STIHL 180 does not start well when cold

Not starting: Causes and solutions

First of all it is worth noting the fact that the chainsaw 180 of this manufacturer is one of its best “creations”, but it has its disadvantages. Which we are going to talk about.

stihl, does, start, cold
  • A very common problem is that the STIHL 180 chain saw will not start and the spark plug will flood. The reason for this is that the oil, which is poured to lubricate the chain. begins to leak. Since time is merciless and simply made a breach of tightness in the place where actually connected the hose from the oil pump and oil tank.

Of course to solve this problem is possible, but, given the design of this chainsaw, to do it will not be so easy, because simply have to fully disassemble the device to, as they say, get to the right place. You can see it more clearly:

stihl ms180c that wont idle and runs rough watch this

In order to exclude the saloon from the objects of damage it is necessary first of all to disconnect the fuel hose from the carburetor and actually check whether the fuel flows out of it.

In this case the problem is in the muffler, which can be simply clogged with sediment that occurs during the operation of the device, and which is deposited in the exhaust.

Chain lubrication for chain saws

  • There may also be a leak in the connecting pipes or the connections themselves in the area of the oil pump fittings.
  • STIHL 180 chain saw fails to start because of a broken cylinder. But a visual inspection is sufficient to determine its condition. But if you find bumps and chipping there as well, then you can be sure that the cause of the damage you have found.
  • If you find the fault with the plug by checking. If it has a defective cylinder and is broken, you must unscrew it and then dry it directly. But it is worth noting that you should not pierce it in any case, as you will simply ruin the part and it will be unusable.

You also need to drain the excess fuel from it through a special hole.

In addition you should remember that the drying out should be done for at least thirty minutes and only after this kind of manipulation you can put it back and actually try to make a direct start of the instrument.

over, it may be that the expiration date of your plug has passed, in which case you need to replace it.It is therefore a good piece of advice to always have a new spark plug or, better still, a set of spark plugs. Then you can replace it at any time and find out if it is the cause of the breakdown. over, the cause of the failure may also be a weak contact that actually connects the high-voltage wire and the end of the plug. The ignition unit can also be broken. It is worth noting that in order to fix this kind of problem it is necessary to produce a replacement unit because it can not be repaired.

It is important to remember that even if you find the very cause of a broken tool, it does not mean that you will be able to fix it yourself. As there are this kind of failure, which can only fix a specialist. If you have carried out the immediate manipulation regarding checking and changing the oil quality (cf. STIHL chain saw oil ), but nevertheless the chain saw still refuses to start in which case you need to keep looking.

But if you have performed all the manipulations prescribed above to the full extent and have not missed a single nuance, but nevertheless the tool is still not corrected, in this case the problem lies in the group, which is called the cylinder. But if you are still unable to “bring your iron friend back to life”, simply take your chainsaw to a service center where it can be repaired.

Why the STIHL chain saw will not start

For preliminary diagnosis of the causes, check the work of the gasoline pump, the appearance of the spark plug, fuel flow, the functionality of the carburetor and the condition of the filter. Pay attention to the performance of the cylinders, pistons, muffler, crankshaft bearings. After precautionary measures try to start the chainsaw. Insufficient lubrication of friction parts is also a factor for poor performance.

Here are the most important malfunctions that can occur when STIHL chain saws are started (no spark, stalling or no recoil) and what to do about them.

No spark

Checking the spark on the spark plug. Various factors can affect the function of the element. Testing of the mechanism reveals the causes:

stihl, does, start, cold

Soiling builds up on the spark plug pins because of these conditions. Over time, corroded wires are the cause of missing spark in about half of all cases. This happens because the gap between the modular contacts changes. To check the spark, do the following:

  • the tip of the high-voltage cable is removed;
  • The spark plug is unscrewed;
  • tip is put back in place;
  • the spark plug is leaning against the cylinder with its wide end;
  • start the starter.

Бензопила “Stihl MS-180″ не запускается на “холодную”.

If a bright lightning-like spark appears between the electrodes when starting, the ignition assembly is in order. If there is no flash, the entire element is cleaned and the gap between the conductors is adjusted. Sometimes there is no gap between the flywheel and the ignition coil. When the flywheel rubs, scratches are visible on its exterior.

