How to mix oil with gasoline for the grass trimmer
Fuel mix for two-stroke engines
Grass trimmers, which are equipped with a two-stroke motor, do not have a separate system designed for oil supply in order to lubricate the rubbing parts. For this reason it is not necessary to fill such devices with pure gasoline, but with a mixture of fuel and engine oil. The latter should be specially designed for two-stroke engines. The use of automotive engine fluid will lead to premature engine failure.
Preparation of fuel mixture for twin-coil engines
Gasoline of AI-92 brand should be used to fill the lawnmower with a two-stroke engine. Using Ai-95 can cause engine overheating and irregular machine operation. Mix petrol with oil in the ratio 50:1, where 50. is fuel and 1. oil. It turns out that 1 liter of fuel will need 20 ml of oil.
If the motor is worn out or the tool works with a high load, the proportion is 25:1. If there is not enough lubricant, then the cylinder walls and piston surface will be scuffed. Then the piston ring will be destroyed, resulting in the engine will jam. Over-lubrication is not so critical, but it can lead to the formation of carbon deposits. The piston ring will then get corked, which will reduce the power of the device.
Proportions of oil and gasoline for the fuel mixture
Gasoline and oil for grass trimmer: proportions and consumption
Gasoline trimmers for grass have long been in the use of many dacha owners and owners of homestead plots.
Their convenience is undeniable, because the work does not require a stationary power supply, and the absence of electrical wires allows the use of these machines away from home.
For all that, the devices are quite powerful, and there are professional models among them.
Any gasoline grass trimmer requires 2 types of fuel and lubricants (fuels and lubricants) to operate, that is:
Basic Operations STIHL Grass Trimmer | How To Mix Oil & Gas, Start & Run Engine, Re-Spool String Etc
However, the principle of operation of two and four-stroke engines of chain saws is different, and it depends on this, how much oil to add per liter of gasoline, and what kind of oil can be poured into the motor.
- how the lubrication system of two-stroke and four-stroke motors works;
- what is the difference between the oils for different engine types
- what gasoline and what oil is better to pour into a lawnmower with different types of motors;
- What happens if you mix up the type and method of oil;
- How to dilute gasoline and oil for a lawnmower with a two-stroke engine;
- how much lubricant to put in four-stroke engines;
- What are the rates of consumption of fuel and lubricants.
How to prepare the right fuel mixture for a grass trimmer?
We will tell you how to dilute gasoline with oil for grass trimmer. You should deal with organizational issues beforehand:
- Selection of containers for storing fuel mixture components. Buy metal gasoline canisters. For lubricating fluids, the factory package will suffice.
- You should not prepare a large volume of flammable mixture in the engine, because its structure will be disturbed. The separation into fractions will begin: the heavy will sink to the bottom, and the light will form the top layer.
- Prepare a medical syringe to accurately dose the lubricating fluid to add to the gasoline for dilution.
We draw the attention of grass trimmer owners to one detail. You should not buy lubricants in advance. Buy a volume that will be enough for the coming season.
Preparation of the mixture
How much oil to pour per liter to make a quality gasoline mixture? It doesn’t seem difficult to mix the two substances. Preparation of the mixture is often complicated by the fact that different sources indicate different information. For example, the manual specifies the proportion 1 to 40, on the fuel tank of the grass trimmer 1 to 25, and on the oil canister 1 to 50.
Most experts believe that you should mix in accordance with the instructions on the oil package.
There are a number of requirements for how dilution should be carried out. Do not add too much oil. It leads to poor combustion characteristics. The consequence of this is a devaluation of the efficiency of the power unit, and an overall reduction in its service life. If the gasoline mixture is oversaturated with oil, soot deposits will form on the inner surface of the engine walls (cylinder vents). It is fraught with the risk of scoring on the piston.
Neither oil starvation nor excessive lubricant in the gasoline base is a good basis for long-term performance of an internal combustion engine. The same amount of additives is required for trouble-free continuous operation. Breeding is best done with the same measuring tools to eliminate unnecessary errors.
