Repair calm ms 180 with your own hands replacing the piston

In detail: repairing calm ms 180 with your own hands replacing a piston piston from a real master for the site my.housecope.com.

Chainsaw repair Calm 180: malfunctions and their elimination

Chainsaw Calm MS 180 is considered one of the most reliable among the models of its own sector. But the technique is technique, and from time to time there are malfunctions, for the elimination of which stihl ms 180 repair may be required.

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You will learn more about the repair of units by reading the article.

This is the very first question that arises before the owner of the Stihl 180 chainsaw, which for some reason finished working normally. The answer to which will definitely not work. It would be correct to say: it is possible, but is it necessary? It is naturally more expensive to repair a chainsaw in a service center than to experience fixing problems with your own hands, but using the services of professionals, you get guarantees and confidence that the chainsaw will be correctly tuned and adjusted. Replacing the pump is required only if the chainsaw is calm 180. In general, the choice is yours.

Another small aspect regarding the choice to repair without the help of others or not is that in order to diagnose a chainsaw and its upcoming disassembly and repair, you need to have some special tools and certain knowledge of the saw design. Otherwise, you won't even be able to unscrew and remove the flywheel without damaging it.

Carrying out self-repair of the saw, very often break off the duralumin fan blades located on the flywheel. This happens because during disassembly they do not use a special crankshaft stopper, but they try to fix it by installing a screwdriver between the saw body and the flywheel blades, which leads to sad consequences. The flywheel nut has a severe tightening torque and the blades are fragile and cannot withstand this kind of force.

Video (click to play).

To carry out a relatively high-quality repair of a chainsaw calm ms 180 without the help of others, you will need to have:

air compressor (for cleaning the chainsaw and blowing out the main components and assemblies);
a vacuum gauge, needed to check the density of the crankcase and carburetor, as well as to identify defective oil seals;
piston stopper to limit the crankshaft travel;
an electric tachometer, in order to correctly adjust the chainsaw carburetor;
T-key STIHL Torx 27 or equivalent;
crankshaft bearing puller.

Only in the presence of these tools, the repair of the chainsaw calm 180 do it yourselfcan be done pretty well.

Calm can be attributed to the common malfunctions on a chainsaw:

Breakage of the starter cord;
Drive sprocket wear;
Leaks in the chain oil supply system;
Wear of the oil pump worm gear;
Air leaks through oil seals into the motor crankcase;
No spark on the spark plug;
Lack of fuel supply in case of defects in the carburetor (we will not dwell on them, because the repair and adjustment of the chainsaw carburetor is a rather broad question and will be discussed in a separate article);
Breaking off the eye of the landing site under the engine control lever.

Now let's take a closer look at the malfunctions and start with the repair of the oil pump.

If there is no oil supply to lubricate the chain, you need to diagnose the entire system and find the reason why the oil is not supplied. There may be several main circumstances:

Clogged oil filter or oil system;
Lack of thread on the worm gear of the oil pump;
Blockage or malfunction of the pump itself;
Depressurization of the oil system (there will be oil leaks on the bottom of the chainsaw).

To check the thread on the worm drive of the oil pump, it will be necessary to remove the driven sprocket chainsaw and unwind the clutch. Replacing the oil drive, disassembling the chainsaw calm 180 part 3. For this, the spark plug is unscrewed and a piston stopper is installed in its place, thereby ensuring reliable fixation of the crankshaft of the tool against turning.

Next, the cover is removed from the side of the Stihl 180 chainsaw tire, and the retaining ring holding the driven sprocket is removed with a screwdriver, after which the sprocket itself is removed.

In this way, the Stihl 180 chainsaw sprocket is also replaced as needed.

The clutch is untwisted using a 19 head and a knob. Unscrew the clutch clockwise, since the thread is left-handed. A reflective plate is installed behind the clutch, this also needs to be removed. A subsequent detail is the worm drive of the oil pump. Having examined and found the absence of plastic thread, you can safely throw out the part and install the newest one instead of it, since its restoration is unrealistic. The assembly of the Stihl 180 chainsaw is carried out in reverse order.

How simple and fast replace the oil seal on the chainsaw and a tool for this is shown How to easily and quickly replace the

stihl, shtil, MS180, calm, chainsaw / start chainsaw calm 180 videos.If the gear is in its normal state, the saw is disassembled, for this, the corkscrew is removed from the shock absorbers, the rear handle is untwisted and the throttle control rod is disconnected, after which the handle block is removed from the shock absorbers using a strong slotted screwdriver.It is necessary to remove the handles to provide access to the bottom at the installation site oil pump.In the next step, the oil hose coming from the oil tank is removed from the seat on the body and the line is checked for blockage by supplying air through the oil hose to the oil tank body. If a blockage is found, it must be cleaned, if this is not possible, the faulty hose must be replaced.Further, the oil pump is removed from the body of the Stihl 180 chainsaw and washed in gasoline.As a rule, calm oil pumps rarely fail and require replacement. Basically, the reason for the lack of oil supply is in the blockage, therefore, after flushing and checking the pump gear for cranking, you can be sure that after reassembly chainsaw Calm 180 oil supply problems will disappear.After repair, we carry out the assembly of the Stihl 180 chainsaw in the reverse order. An important point is the sealing of the oil hose at the installation site, in the seat on the body. Replacing the crankshaft oil seal, repairing the chainsaw is a very common disease of the police. It is necessary to rinse the hose and the hole for its installation with gasoline, then blow it with compressed air until it is completely dry and coat it with a sealing oil-resistant sealant, and then reinstall it.Frequent chainsaw breakdown Calm, which happens through the fault of the operator, this is a malfunction in the engine control mechanism. More precisely, when the seat for the control lever breaks off due to its design features, to solve this problem, it will be necessary to replace the saw body, which is quite difficult to do on your own. Consider a do-it-yourself repair algorithm that goes through replacement chainsaw body:

The body is released from the handle block;

The starter is removed, for this, the covers are removed from the fuel and oil tanks and the starter mounting screws are unscrewed;

Further, through the spark plug hole, a piston stopper is installed into the cylinder, the flywheel is unwound and removed from the engine shaft;

The drive sprocket is removed and the clutch is unwound;

Two nuts are unscrewed by 8 mm, holding the air filter housing and the carburetor, the modules are removed from the seats;

In the next step, 4 screws are unscrewed that hold the motor on the body. Into the case chainsaw Calm 180 special bushings are mounted in the place where the engine mounting screws are installed, which can fall out and get lost on their own.

