Gasoline For Trimmer Proportions

Gasoline For Trimmer Proportions

Benzokosa. a fairly common technique for combating weeds in summer cottages, in household plots, on the road, and in housing and communal services. These devices have two more names. trimmer and Lawn Mower. These units differ in their engines. The more expensive of them have four-stroke engines, all the rest are two-stroke. Of course, the latter are the most popular among the population, as it is both simpler in design and mass lighter and much cheaper than its four-stroke competitors. However, two-stroke models are inconvenient in that the fuel mixture for them must be prepared manually, withstanding a strict dosage between gasoline and oil. In four-stroke analogs, the mixing of these components occurs automatically, you only need to fill the gas tank and oil tank with the appropriate substances. Let’s look at the issue of the correctness of refueling just two-stroke motokos, as it depends on how efficient and long the operation of such an aggregate will be.

Standard proportions

First of all, it is necessary to take into account the information that the manufacturer recommends, since in the event of a failure of the brushcutter, you can make your claims to him, and not to an external source. If there is no instruction in the passport, and even more so if there is no passport, we recommend that you look for a different trimmer model from a more reliable seller.

For all other cases, when you had a model of a petrol brush in your hands and there is no way to find out its technical features, there are standard proportions of the most likely components of the fuel mixture for a two-stroke engine. Mostly for these units, AI-92 grade gasoline and special synthetic oil are used, which contains a solvent for better mixing with fuel. Such oil evaporates slowly and has the ability to completely burn in the cylinder without leaving a deposit.

The standard ratio of synthetic oil to gasoline is 1: 50. This means that for 5 liters of gasoline you need 100 ml of oil, and in accordance with this, the oil consumption per 1 liter of gasoline is 20 ml. Knowing the amount of oil needed to dilute 1 liter of fuel, you can easily calculate any norms when preparing fuel for the trimmer. When using mineral oils, the ratio of 1: 40 is most often standard. Therefore, 25 ml of such oil will be required per 1 liter of fuel, and 125 ml per 5-liter canister.

During the operation of the brushcutter, a person who has little experience in operating such equipment will easily find and correct the actual amount of oil needed for a particular model. It is only necessary to pay attention to exhaust gases (their color, odor toxicity), cycle stability, engine heating and developed power. details about what consequences from the wrong proportions of mixing gasoline and oil can be expected are covered in another section of the article. There are options for motokos running on AI-95 gasoline. This should also be considered.

If the manufacturer recommends a fuel with such an octane rating, then you must follow the requirements so as not to reduce the technical life of the equipment.

Mixing rules

And now about how to mix components correctly. However, it will be more logical to start by analyzing common, but absolutely unacceptable errors that many owners of this mowing unit “sin”. The following actions are considered to be errors in mixing the fuel mixture.

  • Adding oil to the fuel that has already been poured into the fuel tank. Similarly, a homogeneous fuel mixture cannot be obtained. Perhaps it will turn out, if only then shake the trimmer for a long time. But hardly anyone will do this, given the severity of the unit.
  • First pour oil into the mixing tank, and then add gasoline to it. Gasoline has a lower density than oil, so if it is poured to the oil, it will remain in the upper layer, that is, natural mixing will not occur. Of course, it will be possible to mix later, but energy will be required much more than if it were done the other way around. pour oil into the gasoline.
  • Ignoring accurate measuring instruments to take the required volumes of ingredients used. In other words, diluting the amount of oil or gasoline “by eye” is a bad habit when operating motor vehicles.
  • Take empty bottles from under drinking water to prepare the fuel mixture. Such containers are made from too thin polyethylene, which can dissolve with gasoline.

Given all of the above, we recommend using the following rules when mixing the fuel mixture for two-stroke trimmer engines.

