How to choose the right gasoline for a lawn mower. Features of refueling and fuel proportions.

What kind of gasoline can be put into a trimmer?

Before determining what kind of gasoline can be poured into the trimmer, it is necessary to define some of the concepts used.

• Trimmers can be with four-stroke or two-stroke engines. Four-stroke trimmers have the most powerful and complex design; engine parts are lubricated by an oil pump. The engine runs on pure gasoline. For squeezing machines. Easier. It is necessary to prepare a fuel mixture consisting of gasoline and oil. This occurs due to the amount of oil in the fuel and the lubrication of the parts rubbing in the cylinder of this engine.
• To prepare the mixture, gasoline of a certain grade AI-95 or AI-92 is required. The grade of gasoline depends on its ignition speed. Octane number. The lower this indicator, the faster gasoline burns and its consumption increases.

Many models of gasoline braids have two-stroke engines that run mainly on AI-92 gasoline. You need to mix the fuel for them yourself. It is better to pour gasoline of the brand specified by the manufacturer into the brush, otherwise the trimmer will fail faster. For example, when using AI-95 gasoline, the engine quickly overheats, and when choosing AI-80, the fuel mixture will be of very low quality, so the engine will operate unstably and consume little energy.

In addition to choosing the brand of gasoline and preparing the fuel for the braid, it is necessary to use a special oil designed specifically for two-stroke engines. Semi-synthetic and synthetic oils are well suited for gasoline scythes. Semi-synthetic oils are in the middle price range and are suitable for such equipment from any manufacturer. , lubricate the necessary engine components well. Synthetic oils are more expensive, but with use, the engine will last longer. In any case, when purchasing equipment, you must carefully read the instructions, because sometimes the manufacturer gives recommendations on the use of a certain brand of oil.

If everything is in order with the electrical equipment, then we check the carburetor.

Vacuum carburetors are installed on trimmers. When disassembling, cleaning or washing it, you need to be extremely careful - under no circumstances disassemble the lower part of the carburetor, where the primer is located. The air filter (it is visible if you remove the protective casing from the carburetor) must be washed with detergents. Best for washing dishes. After drying, put it back. We wash the carburetor with clean gasoline and blow through all the holes with a pump. We also wash the fuel line filter, then dry and assemble everything. Usually, after all the manipulations, the trimmer starts working.

A thin cable instead of a fishing line, is it worth installing it on a brush cutter?

This thought comes to the mind of almost everyone who has had to mow 10 acres overgrown with tall grass. At first glance, the idea seems good. The cable is stronger than the fishing line and does not wear out as much. However, not all so simple.

Fuel mixture fraction

If the mixture is diluted correctly, for example by following the instructions below, the equipment will last more than one year without serious technical damage. In this case, fuel consumption will be low, and the result will be work. Tall. The fuel preparation process should always be the same and constant. It is best to always use the same ingredients without changing the brand specified by the manufacturer.

Don't add too much oil, it can damage the engine, but it's not worth skimping on. To maintain correct proportions, always use the same measuring container to avoid miscalculation. You can use medical syringes to measure the oil, but some manufacturers provide full and scored containers with the oil.

READ How to Wear a Shoulder Strap

The most correct ratio of oil to gasoline is from 1 to 50, where 50 is the amount of gasoline and the amount of oil. 1. For better understanding, let us explain that 1 liter is equal to 1000 ml. Therefore, to get a ratio from 1 to 50, divide 1000 ml by 50, we get 20 ml. As a result, you only need to add 20 milliliters of oil per 1 liter of gasoline. You will need 100 ml of oil to dilute 5 liters of gasoline.

In addition to maintaining the correct proportions, it is necessary to adhere to the technology of mixing ingredients. Under no circumstances should you simply add oil to the gas tank. It is best to follow the following step-by-step instructions.

• To dilute the mixture, you need to prepare containers in advance in which you will mix gasoline and oil. This can be a clean metal or plastic canister with a capacity of 3, 5 or 10 liters to make it easier to count the amount of oil. Do not use drinking water bottles. They are made of thin plastic that can dissolve in gasoline. Use a special measuring container to measure the oil. But if they are not available, then, as already mentioned, medical syringes with high doses are suitable.
• Pour gasoline into the can without adding a couple of inches to the full volume. To avoid spilling gasoline, use a funnel or insert a funnel into the neck of the canister. Then fill the syringe or measuring device with the required amount of oil and pour it into a container with gasoline. It is not recommended to do the opposite. Pour gasoline into oil.
• Close the lid of the bottle tightly and stir the resulting mixture. If some of the fuel spills while preparing or mixing the mixture, immediately wipe the canister with a dry cloth.
• Be sure to follow fire safety precautions. Dilute the mixture away from fire and never leave fuel or used materials out of the reach of children.

