How to breed gasoline for a Stihl 180 chainsaw

Chainsaw STIHL MC 180 specifications

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The STIHL MS 180 chainsaw has characteristics that correspond to the light class. It is equipped with tanks of small volume, while it has a low weight. 3.9 kilograms. Engine power rated at two horsepower or 1500W, easily copes with any task.

How to adjust the carburetor on a STIHL 180 chainsaw?

The instrument has been configured for users with varying experience with this equipment. Cleaning, replacing or repairing will not be difficult for you, since it is quite easy to disassemble the carburetor on the STIHL 180 chainsaw.

You can purge the unit yourself, change the gaskets and the needle valve, for which you need to disassemble the STIHL 180 carburetor. To do this, you need to unscrew the four screws located on the compensator cover, and also screw one on the fuel pump. After you open the case of the unit, you should be extremely careful, since even the ingress of small debris and even hairs can make the operation of this unit impossible.

How to dilute gasoline for a STIHL 180 chainsaw?

Most owners of saws of this model are wondering what gasoline to pour into the STIHL 180 chainsaw and what proportions with oil must be observed. The best option is a ratio of 1/50, which means that for five liters of ready-made mixture, you only need 100 milliliters of oil.

How to mix gasoline with oil

You can extend the operating life of the STIHL MS 180 chainsaw using a high-quality, properly prepared fuel mixture. Quite often, AI-2 or AI-95 gasoline is used for this model. Please note that only unleaded gasoline is allowed, which can protect the engine from premature damage.

Chainsaw STIHL 180 faults and repairs

Among the common breakdowns of the STIHL 180, as well as other models of chainsaws, the following can be attributed:

  • Drive sprocket wear due to aggressive and frequent use.
  • Starter cord breakage.
  • No spark in spark plugs.
  • Leakage in the lubrication system supplying oil to the chain.
  • Air is sucked into the crankcase through the oil seals.
  • Breakage in carburetor leads to fuel cut.

Chainsaw STIHL MS 180. features of operation and maintenance

The STIHL MS 180 chainsaw is used for preparing a stock of firewood in private houses and small farms, improving the garden area, crowning shrubs, with its help you can clear the area and perform a variety of work of various levels of complexity, including felling trees and sawing wood. It is truly a multifunctional device. In addition, you can use different attachments for repair and construction work.

How to start a STIHL 180 chainsaw correctly?

If you do not know how to start a STIHL 180 chainsaw “cold”, you should strictly follow the manufacturer’s recommendations and requirements, following the algorithm:

  • Turn on the ignition (how to set the ignition on the STIHL 180 chainsaw is indicated in the device passport).
  • Install the control lever at the lowest point (this way the carburetor choke will block air from the filter, and the throttle will be fully open, and the fuel mixture can be enriched).
  • Pull the starter handle several times before the first flash goes off. This will signal that the mixture has entered directly into the cylinder, and your unit is ready to start.
  • Now you can move the lever up one section, while the throttle valve will remain in the same position, and the air will open.
  • You just have to pull the starter. At the same time, the STIHL MS 180 chainsaw will operate at increased speeds.
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If you need to set the throttle to idle, simply pull the throttle trigger and release it immediately. After that, the device will return the speed to normal.

Fuel mixture: the proportion of oil and gasoline for the chainsaw

The chainsaw engine is the heart of the tool, so it is very important to use a properly prepared fuel mixture.

The fuel mixture for a chainsaw is prepared from two components. oil and gasoline. Chainsaws are equipped with two-stroke engines, so oil is not added to the lubrication system (like in a four-stroke engine), but directly to gasoline. At the same time, it is very important to observe the correct proportions of ingredients, of course, in no case try to work on pure gasoline, because in this way you will very quickly “kill” the chain saw.

If we talk about what kind of gasoline to pour into the chainsaw, then it will be optimal to use fuel with an octane rating of A-95, in this case the savings on fuel can turn out to be deplorable. Often European manufacturers indicate that it is possible to use A-90 or A-92 gasoline, but in post-Soviet countries the quality of gasoline is inferior to that of Europe, so in our realities it is better to use better quality gasoline.

