Gasoline selection
Many are interested in what gasoline the chainsaw works best on. Most models require clean, high-quality fuel with an octane rating of no higher than 90. Sometimes there are recommendations on the network to mix 92 or 93 gasoline with 95 to increase its efficiency. In no case should this be done, since higher-octane grades are often faked, and no one will dilute the A92 or AI92 grades.
Therefore, when choosing which gasoline to pour into the chainsaw in the domestic market, it is recommended to use just such a fuel. It is necessary to make sure that the gasoline is fresh enough, since during long-term storage in it, the release of resins and other elements that deteriorate quality begins. Manufacturers recommend using:
- Chainsaw Stihl (Stihl) 180. it is better to refuel with gasoline A90 and higher;
- Stihl 250. runs on gasoline with an octane rating of at least 90. Do not use fuel with an ethanol content exceeding 10%;
- Partner. use only unleaded gasoline with an octane rating of at least 90;
- Husqvarna. gasoline with an octane rating of at least 90, it is allowed to use clean fuel or with the addition of tetraethyl lead. Catalyzed engines require a fuel / oil mixture made from unleaded gasoline.
As a rule, the owners of such tools use AI92 gasoline, which fully meets the requirements of manufacturers. However, for most domestic chainsaws, A72 or A80 gasoline is quite suitable. It must also be borne in mind that the failure of the chainsaw due to the use of low-quality fuel is NOT a warranty case.
Gasoline to oil ratio
The standard ratio of oil to gasoline, which is relevant for most chainsaws, is 1 to 50. This means that 20 ml of oil must be added to 1 liter of gasoline. However, each manufacturer has its own requirements for the composition of the fuel mixture, which are due to the design of the engine, the features of its parameters and other factors. It is impossible to determine on your own what proportions are best suited for a given instrument.
Complete and accurate information can only be obtained from the user manual. If it does not contain any indication of the composition of the fuel mixture, then you should adhere to common practice and make it in a ratio of 1: 50. There are other options, from 1: 20 to 1: 50.
Figure 3. The ratio of oil and gasoline for the fuel mixture
Storage conditions for the finished mixture
Most users usually prepare the fuel mixture for future use. This is explained by the saving of time. it is believed that it is more correct to mix a large volume once, and then simply pour fuel into the tool tank. This point of view is valid, but with important limitations. The finished mixture should not be stored for too long, as irreversible changes occur in it.
Ideally, it should only be prepared for one day, but this is considered by many to be too irrational a decision. The permissible shelf life depends on the ratio and grade of the components. Most experts recommend NOT storing the mixture for more than 3 months. It is recommended to use metal canisters and keep the mixture under a canopy, away from direct sunlight.
What fuel to use for a chainsaw?
Choosing the right fuel is an important and significant issue. The only correct approach to its solution is to carefully study the user’s manual, which indicates the type and brand of fuel, the proportions of mixing gasoline and oil, and also reflects all the features of this tool. Modern standards require the use of high-octane refined fuels and special types of engine oils.
Oil selection
The chainsaw uses two types of oil. motor oil and chain oil (adhesive). They should not be confused because the tasks they perform are different from each other. Any gear oil can be used to lubricate the chain, although manufacturers always recommend using the same materials. Engine oil requirements are stricter. On this issue, all manufacturers are unanimous. you should use the oil of the same company that made the dust.
There is no lubrication system in two-stroke engines, which is replaced by the presence of some amount of material in the fuel. The carburetor injects a fuel-oil mist, which simultaneously lubricates all parts. The residues are then burned off in the cylinder. If specific instructions are available in the instructions, any two-stroke oil can be used.
For different tool models, manufacturers recommend:
- For the Stihl 180 chainsaw. the best option is STIHL HP, HP SUPER or HP ULTRA oil;
- Stihl 250. use STIHL HP, HP SUPER or HP ULTRA correctly, STIHL HP ULTRA is the most effective;
- Partner. any two-stroke oil. Do not use automotive or marine oil, it will damage the engine;
- Husqvarna. Manufacturer recommends the use of HUSQVARNA two-stroke oil. Do not use oil for 4-stroke engines or water-cooled 2-stroke engines.
Chainsaw device features
The chainsaw is a chain hand tool, the cutting body of which is driven by a carburetor engine.
Typically, this is a single cylinder two-stroke engine.
This design is simple, economical, capable of working in any position.
