How To Clean A Stihl Chainsaw Carburetor
How to completely clean a chainsaw: carburetor, filter, muffler
During the operation of a tool such as a chainsaw, its owner often encounters a number of problems, one of which is a clogged carburetor. This can happen if the chainsaw is fueled with poor quality gasoline or foreign debris gets into the fuel tank. In order to clean the chainsaw carburetor, you must first disassemble it.
We clean correctly
To clean your chainsaw properly, you need the following tools:
- Phillips and flathead screwdriver,
- wrenches with different head sizes,
- special cleaning compound, cleaning cloth,
- ultrasonic cleaner.
The set of tools can be seen in the photo.
Cleaning the carburetor of the chainsaw should be done according to the following algorithm:
- First, you need to drain the remaining fuel from the fuel tank. Remove the cover of the chainsaw by unscrewing the fasteners. We take out the filter and disassemble the case, removing the nuts and clamps if necessary.
- Remove the fuel mixture supply hose from its retainer, unscrew the fasteners of the carburetor top cover. Then we remove the top cover and the blue gasket. this is the membrane of the fuel pump. To the left of the case are the spring brackets, remove them, and then the screws. It is advisable to sign the parts and schematically fix the places from which they were removed so as not to confuse anything at the time of assembly.
- Remove the lower carburetor cover, unscrew the screw and remove the needle valve and the spring under it. Then, with a longitudinal force, remove the air damper and its axis.
- Remove the throttle flap, drive lever and throttle axle.
- We lay out all the removed carburetor parts on a flat surface and inspect for integrity. Highly worn parts must be replaced with new ones.
- Using a specialized cleaning agent, rinse the parts and dry them with a lint-free cloth. The pipes must be blown out under pressure using a pump.
- To achieve the maximum effect, you can clean the carburetor on the Stihl chainsaw using a special cleaning bath, which is based on the cavitation effect. The bath is filled with diesel fuel, the carburetor parts are immersed in it for a few minutes. At the end we dry the parts with a pump.
A detailed video of the cleaning process will help you get the job done right.
After all the products are dry, you need to assemble the carburetor. Usually the detergent evaporates completely within 24 hours. It is better to wait a day after cleaning, as the residues of detergents on the parts can get into the fuel compartment, and during combustion they will emit toxic gases.
Another important nuance associated with disassembling the chainsaw is that it is necessary to very accurately set and adjust the needle valve petal, otherwise the chainsaw may not start. You can use a razor blade to check if the petal is set correctly. Having installed it on top, we see how the petal rotates freely. If there are no problems, then everything is in order. you can continue the assembly. If stroke problems do arise, then the petal must either be pressed down or bend the edge on it.
Chainsaw “bog” what to look for and how to fix
How to clean your chainsaw filter
It is often necessary to clean the filter on your Husqvarna chainsaw after every use. The cleaning process itself, depending on how dirty the filter is, can be done in two ways:
- Mechanical cleaning method, which is filter blowing.
- If the degree of contamination is higher, the filter is washed in soapy water.
Important! It is forbidden to wash the filter in aggressive solutions: gasoline, diesel fuel, acetone.
How to clean a muffler on a chainsaw
Taking timely measures to clean your chainsaw muffler can significantly extend the life of your tool. There are several reasons for muffler contamination:
- long service life,
- poor quality of the filled oil,
- incorrect carburetor settings.
To check the condition of the muffler, it is necessary to dismantle it and look inside. If you need to remove the muffler on the Stihl chainsaw, you need to remove the muffler fasteners, the muffler itself, the plate and the reflector.
If you find carbon deposits inside the muffler, then this problem can be solved in two ways:
- Mechanical method (cleaning is carried out with brushes, sandpaper and special products). This path is possible if the muffler is disassembled.
- In the case of a non-separable muffler, special cleaning compounds are used, in which the muffler is soaked for several hours.
Correctly performing all actions, you can easily clean the chainsaw, extend the service life of the tool and protect yourself during operation.