Faulty ignition coil

The module or coil is not disassembled, its suitability is difficult to determine without test equipment. Modern ignition systems are sturdy, lightweight and small in size. They are characterized by almost failsafe functionality. Problems with chainsaw malfunction due to the ignition coil can be corrected by yourself.

Test the outgoing leads for damage (e.g. ч. Internal) which are caused by vibration, resulting in friction. If no cracks are detected, the ignition coil needs to be replaced. Sometimes a faint, barely audible flash when the saw heats up indicates a module malfunction. This is due to an increase in temperature of the coil, which leads to an increase in resistance of the transistor.

The peculiarity is that at the beginning of operation the spark may appear, but after prolonged use it becomes dull and disappears. Modern ignition coils are not repaired in the home workshop, so replace them with suitable elements.

Fuel delivery

After unscrewing the spark plug, wet deposit is detected on the spark plug surface. This indicates that there is too much gasoline in the combustion chamber. This is the reason why the tool does not work or cuts out, i.e. к. fuel does not ignite.

Another hindering factor is a clogged breather valve, a small hole in the cover of the gas tank. Clean it with a needle, otherwise the STIHL MS 180 chain saw will not start. To determine if the fuel supply is incorrect, carry out the following steps in sequence:

  • Remove the spark plug;
  • fill in 2 cc of petrol with a syringe into the spark plug hole;
  • put the ignition device in place and put the cap of the high-voltage wire;
  • move the lever to the hot start position;
  • Pull starter grip a couple of times.
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If the instrument starts and immediately stops, the fuel line is further tested. Check the fuel filter, check the splash out of the crankcase, check the continuity of the partition in the pump when unscrewing the cap.

Crankshaft bearings breakage

If the bearings are defective, a slight play can be felt. To check for improper fuel supply, swing the STIHL MS 180 handwheel from side to side. Motion indicates that the flywheel is shifted toward the electrodes by its own magnets, resulting in no spark. To remove the mechanism, remove the cutting element, remove the filter and clutch cover. To stop the crankshaft, remove the manual starter cover and tighten the two bolts.

The clutch is unscrewed with a wrench in a clockwise direction. Drum and sprocket are removed, the old clutch is replaced and screwed all the way in. The crankshaft is blocked so as not to break the starter. Assembles mechanism in reverse order. The brake handle is tilted forward to tighten, the tool is started, then removed from the brake.

Bearing defects (holes in the cage are enlarged) are detected less frequently. To determine this, disassemble and measure with a micrometer. Broken bearings are evidenced by regular knocking. In this case, you need to urgently repair, t. к. If the integrity of the crankshaft is broken the piston group and cylinder will fail.

Fills the spark plug

In this case the spark is unable to ignite the fuel, which flows in large quantities into the furnace to burn the combustion mixture. If the spark plug fills, then a faulty carburetor or improperly starts a cold engine. Carry out a purge of the engine, the procedure is performed with the ignition off and away from the open flame. To ensure that the fuel is ignited at start-up, the mechanism is cleaned:

  • Unscrew the spark plug, wipe it dry and dry for half an hour;
  • Remove a big layer of carbon deposits with a file;
  • Adjust the gap between the contacts;
  • The tool is turned upside down and the gasoline is drained out;
  • In this position jerk the starter several times (to remove fuel residue);
  • reassemble in the reverse order.

The cause of a chain saw stopping in the midst of operation can be:

Remoteness from service stations and high cost of the provided repair services force the owners of failed tools to restore their performance by themselves.

This option is possible only after the warranty period ends. The difficulty is that the traces of the dismantling of individual units and assemblies noticed by service technicians may be the reason for refusing a free repair of more complicated and expensive parts.

Briefly about the main thing

This model is the pride of the German manufacturer and is a direct tool designed for a small level of work. It can be used for no more than twenty hours a month. This great device will easily help you cope with the care of your garden, to prepare wood for the winter time (see “The Woodburner”), to prepare the firewood for the winter time (see “The Woodburner”), to prepare the firewood for the winter time. It can be used for cutting down trees, to make cleared areas, as well as an indispensable helper in other areas, let’s say, simple manipulations.