Analogs

Among the analogues of the Stihl FS 55, one can highlight the Husqvarna 129R model, which is accompanied by a two-stroke engine with a power of 0.85 kW and a gasoline engine.

The Makita EM2600U lawn mower can be very elegant and easy to use. The device is ideal for mowing weeds and bushes in the local area of ​​the land. Engine power 1.2 hp with an engine capacity of 25.7 cc. cm.

The Hitachi CG27EC brush cutter may be perfect for cutting grass. Thanks to the built-in S-start system, the engine will start quickly, and labor-intensive work will be carried out comfortably. Engine capacity 26.9 cc. see, at a power of 1.1 hp.

Features of refueling mowers

When the mixture is ready and ready to use, it should be carefully poured into the fuel tank. Since gasoline is a toxic liquid, precautions must be taken when handling it. Work should be carried out in calm weather and away from strangers. Also, to fill the tank with fuel, you need to use a funnel or funnel with which you have previously diluted the mixture. Otherwise, the mixture may blur, go unnoticed and ignite when the engine warms up.

The fuel tank itself must be cleaned of external contaminants and only then unscrew the cap to fill the finished fuel. After refueling, the tank should not be left open, as insects or soil may enter the tank, causing the fuel filter to become clogged. Fill the tank with fuel to the specified level or less, and then top up while operating.

READ Stihl Or Husqvarna Brushcutter Which Is Better

The container must be tightly closed during storage. Fuel should be stored in a cool place, out of direct sunlight. Remember that when storing the mixture for a long time, the oil dilutes and loses its properties.

Source

Hi all! Glad to see you again, dear readers and subscribers of Andrew Nock's blog. Anyone who has a chainsaw at home already knows exactly what gasoline is and how to refill it. But for those who just want to buy such a device, the article will seem interesting.

Chainsaw. One of the most convenient and versatile household units. The fuel mixture must be prepared before use. But for proper operation of the device, you must follow all the manufacturer’s recommendations. Each model is different, so what kind of gas should you put in your chainsaw?

Storage recommendations

It is better to prepare the mixture in quantities that should be enough to complete one-time jobs. The problem lies in the irreversible deterioration of the operating parameters of the consistency during storage. It is recommended to use the finished composition over the next few days.

A mixture of gasoline and month-old oil worsens the traction capabilities of the engine. There is also the formation of resinous compounds in the fuel system and saturated carbon formation in the combustion chamber, loss of mobility of the piston rings.

• With the least harm to the property, it is better to store gasoline with oil for less than 2 weeks. At an ambient temperature of 25 degrees Celsius or more, this period is reduced to 8-10 days.
• In order to save money, the expired mixture can be used evenly by mixing it into the freshest composition in an amount of less than 10% of the total volume.

To avoid problems associated with a failure of the fuel system, it is recommended to filter the prepared mixture using a non-fibre material such as suede, or a fine-mesh twill weave or iron mesh.

Under the brand

For modern brands, for example, Husqvarna, Partner, Makita, Echo, Stihl, AI-92 gasolines are suitable. Today, only a huge number of people complain about the premature failure of their chainsaw due to bad gasoline. Therefore, some experts recommend pouring AI-95 into such chainsaws. At the same time, a good AI-95 can “burn the piston”, and again some people find a compromise and mix AI-95 with AI-92. In general, it all depends on the quality of gasoline and ultimately you decide.

For household appliances Ural, Druzhba, it is recommended to take AI-80 gasoline. It is very important that fuel consumption is minimal.

Is it possible to fill in 95 or 98 gasoline?

The manufacturer does not set the maximum permissible octane number for the fuel used in engines. But a higher value than 92 does not mean that the fuel is better, more modern or more efficient. Although usually, in more expensive cars and more complex engines, for example, turbocharged ones, a minimum of 95 is used. Formally, the Premium brand AI-95 is suitable for use as gasoline for a 4-stroke lawn mower.

However, if you fill in such fuel, then during operation you may encounter excessive engine heating and unstable operation. In the future, this can also lead to premature breakdowns and further failure of the tool. This is due to the fact that even large manufacturers of 95 and 98 gasoline legally add additional additives to it, designed to increase vehicle acceleration, make the gas pedal more responsive, improve driving dynamics, or even clean the fuel system. In addition, at factories in the Russian Federation there are limited opportunities to increase the octane number of gasoline using a better refining process. This is another reason for using additives.

