How to mix oil with gasoline for a lawn trimmer

How much oil to pour into the grass trimmer per liter of gasoline

Gasoline mowers are quite common tools used by owners of garden and homestead farms for mowing grass and making hay. common names for tools are the terms “grass trimmer” and “lawnmower”. The main difference is hidden in the design of the motor. the expensive segment of the devices is equipped with four-stroke models, and the cheap ones. two-stroke. The latter option has advantages, including low weight, ease of use, as well as low cost.

The most important condition for the work of two-stroke models is the preparation of the fuel mixture, based on the manufacturer’s defined proportion of gasoline and oil. The motor’s simplified design does not provide a separate channel for lubrication, so engine oil is added directly to the gasoline. Violation of the correct proportion leads to a significant reduction in the resource of the tool and even to its failure. Let’s understand what composition is required for gasoline trimmers, how to properly prepare the mixture and what it can affect.

Choice of gasoline for grass trimmer

For some reason everyone prefers to choose the brand of gasoline for trimmers at its discretion. This is a wrong approach, because, first of all, you should carefully study the instructions, where the manufacturer’s recommendations are given on the choice of type of fuel. But this is not a guarantee either, because unleaded fuel can be sold under different brands (which differ in many manufacturers), significantly different in composition. Therefore, it is necessary to be guided by the main characteristics in order to choose gasoline for a certain model of trimmer for grass.

Petrol tool manufacturers recommend using a brand of gasoline AI-92, but for more expensive types will need fuel with a higher octane number. AI-95. Any brand with the number 90 or less in its marking is not suitable for gasoline scissors, because it leads to quick wear and tear. The problem is caused by unscrupulous fuel producers who sell a completely different brand under the guise of 92. You have the following situation:

  • In the passport of gasoline equipment there is a recommendation to use gasoline with an octane number not lower than 92;
  • The conscientious owner goes to the gas station with the lowest price and with a clear conscience fills the brushcutter with such fuel;
  • As a result service life decreases, because often under the guise of AI-92 sells AI-80 and AI-76.

The fueling recommendation is to use only gasoline with an octane rating of 92 or higher

To avoid this situation, you need to choose one filling station, which sells proven gasoline (this can be determined by the reviews of regular customers). It is also important where to fill up the fuel after buying. only metal containers should be used for this (plastic is prohibited).

Preferably, when it is possible to buy gasoline for the grass trimmer of high purity specifically for garden equipment. Then you can be sure of its quality and protection against fakes.

What to choose oil to fill in the trimmer for grass or types of lubricants

Grass trimmers and lawnmowers are powered by two-stroke engines, which have a simplified design. Rarely, but there are trimmer models with 4-stroke motors that run on pure gasoline. Power units of the two-stroke type do not have a compartment for pouring engine oil (oil sump), due to which the weight of the tool is reduced and their cost is reduced. If the rotating parts of the motor will not be lubricated, then eventually they will quickly fail. To prevent this, the grass trimmer is not filled with pure gasoline, but with a mixture of oil. What oil to mix with petrol for the grass trimmer?

To begin with, let’s remember or find out what types of oils by chemical composition are produced:

  • Mineral fluids. they are intended for low-power air-cooled machines. This is the cheapest type of motor lubricant
  • Semi-synthetic substances. they are used for equipment that has air and water cooling
  • Synthetic. suitable for all motor types with different types of cooling. They do not require frequent changes and this type of lubricant is several times more expensive than mineral and semi-synthetic

From the above it follows that the grass trimmer oil with any composition. mineral, synthetic and semi-synthetic. Oils with different chemical compositions differ in price, so rely on the recommendations of the tool manufacturer when buying. The instructions provide advisory information on which types of oil are best to use. If it is standard TC-W3, then it is not so important what composition the substance should have. Mineral, semi-synthetic and synthetic can be diluted with gasoline.

That’s interesting! The main thing in choosing oil is not to get caught on the fake, as today you can very often find different types of lubricating compositions for two-stroke engines, which consist mainly of low-quality petroleum products.

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Grass trimmer for use in the garden

In modern conditions, the purpose of the grass trimmer is to care for the lawn and the area as a whole. Unlike a traditional lawn mowing machine, the grass trimmer has profitable differences:

High mobility. Enables use in hard-to-reach and restricted areas.

