Gasoline to oil ratio for grass trimmer table. The first run-in of the lawnmower

Hello! I bought a Prorab 8406 1 grass trimmer. How do you dilute petrol with oil correctly and in what proportions?? I couldn’t find original Prorab oil, so I bought Hungsvarna HP. In the manual to the trimmer says of third party oils can be used oils class SAE MIF\4, API TC-TB. Using different oil does not change the proportion of fuel mixture. Standard mix ratio 1:25. But in a specialized store “specialist” who sold me the oil Hungsvarna HP strongly advised to dilute the oil in 1:50 (as written on the oil). Question: if the instruction says to dilute oil to 1:25, and on the oil is recommended 1:50, then in what proportion dilute? How much is 1:25?? 40 ml? I can’t block the engine if I use 1:50? 2. How to properly run-in the engine? There is nothing in the manual other than start up and shut down. Maybe you don’t need a running-in period? I read that there are grass trimmers that you can work with immediately after purchase.

Is it necessary to lubricate the gearbox before use or is there factory lubricant already in it?? Hope for your help, thanks!

1) Petrol is diluted with oil ALWAYS in the proportions indicated on the oil can! You can use any two-stroke engine oil (cordless trimmers, chain saws, etc.) with your 2-stroke motor.) You can use any two-stroke engine oil except for 2-stroke boat engines. It would be nice to use oil from a legitimate store where you are unlikely to buy fake oil. Husqvarna or STIHL oil is best. STIHL oil must have a sealed neck. beware of counterfeit products. There is a risk of damaging the piston right away. 2) There is no running-in of two-stroke products! PLEASE REMEMBER THIS! All two-stroke products are high-speed and like to work exclusively on full throttle! No half gases are allowed! It causes incomplete exhaust and clogs the piston walls with oil deposits. The consequence is scuffing of the piston. So full throttle and every 25-30 seconds do a 1-2 second throttle dump to give the product a break and return to normal temperature. 3) Gearboxes on direct driveshaft brushcutters must be relubricated every 20 hours. Oil comes out of there naturally during operation. This is done to keep dirt, dust, etc. out of gearboxes with the grease. д. So if you don’t want to end up with a gearbox replacement, fill it with special gearbox grease every 20 hours. It is not complicated and the whole operation takes no more than 3 minutes. Tubes of grease are sold at every garden equipment store and cost between 100 and 300. 1 tube is enough for 3 years- The concept of running-in tools is reduced to work with incomplete load during the first two or three tanks of fuel. For example, when mowing thin, low grass, or cutting dry, undersized wood. Never run the machine through several tanks of fuel while it is idling. As a result of such running-in on the cylinder windows, on the piston and in the muffler carbon deposits are formed, negatively affecting the life of the engine.

A grass trimmer, or lawn mower. a tool you can’t do without in the household. The engine’s reliability, efficiency and longevity depend on many factors.

For example, the quality of fuel. This means that it is necessary to choose the right oil for grass trimmer, to observe the proportions when adding it to gasoline and the rules of refueling the device.

Preparing the right fuel mixture

Before you start running in a new lawnmower engine, you also need to mix the fuel right. As is known for two-stroke engines, it is prepared from special two-stroke oil and gasoline, taken in certain ratios. You can find out the proportions by referring to the instruction manual that came with the tool or on the label of the lubricant. You can read the instructions to find out what kind of fuel to use and what kind of oil to use.

Prepare fuel in small quantities, just enough for one cut of grass. Use special plastic canisters for fuel or separate glass or metal containers. It is best to use a medical syringe to collect the oil.

When getting ready to test drive a new lawnmower, many people have trouble with the fuel mix. There is a discrepancy between the tool manufacturer’s manual and the engine oil manufacturer’s manual. The former recommends a ratio of 1:25. The latter recommends 1:50. Who to trust? What to do?

According to experts, if the manufacturers write the proportion 1:25 or 1:30 in the instructions to brushcutter, then most likely it’s either a cheap tool with poor cooling, or the manufacturer does not know what oil will add the consumer. But here it should be understood that an excess of lubricant does not affect the performance of the grass trimmer in the best way. Excess oil doesn’t burn out completely when the engine is running. It cokes and clogs up the cylinder and piston.

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What to do in this situation when running in a new tool? It is ideal to buy the oil that the mower manufacturer recommends. In the case of running-in engines, when you cannot buy the recommended oil, it is better to buy a good Husqvarna two-stroke oil for the gasoline-powered tools of the same name. It’s not cheap, but it lasts a long time. It is necessary to mix it as it is written in the instruction on the can.

Remember, it is best to use the oil manufacturer’s recommended oil ratio. But whether the proportion that is written on the mower is suitable, it is better to find out by experimenting. If at the proportion recommended by the manufacturer of the grass trimmer, the engine is snotting oil and you can see leaks on it, then the proportion should be increased.