All these substances are approved for use in cars. But they are not necessary for lawn mowers, and may even be harmful. They lead to increased formation of harmful carbon deposits on cylinders, spark plugs and piston rings. This is especially true for worn motors or operation under high loads.

Preparation of the mixture: important proportions

When using a two-stroke engine, clean fuel is purchased separately and mixed with oil, often in a ratio of 1:50. It is strictly impossible to install an oil pump in such an engine, so it is strictly prohibited to pour pure gasoline into the chainsaw! Proportions, quantities and some brands of the manufacturer are indicated in the instructions for use.

Important points during the cooking process:

• Domestic chainsaws work with oil M8-V, M-12TPU, M8-V, TP, MGD-14M. In some cases you may want to use foreign options;
• Proportions: 2.5 liters of FI-80 gasoline per 100 grams of oil;
• Foreign models are characterized by minimal fuel consumption. They work on foreign oils, and their proportions are 1:40 or 1:50.

Is it possible to fill in 76 or 80 gasoline?

Of course, the outdated brand of AI-76 fuel, which many Soviet cars successfully ran on, can no longer be found on sale. And the AI-80 standard that replaced it is now practically never found at gas stations. With the country's transition to the Euro-3 environmental standard, the production of these brands has decreased significantly. However, there are old trucks and cars that continue to be fueled with this fuel in our country.

If you were suddenly able to get somewhere 76 or 80 gasoline for a lawn mower, then there is no need to take risks and use it in your equipment under any circumstances. This is almost guaranteed to lead to engine failure, since the fuel of these brands has low technical characteristics, poor resistance to detonation and leads to other problems.

Fuel mixture

To properly prepare fuel, you will need a list of additional tools:

1. Plastic or metal container for diluting the substance;
2. Measuring bottle for gasoline;
3. Spray;
4. Syringe;
5. Funnel for pouring the chainsaw into the tank.

Some manufacturers, such as Stihl, make measuring tanks out of the box to make it easier to measure the fuel mixture.

Different manufacturers produce oils in different colors. The manufacturer HP produces red liquid. Green oil is the premium segment of “synthetics”. For your Husqvarna chainsaw, you need to use the appropriate brand of oil. It has high value, good quality and is green or blue in color.

You will need the above accessories to mix the ingredients. Also on sale you can find special canisters with two holes for oil and gasoline. Everything is very simple here, pour in the ingredients, tighten the lid and mix by tilting the container. You can use glass and plastic bottles.

READ Gasoline Proportion for Trimmer

Water or dust must not get into the fuel mixture.

Lightweight devices

Shtil company offers both household and professional devices. The price of the product depends on its technical characteristics. In addition to the standard equipment specified in the model descriptions and detailed instructions, additional accessories for various jobs are always offered.

Light models include the Stihl fs 38 lawn mower. Its fuel tank capacity is small - 0.33 liters, which provides about half an hour of continuous operation. The power of 0.65 kW allows you to easily mow young and already grown grass. The working tool is a mowing head with a fishing line. The head rotates 260 degrees, allowing you to treat lawn edges near borders and narrow strips of grass between flowers. This is a lightweight - 4 kg, and maneuverable device for flower beds. It is shown in the photo.

• Model fs 55, slightly more powerful - 0.75 kW with the same fuel tank volume. Comes with a blade for cutting grass. This option can successfully control weeds – but not dead wood or long-grown grass. The device weighs more - 5 kg, and is equipped with a two-handed handle. Care and replacement of knives are described in detail in its instructions.
• The fs 55 has a modification with a mowing head - 55 R. Here the handle is round, since the device is designed for maneuvering between flowers and bushes.

Semi-professional models

This includes trimmers that feature both more powerful engines and larger tanks.

• The first in the series is the FS 70 CE model. With such a tank volume, it has a higher power - 700 W. Supplied with trimmer head and cutting knife. The device allows you to mow young, overgrown grass and weeds; it is optimal for those cases when you need to tidy up an abandoned, albeit small, lawn. Its price is the lowest in this category.
• Petrol mower Stil fs 130 – with a light weight of 5.9 kg, it has a high power of 1.9 kW. The product kit includes a mowing head, a cutting knife with three blades and a cutting toothed disc. Replacement of elements is described in the instructions. The high power of the device allows you not only to cut grass and remove weeds, but also to fight reeds, dead wood and safely trim young shrubs. This universal option is suitable for both large lawns and areas with wild grass. Judging by the reviews, the model is one of the favorites.

