Installation of a carburetor on a chainsaw
Before adjusting the carburetor on a chainsaw, you need to understand the principle by which it works.
- When the motor starts, the air damper located in the lower part.
- A vacuum caused by the piston is created in the air channel and the float chamber, as a result of which the air flow is absorbed through the diffuser.
- The intensity of the absorption of the air flow is regulated by the position of the air damper.
- Gasoline enters the tanker entered a float chamber.
- The speed of gasoline from the chamber to the diffuser is regulated by jackets.
- In the diffuser, gasoline is mixed with air.
- The prepared fuel mixture falls into the inlet channels, from where it is sent to the cylinder combustion chamber.
Millist Töööriista on Vaja Karburaatori Reguleerimisecs
Karburaatori Seadistamiseks ja reguleerimiseks kasutatakse järgmisi tööriistu:
- Tahhomeeter (spetsiaalne seade karburaatori seadistamiseks, selle abiga saab kettsae omanik kindlaks teha, milline on selle mudeli maksimaalne mootori pöörete arv, ja seejärel teha parandus vastavalt tootja soovitustele);
- Reguleerimisvõti (spetsiaalne tööriist, mis on sageli saadaval ainult teeninduskeskustes, ei ole kettsaagidega kaasas, kuna seda saavad kasutada kogenematud kasutajad, mis viib mitte häälestamiseni, vaid mootorsae purunemiseni).
Pange Tähele: Mis Taekhes Mudeli Mootorsae Karburaatori Seadistamist Ja Reguleerimist, Samuti Selle Remonti Peaksid Garantii Ainult TeenininDuskesskuse Spetsialistidiyalistidi.
Softumatud Katsed Karburaatorit Puhastada, Loputada Ja Olemasolevaid Tgrkeid Kөvaldada Ei Pruugi Soovitud Tulemust and.
Kettsae Karburaatori Tööo Remondi Reguleerimise Tööriistade ülevaade:
When you need to set the carburetor?
Initially, from the moment the tool is sold, all carburetors are adjusted and set up at the manufacturer. However, in the process of work, the settings are gradually being knocked down, and the functioning mode changes in accordance with the operating conditions. Signs of problems in the operation of the carburetor can be:
- Too high gasoline consumption, thick smoke comes from the exhaust pipe;
- The engine power is clearly not enough to perform ordinary tasks;
- Engine revolutions “swim”;
- After starting, the motor stalls either immediately or after a few seconds;
- The engine is generally impossible to start;
- “Shoots” chainsaws, harsh claps occur in the engine engine.
Note! The reason for the poor operation of the engine may be the wear of the piston group, then the adjustment of the carburetor of the chainsaw does not give a complete resolution of the problem. Also, no setting will give the expected effect if in parallel the node is not cleaned of small particles of garbage. The most problematic elements are nozzles and filters, both gasoline and air.
It must be taken into account that during the run.In the new engine, the carburetor is tuned for reduced fuel supply, in order to limit the engine power. After the end of the runaway, the fuel supply increases to the nominal value. These settings are made using adjusting screws on the carburetor housing (usually two or three).
How to set up a chainsaw: simple leadership
It’s great that you have a chainsaw and you can use it. But do you know how to care for him correctly?
For your safety and the durability of the car, you should learn to set up a chainsaw, especially if you use it regularly.
You do not need to do this on a completely new unit, but if you have had it for many years, you may need to know how to adjust the carburetor of the chainsaw.
Although you can always entrust this to a professional, you can save more money by doing it yourself.
Here are some methods of setting up a chainsaw.
How to set up a chainsaw
Safe and efficient use of chainsaws requires regular maintenance.
While you support it, you will not have problems with performance.
The carburetor is the main component that needs to be checked to make sure that the machine works efficiently.
Before learning how to regulate a chainsaw carburetor, at first you would like to know how the carburetor works.
How the carburetor works?
The main task of the carburetor is to produce a small amount of fuel and mix it with the air entering the engine.
This is necessary to ensure the uninterrupted operation of the engine.
You need to configure the carburetor to prevent two problems:
The engine runs on a lunch mixture
Chainsaw Fuel Screws Adjustment to Correct Bog Down, Won’t Idle, Won’t Run, Won’t Start?
If the carburetor does not produce enough fuel for mixing with air, the engine will operate on the lunch mixture.
A chainsaw will either not work properly, or will be damaged.
The engine works on an enriched mixture
If the carburetor supplies too much fuel along with the air, the engine will work on the enriched mixture.
A chainsaw either does not work properly, or works with a lot of smoke.
He will also work poorly and spend a lot of fuel.
Adjustment of the benzopila carburetor is made so that it releases the desired amount of the mixture and prevents the occurrence of any problems.
Learning to configure a chainsaw is exactly what you need to know so that there are no such problems.
