lawn mowers are a fairly common technique for controlling weeds in summer cottages, in household plots, on the road, and in housing and communal services. These devices have two more names. trimmer and lawn mowing. These units differ in their engines. The more expensive of them have four-stroke engines, all the rest are two-stroke. Of course, the latter are the most popular among the population, as it is both simpler in design and mass lighter and much cheaper than its four-stroke competitors. However, two-stroke models are inconvenient in that the fuel mixture for them must be prepared manually, withstanding 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 appropriate substances. Let’s look at the question of the correctness of refueling just the push-pull lawn mowers, since it depends on how efficient and long the operation of such an aggregate will be.
First of all, it is necessary to take into account the information that the manufacturer recommends, since in case of failure of the lawn mowers, you can make your claims to him, and not to an external source. If there is no instruction in the passport, and even more so if there is no passport, we recommend that you look for a different trimmer model from a more reliable seller.
For all other cases when you have a model of lawn mowers in your hands and there is no way to find out its technical features, there are standard proportions of the most likely components of the fuel mixture for a two-stroke engine. Mostly for these units, AI-92 grade gasoline and special synthetic oil are used, which contains a solvent for better mixing with fuel. Such oil evaporates slowly and has the ability to completely burn in the cylinder without leaving a deposit.
The standard ratio of synthetic oil to gasoline is 1: 50. This means that for 5 liters of gasoline you need 100 ml of oil, and in accordance with this, the oil consumption per 1 liter of gasoline is 20 ml. Knowing the amount of oil needed to dilute 1 liter of fuel, you can easily calculate any norms when preparing fuel for the trimmer. When using mineral oils, the ratio of 1: 40 is most often standard. Therefore, 25 ml of such oil will be required per 1 liter of fuel, and 125 ml per 5-liter canister.
When the lawn mowers are working, a person who has little experience in operating such a technique will easily find and correct the actual amount of oil needed for a particular model. It is only necessary to pay attention to exhaust gases (their color, odor toxicity), cycle stability, engine heating and developed power. details about what consequences from the wrong proportions of mixing gasoline and oil can be expected are covered in another section of the article. There are options for lawn mowing running on AI-95 gasoline. This should also be considered.
If the manufacturer recommends a fuel with such an octane rating, then you must follow the requirements so as not to reduce the technical life of the equipment.
And now about how to mix components correctly. However, it will be more logical to start by analyzing common, but absolutely unacceptable errors that many owners of this mowing unit “sin”. The following actions are considered to be errors in mixing the fuel mixture.
- Adding oil to fuel already poured into the gas tank. Similarly, a homogeneous fuel mixture cannot be obtained. Perhaps it will turn out, if only then shake the trimmer for a long time. But hardly anyone will do this, given the severity of the unit.
- First pour oil into the mixing tank, and then add gasoline to it. Gasoline has a lower density than oil, so if it is poured to 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 energy will be required much more than if it were done the other way around. pour oil into the gasoline.
- Ignoring accurate measuring instruments to take the required volumes 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 bottles from under drinking water to prepare the fuel mixture. Such containers are made from too thin polyethylene, which can dissolve with gasoline.
Given all of the above, we recommend using the following rules when mixing the fuel mixture for two-stroke trimmer engines.
- To use for storage of gasoline, oil, finished fuel mixture and its preparation only clean containers made of metal or special plastic.
- Use to pour gasoline into the dilution tank with a watering can to avoid spillage, and to add oil, use a measuring container with volume risks or a 5 and 10 ml medical syringe.
- First, pour gasoline into the canister to prepare the fuel mixture, and then oil.
- To dilute the mixture, only half of the planned volume of gasoline is first poured into the tank.
- Next, add to the gasoline the entire amount of oil required to prepare the mixture.
- Thoroughly mix the contents of the dilution tank. It is best to interfere by making circular movements with a tightly closed container. Do not mix 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 with the ingredients of the mixture, how clean it is.
- The remainder of the gasoline is added to the mixed mixture and again thoroughly mixed.
- You can fill up the fuel tank of the lawn mowers with the prepared mixture.