The structure of the saw, in addition to the engine, includes:
- Carburetor;
- Tire;
- Cutter (chain)
- Starter;
- The clutch is centrifugal type;
- Ignition, fuel supply system, air filters;
- Chain lubrication system;
- Muffler;
- Handles.
The motor can be positioned vertically (heavy duty professional models) or horizontally (light household tools). Heavy-duty saws are used for felling and crosscutting trunks and have a large frame size. Lightweight saws are used for cutting branches or sawing wood and are usually purchased by private house owners, farmers, gardeners, etc.
The design of the tool is simple, which is a guarantee of high strength and reliability. The engine shaft drives the drive sprocket through the clutch, which moves the chain along the tire using the drive sprocket. The two-stroke engine does NOT need a camshaft, valve system and other elements, which also contributes to increased structural reliability.
The centrifugal clutch is equipped with two clutches, which at low shaft speeds are pressed against each other, and when the rotation speed increases under the action of centrifugal force, they are pressed against the outer part of the clutch and drive the drive sprocket. The power of the motor determines the type of chain. the more powerful the saw, the larger the chain pitch (the distance between the teeth, which determines the performance of the tool).
Refueling a chainsaw
For beginners, the question of how to refuel a chainsaw is especially relevant. However, the refueling process itself is NOT difficult. The main task is to formulate the fuel / oil mixture in the correct proportions. They are indicated in the instructions for the tool. Before refueling, you should carefully study the information given by the manufacturer in order to exclude the possibility of errors when drawing up the fuel mixture.
How to properly refuel a chainsaw to extend its service life?
The engine of a modern chainsaw is a single or two-cylinder carburetor engine. As a rule, two-stroke models are installed, although four-stroke models are also occasionally found. The rotational speed of the working shaft reaches 13.5 thousand revolutions, which puts forward stringent requirements for the quality and composition of the fuel mixture.
Manufacturers inform users in sufficient detail how to refuel a chainsaw, but for many this question remains not entirely clear. Let’s take a closer look.
How to mix the fuel mixture correctly?
The mixing process is quite simple. you need to measure out a certain amount of oil and pour it into the corresponding volume of gasoline. It is necessary to prepare a clean container for mixing. Usually, plastic canisters are used, which are quite suitable for this purpose. However, some species have a serious drawback. they accumulate static electricity, which can lead to the formation of a spark and ignite the fuel mixture.
The best option is to use a special canister with two necks, which are filled with gasoline and oil, but they are quite expensive. For accurate dosage of oil, many use medical syringes with applied divisions. The more carefully the amount of the mixture is measured, the longer the service life and the higher the quality of the tool.
How to breed
Stihl saw fuel mixture is prepared by mixing high-octane gasoline and two-stroke engine oil. The proportion of oil and gasoline for a chainsaw is as follows: if the power of the unit does not exceed 1.5 kW, then the ratio will be 1:40 (i.E. 25 ml of oil per liter of gasoline), and with a power higher than this value. 1:50 (20 ml for 1 l).
You need to dilute gasoline for the Stihl chainsaw in a separate Canister, in no case do not pour the components into the saw’s gas tank separately. THESE engines have an oil pump and the ability to install it, so only ready fuel is poured into the tank. There are even special canisters with two necks on sale, so that it is more convenient to dilute the mixture, but you can add oil to gasoline for a chainsaw and in an ordinary Canister.
It is better to observe the proportions of refueling the chainsaw as accurately as possible: excess oil will create carbon deposits on the candles and pistons and provoke detonation during fuel combustion. This can shorten the engine life. In addition, the user of the saw in this case is forced to Inhale Exhaust gases from the unburned fraction. At the same time, excess gasoline can damage pistons due to insufficient lubrication.
Some folk craftsmen, in case of the absence of special measuring accessories, advise using a plastic bottle: a full cap (from the same bottle) of oil is poured into a half-liter container filled with gasoline. The output is an approximate ratio of 1:50.
It is better to calculate the amount of mixture for refueling in advance. Based on the expected volume of work and the declared consumption of this engine. The volume of the tank in most chainsaws is about 0.5 liters, a 2 kW engine will consume approximately 1.2 liters during operation (for more precise characteristics of the saw, see the instructions). Thus, it makes no sense to prepare a mixture in volumes exceeding 3 fillings in a row.
