-grade gasoline (72 has been discontinued), any oil for 2-stroke engines can be used. During the break-in period, the fuel mixture is prepared in the following ratio: 1/15. The carburetor is initially set for break-in, where more enriched fuel is used. After this is done, it is necessary to adjust the carburetor again, setting it to less enriched fuel with an oil to gasoline ratio of 20/1.

Break-in period

The testing of the Urals is carried out in 2 stages:

Four full tanks of rich fuel mixture burn out at idle.
The next day and for 25 hours, the chainsaw is run in with minimal loads.
At the end of the break-in period, the oil in the crankcase is changed, and the carburetor is adjusted to the new mode.

Chainsaw Ural 2T Electron, maintenance

Let's highlight the main points of service:

Regular cleaning work:
cutting unit;
asterisks;
carburetor;
spark plug;
filter.
Lubrication of components and mechanisms.
Sharpening the chain directly on the bar after each cut.
Adjustment (if necessary).

Download instruction manual

Causes and methods of troubleshooting the Ural 2T Electron chainsaw

The chainsaw does not want to start:
poor quality mixture;
the ignition is not set;
the carburetor is clogged or not adjusted;
filter cleaning required;
the candle doesn't work;
The high voltage cable is not connected.
Smoke is pouring out:
The chainsaw squeals loudly when working:
fuel is lean.
The saw stalls under loads:
the mixture needs to be replaced;
clean the filter, spark plug, carburetor.
Strong knocking, squealing, extraneous noise during operation:
Working with tension, small chips at the output:

Video review of adjusting the carburetor on a chainsaw:

Video

Video review of ignition adjustment on a chainsaw:

Video

Main features of the Ural chainsaw

The Ural chainsaw appeared in 1935. Since then, it has become widespread in the USSR, and after its collapse - in the CIS countries. Subsequently, the manufacturer made a number of improvements to the design of this tool. The new model, made of high-strength materials, is called the Ural-2T-Electron chainsaw. It is designed for use in harsh conditions in any season of the year at extremely low and high temperatures. Using a Ural chainsaw, large trees are felled and sawed. It consists of the following main nodes:

motor;
clutch;
saw unit;
frame with handles;
engine starting system.

The tool is mobile and standalone. Although it is equipped with a vibration damping system, the vibration during operation of the chain saw is still high. For this reason, forest fellers are instructed to use the Ural chainsaw no longer than one and a half hours a day. This measure helps prevent the development of occupational diseases caused by harmful working conditions.

In addition, this device is inferior to imported equipment in the following respects:

the Ural chainsaw engine operates with increased gas generation, so that the operator is forced to remain in a gas-filled environment for a long time;
servicing the device requires experience and skill;
there is no chain brake;
the device uses a mixture enriched with oil twice as strong as compared to foreign gas-powered tools;
increased fuel consumption.

At the same time, the Ural chainsaw has a number of advantages that allow it to compete with imported models:

reliability;
the ability to easily carry out both longitudinal and cross cuts;
high handles allowing you to work at full height without bending over;
low cost.

Tool Specifications

The Ural chainsaw, the technical characteristics of which should ensure uninterrupted operation of the tool, fully complies with accepted standards:

Single-cylinder two-stroke engine.
Power figures are 5.5 horsepower.
The capacity of the fuel tank is 0.24 liters.
The length of the tire is 46 centimeters.
The number of links on the chain is 64 pieces.
The width of the groove is 1.6 millimeters.

An important condition for reliable and long-term operation of the device is its correct and timely running-in. The first start of the engine must be done exclusively at idle speed using an enriched combustible mixture. It was necessary to burn at least 4 tanks. After 24 hours, it was planned to work in a more gentle mode with the same combustible mixture.

The company made a number of changes to the production process of gasoline saws, and the modernized model received a new name - Ural 2 T. The saw, as before, is actively used by forest workers and private owners.

The Ural 2 T Electron model was developed specifically for operation in any climate and under any conditions. The chainsaw is made of high strength materials. It is permissible to use the equipment at any temperature outside and even in a fairly aggressive environment. Therefore, experts have developed step-by-step repair instructions.