The fs 250 is characterized by lower power - 1.6 kW, but a larger fuel tank - 0.64 l. The set includes a trimmer head and a cutting knife with two blades. The petrol mower is used for cutting grass, removing dead wood and young bushes. Thanks to the larger tank, it is heavier - 6.3 kg, but also lasts longer. This device is more suitable for processing large areas, such as a sports field.

In the video you can see how the devices work.

Good to know

Fuel needs to be prepared, counting on 3 refuelings. After all, storing large amounts of fuel can negatively impact the performance of your chainsaw. The mixture may behave differently because it will depend on many factors. As a result, your device may be seriously damaged, which will incur financial costs.

Sometimes even the reservoir can affect the quality of the liquid. Plastic and glass react with gasoline, which can create a risk of sudden fire.

The finished liquid cannot be stored for more than a month, as the oxidation process occurs. After operating the chainsaw, use up any remaining fuel, turn off the engine, and remove any remaining fuel mixture.

Types of motor oils, their purpose

Motor oil is a special formulation of solvent and additives that reduce friction, create suitable fluidity, and prevent thickening as temperatures drop.

According to the method of obtaining the composition there are:

• minerals acquired during the distillation of oil;
• synthetic – by synthesis or processing of natural gas;
• semi-synthetic – improved mineral oil due to the introduction of synthetic components.

For safety reasons, so as not to confuse the products, the oil is colored reddish, blue or green. The assortment differs in composition; the user must purchase oil marked: “for garden equipment” 2T, if it is necessary to prepare a mixture for a two-stroke engine

, 4T for filling into the crankcase.

Synthetic and mineral oils have different bases and cannot be combined. When switching to another type of oil, the system must be thoroughly washed.

Oil

for lawn mowers should be classified according to vehicle oils created for engines

with air cooling with a combustion chamber volume of 50-200 cm 3 When choosing a product, the fundamental parameter is not the cost, but the protective characteristics for a motor of a certain brand. Therefore, first they purchase the recommended oil, and if it is not available, they select one that is similar in terms of performance.

The alkaline number determines the quality of lawn mower oil. Alkali neutralizes the oxidation process of rubbing materials and slows down the destruction of the surface. When oil becomes oxidized, it loses its protective properties. The usual pH of oil is 8-9 units.

The main indicator is viscosity. That’s why there are winter, summer and all-season oils. What oil

For a lawn mower, it depends on whether the user will work at sub-zero temperatures. Summer oils thicken even with slight cooling. The flash point indicates how quickly the oil will burn out of the composition. Features of fuel for two-stroke engines and classification of oils. Practical advice on how to dilute gasoline with trimmer oil. It is normal if this indicator is more than 225 C.

Fuel consumption

One of the most important questions that tool owners have because everyone wants to know what to expect.

The volume of almost all containers is approximately 500 ml. If the power of the chainsaw is 2 kW, the consumption of the fuel mixture will be approximately 1.2 liters per hour. Simply put, such a tool can work at maximum speed for half an hour without interruption. If the chainsaw is not as powerful, its tank capacity will be smaller. Thus, the user can independently control fuel consumption.

Over time, the user will learn to operate his instrument without outside help. The main task will be to maintain the business unit in good working order using high-quality fuel mixtures. Follow safety precautions when preparing flammable liquids. This will help preserve the instrument and not harm yourself and the environment.

How to choose oil to lubricate a chain or motor

Stihl has developed a whole line of lubricant mixtures for two-stroke engines. High cleaning ability will improve the environmental friendliness of using your tool.

All synthetic oils are made on the basis of primary raffinates, which can reduce the amount of emissions and prevent damage to the moving elements of the chainsaw during continuous operation.

STIHL HP oil

- made on a mineral basis and has excellent combustion and lubrication properties. Available in various volumes from 20 ml to 55 l.

HP Ultra Oil

- Suitable for long-term use of the tool. Ensures complete combustion of the fuel mixture and thoroughly lubricates the necessary components. It has a high degree of decomposition - more than 80% in 21 days.

Engine oil SAE 30

— used for any operating conditions in the garden. Helps reduce fuel consumption and is characterized by high-quality base oils.

