How much oil to dilute per liter of gasoline trimmer
Oil selection and fuel mixture for lawn mowers
So, have you finally become the owner of a petrol lawn mower or lawn mower? And your imagination is already creating images of how you courageously cope with the dense grass. However, the dream of a “perfect lawn” remains a dream, when the question involuntarily arises: what oil to use and what are the proportions of mixing it with gasoline?
You can find a lot of information on the correct preparation of the fuel mixture on the Internet. This topic is actively discussed on forums and other thematic resources. But, despite such an active discussion, there are many inconsistencies that have to be dealt with.
It doesn’t really matter what technique is used, it could be a lawn mower. lawn mower or chain saw. they are united by one. two-stroke gasoline engine. Unlike the 4T, it does not have an oil sump. To feed it, it is required to prepare a special fuel mixture consisting of gasoline and oil. The resulting liquid is fed directly to the engine (carburetor). During use, all actively working parts are thoroughly lubricated, contributing to trouble-free operation under all operating conditions.
Lawn Mower Engine Oil
Depending on the chemical composition, lubricants are divided into the following main groups:
Mineral. They are made on the basis of oils obtained from petroleum distillates. They are characterized by high viscosity and require frequent replacement. The material is intended for low-power appliances with an air-cooled system. Recommended for warm weather.
Semi-synthetic. They represent a kind of “golden mean”. They are based on a mixture of mineral and synthetic oils. A similar lubricant can be used in 2T and 4T engines, gardening and other equipment with air and liquid cooling.
Synthetic. They are made on the basis of special synthetic components containing esters. They are characterized by low viscosity and long service life. They can be used all year round, regardless of temperature conditions. Ideal for challenging heavy duty equipment with constant variable performance.
Any two-stroke oil, due to its 20% solvent composition, mixes well with fuel and has the feature of complete combustion. Their second characteristic feature is the color, which can be green, red or blue. Of course, this does not mean that some lubricant is better, but some worse. This is done solely so that it is convenient for the user to distinguish oil from pure gasoline.
Classification of engine oils:
The required parameters of oils for 2T engines are prescribed in the requirements of API TC JASO FC, API TC JASO FC ISO GD and API TC JASO FC E-GC. The most widely used classification systems are API. Based on this, 2T engine oils are divided into 4 large groups:
TA. suitable for household appliances with an air cooling system and an engine volume of no more than 50 cm3.
TB. used for more powerful equipment with an air cooling system and a motor volume of 50.200 cm3.
TC. used in technology with high demands for oil quality. It is a high quality lubricant for 50.200 cc two-stroke engines. Great for lawn mowers, lawn mowers, trimmers, chain saws and other garden equipment.
TD. for outboard boat motors with liquid cooling.
Most suitable material for 2T motors of API-TB and API-TC class. However, it is necessary to refer directly to the product passport, where the manufacturer indicates the brand of engine oil recommended for its equipment.
Important! For lawn mowers, lawn mowers and other 2T gardening devices, a special engine oil is provided for two-stroke engines with an air cooling system and marked “for gardening equipment”. Do not use lubricant for 2T engines with liquid cooling system. Also not recommended oil for outboard engines, motorcycles and other equipment.
Oil to gasoline ratio for lawn mowers: why accuracy is so important?
Basic Operations STIHL Grass Trimmer | How To Mix Oil & Gas, Start & Run Engine, Re-Spool String Etc
All of us in childhood loved to “chew”, so the process of preparing a fuel mixture is not only simple, but also interesting. First of all, it is worth considering the fact that the proportions of the mixture may be different. This depends on engine configuration, oil markings and manufacturer recommendations. The fact is that with an insufficient amount of lubrication, the cylinder and piston heat up, which leads to shallow scuffing of all rubbing surfaces and, consequently, to the failure of the cylinder. piston group. Well, in the case of its excess, on the contrary, we get coking of the piston ring and the formation of a large amount of carbon deposits.
And even despite the fact that there is a generally accepted mixing ratio of 2% (for every liter of gasoline, 20 ml of lubricant). The proportions in the mixture are still recommended to be kept exactly.