  1. To use for storage of gasoline, oil, finished fuel mixture and its preparation only clean containers made of metal or special plastic.
  2. Use to pour gasoline into the dilution tank with a watering can to avoid spillage, and to add oil, use a measuring container with volume risks or a 5 and 10 ml medical syringe.
  3. First, pour gasoline into the canister to prepare the fuel mixture, and then oil.
  4. To dilute the mixture, only half of the planned volume of gasoline is first poured into the tank.
  5. Next, add to the gasoline the entire amount of oil required to prepare the mixture.
  6. Thoroughly mix the contents of the dilution tank. It is best to interfere by making circular movements with a tightly closed container. Do not mix fuel inside the canister with any foreign object, since it is not known what material this object is made of, what reaction it can enter with the ingredients of the mixture, how clean it is.
  7. The remainder of the gasoline is added to the mixed mixture and again thoroughly mixed.
  8. You can refuel the fuel tank of the brushcutter with the prepared mixture.

It must be borne in mind that the finished fuel mixture should not be stored for more than 14 days, as it loses its properties, delaminates and evaporates, which leads to changes in the proportions, and hence the deterioration of the trimmer.

The consequences of a violation of the ratio

The working life of the engine of the motocosa depends on how accurately you comply with the proportions of the oil-gasoline mixture recommended by the manufacturer. The fact is that the fuel mixture enters the cylinders in the form of gasoline-oil mist. And the task of the oil composition is the lubrication of moving and rubbing parts and surfaces of various parts located in the cylinder. If it suddenly turns out that the oil is not enough, and somewhere it will not be enough to get enough, the parts in contact with dryness will begin to damage each other. As a result, galling, scratches and chips are formed, which will necessarily lead to complete or partial unsuitability of the engine (for example, it may jam).

In the opposite case, when too much oil enters the engine, it does not have time to completely burn out, settling on the cylinder walls and eventually turning into solid particles. coke, slag and the like. As you might guess, this also leads to engine failure. The most important thing that should not be allowed. even a single violation of the proportions in the direction of lack of oil. It is better to pour a little oil 10 times than not to add only 1 time. It often happens that this time is quite enough to break the engine.

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How to choose for petrol scythes?

For two-stroke engines, motokos use AI-92 or AI-95 gasoline. Most often. the first of these. Information on this is necessarily available in the technical passport of the product. If for some reason it is not known exactly which gasoline the trimmer should work on, you can choose it by testing both brands of gasoline in action. There will be no global changes in the engine from this, but it is quite possible to determine which gasoline this or that model of the unit “loves” more. This will be shown by the developed power, and throttle response, and heating of the engine, as well as its stable operation at all speeds.

But with the proportions of oil to a certain volume of gasoline, it is much more difficult to determine. In this case, you need to know at least something about the manufacturer of the equipment. And already, according to standard proportions for this manufacturer, choose the proportion for a particular model taking into account the type of oil.

You can start the selection even in the country of production.

For instance, For Chinese low-power trimmers, two ratios are mainly used. 1: 25 or 1: 32. The first is for mineral, and the second is for synthetic oils. We have already talked about the choice of standard proportions for gas trimmers of European and American manufacturers in connection with the type of oil. In the oil class for household trimmers, you need to use TV oil according to the API classification. For more powerful. TS class.

About what ratio of gasoline and oil is necessary for a brushcutter, see the next video.

To mow grass in the country or on the field you will need gas trimmers. They work on gasoline, in contrast to electrical counterparts. Not many masters know how petrol and oil for trimmers, petrol and motocos are bred. Step-by-step instructions for preparing the fuel mixture in the trimmer will be useful not only to beginners, but also to specialists who may refuel chainsaws incorrectly.

What to choose oil for refueling in trimmer or types of lubricants

Trimmers and brush cutters are powered by two-stroke engines, which have a simplified design. Rarely, there are models of trimmers with 4-stroke engines that run on clean gasoline. The power units of the push-pull type do not have a compartment for pouring motor oil (oil sump), due to which the weight of the tool is reduced and their cost is reduced. If the rotating parts of the motor are not lubricated, then in the end they will quickly fail. To prevent this, the trimmer is not charged with pure gasoline, but with a mixture of oil. Which oil to dilute with gasoline for trimmer?

To begin with, we recall or find out what types of oils by chemical composition are produced:

  • Mineral liquids. designed for low power equipment with air cooling. This is the cheapest type of lubricant for motors.
  • Semi-synthetic substances. they are used for equipment that has air and water cooling
  • Synthetic. suitable for all types of motors with different types of cooling. They do not require frequent replacement, and this type of lubricant is several times more expensive than mineral and semi-synthetic

From the above it follows that for a trimmer, oil with any composition is suitable. mineral water, synthetics and semi-synthetics. Oils with different chemical compositions differ in price, so you should rely on the recommendations of the tool manufacturer when buying. The instructions provide recommended information on which types of oils are best used. If this is the TC-W3 standard, then it is not so important what composition the substance should have. In this case, mineral water, semi-synthetics and synthetics can be diluted with gasoline.

