Removing The Carburetor Stihl 180
STIHL MS 180 oil supply repair
The owners of this model of the tool should be prepared for the fact that they may face such an unpleasant moment as a leak of oil for lubricating the chain. Oil can leak out while working with the tool and even when just lying down without action.
What is the reason for this phenomenon? The fact is that oil leaks due to leakage in the area where the hose from the oil tank and pump is connected.
In order to solve the STIHL MS 180 oil supply problem, it is advisable to disassemble the device.
Solution to the problem:
- Check the hose, if it is damaged, then replace it with another one. Or try to degrease the hose and rinse, and put on a sealant, everything should work.
- Check the filter oil for breakage, clean it (if you filled in the waste)
- There may also be a clogged zapune, this creates a vacuum in the fuel tank and affects the fuel supply. The problem may be in the adjustment of the carburetor and the channels, or the air filter, may be clogged, you need to thoroughly clean the filter and carburetor channels.
In general, the main problem is due to poor oil.
It is not recommended to pour oil into a chainsaw that is not intended!
Chainsaw Stihl 180 oil supply repair
The STIHL MS 180 chainsaw is an indispensable tool for harvesting wood and other construction work from wood. It is one of the most acclaimed gardening devices that comes with multifunctional features.
The tool weighs about 4 kg. The power reaches 1.5 kW and the busbar length is 35 cm.
Note that from a semi-professional device for this model of the saw got electronic ignition and a fairly fast chain tension. In addition, the STIHL MS 180 saw has 2 tanks for gasoline and an oil mixture.
Reduced vibration is one of the main features.
This result is achieved thanks to 4 shock absorbers. It’s no secret that high depreciation has a detrimental effect on human health and in Europe they have been struggling with it for a long time.
It should be noted that it is not advisable to disassemble this saw on your own without special instructions, in this case it is better to entrust the device to the masters.
Carburetor STIHL MS-180
The STIHL MS-180 carburetor is equipped with one idle adjustment screw. Full load jet is not adjustable, i.E. It cannot be changed.
You need to know the basic rules for adjusting the idle speed:
1) check the air filter, if necessary, change it;
2) check the spark arresting grille, if necessary, change or clean it. Then you can turn on the engine and then warm it up.
Chainsaw engine breakdown
During operation, the parts of the cylinder-piston group of the saw fail due to friction forces, high temperatures and loads. If the tool does not reach full power at startup and stalls at idle speed, a possible problem could be damage to engine parts. To disassemble the power unit, it is necessary to unscrew 4 bolts and remove the cylinder. The owner is required to carefully inspect its internal work surface for chips, nicks and cracks.
Even the slightest damage to the cylinder mirror can negatively affect the compression of the chainsaw engine and its performance.
Cylinder-piston group of the Stihl MS180 chainsaw
When diagnosing an internal combustion engine, we also perform a visual inspection of the piston and compression rings. Made of aluminum alloy and cast iron, respectively, they are more exposed to abrasion loads than a steel cylinder. In case of breakage and excessive wear of the piston rings, they must be replaced.
If, upon visual inspection, ovality of the cylinder working surface is observed, it will need to be bored. To do this, we measure its diameter over a larger size, select the piston and perform subsequent machining.
Principle of operation
Before identifying a malfunction and repairing a Stihl 180 chainsaw, you should study the principle of its operation and what structural elements it consists of. As part of the chainsaw, its main element is a two-stroke engine. It is he who is responsible for the reliability and performance of the device. The engine is involved in starting the chain drive and keeping it moving by the centrifugal clutch. In addition to the electric motor, the chainsaw includes:
- Starter;
- Flywheel, it is also a cooling unit;
- Ignition block;
- Clutch and brake mechanism;
- Carburetor with STIHL compensator;
- Air filter;
- Fuel and oil tank;
- Muffler;
- Anti-vibration system.
Fuel from the tank enters the carburetor, where air from the cleaning unit is mixed with it. From the carburetor, the air / fuel mixture enters the engine. The saw carburetor has one miter screw that controls the idle speed. All device settings are made at the factory and ensure optimal flow of the fuel-air mixture.
The mixture is ignited in the engine cylinder, and the engine is started with the help of the starter. Under the action of the piston, the shaft, which is part of the crank mechanism, begins its movement. There is an asterisk on the shaft, on which the chain links are put on.
The chainsaw uses a single-cylinder engine. A clutch is used as a protection mechanism, which makes it possible to transfer the electric motor to idle in the event of a chain jam. At the initial revolutions, special pads located in the radial direction are pressed by springs against the middle of the shaft, thereby preventing it from rotating. At high rpm, the centrifugal force increases, which causes the springs to compress. The pads are squeezed out from the center of the shaft, the sprocket rotates and the chain starts.
The electrical circuit of the device is involved in the ignition system. Due to the use of a flywheel with magnets, an electromotive force (EMF) arises during rotation, which leads to the appearance of current in the electronics unit. The block sends a signal to the candle, provoking the appearance of a spark at its terminals. This spark ignites the carburetor mixture. After a successful start has occurred, the chainsaw begins to repeat all work processes in a cycle.
The chain of the device is assembled from teeth and connecting elements. To protect the user from kickback, the device is equipped with a brake system. Oil is supplied in automatic mode under the action of a pump.
Chain oil leaking
Sooner or later, every tool owner will face this problem. The cause of this malfunction is a leakage at the junction of the oil pump and the hose from the oil tank.
To eliminate this problem, you will have to almost completely disassemble the chainsaw.