We can say that these are mini chainsaw models, because they have a low weight of 3.9 kg, it has a small tank mass, both oil and fuel tank. The manufacturer has equipped this device with a two-stroke engine quite enough power for lightweight work.

over, it is quiet enough because during operation the noise level does not exceed 98 dB. So that you better understand the volume itself, just compare its noise with the spoken speech, which has a value of 76 dB.

Stihl MS170 Chainsaw Won’t Run Properly. Quickly Diagnose It With Apprentice Dave!

The power rating of this model is 2.6 W. It is worth noting that this is a fairly substantial level of power, given that it is not a professional chainsaw. Oil tank has a capacity of only 0.145 liters, and the fuel filter is 0.25 liters. The tire has a size of 350 mm and the pitch is 0.325.

STIHL 180 chain saw repair does not start. Not Starts STIHL 180 Chainsaw Causes

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9 Комментарии и мнения владельцев to this entry

I had the same problem, a brand-new saw after the 2nd refueling did not start, what did not find tips, unscrew muffled, look at the piston, but do not do it if you feel that there would be compression, starter cord because pulled with effort. But to our client it turned out to be simple as hell, he flooded the spark plug and because of his inexperience. Drain all the gasoline from the barrel. Unscrew the plug, check the spark, then you need to drain the remains of gasoline from the cylinder, for this purpose turn the cylinder down gently jerking the starter rope starting to drain the excesses of about 10 times. After that I put in the same position for 5 min for ventilation and drying, screw the spark plug. We fill the tank with gasoline and oil in the marked proportions. I put the lever in a cool start, pulling twice smoothly 3rd jerk, started from the third jerk. I was about to take it to the service.

Same problem, new saw, on the 2nd refueling, it stopped working. Checked, carburetor overflow, spark plug in gasoline, after drying spark appeared. After purging the cylinder, as described in the manual, tried to start the engine. In the “Cold Start” position, one burst, I put the choke in the starting position and it does not start. Unscrewed the spark plug and it was covered with gasoline again. Blow on the starter a hundred times, the same problem. And here comes your website, after reading Oleg’s advice (regarding blowing starter motor in the upside down position of the saw) tried, from the cylinder and carburetor poured about 10 grams of gasoline. Then connected the spark plug (without screwing) to the nozzle, put the choke to the start position, blew some more. I assembled it, refuelled it, it started. So, thanks to Oleg for his good advice !


The main Causes for not starting the engine.No sparkle on the spark plug (change the spark plug.

Oleg, thank you very much what’s left to do for our client is perfect.!In short This saw is 6 years old and I’ve used it 10 times this year. It used to start badly and at some point that was it I took your advice. Failure to dare, sorry money for the newest candle and air. Filter, but I think in the future may need.Thanks additionally. Dear Readers. Always start with a simple in most cases the problem is small. Good luck with your repairs!

Thanks to Oleg for the wise advise. This kind of advice should be written in the manual. New saw didn’t start on 3rd time, spark happens, alas spark plug gets thrown out. Did what remains to do our client because Oleg wrote, started with the first jerk.

If your STIHL chain saw MS 180 stalls at idle rpm, fails to pick up power when accelerated or stalls at full throttle, you should perform fuel system diagnostics and check the crankcase for leaks. You can make it on your own, but you need to have certain skills. If you are not familiar with the 2-stroke chain saw, it is better to consult a professional. к. this technique is rather capricious and any mistakes are expensive.

The chain saw Shtil does not start: the reasons and their solutions

First of all, it is worth noting the fact that the chainsaw 180 of this manufacturer is one of its best “creations”, but it has its own shortcomings. Which we will now talk about.

