How much oil do you need in a lawn trimmer

Lawnmower oil requirements

The engines in small farm equipment are different from automotive engines, so the lubricant must also be different. Filling the mower with a mixture designed for cars or motorcycles is not allowed: it could cause a breakdown. Even if there are no malfunctions, the lawnmower is likely to start working worse: a fluid that is not intended for this type of equipment will not be able to perform its functions well. Therefore, it is recommended to use special oils designed for garden equipment.

Suitable oil and gasoline for filling a 2-stroke engine

Two-stroke gasoline engines are designed to run on a fuel mixture. The oil in the lawnmower is not replaced separately, it is proportionally mixed with gasoline. Only a properly prepared fuel mixture should be poured into the engine system.

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To fill up the oil according to the principle “the higher its price, the better it will be for the operation of the mechanism” is impossible. Suitable for 2-stroke engines varieties of oil compositions on how they are obtained are divided into the following groups:

The basis determines the lubricating properties of the material, its ability to remain liquid at lower temperatures without significantly increasing the viscosity at the same time. The lubricant’s composition includes about 5-15% of various additives. They are intended to increase the practical efficiency of the machine in use. The additives allow:

  • slow down the corrosion of metal surfaces associated with redox reactions;
  • to increase the thermal resistance of the parts;
  • stabilize the viscosity index of the substance at the same level when temperatures change within a certain range.

Lawnmower manufacturers indicate in the owner’s manual the lubricant brand that is best suited for the machine in question. If it is difficult to obtain it, it is possible to change the oil to a similar composition intended for 2-stroke combustion engines. The viscosity level should always correspond to the value recommended by the manufacturer.

Gasoline is the main volume component in the fuel mixture. Its brand should correspond to the one recommended in the instruction manual of the lawnmower. The higher the octane rating of the gasoline, the longer it burns.

If you use gasoline of a higher brand than recommended, the two-stroke combustion engine will fail faster.

Instructions for running-in and operation of a 4-stroke engine

Air-cooled, four-stroke gasoline engines are widely used in park and garden equipment. power blowers, power tillers, lawn mowers, snow blowers, motor pumps, mini-tractors, on construction and road-building machinery. Gasoline generators, vibratory plates, vibratory rammers.

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Before using your engine, READ THE OPERATING INSTRUCTIONS FOR THE OPERATING INSTRUCTIONS OF THE ENGINE. Many buyers, unfortunately, do not do this. That is why the most elementary questions about engine use arise.


First: What kind of gasoline to use.

We recommend using clean, fresh, unleaded gasoline with a 92 octane rating. Air-cooled engines are not designed for AI95 and AI98. In the 95-th and 98-th gasoline contains additives, which are destructive to the engine piston system, leading to overheating and damage.

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Do not mix oil with gasoline. This can cause engine malfunctions that are not covered by the warranty.


Second: What oil to put in the engine crankcase.

Many people consider automotive oil of well-known brands to be the best for use in engines for a power tiller (power tiller, snowmobile, electric generator, motor pump, etc.).д.). This is absolutely not true. Car oils are designed to work in water-cooled engines, not air-cooled. The boiling point of automotive oils is lower than that of oils that contain special additives for air-cooled engines.

Use oil with quality grade SF, SG, SH, SJ, CD or higher. Do not use oil additives. Select oil viscosity based on ambient temperature.

SAE 30 (5C or higher) is recommended for temperatures above 5C. May be difficult to start if used below 5°C.

10W-30 (-18 to 38C) is recommended for variable temperatures. This oil provides cool-starting for the engine, but may increase oil consumption at temperatures above 27°C.

Check the oil level more often in hotter temperatures.

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Synthetic 5W-30 (-30 to 40C). Synthetic, enables engine to operate over the entire temperature range, with easy startup and reduced oil consumption.

5W-30 (5C and under) is recommended for winter conditions.

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Always check the oil level. The level must be at the last thread of the filler neck in the horizontal position of the engine (as shown in the picture). The fill and drain ports are on the front and rear of the engine.

On lawnmowers, pay attention to the dipstick. marks on the dipstick of a vertical shaft engine.

The crankcase volume differs from engine to engine. If you have a 4, 5.5, 6.5, or 7L engine.If it is a dual-shaft engine, 600 ml is to be injected. oils. In 7.5L engines.с. 900 ml is poured. In engines with 8, 9, 11, 13 and 15 liters.с. 1.1litre respectively.

Third: starting the engine.

When an engine is started for the first or cold start, there is increased stress on the piston system. High RPMs can damage the engine. Therefore, start the engine at 1/3rd of the throttle position. Run in at a moderate rpm.

Fourthly: How do you run-in the engine?

Air-cooled engines “do not like” idling. Start the engine and warm it up for 1-2 minutes. and run in operation. During the test run, always try to maintain a load of 50-75% and take breaks of approx. 20-25 minutes. After a break when the engine has cooled down (15-20 min.after a break in the engine cool down (remember also gasoline enters into the crankcase), you can restart working again. In such a mode the engine should work the first 4-5 hours, after which you must necessarily change the oil. Running-in period is over.

