Filling up the chainsaw
Usually domestic manufacturers write in the annotation that gasoline must be with an octane rating of more than 90. As for the proportion of oil and gasoline, it is also necessary to look at the annotation. For one saw 1 to 30, for others. For a Husqvarna chain saw, for example, 1 to 40 and 1 to 50.
Dilute 1 liter of gasoline with 50 ml of oil for two-track internal combustion engines. make no mistake. It is better to use gasoline of AI 93 or AI 95. And the exact ratio and brand of gasoline is desirable in the passport, which is attached to the product
Get the booklet for your lawnmower, usually it’s a booklet, which deals with what you took the mower. There will certainly be marked, what are the requirements for gasoline. Usually you need to fill ratio 1:40, although the option 1:30 is likely. In other words 1 part of oil and 40 parts of gasoline. The ratio is also marked on the oil package. We buy 92 gasoline, mix it with oil in a separate canister, and then fill this consistency lawn mower and chainsaw.
In most cases, for two-stroke engines in gasoline mowers use gasoline AI-92, and the oil to gasoline ratio 1k40. If you do not know, you can try 1:30. And then see how the grasshopper behaves and adjust it in one direction or another.
In gasoline mowers usually use a 2-stroke engine. You should use the fuel mix suitable for the 2-stroke engine. Because in the engine there is no complex of accounting programs of lubrication, the oil is added to fuel. If oil is not added to the fuel, the engine fails in a short period of time, because the rubbing parts are running dry and overheat. First the piston, piston rings and the cylinder are tormented. In recent years, all domestic manufacturers advise to use gasoline with an octane number not lower than 92 with oil for 2-stroke engines in the proportion of 40:1. If the engine is new or repaired, there is an option to add some oil not just temporarily running-in (25:1). Always, if the manufacturer’s advice is unrecognizable, it is better to look at the label of the oil can. If it is a question of changing the proportion, it is better to give oil than just. With all that, the risk of engine failure will be the least.
Preparing the working mixture manually, it should be remembered that two-stroke engines do not reach the design operating power, if the proportions of the fuel mixture are violated. The given condition forces the owner of the aggregate to observe the proportions. Practice shows that using a brushcutter with insufficient lubricant. oil starvation of the engine is observed, which does not allow to bring the aggregate to its standard capacity.
Too much lubricant does not let the engine develop the necessary power. Preparing the working mixture, a reasonable question arises, how much oil should be stirred in gasoline. It helps to know exactly what is standard. It is recommended to fill gasoline in grass trimmer according to the following mathematical calculation. If the fuel tank holds 5 liters, 1 liter of gasoline divided by 50. That is, for 5 liters of gasoline for the grass trimmer mower, pour 100 ml of lubricating consistency. The owner of a brushcutter gets the perfect fuel in terms of structural composition.
Criteria for self-selection
Large range allows you to choose oil that fully complies with the class and characteristics of chain saw, the conditions of its subsequent operation.
- Standard oils can be used for low-cost models, and Super and Ultra types are recommended for professional chainsaws.
- To prepare a complete fuel mixture for a chainsaw, it is advisable to use branded oils or their brand analogues recommended in the instruction manual. In particular, STIHL and Husqvarna motor oils of the same composition and use are fully interchangeable.
Specialists recommend that owners of chainsaws exclude from the attention of motor oil, designed for two-stroke engines of mopeds, boat motors and other mechanized equipment of the household group.
Correct Way To Mix Gas and Oil For a ChainSaw, WeedEater String trimmer. Easy 2 Cycle Oil Gas Mix!
Power units of this equipment operate in more comfortable conditions, which makes their performance requirements less stringent.
Fuel quality increases with proper mixing of the mixture components. The question arises how to breed, in what sequence. Beginning to mix the components, pay attention to whether the containers are cleanly washed. Minor particles can block the fuel supply to the carburettor. You should fill the fuel tank from a fuel container with a filter.
The order is as follows. Half of the available gasoline is mixed with the volume of the specified amount of lubricating fluid. This is followed by the mixing process.
When the components acquire a homogeneous consistency, in partially diluted gasoline, pour 50% of the remaining fuel. This is how it is recommended to dilute fuel for grass trimmer.
