Ratio of gasoline mixture for grass trimmer

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.

Selection of oil and gasoline for preparation of fuel mixture for grass trimmer

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.

Consequences of violation of the ratio

The service life of the motor scooter engine 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 add just 1 time. It often happens that this time is quite enough to break the engine.

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.

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.

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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”.

STIHL TRIMMER FUEL MIX RATIO EASY WAY TO MEASURE

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.

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 you will succeed if you only shake the grass 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 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 it will take much more energy than if it were done the other way around. pour oil into the poured gasoline.
  • Ignoring precise 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 the fuel mixture for two-stroke engines of the grass trimmer.

  • 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. 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 mower’s fuel tank with the prepared mixture.
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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 the operation of the grass trimmer.

Practical recommendations for preparing a mixture

As oil for a lawn mower, one should not consider completely primitive options, which include autolas of the AC-10, ASZp-10 brands or exotic Chinese and garage origin “masterpieces”. The bulk of lubricants for two-stroke engines are painted by manufacturers in colors contrasting to gasoline: red, green or blue. There are several recommendations, proven by many years of practical operation of trimmers.

How much grease is required to dilute 1 liter of fuel if the operating instructions indicate the ratio 1:40, on the fuel tank. 1:25, and on the oil canister. 1:50? The answer is unequivocal. you need to follow the recommendations given on the packaging with the lubricant. Two-stroke engines do not like oil starvation, but you should not oversaturate gasoline with oil either. This provokes the formation of abundant soot deposits on the ventilation ports of the cylinder, which leads to seizure of the piston.

Gasoline diluted with an excessive amount of lubricant ignites worse, which devalues ​​the efficiency of the engine and reduces its resource.

The proportion of how to dilute gasoline with trimmer oils is not difficult to calculate. It is enough to divide the amount of gasoline by the recommended ratio. One liter of gasoline is 1000 ml. To calculate how much lubricant you need to add to get a mixture of 1:50, you need to divide 1000 by 50. It turns out that 1 liter of fuel requires 20 ml of oil. It is convenient to measure the required amount of lubricant with a disposable syringe, with a volume of 20 ml.

Gas-to-Oil Ratio for a Homelite Weed Trimmer

Do not prepare a large amount of the fuel mixture in advance. Gasoline diluted with oil should be stored in a tightly closed container in a dark, cool room. It is safer to use steel or aluminum canisters to store the prepared mixture, rather than plastic containers. This is especially true for beverage containers. Polyethylene terephthalate, which is used in their production, is not resistant to most oil products and additives. But plastic is great for sewer systems https://ingplast.ru/sistema-navozoudaleniya/

It should be remembered that the resource of the unit, its performance, fuel consumption and comfort when working on the lawn largely depend on how to dilute gasoline with trimmer oils.

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Important feature

The prepared combustible mixture for the grass trimmer enters the combustion chamber of the cylinder in the form of a whitish mist. The oil integrated into gasoline lubricates the crankshaft and cylinder walls. Underfilling with oil in the fuel is fraught with premature wear of parts and assemblies of the grass trimmer. Exceeding the norm leads to soot settling on the working parts, which is also fraught with premature technical wear of the brushcutter.

A gasoline mower will serve the owner for a long time, provided that they will not pour any gasoline into the fuel tank, but high-quality fuel.

How to dilute gasoline with grass trimmer oil

Dilute the grass trimmer gasoline in the correct proportion. Insufficient oil can lead to poor lubrication of the mower components, which contributes to rapid wear.

The correct ratio can be found in the trimmer instructions. Most often it is equal to 1:25, 1:40, 1:50. To obtain such proportions in 1 liter of gasoline, you need to add 40 ml, 25 ml and 20 ml of oil, respectively.

It is unacceptable to dilute gasoline with lubricant directly in the fuel tank; moreover, the proportion of oil and gasoline must be strictly observed. If this rule is ignored, the grass trimmer motor can be erratic, causing it to fail quickly.

It is not recommended to use plastic bottles or canisters for this purpose. This is due to the fact that gasoline has the ability to dissolve plastic, which means that some of the plastic can get into the fuel tank, which can lead to damage to the carburetor. Although there are special plastic canisters labeled “flame”.

  • petrol;
  • oil suitable for air-cooled two-stroke engines;
  • canister, preferably metal;
  • mixing container, metal is also better;
  • gloves;
  • respirator.

Make a mixture of gasoline and oil as follows:

  • Pour 1 liter of gasoline into a container, add half of the required portion of oil. Mix thoroughly, do it with extreme caution, away from sources of open fire.
  • Add the rest of the oil to the grass trimmer gasoline and mix thoroughly again. Fuel can now be added to the grass trimmer fuel tank.

The mixture can be stored for no more than three months, so it is better to dilute gasoline in such an amount that it is enough for several uses.

What two-stroke engines dislike?

When preparing the working mixture manually, it should be remembered that two-stroke engines do not reach their design working power if the proportions of the fuel mixture are violated. The above condition forces the owner of the unit to comply with the proportions. As practice shows, the use of brushcutters with an underfilled lubricant product. there is an oil starvation of the engine, which does not allow the unit to be brought to the rated power.

Excess lubricant prevents the engine from developing the required power. When preparing the working mixture, a reasonable question arises, how much oil needs to be mixed in gasoline. Helps to define the exact standard. It is recommended that gasoline is poured into the grass trimmer according to the following mathematical calculation. If the fuel tank holds 5 liters, 1 liter of gasoline is divided by 50. That is, 100 ml of lubricating consistency is poured into the gasoline for the grass trimmer mower per 5 liters. The owner of the brushcutter gets the ideal fuel in terms of structural composition.