Consequences of refueling with a mixture with incorrect proportions
When diluting fuels and lubricants, it is very important to observe the ratio recommended by the brushcutter manufacturer. If there is not enough oil, then scuffs will form on the piston and cylinder, which sooner or later will lead to a breakdown of the piston ring.
Important! In addition, as a result of friction, metal from the piston settles on the cylinder walls, and the engine can simply jam. This will require repair or replacement of the motor.
And with an excessive amount of oil, coking of the piston ring occurs, as well as the formation of carbon deposits on the piston, on the spark plug, etc. All this leads to heavy wear and tear of equipment and the need for constant cleaning.
Refueling a brushcutter with a two-stroke engine
In ordinary household models, the brushcutter, as a rule, uses a two-stroke engine. The lawn mower does not need a lot of power and agility, so it is quite suitable for the task at hand. In addition, this engine is much cheaper and simpler, but it is fueled with a mixture of oil and gasoline. Such fuel is poured into the carburetor and fed into the cylinder in the form of oil-gasoline mist. Thus, the oil provides lubrication of all the necessary parts, and in the process of engine operation, it 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 brushcutters, you need to use a special oil for two-stroke engines, which completely burns out without leaving a burn, and has a low evaporation rate. And so that it mixes well with gasoline, it contains 20% solvent.
Refueling a brushcutter with a four-stroke engine
Four-stroke engines are used in professional brushcutters. They have great power and can work for a long time without interruption and refueling. They also use gasoline and oil as fuel, but they are poured into different tanks. This means that the oil does not participate in the combustion process, therefore the exhaust gases are not so toxic.
On a note! Along with better environmental performance and the ability to heat less, the four-stroke brushcutter engines are also more economical. They consume much less fuel. savings up to 50% for gasoline and up to 80% for oil.
Fuel mixture preparation rules
For many newbies who bought a brushcutter, the issue of diluting gasoline with oil for preparing a gasoline mixture becomes a problem. After all, you need to know the proportions and adhere to them very scrupulously. The instructions for the product usually indicate in what ratio to dilute the components: 1:25 or 1:32, or 1:40, or 1:50. This means that for 1 part of oil, you need to take 25, 32, 40 or 50 parts of gasoline and mix them.
It is, of course, inconvenient to measure in such categories, therefore it is better to determine, by simple mathematical calculations, how much oil is needed per liter of gasoline. To do this, divide 1 liter, which is 1000 ml, by a known proportion. It turns out the following mixing table.
| Ratio | Gasoline (ml) | Oil (ml) |
| 1:25 | 1000 | 40 |
| 1:32 | 1000 | 32 |
| 1:40 | 1000 | 25 |
| 1:50 | 1000 | twenty |
Most often, mineral oils should be diluted in a ratio of 1:40, and synthetic grades 1:50. Whereas for budget Chinese brushcutters, the proportions are completely different. 1:32 or 1:25. This is due to the fact that in low-power models made in China, a different assembly is used, and the distance between the piston and the cylinder is much greater.
Advice! For measuring fuel, it is best to use a graduated measuring container. Even an ordinary syringe is suitable for this.
Further actions have the following sequence.
- First, you need to pour gasoline into the container (canister), and then add the required amount of oil. If you first pour out the oil, then due to the higher density it will settle on the walls of the container and mix poorly.
- The next step. the contents of the canister should be thoroughly mixed by means of circular movements of the closed container.
- After diluting to homogeneity, the fuel must be poured into the mower’s fuel tank.
Important! You should not immediately use the gas tank to prepare the mixture.
You can watch the video for more detailed and visual instructions.
How to properly dilute grass trimmer gasoline
Depending on the trimmer type, 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 gardening. To choose the right fuel for a particular brushcutter model, you need to know its technical features and understand the brands of gasoline, as well as liquid lubricants. All the details on how to dilute gasoline with grass trimmer oil are in the material below.
Gasoline selection rules
Before buying fuel for your brushcutter, you need to read the manufacturer’s instructions. It lists the fuels and grades that can be used for your particular grass trimmer model. In general, when choosing gasoline, you need to focus on the A-92 brand. A-95 is also suitable for refueling brushcutters, although some experts do not recommend taking fuel with such an octane number. This is due to the fact that at many gas stations in Russia, such gasoline contains various additives and solvents (for example, alcohol). It should be borne in mind that you cannot save in this matter. in order to extend the service life of the brushcutter, you should choose only high-quality fuel from trusted suppliers.
