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..
Mixture storage rules
The remaining unused fuel mixture needs a dark, dry area where it can stay for up to 2 months. In general, there are different expert opinions on this matter:
- for mineral oils the shelf life is 7-10 days, after which their lubricating properties are lost;
- for semi-synthetic and synthetic brands, there is evidence that they are stored from 30 days to 2 months.
After a longer period of time, it is recommended to change the fuel to a fresher and newer one..
How to start a gas powered string trimmer
So, above was described in detail the process of how to properly dilute the gas mixture for two-stroke lawn mowers. To avoid damage to the trimmer due to insufficient oil or frequent cleaning and unstable operation due to excess lubricant, you should carefully read the operating instructions for the lawn mower and follow it scrupulously..
How to choose for lawn mowers?
For two-stroke engines, lawn mowers 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 lawn mowers 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 needed for lawn mowers, see the next video..
How to properly dilute gasoline for a trimmer
Depending on the trimmer type, they can be filled with a fuel mixture or separately with gasoline and oil. Now there is a huge variety of types of motor oils that are suitable for various equipment, including gardening. In order to choose the right fuel for a particular lawn mower model, you need to know its technical features and understand the brands of gasoline and liquid lubricants. All the details on how to dilute gasoline with trimmer oil are in the material below..
Fuel mixture preparation rules
For many newbies who have bought a lawn mower, the issue of diluting gasoline with oil to prepare a gasoline mixture becomes a problem. After all, you need to know the proportions and adhere to them very scrupulously. The instructions for the product usually indicate in what ratio to dilute the components: 1:25 or 1:32, or 1:40, or 1:50. This means that for 1 part of oil, you need to take 25, 32, 40 or 50 parts of gasoline and mix them.
In such categories, it is, of course, inconvenient to measure, therefore it is better to determine, by simple mathematical calculations, how much oil is needed per liter of gasoline. To do this, divide 1 liter, which is 1000 ml, by a known proportion. It turns out the following mixing table.
| Ratio | Gasoline (ml) | Oil (ml) |
| 1:25 | 1000 | 40 |
| 1:32 | 1000 | 32 |
| 1:40 | 1000 | 25 |
| 1:50 | 1000 | 20 |
Most often, mineral oils should be diluted in a 1:40 ratio, and synthetic grades should be diluted 1:50. Whereas for budget Chinese lawn mowers, the proportions are completely different – 1:32 or 1:25. This is due to the fact that in low-power models made in China, a different assembly is used, and the distance between the piston and the cylinder is much greater..
Advice! For measuring fuel, it is best to use a graduated measuring container. Even an ordinary syringe is suitable for this..
Further actions have the following sequence.
- First, you need to pour gasoline into the container (canister), and then add the required amount of oil. If you first pour out the oil, then due to the higher density it will settle on the walls of the container and mix poorly.
- The next step – the contents of the canister should be thoroughly mixed by means of circular movements of the closed container..
- After dilution to homogeneity, the fuel must be poured into the fuel tank of the lawn mowers.
Important! You should not immediately use the gas tank to prepare the mixture.
How to Mix Petrol Oil for 2 Stroke Engine Whipper Snipper / Weed Whacker
You can watch the video for more detailed and visual instructions..
How to refuel the trimmer
A ready-made mixture of gasoline and oil can be stored for no more than 3 months (pure gasoline is stored less). Dilute enough fuel for several trimmer uses. In general, prepare:
- gasoline and oil that is suitable for two-stroke air-cooled engines;
- metal canister and mixing container;
- respirator;
- gloves.
Adding oil to gasoline
Dilution instructions:
- Pour 1 liter of gasoline into a container of suitable volume and add 1/2 of the required amount of oil.
- Stir gently while keeping a good distance from open flames.
- Add the remaining half of the oil to the fuel and stir again..
Trimmer refueling process
General tips for refueling a trimmer with a 2- or 4-stroke engine:
- Place the fuel tank so that the lid is on top, then fill in the required amount of fuel.
- Do not overfill the fuel tank. This will lead to one of the problems: overflow into the intake manifold and fuel filter, fuel ignition or engine breakdown..
- Try to pour the mixture so that it does not spill. To do this, you can use a watering can.
- If you do spill fuel, wipe it up immediately. Dispose of the cleaning material, do not accumulate in the room – it is fire hazard.
- The start-up of the device should be started after the fuel canister has been removed at a distance of more than 10 m..
- If there was a long break between the operations of the mower, then the remaining old fuel must be drained.
Refueling the four-stroke lawn mower
Four-stroke engines are used in professional lawn mowers. 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, four-stroke lawn mower engines are also more economical. They consume much less fuel – savings of up to 50% for gasoline and up to 80% for oil.
Consequences of refueling with a mixture with incorrect proportions
When diluting fuels and lubricants, it is very important to adhere to the ratio recommended by the lawn mower manufacturer. If there is not enough oil, then scuffs will form on the piston and cylinder, which sooner or later will lead to a breakdown of the piston ring..