- If the hose is damaged, it is best to replace it with a new one. You can try to fill it with sealant, after degreasing and rinsing.
- Oil can leak if the saw oil filter is clogged or broken. It should be checked and cleaned or replaced.
See also Dismantling the STIHL MS180 chainsaw
Good evening, I have such a problem. Stihl ms180c saw, worked a little, saw trees last time, there were interruptions in the engine. Then it stalled. What I didn’t do, 0, disassembled the blew, cleaned, the carburetor, assembled it, started up with a half-turn, worked fine, gained momentum, stalled, and again 0, replaced the candle. Ignition coil, 0, disassembled Carburet, clean, blew, assembled, started. And she worked again, the gasoline ran out, I just poured, poured gasoline, everything is 0 again, the candle is wet, there is a spark, tell me. How to solve this problem, I described meticulously to make it clearer, can anyone come across this problem.
Hello, and when you turned out the candle, did you try it? Is there a spark? It happens that there is a spark and everything seems to be in order, but the saw still does not start. I really had almost the same situation on another brand. It turned out there was no compression. I changed the oil seals and it seems to be still working (for the second year already). Another problem is filters. Have you changed them? In general, a bunch, each time different answers, so as not to bother for a long time, try the service, if it is too expensive, then
Principle of operation
Before identifying a malfunction and repairing a Stihl 180 chainsaw, you should study the principle of its operation and what structural elements it consists of. As part of the chainsaw, its main element is a two-stroke engine. It is he who is responsible for the reliability and performance of the device. The engine is involved in starting the chain drive and keeping it moving by the centrifugal clutch. In addition to the electric motor, the chainsaw includes:
- Starter;
- Flywheel, it is also a cooling unit;
- Ignition block;
- Clutch and brake mechanism;
- Carburetor with STIHL compensator;
- Air filter;
- Fuel and oil tank;
- Muffler;
- Anti-vibration system.
Fuel from the tank enters the carburetor, where air from the cleaning unit is mixed with it. From the carburetor, the air / fuel mixture enters the engine. The saw carburetor has one miter screw that controls the idle speed. All device settings are made at the factory and ensure optimal flow of the fuel-air mixture.
The mixture is ignited in the engine cylinder, and the engine is started with the help of the starter. Under the action of the piston, the shaft, which is part of the crank mechanism, begins its movement. There is an asterisk on the shaft, on which the chain links are put on.
The chainsaw uses a single-cylinder engine. A clutch is used as a protection mechanism, which makes it possible to transfer the electric motor to idle in the event of a chain jam. At the initial revolutions, special pads located in the radial direction are pressed by springs against the middle of the shaft, thereby preventing it from rotating. At high rpm, the centrifugal force increases, which causes the springs to compress. The pads are squeezed out from the center of the shaft, the sprocket rotates and the chain starts.
The electrical circuit of the device is involved in the ignition system. Due to the use of a flywheel with magnets, an electromotive force (EMF) arises during rotation, which leads to the appearance of current in the electronics unit. The block sends a signal to the candle, provoking the appearance of a spark at its terminals. This spark ignites the carburetor mixture. After a successful start has occurred, the chainsaw begins to repeat all work processes in a cycle.
The chain of the device is assembled from teeth and connecting elements. To protect the user from kickback, the device is equipped with a brake system. Oil is supplied in automatic mode under the action of a pump.
Do-it-yourself chainsaw repair “Stihl 180”: instruction
The Stihl 180 chainsaw has proven itself in the construction market. This portable device has a power of 1400 W and a motor volume of 31 cc. Cm. The length of the saw chain is 350 mm, at idle speed it makes more than 2 thousand revolutions. Its popularity among consumers is also explained by the acceptable cost of the tool. However, when using a chainsaw, malfunctions occur from time to time. In the service, repairing a tool is not cheap, so those who understand at least a little technical issues fix breakdowns with their own hands.
Stihl chainsaws characteristics
| 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 wood and for maintenance of the land | ||||||||||
| MS 170 | 30.1 | 1.3 / 1.7 | 3.9 | 3.0 | 35 | 50 3/8″R.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 | 50 | 72-3 / 8″- 1.6 | Decompressor | Lateral | 2-stroke | |
| MS 440-W | 70,7 | 4.0 / 5.4 | 6.5 | 1.6 | 50 | 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 | 50 | 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 | |
| Special saws | ||||||||||
| MS 150 TC-E | 23.6 | 1.0 / 1.3 | 2.6 | 2.6 | thirty | 64 1/4″R 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 | |
| saws | ||||||||||
| 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 | |||||
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 of it in acetone and let it soak. Acetone will remove debris that is blocking the passage of various fluids. This method will not hit your pocket, but it is not reliable. Such repairs will not ensure the long operation of the chainsaw, since outdated membranes have not been replaced.
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 cannot always correctly indicate the problem. There are times when, for 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 limits 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 clearance 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, one 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.
Inspect 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 and must 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 fuel system Stihl 180 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. Be aware 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.
The main stages of work (removal of the carburetor)
The best option would be to watch the tutorial. Fortunately, there are dozens of them on the Internet. There you will be told everything in detail and professionally. As they say: It is 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.
Stihl 180 chainsaw performance
| Model | MS180 |
| Engine displacement (ml) | 31.8 |
| Max power (HP) | 2.0 |
| Max speed (rpm) | 14000 |
| Weight (without tire, chain, oil and fuel) (kg) | 3.9 |
| Fuel tank volume (ml) | 250.0 |
| Oil tank volume (ml) | 145.0 |