Choice of lawn trimmer oil

For trimmer engines, select air-cooled 2T oils for engines with displacement between 50 and 200 cm3

The first thing to pay attention to when buying oil is not the price, but the protective properties of the material, because a small savings can later become a real headache for the owner and, as a rule, a big expense

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The main factor determining the quality of grass trimmer oil is the alkali number. It is this component that prevents oxidation of rubbing parts and slows down their degradation. During operation the oil gradually loses its alkalinity and becomes oxidized. The optimum oil PH value is 8-9.

Trimmer oil viscosity also has a big impact on how a petrol tool works. This figure determines the ability to operate a grass trimmer in different temperatures. For example, summer brands of lubricants thicken even at a slight drop in temperature. Since the lawnmower is used exclusively in the spring and autumn, summer grade oil is a good choice.

The flash point of grass trimmer oil must be more than 225C, otherwise the oil will burn out quickly and the piston group will be subjected to intensive wear and tear.

What to pay attention to when choosing oil?

Modern brushcutter two-stroke engines are filled with a mix of AI-92 gasoline and 2T oil. Use of fuel with a higher octane rating will cause the flash point to rise, resulting in grease burnout.

Undoubtedly, the best oil for grass trimmer is recommended by the manufacturer, but the owner is not always able to buy exactly “proprietary” lubricant. Experts recommend Shell Helix Ultra, based on Pureplus technology, which improves the basic properties of the lubricant.

STIHL HP Ultra, STIHL HP, STIHL HP S oils should be used for gasoline trimmers by the German manufacturer STIHL. A budget substitute can be products of Vityaz, which by its properties is the most similar to the recommended material.

Choice of recommendations

It is best to lubricate the 4-stroke lawnmower engines with a special oil designed for them according to the ambient temperature the equipment will be used in. For example, special 10W40 and SAE30 oils are suitable for four-stroke mowers according to their operational parameters and may be used at ambient temperatures between 5 and 45 degrees Celsius.

These oils are recommended as optimal lubricants, taking into account the seasonal operation of lawnmowers. It’s unlikely that anyone would get the idea of “starting” a lawn mower in sub-zero temperatures outside the window.

In the absence of specialized oils other grades of automotive oils can be used. These can be SAE 15W40 and SAE 20W50 grades, which are also used at positive temperatures., But only their threshold is 10 degrees below specialized (up to 35 degrees). And also for 90% of the four-stroke mower models available, SF-oil will work.

The engine oil container for a four-stroke lawn mower should be labeled “4T”. Synthetic, semi-synthetic and mineral oils can be used. But most of the time they use semi-synthetic or mineral because synthetic oil will be very expensive.

And so you don’t have to guess what oil to put in the engine of your mower model, it’s best to study the manual. Specifies the type of oil needed and the frequency of change. It is recommended that only oils specified by the manufacturer be used before the warranty repair is completed in order to maintain the warranty issued. And then you choose something more accessible, but, of course, not inferior in quality to branded oils. Don’t skimp on oil quality.

How often should I change the oil?

As noted above, the instructions for using garden equipment with a 4-stroke engine should specify the frequency of oil changes. But if there are no instructions, they are primarily focused on the number of hours of operation of the equipment (hours). You should change the engine oil every 50 to 60 hours.

However, if the area is small and you can’t treat it for more than one hour, it’s unlikely that your lawn mower will run even half an hour out of normal throughout the spring and summer season, unless you turn it in to your neighbors. Then the oil must be changed during the preservation of the equipment from fall to winter.

Changing oil

Changing the oil in the lawnmower engine is not as complicated an operation as, for example, changing the oil in a car. This is much easier. The algorithm works like this.

  • Prepare enough fresh oil to change. Usually the lubrication system of many lawnmowers is filled with no more than 0.6 liters of oil.
  • Start the machine and let it stand for a few minutes to heat up the oil to make it more fluid. This promotes better drainage.
  • Shut off the engine and place an empty container under the crankcase drain hole to collect the waste oil.
  • Unscrew the drain plug and let the oil drain out. It is advisable to tilt the appliance (if possible or desirable) towards the drain.
  • Screw in the plug and place the machine horizontally.
  • Open the filler hole on the oil tank and fill to the proper level, controlled by the dipstick.
  • Tighten the tank cap.

This completes the oil change process and the unit is ready to use again.

What oil should not be added?

Do not fill with a four-stroke lawnmower engine designed for two-stroke counterparts (such oils are labeled “2T”). However, the reverse cannot be done. In addition, it is unacceptable to fill liquid stored in plastic bottles from drinking water.

