Stihl ms 250 - the best German chainsaw for home use

Purpose

The Stihl 250 saw is perfectly balanced and combines such qualities as high power and at the same time light weight and ease of use. The power allows you to install larger tires on this model, which means sawing thicker tree trunks, which increases productivity. Weight affects comfort when using the tool for a long time. Small dimensions allow you to work with a saw in places limited in area or in dense thickets. With this saw, it is convenient to clean a fallen tree from branches or cut out small shoots.

If necessary, Stihl 250 can cope with more complex tasks, but you should not work with maximum loads for a long time. The resource is still not the same as that of professional saws.

The Stihl 250 saw was designed using the most modern developments of German engineers, which we will talk about a little later.

Of course, the power unit of the Stihl MS 250 chainsaw cannot be compared in power with the engine of a professional model, but it is also capable of much. The difference with a household chainsaw is felt as soon as you start making the first cut. If desired, customers can purchase a richer set of Stihl 250, in which it is additionally equipped with devices that increase the comfort of using the saw.

Revision or preparatory work with a chainsaw

Revision, preventive and preparatory work with a chainsaw is clearly demonstrated in this video. Any tool requires attention. In order for it to serve you clearly and smoothly in the future, these works should be done in a timely manner.

You need to do a little research. Device acceleration is initiated. It is necessary to evaluate the serviceability of the engine during the maximum speed. When the engine is functioning correctly, when you press the accelerator, the speed quickly increases to 15,000 rpm.

If this does not happen or the increase in speed is too slow, it is necessary to use the screw marked with the letter L. It turns counterclockwise. Moderate movements must be observed, since the turn cannot be more than 1/8 of a full circle.

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Specifications

The Stihl 250 chainsaw is supplied to the Russian market as standard with two tires of different lengths: 14 and 16 inches. Depending on the task, you can choose any, and with luxury versions, such as Stihl MS 250

When choosing a chainsaw, you should not get hung up on the length of the bar; if necessary, the bar and chain can be replaced with a longer one or vice versa after purchase.

The weight of the chainsaw is indicated without filling fluids. Of course, it is difficult to determine from the characteristics how the chainsaw will behave in business, for this you need to try it at work and compare it with something. To find out how much a chainsaw costs today, we suggest looking at the most current offers from Yandex.Market:

Characteristics of modification C-BE

Due to the quick chain tensioning system, the weight of the saw has been increased by 0.3 kg to 4.9 kg. The cost of an improved modification will be approximately 10% higher. To date, the current price is 26990 rubles. All other technical characteristics of the standard and improved model Stihl MS 250 C-BE are the same. Power 3.1 liters. s., which is translated into kW 2.3. By the way, this is 0.8 more than that of the household model Stihl MS 180. Engine speed is 11 - 13 thousand.

Features of the device 250 model and modification C-BE

To improve the performance of the Stihl 250, the designers installed several modern developments on the chainsaw that best affect the comfort and quality of the chainsaw. The first thing that will be discussed is the compensator.

Compensator

A special tool installed in the carburetor cover and connected to the air filter housing by a separate small channel. The essence of the compensator is that it allows air to enter the carburetor in addition to the fuel filter. This is necessary in those moments when the air filter is as dirty as possible and does not allow the amount of air required by the engine to pass through.

On chainsaws not equipped with a compensator, a dirty fuel filter can cause an increase in fuel consumption, an over-enrichment of the fuel mixture. As a result, everything can end with soot under the piston rings and CPG scuffs. Accordingly, the saw will require expensive repairs, and the compensator is able to insure against all this.

You can not work for a long time with a chainsaw with a dirty filter, even if it has a compensator. We recommend cleaning the air filter after every working day.

Carburetor heating

This feature is most useful in winter as it prevents carburetor icing. The operator switches the option on and off as needed. To change the mode, it is necessary to move the valve, which redirects warm air flows to the carburetor or vice versa.

In the summer, make sure that the damper is open, as otherwise the engine will not cool properly and may overheat.

chain brake

One of the safety mechanisms when working with a chainsaw is a manual inertia chain brake. If for some reason the chainsaw tire makes a sharp rebound, the brake will turn on and the chain will instantly stop spinning, thereby reducing the risk of serious injury. For proper operation of the chain brake, the operator must comply with several conditions:

1. Hold hands as instructed by the instructions, i.e. left hand on the front handle, right hand on the back.
2. Timely clean the mechanism, because it is located in the side cover, where a huge amount of sawdust gets into.

