Oil proportions for two-stroke chainsaw engines

proportions, two-stroke, chainsaw, engines

Choose for the motor

In order for the tool to work as long as possible, you need to buy lubricants with a low mass fraction of ash.

It’s easy to get lost in the wide range of lubricants. Many manufacturing companies insist on using the same company’s oil for their saws. STIHL or Husqvarna power tools are best lubricated with lubricants from these same brands.

Saw manufacturers do not go so far as to guarantee that a chainsaw will run very well with the wrong brand of oil. But it doesn’t mean that the saw will break down right away after using the wrong oil.

In this matter, it is better to trust the recommendations of the manufacturer. If the manual mentions a specific brand, use that brand. If there is no specific brand, you can safely mix fuel with any two-stroke oil. Judging by the experience of many sawyers, it is better to buy materials from well-known manufacturers like Makita, Husqvarna, Echo, STIHL. Also good quality products from companies that specialize in the production of fuel and lubricants, like Ravenol.

How to dilute gasoline with chainsaw oil

A chainsaw is used for cutting trees, repairing work. The popularity of this tool is growing every year. Every owner buys it in his house. But in order to use it for a long time, it is important to take good care of it. Only with good care will the saw last a long time and not harm your health.

This is especially true for gasoline-oil mixture. It must be diluted and poured strictly according to the instructions that will be given below.

secrets of 2 stroke engines oil x gas mixture

How to dilute gasoline for a chainsaw? Oil Selection and Proportions

One of the most frequent questions users ask is: How to dilute gasoline for a chainsaw correctly?? When preparing the fuel mixture, the following factors must be taken into account:

  • The quality of gasoline, its octane number
  • Oil for two-stroke engines
  • Mixing proportion
  • Devices for the convenience of petrol dilution
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How to mix oil and petrol for the 2-stroke engine

A peculiarity of two-stroke engines is that the fuel is mixed with the oil in the tank. Each refueling before operating the equipment requires the preparation of the fuel mixture with the observance of the proportions. How to do it properly? From our article you will learn how to dilute gasoline for chainsaws, grass trimmers and other garden tools.

Why mix oil and gasoline??

Most people are used to handling four-stroke engines. Even in motorcycles, this type of engine is now more common than two-stroke engines. The mere requirement to pour oil into gasoline does not lead to an understanding of the process. After all, in familiar car engines, there is a whole system that prevents the mixing of oil and fuel.

The Focus is all about the peculiarities of low-powered internal combustion engines with two strokes. They are very simple in design and don’t have an oil pan and pump to force liquid lubricant into the right places. Only the cylinder and crank mechanism with crankshaft fit in the crankcase.

To provide lubrication, the designers have taken a different tack: they have arranged the system of channels in such a way that the fuel not only flows into the combustion chamber but also washes the moving parts on the reverse side of the piston. Since the lubricating properties of gasoline are clearly insufficient to reduce friction, oil is added. By the way, due to these features, the rings on the piston are exclusively compression rings, there are no linchpins.

How to fill a chainsaw

Let’s look at how to fuel a chainsaw. If the saw is not properly fueled, it can endanger the life and health of the device’s operator.

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There are rules that must be followed when fueling the saw:

  • You can not spill oil and fuel mixture;
  • The place where the saw is to be filled must be level;
  • the place must be more than 2 m away from the area where the device will be operated;
  • The area must be located away from the fire; no smoking is allowed in the area;
  • at the time when the fuel tank is filled, it is necessary to fill the oil tank, which is designed for automatic chain lubrication; you can distinguish the containers by special icons;
  • Wipe the containers’ necks with a cloth before filling;
  • To reduce the risk of fuel spillage during operation, be very careful when you unscrew the canister caps and use a funnel for filling;
  • be careful when tightening the cap with the latch;
  • Experts advise not to fill up the tank completely, but to leave some free space.

If you run a properly fueled chain saw, check regularly the tightness of the container and the motor. If the chain gets very hot, or the gasoline runs too fast (faster than the oil), you should be wary. Before you start your chainsaw, it is a good idea to run it in.

If your chain saw operates correctly, one tank of gasoline should be enough for 30 minutes of maximum use. When the gasoline runs out, the grease in the second reservoir is still left, but in small quantities.

The choice of gasoline

The first question users have to ask themselves before starting work is what kind of gasoline to put in their STIHL chain saw.

Only use unleaded high-octane gasoline for your STIHL chain saw. е. With an octane number higher than 90. If you fill up with low-octane, it is fraught with engine overheating, jamming of the piston and engine failure. Therefore, it is optimal to fill gasoline brands AI-92 or AI-95 in a chainsaw, but here there is a question of fuel quality.

Poor-quality AI-92 can fall short of the specified octane rating, and AI-95 often contains too many additives which do the engine no good. In addition, if the additives are of poor quality, they are short-lived, and after a few days of purchased fuel can turn into a low-octane, which is not suitable for the engine chainsaw.

At the same time, a good 95 can harm the piston system “burn” it. So some users have found a way out: fill up your chainsaw with gasoline AI-92 mixed with AI-95. This achieves an optimum balance between octane number and quantity of additives.

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Each chainsaw has different specifications and can do different jobs.

Powerful saws are suitable for cutting down century-old trees, small format chainsaws are more suitable for various jobs in the household:

Standard chainsaw blocks:

  • Power Pack.
  • Clutch.
  • Ignition unit.
  • carburetor.
  • Fuel block (oil and fuel tank).
  • Filters for incoming air purification.
  • Starter.
  • Chain.
  • Tire.
  • Chain brake.
  • Tensioner.
  • Chain lubrication element.

Every chainsaw requires high-quality fuel and lubricants, and it is these that ensure the long productive operation of the machine. What gasoline to pour for a chainsaw, in what proportions?

Domestic chainsaws work with plain oils, foreign ones need a more sophisticated fuel mixture that has been thoroughly refined.

Measuring vessels

The table on the saw can be used to check the correct oil and gasoline ratio. Branded containers from leading manufacturers of engine oils are equipped with built-in measuring devices, providing a precise dosage of oil for different volumes of fuel mixture.

proportions, two-stroke, chainsaw, engines

Measuring utensils are included in the factory kit of many budget category chainsaw models. In some cases, to dilute gasoline with oil in a given proportion will help medical syringe volume of 20 cm3.