How much to pour oil into gasoline for lawn mowers?
Everything is quite simple, subject to the correct balance, the engine runs at full capacity, all parts are thoroughly lubricated and do not wear out. As a result, we get a confidently working technique that will last more than one season.
To know how much oil to add to your lawn mower, you need to familiarize yourself with the performance of the product. Proportional ratios can be presented as follows: 1:25, 1:40 and 1:50, which means 1 part of oil for 25, 40 or 50 parts of gasoline.
1 liter of gasoline = 1000 ml
To determine the required amount of oil for a ratio of 1:25, you need 1000/25 and we will get a ratio of 40 ml.
We carry out the same actions for the ratio 1:40 and 1:50:
1:40 (for 1 liter of gasoline 25 ml of oil)
1:50 (for 1 liter of gasoline 20 ml of oil)
To ensure the correct proportion of lawn mower oil, it is recommended to use a special measuring container (not plastic). Eliminate the possibility of dirt and water getting into the fuel mixture. this may affect its quality. It is better to start preparing the mixture with gasoline. Pour it up to the required mark, then add oil. A couple of tilts of the container are enough for mixing. The liquid quickly combines and acquires a uniform hue, which, depending on the structure of the oil, can be red, green, blue or other. After that, a properly prepared mixture is poured into the equipment fuel tank.
Before using the equipment, make sure that the tank cap is tightly closed. If you have more fuel, then the remainder can be stored in a special canister or mixing container (no more than 14 days). It is recommended to drain the unused fuel.
Important! Be sure to follow the safety instructions. Mix fluids outdoors to prevent corrosive gasoline fumes from accumulating indoors. Wear gloves and long sleeves. Do not smoke or set anything on fire.
RON 92 gasoline is considered the most popular type of fuel for two-stroke engines. Due to its relatively low cost, it is extremely rarely falsified. Therefore, not one hundred percent, but you can be sure of its quality. It is also permissible to use AI-95 fuel.
As for the storage of fuel, its period should not exceed 3 months. Over time, gasoline loses its properties, the resin becomes higher and a polymerization process occurs, which adversely affects the combustion chamber. The fuel mixture for lawn mowers prepared from low-quality materials settles in the form of carbon deposits, as a result of which the main components and systems of the engine suffer.
Recommendations for use and storage
The fuel is ready, poured into the fuel tank, the first spurt and the long-awaited start. However, if you want the equipment to work as long as possible, it is recommended to run it in for the first time. To avoid overheating of the engine, it is recommended to adhere to the average load. After the main elements of the system have been thoroughly lubricated, the load can be increased.
Certain rules should also be followed when preparing the braid for off-season storage:
Drain the remaining fuel from the fuel tank and carry out the final run until the fuel is completely depleted. Then, pause the work and make sure that the engine is completely cool.
Unscrew the spark plug carefully and add about 5 ml of lubricant. Pull the starter handle slowly to distribute the oil evenly inside the engine. Then, return the candle to its original state. Store equipment in a cool dry place.
Fuel mixture: the proportion of oil and gasoline for the chainsaw
The chainsaw engine is the heart of the tool, so it is very important to use a properly prepared fuel mixture.
The fuel mixture for a chainsaw is prepared from two components. oil and gasoline. Chainsaws are equipped with two-stroke engines, so oil is not added to the lubrication system (like in a four-stroke engine), but directly to gasoline. At the same time, it is very important to observe the correct proportions of ingredients, of course, in no case try to work on pure gasoline, because in this way you will very quickly “kill” the chainsaw.
If we talk about what kind of gasoline to pour into the chainsaw, then it will be optimal to use fuel with an octane rating of A-95, in this case the savings on fuel can turn out to be deplorable. Often European manufacturers indicate that it is possible to use A-90 or A-92 gasoline, but in post-Soviet countries the quality of gasoline is inferior to that of Europe, so in our realities it is better to use better quality gasoline.
