How much oil per liter of gasoline for petrol cutters

Oil selection and fuel mixture for petrol cutters

So, have you finally become the owner of a petrol brushcutter 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. brushcutter 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 cooling 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 is their color, which can be green, red or blue. Of course, this does not mean that some lubricant is better, and some is 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, brushcutters, 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 brushcutters, 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 brushcutters: why accuracy is so important?

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 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 petrol cutters?

Everything is quite simple, with 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 the brushcutter, you need to familiarize yourself with the performance characteristics 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:

To ensure that the proportion of oil for petrol cutters is observed correctly, 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 sufficient 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 get 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.

Petrol

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 petrol mowers, made 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 equally evenly inside the engine. Then, return the candle to its original state. Store equipment in a cool dry place.

Outcomes

Fuel types for cars

What are the prospects for US oil consumption?

The US Energy Information Administration predicts in its Annual Energy Outlook 2020 Reference Example. that liquid fuels (oil and other liquids) will account for about 35% of total U.S. energy use in 2050, up from 37% in 2019. As an example, liquid fuels continue to be the main source of energy for the transport sector; however, the share of liquid fuels in total energy consumption in transport will change from 97% in 2019 to 91 %% in 2050, and the volume of total consumption of liquid fuels in the transport sector, according to projected to be about 11% lower in 2050 than volume in 2019.

Last updated: July 24, 2020.

How to choose the right gasoline for your lawn mower. Features of refueling and fuel proportions.

For productive and long-term operation of the device, it is necessary to fill it with a suitable brand of gasoline or a fuel mixture prepared in ideal ratios. If you inattentively follow the manufacturer’s recommendations and fill the tank with an unsuitable brand of fuel, then over time the equipment will fail. This will cause the following problems:

• carbon deposits will appear on the entire piston system;
• candles and cylinders will become unusable;
• the motor will constantly overheat and work intermittently;
• the efficiency of the device will decrease.

TD. For water cooled outboard motors.

Most suitable material for API-TB and API-TC 2T engines. However, you should refer directly to the product data sheet, where the manufacturer indicates the brand of engine oil recommended for its equipment.

Important! For mowers, lawn mowers and other 2T garden tools, there is a special two-stroke engine oil with an air-cooled system and marked “for garden equipment”. Do not use lubricant for 2T liquid cooled motors. Oil for outboard motors, motorcycles and other equipment is also not recommended.

Oil to Gasoline Ratio for Gasoline Scales: Why Accuracy Is So Important?

We all loved to chew as children, so the process of making a fuel mixture is not only simple, but also fun. First of all, it is worth considering the fact that the proportions of the mixture may be different. It depends on engine configuration, oil markings and manufacturer recommendations. The fact is that with insufficient lubrication, the cylinder and piston heat up, which leads to a small rupture of all friction surfaces and, consequently, to the failure of the cylinder. Piston group. But in the case of its excess, on the contrary, we get coking of the piston ring and the formation of a large amount of soot.

And even though there is a standard mixing ratio of 2% (for every liter of gasoline, 20 ml of oil). It is still recommended that the proportions in the mixture are maintained exactly.

How much oil to pour into the gasoline for the brush?

Everything is quite simple, with the right balance, the engine runs completely, all parts are thoroughly lubricated and will not be erased. As a result, we get confidently working equipment that will last more than one season.

To find out how much oil to lubricate, you should familiarize yourself with the product specifications. The proportion can be represented as 1:25, 1:40 and 1:50, which means 1 part oil to 25, 40 or 50 parts gasoline.

1 liter of gasoline = 1000 ml

50:1 Fuel to oil ratio ● easy way to calculate

To determine the required amount of oil for a ratio of 1:25, you need 1000/25 and we get a ratio of 40 ml.

We follow the same steps as 1:40 and 1:50:

1:40 (1 liter of gasoline per 25 ml of oil)
1:50 (1 liter of gasoline per 20 ml of oil)

To ensure the correct proportions of the hedge trimmer oil, it is recommended to use a special measuring container (not plastic). Avoid getting dirt and water into the fuel mixture. This can affect its quality. Better to start cooking with gasoline. Pour it to the desired mark and then add oil. A couple of tank slopes are enough to mix. The liquid quickly combines with a uniform hue, which, depending on the structure of the oil, can be red, green, blue or otherwise. Then the properly prepared mixture is poured into the equipment fuel tank.

2 STROKE OIL MIX any ratio and any quantity EASY

Make sure the tank cap is tightly closed before using the equipment. If you have more fuel, leftovers can be stored in a dedicated jar or mixing container (up to 14 days). It is recommended to drain fuel that has not been fully used.

Important! Be sure to follow the safety instructions. Mix the liquid in an open area to avoid the accumulation of caustic gasoline in the room. Wear gloves and long sleeves. Do not smoke or burn anything.

Petrol

Gasoline AI-92 is considered the most popular type of fuel for two-stroke engines. Due to its relatively low cost, it is rarely counterfeited. Therefore, not one hundred percent, but you can be sure of its quality. Fuel class AI-95 is also allowed.

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 negatively affects the combustion chamber. Gasoline fuel mixture made from low quality materials will deposit as soot, causing damage to major engine components and systems.