This polyethylene is not designed to contain aggressive substances, so a chemical reaction is possible, which affects the properties of both the lubricants and the polyethylene.

Varieties of material

Oil. the name is rather conventional. It is an oil base with a variety of additives. Its lubricating properties are not very good without it.

According to the origin of the basis is divided into two types:

  • mineral. obtained by refining of petroleum. its properties depend on the composition of the initial raw material and are not stable, that is why a lot of different additives are added to the mixture. Despite their effect, it is recommended to replace the mineral material as often as possible;
  • synthetic. produced by directed synthesis. The properties of the mixture are predetermined, characterized by stability. Synthetics last longer and need to be replaced less often.

Additives added to the base, give different additional properties to the ready mixture:

  • antioxidant. prolongs the “life” of the mixture itself;
  • Corrosion inhibitors. protect the engine from rusting;
  • anti-wear. reduces wear and tear on the parts;
  • ternium modifiers and so on.

Choosing the right fuel

Most lawnmowers use gasoline. There are also diesel brands, but we will not talk about them in this article. The following grades of petroleum products are sold at gas stations:

Mark H-80 is out of production, it is seldom used. The octane number (the number after the letters) indicates the resistance of the fuel to detonation. The higher the value. the greater the resistance to self-ignition during compression. Gasoline AI-92 is more prone to detonation than AI-95. When manufacturing lawnmower motors, the manufacturer takes into account the resources of the parts and the maximum allowable detonation. The instruction manual of the tool specifies what gasoline to use.

Compliance with the recommendations increases the life of the lawnmower. If you fill the gasoline with a lower octane number than that specified in the passport. piston group will quickly break down. Using fuel with a higher value is also detrimental to the engine. In Russia there is no way to increase the octane rating by improving the oil distillation process. That is why oil refineries add chemical additives to fuel. Resistance to detonation increases, so does combustion time. The result is soot on spark plugs, rings and cylinders.

Unleaded gasoline is recommended for use with gardening 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. See manual for individual recommendations for your tool. Fill the canister with the correct amount of fuel at the filling station. It is desirable to take a metal: in such a container does not arise static electricity from friction, which increases the safety of use.

Use brand name two-stroke oils, preferably API-TB or API-TC. The manufacturer’s recommended brands should be listed in the tool’s instruction manual. Also take into account 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 weather. Semi-synthetic. these are mineral oils with improved qualities, versatile for any season. Please check the temperature rating on the packaging. Also pay attention to the volume. What matters is not the proportion of gasoline and chain saw oil, but how much fuel mixture you will need for one filling and how often you will work with the tool. If you have a grass trimmer or chain saw in your arsenal, and you 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 for the dacha season it is enough to take a bottle of 1 liter.

Mixing oil with gasoline

When you start working with a tool, the question always arises, 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.е. there is 100 ml of oil for every 5 litres of fuel. Why it is important to maintain the correct proportions? It is important to remember that the ratio is 1:50. Excess oil creates soot deposits on pistons and spark plugs, and insufficient 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 measure chainsaw oil and gasoline is with the graduated measuring jugs. They have a scale with marks on them, which is easy to follow. Before pouring in the gasoline and oil, make sure the container is clean. Avoid getting any water or dirt in your system. it can affect the quality of the fuel mixture. First pour gasoline to the proper level, then pour oil to the proper level. To mix them, tilt the container several times. 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).

Important to Know! Never use plastic drink bottles for storing and mixing fuel mixture. Gasoline corrodes plastic. Even if the walls of the bottle seem to be intact, harmful components will get into the fuel mixture and together with it into the engine. It is very bad for the carburetor.

It is recommended that you wear gloves to protect your hands from gasoline and oil. Also remember the elementary rules of fire safety. Do not mix liquids outdoors so that gasoline fumes will not collect indoors. Do not smoke when working and avoid other factors that can cause ignition of fuel and lubricants.

The fuel mixture you have prepared should be poured into the fuel tank and the cap should be sealed tightly. If you have more gasoline than you can use at one time, empty it into a separate can for storage or leave it in the mixing tank. Bottom line. make sure the cap is tight. The mixture can be stored for two weeks and used for refueling without risk for the engine. The only condition is not to leave it in the tank. If the tool will not be used for a long time. use up the leftovers completely or drain.

Now you know how to dilute gasoline for a chainsaw so as not to damage the engine. Try to do it yourself. After you prepare the fuel mixture several times, it will be clear what amount of components will be needed, so that there is no excess mixture. You can buy everything you need in our online store. With brand-name oils, your tool will last a long time.