Important! In addition, as a result of friction, metal from the piston settles on the cylinder walls, and the engine can simply jam. This will require repair or replacement of the motor..
And with an excessive amount of oil, coking of the piston ring occurs, as well as the formation of carbon deposits on the piston, on the spark plug, etc. All this leads to heavy wear and tear of equipment and the need for constant cleaning..
How to refuel the trimmer
A ready-made mixture of gasoline and oil can be stored for no more than 3 months (pure gasoline is stored less). Dilute enough fuel for several trimmer uses. In general, prepare:
- gasoline and oil that is suitable for two-stroke air-cooled engines;
- metal canister and mixing container;
- respirator;
- gloves.
Adding oil to gasoline
Dilution instructions:
- Pour 1 liter of gasoline into a container of suitable volume and add 1/2 of the required amount of oil.
- Stir gently while keeping a good distance from open flames.
- Add the remaining half of the oil to the fuel and stir again..
Trimmer refueling process
General tips for refueling a trimmer with a 2- or 4-stroke engine:
- Place the fuel tank so that the lid is on top, then fill in the required amount of fuel.
- Do not overfill the fuel tank. This will lead to one of the problems: overflow into the intake manifold and fuel filter, fuel ignition or engine breakdown..
- Try to pour the mixture so that it does not spill. To do this, you can use a watering can.
- If you do spill fuel, wipe it up immediately. Dispose of the cleaning material, do not accumulate in the room – it is fire hazard.
- The start-up of the device should be started after the fuel canister has been removed at a distance of more than 10 m..
- If there was a long break between the operations of the mower, then the remaining old fuel must be drained.
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..
Gasoline for trimmer
Fuel mixture for two-stroke engines
Trimmers that are equipped with a two-stroke motor do not have a separate system for supplying oil to lubricate the rubbing parts. For this reason, such devices should not be refueled with pure gasoline, but with a mixture of fuel and engine oil. The latter must be specially designed for two-stroke engines. Application of automotive engine fluid will result in premature engine failure..
Preparation of a fuel mixture for two-wheel engines
You need to refuel a lawnmower with a two-stroke engine with AI-92 gasoline. When using AI-95, overheating of the engine and uneven operation of the unit may be observed. You need to mix gasoline with oil in a ratio of 50: 1, where 50 is fuel, and 1 is oil. It turns out that 1 liter of fuel will require 20 ml of oil..
If the motor is worn out or the tool is under heavy load, then the ratio is 25: 1. If there is little lubrication, then scuffs will appear on the cylinder walls and the piston surface. Then the piston ring will undergo destruction, causing the engine to jam. The excess is not so critical, but it can lead to the formation of carbon deposits. At the same time, the piston ring will coke, which will reduce the power of the device..
Ratio of oil and gasoline for the fuel mixture
Which oil to choose
For effective trimmer operation, it is necessary to select oil for two-stroke engines. This is due to the lack of an oil sump in such a device. Depending on the chemical composition of the oil, the following classification is distinguished:
- mineral – based on petroleum distillate, suitable for low-power and air-cooled equipment, but requires frequent replacement and can only be used in good weather during the warm season;
- semi-synthetic – suitable for garden equipment with air and liquid cooling;
- synthetic – based on esters, do not require frequent replacement and can be used at any time of the year.
Oil for 2-stroke engines is characterized by good solubility and complete combustion feature. It is recommended to use a lubricant for the trimmer that is suitable for air-cooled units. Most often, it is indicated on the packaging that the oil is intended for garden equipment and is marked TA, TB or TC. Moreover, the last of them is the most preferable.
Lawn mower manufacturers often produce the right oil, so you can make your choice easier if you choose the right brand fluid..
Gasoline for trimmer
Gasoline trimmers are ideal for site maintenance due to their portability. These models of lawn mowers require periodic fuel changes. The choice of gasoline must be approached competently. It is not worth saving much on the purchase.
Refueling the two-stroke lawn mower
In ordinary household models, the lawn mower usually uses a two-stroke engine. Lawn mowers do not need a lot of power and agility, so it is quite suitable for the task at hand. In addition, this engine is much cheaper and simpler, but it is fueled with a mixture of oil and gasoline. Such fuel is poured into the carburetor and fed into the cylinder in the form of oil-gasoline mist. Thus, the oil provides lubrication of all the necessary parts, and in the process of engine operation, it burns along with gasoline. However, the combustion of this mixture is accompanied by the release of a pungent odor and smoke, which increases the toxicity of exhaust gases..
Important! For such lawn mowers, you need to use a special oil for two-stroke engines, which burns completely without leaving a burn, and has a low evaporation rate. And so that it mixes well with gasoline, it contains 20% solvent.
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 a two-stroke lawnmower cannot be supplemented with oil that is designed for a four-stroke engine or for a liquid cooling system. 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.