How to adjust the carburetor of the chainsaw
Setting up or adjusting the carburetor may be a difficult task if you do not know where to start.
We will spend you through different stages to help you understand how to set up a chainsaw yourself.
Find three adjusting screws
You need to find three adjusting screws.
This is an adjusting screw that controls how widely the throttle is opening when the trigger releases.
If it is too low, the engine will stop working when the trigger is released.
On the other hand, if it is too high, high idle speed will actually lead to the inclusion of a centrifugal clutch.
As you have already guessed, it is very dangerous, so you must prevent this.
This adjusting screw often has a “l” label on a carburetor. It regulates the composition of the fuel mixture at idle.
If the mixture is too rich, the engine will overload and stall.If it is too impoverished, the engine will turn on and start pumping.
This adjusting screw has a “h” label on a carburetor. It regulates the mixture of air and fuel at the cutting speed.
The adjustment of this screw is crucial, since it depends on it how the saw will work during cutting.
Check the air filter, muffler and exhaust
Before you start adjusting the chainsaw carburetor, check the air filter and make sure that it is clean.
If the air filter is clogged, it will be difficult to understand when setting up whether the chainsaw works correctly.
In addition to the air filter, you must check the exhaust hole and a muffler for the presence of soot.
If you run a carburetor with a clogged exhaust, you cannot determine exactly whether the adjustment of the chainsaw is required.
Make sure you checked everything and cleaned the chainsaws before setting up so that you can make the most accurate conclusion.
Run the saw
After you have found all the adjusting screws, the next step will be the launch of the configuration process.
First you need to start the saw and let it warm up for several minutes.
After warming up the engine, let it work at idle for about 30 seconds.
Then take the saw and raise the handle so that the rod is directed down.
Launch the gas station Carburetor adjustment
The adjustment will depend on how your chainsaw will work when you raise the handle.
If the chainsaw suddenly stopped working, find the adjusting screw and tighten it.This will reduce the amount of fuel entering the carburetor.
After that, raise the handle up again and continue to tighten the screw if the chainsaw has stopped working.
If you raise the handle, and it continues to work, increase the speed of the saw.
If acceleration begins to disappear, weaken the screw of low speed. This will increase the fuel supply to the carburetor.
Continue to speed up the saw until acceleration becomes normal.
If the acceleration is normal, turn on the saw on idle for about five to seven seconds.
If the chainsaw “screeches” during the revolutions, it is necessary to immediately loosen the speed screw.
Continue to increase the speed and adjust the screw until the chain saw begins to tremble during rotation.
If you notice that the chain continues to rotate, even when the saw is idle, you should adjust the tension screw to stop so that it stops.
Be sure to fix it, as it can be very dangerous when using a chainsaw.
Favisure of the carburetor of the chainsaw Urals: Eliminate factory shortcomings
Since the KMP-100 carburetor was the only one published in the USSR, several million were released. With such mass and long.Term production, the product could not be raw and unfinished. All defects were taken into account, finalized already at the beginning of production, and factory, structural and technological, deficiencies in the KMP-100 and KMP-100U did not have.
All problems they have from improper operation (low.Quality fuel) or simply from physical wear and tear over time.
The KMP-100U carburetor requires improvement when the engine from the Ural 2T chainsaw is used according to another purpose. For example, like a boat motor.
In this case, the alteration is not subject to the carburetor itself, but the idle adjustment system located on the gas handle.
What other carburetors put on a chainsaw Ural 2t electron
An electron was often placed on the Urals 2T chainsaw, and are placed today, carburetors from other two.Stroke engines with the following engine parameters:
Sometimes carburetors were installed from significantly more powerful engines. For example, from motorcycles “Minsk”, “Sunrise”. True, there is a drawback, the supply of fuel-air mixture increases significantly. It was reduced by adjusting the screws. The engine worked, but the overrun of the fuel was significant.
With the onset of sale, after 1991, imported chainsaws and spare parts for them, similar power, began to use carburetors from them.
WALBRO carburetor on a chainsaw Ural
On a chain of the Ural 2T, the electron has proven itself well by the German carburetor from the STIHL MS 660 chain of the chainsaw. Its fuel mixture is almost entirely corresponds to the Ural engine 2t electron. Ideal correspondence is achieved by adjusting screws. The landing dimensions are also almost identical (between the holes on the carburetor and the studs on the engine). The difference of 1 mm is eliminated, flooding both holes with a file, each by 0.5 mm.
This is how the Walbro carburetor looks like a chainsaw of the Urals
How to put a Chinese carburetor on a chainsaw Ural
The ZID native plant in Perm no longer produces the Ural 2T chainsaws and spare parts for them. On sale there are KMP-100U carburetors of Chinese-made worth about 1,500 they are not always of good quality. And users prefer to put them not, but carburetors from Chinese mopeds.