Recommendations for use and storage

The fuel is ready, the fuel tank is full, the first push and the welcome start. However, if you want the equipment to run for as long as possible, it is recommended that you start it up first. To avoid overheating the motor, it is recommended to maintain a medium load. After thorough lubrication, the main elements of the load system can be increased.

When preparing braids for seasonal storage, certain rules should also be followed:

Drain the remaining fuel from the fuel tank and start the last run until the fuel is completely used up. Then pause and make sure the engine is completely cool.

Remove the spark plug carefully and add about 5 ml of oil. 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.

Result

Petrol cutters with four-stroke engines

Trimmers, driven by a four-stroke engine, have a more complex device, providing separate containers for gasoline and oil. In such units, the lubricant used in two-stroke motors cannot be used. Gasoline for a mower with such a motor can be of the AI-92 or AI-95 brands. It is not recommended to use fuels with a lower octane rating, as this will lead to interruptions and further malfunctions.

The four-stroke engine is less expensive in terms of the amount of gasoline and oil, and also emits less exhaust gases.

For two-stroke mode, the ignition must be on, the fuel supply must be on, and the engine crankshaft must be cranked with a starter or starter.

Further operation of the two-stroke engine is carried out according to the following algorithm:

• the piston starts to move towards the spark plug from bottom dead center. At this time, the fuel mixture enters the cylinder working chamber. The outlet window is opened to exit and the working mixture is compressed;
• At the initial stage of the compression cycle in the crank mechanism chamber, the pressure drops, contributing to the flow of a new portion of gasoline. In the upper phase of the piston movement, the working mixture is ignited by a spark from a candle;
• The energy generated when gasoline ignites causes the piston to move to its lowest point. Due to the open channel of the exhaust port, the exhaust gases escape through the elbow connected to the muffler;
• Further movement of the piston causes the purge channel to open and gasoline to flow into the cylinder working area. The phase of displacement of the piston to the bottom point completes the engine operating cycle and repeats the cycle.

In the process of supplying gasoline mixed with oil, the components of the power unit are lubricated. This distinguishes the two-stroke engine lubrication system from the four-stroke engine lubrication system, which has a gear pump to supply oil to the area of ​​the engine’s connected parts.

Oil mixed with gasoline is lubricated in the crank mechanism

What if you don’t follow the manufacturer’s recommendations?

With violation of the rules for the preparation of fuels and lubricants and non-observance of the proportions when adding oil to gasoline on the Stihl 180 chainsaw; The following problems arise:

• With increasing friction, wear of the working surfaces of parts increases.
• Insufficient lubrication will cause bearings to deteriorate.
• The full functioning of mechanical components is impaired due to premature wear of parts, their service life is significantly reduced.
• When using low-grade gasoline and oils, the performance of the unit decreases with the subsequent failure of important components and parts.

The fuel is prepared before refueling, avoiding excessive contact with oxygen. After completing the work, the rest of the mixture must be drained.

Service of petrol cutters

Here you will find information on how to properly care for all parts of the equipment, how to adjust, how to disassemble and how and how to lubricate the petrol cutter (moving parts).

Engine. Keep the air filter clean, foam rubber products should be moistened with oil. The fuel filter needs to be checked at least once a week and, in the event of a malfunction, must be replaced in a timely manner. The muffler and spark plugs should be regularly cleaned of carbon deposits (as they become dirty). Before each start of operation, check the tightness of all screws and nuts.

The bevel gear must be cleaned of dust and dirt as needed, as this interferes with effective cooling, and then lubricated with any gear lubricant such as STIHL.

Trimmer head with line. The mowing head must be cleaned after each use of the trimmer and replaced promptly as soon as deformation or cracks are found. It is necessary to use only a special cord (line) for trimmers, no ropes or wires! The diameter of the line must be the same as stated for the particular model. The winding of the cord should be tight, but without crossing the threads.

Cutting equipment (saw blade or knife). Metal products must be sharpened (for this there are special templates and files) at a special angle. It is advisable to turn reversible models over from time to time for even wear. Blunt or improperly sharpened discs and knives will overload the engine and shorten service life.

Protective guards must always be worn when mowing. They protect the operator from flying grass and stones from under the cutting equipment, and also reduce the load on the engine. After use, thoroughly clean the inside and outside of the casing with a water jet or soft cloth, being careful not to scratch the surface.

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 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 petrol cutter model in your hands and there is no way to find out its technical features, there are standard proportions of the most probable components of the fuel mixture 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 working with petrol cutters, 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.

The ratio of gasoline and oil for brushcutters

• Standard proportions
• Mixing rules
• Consequences of violation of the ratio
• How to choose for a petrol cutter?

Gas cutters 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 brushcutter. 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 question of the correct filling of the two-stroke brushcutter, since it depends on how effective and long the operation of such a unit will be.

Consequences of violation of the ratio

The service life of the motor scooter depends on how accurately you follow the manufacturer’s recommended oil-gasoline ratio. 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 in the direction of a 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.

Mixing rules

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 brushcutter’s 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 much more energy will be required 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 pour 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. You should 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 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.

How to choose for a petrol cutter?

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 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 petrol cutters 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 necessary for a petrol cutter, see the next video.