As for the proportion of the petrol-oil mixture itself, everything is simple here: you must follow the instructions for the tool. All manufacturers of chainsaws indicate the required ratio in the operating manual or in the passport of the tool, in addition, the proportions for refueling the chainsaw may differ depending on the model of the chain saw. As a rule, the proportion of oil and gasoline to a chainsaw of famous manufacturers is a ratio of 1:40 or 1:50, which means 1 part of oil for, for example, 40 parts of gasoline. Now arithmetic 1 liter of gasoline = 1000 ml of gasoline, divide by 40 and we get 25 ml of oil. If you follow the same steps to a 1:50 ratio, you get 20 ml of oil per 1 liter of gasoline. As for budget chainsaws made in China, the situation is slightly different. The ratio of gasoline to chainsaw oil made in China 1:25, that is, divide 1000 ml of gasoline by 25, we get 40 ml of oil. The thing is that in branded chainsaws, a solid assembly and the distance between pistons and cylinders in the engine is much less than that of Chinese chainsaws, therefore, the required amount of oil differs almost twice.
In order to measure the correct amount of oil, use a conventional medical syringe of sufficient volume.
Another subtlety. first fill the dry gasoline can with gasoline and then oil. The procedure, on the contrary, is fraught with a low quality fuel mixture, because the oil is more dense, it will stick to the bottom of the canister. what a good mixing here.
Be sure to prepare the fuel mixture in a canister and pour ready-made special fuel into the gas tank! Never cook or mix directly in the fuel tank of your chainsaw!
If you figured out the question of how to breed gasoline for a chainsaw, then on storage conditions and shelf life of the fuel mixture it is worth saying a few words. It is best and easiest to prepare a petrol-oil mixture for 1 liter of gasoline, it is recommended to do this immediately before working with the tool. Chainsaw fuel tanks have a volume of 0.3 to 1 liter. In the conditions of domestic use, the entire volume of the prepared combustible mixture is rarely used in one session, so the remainder can be saved until the next session. It is necessary to store the fuel mixture in a special canister for gasoline, in a dry, dark place. It is optimal to count that the shelf life of the finished mixture will be 7-10 days. The fact is that the oil on the market now is not synthetic, but organic, that is, natural. After 10 days, all lubricating properties are lost, gasoline simply “eats up” the oil. Naturally, it is no longer possible to use such fuel, this can cause breakdown and failure of the chainsaw.
At the end of the work, it is necessary to drain the fuel mixture, start the chainsaw, the tool will stall (so that the saw has a dry carburetor) and now you can leave it until the next operation session.
Unsuitable fuel mixture must be disposed of.
Why buy trimmers?
Comparing with similar mechanisms, they give preference to lawn mowers when choosing according to the following functional indicators:
secrets of 2 stroke engines oil x gas mixture
- Mobility and low weight of the unit, allowing it to be carried over distances, used in hard-to-reach places for mowing.
- Versatility. the lawn mower is equipped with a unit for changing working elements directly during the operation of the unit.
- Constructive simplicity, allowing long-term use of the braid without frequent adjustments.
These other positive characteristics give buyers confidence that they are making the right choice when purchasing a trimmer.
Ratio of gasoline and trimmer oil
Algorithm of actions
Fuel quality increases with proper mixing of the mixture components. The question arises before the mowing machine, how to breed, in what sequence. When mixing the components, pay attention to whether the containers are cleanly washed. A tiny slurry can stall the fuel supply to the carburetor. The fuel tank should be filled from a special container with a filter device.
The procedure is as follows. Half of the available gasoline is mixed with the volume of the specified amount of lubricant. This is followed by the mixing process.
When the components acquire a homogeneous consistency, 50% of the remaining fuel is poured into the partially diluted gasoline. This is how it is recommended to dilute the trimmer fuel.
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Which oil to choose
For effective trimmer operation, it is necessary to select oil for two-stroke engines. This is due to the lack of an oil sump in such a device. Depending on the chemical composition of the oil, the following classification is distinguished:
- mineral. based on petroleum distillate, suitable for low-power equipment and with an air type of cooling, but requires frequent replacement and can only be used in good weather during the warm season;
- semi-synthetic. suitable for garden equipment with air and liquid cooling;
- synthetic. based on esters, do not require frequent replacement and can be used at any time of the year.