How to calculate, say, how much oil to pour on 1 liter of gasoline at the required ratio of 1 to 50? To do this, convert the volume of gasoline to milliliters, 1 liter = 1000 ml. Accordingly, to achieve a ratio of 1 to 50 thousand divided by fifty. You need only 20 grams of oil per liter of gasoline. Some people measure oil with a 20cc syringe, but for such purposes there is a special measuring spoon, which is sometimes supplied with oil from some manufacturers.
For the convenience of calculating the oil to gasoline ratio, here is a table https://cmetnik.ru/oil/
Let’s prepare a fuel mixture for a two-stroke engine with forced air cooling. Such engines are usually used in chainsaws and brushcutters.To prepare the fuel we will need:
- Gasoline. I buy a 92 t.к. it has less additives. Most manufacturers of chainsaws and brushcutters advise to take gasoline with an octane number not lower than 90, so 92 is suitable.
- Oil. This time I got semi-synthetic oil from ALC. The color of the oil is green. The color itself has no meaning and is determined by the dye that is added to the engine oil. Dye is needed to know that there is oil in the fuel mixture and to be able to roughly estimate its amount.
- A glass bottle for mixing gasoline and oil. Never mix gasoline and oil in the tank. You just can’t do it right. Do not use plastic bottles to mix the fuel mixture. The plastic used in Coke and other beverage bottles dissolves, settles on the carburetor membranes of chainsaws and brushcutters and causes them to malfunction.
- Measuring cup or syringe. To have a precise dosage of oil. I use a 20cc medical syringe, which you can buy at any drugstore.
- Leech, needed to avoid spilling fuel past the bottle.
- A small container in which oil can be poured. You can get oil with a syringe from the neck of the bottle, but it’s inconvenient.
Pour some oil for chainsaws and brushcutters into a small container and measure the amount we need with a syringe. I prepare fuel for the Echo SRM-22GES brushcutter. According to the manual the oil to gasoline ratio for this engine is 50:1. The fuel tank capacity of this brushcutter is 0,5 l. It turns out that I need 20 ml per liter of gasoline. the oil, and for a half-liter bottle, which is just enough to fill a complete brushcutter, I only need 10ml of motor oil.
Once the oil dosage is selected, all that’s left is to pour the oil from the syringe into a glass mixing bottle, add the gasoline and mix the.
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You’re ready to go. A properly prepared fuel mixture is a guarantee that our chainsaw and lawnmower will work for a long time without the need to replace the piston group.
How to mix oil with gasoline for your grass trimmer
The gardening season is about to begin. Get your equipment ready for the season.
A properly mixed mixture, will ensure smooth engine operation, complete combustion without formation of soot, smoke or scuffing.
The mix should be mixed with 92 grade gasoline and two-stroke motor oil (synthetic).
Fuels below 92, with a lower octane number are not suitable. We don’t recommend the 95th, t.к. The engine oil contains many additives that can adversely affect the performance of your petrol equipment.
Do not mix the fuel-oil mix before each use of the vehicle. Do not use too much oil.
Do not store the oil-fuel mixture for more than 2 weeks, after that irreversible processes of oxidation and changes in the mixture composition take place.
that is, per liter of gasoline. 20 milliliters of oil.
(Or this proportion 100 ml of oil per 5 liters of gasoline).
A full tank at full load lasts 30 to 45 minutes, if you do not plan to use the equipment that long, do not fill a full tank.
Do not use old gasoline, it wears out with time and changes the octane number.
GRASS CUTTER UNLEADED or PREMIUM?
Never fill a power tool with pure gasoline for a two-stroke engine or there is a danger of serious and costly repairs.
It is possible to fill only with petrol-oil mixture.
Why the wrong oil ratio can put the machine out of commission?
All this is because, unlike 4-stroke, 2-stroke engines do not have an external lubrication system of the internal parts of the engine, a properly prepared fuel mixture is very important for them. Adding too little oil reduces the lubricating power of the mixture and wear out the machine very quickly. Conversely, if you add too much oil. it will impair the combustibility of the mixture and greatly reduce the output of the machine.
A 2-stroke engine does not have a separate oil sump, and all rubbing parts inside the engine are lubricated with oil. which is in the fuel mixture.