Before starting the preparation of the mixture, it is recommended to thoroughly clean and dry the neck of the canister and the area around it in order to avoid the ingress of foreign impurities: dust, water, etc. So that it does not get into the gas tank, and then into the engine.
The proportion of oil and gasoline for the Stihl chainsaw: types of oil, the choice of gasoline and the correct mixing
One of the fundamental characteristics of the durability of chainsaws and their high-quality operation is the correct observance of the ratios of the constituent liquids when preparing the fuel mixture. It is known that an insufficient amount of oil leads to excessive friction of parts and their rapid wear, and excess oil leads to the appearance of carbon deposits and engine overheating. This article will discuss the proportions of oil and gasoline for the Stihl chainsaw. This is especially important for beginners who have just purchased a tool.
Shelf life of the finished fuel mixture
Motorists know that it is not worth storing gasoline for a long time, and the finished fuel mixture deteriorates even faster. Mix the required proportions of oil and gasoline for the Stihl chainsaw before starting work. Manufacturers allow storage of finished fuel for up to one month, and experts recommend that this period be reduced to 10 days. Immediately after mixing, the solution begins to lose its initial properties and over time it becomes completely NOT of the same quality as it was prepared. Learn to prepare enough saw fuel to be consumed in one go. It comes with experience. The mixture should be stored in a gasoline-resistant, opaque, tightly closed container. For this, any canisters made of plastic metal for combustible materials are suitable. And also use a container of oil or glass containers made of dark glass.
Summing up
In order for the chainsaw to serve for many years, never fill it with old gasoline, and you do not need to use grade 95 and even more than 98 gasoline to prepare the fuel mixture, only 92. Also, do not forget about the purity of gasoline. no odens!
I hope now you are NOT wondering which gasoline for a chainsaw is suitable and which is not very.
Which brand to use motor oil?
For each model, the manufacturer advises a list of materials to be used. It is better for the user to adhere to THESE recommendations, because the warranty does not cover tool breakage due to inappropriate fuel and lubricant. In this case, the owner pays for the repair of the chainsaw himself, which can be up to 80% of its cost. When you can’t follow the manufacturer’s recommendations, try to follow these rules:
- Use oil only for 2-stroke engines.
- DO NOT use after the expiration date.
- DO NOT add used oil with a large amount of impurities to gasoline, since the mechanisms of the tool may be damaged.
- Chain lubricant cannot be used for fuel mixture.
- It is preferable to use synthetic and semi-synthetic oils, which are more expensive than mineral oils, but do not form harmful deposits.
Correct proportions
Most often, when preparing fuel for saw operation, proportions of 1:50 and 1:40 are used. This means that for 50 or 40 parts of gasoline, one part of oil is added. Calculations are made as follows: 1 l = 1000 ml, 1000/50 = 20 ml or 1000/40 = 25 ml, that is, in the first case, pour 20 ml into each liter of gasoline, and in the second. 25 ml of oil. If there are no instructions and you do not know the proportions for preparing the mixture, then use the following recommendations:
- Tool and oil from the same brand. For example, for a Stihl chainsaw, the ratio of gasoline to Stihl oil will be the same as indicated on the container with oil, usually 1:50.
- In the substances used for the mixture, different brands. a proportion of 1:40 is chosen.
- There is only one brand, but there is no information on the ratios of substances in the oil. they dilute 1:40.
- In the absence of any data in dust and oil, dilute the mixture in a ratio of 1:40. The only thing to be sure is that the oil is designed for two-stroke engines.
To run a new saw in the first three fuel tank fillings, add 20% more oil. In this case, instead of a ratio of 1:50, it will be 1:42, and the ratio of 1:40 turns into 1:33. A liter of gasoline will require 24 or 33 ml of oil, respectively. The second running-in measures are not carried out with the new saw. Manufacturers advise to work only at the highest speed at all times. After running in the tool, the usual proportions of 1:50 or 1:40 are used. In some cases, the manufacturer of the equipment indicates other ratios, for example, 1:25 or 1:32, they must be observed.
Dirty gasoline
Some owners of chainsaws are sure that if the tool works in conditions of constant dust (there is even an air compensator in the carburetor in case of a clogged air filter), it means that it is capable of swallowing gasoline with pieces of rust, and working with small pieces of metal will go to lubricate the chain, so?