Chainsaw carburetor adjustment: we analyze all the technical nuances of the work
Summer cottage construction and repairs are not complete without the use of a chainsaw, as well as garden maintenance. Due to a malfunction of the tool, all the work can get up, so it is so important to be able to disassemble it yourself, find problems and fix them. With enough experience and dexterity, it is even possible to adjust the carburetor of a chainsaw. a complicated procedure, or rather, jewelry. How to carry out the adjustment procedures, we suggest you disassemble today.
Chainsaw fine tuning
The exact adjustment to which the carburetor of the Ural chainsaw is subjected should be carried out only in a heated state, preferably by specialists with the necessary equipment. The order of adjusting the screws is as follows: first screw L, then H and finally the idle screw T.
First, the highest idle speed is determined. To do this, screw L is slowly turned and after the position of the highest revolutions is found, the screw is turned by ¼ of a turn against the clock.
The H screw affects the power and speed that the carburetor of the Stihl chainsaw has. It is necessary to warm up the engine at full speed for 10 seconds, turn the screw ¼ of a turn against the clock. Let the engine run, and then check the maximum rpm with a tachometer.
Fine adjustment of the T screw is carried out with the engine running, the screw is turned clockwise until the saw chain starts to rotate. Then the screw T must be turned in the opposite direction until the chain stops.
To adjust the imported husqvarna chainsaw carburetor, it is best to contact a specialist who can correctly adjust all the necessary parameters using a tachometer.
The cause of a motor malfunction, especially if it functions normally at low speeds and stalls under loads, is the clogging of the spark arrester of the muffler with combustion products, which prevents normal exhaust. In this case, do-it-yourself Husqvarna chainsaw repair consists in removing the muffler, if it is collapsible, then disassembling it, and wet cleaning the unit from carbon deposits using a detergent.
After washing, dry the non-separable muffler with a hairdryer. Remember that soot contains substances that are carcinogenic, and dry cleaning, after which they can be inhaled, is unacceptable. When removing the muffler, plug the engine outlet with a clean cloth.
The muffler can become clogged for the following reasons: due to the use of a fuel mixture with a large amount of oil (the oil level is recommended by the manufacturers), the use of low-quality oil or oil, which is not intended for two-stroke engines.
How to clean a carburetor on a Stihl chainsaw
The section is devoted to motorized equipment for gardening, park and earthwork. Here you will find information about the brands under which lawn mowers and tillers, chainsaws and cultivators are sold, everything that makes the work of summer residents, gardeners and communal workers easier. The equipment is subdivided into gasoline and electric (powered by accumulators and batteries as well). We have long been accustomed to tillers and cultivators; almost every second owner of a country house uses a chainsaw. In the section “Gardening equipment” you will find information about many other devices that will make your work pleasant and easy, and your site. an object to follow.
Trimmers. petrol or electric lawn mowers are wheel and hand-held. The mower is one of the trimmer options, adapted only for a certain type of grass. The shredder converts trash and wood waste into a homogeneous mass for compost and mulching. A garden vacuum cleaner is useful both for cleaning areas covered with vegetation and for cleaning paved areas and paths. Any summer resident knows about the purpose of a sprayer and an electric hoe, but many only guess what a verticutter and a scarifier are. The verticutter removes the dense top layer that forms on the soil in early spring and late autumn. Scarifier (another name. aerator), in addition to cleaning the packed layer, makes grooves in the soil. Information about where, how and under what brand all this is produced is also in this section.
Source: http: // www. id4.ru/top/?r=sadovaya-technikau=stihl#44622
Natural wear and tear
Some parts of the chainsaw, which are subject to natural wear and tear, must be replaced after a certain period of useful life. Their breakdown is a regularity and not at all a malfunction. Wearing parts include a tire, a chain, a drive sprocket, anti-vibration system units and others.
If you do not repair your husqvarna chainsaw with your own hands and replace wearing parts in time, then their excessive wear will affect other parts of the chainsaw in the most negative way. In particular, if the drive sprocket and tire are not changed in time, then the increased vibration will have a bad effect on the crankshaft bearings. The limit of the depth of development of the sprocket teeth must reach 0.5 mm.
Although in practice, sprockets are often operated until wear of 1 millimeter or more, unaware that this causes an increase in the load on the crankshaft bearings, accelerated failure. When three or four chains are worn out, you need to change the tire directly, if its wear reaches its limit by this time.