Choice of oil for brushcutters useful recommendations from professionals

If the instruction manual for the tool has been lost and there are difficulties in choosing the right oil, then it is recommended to stop your choice on the following two options:

  • Semi-synthetic. are cheaper than synthetics, but more expensive than mineral water. Suitable for equipment, both Russian-made and foreign. They have low smoke control parameters and adequately “take care” of the structural elements of the motor. They are made by distillation of petroleum products and hydrocarbons.
  • Synthetic. expensive types of lubricants that are suitable for all types of equipment. If you use synthetics for your trimmer, the engine of the instrument will work like a clock

When choosing and buying oils for dilution with gasoline, you may encounter the fact that some letter designations are indicated on the cans. These designations are an API classification that will be useful to find out who wants to fill in a tool with a suitable lubricant. Consider all types of oils according to the API classification for two-stroke engines:

  1. TA. is intended for air-cooled devices, the volume of which is up to 50 cm3. Such equipment includes mopeds, lawn mowers, trimmers and scythes. The optimal solution for the brushcutter and trimmer
  2. TB. is used for refueling engines of such units as mopeds, chainsaws, scooters and motorcycles. The volume of engines of such equipment is from 50 to 200 cm3. This type of oil is also suitable for trimmers.
  3. TC. designed for dilution with gasoline and pouring into motorcycles, snowmobiles and other types of land equipment
  4. TD. serves for refueling outboard motors, scooters and boats

Video: Gasoline For Trimmer Proportions


The API classification is an American standard that is used in Europe. However, when choosing, there are additional designations on the oil canisters for two-stroke engines, for example, FA, FB, FC, FD and others. This is a smoke emission oil classification developed by the Japanese JASO standard. If there are such designations on the selected oils for trimmers and chainsaws, then their decoding should be taken into account:

  • FA. are used in states where legislation stipulates minimum smoke emissions into the atmosphere. In operation, inconspicuous smoke fog is emitted.
  • FB. are intended for use in countries where there are strict restrictions on the emission of smoke into the atmosphere. Virtually no white smoke
  • FC. smoke is emitted into the atmosphere transparent, and not noticeable by humans
  • FD. smokeless oils for 2-stroke ICEs that do not emit smoke, but also have improved chemical properties. They are usually used for mixing with gasoline and for refueling boats, boats and yachts.

If the designations “self mix” and “pre mix” are present on the lubricant reservoir, then they mean self-mixing with gasoline (the first option that does not require shaking), and the need for forced dissolution (second option).

Knowing the classification of oils by their types, it will not be difficult to choose the best option for your brand of brushcutters. On the market you can find a variety of brands of oils for two-stroke engines, but it is better to pay special attention to such companies:

  • Stihl. produce mineral and synthetic, and semi-synthetic of this brand are rare
  • Shell Helix Ultra. Recommended by Specialists
  • Motul
  • Oleo-Mac
  • ECHO
  • Hammerflex
  • Lukoil. Russian oil, which costs 3 times cheaper than foreign counterparts, but at the same time has excellent quality indicators

Prices for products are not indicated, as their cost varies. There are many other brands, and if you still want to find the perfect lubricant for your trimmer for yourself, it is recommended that you watch the test in the video below.

From the video, we can conclude that it is not always useful to buy expensive oils, as they may turn out to be of unsatisfactory quality, as can be seen in a real example.

We deal with the choice of gasoline for AI-92 or AI-95 petrol scythes

How many people, so many opinions that apply not only to the choice of oil for the trimmer, but also gasoline. Similarly, in order not to make a mistake with the choice, it is recommended to use gasoline of the brand recommended by the manufacturer (indicated in the manual for the tool). However, not everything is so simple here, since at each gas station gasoline brands are only named the same, but they have completely different composition. You need to figure it out, and come to a single conclusion about which brand is better to pour gasoline into a two-stroke engine for your trimmer.