Despite the built-in vibration damping system, the design is quite rigid, and the vibration effect during use is very noticeable. In this regard, forest fellers are instructed to operate a chainsaw for no more than one and a half hours every day. Otherwise, the employee may develop an occupational disease related to hazardous working conditions.

Chainsaw "Ural"

What is the difference between the Ural and Druzhba chainsaws?

Although both of these saws are similar in many ways, they have a number of differences:

“Ural” has a higher power rating - 5 horsepower, in comparison, “Druzhba” has only 4 hp;
The Ural's light weight of 11 kg (Druzhba's is 12.5) makes the tool more convenient to use;
“Ural” is equipped with a gearbox capable of turning the saw bar 90 degrees, which greatly facilitates felling of timber;
The upper handles of the “Ural” allow you to work even with a large thickness of the snow layer. In addition, the operator’s back practically does not tolerate overload;
The Ural chainsaw has been improved with a hydraulic wedge for felling trees in the required direction. A chain lubrication system has also been introduced, which was not present in the previous model.

Disadvantages of the Ural chainsaw

Of course, like any unit, with all its advantages, the Ural chainsaw also has its disadvantages:

Soot from the engine while operating the tool. Even taking into account the rather high position of the handles, the logger often has to breathe not the aromas of the forest, but the smoke;
Excessively large mesh from the air filter, unlike foreign brands. Thus, the domestic unit has a grid cell in tenths of a millimeter, and foreign ones in fractions of a micron. This fact significantly reduces the productivity of the tool;
Increased proportions of gasoline and oil 20:1 compared to imported models operating at 50:1;
Periodic problems with gearbox failure and engine jamming;
The saw does not have a chain brake.

Detailed review

Each domestic manufacturer took care of creating equipment that best suited its class. The professional level is also confirmed by the presence of many functions and systems, including:

special frame capable of dampening vibrations;
low weight for long work in the forest;
special function - rotate the tire 90 degrees;
the Ural brand is represented by two models with a capacity of 3 and 5 horsepower;
the handles on the chainsaw are mounted at the top, which simplifies work in difficult weather conditions;
an excellent option is a hydrocline designed for felling trees in a certain direction;
Convenient chain lubrication system.

An excellent solution was the chain lubrication system, which was carried out automatically and provided the worker with excellent productivity. Recently, owners of Ural saws have been using a saw base from the Stihl brand, which has created better performance with the same motor characteristics.

Flaws

Unfortunately, any such device is not without its drawbacks, so Ural chainsaws have several comments:

diluting gasoline with oil is required in large proportions; instead of modern 50:1, Ural chainsaws required a ratio of 20:1;
not a single modification received a chain brake;
such a part as a gearbox tends to fail and even cause damage to the engine;
During operation, a lot of unpleasant smoke is generated.

Owners of the Ural 2 Electron model note an incorrect air filter, in which the mesh is located with large cells. Due to this disadvantage, the required ratio of gasoline to oil increases.

Modification Ural BP-45-3.0

In addition to the classic model with 5 hp. An interesting chainsaw, Ural BP-45-3.0, was produced, which was an excellent helper in the household. The weight of the device has been slightly reduced, and there is good equipment in the form of an additional ratchet and drive oil. Engine power was reduced to 3 hp. or 2.3 kW.

A 45-centimeter long tire is perfect for the model; fortunately, a large selection allows you to choose the right tire and chain. The tanks for liquids were also reduced - the fuel tank was 550 ml, the oil tank was 260 ml. By the way, the advantage of the Ural BP-45-3.0 is the presence of an automatic oil pump. As a result of all the changes, the final weight of the chainsaw decreased, which amounted to 7 kg.

Instructions for use and maintenance

A detailed assembly diagram and operating diagram of the chainsaw are described in the instructions. We provide only the basic rules for operating and maintaining the tool. Immediately after assembly, we recommend that you break in the chainsaw and let the tool operate for several hours in normal mode while maintaining the factory carburetor settings. Later, you can adjust the carburetor as needed by the owner.