Choosing the right oil for your chain saw

Two-stroke engines can be fuelled with a mix of unleaded petrol and 2T oil. You should use the recommended gasoline AI-92. If you use a brand with a higher octane number, the flashpoint and combustion temperature will be higher, the valves will burn out prematurely. This is also valid for the oil. Recommended compound is not the most expensive. But it is not permissible to use a different brand. The viscosity will change, it will lead to insufficient lubrication of conventional products made without high-precision lapping.

If too much oil is added, incomplete combustion will result in fouling and excessive exhaust emissions. A rich mixture is bad for the engine. For a four-stroke engine, oil is added separately from gasoline. It washes components, cools, reduces friction. The oil gets contaminated during operation and must be changed after 50 operating hours. The oil type for the lawnmower can be found in the Instruction Booklet. The composition should be marked 4T with a viscosity of 10W40.

The recommended oil is the best oil for each engine. However, the world famous oil is Shel Helix Ultra. Company spent 40 years developing new technology to produce synthetic oil from natural gas. The Pureplus technology allowed to receive an improved composition of base oil. Its basis, with addition of the necessary additives, is used by the leading manufacturers to produce the recommended oils for their equipment.

The choice of oil depends primarily on the manufacturer’s recommendation. So, only brand-name oil is used for the engines. The same oil is suitable for the brand Vityaz, because the engines in brands of the same brand. There is an opinion of experts, the oil of any manufacturer, designed for one type of machinery, is suitable for use on all brands. But if there is a possibility, it is better to use the recommended one.

It is necessary to have oil in stock for one season. A product that has stood for a long time loses its properties. Available in packages from 0.1 to 5 liters.

The path of oil recommended for. The company has no production facilities, only a bottling plant. Products bought in bulk are poured into small containers, labeled and supplied to the trading network. Possibly exclusive Husqvarna additives were added to the oil at the manufacturing stage.

Using oil, according to the instruction manual for your brushcutter, is a must. Equipment cannot work on pure gasoline.

Lawnmower oil dosage. video

To keep your chainsaw in good working order and prevent repair problems, it is important to mix the fuel right. Internet forums are full of questions on the subject. We have interviewed experts and made a short instruction.

For the preparation of the fuel mixture use gasoline AI-92 or AI-95. A lower octane rating will not work. Always use lead-free gasoline (otherwise the engine will be inoperable) and not old (the octane rating can change over time). Do not use oil for boats or four-stroke engines.

Do not mix petrol and oil in strict proportions. Choose API-TB or API-TC synthetic air-cooled two-stroke engine oil. Do not skimp on ingredients. Ask for the brands with the best quality in the stores. For example: STIHL, Husqvarna, NANOTECH, Champion, ALCO, etc.

The main issue is the proportions. Too much oil causes soot deposits on pistons and spark plugs. Excessive gasoline will cause burrs on pistons and rapid engine damage. Mix on average one liter of gasoline with 20-50 ml of oil. STIHL and Husqvarna, for example, recommend 100 ml per 4 liters of gasoline. The above ratio is ideal for chain saws up to 1.5 kW. For chain saws over 1.5 kW, use a ratio of 1/50 (100 ml of oil to 5 liters of gasoline) for the same brands. Recommendation of Partner and Jonsered: Proportion 1/33 (3.3 L of gasoline 100 ml of oil). Super synthetic oil is added at the rate of 100/1. These figures are approximate. Always use the information in the manual of your chain saw. Give less credence to the numbers on the oil labels.

What to mix it in? On sale are jerrycans with measuring divisions and two holes. for oil and gasoline. Pour ingredients, screw on caps, and mix by tilting the container.

Many people use glass and plastic bottles, baby horns and syringes. Be careful with glass and plastic, beware of static electricity. Make sure there are no solids or water droplets in the mixture. Be sure to mix the mixture thoroughly.

Ready fuel should not be stored for more than 25-30 days, t.к. the oxidation process changes its composition. Engine failure caused by overfueling is considered nonwarrantable. Repair costs up to 80% of a new chainsaw. After the season is over, use up the remaining fuel, turn off the engine, and remove the remaining fuel mixture.

Remember, your goal is to create a mixture that will ensure trouble-free engine operation, complete combustion without the formation of soot, smoke or scuffing.

What is the gasoline-oil mixture for two-stroke engines?? Two-stroke engines in various motorized machinery work on the basis of petrol and oil mixture. If properly prepared and balanced, they work long and trouble-free. On the contrary, when operated incorrectly, various technical problems arise. The main reason for such situations is the wrong proportions of fuel mixtures. Partial or complete lack of oil in the fuel tank also causes malfunctions.

The fuel is prepared using a special oil mixture designed for two-stroke engines. Although two-stroke engines often have different purposes, ranging from gardening equipment to boat engines, the way fuel mixtures are prepared is much the same.

Two-stroke engines in various motorized equipment operate on the basis of a fuel mixture of gasoline and oil.

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