  • Quite a common problem is that the STIHL chain saw 180 does not start and fills the spark plug. The reason for this is that the oil that is used to lubricate the chain starts to leak. Since time is merciless and simply there is a breach of tightness in the place where the hose from the oil pump and the oil tank are actually connected.Naturally it is possible to solve this problem, but, given the design of this chainsaw, to do so would not be so easy, as simply have to fully disassemble the device, as they say, to get to the right place. You can see it more clearly in the video:
  • Many people wonder why the STIHL 180 chain saw will not start? If you believe the experts, then in such a situation, you need to first of all make the opening, and then close the lid, which is located on the gas tank. Or to take out and dry the spark plug. Or try to vent the combustion chamber. In most cases, this kind of manipulation is quite enough for the device to work. But there are cases when the STIHL chain saw does not start, but the spark is
  • In the above case, you need to make a direct check of the gasoline supply, the air filter and the direct operation of the spark plug. Since the basis of this kind of failure is a breather, namely its contamination. Because when it is clogged completely, there is a peculiar vacuum in the gas tank itself, which simply prevents the process of fuel supply.It is not difficult to solve this issue, as all you need to do is to clean it by using a needle.
  • There are also situations when the device basically starts, but immediately stalls.
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The main causes of this kind of malfunction are the carburetor and the filter, which simply could be clogged.

In order to produce an exception saloon from the damaged objects necessary in the first place to produce disconnect the fuel hose from the carburetor itself and actually check whether it leaks fuel.

  • Can leak as well connecting pipes or connections themselves in the area of oil pumping fittings.
  • STIHL 180 chain saw fails to start often because of a broken cylinder. But to determine its condition, a visual inspection is sufficient. But if even there you find the formation of bumps and chipping then you can be sure that the cause of the breakdown you have found.
  • If you find by checking that the problem is in the plug, you simply need to unscrew it, and then make a direct drying. But it is worth noting that you must not pierce it in any case, because you will simply ruin the part, and it will be unusable.You also need to make a drainage of excess fuel from it through a special hole.

You should also remember that the drying process should be carried out for at least thirty minutes and only after this kind of manipulation, you can put it back and actually try to make a direct start of the instrument.

It is also possible that your spark plug has simply expired, in which case it needs to be replaced.So an excellent advice is to always have in stock a new spark plug or better yet a set of spark plugs. Then you can at any time replace it and actually understand if it was the direct cause of the device failure. over, the cause of the failure may also be a weak contact that actually connects the high-voltage wire and the end of the spark plug. Also the ignition unit can be broken. It is worth noting that in order to fix this kind of problem you need to replace the unit itself as it can not be repaired.

But it is worth noting that it would be best if its repair will be done by experts, as if you have the necessary knowledge and skills, you can simply finish it and have to buy a new.

How to eliminate the reasons why the device does not start

It is important that even if you have found the cause of the malfunction it does not mean that you can fix it yourself. Since there are breakdowns of this kind that can only be corrected by a specialist. If you have done a direct manipulation to check and change the oil quality (see. STIHL chain saw oil), but nevertheless the chainsaw still refuses to start in which case you need to keep looking.

But if you have fully performed all the manipulations prescribed above and did not miss a single nuance, but still the tool is still not fixed, then the problem lies in the group, which is called the cylinder. But if you still could not “bring back to life” your iron friend, then simply take your chainsaw to the service center, where you will repair your device.Also, do not forget to take care of the engine, to know the ratio of gasoline and oil for chain saws read this article.

STIHL 180 no petrol in the cylinder what can it be?

The STIHL MS 180 chain saw is one of the world’s most dependable gardening tools. At least any technique sometimes happens a situation where it for some reason does not start. Here are the most important causes of the STIHL 180’s malfunction and how to avoid them.

No spark on the STIHL 180 chain saw

The STIHL STIHL ms 180 chain saw will not start if there is no spark between the electrodes on the spark plug. If you take the spark plug out and look around, there are no signs of this malfunction. Having found on inspection that the plug is wet, you need to start looking for the cause of the lack of spark on the spark plug.

spark plug malfunction

The first thing to do. check the serviceability of the spark plug.

It is easy enough to do. The plug is inserted into the cap of the high-voltage wire and pressed to the engine cylinder, then a couple of starter motor movements, if between the electrodes spark is not observed, then it is faulty or defective ignition module.