Rules for safe operation of the Ural 2T Electron chainsaw

protect all parts of the body from damage when working with a chainsaw (it is recommended to use special protective shields for the right hand, as well as anti-vibration gloves, glasses or a plastic one-piece mask for the whole face, headphones to suppress noise);
do not smoke when operating a chainsaw, smoking may cause a fire;
Keep animals or children away from the area where the chainsaw is used;
always turn off the tool if visual contact with the surface being cut is not possible;
use the correct ratio for mixing oil and gasoline (for Ural chainsaws this ratio is 1:25);
Perform tool maintenance in a timely manner and ensure that there is oil available to lubricate the chain.

Chainsaw maintenance

regular maintenance - after completion of work and before starting sawing;
monitor the condition of the chain, the degree of lubrication of the chain and blade, the presence of burrs on the chain sprockets;
change the fuel mixture on time, use high-quality oil, good gasoline - this will extend the life of the chainsaw;
It is recommended to adjust the carburetor after running in the tool (after the first 5 hours of operation) and then perform it as necessary.

Main malfunctions of the model and their elimination

Let's look at the main reasons why a chainsaw refuses to work, as well as possible ways to eliminate such problems.

The Ural 2T Electron chainsaw does not want to start or starts stalling right during operation.

The reason for this malfunction may be the following: clogged filters, low-quality fuel, low oil, insufficient lubrication on the saw blade.

Solving the problem: cleaning the filters, monitoring the level of fuel and lubricants.

Sawing occurs with difficulty; as a result of the operation of the chainsaw, only small chips are formed.

Reason: Chain needs to be sharpened.

Sharpen with a special file or replace the chain.

Lubrication system malfunctions and ways to eliminate them

The main malfunctions of the oil supply system to a chainsaw can be divided into two main types: these are general malfunctions inherent in all chainsaws, and individual ones, which can vary depending on the type of pump and worm gearbox installed on a particular model. Let's start sorting out the faults in order.

READ How Much Oil to Put in a Chainsaw

Signs of a malfunction of the lubrication system, checking its performance

The chainsaw chain is dry and has a pale tint without shine.
The chain stretches relatively quickly.
The tire is very hot and may even partially melt the paint.
The oil from the tank practically does not decrease.
Efficiency of a sharp section of a chain

All these signs indicate that the lubrication process is not normal. To check the oil supply to the lubrication system, remove the side guide of the chainsaw and start it. Next, you need to slightly increase the speed, keeping an eye on the end of the oil line. If oil has entered, there is likely not enough oil to provide proper lubrication and you will need to clean or replace the filter and adjust the flow if possible. If this does not happen, the problem is more serious and requires further diagnosis.

There is a way to check the oil supply without removing the tires. To do this, point the end of the bar towards the side, for example, freshly cut stones on the cut side and maximize speed, while trying to keep the end of the bar no more than 10 cm away from the cutlet. If greasy spots begin to appear on its surface, then oil is supplied.

Problem solving

Once it has been determined that no oil is being supplied, further diagnosis is only possible if the oil system is completely removed. Of course, replacing filters helps in some situations, but this is very rare.

The most common faults

Broken oil hose. Sometimes this can be found during a visual inspection. The problem is solved by replacing the faulty part.
Missing threads on the oil pump shaft will help replace it.
Defective threads on the pump drive can also be eliminated by installing a new part.
There is no main shaft corkscrew (this is true for some instrument models, such as Homelite). You can fix this by installing a corkscrew that matches the diameter of the carnation in place of the original corkscrew, cutting it to the required length.
Lock track. It can be removed by blowing with compressed air or mechanically using a wire of the appropriate diameter.
The filter element is clogged.
Stihl MS 180, the pump of which cannot be disconnected, often clogs. You can try flushing with pure gasoline if that doesn't help replace it.
Chinese chainsaws (Gypsies) often have grooves cut out on the main gear, through which it is transmitted to the power of the star.

Malfunction of the individual lubrication system Stihl MS 180

Due to the fact that the Stihl MS 180 is one of the most common models of chainsaws, I would like to dwell on one of its malfunctions and describe how to fix it without replacing parts.

How to set the ignition on a Ural chainsaw?