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Manufacturers recommend using A-92 gasoline for their equipment, and some models require the use of A-95 grade, which does not contain ethyl alcohol. It is not recommended to use gasoline of grade AI-90 or lower, since they will entail rapid wear of engine parts. When buying gasoline of the same brand, you cannot be 100% sure that it is true. The result is the following picture:

  1. The manufacturer recommends pouring fuel into the trimmer brand AI-92
  2. A summer resident uses only gasoline of this brand, but buys it at gas stations, where the price is lower or where you have to
  3. This negatively affects the internal details of the engine, since on one gas station it is really high-quality AI-92 gasoline, and on the second. in the best case, if it is AI-80, and not AI-76

As a result, the motor suffers, and after a couple of years of operation of the new trimmer, the need arises for its overhaul. In order not to have to analyze fuel quality or buy only expensive gasoline, it is recommended to refuel at only one gas station. At gas stations, gas is only poured into metal cans, not plastic.

There are manufacturers that produce special purified fuel for two-stroke engines. If you choose this option, then you do not need to choose the best gas station, brand of gasoline and control its shelf life.

Learning to breed gasoline with trimmer oil if underfilling or pouring oil

If you bought a trimmer, a brushcutter, a motorcycle saw, a chainsaw and other types of equipment, then you probably know that two-stroke engines are used as power units on them. These engines do not work on pure gasoline, like four-stroke ones, but on a mixture of gasoline with oil. In what proportion should gasoline be diluted with oil for the trimmer. this question is asked by every summer resident before preparing the tool for work. We will examine this issue in detail, since a dilution of gasoline with oil for the trimmer affects the tool life, and improper preparation of the mixture will lead to rapid engine wear. What is the danger of excess or insufficient oil in gasoline for the trimmer:

  • If gasoline is diluted with a large amount of oil (above the norm), this will lead not only to a large amount of smoke, but also to the formation of carbon deposits on the cylinder walls and a drop in power. This soot will cause piston wear, which will be diagnosed by reducing its performance
  • If gasoline does not contain enough oil to be trimmed, this is even more dangerous. After all, the working mechanisms of the engine will not be lubricated in sufficient quantities, which will ultimately lead to their rapid wear (there is a rapid destruction of the piston rings and jamming of the motor). With insufficient oil in gasoline poured into the trimmer, engine wear will occur tens of times faster

In order not to have to pay for errors at the cost of overhauling the engine or buying a new tool, it is necessary to pour fuel of the correct consistency into the tank from the first day. You can find out the ratio in the instructions for the tool, as models from different manufacturers can give different recommendations. Usually this ratio is as follows:

  • 1 to 25 or 1 liter of gasoline 40 grams of push-pull oil
  • 1 to 40 or 1 liter of gasoline 25-30 grams of lubricant
  • 1 to 50. this is added per gram of gasoline 20 grams of oil

The standard value is considered to be 1 to 50 (indicated on canisters with oil for two-stroke engines), but it is necessary to rely on it in the most extreme case, as manufacturers indicate the recommended value of the proportion, and if you do not observe it, the service life of the two-stroke motor is reduced.

In addition to maintaining proportions, you must also learn how to prepare the mixture. After all, the option of adding oil to the gas tank is categorically contraindicated, although some do. If you bought a trimmer or a brushcutter, then you will need supplies that you will use to prepare the mixture. Instructions for preparing the fuel mixture in the trimmer is as follows:

  1. Prepare gasoline and two-stroke oil, based on the above recommendations for choosing a lubricant and fuel
  2. Additionally, to prepare the mixture you need to take a container or container. Usually, a plastic bottle is used for this, the choice of which requires an appropriate approach. It should be clean inside. Using a container of milk of beer and other drinks is not recommended. The best option is a container for mineral water
  3. It is very important that the container has an integer value of the volume, that is, 1 or 2 liters, so that you do not have to calculate how much oil to pour into a bottle per 1.5 liters, 1.3 or 1.25 liters, because you can easily make a mistake
  4. You will also need a syringe, which is used as a measuring device for dispensing oil. For such purposes, a conventional medical syringe with 10 or more cubes is suitable. It is desirable that the syringe has an accurate measuring scale
  5. After preparing the necessary materials, you can begin to prepare