Features of refueling brushcutters
Depending on the design of the engine, brushcutters are divided into two-stroke and four-stroke. In the first case, the piston in an internal combustion engine makes 2 strokes in one working cycle, and in the second case, 4 strokes. Differences in the principle of operation of the engine also cause different approaches to refueling the grass trimmer.
Rules for pouring the mixture into different engines
All of the above is relevant for two-stroke engines. In the case of four-stroke engines, nothing needs to be diluted and mixed. gasoline is poured into the fuel tank, and oil into the crankcase. It is important to know that oil intended for a four-stroke engine or for a liquid cooling system cannot be added to a brushcutter with a two-stroke engine. Otherwise, the entire piston system will be disabled or severe overheating will occur.
Important! For the first filling of a four-stroke engine, no more than 90 ml of oil can be poured into a special tank.
How to refuel the grass trimmer
A ready-made mixture of gasoline and oil can be stored for no more than 3 months (pure gasoline is stored less). Dilute enough fuel for several uses of the grass trimmer. In general, prepare:
- gasoline and oil that is suitable for air-cooled two-stroke engines;
- metal canister and mixing container;
- respirator;
- gloves.
Adding oil to gasoline
- Pour 1 liter of gasoline into a container of suitable volume and add 1/2 of the required amount of oil.
- Stir gently while keeping a good distance from open flames.
- Add the remaining half of the oil to the fuel and stir again.
Grass trimmer filling process
General tips for refueling the grass trimmer with a 2- or 4-stroke engine:
- Place the fuel tank so that the lid is on top, then fill in the required amount of fuel.
- Do not overfill the fuel tank. This will lead to one of the problems: overflow into the intake manifold and fuel filter, fuel ignition or engine breakdown.
- Try to pour the mixture so that it does not spill. To do this, you can use a watering can.
- If you do spill fuel, wipe it up immediately. Dispose of the cleaning material, do not accumulate indoors. it is fire hazard.
- The start-up of the device should be started after the fuel canister has been removed at a distance of more than 10 m.
- If there was a long break between the use of the mower, be sure to drain the remaining old fuel.
Choosing a brand of gasoline for trimmers
It is necessary to select the brand of gasoline for mowers taking into account the manufacturer’s recommendations. If you do not follow them, then the motor will soon break down. Often RON 92 or 95 unleaded fuel is used to fill the grass trimmer tank.
Gasoline for fuel mixture
Filling the grass trimmer with AI-80 gasoline can lead to device breakdowns due to its low technical characteristics. Please note that after purchase, fuel can be stored for no more than 60 days, but it is better to reduce this period.
Polyethylene cans are not used for storage, since static electricity will be generated in contact with the inner walls. An accidental spark will cause an explosion. Although, there are special plastic canisters marked “flame”.
Gasoline for four-stroke engine
Devices with a four-stroke motor are more complex. Oil and gasoline are poured into different containers, from where they are then fed to the engine. For a mower with such a motor, you need AI-92 and AI-95 gasoline. It is better not to use fuel with a lower octane number, because this will lead to unstable engine operation. In addition, do not use a lubricant designed for two-stroke models.
How to choose for a lawn mower?
For two-stroke engines, brushcutters 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 grass 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 “loves” 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.
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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 petrol cutters of European and American manufacturers in connection with the type of oil. According to the class of oils for household trimmers, you need to use TV oil according to the API classification. For more powerful. class TS.
For information on the ratio of gasoline and oil needed for a lawn mower, see the next video.
How to Mix Petrol Oil for 2 Stroke Engine Whipper Snipper / Weed Whacker
A grass trimmer or lawn mower is a must-have tool in the household. over, its reliability, efficiency and long service life depend on many factors. For example, the quality of fuel. This means that you need to correctly select the oil for the grass trimmer, observe the proportions when adding to gasoline and the rules for refueling the device.
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. grass 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, 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 question of the correct refueling of two-stroke brushcutters, since it depends on how effective and long the operation of such a unit will be.
Standard proportions
First of all, it is necessary to take into account the information that the manufacturer recommends, since in case of failure of the brushcutter, 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 model of grass trimmer 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 rate when preparing fuel for your grass trimmer. When using mineral oils, the ratio of 1: 40 is most often the standard. Therefore, 1 liter of fuel will require 25 ml of such oil, and for a 5-liter canister. 125 ml.
When operating a lawn mower, 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 brushcutters 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 thereby.
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How to Mix Gasoline with Grass Trimmer Oil
Gasoline grass trimmers are ideal for site maintenance thanks to their portability. These models of lawn mowers require periodic fuel changes. The choice of gasoline must be approached competently. It is not worth saving much on the purchase.