Chainsaw bar wears especially in areas where cutting occurs most often, usually on the underside of the guide bar. Whenever changing the chain, the bar must be turned 180 degrees around the horizontal axis for even wear.
Now you know that you can troubleshoot a chainsaw with your own hands. To do this, you should always have a manual for the repair of chainsaws at hand. And in order to finally understand this difficult matter, we suggest you watch a video about repairing a chainsaw, which will help to consolidate all the acquired knowledge in practice.
Source: http: // strport. ru / elektrooborudovanie-svet-osveshchenie / remont-benzopily-svoimi-rukami
How to set up a chainsaw carburetor
In general, almost all carburetors, be it a Stihl chainsaw carburetor or a Ural chainsaw carburetor, have three adjusting screws. The screw, designated T, adjusts the idle speed. The L screw controls low rpm and the H screw controls the high rpm, these elements also regulate the fuel / lubricant mixture and air ratio. While tightening the screws clockwise, the carburetor of the Stihl chainsaw is set to low revs, as the fuel mixture becomes leaner. When unscrewing in the opposite direction, the fuel-lubricating mixture is enriched, therefore, the speed increases. The T screw, which is, for example, the carburetor of a husqvarna chainsaw, regulates the idle speed. Turning clockwise increases the idle speed, in the opposite direction decreases.
The basic setting that a chainsaw carburetor undergoes occurs at the factory during the testing of the tool. A more accurate carburetor adjustment is made after the first few hours of operation.
How to adjust a chainsaw carburetor
The chainsaw carburetor is one of the components of the power tool. Many owners of such garden equipment are wondering how to regulate the number of revolutions in their unit. We will give the answer to this question in this article on adjusting the carburetor of a chainsaw.
Fuel supply system
If it was established by inspection of the spark plug that no fuel enters the cylinder, all reasons for this must be considered. In particular: non-flow of fuel from the tank due to the fact that a hole in its lid is clogged, while a vacuum is created in the tank, which prevents fuel from flowing out; insufficient flow or non-flow of fuel from the carburetor into the cylinder; contamination of the fuel filter, which is installed in the tank.
Insufficient fuel supply or lack of the correct ratio between air and fuel, which are mixed in the carburetor, occurs for the following reasons: due to an unregulated carburetor, clogged air filter, clogged filter mesh or carburetor channels.
Chainsaw repair, as a rule, is not complete without cleaning the air filter, since it becomes dirty quickly enough. When this happens, the ingress of air into the carburetor is reduced, at the outlet, the fuel mixture is too rich, and this in turn disrupts the normal functioning of the engine. The dirty filter must be removed for cleaning very carefully so that dirt does not get into the carburetor from it. Clean the filter or wash in water and detergent, dry and reinstall.
Correct the misalignment of the carburetor by adjusting it. This can be done with three screws. minimum and maximum speed. Carry out the adjustment in strict accordance with the instructions for repairing the chainsaw, non-observance of which often leads to engine damage. Some manufacturers of chainsaws leave one adjusting screw to exclude unwanted intervention by inexperienced users in the functioning of the carburetor.
If the carburetor adjustment did not help, it is recommended to clean the filter mesh and channels, and also check the membrane for integrity. The carburetor is one of the most complex chainsaw devices, therefore, it is necessary to start disassembling and cleaning it with an understanding of the responsibility of this operation. This unit consists of a large number of small parts that have the unpleasant feature of jumping out of their places unnoticed and getting lost irretrievably, so after disassembling this capricious device it may not be possible to assemble it.
It is either sucking in air somewhere, or something is clogged.
Basic troubleshooting for STIHL MS 180 chain saws is to disassemble, flush and blow out the carburetor, change the fuel filter in the tank, check the fuel hoses for cracks (can suck in air).
There is only one adjusting screw on the carburetor. at idle speed (this happens, twists, and the chainsaw starts working again).
The connection of the carburetor to the cylinder is reliable in terms of air intake. there is a plastic ring (no gaskets required).
Eliminating carburetor malfunction
If, as a result of the pressure on the gas, the chainsaw starts to stall, then the problem lies in the carburetor. Also, a sign of a malfunction of the carburetor may be a prolonged start of the chainsaw and the impossibility of gaining speed.
