Mixing ratio for “Stihl
The German family-owned company Stihl has production facilities in many countries around the world. The office is located in Waiblingen. Among the assortment produced for the needs of forestry, small mechanization means take pride of place.
Today the Stihl chainsaw has entered a liquid golden age:
The manufacturer has established a 1:50 dilution standard for the oil. The proposed proportion establishes the possibility of diluting in 50 parts of gasoline 1 the fate of the oil. Or in a ratio of 1:40.
The calculation is simple. We know that 1 liter of flammable liquid equals 1000 milliliters. Divide the value by 50, we get 20 milliliters of oil. Similarly, the algorithm determines its volume, recommended in a ratio of 1:40. Let’s make simple calculations, we get a value of 25 milliliters.
Preparation of a mixture of fuels and lubricants
In order to know exactly how to dilute gasoline when preparing a mixture for a chainsaw, it is best to pay attention to the information indicated by the manufacturer. Also, the most popular proportions for saws with power exceeding 1.5 kW is the use of oil 50 times less than gasoline. Although there are various exceptions to this rule. Chinese manufacturers are focused on a ratio of 1 to 25, while the well-known company Partner. at 1 to 40. Companies such as Husqvarna recommend using 25 milliliters of oil per 1 liter of gasoline on their devices. Stihl Chainsaws also work well on Mixed mix at this ratio.
Problems that can lead to a violation of the ratio of lubricant-combustible substances:
- Rapid wear of the surfaces of the saw parts, carrying out friction;
- Acceleration of bearing failure;
- Reduction of the resource of the mechanism;
- Reduced functionality of the device.
The mixture is best prepared before directly pouring it into the dust. But it is not recommended to store completely unburnt gasoline with oil in the tank for more than several days. Additives that are in the oil are quickly destroyed during such storage. It is better to drain the mixture from the tank, and to produce the residues at idle.
It is best to do the dilution in a special Canister that has different holes for each of the materials. Gasoline should be poured into one part of the container, while oil. into another. When the canister is tilted, the components are mixed and a high-quality correct mixture is obtained. It is possible to dilute gasoline in plastic or glass containers, but there is a risk that fire and even explosion may occur. But any plastic container can bend spontaneously, which can lead to accidental ingestion of the mixture on a chainsaw or a person’s hands.
It is imperative to dilute gasoline for a chainsaw in a container that is clean and dried from water. Do not allow any particles or liquids to enter the container. Before you dilute gasoline for a chainsaw, you need to wipe the container and check it carefully.
The table shows the proportions of oil and gasoline for a chainsaw (how much oil should be poured in milliliters per liter of gasoline):
Why do you need to dilute the lubricant
At the very beginning it is necessary to deal with the premise of fuel dilution. The mixture used for the chainsaw is diluted primarily to prolong the life of the owner. The instructions for it strictly prohibit operation without diluting gasoline.
The basis of the chainsaw engine is a piston internal combustion engine. It consists only of a cylinder, therefore it does not have additional systems for lubricating parts. The mixture enters it, settles, lubricates the piston rings and walls. In tools such as chainsaws, oil with gasoline Acts as a one-of-a-kind lubricating fluid. The mixture extends the life of the functioning of all parts.
In addition, it contains additives, which are beneficial for the operation of the engine. Possesses antioxidant, preservative and other properties, which are also useful for the engine and its parts.
For the Stihl saw, the manufacturer recommends using unleaded AI-92 or AI-95 gasoline. In addition, the company produces oils for fuel preparation for its tools. If you bought a Stihl chainsaw, how to dilute gasoline with oil? In the attached instructions it is recommended to use in a mixture of petrol and oil in a ratio of 1:50. This means that 20 ml of oil is added to each liter of gasoline and best of all from Stihl.
Do not violate the ratio, this will cause malfunction of the tool. Often, complete with the equipment, the manufacturer also attaches a special canister with applied divisions and two holes, into which the necessary ingredients are poured for mixing.
Proportion for chainsaw Friendship
For engines use fuel of low octane numbers. The unit shows the highest performance when filling the engine with AI-76 and AI-80 gasoline.
It is recommended to dilute gasoline and oil according to the following algorithm:
Take 2 clean containers, Moisture-dried with volume marks. Then the fuel is diluted with two-stroke oil in a ratio of 1:50. That is, the fuel is diluted with 20 milligrams of oil.
