How much oil to add to petrol for grass trimmer?
As a rule, the ratio of oil and gasoline in a gasoline trimmer from reputable manufacturers is 1:40 or 1:50, which means 1 part oil in, for example, 40 parts gasoline.31 Aug.
In the instructions, attached to the product, it is written in what ratio it is necessary to mix oil with gasoline. For example, for STIHL FS 250 trimmers, it is 1:50, which means that it is necessary to add 100 grams of oil to 5 liters of petrol (5000 : 50 = 100). Here. 1:50, i.e. 1 liter of oil for 50 liters of petrol.
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 specifically designed for two-stroke engines. Using automobile engine fluid will lead to premature engine failure.
Preparing fuel mix for two-stroke engines
Gasoline for a lawnmower with a two-cycle engine should be of АI-92 grade. When using AI-95, you might observe overheating of the engine and uneven engine performance. Mix petrol with oil in the proportion 50:1, where 50 is fuel and 1 is oil. It turns out that you need 20 ml of oil per 1 liter of fuel.
If the engine is worn or the tool is running with a high load, the ratio is 25:1. If there is not enough lubricant, then scoring will occur on the cylinder walls and piston surface. The piston ring will then be destroyed and the engine will seize up. Over-lubrication is not that critical, but it can lead to fouling. Piston ring will get cindered in this case, what will reduce power of the device.
Proportions of oil and gasoline for the fuel mixture
It is recommended to buy unleaded gasoline to operate your garden equipment. Otherwise there is a risk of engine failure. Manufacturers advise fuel with an octane number not lower than AI-90, better AI-92 or AI-95. You can find specific recommendations for your tool in the instruction manual. At the filling station, pour the required amount of fuel into a canister. It is desirable to take a metal container: in such a container does not arise static electricity from friction, which increases the safety of use.
Always buy brand name two-stroke oils, preferably API-TB or API-TC. The manufacturer should indicate the recommended brand in the instruction manual of the tool. Also consider their composition. Mineral oils are suitable for use in warm weather. Synthetic oils are better, they are less viscous and can be used even in freezing temperatures. Semi-synthetic are mineral with improved qualities, versatile for any season. You can find the temperature limit on the package. Also note the volume. What matters is not the proportion of gasoline and chain saw oil, but how much fuel mixture you need for one filling and how often you will be working with the tool. If you own a grass trimmer or chain saw and use one or the other tool several times a week, it makes sense to buy a large 3 to 5 liter oil can. For several mowing operations during the season it is enough to use a 1 liter bottle.
Mixing oil with petrol
When you start working with a tool, there is always the question of how much oil to add to gasoline for a chainsaw or grass trimmer. It is important to remember that for two-stroke engines the ratio is 1:50, t.е. you need 100 ml of oil for every 5 liters of fuel. Why it is important to follow the proportions? Too much oil precipitates soot deposits on pistons and spark plugs, and too little oil reduces the lubricating power of the fuel mixture, which leads to burrs in the piston group and increases the risk of engine damage.
The easiest way to keep your chainsaw proportions of gasoline and oil in proportion is to use measuring jugs. These have a scale with markings on them for easy reference. Before pouring gasoline and oil in, make sure the container is clean. Avoid getting water and dirt inside. it can affect the quality of the fuel mixture. First fill petrol to the proper level, then add oil to the proper level. To mix it up, tilt the container a few times. The liquids will quickly mix and the composition will take on a uniform color, such as green or red (depending on the composition of the oil).
It is important to know! Never use plastic drink bottles for storing and mixing the fuel mixture. Gasoline corrodes plastic. And even if the walls of the bottle look intact, harmful components will get into the fuel mixture, and with it into the engine. This is very bad for the carburetor.
It is recommended to wear gloves to protect your hands from petrol and oil. Also remember the basic rules of fire safety. Mix liquids outdoors so gasoline fumes do not accumulate indoors. Do not smoke while working and avoid other factors that can cause ignition of fuel and lubricants.
Pour the prepared fuel mixture into the fuel tank and close the cap tightly. If you made more mix than you can use at one time, pour it into a separate canister for storage or leave it in the mixing tank. Most importantly. close the cap tightly. The ready-to-use mixture may be stored for up to two weeks and used for refueling without risk to the engine. The only condition is that you do not leave it in the fuel tank. If the tool will not be used for a long time. use up the leftovers completely or drain them.
