How to Clean the Carburetor on a Shtil Chainsaw

Adjusting the Carburetor of the Stihl 180 Chainsaw with Your Own Hands

Content

Adjustment

chainsaw carburetor made in Germany

In the structure of each chainsaw there is such an element as a carburetor, the role of which is to organize the fuel mixture to supply it to the engine. But sometimes, when there are problems with the tool, the chainsaw carburetor is regulated in Germany by positioning the amount of fuel and air mass. When setting up this device in gasoline models of the 230 or 180 series, it is necessary to clearly understand the cause of the failures, where the following stand out:

Lack of gasoline in the system, accompanied by engine malfunctions;
excess gasoline, expressed by a large amount of exhaust smoke and high noise levels;
turning the chainsaw chain at idle speed.

Today, the correct adjustment of the carburetor is shown in videos from many masters, where options for repairing the carburetor of a brand 250 chainsaw and other contract models are presented. The basis of such operations is the control of the screws, which are responsible for the level of supply of the air-fuel mixture of the saw and the number of revolutions during idle rotation of the engine. At Kosa Motors, the experts will help you quickly solve this problem. We also have everything you need for gas powered tools, where you can buy a trimmer line or purchase a new saw chain.

Carburetor adjustment 180. Main steps

If a situation arises when the tool needs repair to improve performance and fuel economy, adjusting the carburetor and all accompanying operations will be a mandatory measure. So, when adjusting the saw 80 carburetor system, you must:

Clean your fuel tank and air filters for better performance.
Identify the H, L and S screws on the carburetor.
Using the indicated screws, carry out the basic adjustments of the stihl 180 mixer, made with the engine turned off: using the instructions, specify the exact angles of rotation of the screws H and L, adjusting the ratio of gasoline and air, where screw H is the maximum high-speed screw that controls the barrel; L. minimum speed screw; S. Idle speed precision screw. When setting the main values, slowly turn H and L clockwise, after stopping, return to position 2, turn back.
Turn on the engine and make final adjustments to the carburetor yourself. To find the highest idle speed, turn screw L in different directions. Once the maximum is found, the screw returns 1/4 hours. In the case of a chain run, the idle speed screw returns until it stops completely.
Carry out a technical check and adjust the acceleration and maximum speed.

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Video review of carburetor repair

using a new repair kit of gaskets and membranes, adjustments.

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How to set up a STIHL carburetor

MIZ
180
How to set up
a STIHL carburetor
MIZ
180
Basic malfunctions.

A properly tuned 180 carburetor system will get the maximum speed of the chainsaw with maximum performance when the quality of work and fuel consumption receive the best balance. In you can get detailed information about self-tuning of chainsaws and other gasoline-powered wood and vegetation tools, for which you can pick up and order motorcycle parts from any manufacturer, lawn mowers, gasoline and electric saws on the company's website.

Checking the correct carburetor adjustment

Checking the 260 chainsaw and other series for the correct carburetor setting is carried out in two stages, where 1. it is performed during the configuration of this device, 2. when performing the working tasks of a gasoline tool. And so it runs:

Checking the maximum speed when setting carburetor saw blades produced by calm. At the highest speeds there will be an ignition break, which can be adjusted by turning a small screw relative to the clock. Once the ignition is aligned, the test is complete.
Checking the acceleration of a chainsaw when adjusting the carburetor assembly of a Chinese saw. This is done by gently pressing the throttle button, at which the engine must accelerate confidently to maximum speed. For a slow increase in speed, retraction against the clock of the L regulator is required, starting from 1/8 of a turn.
Check the accuracy of the carburetor chain adjustment MS 660 or the Chinese ones you have at idle, for engine stability, and absence of chain movement.
Perform minimal manipulations in working mode with the tree.

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The same actions are permissible when servicing hedge trimmers with faults. But if you have more global problems, the Kosa Motors specialists will help you, who will carry out all the actions as quickly as possible. In addition, for repair situations, the online store offers the necessary parts, such as a Chinese chain for a chainsaw or piston group elements, ignition and much more.