As for the proportion of the petrol-oil mixture itself, everything is simple here: you must follow the instructions for the tool. All manufacturers of chainsaws indicate the required ratio in the instruction manual or in the passport of the tool, in addition, the proportions for refueling the chainsaw may differ depending on the model of the chain saw. As a rule, the proportion of oil and gasoline to a chainsaw of famous manufacturers is a ratio of 1:40 or 1:50, which means 1 part of oil for, for example, 40 parts of gasoline. Now arithmetic 1 liter of gasoline = 1000 ml of gasoline, divide by 40 and we get 25 ml of oil. If you follow the same steps to a ratio of 1:50, you get 20 ml of oil per 1 liter of gasoline. As for budget chainsaws made in China, the situation is slightly different. The ratio of gasoline to chainsaw oil made in China 1:25, that is, divide 1000 ml of gasoline by 25, we get 40 ml of oil. The thing is that in branded chainsaws, a solid assembly and the distance between pistons and cylinders in the engine is much less than that of Chinese chainsaws, therefore, the required amount of oil differs almost twice.

Use a conventional medical syringe with sufficient volume to measure the correct amount of oil.

Another subtlety. first fill the dry gasoline can with gasoline and then oil. The procedure, on the contrary, is fraught with a poor quality fuel mixture, because the oil is denser, it will stick to the bottom of the canister. what a good mixing here.

Be sure to prepare the fuel mixture in a canister and pour ready-made special fuel into the gas tank! Never cook or mix directly in the fuel tank of your chainsaw!

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If you figured out the question of how to breed gasoline for a chainsaw, then on storage conditions and shelf life of the fuel mixture it is worth saying a few words. It is best and easiest to prepare a petrol-oil mixture for 1 liter of gasoline, it is recommended to do this immediately before working with the tool. Chainsaw fuel tanks have a volume of 0.3 to 1 liter. In the conditions of domestic use, the entire volume of the prepared combustible mixture is rarely used in one session, so the remainder can be saved until the next session. It is necessary to store the fuel mixture in a special canister for gasoline, in a dry, dark place. It is optimal to count that the shelf life of the finished mixture will be 7-10 days. The fact is that the oil on the market now is not synthetic, but organic, that is, natural. After 10 days, all lubricating properties are lost, gasoline simply “eats up” the oil. Naturally, it is no longer possible to use such fuel, this can cause breakdown and failure of the chainsaw.

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At the end of the work, it is necessary to drain the fuel mixture, start the chainsaw, the tool will stall (so that the saw has a dry carburetor) and now you can leave it until the next operation.

Unsuitable fuel mixture must be disposed of.

Chainsaw “STIHL”: which gasoline oil to use?

A number of manufacturers that produce equipment also develop their own consumables that are adapted to the operation of a particular engine. Likewise, STIHL produces oil exclusively for its equipment. It is equipped with special additives that can compensate for the quality of the fuel, improving lubrication and cleaning of the fuel mixture. It should be noted that Husqvarna HP oil is universal and can be used for all chainsaws. It can be used at a temperature not lower than 10 degrees.

And also for two-stroke engines, products of the following brands are used: Sadko, Kraissmann, Oleo-mac Prosint. If you use a STIHL chainsaw, how much oil should you add per liter of gasoline? The ratio will be 25 ml of additive per liter of fuel. It must be remembered that there are oils for chains and motors. They are intended for different purposes and are not interchangeable. The use of chain oil for the preparation of a combustible and lubricating mixture leads to tool breakage.

What gasoline to pour into a chainsaw?

According to experts, you should use unleaded gasoline obtained by adding lead-free additives, the octane number of which exceeds 90. For foreign models, it is required to fill in gasoline of higher grades and use branded oils from tool manufacturers. The AI-92 grade fuel is considered perfect. How to dilute gasoline for the STIHL 180 chainsaw? In this case, oils are meant in a mixture of 1:40. AI-95 fuel is also quite suitable for it, but according to professionals, it is better not to use it for chainsaws.