Now you know how to dilute gasoline for a chainsaw so as not to harm the engine. Try it yourself. After you prepare the fuel mixture several times, it will be clear how much of the components will be needed, so there is no excessive mixture. You can buy everything you need in our online store. Your brand-name oils will last for a long time in your tool.
For gardening equipment we recommend to buy unleaded gasoline. Otherwise there is a risk of engine failure. Manufacturers recommend fuel with octane number no lower than Ai-90, preferably Ai-92 or Ai-95. For individual recommendations for your tool, please see the instruction manual. At the filling station fill the canister with the required amount of fuel. It is desirable to take a metal container: in such a container does not generate static electricity from friction, which increases the safety of use.
Buy branded oils for two-stroke engines, preferably API-TB or API-TC. The manufacturer should specify the recommended grades in the instruction manual for the tool. Also consider their composition. Mineral oils are suitable for use in warm weather. Synthetic is better, they are less viscous and can be used even in freezing temperatures. Semi-synthetics are mineral oils with improved qualities, versatile for any season. For temperature limits, see label on package. Also pay attention to the volume. It is not the proportion of gasoline and chain saw oil that matters, but how much fuel mixture you need for one filling and how often you will be working with the tool. If you have a grass trimmer or chain saw in your arsenal and use one or the other tool several times a week, it makes sense to buy a large 3 to 5 liter canister of oil. For several mowing operations during the season a 1 liter bottle is sufficient.
Mixing Oil with Gasoline
At the beginning of work with the tool there is always the question of how much oil to add to gasoline for a chainsaw or grass trimmer. It is important to remember that for two-stroke engines the ratio is 1:50, t.е. 100 ml of oil for every 5 litres of fuel. Why the ratio is important? To reduce the risk of engine damage, do not use too much oil if you don’t regularly check the oil proportions.
The easiest way to obtain the right gasoline to oil ratio for your chainsaw is to use measuring jugs. They have a scale with markings on it which is easy to follow. Before pouring in the gasoline and oil, make sure the container is clean. Do not get any water or dirt in the container. this will affect the quality of the fuel mixture. First pour gasoline up to the proper level, then add oil, also to the proper level. To mix, tilt the can several times. Liquids will quickly mix, and the composition will acquire a homogeneous color, such as green or red (depending on the composition of the oil).
Important to know! Never use plastic drink bottles for storing and mixing the fuel mixture. Gasoline corrodes plastics. Even if the walls of the bottle seem to be intact, harmful components will enter the fuel mixture and with it, the engine. It is very bad for the carburetor.
Wearing gloves is recommended to protect your hands from gasoline and oil. Also remember the elementary rules of fire safety. Mix the fluids outside so gasoline fumes do not build up indoors. Do not smoke while working and exclude other factors that can cause ignition of combustibles and lubricants.
Pour the fuel mixture you have prepared into the fuel tank and close the cap tightly. If you have blended more than you can use at one time, empty it into a separate canister for storage or leave it in the mixing tank. The main thing is to close the cap tightly. The ready-to-use mixture can be stored for up to two weeks and can be used for refueling without risk to the engine. The only condition is that you do not leave it in the fuel tank. If you won’t be using your tool for a while. use up all the leftovers or drain it.
Now you know how to dilute gasoline for a chainsaw so as not to harm the engine. Try to do it yourself. It is often the case that problems with oil and fuel ratios arise during startup, when you have blended the fuel a couple of times, so that you know how much fuel is needed. and with no extra fuel left over. You can buy everything you need in our online store. With brand-name oils your tool will last a long time.
It is not uncommon to have problems with the proportions of oil and fuel for the reliable operation of a brushcutter. The reason for this is completely different information in the papers. You may encounter a difference in the data on the ratio by a dozen units, and sometimes. by half. So you can’t help but wonder how much oil you really need per liter of gasoline: 20 ml or 40 ml. But for this there is a technical passport for the product, which you buy in the store. There should be a description of the device, instructions for its operation and instructions on how to prepare the fuel mixture.
First of all, it is necessary to take into account the information that the manufacturer recommends, because in the case of mower failure, you can present your claims to him, but not to a third-party source. If there is no instruction in the passport, and even more so if the passport is missing, it is recommended to look for another grass trimmer model from a more reliable seller.