Proportions for Swedish Husqvarna chainsaws
Depending on what power is required to be obtained from the units, select the appropriate component dilution:
In one liter of fuel, 40 to 50 parts of oil are diluted. These are the ideal proportions of gasoline and oil.
Along the way, we inform you that only unleaded gasoline of the AI-92 or AI-95 brands is used. Leaded combustible product is considered a poor choice for internal combustion engines, as it shortens the engine’s service life.
The article discusses in detail how to dilute gasoline with chainsaw oil. When preparing the mixture, try to strictly observe all the proportions so as not to harm the technique. Do not forget to add 20% more oil than indicated in the instructions when running in a new tool and in hot weather.
Gasoline and oil for chainsaws. which is better
Often beginners ask, which one is better to take gasoline for their instrument? In order not to make a mistake in the choice, it is recommended to read the instructions for the tool. In the instructions, each manufacturer indicates the corresponding brand of fuel. If the manufacturer indicates that the octane number should not be lower than 95, then it is not recommended to pour 92 gasoline.
Motor oils for two-stroke engines are produced by the following manufacturers:
Usually, the ratio is indicated on the lubricant bottle, so it will be difficult even for beginners to get confused with the preparation of the fuel mixture. Under no pretext DO NOT use working off even as a chain lubricant. This will lead to the fact that soon it will be necessary to repair the tool.
Why you need to mix oil and gasoline
When using the saw, gasoline should always be mixed with oil. The reason for this is the design features of a two-stroke internal combustion engine. It does not have a dedicated lubrication system for parts (as in other GIS) and, accordingly, its cylinders with O-rings, crankshaft, bearings and connecting rods Must be lubricated directly in the process of obtaining fuel.
Basically, API-TB oil is used for chainsaws common in our country. API-TC can be used somewhat less often, but only in cases where information about this is indicated on the packaging by the manufacturer. It should also indicate how much oil needs to be added to the gasoline. For dusts with lower loads, API-TC class applies.
The above brands of oils are classified by the American Petroleum Institute. There is also another well-known Japanese company that also determines the power classes of lubricants. For chainsaws, in this case, it is recommended to use oils in gasoline brands JASO-FB and JASO FD.
It is important to note that it is categorically impossible to use oils used in four-stroke engines on two-stroke.
This is due to the fact that in the second case it is important that the lubricant completely burns out. This can be achieved by using a synthetic oil that emits less smoke and produces less combustion residues. Before diluting the liquid, you should always pay attention to the instructions for the chainsaw, which should indicate the types and brands of all consumables that need to be used on the device.
How to refuel your chainsaw? Look in:
Saw refueling algorithm
The gasoline / oil mixture is best prepared in a 2.5 liter plastic bottle if you have to refuel the tool frequently. If you need to prepare fuel for just a few fillings, then it is better to use a smaller container. It is imperative that you purchase measuring containers, this will allow you to maintain the exact proportions of both liquids. Most oil manufacturers offer such measuring devices.
Initially, fuel is poured into the container, and then oil is added. It is imperative to take into account that there must be enough space in the container to thoroughly mix the fuel mixture.
After preparation, it is recommended to store this mixture NOT more than 2 weeks. It is recommended to shake the mixture thoroughly with each refueling. If you are NOT sure that all the fuel will be used up, then it is better not to prepare it in large quantities.
The proportions of gasoline and oil for chainsaws: features of the preparation of the fuel mixture
The fact that it is prohibited to pour “clean” gasoline into chainsaws is warned by sellers of buyers at the time of purchasing the tool. Many buyers find out about this for the first time, wondering why it is necessary to dilute gasoline with oil. If you neglect this rule, then the consequences for the tool can be simply catastrophic. In most cases, even an overhaul of the engine will no longer be able to help. In the material We will find out what proportions of gasoline and oil should be for refueling a chainsaw, and also what may be the risk of non-compliance with this rule.
Quality components needed
Practice proves the influence of the quality of the prepared mixture, taking into account the necessary proportions, on the service life of the tool, power, productivity:
- It is not recommended to use components in which the shelf life has expired.
- Especially important for the constituent parts of gasoline and oil. do not use components derived from gas condensates, since the molecular structure contains suspensions and water harmful to internal combustion engines.