The oil should lubricate all rubbing surfaces inside the engine and burn without fouling. This is the fundamental difference between oils for 2-stroke and 4-stroke engines.
In addition to the above functions oil should:
- Seal the gaps, first of all, between elements of the cylinder-piston group, prevent and minimize bursting of gases from the combustion chamber.
- Divert the heat generated by fuel combustion and friction.
- prevent corrosion of engine parts.
mix the ingredients in a gasoline-resistant container, not in the tank itself! Pour the gasoline into a clean and dry canister then add the oil there.
In the reverse order it is not necessary t.к. The first oil you pour in will stick to the bottom and is hard to mix, you will have to work harder. After adding both ingredients, close the container tightly, and shake thoroughly, actively mixing the components.
Oil for brushcutters how to choose, in what proportions to dilute
Many of you have gasoline-powered tools in your household, for example, in a private home, you can’t do without a chainsaw. You know, to prepare wood for the winter, it comes in handy at construction and repair, and in general, it’s a very useful tool. If your country house also has a decent sized plot, then you just need a grass trimmer or lawn mower to deal with the grass, which also run on gasoline.
Of course you can buy electric as well, but not everyone likes to pull a 30-meter extension cord to mow a knee-deep patch of grass. That’s why most people prefer to work with gasoline-powered tools. As you know, you need to add a special oil for two-stroke engines to petrol. Here we are going to talk about it, because it is a very important aspect, if you do not add oil and add in wrong proportions, then your engine will fail very quickly and your way will be to the service center. To avoid all these troubles, you should add only quality oil in right proportions.
The most popular for chain saws, brush cutters and trimmers are products of the famous STIHL company. It comes in 2 packages of 1 liter and 100 ml. For those who work a lot, a liter bottle is good, but a small bottle is enough for a single sawing job. A 1 liter bottle costs 250, but a 10 ml bottle costs 60. If you get the big one, the savings are obvious.
The oil is added to gasoline in the ratio of 1 to 50, that is, for example, for 5 liters of gasoline add 100 ml. As you can see, a small bottle is perfect for getting 5 liters of gasoline mixture to fill a chainsaw or trimmer for grass. The big bottle has marks on the side so you can see how much oil you’ve taken out. If you bought a big 1 liter bottle, buy a 20ml syringe at the drugstore as well. It is very convenient to add 1 syringe of oil to 1 liter of gasoline.
We do advise you to use an oil that is specific to your machine, it’s perfect because it has been tested and developed for STIHL machines. Note that Stihl has its own brands, such as VIKING (popular models of gasoline trimmers). Use Stihl oil for them as well and you won’t have any problems at all.
If you have put more gasoline mixture than you can use, it is better to store the rest in a metal canister or in a glass container. In no case do not store the mixture in a plastic bottle. Of course, if you use up the leftovers in a couple of days, you can pour the rest of the mixture into a plastic container, but if the mixture will be stored for a long time, then either a canister or a glass container. The thing is that the gasoline mixture corrodes the plastic bottle, there are microscopic precipitations of plastic in the mixture and this is very bad for the engine. Keep it in mind if you want your tool to work long and without problems.
The second most popular oil brand is the well-known Hawksvarna. Of course, when you think about it that way, more people use STIHL chain saws, at least all my friends and their friends use them only in their work.
But there are those who cherish Husqvarna tools and I understand them, because I personally do not see much difference between Husqvarna and Stihl, both tools are of very high quality. But I have seen the happy owners of Husqvarna chainsaws and they say the saws are great. I have not cut my own saws but I always listen to what people say. So if you have Husqvarna gasoline tool, it would be better to use special brand oil for it. Although nothing terrible will happen if you dilute the gasoline Stihl. But since the manufacturer recommends using only his products, that’s what we’ll do.
On sale you can find one-liter bottles. A black stylish bottle, the same markings on the side, as in Stihl (to know how much oil has been poured from the bottle). Seems to me absolutely identical quality. It costs 270, a little bit more.
Both are high-quality oils, costing about the same, each diluted at a ratio of 1 to 50. So feel free to buy any oil, of course, better to buy the oil of that brand you have the tool in general then everything will be perfect, just like the manufacturer advises. Have a nice time while mowing, cutting grass and let your power tool run for a long time without breaks.