These are high.Quality products that have the following advantages:
Progress does not stand still, so modern carburetors are much superior to the old KMP-100 in all respects. Carburetors are used from the following mopeds (scooters):
The carburetors of these mopeds are almost the same, and the characteristics of the engine are similar to the engine of the Ural 2T chainsaw electron.
The landing dimensions of the KMP-100U and carburetors from Chinese mopeds are different. Therefore, they are placed on chainsaws through an adapter.
In this video you can see how the Urals 2T electron with a carburetor from a Chinese moped really works:
The latest modification of the Ural chainsaw-2T electron with the KMP-100U carburetor began to be released more than 30 years ago. She gradually goes into history. But it seems that it will not leave soon, due to high maintenance.
How to adjust the carburetor on a chainsaw correctly?
To configure the node, install the tool on a solid even surface. It is best to regulate the gasopyle carburetor in a place protected from dust and moisture.
The process of setting up the node should look as follows:
- First you need to unscrew the fasteners and remove the protective file of the saw. This will allow you to inspect the carburetor and, if necessary, clean it;
- Next, you need to extract the standard tool air filter. If the saw is equipped with an additional foam insert, then it also needs to be removed;
- After that, you need a screwdriver, which needs to tighten the bolts with the labeling h and l clockwise until it stops. You need to do this very carefully so as not to break the bolts;
- Then both screws should be unscrewed by 1.5 turns in the opposite direction;
- Next, you need to start the chainsaw motor and let it work for about 7 minutes;
- As soon as the motor cylinder heats up, you will need to start turning the Bolt B to the moment until the ICE becomes at maximum speeds. Immediately after this, the bolt must be turned into 1/4 turnover in the opposite direction;
- Then you need to configure the operation of the motor at high speeds. To do this, you need to connect an electronic tachometer to the engine, and start turning the bolt H until the indicators on the device’s board coincide with the instructions for the recommended maximum speeds in the instructions for the saw;
- At the end, it remains to set up the work of the internal combustion engine at idle. To do this, you will need to slowly twist the t bolt against the watch arrow until the engine becomes stable and without failures. If the motor began to stall, then the bolt t should turn in the direction of the watch arrow.
To configure the carburetor on the chainsaw, you should work as accurately as possible with adjusting bolts. Excessive twisting of the screws will lead to an increased load on the engine and other important nodes of the garden tool.
Repair of the Makita chainsaw carburetor. Makita chainsaw carburetor adjustment
Makita chainsaw carburetor adjustment affects the productivity of the device, quality of operation. For the correct setup of the working unit of equipment, it is important: to understand the principle of its operation, to have the necessary tools, to carefully relate to fasteners, as well as closely located elements responsible for the functioning of the chainsaw.
Features of the Makita carburetor setup
Makita chainsaw carburetor operates on the same principle as carburetors released by other manufacturers. This important detail is responsible for mixing fuel with air. In order for the operation of the Makita chainsaw to be adjusted with the operation of the device. This will help protect the equipment motor.
- Eliminate the risk of creating a “poor” mixture by a carburetor;
- Minimize the risks of creating a oversaturated mixture, which negatively affects the work of the motor, provoking quick wear.
If you need a new carburetor on the Makita chainsaw (you will configure, focusing on standard instructions), choose the one that is identical to the original.
- The basis of the basics is a tube for passing air, which is connected to the damper (in the middle). The location of this part affects the amount of air that comes to the engine when operating.
- Diffuser. It is not difficult to identify it, with a thorough consideration of the components of the carburetor. This part looks like a narrow tube, the main function of which is the control speed adjustment of the air flows.
- The channel supplying fuel from the float chamber (connected to the nozzle).
- A separate design that is released against the background of others is a float chamber that looks like a standard tank for fuel liquids.
Randies for adjustment
Makita chainsaw carburetor adjustment is carried out with a set of adjusting screws that are in the case of this design:
- A screw with labeling L. Adjusts low speeds;
- A screw with labeling h, at the expense of it, high speed settings are carried out;
- Screw t to configure the carburetor operation at idle.
- The engine is left to warm up (run the chainsaw for 10 minutes).
- Air filter check and cleaning this part.
- Stop a circuit turning the screw with marking T (turn until the stop).
A tachometer is used to diagnose problems of carburetor operation.
Important! Masters advise listening to the sound that the screws make when turning. “Screeching” sound may indicate oversaturation of the mixture.
Carrying out the carburetor of the chainsaw in two stages:
Important ! Some setting steps must be adjusted, depending on the model of the macita chainsaw. In order to do everything right, read the instructions.
Briggs Stratton Small Engine Carburetor Replacement Part # 799584
- We turn the screws for adjusting high and low revolutions to the stop (turn clockwise).