Most often, such a malfunction occurs as a result of wear of the rubber cuff, which is located on the piston of the fuel booster. As a result, air is sucked in when starting the tool. Basically, such a breakdown occurs after several years of using the chainsaw.
The elimination of this malfunction is carried out in the following sequence:
Step-by-step disassembly of the carburetor
Now we know how to fix a common carburetor malfunction. Observing all the rules, you can easily do these works with your own hands.
Stihl ms 180 carburetor repair
How to repair a carburetor on a quiet Miz 180 chainsaw.
Calm 250 chainsaw malfunction (carburetor chainsaw malfunction):
Immediately after winding, the chainsaw runs at an increased speed, and if you press on the gas, instead of starting to accelerate, it “chokes” and even stops. Or it does not start well, does not pick up speed and stalls (this chainsaw malfunction applies to other expensive chain saws with an accelerator pump in the carburetor).
The reason for the failure of the chainsaw: Worn rubber cuff on the piston of the accelerator pump in the carburetor (fuel booster). This leads to the intake of air by the accelerating pump, and the main jet injects a lean air-fuel mixture (mixed with a small amount of gasoline) into the diffuser, and the chainsaw first operates at higher speeds, and then “throttles” and nods. This occurs after 2-3 years of operation and usually occurs during the hot summer months.
Checking the ignition system
Chainsaw ignition system
If the tool does not start, then the problem may be hidden in the starter mechanism or in the ignition system. In the event that the starting device works normally, then it is necessary to carefully inspect the spark plug. It needs to be unscrewed and carefully inspected.
Particular attention should be paid here to the electrodes, on which plaque can accumulate. If there is a red-brown coating on the electrodes, then this indicates a serious malfunction of the entire starting system. So, the cause of the malfunction may lie in the carburetor.
If the ignition system works normally, but the tool does not work properly, then the problem may be associated with an excess of air-fuel mixture. Here you need to adjust the carburetor and clean the jets.
Do-it-yourself chainsaw carburetor adjustment
If during the inspection, carbon deposits were found on the candle, then this means that the tool is running on low-quality gasoline. Also, the cause of this may be a malfunctioning carburetor.
To solve this problem, you need to take the following steps:
- remove the carburetor and check it;
- if necessary, clean and adjust it;
- replace fuel;
- install the carburetor and check the tool in operation.
It is worth noting here that the carburetor is a rather complex unit. Therefore, if there is a need to repair it, then it is better to seek help from specialists.
Attention: the chainsaw should only operate on the fuel specified in the instructions. The use of low-quality fuel will lead to various malfunctions.
With this information, you can repair your Stihl 180 chainsaw at home. Of course, you need to take into account that more serious malfunctions are best eliminated at service centers.
Watch an overview video about diagnosing the lubrication system of the Stihl MS180 chainsaw:
Trimmers and chainsaws
1) STIHL MS 180 chainsaw malfunctions: Throttle wedges and finally the throttle key stops moving completely.
Cause: Transparent translucent resin on carburetor throttle shaft causing throttle grip. Tar is formed when gasoline dissolves a defective air damper coating.
Chainsaw repair: The carburetor throttle body shaft should be cleaned with acetone and the choke valve itself should be irradiated with tin.
2) Chainsaw malfunction: Chainsaw “does not pull”.
Cause: Clogged carburetor.
Chainsaw repair: Cleaning and cleaning the carburetor chains. Particular attention is paid to cleaning the carburetor to be cleaned with an additional filter (grill in the carburetor chainsaw). remove the largest carburetor cover, remove the membrane underneath and clean the dirt of the mesh in the groove (be careful not to lose this mesh). Of course. clean with a thin copper wire, rinse and blow through all the channels in the carburetor chainsaw.
3) Chainsaw Malfunction Calm 180: Chainsaw idle speed increased (idle speed adjustment is ineffective and unstable).
cause of malfunction: Air intake through the crankshaft oil seals or elsewhere.
Chainsaw Repair: Replace the crankshaft oil seals and check for other possible suction areas.