Signs that the ignition system needs to be adjusted include loud chainsaw sounds hitting the carburetor or muffler. In this case, the fuel does not have time to completely burn in the internal combustion engine cylinder, which gradually makes starting more difficult and increases the consumption of fuel consumed.

The adjustment procedure looks like this:

First you need to remove the plastic cover of the saw's protective housing and inspect the space underneath it. If necessary, the parts of the instrument should be carefully cleaned with a hard brush;
Next you need to find the flywheel position adjustment screws. By turning them counterclockwise one by one, the operator will be able to move the element away from the standard magneto;
Then you need to attach the template used to the ignition coil;
After this, you need to turn the screws one by one in a clockwise direction. Once the engine's built-in flywheel is closely aligned with the previously set template, the operator can release the adjustment screws.

At the end, you will need to install the housing cover and monitor the operation of the tuned saw.

Chainsaw Ural

Detailed information on the operation of the Ural chainsaw can be found by downloading the instructions presented on the website below.

Technical characteristics of the Ural 2 Electron chainsaw

Dry weight of chainsaw without starter, kg no more than 11.6

Movement of the chainsaw when felling from right to left

Sawing performance, cm 2 s, not less than 100

Cutting speed at rotation speed 6200+: 200 rpm (calculated), m/s 11

Weighted total vibration acceleration on chainsaw handles, m/s 2, not more than 13.67

Sound level dBA, no more than 105

Overall dimensions, mm length 880, width 455, height 460/500

Note - At the request of consumers, the chainsaw can be equipped with a frame made of alloys and steel with a corresponding change in weight and overall dimensions

Engine

Cylinder displacement, cm 3 109

Cylinder diameter, mm 55

Engine power after 25 hours of operation kW (hp), not less than 3.68 (5)

Maximum power crankshaft rotation speed, rpm 6200 ±200

Fuel consumption at maximum power mode, g/kW.h. (g/l s.h), no more than 632 (465)

Carburetor adjustment

Adjusting the idle speed of the chainsaw engine.

The adjustment is made by changing the quality and quantity of the combustible mixture entering the engine cylinder. The amount of mixture is changed by screw 3 (Figure 1), which limits the rotation of the throttle valve control lever 1 towards its closing. The quality of the mixture is changed with screw 1 (Figure 2) of the carburetor. When adjusting engine idle speed, you should be guided by the following requirements:

a) The engine should idle steadily and the saw chain should not move along the bar.

b) There should be no strong smoke when the engine is running.

c) The engine should have good throttle response, that is, when the throttle control lever is pressed sharply, it should quickly gain speed.

d) It is recommended to adjust the idle speed in the following sequence: - start the engine and warm it up at low and medium speeds. Use screw 3 (Figure 1) to set the minimum stable speed at which the saw chain does not move along the bar. If the engine smokes heavily (a sign of an excessively rich mixture), then partially tighten screw 1 of the carburetor. At the same time, the engine speed will increase and the exhaust smoke will decrease; — after this, you should again set the minimum, stable engine speed by partially unscrewing screw 3 (Figure 1); — after this adjustment, it is necessary to check the engine response. To do this, sharply press the throttle control lever for 2-3 seconds until it stops. In this case, the engine should quickly gain momentum. If the engine stalls or has a “drop” in power, that is, it slowly picks up speed (lean mixture), then it is necessary to partially unscrew screw 1 of the carburetor. Engine speed will decrease. To increase the idle speed, screw 3 must be partially tightened. Check engine response again; — upon completion of the adjustment, secure screw 3 with locknuts 2 (Figure 1).

4.5.2 Adjusting the engine for maximum power

This adjustment should be made after a 25-hour run-in of the chainsaw in operation and after adjusting the engine idle speed. The adjustment is made with screw 2 (Figure 2) of the carburetor, by making the combustible mixture leaner or richer at engine operating mode. When the screw is partially screwed in, the mixture becomes lean; when unscrewed, it becomes richer. The most advantageous position of the carburetor screw 2 is determined experimentally by checking the operation of the chainsaw when sawing wood. In this case, you should be guided by the following requirements for the operation of a chainsaw.

a) The chainsaw engine must develop power that ensures high sawing performance with moderate exhaust smoke.

b) The chainsaw engine must have good throttle response, must not overheat, slow down and stop when sawing wood (overheating of the engine is a sign of an excessively lean mixture and engine overload). Due to lack of experience, there may be cases of complete misadjustment of the carburetor, in which case the chainsaw stops working normally and starting the engine becomes difficult.