Vibration reduction system

The chainsaw engine vibrates strongly during operation. Vibration can cause discomfort and reduce operator time due to fatigue. To solve the problem, German engineers equipped the Stihl 250 with an anti-vibration system of effective shock absorbers. Thus, Stihl 250 can be used for work even by those who have chronic diseases of the hands.

Combined control

Another system that adds convenience and is designed to facilitate the operation of the Stihl 250 is the combined control lever. Thanks to which, turning the ignition on and off is done with the thumb of the left hand. The suction mode is also turned on in the same way. The switch never needs to be looked for, it is always at hand, which is especially convenient in case of an emergency.

Ematic

This is an officially patented system by Stihl, which is designed to reduce friction and increase the life of the saw set. The system includes not only the part that is installed on the chainsaw, this is the oil pump and transport lines, but also the tire and chain of the chainsaw.

Chain lubrication system

Chainsaw calm ms 250 carburetor repair

in a 240 carburetor is raucous, so how is there a ride thing?

Anton Chuchkalov 2 months ago

the craftsmen climbed the rival na250a trimmer, tightened 2 adjusting bolts in the carburetor, and now the trimmer does not start. in fact the light is flooded, after all dry yes to throw it. I can't understand at all. on this he was launched, yes was strangled after 10 seconds. Everything seems to be right away.

Ilya Mamonov 2 months ago

Czar (because of the video, only the one who reanimated the calmness carb according to your method.) I found a rubber hub, gauge closer to 6. I put it on hard, but I put it in. changed, works like a chronometer.

Victor Pavlovets 2 months ago

In the 361st carburetor repair, as it is, or are there heaps of nuances?

Now Reading: How to Remove a Carburetor from a Chainsaw Video

Artem Lebedev 3 months ago

Hello, I have a Stihl MS 250 not everything starts, can you remind me what the question is?

andrey conductors 3 months ago

king Thank you for the video capture of the hacksaw.

Read:

Sergey Atamanov 4 months ago

king, tell God how to recover two disloyalty with 180 caliber: the pin, pulling the cord to work out of the socket, and the string relaxes (before it changed the washer and the locking washer holding the star, so the string flew, and the native money was lost, I bought new ones from the dealer and installed it). The second question, in standby, turns the string (e.g. need (Th) to check the speed if (of course) of course, because how?)

Elena Razhivina 4 months ago

The king advises. It burns a candle, at least cold, at least hot, if it is closed or closed, the air valve, and if you extinguish the candle, you can wrap it, you can enter it if you do not touch the damper. I will make a hard date. The littlevolume250 hacksaw works.

cholovsty is kept at maximum, average usually works. Does not touch the valve, lightly covered in batches, at the same time floods the spark plug and in a hacksaw to refuse it.

yakudza8282 6 months ago

Hello, tell me how to fight you? Can welcome?

Artem Shelepov 7 months ago

yes what are you in my chainsaw AL up to 3835 revolutions float gives the blue fire sympathy works to the same standards for the other two - and the dial of such turns has been miscalculated over who can exist tell me god for

valera sokolov 7 months ago

Vasily said hello, tell me for some reason from the muffler a small wind of 250 is a flame, and the hacksaw does not work well in turn?

maratto attto 8 months ago

Hello, after 9 months of storage, the new ms211 hacksaw does not start. In the lowest position it rises, for this, in the second ascending position, the waiting time will be 1-2 seconds. I don't remember if the gasoline was left in storage or not. Candle changed, grain to eat. food has changed.

maratto attto 7 months ago

AlexNormal Thank you!

Alex Normal 7 months ago

marattto attto In the carburetor, the gasoline will evaporate due to the long storage time, and the lubricant that was added to the gasoline will remain, this lubricant when the paste becomes and holds the membrane that pumps the food into the carburetor. Remove the carburetor, view this membrane. For long-term storage (more than 3 months) it is necessary to (t) combine food with a saw and extinguish a container of 20 ml of pure gasoline, drop the saw and pump this gasoline into a can. turns, so the carburetor is flushed, the piston does not get stuck due to this short running time in clean gasoline.