How to prepare the fuel mix: Proportion of oil and petrol for your chain saw
The chainsaw engine is the “heart” of the tool, so it is very important to use a properly prepared fuel mixture.
Chain saw fuel mixture is made of two components. oil and gasoline. Chainsaws are equipped with two-stroke engines, so oil is not added to the lubrication system (as in a four-stroke engine), but directly to the gasoline. It is very important to observe the correct proportions of ingredients and, of course, in no case try to work with pure gasoline, because that way you will “kill” the chain saw very quickly.
The oil must necessarily be intended for two-stroke engines of gardening and forestry equipment (that is, under no circumstances should you use oil for boat motors or scooters). As practice shows, you can buy such oil in any store or service center, where chain saws are sold or serviced.
If we talk about what gasoline pour into the chain saw, it is optimal to use fuel with an octane number of A-95, in this case, the savings on fuel can turn out badly. European manufacturers often indicate that you can use gasoline A-90 or A-92, but in post-Soviet countries the quality of gasoline is inferior to European, so in our realities it is better to use higher-quality gasoline.
As for the proportion of gasoline-oil mixture itself, then everything is simple: you must clearly follow the instructions of the tool. All chainsaw manufacturers indicate the necessary ratio in the instruction manual or in the tool’s certificate, moreover, the proportions for fueling a chainsaw may differ depending on the model of chain saw. As a rule the ratio of oil and gasoline in a chain saw of the famous manufacturers is 1:40 or 1:50, that means one part of oil to 40 parts of gasoline, for instance.
Now the arithmetic. 1 liter of gasoline = 1000 ml of gasoline, divide by 40 and you get 25 ml of oil. If you do the same for a 1:50 ratio, you get 20 ml of oil for 1 liter of gasoline.
As for budget Chinese-made chainsaws, the situation is a little different. Gasoline to oil ratio for chainsaws made in China 1:25, so 1,000 ml of gasoline divided by 25, you get 40 ml of oil. The thing is that in branded chainsaws the solid build and the distance between pistons and cylinders in the engine is much smaller than in Chinese chainsaws, that’s why the required oil amount is twice as much different.
In order to measure a correct portion of oil, use an ordinary medical syringe of sufficient volume.
One more subtlety. In a dry gasoline canister, pour the gasoline first, and then the oil. The procedure on the contrary is fraught with low quality fuel mixture, because the oil is denser, will stick to the bottom of the canister. That’s why there’s no way to talk about a good mix.
fuel in a fuel canister and fill the tank with ready-to-use special fuel! Never prepare and mix it directly in the fuel tank of the chainsaw!
If you’ve solved the question of how to dilute gasoline for a chainsaw, then the about fuel mixture storage conditions and expiration dates it’s worth saying a few words. It is best and easiest to prepare gasoline-oil mixture for 1 liter of gasoline, it is recommended to do it just before working with the tool. Gasoline fuel tanks in chainsaws have a capacity of 0.3 to 1 liter. In a household setting the entire volume of the fuel mixture is seldom used in one sitting, so you can store the remainder until the next working session. Store the fuel mixture in a special fuel canister in a dark, dry place. It is optimal to calculate that The storage time of the ready mixture will be 7-10 days
The fact that the oil presented now on the market is not synthetic, but organic, that is natural. After 10 days, all the lubricating properties are lost, the gasoline simply “eats” the oil. Naturally, you can no longer use such fuel, it can cause a breakdown and failure of the chainsaw.
At the end of the work it is necessary to drain the fuel mixture and start the chainsaw. the tool will stall (so that the saw has a dry carburetor) and now you can leave it until the next session of operation.
Peculiarities of filling the brushcutter
In order for the mixture to properly distribute in the fuel system of the device, it is necessary to follow a simple instruction. How to properly fuel a gasoline trimmer for grass:
- Put your brushcutter on a horizontal surface so that the tank neck is on top and pour in the required amount of mixture;
- Never fill the grass trimmer with too much fuel. keep an eye on how much fuel is left at the top mark;
- Never spill fuel on the ground or on the body;
- Keep a safe distance to the fuel containers before starting the engine;
- If there was old fuel in the tank, the gas tank must be completely emptied before refueling with new fuel.