Instructions for preparing the fuel mixture in the brushcutter:

  1. First you need to fill the plastic container. The tank is filled with 2 fingers not enough to fit the oil
  2. The necessary amount of push-pull oil is drawn into the syringe, and poured into a bottle with the gasoline gained. You need to do just that, and not vice versa
  3. After adding lubricant to the bottle, it requires closing it tightly with a lid and stirring. However, keep in mind that stirring requires oils with the designation “pre mix”. If the container with oil has the designation “self mix”, then it is not necessary to shake the container, and after connecting the substances, you can fill them into the tool tank

After preparing the fuel mixture for the trimmer, it remains to refuel the tool, and proceed to work. How to properly fill trimmers, chainsaws, chainsaws and other types of motor vehicles, we will consider in detail.

How to pour finished fuel into a two-stroke engine

Many do not comply with some important recommendations for pouring fuel into the trimmer’s gas tank or gas mowers, which ultimately leads to unpleasant consequences. Consider the important recommendations on how to properly fill diluted fuel from gasoline and oil in a Lawn Mower tank:

  1. Prepare a funnel or watering can. Despite the large diameter of the gas tank opening, very often when trying to get into it, a certain part of the fuel spills onto the tool body. If fuel gets on the tool, it can cause a fire when it is heated, so it is very important to use a funnel or watering can here.
  2. Before unscrewing the plug, the surface of the tank should be thoroughly cleaned, since contaminants can get inside, which will cause a quick clogging of the gas filter
  3. Fuel filling operations must be carried out in calm weather or in a secluded place to exclude the possibility of dust and small grains of sand getting into the tank
  4. Do not leave the tank hatch open for a long time, as not only small grains of sand and dust can get into it, but also insects
  5. Do not inhale gasoline vapors during pouring, as they are dangerous to humans. When working with a trimmer, the master must use safety glasses, earphones and a respirator
  6. Pour fuel into the tank to the mark. If you fill a full tank, then when screwing the cork, some will pour out. uneconomical use of fuel. In this case, it’s better to underfill than to pour
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Given these recommendations, you can significantly extend the life of the gasoline tool in question.

Recommendations for storing the finished fuel mixture for the trimmer

After refilling the trimmer, many put off the mixture left in the bottle until the next time. Sometimes this next time does not come soon, and stretches until the next year. It is impossible to store the finished mixture for so long, as oil decomposition occurs. After preparing the mixture, it must be used up for 1-2 weeks. In addition, it is also impossible to store the instrument for a long time with the fuel mixture poured into the tank, as the effect will be similar. To prevent unforeseen circumstances, it is recommended to consider the following recommendations for storing the finished mixture of gasoline with oil:

  1. Prepare the fuel mixture in an amount to be used. If you don’t know how much fuel you use, then it’s better to cook less
  2. If the fuel mixture remains in the trimmer tank (when the tool is hidden until the next season), then it must be completely consumed or drained
  3. Before adding the prepared mixture to the tank, you need to mix it thoroughly
  4. Store the finished mixture in a tightly tightened container, as well as in a place limited to sunlight

Subject to all recommendations, the life of the trimmer will be no less than indicated in the instructions. The use of high-quality consumables paired with the recommendations for the preparation of the mixture in the trimmer will entail a long and effective service of a gasoline tool.

Depending on the variety of trimmers, they can be filled with a fuel mixture or separately with gasoline and oil. Now there is a huge variety of types of motor oils that are suitable for various equipment, including garden. In order to choose the right fuel for a particular model of Lawn Mower, you need to know its technical features and understand the brands of gasoline, as well as liquid lubricants. All details on how to dilute gasoline with trimmer oil are in the material below.

Features of refueling motokos

Depending on the engine design, the scythes are divided into two-stroke and four-stroke. In the first case, the piston in the internal combustion engine makes 2 strokes in one working cycle, and in the second case. 4 strokes. Differences in the operating principle of the engine determine the different approaches to refueling the trimmer.

