What gasoline pour into a chainsaw

The chainsaw is considered the most popular type of hand tool used for working with wood. Unlike electric saws, it is adapted for offline usethat is a convenient, and sometimes the only possible effective way to cut logs and other wood materials in remote areas. To do this, you only need to have on hand fuel for chainsaws in the required quantity and know the rules for refueling the tool.

The device fuel system chainsaws

Most modern chainsaws are driven by a single-cylinder two-stroke internal combustion engine operating on 92nd or 95th gasoline.. Older domestic models need to be refueled with an octane rating of 80.

In order to facilitate the design, chainsaws are not equipped with a gearbox.

The frequency of rotation of the drive chain drive is determined by the speed characteristics of the motor, which usually exceed 10,000 revolutions per minute. Therefore, the fuel mixture for a chainsaw equipped with a high-speed engine must contain special motor oils.

Chainsaw fuel system includes:

• filling tank;
• fuel filter;
• carburetor;
• hoses through which fuel is fed for mixing with air and then into the engine cylinder.

Fuel filter mounted on the end of the hose lowered into the tank. When the engine is running, a small pump built into the carburetor provides uninterrupted pumping of fuel. To start the engine requires mechanical pumping gasoline additional device - primer. The tank is protected from creating a vacuum while the liquid level is lowered during operation by a special air valve. Carburetor is responsible for the correct ratio of fuel to forced air in the process of creating the air-fuel mixture, which is fed to the combustion in the cylinder.The entire fuel system works in concert with the ignition system in time with the piston movement.

Requirements for fuel used

The main component of the fuel carburetor engine is unleaded gasoline. Experimenting with the question of what kind of gasoline to pour into the chainsaw should not be. His brand must comply with the requirements set forth in the passport of the instrument and instructions for its use. Breaking this rule may result in:

• to a sharp decrease in power saws and the unevenness of its work in the case of the use of gasoline with a lower octane number;
• engine overheating when the recommended octane number exceeds the nominal value.

Dilute gasoline for chainsaws with questionable mixtures is strictly prohibited, so you should use the services of the nearest gas station. It must be remembered that in addition to the octane number, automobile fuel has many other indicators that vary with the season.

Do not store large stock for a long time. In winter conditions, the engine can not start on gasoline, purchased in the summer.

Oil assignment

Since the two-stroke engine is not equipped with a lubrication system, it is necessary to fill the chainsaw with a pre-prepared mixture of gasoline with special oil. On domestic models are often used brand M8, M12, MHD-14M. Well-known foreign tool makers insist on using their own brand oils, which are developed in collaboration with the leaders of the oil refining industry. But practice shows that replacing one quality oil for two-stroke engines with others does not negatively affect the characteristics and duration of equipment operation.

According to the method of production of motor oil base, they are divided into:

• mineral;
• semi-synthetic;
• synthetic.

In this list they are listed in order. increasing quality and price. Therefore, if you pour synthetic oil for the Stihl chainsaw into the Husqvarna chainsaw, it will not notice the difference.

Fuel Mixing Rules

Chainsaw mix is ​​recommended to cook directly before starting work. Keeping it for more than 10 days can lead to chemical reactions between the additives that make up the oil and the components of gasoline.This will adversely affect the operation of the engine and the composition of the exhaust gases.

If the use of the tool is stopped for a long time, the contents of the tank are drained or idled before the motor stops.

Dilute oil in gasoline should be in the proportion recommended by the manufacturer of the tool. For different models, the ratio can vary from 1:20 to 1: 100. For the Chainsaw Calm 180 it is 1:50. This means that for 1 liter of gasoline AI-92 you need to take 20 ml of oil. Deviation from these figures may affect the operation of the motor:

• a decrease in the proportion of oil will lead to mechanical wear of the cylinder and piston;
• excessive amounts of oil will cause incomplete combustion of the mixture.

It is strictly forbidden for two-stroke engines to use oil intended for other types of engines, especially testing.

How mixing is made

In order not to spend a lot of time on preparatory operations and not to store a large amount of fuel mixture, it is usually prepared in an amount equivalent to 3-4 petrol chainsaws. Proper mixing can only be done if available. measuring dishes.

Some tool makers include special containers with markers for the level of pure gasoline and its mixture with oil.

In general, you need to take a clean and dry bottle or canister and pour the required amount of gasoline into it with the help of a funnel. After that, dilute the gasoline, adding oil to it. Measure it conveniently with a syringe the desired volume without a needle. Cap the lid and achieve uniform mixing by oscillating movements. Applied oils are painted in bright colors, so the finished mixture will have a shade by which it can be easily distinguished from pure gasoline and confidently refilled into the tank.

How much gasoline consumes a chainsaw

The fuel tanks of most gasoline saws have a volume of 0.3 to 1.0 liters. How often a fuel mixture needs to be poured into a chainsaw depends on the brand chosen, engine power and work intensity. At logging and wooden construction used professional chainsaws, characterized by high power and a long period of continuous operation. For housekeeping in a country house, in the country or in the periodic production of wood products, less productive but lightweight and convenient household models are used.For a professional tool with a capacity of 5-6 kW, fuel consumption when cutting logs can reach 3.0 l / h. In less powerful models with an engine of 1.5-2.0 kW, it fluctuates at a level of 0.6-0.8 l / h.