The fact is that it is made on the basis of AI-92 with the use of certain additives that change the quality of the fuel. These components are deposited on the inner parts of the tool and, when the critical mass is reached, begin to flake off, disrupting the operation of the mechanism. The best option is to follow the instructions that come with the selected model. It is recommended to use fresh gasoline, because during long-term storage in containers, octane properties are lost.

What will happen if you do not take into account the manufacturer’s recommendations?

In case of violation of the rules for the preparation of fuel and lubricant mixtures and non-observance of the proportions when adding oil to gasoline at the STIHL 180 chainsaw; the following problems arise:

  • With an increase in friction, the wear of the working surfaces of parts will increase.
  • Insufficient lubricant will cause bearings to deteriorate.
  • The full functioning of mechanical assemblies is disrupted due to premature wear of parts, their service life is significantly reduced.
  • When using low-grade grades of gasoline and oils, the performance of the unit decreases with the subsequent breakdown of important components and parts.

The fuel is prepared before refueling the saw, avoiding excessive contact with oxygen. After finishing work, the remaining mixture must be drained.

Which brand to use motor oil?

For each model, the manufacturer advises a list of materials to be used. It is better for the user to adhere to these recommendations, because the warranty does not cover tool breakage due to inappropriate fuel and lubricant. In this case, the owner himself pays for the repair of the chainsaw, which can be up to 80% of its cost. When you can’t follow the manufacturer’s recommendations, try to follow these rules:

  • Use oil only for 2-stroke engines.
  • Do not use after the expiration date.
  • Do not add used oil with a large amount of impurity to gasoline, as the mechanisms of the tool can be damaged.
  • Chain lubricant cannot be used for the fuel mixture.
  • It is preferable to use synthetic and semi-synthetic oils, which are more expensive than mineral oils, but do not form harmful deposits.
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Shelf life of the finished fuel mixture

Motorists know that it is not worth storing gasoline for a long time, and the finished fuel mixture deteriorates even faster. It is necessary to mix the required proportions of oil and gasoline for the STIHL chainsaw before starting work. Manufacturers allow storage of finished fuel for up to one month, and experts recommend that this period be reduced to 10 days. Immediately after mixing, the solution begins to lose its original properties and over time it becomes not at all of the same quality as it was prepared. Learn to prepare enough saw fuel to be consumed in one go. It comes with experience. The mixture should be stored in a gasoline-resistant, opaque, tightly closed container. For this, any cans made of plastic metal for combustible materials are suitable. And also use a container from under oil or glass containers made of dark glass.

So You Own A STIHL MS 180 Chainsaw

Chainsaw characteristics

Every chainsaw has three main elements that make it work. These include a 2-pin carburetor engine and two tanks. One is filled with the fuel mixture, the other is filled with the oil necessary to lubricate the chain. The volume of the fuel tank is 0.25 liters, which allows you to work without stopping for 45–55 minutes. The volume of oil is about two times less. With this ratio of volumes, the contents of both tanks end almost simultaneously.

When operating 2-stroke engines, the oil pump system is not used, therefore, for the STIHL chainsaw, oil must be added to gasoline to lubricate the shaft, piston and other rubbing parts. Attempts to run on one gasoline or non-observance of the proportions specified in the instructions for drawing up a fuel and lubricant mixture of two components lead to a breakdown of the tool.

How to prepare the mixture?

In order for the equipment to serve for a long time and properly cope with its functions, you need to know exactly how much oil you need to add to gasoline for the STIHL chainsaw. Earlier, we found out that it is better to use a lubricant product from the STIHL manufacturer and AI92 or AI95 unleaded gasoline as components. Leaded fuel grades adversely affect the operation of the unit and disable it. With these components, 20 ml of oil is added to the mixture per liter of gasoline. Any violation of the proportions leads to the appearance of carbon deposits on the spark plugs and pistons, as well as the formation of scoring. The oils used can be green, blue or red.

Their presence is easily determined by the color of the mixture. To dilute fuel, often complete with equipment, a special canister is attached. These containers have graduated marks and two holes. The user only needs to fill the tank with the components of the mixture to the required marks, close the lids and mix. Some people use plastic bottles and syringes to measure oil for this purpose. In this case, it is necessary to ensure that foreign particles or water do not get into the container, all this will worsen the operation of the engine.