Chainsaw malfunctions 180
Oil supply repair
Often in the Stihl 180 chainsaw, the oil system is damaged. Such a malfunction can be determined by the dryness of the working circuit or the presence of a leak.
The solution to this problem must be started with a thorough examination of the hose through which the oil is supplied. The connection of the hose with the fittings is also amenable to inspection.
In the process of inspecting and repairing the oil system, it is also necessary to clean the filter. Contamination often leads to poor oil flow.
If there is an oil leak, it means that the tightness in the system is broken. This primarily concerns the hose and oil channels. Most often, such malfunctions occur as a result of mechanical damage to system elements.
The process of removing and cleaning the air filter
If, as a result of inspection, a violation of the integrity of the hose was determined, then it is replaced. If the damage is minor, then it can be hidden with a sealant. This radical way will reduce the cost of repairs.
4) Chainsaw malfunction: After disassembling the carburetor, the chainsaw is difficult to start, white smoke appears from the chimney.
Reason: When disassembling the carburetor, the spring is lost under the needle lever, as a result, the needle does not block the fuel supply, and the spark plug is “filled” with gasoline.
Chainsaw Repair: Locate and place the spring under the needle arm in the chainsaw carburetor.
5) Chainsaw malfunction: Chainsaw doesn’t start well, it doesn’t work well.
Reason: “Pours in” a gasoline plug due to sticking of a needle in the carburetor or a high-lifted rocker.
Do-it-yourself chainsaw repair: Flush and blow out the carburetor, install the rocker correctly.
Stihl 180 chainsaw performance
|Engine displacement (ml)||31.8|
|Max power (hp)||2.0|
|Max speed (rpm)||14000|
|Weight (without bar, chain, oil and fuel) (kg)||3.9|
|Fuel tank volume (ml)||250.0|
|Oil tank volume (ml)||145.0|
The main stages of work (removal of the carburetor)
The best option would be to watch a training video. Fortunately, there are dozens of them on the Internet. There they will tell you everything in detail and professionally. As the saying goes: “It’s better to see once than hear a hundred times” (in our case, read it). Schematically, this process can be written as follows: remove the protective cover, remove the rods and, finally, unscrew the unit to work with it.
Carburetor repair and cleaning without spare parts
There are situations in life in which it is simply vital to repair the saw, but the necessary components are not at hand. For such cases, there is the following method: take out the carburetor, remove the membranes, and then put the rest in acetone and let it soak. Acetone will remove debris that is blocking the passage of various fluids. This method will not hit your. but it is not reliable. Such repairs will not ensure the long operation of the chainsaw, since the outdated membranes have not been replaced.
Characteristics of Stihl chainsaws
|Model||Working volume (cm 3)||Power (kW / hp)||Weight, kg)||Specific gravity (kW / kg)||Standard tire (cm)||Standard chain||Start aids||Chain tensioner||engine’s type|
|Petrol-powered saws for sawing firewood and for maintenance of the land|
|MS 170||30.1||1.3 / 1.7||3.9||3.0||35||50. 3/8 ″ P.1.3||In front||2-stroke|
|MS 180||31.8||1.5 / 2.0||3.9||2.6||35||50-3 / 8 ″ P-1.3||–||In front||2-stroke|
|MS 180 C-BE||31.8||1.5 / 2.0||4.2||2.8||35||50-3 / 8 ″ P-1.3||ErgoStart||Fast||2-stroke|