8 months ago

because of this? gasoline returns to the bunker due to the tank

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Stihl MS 250 C-BE

For even greater customer comfort, Stihl produces models equipped with an improved modification. Their letter designation can be deciphered by knowing what each specific letter means.

(E) - a starter with a special spring is installed on the saw, which reduces the load when starting the Stihl 250 chainsaw, making the start smooth and comfortable. The system is called ElastoStart.

(B) - the chain tension system is installed on the saw without the use of additional tools. Thanks to which, the operator does not need to carry tools with him. And it's pretty convenient.

(C) - means that the saw with modified gas and oil tank caps. It is not difficult to open such lids, but they have no chance to unscrew them on their own, as is the case with ordinary lids.

The choice between the 250th and 260th Stihl model

Readers have many questions about the choice between Stihl 250 and 260 chainsaws.

You can answer unambiguously. The Stihl 260 saw is better for the reason that it is a saw for professional use and, during production, completely different requirements were made than for the Stihl 250, intended for agriculture.

Accordingly, the cost of these models has a significant difference. Shtil 260 is sold almost 50% more expensive than Shtil 250. Of course, for those who do not mind paying for a professional tool and using it in private households, it is definitely better to buy Shtil 260, but the 250th also serves for many years and practically does not kill with timely MOT and normal attitude.

We recommend reading an interesting, detailed review of the Stihl MS 260 chainsaw.

Major malfunctions and do-it-yourself repairs

Like all gasoline units, the Stihl 250 chainsaw has major malfunctions that most often occur with it. Let's figure out what these malfunctions are and how to fix them yourself.

Why won't it start?

Sometimes there are situations when the saw may not start. As a rule, more than 50% of saws that did not start and were delivered to a service center did not start due to a violation of the cold start algorithm.

Saw start algorithm and the reason that Stihl 250 may not start

The instruction manual describes in detail the process of starting the saw, according to which, first you need to press the pumping primer several times, then lower the control lever to the lowest position.

After that, pull the trigger several times until the saw grabs (it starts and stalls for a split second, this phenomenon is also called a flash). Next, you need to move the control lever one position up and start the saw, then press the gas once to set idle.

In order for the saw not to start, it is enough to violate only one point, namely, do not move the lever one position up after the flash has passed. Thus, the saw will not have enough air and the fuel will flood the candle. To start the saw after the candle has been filled, it is necessary to purge the engine. How this is done is described in detail in the instruction manual.

Starts and stalls when you press the gas - what is the reason?

If the saw at idle works fine, and when you press the gas it stalls, then the reason is either interruptions in sparking or air leakage, or in the carburetor settings. To find out the exact cause, it is necessary to carry out a complete diagnosis of the chainsaw engine. Information on how to diagnose the engine and carburetor can be found on our website. The same should be done in cases where the Stihl 250 starts and stalls.

Why does it start badly

If the saw does not start well, but after it starts up, it works fine, then you should pay attention to the cleanliness of the filter elements. Check fuel and air filter. It is also worth inspecting the spark plug.

Important! a working spark plug on a properly running engine should have a reddish deposit on the electrode, and its gap should be 0.5 mm.

In some cases, the saw may be difficult to start due to too rich a mixture, which is easily eliminated by adjusting the carburetor.

Starter cord and spring problems

One of the common breakdowns on any chainsaw is a broken starter cord or a broken return spring. Repairing these faults is quite simple. To do this, remove the starter from the chainsaw (unscrew the four fastening screws). Next, with the help of wire cutters, remove the stopper from the central shaft of the starter (in some cases, the mechanism is fixed with a screw), then remove the washer and the trigger dog.

To replace the chainsaw cord, a coil is removed from the central shaft, on which the cord is wound and the torn element is removed from the mount. A strong knot is made on the new cord, after which the cord from the end opposite the knot is threaded into the landing hole on the coil and pulled through it.

Further, the coil, followed by the pawl and the stopper, are installed in their places, after which the cord is wound around the coil in a clockwise direction. The end of the lace is threaded through the starter housing and a handle is installed on it, after which it is pulled a little and fixed with a knot. Thus, it turns out that the starter coil is in a slight tension all the time, due to which the handle does not hang out, but keeps in its seat.