It must be borne in mind that the finished fuel mixture should not be stored for more than 14 days, as it loses its properties, delaminates and evaporates, which leads to changes in the proportions, and hence the deterioration of the trimmer.
The consequences of a violation of the ratio
The working life of the engine of the motocosa depends on how accurately you comply with the proportions of the oil-gasoline mixture recommended by the manufacturer. 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 the lubrication of moving and rubbing parts and surfaces of various parts located in the cylinder. If it suddenly turns out that the oil is not enough, and somewhere it will not be enough to get enough, the parts in contact with dryness will begin to damage each other. As a result, galling, scratches and chips are formed, which will necessarily lead to complete or partial unsuitability of the engine (for example, it may 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 eventually turning into solid particles. coke, slag and the like. As you might guess, this also leads to engine failure. The most important thing that should not be allowed. even a single violation of the proportions in the direction of lack of oil. It is better to pour a little oil 10 times than not to add only 1 time. It often happens that this time is quite enough to break the engine.
How to choose for lawn mowers?
For two-stroke engines, the lawn mowers use AI-92 or AI-95 gasoline. Most often. the first of these. Information on this is necessarily available in the technical passport of the product. If for some reason it is not known exactly which gasoline the trimmer should work on, you can choose it by testing both brands of gasoline in action. There will be no global changes in the engine from this, but it is quite possible to determine which gasoline this or that model of the unit “loves” more. This will be shown by the developed power, and throttle response, and heating of the engine, as well as its stable operation at all speeds.
But with the proportions of oil to a certain volume of gasoline, it is much more difficult to determine. In this case, you need to know at least something about the manufacturer of the equipment. And already, according to standard proportions for this manufacturer, choose the proportion for a particular model taking into account the type of oil.
Video: How to Dilute Lawn Mower Gasoline
You can start the selection even in the country of production.
For instance, For Chinese low-power trimmers, two ratios are mainly used. 1: 25 or 1: 32. The first is for mineral, and the second is for synthetic oils. About the choice of standard proportions for lawn mowing European and American manufacturers in connection with the type of oil, we have already talked about earlier. In the oil class for household trimmers, you need to use TV oil according to the API classification. For more powerful. TS class.
For the ratio of gasoline and oil necessary for lawn mowing, see the next video.
Petrol trimmers are ideal for site maintenance due to their mobility. Such mower models require periodic fuel changes. The choice of gasoline must be approached competently. Strongly save on buying is not worth it.
Choosing a brand of gasoline for trimmers
It is necessary to select the brand of gasoline for lawn mowers, taking into account the manufacturer’s recommendations. If you do not comply with them, then the motor will soon break down. Often, unleaded fuel with an octane rating of 92 or 95 is used to refuel the trimmer’s gas tank.
Filling the trimmer with AI-80 grade gasoline can lead to breakdowns of the device 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, because when it comes into contact with the internal walls, static electricity will occur. Accidental sparks will cause an explosion. Although, there are special plastic canisters marked "flame".
Fuel mixture for two-stroke engines
Trimmers that are equipped with a two-stroke engine do not have a separate system designed to supply oil for the purpose of lubricating rubbing parts. For this reason, such devices need to be refueled not with clean gasoline, but with a mixture of fuel with engine oil. The latter should be specifically designed for two-stroke engines. The use of automotive engine fluid will lead to premature engine failure.
Preparation of a fuel mixture for two-wheeled engines
A gas engine with a two-stroke engine needs gasoline grade AI-92. When using AI-95, engine overheating 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 need 20 ml of oil.
If the motor is worn out or the tool is operating at high load, the proportion is 25: 1. If there is not enough lubricant, scoring will appear on the walls of the cylinder and piston surface. Then the piston ring will undergo destruction, as a result of which the engine will jam. An overabundance is not so critical, but it can lead to carbon deposits. At the same time, the piston ring is coked, which will reduce the power of the device.
Proportions of oil and gasoline for the fuel mixture
Four-stroke gasoline engine
Devices with a four-stroke engine are distinguished by a more complex device. Oil and gasoline are poured into different containers, from where they are then fed into the engine. For mowers with such a motor, AI-92 and AI-95 grades are needed. It is better not to use fuel with a lower octane rating, because this will lead to unstable engine operation. In addition, grease intended for push-pull models must not be used.