For all other cases, when you have a lawnmower model in your hands and there is no way to know its technical features, there are standard proportions of the most likely components of the fuel mixture for a two-stroke engine. Basically for these units is used gasoline AI-92 and a special synthetic oil, which contains a solvent for better mixing with fuel. Such oil evaporates slowly and is capable of burning completely in the cylinder, leaving no carbon residue.
The standard ratio of synthetic oil to gasoline is 1: 50. This means that you need 100 ml of oil for 5 liters of gasoline, and accordingly the oil consumption for 1 liter of gasoline is 20 ml. Knowing the amount of oil needed to dilute 1 liter of fuel, you can easily calculate any rates in the preparation of fuel for the grass trimmer. If mineral oils are used, the standard ratio is often 1:40. This means it requires 25 ml for 1 liter of petrol, and 125 ml for a 5 liter canister.
When operating a lawnmower, it will not be difficult for a person with little experience in operating such equipment to determine and adjust the actual amount of oil needed for a particular model. You should only pay attention to the exhaust gases (their color, odor toxicity), stability of cycles, engine heating and developed power. about what consequences from improper gasoline and oil mixing proportions can be expected, is covered in another section of the article. There are various types of brushcutters with AI-95 gasoline. This should also be taken into account.
If the manufacturer recommends fuel with this octane number, it is necessary to follow the requirements, so as not to reduce the operating life of the equipment.
Fuel mix: the oil and gasoline proportion for your chain saw
The chainsaw engine is the “heart” of the tool, so it’s very important to use a properly mixed fuel.
The fuel mixture for a chainsaw is made of two components. oil and gasoline. The chainsaws are equipped with a two-stroke engine and therefore oil is not added to the lubrication system (like in a four-stroke engine) but directly to the gasoline. In this case it is very important to observe the correct proportions of ingredients and, of course, in any case do not try to work on pure gasoline, because that way you will very quickly “kill” the chain saw.
The oil must necessarily be designed for two-stroke engines of gardening and forestry equipment (that is, in no case can you use oil for boat motors or scooters). As experience shows, you can buy this oil in any store or service center where chainsaws are sold or serviced.
If we talk about what gasoline to fill a chain saw, it is optimal to use fuel with the 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 inferior to European, so in our reality is better to use higher-quality gasoline.
As for the petrol-oil mixture ratio itself, everything is simple: it is necessary to follow the instructions of the tool. All chainsaw manufacturers indicate the necessary ratio in the instruction manual or in the tool’s certificate, besides, the proportions for filling the chainsaw may differ depending on the model of the chainsaw. as a rule, the ratio of oil to gasoline on a reputable chain saw is 1:40 or 1:50, which means 1 part oil to, say, 40 parts gasoline.
Now the arithmetic: 1 liter of gasoline = 1000 ml of gasoline, divide by 40 and you get 25 ml of oil. If you perform the same actions to the ratio 1:50, you get 20 ml of oil per 1 liter of gasoline.
As for the budget chainsaws made in China, the situation is a little different. Petrol to oil ratio for chainsaw made in China 1:25, that is 1000 ml of gasoline divided by 25, you get 40 ml of oil. The thing is that in branded chainsaws the solid build and distance between pistons and cylinders in the engine is much less than in Chinese-made 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 thing to note. 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. So there is no way you can mix it well.
Always prepare fuel mix in canister and fill fuel tank with already prepared special fuel! Never prepare and mix it directly in the gasoline tank of your chainsaw!
If the question of how to dilute gasoline for a gasoline chainsaw figured out, then and about fuel mixture storage conditions and expiration dates it is worth saying a few words. It is best and easiest to prepare a gasoline-oil mixture for 1 liter of gasoline, it is recommended to do it immediately before working with the tool. Gasoline chain saw fuel tanks have a capacity of 0.3 to 1 liter. Household use seldom uses the entire volume of the fuel mixture cooked in one sitting, so the remainder can be saved until the next session. The fuel mixture should be stored in a special canister for gasoline, in a dry, dark place. The optimum is to storage time of the ready mixture is 7-10 days
The fact that the oil presented in the market now is not synthetic, and organic, that is natural. After 10 days all lubricating properties are lost, gasoline simply “eats” the oil. Naturally, it’s no longer possible to use such fuel, it can cause a breakdown and failure of the gasoline-powered saw.
At the end of the work you need 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.
How to mix (dilute) gasoline and oil for 2t engines.