What gasoline and oil is better to choose for refueling a Stihl chainsaw
The durability and reliability of the chainsaw is determined not only by the conditions of its operation, but also by the quality of the fuel used for refueling. In addition to the special conditions of use, when grinding parts in the first few refuelings, attention must also be paid to the quality of the fuel mixture.
Professional Chainsaws Stihl Equipped with two-stroke engines, requiring high-quality fuel. a metered mixture of high-octane gasoline and oil, designed for engine operation at high speeds. The correct choice of gasoline and oil for the Stihl chainsaw is the key to a long and successful operation of this unit.
Octane number
This is where the fun begins. Can I refuel a chainsaw 95 with gasoline? In all operating instructions for chainsaws, manufacturers indicate in bold type: “Do not use gasoline with an octane rating above 92 for preparing the fuel mixture.” It is understandable, but, apparently, not to everyone, tk. Once from time to time, they bring chainsaws with a burnt-out cylinder to service centers!
Let’s figure out which gasoline is worth pouring into a chainsaw and which is not! For all two-stroke engines dust, you need to use 92 gasoline, the tool is designed for it. Filling 95 gasoline, detonation will begin in the engine (push of the piston into the opposite direction), something like a micro blow, which will occur at almost every revolution of the crankshaft. About 98 gasoline, I think everything is clear, the effect will be even stronger, and it will already be mini blows.
Dirty gasoline
Some owners of chainsaws are sure that if the tool works in conditions of constant dust (there is even an air compensator in the carburetor in case of a clogged air filter), it means that it is capable of swallowing gasoline with pieces of rust, and working with small pieces of metal will go to lubricate the chain, so?
Octane number
This is where the fun begins. Can I refuel a chainsaw 95 with gasoline? In all operating instructions for chainsaws, manufacturers indicate in bold type: “Do not use gasoline with an octane rating above 92 for preparing the fuel mixture.” It is understandable, but, apparently, not to everyone, tk. Once from time to time, they bring chainsaws with a burnt-out cylinder to service centers!
Let’s figure out which gasoline is worth pouring into a chainsaw and which is not! For all two-stroke engines dust, you need to use 92 gasoline, this is what the tool is designed for. Filling 95 gasoline, detonation will begin in the engine (push of the piston into the opposite direction), something like a micro blow, which will occur at almost every revolution of the crankshaft. About 98 gasoline, I think everything is clear, the effect will be even stronger, and it will already be mini blows.
What gasoline to pour into a chainsaw
Everywhere and everywhere they write and discuss issues related to the choice of oil for a chainsaw, someone recommends only the original one, and someone “everything is fine” and on a regular Lukoil 2T! They also raise a lot of questions about mixing gasoline with oil. the process of preparing a fuel mixture for a chainsaw has any more or less human resource. But, no one ever raises the importance of the issue of using gasoline in a chainsaw! Why? After all, all technicians and engineers know how the use of high-octane gasoline affects engines designed to operate on low-octane ones! Chainsaw is no exception!
How much gasoline is stored
During long-term storage, gasoline evaporates (regardless of the brand), a sediment falls at the bottom, it loses its properties, in other words, it deteriorates. It is worth knowing that the gasoline itself does NOT ignite as much as its vapor. Therefore, if there is a canister of gasoline in the garage since last year, then think whether it is worth it? Better leave it to light the BBQ fire.
The use of “stale” gasoline for a chainsaw entails many problems:
- Difficult start;
- Decrease in maximum power;
- Increased wear of chainsaw engine parts.
It is worth remembering that the prepared fuel mixture (gasoline with oil) is stored for no more than a month, after this time it should be disposed of. Using old mixture increases wear on the engine parts of the chainsaw. do not forget about it!
Summing up
In order for the chainsaw to serve for many years, never fill it with old gasoline, and you do not need to use grade 95 and even more than 98 gasoline to prepare the fuel mixture, only 92. Also, do not forget about the purity of gasoline. no odens!
I hope now you are NOT wondering which gasoline for a chainsaw is suitable and which is not very.
Under the brand
For modern brands, for example, Husqvarna, Partner, Makita, Echo, Stihl, AI-92 gasoline is suitable. Today, just a colossal number of people complain about the premature failure of chainsaws due to poor gasoline. Therefore, some experts recommend pouring AI-95 into such chainsaws. At the same time, a good AI-95 can “burn the piston”, and again a certain number of people found a compromise and Mix AI-95 with AI-92. In general, it all depends on the quality of gasoline and ultimately you decide.