If it is necessary to change a broken spring, it is convenient to do this after the spool of cord has been removed. Install the new spring upside down. Further, the starter is assembled according to the algorithm described above.

Before installing the spring, it must be lubricated. Regular motor oil is suitable for lubrication.

Below is a video about repairing a starter on a Stihl chainsaw. The video is in German, but the procedure is shown in as much detail as possible and, if necessary, it can be repeated even for those who have never dealt with chainsaw repair.

Replacement of oil seals

Oil seals are a rubber element with a spring that is installed on the motor shaft and protects against air ingress.

As soon as the oil seals become unusable (over time, this happens on all chainsaw engines, because the oil seals are made of oil-resistant rubber and lose elasticity over time), they must be replaced, because air is sucked into the engine crankcase.

To replace the oil seals with the Stihl 250 on your own, you will need a special tool with which you can completely disassemble the chainsaw, as well as knowledge of all the nuances of disassembly and assembly.

Tip: if you have no experience in repairing gasoline saws, it is better to turn to professionals to carry it out.

Instruction for Chinese

A good example of how to properly assemble a chainsaw, what tools are needed for this and the sequence of the assembly order.

The chainsaw worked for several hours and broke. What to do? Demonstration of replacing the piston group with a Sterm chainsaw (made in China). Piston diameter 43mm and 45mm.

Each owner of a carburetor should have the necessary tools to make adjustments to this system. There are three adjustment screws that are located on the body of the device. They have their own markings:

• L - screw for correcting low speed.
• H - screw for adjusting high speed.
• T - regulates idling, in most cases it is used for experiments.

Read:

Chainsaw air filter

Before adjusting the carburetor, you need to prepare the device:

1. The engine warms up, that is, it starts up about 10 minutes before repair, and turns off at the start of work (see how to start a chainsaw).
2. Check and clean the air filter.
3. The chain is stopped by turning screw T as far as it will go (see chain oil).

To carry out a safe repair, you need to prepare a flat surface where you can carefully position the device, and turn the chain in the opposite direction. You need a tachometer. It determines the presence of a violation in the operation of the carburetor. When turning the screws, the sound should be perfect and absolutely even. If squealing notes are noticed, then the mixture is oversaturated.

Carburetor adjustment is divided into two main stages. The first is called basic. Do-it-yourself correct adjustment of the carburetor of the chainsaw 180, 250, 260 and all models of the stihl chain saw. It is done with the engine running. The second is performed when the engine is warm.

In order to carry out the carburetor tuning procedure successfully, you need to familiarize yourself with the operating instructions for a specific model in advance to identify additional features of setting up the device.

To properly set up the carburetor of a Chinese chainsaw, you must first remember the factory settings of the device, then turn on the engine. Subsequently, you will have to leave it running for several hours in order to accurately set your own parameters. Sometimes work is done once after ten minutes of engine operation, however, many Chinese-made models require special handling.

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Chinese chainsaw model

Adjustment procedure:

1. Activities start in idle mode. With the help of adjusting screws, you need to achieve a systematic increase in engine speed, so you should first let it work at low speeds. The deviation from the norm is the movement of the chain along the tire. In this case, you need to adjust the outer screws to the optimal position so that the chain remains stationary.
2. The transition to medium speed is carried out. Sometimes the engine will smoke. This defect can be eliminated by tightening the screw to supply a leaner fuel mixture.

In this case, the smoke will disappear, but the engine speed will increase. It is necessary to adjust the settings until it reaches a level where, when you press the throttle, the engine smoothly picks up speed, no sharp jerks or interruptions are heard.

• The engine of the device is being checked. The chainsaw is transferred to the minimum speed, and then the lever is pressed rapidly. At the maximum pressing it is maintained for 3 seconds. If there is a malfunction in the engine, you need to gradually loosen the screw until the optimum position is reached.
• The chainsaw should work for several hours in real conditions. It is necessary to engage in sawing wood, and then inspect all the elements involved in this event. If there are deviations, they must be corrected using adjusting devices. When all defects are eliminated and the optimal settings for supplying correctly concentrated fuel are set, the process of setting up the device can be considered completed.