Filling up your brushcutter with a two-stroke engine
For this type of petrol trimmer you need to follow the same instructions as before. Check the correct oil ratio and do not spill oil on the housing. Make sure that the gas tank is not overfilled, because then the engine will not work steadily.
Fueling brushcutters with four-stroke engines
The main difference is that the grass trimmers with this type of engine is not filled with a mixture of oil. It is necessary to fill separately Ai-92 and engine oil. The general rules for filling the tank are the same as described above.
In the manual supplied with the product, it is written in what ratio it is necessary to mix oil with gasoline. For the STIHL FS 250 for example, this is 1:50, which means that you need 100 grams of oil for every five liters of petrol (5000 : 50 = 100). Here. 1:50, that is 1 liter of oil for 50 liters of gasoline.
If you use a two-stroke motor, which has a lubrication system, a fuel mix of petrol and oil is required:
- for running-in. in 1:25 proportion (1 liter of oil to 25 liters of petrol);
- for long-distance travel in high-speed mode, transporting heavy loads. in the ratio 1:50 (1 liter of oil to 50 liters of gasoline);
Oil for brushcuts. how to choose, in what proportions to dilute
Many of you have petrol power tools in your household, and a chainsaw is indispensable in a detached home, for example. You know, making firewood for the winter, comes in handy on construction and repair, and in general, it is a very useful tool. If the country house also has a decent-sized plot, then the grass trimmer or lawn mower, which also run on gasoline, is simply necessary to fight the grass.
Of course, you can buy them and electric, but not everyone likes to pull a 30-meter extension cord to mow the area overgrown with grass to the knee. Therefore, most people prefer to work with gasoline tools. As you know, you need to add a special oil for two-stroke engines. Here we are going to talk about it, because this is a very important aspect, if you do not add oil and add in wrong proportions, then your engine will “croaknut” very quickly and your way will lie in the service center. To avoid all these troubles, add only quality oil and in the right proportions.
The most popular for chainsaws, brush cutters and trimmers are products of the famous company STIHL. It is sold in two packages. 1 liter and 100 ml. If you’re a hard worker, a liter bottle is often sufficient. A 1 liter container costs 250, while a 10 ml container costs 60. If you buy a large one, the savings are obvious.
Add the oil to the gasoline at a ratio of 1:50, which means you add 100 ml for 5 liters of gasoline, for example. As you can see, a small bottle is great for getting 5 liters of gasoline mixture to fuel a chainsaw or grass trimmer. there are special marks on the side of a big bottle so you can see how much oil you have poured out of the bottle. If you bought a big 1 liter bottle, you can buy a 20ml syringe at the drugstore. Very convenient. 1 syringe of oil for 1 liter of gasoline.
STIHL recommends an oil that is suitable for your machine because it has been developed and tested on STIHL power tools. I should note that Stihl has its own brands, such as VIKING (popular models of gasoline trimmers). Use Stihl oil for them as well and you won’t have any problems at all.
If you have more gasoline mixture than you can use, it is better to store the leftovers in a metal canister or glass container. Do not store the mixture in a plastic bottle under any circumstances. Of course, if you use up the rest in a couple of days, you can pour the rest of the mixture and in a plastic container, but if the mixture will be stored for a long time, then either a canister or a glass container. The thing is that the gasoline mixture corrodes the plastic bottle, microscopic deposits of plastic appear in the mixture and this is very bad for the engine. Keep this in mind if you want your tool to run long and without problems.
The second most popular brand of oil is the unbeknownst Hooksvarna. Of course, if you think about it this way, still more people use chain saws STIHL, at least all my friends and their friends use in their work only them.
But there are those who cherish Husqvarna tools and I understand them, because I personally do not see much difference between Husqvarna and Stihl, both tools are of very high quality. But I’ve seen some happy Husqvarna chain saw owners. they say the saws are great. I haven’t done it myself, but I always listen to what people say. So, if you have a Husqvarna power tool, it would be better to use a special brand oil for it. But nothing bad will happen if you dilute the gasoline with Stihl. But since the manufacturer recommends using only its products, we are going to do so.