How to fill trimmer
The finished mixture of gasoline with oil can be stored for no more than 3 months (pure gasoline is stored less). Dilute fuel in an amount sufficient for several trimmer applications. In general, prepare:
- gasoline and oil, which is suitable for two-stroke engines with an air cooling system;
- metal canister and mixing container;
Adding Oil to Gasoline
- Pour 1 liter of gasoline into a suitable container and add 1/2 the right amount of oil.
- Mix gently while at a decent distance from open flames.
- Add the remaining half of the oil to the fuel and mix again.
Trimmer Refueling Process
General recommendations for refueling a trimmer with a two- or four-stroke engine:
- Position 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 in the inlet pipe and fuel filter, ignition of the fuel or damage to the engine.
- Try to fill the mixture so that it does not spill. You can use a watering can for this.
- If you nevertheless spilled fuel, wipe it off immediately. Dispose of cleaning materials, do not store them indoors. this is a fire hazard.
- Starting the device should begin after the fuel canister has been removed to a distance of more than 10 m.
- If there was a long break between the operations of the mower, be sure to drain the remaining old fuel.
lawn mowers and lawn mowers. Production of fuel consistency. Oil change in the lawn mower engine
When choosing a grass care product in a garden or summer cottage, the owner faces a choice. what to get. lawn mowing (electric mowing) or wheeled lawnmower. The wealth of information on the web and the tips of sellers make the perfect mess in the head of the future buyer, based not only on experience (including bad), but also on prejudice and outright ignorance.
lawn mowing. it is only for strong men! (like Schwarzenegger).
lawn mowing. it is a 1-2 hp two-stroke gasoline engine located at one end of the tube. And on the other end. cutting element, disc or reel with fishing line. The total weight of this device. a few kilograms. And the suspension point is made so that even a fragile woman can cope with the lawn mowing. Scythe is very well balanced.
Refueling two-stroke engines and preparing the fuel mixture. miracles of alchemy, inaccessible to the mere mortal.
And to prepare a mixture of "gasoline-oil" is no more difficult than filling salad with mayonnaise. Usually, on the braid (or chainsaw) the ratio of oil to gasoline is indicated in the consistency (1:32. 1:35). This ratio is for mineral oils. And they are currently for two-stroke engines. still seek out, perhaps in the midst of oils for motorcycle engines. For oils in small packaging for garden equipment. actually only synthetic oils. And their ratio is 1:50 (as is usually indicated on the package). You should adhere specifically to the packaging of oil!
For the manufacture of fuel mixture take a canister, for example in 5 liters of gasoline and add 100 ml of oil to it. That’s the whole secret. You will be provided with a consistency for the whole season. Will not be enough. repeat the procedure. Pour this mixture into the gas tank and no more troubles.
For Husqvarna lawn mowers, only Husqvarna oil must be bought.
Husqvarna does not have its own refineries. The main thing is to dilute gasoline with trimmer oil in accordance with the proportions in accordance with the product trait. This is a completely different business. Therefore, she buys oil for two-stroke pumps at the oil refinery in tanks, packs them in small jars and glues the Husqvarna tag. And she beats the extra 2-3 bucks for this tag from the uninformed. And it is necessary to dilute with oil, gasoline with oil, gasoline for the trimmer? How to breed. Another company, for example, “Stihl”, buys the same oil at the same factory and glues the “Stihl” tag on bottles. And also beats its 2-3 bucks from fools. At least some two-stroke oil is suitable for all two-stroke engines!
Wheel lawn mowers. only for perfectly smooth lawns.
Nothing of the kind. I also thought so on my own completely unplanned plot. It turned out that the wheeled lawnmower perfectly envelops the terrain. Obstacle for her. unless anthills that are removed with a shovel. And the wheeled lawnmower handles the convexity of the landscape perfectly. Especially if it has a height adjustment for mowing. The procedure for changing oil to oil for a lawn mower with how to change oil in a 4-stroke engine. Set the highest. and "check" the site. Where the knife clings to the ground. there you can work with a shovel.