Oil for 2-stroke engines is characterized by good solubility and complete combustion feature. It is recommended to use a lubricant for the trimmer that is suitable for air-cooled units. Most often, it is indicated on the packaging that the oil is intended for gardening equipment and is marked TA, TB or TC. over, the last of them is the most preferable.
Lawn mower manufacturers often produce the right oil, so you can make your choice easier if you choose the right brand fluid.
And now about how to mix the components correctly. However, it would be more logical to start with an analysis of common, but absolutely unacceptable mistakes that many owners of this mowing unit “sin” with. The following actions are considered as mixing errors.
- Adding oil to the fuel already poured into the mowers’ gas tank. In this way, a homogeneous fuel mixture cannot be obtained. Perhaps it will work, if only then shake the trimmer for a long time. But it is unlikely that someone will do this, given the severity of the unit.
- First pour oil into a mixing container, and then add gasoline to it. Gasoline has a lower density than oil, so if it is poured into 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 it will take much more energy than if it were done the other way around. pour oil into the poured gasoline.
- Ignoring accurate measuring instruments for taking the required quantities 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 drinking water bottles for preparation of the fuel mixture. Such a container is made of too thin polyethylene, which can dissolve with gasoline.
Considering all of the above, we recommend using the following rules when mixing a fuel mixture for two-stroke trimmer engines.
- Use only clean containers made of metal or special plastic for storage of gasoline, oil, ready-made fuel mixture and its preparation.
- Use a watering can to fill gasoline into a dilution container to avoid spilling, and to add oil. a measuring container with volume risks or a medical syringe for 5 and 10 ml.
- First, pour gasoline into the canister for preparing the fuel mixture, and then oil.
- To dilute the mixture, first pour only half of the planned volume of gasoline into the container.
- Next, add to the gasoline the entire amount of oil required to prepare the mixture.
- Mix the contents of the dilution container thoroughly. It is best to stir by making circular movements with a tightly closed container. Do not stir the 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 into with the ingredients of the mixture, how clean it is.
- Add the rest of the gasoline to the mixed mixture and mix thoroughly again.
- You can fill the fuel tank of the lawn mowers with the prepared mixture.
It must be borne in mind that the ready-made fuel mixture should not be stored for more than 14 days, as it loses its properties, stratifies and evaporates, which leads to changes in proportions, and therefore a deterioration in trimmer performance.
Consequences of violation of the ratio
The service life of the motor scooter depends on how accurately you follow the manufacturer’s recommended proportions of the oil-gasoline mixture. 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 to lubricate the moving and rubbing parts and surfaces of various parts in the cylinder. If it suddenly turns out that there is not enough oil, and somewhere it will not be enough at all, the parts that touch dry will begin to damage each other. As a result, scuffs, scratches and chips are formed, which will certainly lead to complete or partial engine failure (for example, it can 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 turning over time into solid particles. coke, slag and the like. As you might guess, this also leads to engine failure. The most important thing is that you must not allow. even a single violation of the proportion towards the lack of oil. It is better to pour a little oil 10 times than not to top up just 1 time. It often happens that this time is quite enough to break the engine.
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 lawn mowers, you can present your claims to him, and not to a third-party source. If there is no instruction in the passport, and even more so if there is no passport, then we recommend that you look for another trimmer model from a more reliable seller.
For all other cases, when you have a lawn mower model in your hands and there is no way to find out its technical features, there are standard proportions of the most likely fuel mixture components for a two-stroke engine. Basically, these units use AI-92 gasoline and a special synthetic oil, which contains a solvent for better mixing with fuel. Such oil evaporates slowly and has the ability to completely burn out in the cylinder, leaving no carbon deposits.
The standard ratio of synthetic oil to gasoline is 1: 50. This means that 5 liters of gasoline requires 100 ml of oil, and in accordance with this oil consumption per 1 liter of gasoline is 20 ml. Knowing the amount of oil required to dilute 1 liter of fuel, you can easily calculate any rates when preparing fuel for the trimmer. When using mineral oils, a ratio of 1: 40 is most often the standard ratio. Therefore, 1 liter of fuel will require 25 ml of such oil, and for a 5 liter canister. 125 ml.