- At the time of the meeting of resistance, make a half turning back.
TRACK WITH THE MARKING T, move in the direction of the clockwise. Release it only when the engine starts to work stably. In this case, take into account that the chain at this stage should not move.
What to do if the engine turns off during the idle setting? In this case, it is important to quickly crank the screw until it stops (turn clockwise). If the manipulation leads to the movement of the circuit, the adjusting screw is slowly rotated to the previous position.
How to check if the carburetor is correctly configured?
To do this, you need to accelerate the operation of the chainsaw. Run the engine at maximum speeds to objectively evaluate its work. When you click on the accelerator, the speed of rotation should reach approximately 15 thousand revolutions per minute. This indicator indicates that the tuning of the carburetor was successful.
If you cannot achieve such an indicator at large speeds, and acceleration is slowly passing, you need to adjust the carburetor again, working only with the screw on which there is labeling l. Rotate it counterclockwise. In this case, rotate the screw slowly so that the turn does not exceed 1/8 of the complete rotation.
If the problem arises the opposite and the maximum rotation indicators must be reduced to 15 thousand, you need to rotate the screw marked with the letter H. Rotate it gradually, slowly in the direction of the opposite movement of the clockwise.
Reducing the revolutions to the optimal value will reduce the risk of engine operation for wear.
Useful video about cleaning and setting up the carburetor:
The mixture is called normal if gas and air are connected in it with a weight ratio of 1:15. The engine power when operating on such a mixture is 4-5% lower than the maximum, and fuel consumption is about the minimum possible. The engine develops the greatest power when it works on an enriched mixture, in which this ratio ranges from 1: 12.5 to 1:13. In those cases when it is necessary to achieve the greatest efficiency, the amount of air, which arrives in 1 kg of gasoline, increases to 16-16.5 kg (impoverished mixture). With a further increase in air content in the mixture, it is increasingly impoverished and soon it becomes inoperative. If, on the contrary, reduce air in the mixture, then with a ratio of 1: 12.5 to 1: 6.5 (rich mixture) the engine “badly pulls” due to a large loss of power and works extremely uneconomically.
Carburetor adjustment is carried out only on a hot engine, which is why it is necessary to warm up the engine before the start of adjustment. The quality screw of the mixture is completely wrapped, and then twisted for half a turn. The turnover. Rotating the idle adjustment screw, achieve the minimum stable rotation of the crankshaft, and then gradually turn the quality of the mixture (lunch mixture) until interruptions in the occurrence of the engine. After slowly wrap the idle screw (enriching the mixture) until the engine starts to work steadily. The quality of the mixture is again wrapped, reducing the speed of rotation, finding a new position of the idle screw. As in the first case, these operations are repeated until the minimum, but quite stable speed of rotation of the crankshaft is obtained is obtained.
The correct adjustment of the amount of the mixture is checked with a sharp opening and closing of the throttle. If the engine stalls with a sharp opening of the throttle, you should wrap the quality screw for 1/4-1/2 turns (the mixture is enriched), and if it stops with a sharp closing of the throttle, turn out the same (the mixture will be depressed).
Correct adjustment of the carburetor is the key to the minimum fuel consumption at maximum power output from the engine.
(Diagnostics, setting and repair of carburetors of Japanese motorcycles)
Habitual picture: a person bought a motorcycle. In normal condition, and the mileage is small. Only the trouble is. The motor with interruptions works: poor launch is adjacent to the midst of medium and high speeds. There may be two reasons: either the ignition is junk, or a power system. Electronics on the “Japanese”. The standard of reliability and rarely fails. But the carburetors are praised much more often. Permanent author of the magazine Sergey Rybakov is familiar with them firsthand. Behind his shoulders many years of practice of repairing motorized vehicles.
Carburetor problems usually declare themselves when a motorcycle is revived after a long hibernation. But the engine is iron, you object to him that he will be. The matter is in gasoline. Having blabbed in the tank for a couple of years, the fuel becomes absolutely unsuitable (its shelf life is only six months), firstly, in the process of storage in fuel, irreversible changes occur easily gaping fractions. Secondly, when in contact with air, gasoline is continuously oxidized and the resin increases in it. Its color changes to brown.
It seems to be okay. Washed the tank and Katya. But not everything is so simple. If during the detention the tap missed fuel, and it often happens, the matter is bad. Over time, as a result of the constant evaporation of gasoline, a crust is formed on the walls inside, and small.Caliber nozzles are clogged completely. These deposits hardly take even strong solvents. I will advise the use of imported drugs specially designed for cleaning carburetors. There are also fakes among them, they will give the smell of kerosene and flavorings. In severe cases, it is necessary to break through the nozzles mechanically. A thin cleansing wire for needles from domestic syringes