|MS 181||31.8||1.5 / 2.0||4,3||2.9||35||50-3 / 8 ″ P- 1.3||–||Lateral||2-MIX|
|MS 181 C-BE||31.8||1.5 / 2.0||4.6||3.1||35||50-3 / 8 ″ P- 1.3||ErgoStart||Fast||2-MIX|
|MS 192 C-E||30.1||1.3 / 1.8||3.3||2.5||35||50-3 / 8 ″ P-1.3||ErgoStart||Lateral||2-stroke|
|MS 211||35.2||1.7 / 2.3||4.3||2.5||35||50-3 / 8 ″ P-1.3||–||Lateral||2-MIX|
|MS 211 C-BE||35.2||1.7 / 2.3||4.6||2.7||35||50-3 / 8 ″ P-1.3||ErgoStart||Fast||2-MIX|
|MS 230||40.2||2.0 / 2.7||4.6||2,3||35||50-3 / 8 ″ P-1.3||–||In front||2-stroke|
|MS 231||40.6||2.0 / 2.7||4.9||2.4||35||50-3 / 8 ″ P-1.3||–||Lateral||2-MIX|
|MS 250||45.4||2.3 / 3.1||4.6||2.0||35||50-3 / 8 ″ P-1.3||–||Lateral||2-stroke|
|MS 250 C-BE||45.4||2.3 / 3.1||4.9||2.2||40||55-3 / 8 ″ P- 1.3||ErgoStart||Fast||2-stroke|
|MS 251||45.6||2.2 / 3.0||4.9||2.2||35||50-3 / 8 ″ P- 1.3||–||Lateral||2-MIX|
|MS 271||50.2||2.6 / 3.5||5.6||2.2||37||62-0.325 ″. 1.6||–||Lateral||2-MIX|
|MS 291||55.5||2.8 / 3.8||5.6||2.0||40||67-0.325 ″. 1.6||–||Lateral||2-MIX|
|MS 390||64.1||3.4 / 4.6||5.9||1.7||45||66-3 / 8 ″. 1.6||–||Lateral||2-stroke|
|Petrol saws for forestry|
|MS 201||35.2||1.8 / 2.4||4.0||2.2||35||50-3 / 8 ″ P- 1.3||–||Lateral||2-MIX|
|MS 241 C-M||42.6||2.2 / 3.0||4.7||2.1||40||55-3 / 8 ″ P-1.3||Decompressor||Lateral||2-MIX M-Tronik|
|MS 260||50.2||2.6 / 3.5||4.8||1.8||37||62-0.325 ″. 1.6||Decompressor||Lateral||2-stroke|
|MS 261||50.2||2.8 / 3.8||5.2||1.9||37||62-0.325 ″. 1.6||Decompressor||Lateral||2-MIX|
|MS 261-VW||50.2||2.8 / 3.8||5.4||1.9||37||62-0.325 ″. 1.6||Decompressor||Lateral||2-MIX|
|MS 361||59.0||3.4 / 4.6||5.6||1.6||40||60-3 / 8 ″.1.6||Decompressor||Lateral||2-stroke|
|MS 362||59.0||3.4 / 4.6||5.9||1.7||40||60-3 / 8 ″.1.6||Decompressor||Lateral||2-MIX|
|MS 362-VW||59.0||3.4 / 4.6||6.0||1.8||40||60-3 / 8 ″.1.6||Decompressor||Lateral||2-MIX|
|MS 440||70,7||4.0 / 5.4||6.3||1.6||fifty||72-3 / 8 ″. 1.6||Decompressor||Lateral||2-stroke|
|MS 440-W||70,7||4.0 / 5.4||6.5||1.6||fifty||72. 3/8 ″. 1.6||Decompressor||Lateral||2-stroke|
|MS 441||70.7||4.2 / 5.7||6.6||1.6||45||66-3 / 8 ″.1.6||Decompressor||Lateral||2-MIX|
|MS 441 C-M||70,7||4.2 / 5.7||6.6||1.6||45||66-3 / 8 ″.1.6||Decompressor||Lateral||2-MIX M-Tronik|
|MS 660||91.6||5.2 / 7.1||7.3||1.4||fifty||72-3 / 8 ″.1.6||Decompressor||Lateral||2-stroke|
|MS 880||121.6||6.4 / 8.7||9.8||1.5||90||108-0.404 ″.1.6||Decompressor||Lateral||2-stroke|
|MS 150 TC-E||23.6||1.0 / 1.3||2.6||2.6||thirty||64. 1/4 ″ P. 1.1||ErgoStart||Lateral||2-MIX|
|MS 192 T||30.1||1.3 / 1.8||3.1||2.4||thirty||44-3 / 8 ″ P-1.1||–||Lateral||2-stroke|
|MS 201 T||35.2||1.8 / 2.4||3.7||2.1||35||50-3 / 8 ″ P-1.3||–||Lateral||2-MIX|
|MS 192 C-E Carving||30.1||1.3 / 1.8||3.3||2.5||thirty||64- 1/4 ″ P- 1.3||ErgoStart||Lateral||2-stroke|
|MSE 160 C-BQ||1.6||4.1||35||50-3 / 8 ″ P-1.3||Fast|
|MSE 180 C-BQ||1.8||4.2||40||55-3 / 8 ″ P-1.3||Fast|
|MSE 220 C-Q||2.2||6.2||45||66. 3/8 ″. 1.6||Lateral|
Checking and subsequent replacement of defective membranes
Stihl 180 chainsaw carburetor membrane repair kit
Common malfunctions of the Stihl 180 carburetor
Malfunctions that can be solved by repairing the carburetor: It is worth noting that diagnostics may not always correctly indicate the problem. There are times when, due to different reasons, the same “symptom” occurs. And sometimes diagnostics can give false information, as a result of which you cannot correctly eliminate the cause of the breakdown. Pay due attention to diagnostics, but do not overestimate its importance.
