Ural chainsaws - characteristics, malfunctions, review of models

Chainsaws Ural – these are high-quality tools for sawing wood and processing it. The manufacturer created such models for felling forests, so initially they were not familiar to modern farmers. But over time, these saws have firmly entered private life and are used for collecting firewood, processing building materials and other purposes.

The design of the Ural chainsaw is simple and straightforward. Its heart is a durable carburetor and two-stroke engine. Comfortable handles make it easy to hold the tool. Light weight and small dimensions made it possible to work with the saw even at home.

Benefits of the tool

High performance.
Low weight, compact.
Built-in gearbox that turns the tire 90 degrees.
A hydraulic wedge that allows you to cut trees in the desired direction.
Technology for automatic supply of lubrication to the chain.

Each product comes with an instruction manual. You can also use various attachments, pumps, and discs with saws.

How to properly break in a new Ural chainsaw?

This procedure is required for every new tool or repaired saw. By running in, the suitability of the product is increased and maximum engine performance can be achieved.

Fill the saw tanks with oil and gasoline mixture.
Place the chainsaw on a flat surface and start it.
Let it work for 10 minutes (you can cut small branches).
Turn off the engine, wait a while: it should cool down.
Repeat the procedure.

During break-in you need to use one tank of fuel mixture. After this, all structural elements will be ready for normal operation and will rub against each other.

Chainsaw Ural 2 Electron: technical characteristics

The model was designed as a productive tool for felling trees. It has the following characteristics:

movement when felling: from right to left;
device weight – 11.6 kg;
productivity: 100 sq. cm per second;
rotation speed: 200 rpm;
noise level: 105 dBA;
engine power: 3.68 l. With;
fuel consumption is 632 g/kW.h.

Chainsaw Ural 2t Electron, if necessary, can be equipped with various attachments. It is also used as a basis for homemade products.

Instructions for the Ural-2T-Electron chainsaw

Initially, when creating the Ural chainsaw, it was assumed that its repairs would be carried out by non-specialists in the field. For this reason, detailed step-by-step instructions were created on how to repair rather complex mechanisms on your own in very primitive conditions. The instructions for the Ural chainsaw differ from the instructions for other chainsaws in that it contains much more information required for operation. It provides information on the principles of operation of the cooling system, gearbox, magneto and other components of gas-powered tools. The procedure for preparing the device for operation and the process of running in the engine are described in great detail. In addition, the instructions provide recommendations for preparing the workplace, felling timber, and bucking trees.

Adjusting the Ural chainsaw carburetor

If the tool does not start or does not work well, you need to clean and adjust the operation of its carburetor. You can adjust the carburetor on a Ural chainsaw with your own hands. To do this, you first need to clean the spark plug.

Setting up the Ural chainsaw carburetor at idle speed

Start the tool and warm it up at medium speed.
Find the idle speed screw and turn it to set the minimum stable speed.
If the engine starts to smoke, partially tighten screw 1.
Partially turn the idle speed screw, set the speed to minimum.
After this, check the quality of the saw. If the engine picks up speed quickly, the adjustment was successful. If the engine stalls or slows down, screw 1 is turned out again. Next, adjust the idle speed screw and secure its position.

Setting for maximum power

It is done after 25 hours of running in the saw and after adjusting the idle speeds.

Use screw 2, turning it in one direction or the other.
When screwing, the power increases; when unscrewing, it decreases.
After each adjustment step, the saw must be checked by sawing small wood.

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.

Homemade chainsaws Ural

From these universal devices you can make various homemade products. Let's consider in what areas the tool can be used and what can be made from it.

Do-it-yourself boat motor from a Ural chainsaw. The torque of the saw motor must be transferred to the boat propeller. A durable adapter is installed between the drive gear and the propeller shaft.
Tricycle. The task is to use the power of the motor on the wheels of the car, for which you need to install an old bicycle chain. The basis of the device is a frame to which three wheels and a steering wheel are attached.
Homemade sawmill from a Ural chainsaw. A guide should be made along which the frame with the saw attached will move. The structure can be equipped with lifting fasteners that will fix the thickness of the lumber.
Snowmobile made from a chainsaw Ural. You will need to make a frame with shock-absorbing suspension, steering wheel, gas and clutch. A gear is installed on the drive shaft, the size of which is slightly larger than the saw sprockets.
Motor drill from chainsaw Ural. The saw motor is connected to the structure using a worm gearbox. You also need to connect the auger.
Karting. A more complex device that requires the manufacture of a durable frame, seat, steering wheel, and wheels. They use a saw motor that will rotate the wheels and power the tool.