When lawn mowers are working, a person with little experience in operating such equipment will not be difficult to determine and correct the actual amount of oil required for a particular model. You should only pay attention to the exhaust gases (their color, odor toxicity), cycle stability, engine heating and developed power. details about the consequences of incorrect mixing proportions of gasoline and oil can be expected in another section of the article. There are options for lawn mowers running on AI-95 gasoline. This should also be considered.
If the manufacturer recommends fuel with such an octane number, then the requirements must be followed so as not to reduce the operating resource of the equipment.
Gasoline to lawn mower oil ratio
- Standard proportions
- Mixing rules
- Consequences of violation of the ratio
- How to choose for lawn mowers?
lawn mowers are a fairly common technique for combating weeds in summer cottages, in household, road and housing and communal services. These devices have two more names. trimmer and lawn mower. These units differ in their engines. The more expensive ones have four-stroke engines, all the others have two-stroke engines. Of course, the latter are the most popular among the population, since they are simpler in design, and lighter in weight, and much cheaper than their four-stroke competitors. However, two-stroke models are inconvenient in that the fuel mixture for them must be prepared by hand, maintaining 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 corresponding substances. Let’s consider the issue of the correct refueling of two-stroke lawn mowers, since it depends on how effective and long the operation of such a unit will be.
How to choose for lawn mowers?
For two-stroke engines, lawn mowers use AI-92 or AI-95 gasoline. Most often. the first of the named. There is always information about this in the technical data sheet of the product. If, for some reason, it is not known exactly on what gasoline the trimmer should work, you can pick it up by testing both brands of gasoline in action. Global changes in the engine will not happen from this, and it is quite possible to determine what kind of gasoline this or that model of the unit “likes” more, according to some factors. This will be shown by the developed power, and throttle response, and engine heating, as well as its stable operation at all speeds.
But it is much more difficult to determine the proportions of oil to a certain volume of gasoline. In this case, you need to know at least something about the manufacturer of the equipment. And already according to the standard proportions for this manufacturer, select the proportion for a specific model, taking into account the type of oil.
You can start selection even by country of origin.
For example, for Chinese low-power trimmers, two ratios are mainly used. 1: 25 or 1: 32. The first is for mineral oils, and the second is for synthetic oils. We have already talked about the choice of standard proportions for lawn mowers of European and American manufacturers in connection with the type of oil. According to the class of oils for household trimmers, it is necessary to use TB oil according to the API classification. For more powerful. vehicle class.
For information on the ratio of gasoline and oil needed for lawn mowers, see the next video.
Mixing oil with gasoline
All work with fuels and lubricants must be carried out in compliance with safety measures, namely:
- use of gloves to keep oil and gasoline particles out of the skin;
- mixing is carried out outdoors to prevent the accumulation of gasoline vapors;
- it is forbidden to work near open flames, heating devices or smoking.
In addition to safety measures, you should be careful with measuring containers and funnels. Everything must be clean. It is necessary to exclude any ingress of dust, debris, water into the finished fuel mixture. Otherwise, such a refueling will lead at least to clogging of the carburetor and other fuel supply elements.
A measuring cup is used for mixing. This can be a separate container with a measure or a special compartment on a bottle of oil. In any case, first, the amount of oil and gasoline is procured, taking into account the required proportions. Then the oil is poured into gasoline and mixed. The fluid should take on a uniform shade, depending on what color the lubricating fluid was. blue, red, green. The fuel mixture for the two-stroke internal combustion engine is ready.
You cannot mix the components directly in the gas tank of the equipment. Cooking takes place only in a separate container.
Oil selection for two-stroke internal combustion engines
For a two-stroke engine, you must purchase branded API-TB or API-TC oils. The instructions for the equipment or gasoline tool will necessarily indicate the recommended oil brand, which is also subdivided by viscosity and characteristics:
- mineral. for warm weather;
- semi-synthetic. mineral oils with improved qualities for all-season weather;
- synthetic. used in more severe times at low temperatures.