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Main causes of engine failures

REMEMBER. Engine breakdowns are mainly caused by improper operation.

First cause of damage: fuel cock that is not closed.

When the engine is not running and the fuel cock is open, there is overfilling of the carburetor and “pouring” of the spark plug. Also gasoline enters into the crankcase. And this will lead to excessive pressure during engine operation and squeezing out the seals. Then a mixture of gasoline and oil will enter the combustion chamber and through the exhaust valve into the muffler. Gradually the muffler will be clogged with oil residues and the engine will lose traction.


The second cause of failure: during transportation or storage the engine was overturned.

Since the engine is a 4-stroke. Gasoline in the tank, oil in the crankcase. And they don’t have to mix. After turning over these components are usually mixed in the carburetor. After that the engine will need to be disassembled and cleaned.


And the third reason for failure: Improper starting the engine with the manual starter.

Many four-stroke engine users think that the harder you pull the starter grip, the better the engine will start. It is not so. The pull handle of the starter should be pulled up to the engagement of the cams and then slowly, but with a large amplitude pull up. And the engine (if it is in good condition of course) is sure to start.


Call 7(963)723-00-43. We will be glad to answer the questions concerning the operation of air-cooled engines Honda, BriggsStratton, Mitsubishi, Subaru-Robin, Lifan, Carver, Loncin, Champion.

Lawnmower oil requirements

The engines in small farm equipment are different from automobiles, so the lubricant should be different, too. Filling the mower with a mixture designed for cars or motorcycles should not be used: it could cause a breakdown. Even if there are no malfunctions, the lawnmower is likely to start working worse: the fluid not intended for this type of equipment will not be able to cope well with its functions. That’s why they recommend you to use specific oils designed for gardening equipment.

Every lawn mower with a gasoline engine needs good oil. Change oil in a new mower after 5 hours of operation, later every fifty hours of operation. If you mow the grass once a week, I recommend changing the oil twice a season.

  • 1:25. 40 milliliters of oil per liter of gasoline;
  • 1:40. 25 milliliters of oil per liter of gasoline;
  • 1: 50 to 20 milliliters of oil per liter of gasoline.

Recommendations on the choice of oil from specific manufacturers

Lawn mower manufacturers always indicate in their manuals the type that is used in their machines and the frequency of oil changes, usually in moto-hours. Usually manufacturers specify their proprietary lubricants and they are worth using if you want to keep the warranty on the equipment. But manufacturers often indicate the general characteristics of lubricants, and then you can pick up similar lubricants from the more widely available automotive oils.

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The oil recommended by the manufacturer is best for any engine. Shell Helix Ultra Shell has been developing new technology for 40 years to produce synthetic oil from natural gas. Pureplus technology has made it possible to obtain an improved base oil composition. On its basis, with the addition of the right additives, get recommended for their equipment by the leading manufacturers.

To buy it, it is recommended to buy it in a trusted store, because the fuel mix can be mixed with oil.к. Although lawn mowers have lower lubrication requirements than cars, getting counterfeit oil in the engine can put it out of commission.

What oil and gasoline to choose for filling lawn mowers with a two- or four-stroke engine

Internal combustion engines used in lawn mowers come in two- and four-stroke models. For users need to know, the oil for a lawnmower with a 4-stroke engine is filled separately from the gasoline. A fuel mixture with oil is made for the two-stroke engine. In this case different compositions are recommended, which must not be replaced and mixed.

How to Fill and Maintain Four-Stroke Motors

Devices with a four-stroke motor, which include lawnmowers by Sterwins, STIHL (STIHL), VIKING, Makita, MTD, are more complicated. They have an oil reservoir in addition to 2 extra piston compartments. Gasoline of АИ-92 and АI-95 brands and oil for 4-stroke equipment are poured into different tanks, and from there they flow into the engine. The oil dosing system will inject the oil in the correct proportion by itself. Do not recommend the use of fuel with a lower octane number. The engine will not run smoothly. Do not use oil that is designed for other models. The owners of equipment need to control the oil level in the system in time. If needed, top up. But experts advise to change it, drain the waste and top up with fresh.

Do not pour fuel under the cap.

Burning it when heated will lead to a sharp oil pressure in the engine system, which can work for a few minutes and stall. It will stop working until the volume of gasoline and oil is reduced. If there is an upper mark, the fuel is poured into the tanks 10% less than it fits into them.

Four-stroke engine oil differs in additives and viscosity. It washes parts and is not mixed with gasoline.

Four-stroke engine oils for motorcycles and lawnmowers

Preparing, mixing and changing the fuel-air mixture are the main maintenance procedures for a garden lawnmower. Durability of both rotating parts and engine depends on the quality and composition of the fuel and lubricant used.

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Lawnmower oil covers rubbing parts and gaps between parts with a thin, viscous film that reduces wear and scratches during operation.

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