Checking spark plugs for spark formation is done with the ignition on.

To find out probably that the problem is in the spark plug, you should check beforehand the spark plug in the same way. If and so check the spark appeared, so the fault is found and just to fix the fault replace the spark plug with the newest.

Trouble with the ignition coil

The ignition coil, it is also called the module is undismantled, so it is very difficult to find its performance without a special tool. If the spark on a working spark plug never even appears, you suspect that the coil is to blame. But you should not immediately remove the old coil and run to the store, the tasks have little other nature.

No gap between the flywheel and the ignition module

Sometimes the absence of spark on the spark plug, is explained by the incorrect gap between the contacts of the ignition module or handwheel. You will like it than simple, and in addition it may be completely absent, then you will see scratches on the flywheel, which were formed after the contact with the contacts of the coil.

Check and re-set the clearance without the need for special tools. For this purpose it is useful to remove the starter, loosen the two screws holding the coil and putting a plate, cut out of a plastic bottle, between the contacts of the flywheel and the ignition module, tighten the screws holding the module.

If after such a clearance adjustment the spark is still OK, you have the option of continuing with the STIHL 180 chain saw. If not, you have to look again and check if the flywheel is touching the coil pins and again. Let’s assume and therefore check that after adjusting the backlash, it is gone again. Most likely the cause is in the crankshaft bearings.

Defective crankshaft bearings

If the crankshaft has a missing crankshaft bearing, it will have limited free play. To check for free rotation you can wiggle the chain saw STIHL 180 from side to side. If the free running meet, means under the action of its own magnets, the flywheel is attracted to the contacts of the ignition coil, t. к. Free play on the bearings allows him to do this and so the spark is lost.

Change of crankshaft bearings

Have the bearings on the crankshaft replaced by a STIHL servicing dealer, since it’s best to have the driveshaft bearing replaced. к. when replacing a STIHL 180 chainsaw it is necessary to fully disassemble it and remove the major components.

See also  How to start the STIHL 180 chain saw when cold

Without some experience or at least the ability to repair such chainsaws to change the crankshaft bearings perfectly, you can not.

What is needed, without a spark we figured out, but what to do if there is a spark, but the answer to the question of why does not start STIHL 180 chain saw, no. The reason is in the fuel system.

Why isn’t the gas coming out of the saw’s tank?

carburetor? There is only one reason. vacuum in the tank. Problem solving, pull out the white plug, clean.

Top problems with STIHL 180 carburetors

STIHL 180 chain saw carburetor malfunctions.

Other times, usually in the presence of spark on the spark plug, when examined, it should be noted that it has a wet patina, it shows the excessive supply of fuel in the combustion chamber and as a natural result of the impossibility of ignition of fuel consistency.

The spark plug is primed

In colloquial terms, the phenomenon when the spark is not able to ignite a solid volume of fuel. called priming spark plugs. The cause of the malfunction is in the carburetor, or in the wrong conduct of the start of a cool engine. If a malfunction is detected, the first thing to do is blow off the engine.

The method of “purging” of the engine

Do not operate the machine with the ignition on and near a naked flame.

  • Remove the spark plug;
  • Turn the STIHL 180 upside down and drain off the excess fuel;
  • In the turned over state to pull a couple of times starter chainsaw (in such a manner under the influence of compression from the cylinder will be removed from the excess fuel);
  • Install the spark plug and high voltage wire cap at the destination;
  • Set the lever of the engine control in the position of hot start;
  • Pull the starter a couple of times and start the engine.

If the STIHL chainsaw what remains to be done to our customer is fine and the method of starting to cool was just broken, then after “blowing” it should start. Otherwise the fault must be found in the carburetor.

No fuel coming in

This type of failure, as well as others, has its own appropriate sign. It consists in such a matter that the working spark plug, which requires a spark, will be completely dry. Check for suspected fuel starvation, of course using the following method.

Checking for a no-fuel system

  • Unscrew the spark plug;
  • Using a syringe, pour 1-2 cubes of fuel consistency into the spark plug hole;
  • Install the spark plug and put the cap on the high-voltage wire;
  • Set the engine control lever to the hot start position;
  • Pull the starter a couple of times.