Preparation of a fuel mixture for two-stroke engines
The video shows how to make a fuel mixture for two-stroke engines. Refueling mtkosa, chainsaws and
How to dilute gasoline (AI 92) for a benzo braid, trimmer
how to dilute gasoline (AI 92) for a benzo braid, trimmer.
The performance of a wheeled lawn mower is a couple of times higher than a manual lawn mower. And manage it. no harder than rolling a pram. You just go and direct her. Especially if the mower is self-propelled. Even kids can handle it.
Wheel lawn mowers have a 4-stroke and their maintenance. as complicated as a car.
Wheel lawn mowers usually have four-stroke engines. The fundamental difference between four-stroke engines and two-stroke ones. the presence of a crankcase in which the oil is used to lubricate the motor. Therefore, for the normal operation of a 4-stroke engine, it is not necessary to prepare the fuel mixture from oil and gasoline, it is enough to pour only gasoline into the gas tank. This event is presented by some dishonest merchants as a virtue. "They say, you do not need to bother with the manufacture of the fuel mixture.". With all this, they “cute” miss such a detail as the need for at least a yearly oil change in the crankcase of a wheeled lawnmower. The procedure is not complicated, it is much simpler than changing the oil of a car, but more difficult than making a fuel consistency. Fishing line and reel for trimmer: as with engine oil. Gasoline for trimmer s. Generally speaking, the oil in the crankcase of a wheeled lawnmower needs to be changed approximately every 50 hours of its production. A lawnmower does not have an oil filter and therefore the oil is not cleaned there. This leads to a more frequent mode of oil change. On the other hand. 50 hours of lawn mower operation per season. This is a very big time.
The process of changing the oil in a wheeled lawnmower is straightforward. Before changing the oil, it is better to let the mower run for 10-15 minutes, so that the oil warms up and becomes more watery.
In the design of at least some lawn mowers there is a special screw that covers the drain hole from the crankcase. Usually it is located under the filler and measuring neck of the crankcase. (in the photo. marked with an arrow).
The mower is installed with an inclination towards the drain hole, placing a wooden block or brick under the casing on the back side. Then unscrew the screw. traffic jam. So that the oil does not spill onto the cover of the mower, a groove is cut out of the plastic bottle, through which the oil will flow into the substituted container. How to dilute gasoline with chainsaw oil. Gasoline before changing the oil is better to develop from a gas tank.
After that, the screw-plug is unscrewed and the oil drained, tilting the lawn mower. When the oil drains, the screw is screwed into place. Fresh oil is poured through the measuring neck. When choosing a grass care product, as a rule, because gasoline is more. Typically, it is recommended that lawnmowers use oil with a viscosity of 10W40, mineral or semi-synthetic.
An inexperienced owner of garden motor vehicles, of course, is inclined to almost idolize the latest acquired equipment, right up to fetishism. What kind of oil is used for two-stroke engines of trimmers? How to mix gasoline with oil for trimmer? He wants to fill it with better gasoline and more expensive oil. This is a typical mistake, leading to a very quick failure of equipment!
The fact is that this gardening technique is made by “flow”, i.e. The materials used in it are the most mundane, not special. Clearances in the engines. “Conveyor”, nobody rubbed anything there. Therefore, do not pour more liquid oil than recommended by the manufacturer. It simply will not stay in the gaps between the parts.
You cannot pour gasoline of a higher grade than recommended. Since gasoline with a higher octane rating burns longer. And this is fraught with burnout of the valve, piston or rings.
It is impossible to fill the fuel mixture for two-stroke engines with oil more than expected (which would be better lubricated). The saying "you can’t spoil the porridge with butter" is not applicable at all. Here everything should be in moderation. In general, carefully read the annotation and follow it, and not the advice in online forums.
On the whole, the service of both 2- and 4-stroke engines is simple and does not require any special abilities or efforts. For two-stroke engines, it all comes down to making the fuel consistency and cleaning the air filters and air vents. And for four-stroke services, it comes down to a yearly oil change and cleaning water filters. Other yearly work on preparing the mower for the season is described in another article.