Rules for adding oil to different engines
Everything described above is valid for two-stroke engines. In the case of four-stroke engines, you don’t have to dilute and mix anything. gasoline is poured into the fuel tank, and oil into the crankcase. It is important to be aware that you should not add any oil intended for the four-stroke engine or the liquid cooling system to your brushcutter with a two-stroke engine. Otherwise the entire piston system will fail or severe overheating will occur.
Important! For the first filling of a four-stroke engine, no more than 90 ml can be poured into the special tank.
Without this substance, the engine will run, as they say, “dry”. And experience shows that such mode leads to rapid wear of friction parts and burnout.
Engine oil has several functions
- Minimizes friction between the parts in contact. in other words, it plays the role of the lubricant;
- prevents rapid wear and tear by minimizing friction losses;
- removes heat, keeping the surface of the parts at an acceptable temperature;
- it reduces vibration and therefore contributes to reducing the noise of a running engine
- acts as a cleaning system.
How to choose for a lawnmower?
Gasoline of AI-92 or AI-95 grades is used for two-stroke trimmer engines. most often. the first of the named. There is necessarily information about this in the technical passport of the product. If, for some reason, you don’t know exactly what gasoline your grass trimmer should run on, you can choose by testing both grades of gasoline in action. The global changes in the engine from that will not happen, but to determine what kind of gasoline a particular model unit likes more, for some factors is quite possible. This will show the developed power, and injectivity, and engine heating, as well as its stable operation at all speeds.
But with the proportions of oil to a certain volume of gasoline to be determined much more difficult. In this case you need to know something about the producer of equipment. And by the standard ratios for this manufacturer select the ratio for a specific model, taking into account the type of oil.
You can even start the selection by country of manufacture.
For example, two ratios are basically used for Chinese low-power trimmers. 1: 25 or 1: 32. The first one is for mineral oil and the second one is for synthetic oil. We already told you about choosing the standard ratios for European and American manufacturers of chainsaws in connection with the type of oil. TV oil by API classification should be used according to the oil grade for household trimmers. For more powerful. TC class.
About what ratio of gasoline and oil is necessary for the lawnmower, see the following video.
The grass trimmer, or lawnmower, is a tool you can’t do without in the household. At the same time, its reliability, efficiency and long service life depend on many factors. For example, the quality of fuel. This means that it is necessary to correctly select the oil for the grass trimmer, to observe the proportions when adding it to gasoline and the rules of refueling the device.
Mixing fuel for two-stroke engine
In two-stroke engines the lubrication of the crankshaft surfaces, piston group, bearings occurs with the help of oil contained in gasoline, which is the main difference between the work of two-stroke engines and four-stroke ones.
When preparing the fuel mixture, you must clearly follow the instructions in the manual of the tool or on the bottle of oil for two-stroke engines. that you bought. Oils used for trimmers do not differ fundamentally from the lubrication of other garden equipment with a gasoline engine 2t.
Ratios of oil for petrol blends
Fuel that is saturated with oil causes soot on the cylinders and scratches the piston; gasoline suffers from poor combustion, which lowers engine efficiency. Underfill the oil, piston rings will be destroyed, and the engine will jam because of excessive friction.
When it is not clear how to mix, if it says one proportion on the tank, another in the manual and a third on the canister, you should follow the one on the oil bottle. Definitely.
For trimmers, chain saws
Gardening equipment is filled with 92 or 95 gasoline, adding oil according to the instructions. If it says to mix motor oil in proportion of 1:50, then 1000 ml must be divided by 50: you get 20 ml. It means you need 20 ml of 2-stroke oil for 1 liter of gasoline. It is convenient to do it with a 20 ml syringe.
Types of engine oils and their purpose
Oil Selection for Gasoline Trimmer
Engine oil for gasoline grass trimmer is a lubricant that serves to reduce wear and tear between the rubbing parts of the engine.
The composition of the oil includes residual hydrocarbons and various additives that improve the properties of the final product. To ensure long and trouble-free operation of your lawnmower, specialists recommend using oils, which by their physical and chemical properties correspond to this type of motor.
Today it is accepted to distinguish three main types of oils by the way they are produced:
- Mineral oils created by distillation of hydrocarbons;
- Synthetic oils, obtained through natural gas processing or synthesis;
- Semi-synthetic, which includes an improved mineral oil with addition of some synthetic components.
In order to prevent the mixing of different types, the manufacturer adds a dye to the oils, which shows the difference in the composition of the lubricant.