Technical characteristics of the Ural tool

A qualitative indicator of the Ural brand is a powerful and economical two-stroke gasoline engine. Ease of use and lightweight design make it indispensable in such work as building a wooden house, sawmill, logging, and household preparations for the local area. Let's look at the characteristics of the Ural chainsaw with a detailed description of the advantages of the tool.

Gas engine

Designed for professional purposes, the Ural 2 Electron chainsaw has the following engine characteristics:

Power 5 l. With.
Single cylinder
Piston diameter - 5.5 cm, cylinder volume - 109 cubic meters. cm.
Push-pull
Gasoline consumption at maximum power is 0.63 liters, at working power – 0.47 liters.
The crankshaft operating cycle frequency is 2600 rpm.

The two-stroke engine is powerful and reliable enough to quickly chop wood within 11 cubic meters. in a minute.

Cylinder

To improve wear resistance, the aluminum cylinder is coated with a silicon-nickel alloy called Nicosil. Cylinder volume 109 cc. cm provides sufficient power for a chainsaw. The cylinder has an inlet channel for the gasoline-gas mixture, exhaust channels and purge channels. The execution of certain proportions of the sizes of the exhaust and purge holes ensures high-quality ventilation of the cylinder cavity from exhaust gases.

Gas tank

The volume of the fuel tank is 1.6 l, and for oil - 0.24 l.

To increase the durability of the engine, you should use the grades of gasoline specified by the manufacturer in the passport. In a two-stroke engine, it is worth using special grades of oils that combine well with gasoline and do not leave a large sediment when burned in the chamber.

The gas tank is filled with a mixture of AI-72 gasoline and M-8B engine oil. The lubricant tank is filled with oil in summer, and in winter - with the addition of gasoline in a ratio of 3/1.

Carburetor

A carburetor is necessary to create an air-fuel mixture of a adjusted proportion, entering the cylinder in certain doses. The tool uses a modification of the KMP-100U carburetor. It must be adjusted at the factory, but you can independently adjust the unit in various operating modes to obtain maximum engine efficiency.

Before first use, it is recommended to keep the tool for several hours with a tank filled with fuel to saturate the carburetor membrane.

Bar length and chain

The length of the working surface of the saw is 46 cm. A cutting chain is placed on it, which requires periodic sharpening and tension.

Advice: during prolonged downtime of the tool, it is better to remove the cutting chain, and it is more convenient to sharpen it on a chain put on the saw.

The weight of the assembled chainsaw is about 12 kg.

Ease of use

The Ural 2 Electron chainsaw is equipped with high, comfortable handles that allow you to work in an extended position and under thick snow cover. The tool frame and holder are equipped with vibration-reducing hinges and spring units for safe operator operation. The unit maintains operating condition in the range of high and low temperatures. High engine power speeds up the work process.

Chainsaw repair Ural 2

Any tool can fail over time. This is an indisputable fact. It should, however, be noted that repairing the Ural 2 electron chainsaw mainly comes down to working with the engine. Such units in the saw can stall under a certain load, hold idle speed poorly, and so on.

The reason the saw stops working immediately after it starts may be a faulty carburetor. It will have to adjust the jets in order to receive the appropriate fuel supply.

When a heated engine stalls, most likely you will have to change the pistons, spark plugs, or clean the air filter. It must be said that a fully serviceable motor in a saw simply must work without jerking. If a ringing knock is heard during its operation, this may indicate a malfunctioning cylinder.

Video: carburetor adjustment

The Ural 2 Electron chainsaw has long established itself as an excellent workhorse, with high performance, ease of repair and reasonable cost. Almost the only thing that can happen to this tool during proper operation is that the carburetor settings are lost.