How much oil to use when running-in a chainsaw

Why use a chain saw for running-in

A chainsaw is a multifunctional, useful device that is needed in a number of household and industrial tasks. Many agricultural areas and woodlands are not without a chainsaw for harvesting and processing wood. But for good performance for many years, it is necessary to run the chainsaw during the first minutes of operation of the device. These manipulations are done with any tool that is new and are intended for the lapping of all the parts that deal with both the electric motor and the chainsaw headset.

Thanks to simple running-in procedures all STIHL pruning saws can be operated at a sufficiently productive pace without premature repair or adjustment work. According to this, to say whether it is necessary to run-in manipulation, the correct answer will be positive, the main thing is that the correct treatment of the tool. Performing these actions is just as important as accurate chain fitting, quality repair of power tools or the need to buy a grass trimmer line for grass from a responsible manufacturer.

Preparing for the first start of the chainsaw

The first start of the STIHL chain saw before the break-in procedure is to have the guide bar and chain fitted. It is not recommended to start the engine without a saw headset, as the engine will not get the necessary load. High RPM operation of a power unit accelerates its premature wear and failure.

The high engine speed without the bar, chain and clutch cover installed during startup can injure the operator with the released clutch.

In addition to installing and setting up the headset, there are two important preparations that every chainsaw owner must make before starting a gasoline-powered chainsaw engine:

As a rule, in new or repaired chainsaws, the moving assemblies are lapped during small loads given to the tool during the running-in period. In order for the tool to reach nominal power it is needed to work out about 710 tanks of fuel mixture.

How to run in a two-stroke engine properly?

Having purchased a new chain saw (grass trimmer, power drill, generator) with a two-stroke engine many people have a desire to “run in”.

In the understanding of the majority, the “running-in” is made for the running-in of the engine parts at idle speed. So modern air-cooled two-stroke engines don’t need this kind of running-in. It’s even worse. it’s contraindicated!

A two-stroke engine runs on a mixture of fuel: gasoline, oil and air. When reaching operating revolutions (at full throttle, with the choke open), oil in the cylinder burns off completely, without depositing on the surfaces of the cylinder, piston, muffler. If the engine does not reach operating RPM, unburned oil accumulates. You can even see that oil starts to flow out of the muffler And with long idling, as it happens with “running in”, the air comes in little, the oil doesn’t burn, the engine isn’t cooled. Excessive amount of oil in the air-fuel mixture (at idle speed little air is fed into the mixture, the mixture is “enriched”) leads to coking of the exhaust window and formation of sludge on the piston.

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In our Service Center from time to time we bring the grass saws (chainsaws) after such a running-in period. Everyone has a different degree of severity of problems: some were frightened by the fact that the oil leaked from the muffler and they stopped running-in. In this case, the owner of a new Grasshopper or a saw gets off with a light fright)))) The worst thing is when the new owner of a two-stroke engine is running in several tanks of fuel (2-3), in the summertime at the temperature from 25C. Here the consequences can be like in the photo above. It is good that this carbon deposits didn’t break off and the cylinder-piston group was not scuffed But it can happen that way, too.

It should be noted that for the two-stroke alternator engine work for lighting one light bulb is equivalent to work at idle speed. That’s why a long use of your generator in this way leads to the consequences described above. It is not recommended to give the two-stroke generator the load of less than 30% of the rated power.

It is also important to remember that the engine of a chainsaw, mower or power tiller rotates the crankshaft in which the clutch is installed. At idle speed, the centrifugal force is not enough to cause engagement with the clutch cup, but the clutch cams still diverge slightly and friction occurs, and therefore heating. On a chainsaw, it can melt the worm wheel (it’s on the clutch cup), the oil pump, the chain brake cover, overheating the clutch, overheating the clutch cup). Grass trimmer may have a melted clutch cup housing. if it is plastic, overheat the clutch cup and clutch.

The new mower owners are genuinely surprised that such problems can occur, because they seemed to have done everything right.

Other machine owners may assure you: “here I have run in. and everything is fine”. You’re free to believe them That’s your right. And you can even run it in this way yourself.

But the correct “running-in” of a modern two-stroke engine is a little different:

Running in is the work of engine during which all the rubbing parts are lapped.

running-in, chainsaw

Do NOT run-in at idle speed.

Run-in time (lapping) is the time it takes you to burn 1-2 fuel tanks of your tool.

running-in, chainsaw

It is advised to mix a little more oil in the fuel mixture during the break-in period. If you normally use a 1:50 mixture (recommended by the manufacturer, indicated on the oil bottle), prepare a 1:40 mixture when running-in.

And most importantly! Working (Note. Exactly work. ) with your tool without overloading the engine! If it is a saw, cut boards, slabs, or something similar, not cut wood with a diameter greater than a third of the length of the bar. If it is a mower, use a trimmer head with a recommended line. Do not mow tall grass, not waist-high brush. If generator. then do not give maximum load.

At the same time it is recommended to reduce the time of work without interruption during the running-in period and let the engine cool down.

After this running-in period it is recommended to check all threaded connections and retighten everything that is loose.