Mixture storage rules
The remaining unused fuel mixture needs a dark, dry area where it can stay for up to 2 months. In general, there are different expert opinions on this matter:
- for mineral oils the shelf life is 7-10 days, after which their lubricating properties are lost;
- for semi-synthetic and synthetic brands, there is evidence that they are stored from 30 days to 2 months.
After a longer period of time, it is recommended to change the fuel to a fresher and newer one..
So, above was described in detail the process of how to properly dilute the gas mixture for two-stroke lawn mowers. To avoid damage to the trimmer due to insufficient oil or frequent cleaning and unstable operation due to excess lubricant, you should carefully read the operating instructions for the lawn mower and follow it scrupulously..
Refueling the four-stroke lawn mower
Four-stroke engines are used in professional lawn mowers. 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, four-stroke lawn mower engines are also more economical. They consume much less fuel – savings of up to 50% for gasoline and up to 80% for oil.
How to properly dilute gasoline for a trimmer
Depending on the trimmer type, they can be filled with a fuel mixture or separately with gasoline and oil. Now there is a huge variety of types of motor oils that are suitable for various equipment, including gardening. In order to choose the right fuel for a particular lawn mower model, you need to know its technical features and understand the brands of gasoline and liquid lubricants. All the details on how to dilute gasoline with trimmer oil are in the material below..
Fuel mixture preparation rules
For many newbies who have bought a lawn mower, the issue of diluting gasoline with oil to prepare a gasoline mixture becomes a problem. After all, you need to know the proportions and adhere to them very scrupulously. The instructions for the product usually indicate in what ratio to dilute the components: 1:25 or 1:32, or 1:40, or 1:50. This means that for 1 part of oil, you need to take 25, 32, 40 or 50 parts of gasoline and mix them.
In such categories, it is, of course, inconvenient to measure, therefore it is better to determine, by simple mathematical calculations, how much oil is needed per liter of gasoline. To do this, divide 1 liter, which is 1000 ml, by a known proportion. It turns out the following mixing table.
| Ratio | Gasoline (ml) | Oil (ml) |
| 1:25 | 1000 | 40 |
| 1:32 | 1000 | 32 |
| 1:40 | 1000 | 25 |
| 1:50 | 1000 | 20 |
Most often, mineral oils should be diluted in a 1:40 ratio, and synthetic grades should be diluted 1:50. Whereas for budget Chinese lawn mowers, the proportions are completely different – 1:32 or 1:25. This is due to the fact that in low-power models made in China, a different assembly is used, and the distance between the piston and the cylinder is much greater..
Advice! For measuring fuel, it is best to use a graduated measuring container. Even an ordinary syringe is suitable for this..
Further actions have the following sequence.
- First, you need to pour gasoline into the container (canister), and then add the required amount of oil. If you first pour out the oil, then due to the higher density it will settle on the walls of the container and mix poorly.
- The next step – the contents of the canister should be thoroughly mixed by means of circular movements of the closed container..
- After dilution to homogeneity, the fuel must be poured into the fuel tank of the lawn mowers.
Important! You should not immediately use the gas tank to prepare the mixture.
You can watch the video for more detailed and visual instructions..
Oil selection rules
Engine oil, depending on the chemical composition, is:
- mineral – made from petroleum distillates and designed for low-power air-cooled equipment;
- semi-synthetic – is a mixture of mineral and synthetic oils and is suitable for 2T and 4T, as well as for air and liquid cooling;
- synthetic – made on the basis of esters and can be used in powerful technology, as well as for work in difficult climatic conditions.
Important! Oils for two-stroke and four-stroke engines differ in their ability to dissolve, burn and evaporate. At the same time, in order for the liquid lubricant to differ from gasoline, it is painted in different colors: blue, green, red.
Depending on the API classification, the following groups of oils for trimmer motors can be distinguished:
- TA – for low-power equipment with an engine volume of up to 50 cm³ and air cooling;
- TV – for powerful equipment with a motor volume of 50-200 cm³ and an air cooling system;
- TS – for powerful two-stroke equipment (lawn mowers, chainsaws, lawn mowers, etc.) with an engine volume of 50-200 cm³;
- TD – for engines of boats with liquid cooling.
To select the optimal oil for a particular trimmer model, it is better to take into account the recommendations specified in the instructions. For 2T lawn mowers, API-TB and API-TC oil is usually used..
On a note! In addition, there is a JASO classification for two-stroke engines, and SAE30 is still used for four-stroke engines..
Leading garden equipment manufacturers develop and produce oils for their equipment themselves. Such lubricating compositions most fully satisfy all the technical and operational characteristics of a specific series of trimmers. For example, for Stihl (Stihl) FS 5 lawn mowers it is best to use Stihl HP or Stihl HP SUPER oil, for Husqvarna 143R it is best to use Husqvarna HP or Husqvarna LS oil. But for the Patriot brand, ordinary mineral oil M-8B is also suitable..