- Partial non-compliance of AI-92 with international standards. AI-95 grade is saturated with additives, dampening the detonation moments of the internal combustion engine.
The noted disadvantages limit in time the service life of hand-held chainsaws, the internal combustion engines of which operate on a complex consistency of the combustible mixture.
How to increase the life of your chainsaw?
The chainsaw will be technically sound on one condition:
Strictly adhere to and comply with the prescriptions for the selection of components for the formation of a combustible mixture consisting of gasoline and the recommended oil.
It is not allowed to use oils intended for motor vehicles to form a working product. This is strictly prohibited.
Why add oil
At the heart of any chainsaw is a two-stroke internal combustion engine. This is one of the simplest mechanisms, consisting of one cylinder, AND does not have a separate lubrication system. The technology is such that the lubricant must enter the cylinder along with the fuel mixture, settle there, and lubricate the cylinder walls, piston rings, etc. The simplicity of the design of the tool has many advantages, among which the main one is the ability to carry out repair work on the engine and component parts independently.
Diluting gasoline, which is poured into a chainsaw, is required in order to extend the life of the tool. It is imperative to dilute fuel with chainsaw oil, and if, for some reason, you forgot to do this, then the operation of the tool is absolutely contraindicated.
The ratio of gasoline to chainsaw oil
The proportions of oil and gasoline for refueling two-stroke engines of chainsaws of different brands is 40 to 1 or 50 to 1. This ratio is standard, which is used not only by beginners, but also by experienced sawflies. It is this ratio for preparing the fuel mixture that is close to ideal, and provides lubrication of the rubbing parts of the crank mechanism and the piston.
How much oil should be poured into gasoline in milliliters? Calculated per ml, the proportion of oil and gasoline 1 to 50 is 20 ml per 1 liter. To prepare the correct mixture, you should put 1 liter of gasoline in a plastic bottle and dilute it with 20 ml of oil. To correctly measure how much oil to pour, you should take a special measuring container and fill it to the appropriate mark. If you plan to immediately prepare 2 liters of fuel, then 40 ml of lubricant must be added to this amount of gasoline.
There are other ratios, which are offered by different manufacturers. These values of the ratios differ insignificantly, but if you subtracted other values in the passport for the instrument, then you need to adhere to them. A value of 1 in 50 or 40 is standardized. Pour 15 ml of oil into 1 liter of fuel in the summer, and in winter topping up at least 20-25 ml. Knowing the recipe for preparing the mixture, you should also figure out what kind of gasoline to pour into the chainsaw?
The ratio of the amount of oil and gasoline for the fuel mixture
The proportion of oil and gasoline for a chainsaw is usually made up according to two recipes:
- 50 servings of gasoline per serving of engine oil
- 40 servings of gasoline per serving of engine oil
If the chainsaw was recently purchased and has NOT yet been operated, then the fate of the lubricant is increased by a quarter. The same amount is poured into fuel when cutting at temperatures below 2 degrees.
It is NOT difficult to get such a mixture. Almost every modern saw is equipped with a special two-section container. Oil is poured into a smaller part of it, and gasoline is poured into a larger part. The lids of both parts are tightly twisted and the container is turned over, shaken thoroughly. This achieves a complete and homogeneous mixing of both components.
If there is such a special container, then you can use any gasoline-resistant plastic container with a one liter lid and a disposable syringe for 5-10 cubes. The gasoline tank must first be cleaned of various kinds of pollutants and water. After that, one liter of 92-95 gasoline is poured into it.
In parallel, 20 ml of oil is drawn into the syringe. If refueling is done in cold weather, then you need to take 24-30 ml. Gently pour it into a container with gasoline. It is tightly closed with a lid and shaken thoroughly until the components are completely mixed.
Even experienced lumberjacks do not always correctly mix the fuel mixture for a chainsaw if the work is done in a hurry.
The algorithm of actions is as follows:
- Prepare a plastic container containing 2.5 liters or less;
- There must be a measuring container. many use a conventional medical syringe;
- First, fuel is poured into the container, and then an accurately measured portion of oil;
- The finishing task is the meticulous dissolution of the oil product by actively shaking the consistency.
After that, the finished flammable product is recommended to be stored for 14 days. If more, the oil will settle to the bottom of the container. A new shake-up of consistency is required. People who are busy with business often forget about it.