For domestic instruments, Ural, Druzhba, it is recommended to take AI-80 gasoline. It is very important that fuel consumption is minimal.
Good to know
Procurement of fuel needs to be done, count on 3 refueling. After all, storing a large volume of fuel can negatively affect the operation of the chainsaw. The mixture can behave differently, as many factors will affect it. As a result, your household unit may get serious damage, which will entail financial costs.
Sometimes even a container can affect water quality. Plastic and glass react with gasoline, which can create a flash fire hazard.
The finished liquid cannot be stored for more than a month, because the oxidation process takes place. After working with the chainsaw, you need to use up the remaining fuel, turn off the engine and remove the remaining fuel mixture.
Fuel mixture
To properly prepare fuel, you need a list of additional tools:
- A plastic or metal container for diluting the substance;
- Measuring bottle for gasoline;
- Dispenser;
- Syringe;
- Chainsaw tank filling can.
Some manufacturers, such as Stihl, immediately make measuring containers for more convenient measurement of the fuel mixture.
Different manufacturers produce oils in different shades. HP produces a red liquid. Green oil is a premium synthetic segment. For your Husqvarna chainsaw, you need to use the correct oil. It is of high value, good quality, and is green or blue.
To mix the components, you will need the aforementioned additional accessories. Also on sale you can find special canisters with two holes for oil and gasoline. Everything is very simple here, pour in the ingredients, tighten the lid tightly and mix by tilting the container. Glass and plastic bottles can be used.
No water or dust must get into the fuel mixture.
What gasoline should be poured into a chainsaw
Hello! Councils to see you again, dear readers and subscribers of the blog of Andrey PLA. Everyone who has a chainsaw at home knows exactly what kind of gasoline and how to fill it. But so, who only wants to buy such a unit, the article will seem entertaining.
The chainsaw is one of the most convenient and versatile household appliances. Prepare the fuel mixture before use. But for the unit to work correctly, you must follow all the manufacturer’s recommendations. Each model is individual, so which gasoline to fill in the chainsaw?
Helpful hints:
- Sometimes it is better to pour a little oil than to regret it. If you give a little more oil than indicated in the instructions, then nothing terrible will happen. The formation of carbon deposits is possible in cases of large amounts of oil and in case of non-observance of the indicated proportions;
- It is better to store the finished mixture for a month and no more, because for some reason it will lose its properties;
- Correct shutdown. It is imperative to use or drain the contents of the tank, so you can extend the work of rubber and plastic seals;
- You should NOT use oil designed for mopeds for your chainsaw, because it is designed for low rpm.
The correct operation of your equipment fully depends on you. Firstly, DO NOT disdain the manufacturers’ signs or, in extreme cases, the instructions on the oil packaging. This will help avoid unpleasant situations. The neighbor does not always know what is the best way to do it. The cheapness of oil and gasoline is not an indicator of high quality, because a breakdown of a tool can be much more expensive (about 80% of the cost of a chainsaw) than the money saved on the fuel mixture.
Fuel consumption
One of the most fundamental questions that arises in the owners of the saw tool, because everyone wants to know what he can count on.
The volume of almost all tanks is approximately 500 ml. If the power of the chainsaw is 2 kW, then the consumption of the fuel mixture will be approximately 1.2 liters during operation. Simply put, such a tool will be able to work at maximum speed for half an hour without interruption. If the chainsaw is not so powerful, then the volume of the tank will be smaller. So users can independently control fuel consumption.
Over time, the user will learn to service his tool without any help. The main task will be to preserve the economic unit in good, working condition, using high-quality fuel mixtures. Observe safety rules when preparing flammable water. This will help preserve the instrument, and also not harm yourself and the environment.
Making the mixture: important proportions
When using a two-stroke engine, clean fuel is purchased separately and mixed with oil, often in proportions of 1:50. It is structurally impossible to install an oil pump in such an engine, therefore, pouring pure gasoline into the chainsaw is strictly prohibited! The proportions, quantity and some brands are indicated by the manufacturer in the instruction manual.
Important points in the cooking process:
- Domestic chainsaws work with oil M8-B, M-12TPU, M8-B, TP, MGD-14M. In some cases, you can use foreign options;
- Proportions: 2.5 liters of FI-80 gasoline per 100 grams of oil;
- Foreign models are distinguished by minimal fuel consumption. They work on foreign oils, and their proportions become 1:40 or 1:50.
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