To summarize the above. Use an oil for your brand name equipment that is designed or recommended by the manufacturer of that equipment. For the STIHL FS 55 brushcutter, for example, STIHL HP oil (see. Figure 1a) or STIHL HP SUPER, for the Husqvarna 128R brushcutter use Husqvarna HP oil (Figure 1b) or Husqvarna LS oil. For 2.Do not use engine oils for 4-stroke engines. for example 10W30, SAE 30 etc.д.
Figure 1 a- Husqvarna oil (left), b- STIHL oil (right)
Never use 2-stroke oil intended for water-cooled engines, because these oils are designed to operate at lower temperatures.
It is necessary to observe proportions of oil and petrol for fuel mixture, indicated by manufacturers in the instruction manual. The most common oil proportion indicated by the Chinese manufacturers is 1 part oil to 25 parts gasoline, and the STIHL and Husqvarna oils are 1/ 50.When mixing a small amount of oil (up to 1 liter), it is very important to carefully measure the amount of oil in the mixture. Even small miscalculations in the amount of oil can lead to serious inconsistencies in the mixture. In these cases, a medicine syringe can be used for accurate dispensing.The fuel mixture must be prepared in a clean container specially designed for this purpose. (see “Fuel mixture preparation” on page 5). Figure 2)
I do not recommend the use of improvised plastic bottles and canisters, because gasoline can dissolve plastics and all this “slurry” gets into the fuel tank and disables the carburetor.
Plastic canisters designed for petrol are always marked with the “flame” sign. It is very convenient to use a canister with a no-fill system (see Fig. 2). Figure 3). The no-fill system has a valve that prevents fuel from spilling when the tank is full.
Figure 3: No-fill system
Oil for brushcutter. how to choose and in what proportions to dilute it
Many of you have gasoline tools in the household, for example, in a private home can not do without a chainsaw. You know, making firewood for the winter, it comes in handy at construction and repair, and in general, this is a very useful tool. If your country house has a decent-sized plot, you just need a trimmer or lawn mower to deal with grass, which also run on gasoline.
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. That’s why most people prefer to work with gasoline tools. As you know you need to add a special oil for two-stroke engines to petrol. Here we will talk about it, because this is a very important aspect, if you don’t 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 have to add only quality oil in the right proportions.
How much oil does it take to fill a lawnmower and how to change
The most popular for chainsaws, brush cutters and trimmers are products of the famous company STIHL. It comes in two packages: 1 liter and 100 ml. For those who work a lot, a liter bottle will do. And a small bottle will be quite enough for “one cut”. A 1 liter container costs 250 and a 10 ml bottle costs 60. If you buy a large one, the savings are obvious.
The oil is added to gasoline in the ratio of 1 to 50, so 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 a trimmer for grass. The large bottle has special marks on the side, by which you can determine how much oil you have poured out of the bottle. If you buy a large 1 liter bottle, then buy a 20ml syringe at the pharmacy as well. Very convenient. 1 syringe of oil for 1 liter of gasoline.
We advise you to use STIHL brand oil. it’s perfect because it’s been developed and tested on STIHL power tools. 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 applied more gasoline mixture than you can use, it is best to store the remainder in a metal canister or glass container. Never 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, microscopic deposits of plastic appear in the mixture, and this is very bad for the engine. Keep that in mind if you want your tool to run long and without problems.
The second most popular brand of oil is the unbeknownst to Hooksvarna. Of course, if you think about it, still more people use chain saws STIHL, at least all my friends and their friends only use them in their work.
However, there are those who cherish Husqvarna tools and I understand them, because I personally do not see much difference between Husqvarna and Stihl, and both tools are of very high quality. But I have seen the happy owners of Husqvarna chainsaws. they say the saws are great. I haven’t cut any saws myself, but I always listen to what people have to say. So, if you have a Husqvarna gasoline tool, it would be better to use a special brand oil for it. But nothing bad will happen if you dilute your gasoline with Stihl. But since a producer recommends to use only his products, so we do it.
You can find liter bottles on sale. A black stylish bottle, the same markings on the side as on the Stihl (to know how much oil has been poured out of the bottle). Seems to me the quality is absolutely identical. The price of a bottle like this is 270, a little bit more expensive.
Both are high-quality oil, the cost is about the same, and each is diluted in the proportion of 1 to 50. So feel free to buy any, of course, it is better to take the oil of the brand that you have the tool. then everything will be perfect, just like the manufacturer advises. Have a safe and reliable sawing and grass mowing season and a long, trouble-free life with your power tool.