Versatility. Depending on the type of vegetation working tools change, allowing you to cut grass of any height and hardness.

Easy design. With timely maintenance grass trimmer does not require regular adjustments, frequent repairs.

When choosing a trimmer for grass, analyze the operating conditions of the unit, which will help to make the right selection on the type and power of the engine.

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Why buy grass trimmers?

Comparing with similar mechanisms, give preference to brushcutters when choosing the following functional indicators:

  • Mobility and low weight of the unit, allowing to carry it over the distance, to use in hard-to-reach places for mowing.
  • Versatility. The lawnmower is equipped with a node for changing the working elements directly during the operation of the unit.
  • Constructive simplicity that allows the lawn mower to be used for a long time without frequent adjustments.

These and other positive features give buyers the confidence that when buying a trimmer for the grass, they are making the right choice.

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Oil Selection Rules

Engine oil depending on its chemical composition can be:

  • mineral. made from petroleum distillates and designed for low-powered, air-cooled machines
  • Semi-synthetic. is a mixture of mineral and synthetic oils and is suitable for 2T and 4T as well as air and liquid cooling;
  • Synthetic. produced on the basis of esters and may be used in heavy-duty equipment, as well as for operation in harsh weather conditions.

important! Oils for two-stroke and four-stroke engines differ in their ability to dissolve, burn and evaporate. In order to distinguish liquid grease from gasoline, it is colored 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-powered equipment with engine displacement up to 50 cm³ and air cooling;
  • TV. for powerful equipment with engine capacity 50-200 cm³ and air cooling system;
  • TC. for powerful two-stroke equipment (brushcutters, chainsaws, lawnmowers, etc.) with engine displacement of 50-200 cm³;
  • TD. for boat engines with liquid cooling.

To choose the optimal oil for your particular model of grass trimmer, it is best to take into account the recommendations listed in the instruction manual. API-TV and API-TC oils are commonly used for 2T brushcutters.

Please note! Also for two-stroke engines there is a JASO classification, and for four-stroke engines still use SAE30.

Leading manufacturers of garden equipment design and manufacture their own oils. Such lubricants best meet all technical and performance specifications of specific trimmer series. For example, you should use STIHL HP or STIHL HP SUPER oil for a STIHL FS 5 brushcutter and Husqvarna 143R should use Husqvarna HP or Husqvarna LS oils. But for the Patriot brand is good enough and the usual mineral oil M-8B.

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Rules of selecting an oil

Depending on the chemical composition, there are different types of engine oils:

  • Mineral. made from petroleum distillates and designed for low-powered equipment with air cooling;
  • Semi-synthetic oil is a mixture of mineral and synthetic oils and is suitable for 2T and 4T as well as for air and liquid cooling;
  • Synthetic. produced on the basis of esters and can be used in high-powered equipment, as well as for operation 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, to distinguish the liquid lubricant from gasoline, it is colored in different colors: blue, green, red.

Depending on the API classification the following groups of oils for trimmer motors can be allocated:

  • TA. for low-powered vehicles with engine capacity up to 50 cm³ and air cooling;
  • TV. for powerful equipment with engine volume of 50-200 cm³ and air cooling system;
  • FC. for powerful two-stroke equipment (brushcutters, chainsaws, lawnmowers, etc.).) with engine capacity 50-200 cm³;
  • TD. for liquid-cooled boat motors.

In order to choose the optimal oil for a specific model of grass trimmer, it is better to take into account the recommendations given in the manual. API-TV and API-TC oils are generally used for 2T brushcutter models.

For your information! There is also a JASO classification for two-stroke engines and SAE30 for four-stroke engines.

The leading companies that make gardening equipment develop and produce their own oils for their machines. Such lubricants best meet all technical and operational features of specific trimmer series. For example, you should use STIHL HP or STIHL HP SUPER oil for a STIHL FS 5 brushcutter and Husqvarna 143R should use Husqvarna HP or Husqvarna LS oils. But for Patriot brand will suit and ordinary mineral oil M-8B.

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Types of brushcutters

Today, liquid profile trading platforms offer a large selection of mechanisms for mowing grass, small bushes. For example, there are lawn mowers with an electric motor, with gasoline propulsion systems. No trimmers equipped with a diesel engine because they are low-revving.