And importantly! If you suspect your new engine is misfiring or that the carburetor has lost speed or something similar: never try to adjust the carburettor yourself. Unauthorized attempts to adjust the carburetor could void the warranty. Contact an Authorized Service Center.

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Adjusting the carburetor

A full running-in of a new chain saw involves proper adjustment of the fuel system. The standard factory adjustment of the carburetor is based on average data, and therefore needs to be adjusted depending on external factors.

A properly tuned carburetor should provide fast, stable RPM with equal measure of stability in both operating and idle speed. The proper quality of the air-fuel mixture is also evidenced by the brown color of the spark plug insulator.

running-in, chainsaw

How to run-in a Chinese machine correctly

In principle, there are no special differences in the running-in of chainsaws made in China today. The only thing that the Chinese devices are too scrupulous about what oil you’ll use. As it is necessary to apply a lubricant only made in China.

Features of Chinese chainsaws

The main reason for this is that China makes chainsaws powerful enough, which need a kind of fuel for proper and full work. And it is the oils of Chinese manufacturers are filled with these essential components.

Another important rule for those who have a chainsaw from the manufacturer of this country, is to take for the adjustment of the carburetor and for the inspection of the tool itself only service centers, where specialists work exactly with the models of Chinese manufacturers.

It is also important to know about all the nuances of the chainsaw running-in with a video, which you can find on any website that provides this kind of information. It is important to pay attention to every detail, because these are very powerful tools and require a special approach.

Do I have to run in a new chain saw?

Absolutely every new tool that has a two-stroke gasoline engine needs a running-in period. This is especially true for the first minutes of operation of your machine. Since it is from this kind of manipulation in full measure depends, say, so the further good life of your tool.

Because it is during this process that the so-called lapping of all the motor parts and accessories of the saw is performed.

So in this way you can not only significantly extend the life of your machine but also increase its daily output. But you get a good result only if you do everything correctly, without any violations.

You have to remember that before you start the machine you have to study the instruction manual of your chainsaw carefully from cover to cover. And apply absolutely all the recommendations that the manufacturer has prescribed regarding your safety in the work with the device.

It is also important that the oil is the “heart” of your machine’s efficient performance. Because it is the lubricant that guarantees the durability of your chain saw. Today there is a huge variety of oils that are made specifically for two-stroke engines.

over, the containers of each of these kinds of lubricants indicate their purpose. It can be the oil you need for a moped, a saw, or a boat engine. Don’t forget that you should treat this question responsibly.

In fact, this kind of lubricants is not expensive. For the most part, expensive lubricants are used for motorcycles and mopeds. Therefore, it is somehow illogical to use it for chainsaw engines, the main reason for this is the high price of oil.

3 Easy Ways To Check If Your Chainsaw Is Oiling The Bar & Chain. Video

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It is also worth noting that the most common, and, in fact, the best producers of oils specifically designed for chain saws are: Huxvarna, Oregon, STIHL and dolmar.

Because their products have a kind of additives, thanks to which, without a fraction of doubt, you can use a chain saw at any time of year and thanks to which, by adding them to the gasoline is guaranteed a smooth and long work of the engine itself.

It is easy to make a choice in favor of this or that chainsaw, if you first read our rating of the best chainsaws.

Maybe you will be interested in chainsaws made in Russia, because they are cheaper than their foreign counterparts, but in quality they are not inferior.

Or opt for one of the world’s leading chainsaw manufacturers. Patriot chainsaws.

Running in the chainsaw engine after repair

After overhauling the chainsaw engine, it is advisable, just as with a new tool, to run it in. The process, in its essence, does not differ from the way the running-in of a chainsaw just bought in the store is done.

If we understand that the parts installed during repair, as well as parts of new tools, are running down during the same period, so the conditions that contribute to this should be provided by the same. So, for the successful running-in of the engine after the overhaul, it is necessary to perform the following actions:

  • Enrich the air-fuel mixture by turning the screw H ¼ of the position in which the maximum engine speed is reached, and for chainsaws that do not have the possibility of adjusting the carburetor, increase the amount of oil in the mixture with petrol.
  • Let the engine cool down more often.
  • After the first four hours of work, dilute the fuel mix for household models according to the manufacturer’s manual, and for models with a carburetor adjustment, bring the engine RPM to normal by adjusting the H screw.

Running in the chainsaw. Overview, setup, basic mistakes

A break-in procedure is absolutely necessary after the first start. both for new and reconditioned machines. The process allows to increase the service life of the power unit and the sawing equipment by lapping the moving units and parts, in the mode of sparing loads. For beginners the running-in procedure helps to acquire the chain saw skills.

Starting and running in

First 5 minutes of idle work. And then you can get down to simple jobs, such as cutting small branches or trunks up to 100m. Let the chainsaw have a medium rpm first, and then gradually work your way up to a more serious beginning. While working, pay attention to safety precautions!

After about 40-50 minutes of operation, check that the chain is tightened. To keep your chainsaw in good working order in the future, do not overload its engine at first! It’s also important to keep an eye on the chain at all times, a jammed chain can lead to breakage. Chain jamming is not covered by the warranty, so be careful. Use all the fuel in the tank for the run-in.

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