On sale you can find a liter containers. Black stylish bottle with the same markings on the side as Stihl’s (to know how much oil has been poured out of the bottle). To me the quality is exactly the same. It’s 270, a little more expensive.
Both oils are of high quality, cost about the same, and are each diluted at a ratio of 1 to 50. So feel free to buy any oil and of course it is better to buy the oil of your own brand. then everything will be perfect, just the way the producer advises. Have a nice sawing, mowing and let your power tool work for a long time without damage.
Preparation of mixture
The fuel ratio must be accurate, calculated according to the manufacturer’s recommendations. It is not advised to dilute it “by eye”, because not enough oil in the mix and equally its overabundance will cause engine damage. For mixing you need to choose the type of fuel, the brand of lubricant and how much oil to pour into the gasoline.
For preparation of fuel mixture unleaded gasoline of not less than AI-90 grade is used. Formerly used for this purpose AI-80, which was cheaper than others, but over time this type of gasoline left the fuel market. The best option was AI-92. Do not use fuel that is not factory-recommended for a particular engine. It will soon knock it out of operation.
When refueling, it is necessary to consider a number of recommendations. You can’t fill up gasoline in plastic containers, because:
- It can cause fire, because plastic is a material that can generate static electricity when subjected to friction.
- Gasoline destroys plastic on contact. Its micro particles will get into the fuel, and that will cause a low-quality mixture for a two-stroke engine.
Choosing oil for two-stroke engines
API-TB or API-TC brand oils should be purchased for 2-stroke engines. The instructions to the equipment or gasoline tool will necessarily indicate the recommended brand of oil, 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 harsher times at low temperatures.
When buying oil it is necessary to be guided by how much mixture is needed for the equipment. If you plan to use a lawnmower, 1-2 liters is enough for the season. If it is a scooter or boat motor, the amount required is much greater. Guided by the instructions, you can make correct fuel calculations in advance.
Gasoline and oil proportions
There is no definite answer to the question of how much oil per liter of gasoline is required. Each gasoline two-stroke engine has its own ratio depending on the power and the period of use. The operating instructions indicate the figures, and the ratio during the running-in period and subsequent operation is different.
For example, for garden equipment. mowers (grass trimmers), chain saws, the proportion of constant operation is 1:50, running-in 1:40. Proportion of oil and gasoline for a boat motor is also individual: 1:25. running-in, 1:40. short period of operation, 1:50. long-term operation. oil is needed for power tillers, cultivators: 1:20 for running-in, 1:30 for continuous operation. Motorcycles, scooters need even more oil. Here the ratio during the running-in period will be 1:15, and later the fuel mixture will need 1:20.
The position that the more oil, the better or on the principle of “it will not get worse” is not relevant. Higher concentration will cause increased engine wear, because a layer of soot will be formed. Proportioning must be accurate. For convenience, the table of fuel mixing for two-stroke engines is used. It specifies indicators to determine the need for gasoline and oil to prepare a certain amount of fuel, taking into account the required proportion.
Mixing oil with gasoline
All work with fuels and lubricants must be carried out with the observance of safety measures, namely:
- Using gloves to prevent oil and gasoline particles from getting on the skin;
- Mixing should be done outside so that gasoline vapors do not accumulate;
- Do not work near open flames, heaters or smoking.
In addition to safety measures, be careful with measuring containers and funnels. Everything has to be clean. It is necessary to exclude any ingress of dust, garbage, water into the ready fuel mixture. Otherwise such refueling will lead to clogging of the carburetor and other fuel supply elements at the very least.
A measuring cup is used for mixing. This can be a separate container with a measure or a special compartment on the oil bottle. In any case first prepare a quantity of oil and gasoline taking into account the required proportions. Next, the oil is poured into the gasoline and mixed. The fluid must take on a homogenous color depending on whether the color of the lubricant is blue, red or green. The fuel mixture for a two-stroke engine is ready.
Do not mix the components directly in the vehicle’s gas tank. Cooking only in a separate container.