Liquid sales statistics show the advantage of brushcutters with internal combustion engines over their electric counterparts. Electric mower is used in places where there is a fixed electrical network.

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How to dilute gasoline and oil for a grass trimmer for refueling

The two-stroke engines of the tool work at the expense of the petrol-oil mixture, which is prepared in the proportions that are specified in the technical passport of the device. If you ignore the rules of mixing, the garden tool can quickly break down.

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The two-stroke machines work differently from four-stroke engines: the sliding surfaces of the crankshaft and other parts of the machine are not lubricated by the crankcase, but by oil that has been diluted in petrol beforehand. Two-stroke engines have a general rule for preparing a combustible mixture. gasoline is diluted with a certain volume of oil intended for this purpose.

How to dilute gasoline with oil for grass trimmer. step-by-step instructions

Mixing the fuel composition takes into account special proportions.

If you dilute the fuel mixture with an insufficient amount of lubricant, this will cause rapid wear on the parts of the lawnmower

The optimal ratio of oil to gasoline can be found in the trimmer manual. As a rule, it is 1:50, 1:40 or 1:25.

The gasoline and lubricant must first be diluted in a suitable container: Do not do this immediately in the fuel tank. If you ignore this rule, the work of the motor can be inconsistent, as a result of which the tool will quickly fail. To dilute the fuel mixture, you should not use plastic canisters or bottles, as gasoline is able to dissolve this synthetic material. The order of fuel mixing:

  • Pour a liter of gasoline into a container (optimally. a metal canister).
  • Add half of the required oil proportion.
  • Mix the liquids thoroughly, away from open flame sources.
  • Pour the rest of the lubricant into the container and mix the mixture again.
  • Pour the fuel into the trimmer’s fuel tank.

Work must be performed wearing a respirator and rubber gloves. You can use a watering can for easy pouring. Do not keep the fuel mix for more than 3 months, it is better to dilute it as much as you need for the work you plan to do in the nearest future. Always choose high quality oil for mixing with petrol, buy it at the certified gas stations.

Oils and fuel proportions

To calculate the ratio of ingredients for preparing dressing for the grass trimmer, follow the recommendations on the oil package. The standard ratio is 1:50. You may use any quality oil for two-stroke motors.

Mixing rules

And now about how to mix the components correctly. But it would be more logical to begin with analysis of widespread, but totally unacceptable mistakes made by many owners of this mowing machine. The following are considered mistakes in mixing the fuel mixture.

  • Adding oil to the fuel in the brushcutter’s gas tank. It is not possible to obtain a homogeneous fuel mixture in such a way. It might work, if only you shake the grass trimmer for a long time afterwards. But it is unlikely that someone will do it, given the gravity of the machine.
  • Pour oil into the mixing tank first and then add gasoline to it. Gasoline has a lower density than oil, so if you pour it in with the oil, it will remain in the upper layer, that is, there will be no natural mixing. Of course, it will be possible to mix then, but it will require much more energy than if you do it the other way around. pouring oil to the poured gasoline.
  • Ignoring precise measuring tools for taking the necessary volumes of ingredients to use. In other words, diluting the amount of oil or gasoline “by eye” is a bad habit when operating motorized machinery.
  • Use empty drinking water bottles for the fuel mixture. Such containers are made of too thin polyethylene, which may be dissolved by gasoline.

Bearing all the above mentioned in mind we recommend to use the following rules when mixing the fuel mixture for the two-stroke engines of the grass trimmer.

  • Use only clean containers made of metal or special plastic for storing or preparing gasoline, oil, fuel mixture.
  • Use a watering can to pour gasoline into the dilution tank to avoid spillage, and a measuring container with volume markings or a 5 ml and 10 ml medical syringe to add oil.
  • Pouring petrol first into the jerrycan for the fuel mixture and then the oil.
  • To dilute the mixture, first pour only half of the planned volume of gasoline into the container.
  • Then add to the gasoline all the amount of oil required to prepare the mixture.
  • Thoroughly mix the contents of the expansion tank. It is best to stir by making circular motions with a tightly closed container. Do not mix the fuel inside the canister with a foreign object, because you do not know what material it is made of, what kind of reaction it may have with the ingredients of the mixture and how clean it is.
  • add the rest of the gasoline to the stirred mixture and stir thoroughly again.
  • You can fill the fuel tank of the lawnmower with the prepared mixture.