If the STIHL 180 chain saw starts and immediately stops after a few pulls of the starter motor it is safe to assume there is no fuel supply, then the next step is to check the fuel line.

Diagnose the fuel line

You start the diagnostics of the fuel supply complex by checking the condition of the fuel filter. For this purpose it is necessary for you to unscrew a cover of a tank and with the help of a dural wire bent on the end, to pull out from a tank a fuel hose, with the filter in the base.

Having taken out and dismantled the filter, you can try to blow there, if the air does not go, it means that the discrepancy is found. If what is left to do our customer is fine, next you need to check the system for clogs.

To check the fuel hose, you need to disconnect it in the area where it connects to the carburetor, then blow there. The clogged hose of course clean mechanically, if this is not realistic, replace with a new one.

In this case, when the supply hose and fuel filter are normal, but there is no fuel supply, the reason is hidden in the malfunction of the air pulse to the fuel pump.

Checking the pulse from the engine crankcase

The fuel pump on the STIHL MS 180 is mounted specifically in the carburetor and runs on impulses from the engine housing of the STIHL chain saw 180. The pulse transmission, is carried out through the pulse channel in the rubber pipe connecting the cylinder to the carburetor.

Clogged channel, fraught with problems with the fuel supply or its complete absence. To check the nozzle, you need to remove the air filter housing and the carburetor, then a thin iron wire to check the channel for blockage.

The rubber parts on the STIHL 180 chain saw need to be checked from time to time for cracks. If it is damaged then the defective parts must be replaced with new ones.

The next cause, associated with no pulse in the branch pipe channel, is depressurization of the engine crankcase, resulting in air leakage from it and reducing or otherwise completely stopping its flow to the fuel pump. The result of depressurization is a partial or complete loss of fuel pump performance. To check the tightness of the crankshaft oil seals, and in general the crankcase chain saw STIHL 180, uses a special device vacuum gauge, and because it is a special purpose tool, there are mostly only service centers. The question arises as to what to do?

Check the pulse, of course using a syringe on the engine with the carburetor removed. It will be necessary to fill a syringe with a little oil to lubricate the motor and squeeze it into the impulse channel of the spigot, then pull the starter. If the pulse doesn’t go away, the oil stays in the channel and you have to find the cause deeper, disassemble the engine and inspect the oil seals. If the oil is squeezed out of the channel, it means that the problem is hidden in the fuel pump.

Fuel pump

The main element of the fuel pump, is a special diaphragm that moves in the pump housing. If it is broken, the fuel supply to the carburettor and the engine of the STIHL 180 chain saw is cut off. Check the integrity of the membrane of course visually with the removed cover of the fuel pump, in the presence of flaws (rips, cracks) it is an option to replace, using a repair kit for the carburetor.

If you do not start STIHL 180 chain saw, and after reading the material is difficult to understand what and how to do to find and remove the fault, do not immediately throw our customer remains and write in the search engine: does not start STIHL chain saw 180 prerequisites video. Just below is a video tutorial, where the service technician carefully explains why the STIHL STIHL 180 chain saw will not start, and why it will not start when it is hot.

Troubleshooting tips

In the first case, the problem is solved by bringing in the serviceable condition of the air intake device. It is recommended to blow out the paper filter that has expired its resource with the back flow of air. Methods of cleaning other types of filters are specified in accompanying operation manuals.

  • Adjustment of the carburetor is made on the engine warmed up to operating temperature. The power unit is tuned for optimum performance by turning the quantity and quality of mixture adjustment screws. The success of the work is determined by knowledge of the fuel system design, the interaction of all components.
  • In particular, the increased complexity of adjustment of carburetors with built-in compensators and other elements of automatic control. Such equipment is adjusted with the help of special equipment, which is equipped with service and repair centers.

If the engine cannot be adjusted, the cause of excessive fuel in the emulsion may be a leaky valve or the carburetor float itself may be frozen.

The final result of the work performed:

  • rapid revs;
  • stable operation in idle mode;
  • Traction parameters recovery;
  • No increased smoke and detonation noises.

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