Malfunctions of Ural chainsaws and their elimination

Malfunction	Cause	Elimination
Poor quality of cut, the saw blade is difficult to sink into the wood	The chain is dull	Sharpen the chain
The chainsaw is “slipping”	Carburetor needs adjustment	Adjust the carburetor yourself or contact a service center
Tire too hot, chain stretches quickly	There is no normal oil supply due to a clogged filter or a broken hose, or a defective thread on the pump drive gear	Clean the filter, make sure the oil hose is intact, replace the gear

Chainsaw Ural Profi UBP 4500

The tool is needed for felling trees, collecting firewood and working in the garden.
It features a powerful starter, automatic chain lubrication and an inertia brake. Main characteristics:

power at 5.1 liters. With;
the fuel tank is 0.55 l;
oil tank – 0.25 l;
saw chain length: 40-45 cm;
weight – 7.8 kg.

Appearance on the market

At first, soldiers of the Soviet army were equipped with these devices, and only by the 60s of the last century the company began making equipment for logging. At that time, the mass of the instrument reached almost 12 kilograms with an engine power of 5.5 horsepower. The saw blade could be turned at a right angle during operation, which greatly facilitated the work of the fellers. The unit was equipped with a hydraulic wedge, and the chain had special forced lubrication.

It is noteworthy that in the St. Petersburg Museum of Artillery there is even a sample of a Ural gasoline saw made in 1946. The instrument even received a gold medal during an exhibition of technical achievements that took place in Brussels.

The USSR was then in isolation, the developed equipment was highly valued, so it was distributed according to the order. This distribution system did not allow ordinary people to own this chainsaw.

Malfunctions and repairs

Breakdowns can often occur when working with a saw. To fix them, you don’t have to run to a specialist. Some problems can be fixed by yourself. To do this, you first need to recognize the cause of the breakdown, and then follow the instructions. In some cases, additional spare parts will be needed.

Chainsaw Ural: no spark

In this case, one of the following problems may occur:

the spark plug is broken, you need to try to clean it or replace it;
There is too much oil in the fuel mixture, causing it to settle on the walls of the carburetor. You need to change the mixture and clean the carburetor.

Ural chainsaw does not start

If the chain is not lubricated, this breakdown may occur. You need to inspect the oil reservoir. Cracks or holes may have formed in it. It is better to replace it with a new tank.

Setup instructions

Before work, you must make sure that the saw is suitable for use, follow all safety regulations and carry out a test run.

Get to know the device

Before starting, you must read the instruction manual and assemble the device correctly. This process will not take much time if you follow the directions and instructions. For more details, see the article on adjusting the carburetor of a Ural chainsaw. Deviations from the rules for carrying out this procedure may well result in damage to the system.

And so, to set up a chainsaw you need:

Fill the fuel compartment with fuel;
Open the fuel supply valve, closing the air damper securely;
When the damper is closed, you should not pull the starting cord more than 5 times, as excessive zeal will simply cause an overflow of the fuel mixture. Some modern models are very quiet, so you will need to listen for the engine to start;
After the first “flash”, it is necessary to open the air damper;
Then pull the starter again and the engine will start;
Very carefully open the throttle valve (this is necessary to turn off the fast idle);
When starting the chain saw, the chain brake must be applied.

These simple tips will help you avoid trouble and get your chainsaw working properly. Do not ignore the operating instructions, and your unit will serve you for a very long time! Every chainsaw owner needs to know what to do if the chainsaw does not start.

Chainsaw Ural Profi UBP 3900

The universal professional model can be used when caring for garden plots or for felling trees.
It has an improved clutch system, and it is possible to block the start of the chain. An inertia brake is also provided. Specifications:

the engine has a power of 4.08 liters. With;
fuel tank size 0.54 l;
lubricant tank – 0.27 l;
tire size is 35-45 cm;
device weight – 7.9 kg.

Chainsaw Ural BP 3800

The compact and small model can work with timber, cut down trees, and process branches.
It has an inertial braking system and is characterized by high performance. Comfortable to work with. Specifications:

the model has a power of 5.03 liters. With;
tank for fuel mixture - 0.62 l;
oil tank – 0.25 l;
the tire has a length of 35-45 cm;
weight – 6.9 kg.

Today, saws from the Ural company are maximally adapted to difficult working conditions.

Advantages

The main advantages of the Ural Electron 2 chainsaw include:

high power among competing chainsaws;
simple adjustment of the tool after final assembly out of the box, which the average man can handle;
the presence of detailed operating instructions with detailed diagrams of all components and the structure of the motor;
excellent cut and cutting quality;
moderate fuel-oil mixture consumption for its class;
comfortable grip for felling trees while standing, due to the upper position of the handles;
“indestructible” motor with a huge resource due to the use of high-quality and high-strength parts;
endurance to heavy loads;
the rotating gearbox allows you to move the saw bar to a horizontal position, making it convenient to hold the saw with a straight back;
easy to adjust chain tension;
the engine can operate with low quality fuel;
cheap spare parts.