It should be borne in mind that the prepared fuel mixture should not be stored for more than 14 days, as it loses its properties, stratifies and evaporates, which leads to changes in proportions, and thus deteriorates the performance of the grass trimmer.

Consequences of an incorrect ratio

The service life of your MotoGP engine depends on how accurately you adhere to the manufacturer’s recommended oil to gasoline mix ratio. The fact is that the fuel mixture enters the cylinders in the form of petrol-oil mist. And the task of the oil composition is to lubricate the moving and friction parts and surfaces of various parts that are in the cylinder. If it suddenly turns out that there is not enough oil, and somewhere there is not enough oil at all, the dry contact parts start to damage each other. Scratches, scratches and chips will form as a result, which will certainly lead to complete or partial engine failure (for example, it can jam).

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In the opposite case, when too much oil enters the engine, it does not have time to burn completely, settling on the walls of the cylinder and turning over time into solid particles. coke, slag and the like. As you might guess, this, too, leads to engine failure. The most important thing is that you should not allow even a single disproportion to the lack of oil. It is better to overfill a little oil 10 times than to underfill just once. It often happens that this one time is quite enough to break the engine.

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To obtain a fuel mixture, engine oil is mixed with gasoline in certain proportions. These are listed in the owner’s manual. For example, mineral lubricants are mixed with petrol at a ratio of 1 to 35, and synthetic at 1 to 50.

  • pour the exact amount of petrol into the canister;
  • add, using a dosing device, the required volume of oil;
  • close the can with the lid;
  • mix the composition by shaking the liquid.

The prepared fuel mixture is simply poured into the inside of the fuel tank, using a watering can for convenience.

The following table shows proportions of oil and petrol in the composition of fuel. It will allow you to quickly determine the volume of materials to be mixed.

You can store the ready mix of petrol with oil in polypropylene or metal containers for no more than two weeks. Do not store the composition in polyethylene bottles. This is due to the fact that gasoline reacts with the container material, and the resulting products get into the work mixture. Because of this more soot will be produced during combustion.

Add fuel only when the engine has cooled down as little as possible. Do not fill the tank to the top: leave enough room for thermal expansion of the fuel.

Observe the fire and personal safety rules when preparing and pouring the working composition away from the fire sources.

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Changing the oil in a lawn mower with a four-stroke engine

If the engine is not new, the lawnmower oil can be changed about once every 25-50 hours of operation of the tool. Many people consider car oil known you can oil the crankcase again This is an average of 2-3 months of operation. Can you pour car oil into a motorcycle oil in a chainsaw or lawnmower. What oil to put in the lawnmower? Can a single axle tractor be filled with car engine oil? You can also tell how good the oil is without measuring the number of hours you’ve been in it. Just make sure that it does not start to turn black. When this happens, be sure to change the fluid, otherwise the engine could soon simply jam.

Oil Change

Now on to how to change the oil in your lawnmower. The whole process can be divided into several steps:

  • First drain the old oil.
  • Next, the lawnmower is turned sideways (to the side where the drain hole is located) for a few minutes until the used fluid has completely drained out. I recently changed the oil in my car and I didn’t throw the drained oil away. Is it possible to pour it into a lawn mower, because the car engine will be more complicated than the mower, with. Then put the tool back in a horizontal position. A small container for the old oil must be prepared in advance.
  • The lawnmower is then filled with new oil via the filler neck.

At this stage, the oil change is complete. When you pour new fluid into the throat, remember that it must be poured strictly to the specified mark in the crankcase.

Which lawnmower oil to choose?

It is necessary to make that a certain type of fluid and its viscosity directly depends on the temperature conditions in which the tool is used. car oil in the winter period is it necessary to fill the oil in the. So, if the weather is warm (temperature from plus 5 to plus 30 degrees Celsius), it is recommended to use a fluid series SAE-30. In the off-season season, experts recommend to fill lawnmower oil with viscosity 10W-30. 5W-30 fluid can be used in winter. What oil to pour into the fuel mix can be lawnmower for. What oil to fill in the mower It is also worth paying attention to the means Synthetic 5W-30, which by its properties provides reliable operation of the mower parts at relatively low temperatures.

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