Refueling with two-stroke engine

In ordinary household models, a motokos uses, as a rule, a two-stroke engine. For the brushcutter does not need a very large power and agility, so it is quite suitable for the fulfillment of tasks. In addition, this engine is much cheaper and simpler, but it is fueled with a fuel mixture that consists of oil and gasoline. Such fuel is poured into the carburetor and fed into the cylinder in the form of oil-gasoline fog. Thus, the oil provides lubrication of all necessary parts, and during the operation of the engine burns out along with gasoline. However, the combustion of this mixture is accompanied by the release of a pungent odor and smoke, which increases the toxicity of exhaust gases.

Important! For such motokos it is necessary to use a special oil for two-stroke engines, which completely burns out without leaving a burn, and has low volatility. And so that it mixes well with gasoline, it contains 20% of the solvent.

Four-stroke engine refueling

Four-stroke engines are used in professional motokos models. They have great power and can work for a long time without a break and refueling. They are also used as fuel. gasoline and oil, but they are poured into different tanks. This means that the oil does not participate in the combustion process, so the exhaust gases are not so toxic.

On a note! Along with the best environmental performance and the ability to heat less, four-stroke engines of motokos are also more economical. They consume much less fuel. savings reach up to 50% in gasoline and up to 80% in oil.

Rules for choosing gasoline

Before buying fuel for your Lawn Mower, you need to read the manufacturer’s instructions. It indicates the grades and brands of fuel that can be used for a specific trimmer model. In general, when choosing gasoline, you need to focus on the A-92 brand. A-95 is also suitable for refueling Lawn Mower, although some experts do not recommend taking fuel with such an octane rating. This is due to the fact that at many gas stations, the composition of such gasoline includes various additives and solvents (for example, alcohol). It should be borne in mind that you can’t save money in this matter. in order to extend the life of the brushcutter, you should choose only high-quality fuel from trusted suppliers.

Oil Selection Rules

Motor oil, depending on the chemical composition, can be:

  • mineral. is made from petroleum distillates and is intended for low-power equipment with air cooling;
  • semi-synthetic. is a mixture of mineral and synthetic oils and is suitable for 2T and 4T, as well as for air and liquid cooling;
  • synthetic. made on the basis of esters and can be used in powerful technology, as well as for working in difficult climatic conditions.

Important! Oils for two-stroke and four-stroke engines differ in their ability to dissolve, burn and evaporate. At the same time, so that the liquid lubricant differs from gasoline, it is painted in different colors: blue, green, red.

Depending on the API classification, the following groups of oils for trim motors can be distinguished:

  • TA. for low-power equipment with an engine capacity of up to 50 cm³ and air cooling;
  • TV. for powerful equipment with an engine capacity of 50-200 cm³ and an air cooling system;
  • TS. for powerful two-stroke equipment (motor-scythes, chainsaws, lawn mowers, etc.) with an engine volume of 50-200 cm³;
  • TD. for boat engines with liquid cooling.

To choose the optimal oil for a particular trimmer model, it is better to take into account the recommendations indicated in the instructions. For motokos 2T API-TV and API-TC class oil is usually used.

On a note! In addition, for two-stroke engines there is a JASO classification, and for four-stroke engines, SAE30 is still used.

Leading manufacturers of garden equipment themselves develop and produce oils for their equipment. Such lubricant compositions most fully satisfy all the technical and operational characteristics of a specific series of trimmers. For example, for Stihl Lawn Mower FS 5 it is best to use Stihl HP or Stihl HP SUPER oil, for Husqvarna 143R, Husqvarna HP or Husqvarna LS oil is suitable. But for the Patriot brand, the usual mineral oil M-8B is also suitable.

Rules for the preparation of the fuel mixture

For many beginners who have bought a Lawn Mower, the issue of diluting gasoline with oil to prepare a gas mixture becomes a problem. After all, you need to know the proportions and very carefully adhere to them. The instructions for the product usually indicate in what proportion to dilute the components: 1:25 or 1:32, or 1:40, or 1:50. This means that for 1 part of the oil, you need to take 25, 32, 40 or 50 parts of gasoline and mix them.

Of course, it is inconvenient to measure in such categories, therefore it is better to determine how much oil is needed per liter of gasoline using simple mathematical calculations. To do this, divide 1 liter, which is 1000 ml, into a known proportion. The following mixing table is obtained.