The tool does not hold idle revolutions, and sometimes the revolutions “walk”. Most likely the idle jet is clogged. It is urgent to clean it, otherwise the saw will not be able to perform its functions. Another possible cause is a malfunction of the fuel system.
Sometimes this problem is solved by unclogging the valve that restricts the fuel tank. This valve regulates the output of gasoline and the passage of air. Do not forget to adjust the carburetor by changing the amount of air that is supplied to it. details about this operation can be found in the instructions included with the brand new chainsaw.
The carburetor of the Stihl chainsaw, without disassembling, can only be adjusted for the number of revolutions produced at idle. It is impossible to increase or decrease the fuel supply in various modes. Manufacturers have limited access to this adjustment by removing special screws. If faults are found in this system, it is possible, with experience, to increase the gap between the needle valve and the wall.
The saw does not start. The solution is the same as in the previous paragraph.
The tool began to consume more fuel, while its power was significantly reduced. Gasoline consumption and power are subjective concepts. To accurately determine these indicators, you cannot do without visiting special firms specializing in this tool.
Well, if these two indicators are visible “on the face”, then follow these steps:
Check if the chain is dull. A dull chain has a lower efficiency, and therefore the saw consumes more fuel.
Examine the fuel tank. Perhaps it has formed a small mechanical damage, through which gasoline leaves imperceptibly.
Examine the muffler carefully.
Clean the cooling system and exhaust system.
The unit stalls immediately after operation or warming up. Experts call it hot.
The most common reasons are:
- Lack of air entering the carburetor. Replace inlet and outlet valves.
- Breakdown of the cooling system (overheating). It is possible that foreign objects have entered the pipes with cold air, which will need to be removed.
- Chainsaw stalls when position is changed. This only applies to tilting to the side, in the vertical state the saw functions normally. This problem even applies to serviceable chainsaws, because during the development the designers made a small mistake. The Stihl 180 fuel system has a special design, in which the fuel cannot escape from the tank on its side. Sometimes the problem lies in the clogging of the gas pump.
The procedure for parsing, as well as tuning the carburetor of the Stihl 180 chainsaw: In order to carry out a high-quality repair of the carburetor, you will need to remove it. This is not difficult to do, but you need to be extremely careful. To begin with, we will prepare the workplace: install the lighting, lay out all the necessary tools. Understand that the carburetor is the main saw unit where the fuel and gasoline flows intersect. For stable operation, they must be cleaned of foreign debris.
Therefore, before the main work, you need to do the following:
- Remove and clean the muffler.
- Make sure there are no problems with fuel supply and combustion.
- Check the serviceability of the air and cooling filters.
Stihl 180 chainsaw carburetor tuning
Repair and adjustment of the carburetor of the Stihl 180 chainsaw
The Stihl 180 is a German chainsaw designed for gardening, logging, site clearing and other woodworking. Many people love it for its compactness and ease of use. The tool combines seemingly opposite qualities. power and maneuverability. German designers have tried to create this sample, but the MS 180 Stihl also has drawbacks that users face in various operating modes. Like all mechanisms, it tends to fail. What to do in such cases and is it worth contacting the workshops?