Helpful Tips:

1. Sometimes it's better to add a little oil than to regret it. If you give a little more oil than indicated in the instructions, then nothing bad will happen. Soot formation is possible with large quantities of oil and if certain proportions are not observed;
2. It is better to store the finished mixture for a month or less, because for some reason it will lose its quality;
3. Proper shutdown. Be sure to use or drain the contents of the tank so you can continue to use the rubber and plastic seals;
4. Do not use moped oil for chainsaws as it is designed for low speeds.

The correct operation of the equipment is entirely up to you. First, do not ignore the manufacturer's labeling or, at least, the instructions on the oil packaging. This will help avoid unpleasant situations. The neighbor does not always know what is best to do. Cheap oil and gasoline are not an indicator of high quality, because tool failure can be much more expensive (about 80% of the cost of a chainsaw) than the money saved on the fuel mixture.

Petrol mower Shtil FS155. Trimmer technical specifications, model description, maintenance

Trimmer Specifications

Description of the lawn mower model

The lightweight petrol brush cutter STIHL FS55, fully equipped with a knife and a spool of fishing line, will perfectly perform trimming in a summer cottage, and can even cope with denser thickets of weeds in the form of reeds, perennial plants with thick stems, and matted grass.

• Thanks to the included mowing head, it is possible to mow grass near obstacles.
• Equipped with a disc with 2 cutting steel edges, it allows you to mow tough vegetation.
• The ergonomic two-handed handle is adjustable in three positions, providing the necessary level of comfort when working in large areas.
• The Stihl brushcutter is equipped with an anti-vibration system and a special easy-start system.
• It is very convenient to operate a manual fuel pump: by pressing a button, the operator pumps the required amount of fuel mixture into the carburetor, which reduces the number of starting jerks and makes starting easier.
• For comfortable and safe work, the basic configuration of STIHL FS55 lawn mowers includes safety glasses and a special shoulder strap.

Features of operation

The FixCut 25-2 mowing head is used for regular grass cutting, while the semi-automatic AutoCut 25-2 attachment is excellent for mowing hard-to-reach areas. The process of adjusting the cutting strings is performed automatically. The steel blade GSB 230-2 ensures mowing of tough grass.

The STIHL FS55 brush cutter is demanding on the quality of gasoline and oil. They use branded gasoline no lower than AI-90 and original STIHL oil, which guarantees a long service life of the gas trimmer. The fuel mixture is prepared in the proportion of 50 parts gasoline and 1 part STIHL oil.

When using other brands of motor oil, the concentration is different - 1:25. It is not recommended to store the fuel mixture for more than 2-3 months due to oxidation and loss of properties.

Operating instructions for the Shtil FS55 lawn mower

Download STIHL FS55 Owner's Manual

Advantages and disadvantages of the FS55 model

The big advantage of the Shtil FS55 lawn mower is its operational reliability, high performance, and ability to perform significant volumes of work. Running in the scythe is simple - just do not overload the engine during the first 2-3 refills of the fuel tank. Subsequently, after 5-15 full refills, you can reach full power.

The disadvantages of the Shtil petrol trimmer include some problems with starting.

To avoid this, you should always check that the fuel tank is full and carefully read the step-by-step factory recommendations for proper starting.

It is important to take into account the specific settings when working at different altitudes above sea level - in mountainous and flat areas, since the degree of enrichment of the combustible mixture may be affected due to different degrees of oxygen saturation of the air. Starting and operating the STIHL FS55 lawn mower. Starting and operating the STIHL FS55 lawn mower

Starting and operating the STIHL FS55 lawn mower

How to change the coil in a Shtil FS55 brush cutter to a knife

Model description

The Stihl FS38 petrol mower is the lightest mobile version with a power of 0.9 hp and is intended for domestic use.

• Thanks to a modern electronic ignition system, reliable starting and uninterrupted operation of the engine is ensured.
• Using the fuel pump, the operator has the opportunity, if necessary, to pump fuel into the carburetor.
• Optimal maneuverability is ensured thanks to the D-shaped handle, with which it is convenient to control the Stihl lawn mower when working in difficult areas.
• All control levers are located on a special multifunctional handle (R), which ensures safe and reliable operation of the gas trimmer.
• Thanks to the AutoCut C5-2 mowing set, the cutting diameter is 380 mm.
• An ergonomic shoulder strap allows you to hold the Stihl lawn mower on your shoulder and rationally coordinate movements during operation.
• Light weight (4.1 kg), small dimensions, rational basic equipment - thanks to these characteristics, the STIHL 38 lawn mower is extremely comfortable to use.