When purchasing oil, you need to be guided by how much mixture you need for technology. If you plan to use a lawn mower, then 1-2 liters are enough for the season. If it is a scooter or a boat motor, then the amount will be required much more. Based on the instructions, you can make the correct calculation of fuel in advance.
Why you need to mix gasoline with oil
When the parts are mated, they are lubricated, because the mixture consists not only of a combustible part, but of a lubricating component. This is why the use of clean fuels is not recommended. The engine will work, but in the absence of lubrication, the piston system will quickly fail, fail.
Thus, mixing gasoline with two-stroke oil is extremely necessary for the following reasons:
- increasing the service life of the internal combustion engine;
- elimination of the formation of scuffing elements of the piston group;
- prevention of jamming of mechanisms, engine parts during overheating;
- ensuring effective lubrication of rubbing parts;
- preventing all kinds of breakdowns during work.
Gasoline and oil proportions
There is no definite answer to the question of how much oil is required per liter of gasoline. For each gasoline two-stroke engine, taking into account the power and the period of use, its own proportion is provided. The operating instructions indicate indicators, while the ratio during the running-in and subsequent operation is different.
For example, for garden equipment. mowers (trimmers), chainsaws, the proportionality of constant operation is 1:50, running-in 1:40. The proportion of oil and gasoline for a boat motor is also individual: 1:25. running-in, 1:40. short period of work, 1:50. long-term operation. For tillers, cultivators, more oil is needed: 1:20. running-in, 1:30. continuous operation. Motorcycles, scooters will need even more oil. Here, the proportions during running-in will be 1:15, and in the future, a fuel mixture of 1:20 will be required.
The position that the more oil, the better or according to the principle “it will not get worse” is not relevant. Increased concentration will cause increased engine wear as a carbon deposit will form. The proportion must be accurate. For convenience, a two-stroke fuel mixing table is used. It contains indicators that allow you to determine the need for gasoline and oil for the preparation of a certain amount of fuel, taking into account the required proportion.
Features and principle of operation of a two-stroke engine
The advantages of a two-stroke internal combustion engine are ease of maintenance and repair. Its resource is higher than that of a four-stroke. Increased service life is achieved by reducing the number of piston movements.
The working cycle is completed completely in one revolution of the crankshaft. These are two strokes: compression and working stroke. Unlike a four-stroke ICE, there is no fuel mixture intake phase and no exhaust cycle. In a two-stroke, the process of fuel intake and exhaust gas exhaust is carried out during compression and expansion, i.e. in the course of one revolution of the crankshaft.
To prepare the fuel mixture, unleaded gasoline of grades not lower than AI-90 is used. Previously, AI-80 was used for this, which was cheaper than the others, but over time this type of gasoline left the fuel market. The AI-92 was the best option. You cannot use fuel that is not recommended by the manufacturer for a particular engine. It will incapacitate him quickly enough.
When refueling, storing gasoline, a number of recommendations must be taken into account. You must not pour gasoline into plastic containers, because:
- This can cause a fire, because plastic is a material that can generate static electricity when rubbed.
- Gasoline destroys plastic on contact. Its microparticles get into the fuel, which leads to the preparation of a poor-quality mixture for a two-stroke engine.
Preparation of the mixture
The fuel mass ratio must be accurate, calculated according to the manufacturer’s recommendations. It is not recommended to dilute “by eye”, because an insufficient amount of oil in the mixture and its excess will also lead to engine breakdown. For mixing, you need to choose the type of fuel, the brand of lubricant and how much oil you need to pour into gasoline.
Oil to gasoline ratio for two-stroke engines: features and recommendations
Nowadays, gas powered tools, motor boats, scooters and motorcycles are not a luxury. This is a common technique that everyone has. One of the distinguishing features of such equipment is a two-stroke gasoline engine.
Unlike four-stroke internal combustion engines, where the lubrication system is provided separately, two-stroke engines are refueled by mixing gasoline with oil. It is important to respect the proportions, the prohibition of refueling clean fuel without adding oil. Otherwise, a decrease in the service life of the engine, which will result in frequent breakdowns and short-term failure.