Chainsaws. These are very effective and efficient tools that can be used when it comes to processing trees and wood for lumber or firewood. But for their work

Along with such basic elements of a chainsaw as the engine, carburetor and oil pump, the saw chain plays the final role. Because the condition of the chain is directly reflected in the operation of the saw itself. And if

How to properly adjust a factory saw

Carburetor adjustment is divided into two main stages. The first one is called basic. It is performed with the engine running. The second is performed when the engine is warm.

To carry out the carburetor setup procedure successfully, you need to read the operating instructions for a specific model in advance to identify additional features of setting up the device.

First stage

The adjusting screws for the highest and lowest speeds should be moved clockwise until the highest resistance is met. When the screws reach the stop, you need to move them in the opposite direction and leave them 1.5 turns.

Main stage

The engine is turned on at medium speed and warms up for about 10 minutes. The screw responsible for adjusting the idle speed should move clockwise. It is released only when the engine reaches stable operation mode. It is necessary to ensure that the chain does not move during this process.

In idling mode, the engine may stall (the reason is here). In this case, you must immediately turn the adjusting screw clockwise until it stops. Sometimes the chain starts to move. In this case, turn the adjusting screw in the opposite direction.

Read also: Manual pipe benders for round pipes

Checking acceleration operation

Need to do a little research. Acceleration of the device is initiated. It is necessary to evaluate the proper operation of the engine during maximum speed. When the engine is functioning correctly, it means that 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, you must use the screw marked L. It turns counterclockwise. Moderate movements must be observed, since the turn cannot be more than 1/8 of a full circle.

How to adjust the maximum number of revolutions

To limit this indicator, you need to use a screw marked H. To increase the number of revolutions, turn it clockwise, and to reduce them in the opposite direction. The maximum frequency should not exceed 15000 rpm.

If you make this figure larger, the device’s engine will wear out, which will lead to problems in the ignition system. When rotating this screw, you need to take into account the ignition processes of the device. If the slightest malfunctions appear, then the maximum speed value must be reduced.

Final check at idle

Before this procedure, it is necessary to carry out a full adjustment of the carburetor components when operating at maximum speed. Next, you should check the functioning of the device in idle cold mode. When the correct adjustment parameters are achieved, you will notice that the carburetor design closely matches the following criteria:

When the idle cold mode is activated, the chain does not move.

When the accelerator is pressed even slightly, the engine accelerates at an accelerated pace. With gradual deepening of pressure, you can notice that the engine speed increases proportionately, reaching the maximum permissible values.
When the engine is running, you can compare its sound to a four-stroke device.

If violations are noticed in the given parameters or the device has not been fully adjusted, you need to perform the main setup step again. Sometimes actions are performed incorrectly. In this case, the device may fail due to the loss of the correct node settings. In this case, you will have to contact a specialist.

Disassembling the carburetor if necessary to check or repair components

The design of different carburetor models is almost the same, so when working with them you can use the standard scheme. All elements must be removed carefully, and then laid out in the order given below , so that you can successfully place the items in place after the completion of the repair work.

The top cover is removed. To do this, you need to unscrew the 3 bolts holding it in a circle.
The foam rubber is also removed, since it is the upper component of the filter that conducts air.
The fuel hose is removed.
The drive thrust is output directly to it.
The cable end is disconnected.
The gasoline hose can be completely removed if you systematically pull it off the fitting.

To finally prepare the carburetor for major repairs or replacement of the smallest parts, you need to carefully disconnect it from the main system . Sometimes further disassembly is required. You should unscrew the components carefully and put the fasteners in groups, as these small parts are easily lost.

How to properly adjust a Chinese-made saw - adjustment instructions

To correctly configure 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 carried out only after ten minutes of engine operation, but many Chinese-made models require special handling.

Adjustment procedure:

Activities begin in idle mode . Using the adjusting screws, you need to achieve a systematic increase in engine speed, so you should first let it run at low speeds. A deviation from the norm is the movement of the chain along the bus. In this case, you need to adjust the outer screws to the optimal position so that the chain remains motionless.
The transition to medium speed speed is carried out . Sometimes the engine starts to 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. You need to adjust the settings until you reach a level where, when you press the throttle, the engine smoothly picks up speed, and no sudden jerks or interruptions are heard.

Before purchasing, we recommend that you familiarize yourself with the rating of chainsaws for reliability and quality. Take a look at the video: