A chainsaw is started by means of an engine running on a mixture of gasoline and adapted to environmental conditions oil. It is necessary to observe the proportions of oil and gasoline for the chainsaw, then the device will work stably. To achieve high power, the saw is used in working at high engine speeds. Therefore, high demands are placed on the quality of lubricant and fuel.
What gasoline to fill in a chainsaw
Find out which fuel is recommended for this type of device. Since there is a 2t (two-stroke) motor on chainsaws, and it is impossible to put an oil pump on it, clean gasoline for saws is prohibited. A fuel mixture of fuel and oil is poured into the saws. The rules for refueling chainsaws of different models are regulated by the manufacturer.
Consider what kind of gasoline to pour into a chainsaw, experts advise. Chainsaw refueling is carried out with fuel with an octane rating of more than 92. To create a mixture, do not use fuel with an expired shelf life made of condensate, which includes water and various impurities.
Domestic saws are powered by AI-80 fuel. For foreign modifications, AI-92 gasoline is needed. It often happens that the fuel grade AI-95 is indicated in the instructions. But experts believe that AI-95 gasoline, which is produced in the Russian Federation, does not meet the quality standard. This fuel contains many anti-knock additives.
To use such gasoline for a chainsaw when creating a mixture is possible only with its high quality. The complexity of the application lies in the use of additives, with the help of which manufacturers increase the operational characteristics of fuel, which has a lower octane rating. Therefore, pouring 95 gasoline is not recommended.
How to choose oil for a chainsaw
Two-stroke chainsaw engine oil should be selected according to more stringent requirements. Experts recommend the use of mineral or semi-synthetic lubricating fluid, which is designed for 2-stroke ICEs used at high speeds.
The advantage of using mineral oil for chainsaws is its low price. Synthetic fluids are more expensive, but have improved quality indicators and comply with European standards.
Synthetic oils can be used in a large temperature difference, they do not create deposits that contain beneficial additives for the motor.
Motor oil is produced by a large number of manufacturers, both foreign and Russian. The best quality oils are those made by Husqvarna. According to some characteristics of branded products, domestic oil of the Lukoil brand is inferior.
Advantages of branded company products:
- economical consumption;
- preservation of quality during prolonged storage or operation in adverse conditions;
- a small amount of toxins;
- lack of soot.
In professional and household saws, oils prepared using American API-TB technology are used. An analogue of these products of Japanese production JASO-FB is also used. Do not use liquid that was created for 4-stroke motors to make a mixture.
The color of the oil, for example green, red, means that the products are produced by some company. When selecting indicators and product characteristics, color is not taken into account. Care must be taken to choose engine oil, the manufacturer and composition of which is unknown.
Before will be obtained additional data on performance and quality of products, the use of this oil is better to give up yet. You can mix together motor oils that have the same characteristics of purpose and composition, which are products of famous brands and are of high quality. Do not mix mineral and synthetic oils.
To prepare a high-quality mixture, you need to use those branded oils or their analogues that are recommended by the operating instructions of the chainsaw. For example, fuels and lubricants of the Husqvarna and Stihl categories can replace each other.
Experts do not recommend the use of lubricant in the gearbox for chainsaws, which is available for 2-stroke engines of mopeds, motor boats. The engines of such devices are used in milder external conditions, due to which they have low requirements for quality indicators.
Video: Husqvarna Chainsaw Oil to Oil Ratio
How to breed gasoline for a chainsaw
Consider how the mixture for a chainsaw is prepared. It is necessary to calculate the correct ratio of gasoline and oil for a chainsaw. For a chainsaw they take fuel with a high octane rating: AI-92 or AI-95.
To prepare the fuel mixture, it is necessary to add 30 g of oil per 1 liter of gasoline, which corresponds to the design of the saw. The resulting fuel fluid is poured into the fuel compartment. Before you dilute gasoline, you should consult a service specialist who specializes in repairing chainsaws.
In order for the saw to have a long service life, it is necessary to properly prepare the gasoline-oil mixture, for which only AI-92 and AI-95 brands can be used. The fuel must not be leaded, otherwise the internal combustion engine may break. You cannot use an old product that has expired, because over time, fuel can change the octane number. The proportion of lubricant and fuel is strictly maintained.
You should not save when choosing oil for chainsaws brand Husqvarna and others. The proportions must be observed due to the fact that excess oil can lead to an increase in soot at the nodes of the chainsaw. Excess gasoline can cause piston damage and engine failure. So, 1 liter of fuel is mixed with 20-50 ml of oil. Husqvarna recommends adding 100 ml of grease to 4 liters of gasoline. This proportion is suitable for saws with power up to 1.5 kW.
For designs with a power of more than 1.5 kW, an oil ratio of 1:50 is used. That is, it is necessary to dilute gasoline as follows: add 100 l of gasoline for chainsaw in 100 ml of oil. Partner recommends diluting the fuel fluid when refueling the chainsaw with the following standards: 100 ml of grease is added to 3.3 liters of fuel.
When using super-synthetic oils, the indicators are 1: 100. That is, the fuel mixture for the chainsaw must be prepared according to the recipe: add 1 ml of lubricant per 1 liter of fuel. When choosing components, you need to use the information that is given in the instructions for any modification of the saw.
Often, plastic bottles and other containers are used to mix the ingredients. With plastic and glass should be careful. When mixing the components, static electricity may appear. Care must be taken to prevent pebbles, sand or water droplets from entering the fuel mixture. The fuel mixture must be mixed well. The prepared fuel mixture must not be stored for more than a month, as materials may oxidize and the composition of the mixture will change.
Damage to the motor, which was caused by fuel expired, acknowledged in the service is not a guarantee. At the same time, the cost of repair can reach 80% of the price of a new design.
After all work with the use of a chainsaw has been completed, you need to spend the remaining fuel, turn off the engine, remove the remaining mixture.
For best operation of the device it is necessary to make a mixture that will provide smooth operation of the motor, complete combustion of gasoline-oil mixture without the occurrence of soot, smoke or damage.
How to refuel a chainsaw
Consider how to refuel a chainsaw. If the saw is not correctly threaded, this can endanger the life and health of the device operator.
There are rules that must be followed when refueling a saw:
- do not spill oil and fuel mixture;
- the place where the saw will be refueled must be level;
- the place must be removed from the zone where the device will be operated by more than 2 m;
- the site should be located away from fire; no smoking in this place;
- while the fuel tank is filling, you need to fill the oil tank, which is designed to automatically lubricate the chain; You can distinguish containers by special icons;
- before pouring, wipe the neck of the containers with a rag;
- during operation, grease and gasoline must not be spilled, therefore care must be taken when unscrewing the canister lids; when refueling, it is better to use a funnel;
- care should be taken when tightening the lid with the lock;
- experts advise to fill the tank not completely, but leave a little free space.
During operation of a correctly refueled chainsaw, it is necessary to regularly check the tightness of the containers and the operation of the motor. If the chain heats up too much, or gasoline is consumed too quickly (faster than oil), this should cause wariness. Before starting work, a chainsaw is run-in.
With the correct operation of the chainsaw, 1 tank for gasoline should be enough for 30 minutes of operation of the device with maximum load. When gasoline runs out, the lubricant in the second tank still remains, but in small quantities.
The mixture must be prepared in the amount necessary for the implementation of a small amount of work, since with prolonged storage of the solution its quality characteristics deteriorate. The prepared mixture must be spent within a few days.
A fuel mixture that has been stored for about a month reduces engine performance. Resinous substances are formed in the nodes, and soot appears, piston rings lose their mobility. The longest shelf life of the mixture is no more than 2 weeks. During this period, the solution will not lose its quality. If the air temperature is more than 25ºC, then the shelf life of the product is reduced to 10 days.
Some experts allow the use of an expired mixture to save. To do this, you can spend it gradually, gradually mixing in a fresh solution in a volume of not more than 10% of the total amount of the mixture. The finished gasoline-oil mixture must be filtered.
If you follow all of the above recommendations, you can ensure reliable operation of the chainsaw. Also, when performing work, safety precautions must be observed, since the chainsaw operates using a chain that rotates at high speeds and, if the operating rules are violated, can be dangerous for the worker himself and those around him.