The last moment is the removal of the oil pump, rubber elbow of the carburetor and the fuel and oil tanks.

Read also: DIY mirror housing repair

With all the above signs reflected on the spark plug, it is necessary to remove the carburetor and check its technical condition. Chainsaw repair calm 180 air filter clogging. Checking the breather and cleaning it. Chainsaw stihl ms 180-16. Replacing the review of the chainsaw calm 180. Piston rings in size. If a blockage is found, the carburetor should be thoroughly cleaned, then the device should be adjusted according to the technological requirements and the gasoline used in the tank should be replaced. At the same time, you must always remember that the carburetor is a rather complex assembly, consisting of many small components, parts and channels. Therefore, its repairs must be carried out with extreme care and accuracy.

In addition to restoring the carburetor, it is necessary to check the performance of the spark plug itself at the stand and, if necessary, set the correct gap in it. If you don't like the candle and its work at all, it is recommended to replace it with a new candle.

Sometimes the engine of the tool does not start or works with obvious interruptions and without reaching the rated and maximum power due to a malfunction of the cylinder-piston group. In this case, do-it-yourself chainsaw repairs are performed in this sequence.

4 bolts are loosened on the cylinder head, after which the cylinder is removed from the block. The piston is carefully checked for chips, scratches, scoring. Thus, the replacement of the sprocket in the chainsaw body is carried out calmly 180 in place. Their presence is unacceptable and entails replacement of the piston. At the same time, there should not be the slightest mechanical damage on the cylinder itself. Buy the stihl ms 180 chiansaw in characteristics of the chiansaw calm 180, device. It can either be repaired by bore a mirror to fit the piston oversize, or replaced with a new one assembled with a piston.

Of great importance for ensuring optimal pressure in the combustion chamber is the absence of signs of wear on the piston housing and piston rings. The normal functioning of the chainsaw engine largely depends on this.

It is possible to find out the degree of wear of the parts only after removing the piston group from the engine. The rings themselves should be tight enough and at the same time sit freely on the piston. The presence or absence of wear on the piston and rings can be verified experimentally. To do this, the piston inserted into the cylinder should be shaken slightly in different directions. Excessive piston free travel is most likely indicative of wear.

To eliminate this defect, either the cylinder is bored and the repair parts are installed, or the entire CPG set is changed. Otherwise, the chainsaw will not develop the required power.

Chainsaw repair is also required if there are problems with the lubrication system. Most often they consist in the absence of oil supply to the chain, as evidenced by the apparent dryness of the latter, or in oil leakage.

Lubricating fluid is either poorly or not at all supplied to the chain, as a rule, due to clogging or complete clogging of the oil supply channels. Dismantling the chainsaw calm 180 part 2, video ,. To identify where the oil flow is blocked, it is necessary to carefully inspect the oil hose and its connection points. In addition, be sure to clean the oil filter.

If oil leaks, then this indicates a violation of the tightness of the oil channels or hose. As a rule, this is due to mechanical damage. Most often, the unusable hose is removed, and a new one is put in its place. But sometimes a less radical method is used, treating the damaged hose with an appropriate sealant.

Thus, the repair of the Shtil chainsaw, due to the relative simplicity of its design and the fundamental similarity of its power unit with many other internal combustion engines, can be carried out on its own. Moreover, this can be done in ordinary home conditions, without resorting to the help of repair specialists.

Despite the many varieties of modern building materials, wood remains the most demanded. In this regard, chainsaws are in great demand among fellers, owners of their own houses and summer residents.

Among the huge variability of the model range, the most popular among both amateurs and experienced foresters for many years has been the calm 180 chainsaw, which is distinguished by its simple maintenance, repair and operation. The Stihl company was founded more than 9 centuries ago and began production of gasoline chain saws back in 1926. Thanks to many innovations, simplicity and durability, the tools of this manufacturer are in demand on the world market of woodworking equipment.

Before starting work on the diagnosis of malfunctions and their elimination, it is necessary to prepare the necessary tools.

General view of the Stihl MS 180 chainsaw with the main units

Due to the fact that the chainsaw is a relatively simple unit, the list of accessories includes the following items:

a set of flat and Phillips screwdrivers;
open-end locksmith keys;
candle key;
set of sockets with a knob
Multifunctional tool Stihl.

Multifunctional tool calm

In order to qualitatively eliminate the emerging breakdowns and restore operational indicators, it is necessary to establish as accurately as possible the malfunction preceding the failure of the unit. Following from the fact that the chainsaw is equipped with an internal combustion engine (ICE), the main causes of breakdowns should first of all be looked for in the power unit.

Before starting work, it is necessary to turn off the engine, let it cool down and exclude the possible start of the chainsaw. It is recommended to wear cotton gloves to protect your fingers.

The most common faults when repairing a chainsaw calm 180 include:

the engine does not start;
the operation of the motor is intermittent, with a short operation of the chainsaw, it spontaneously stalls;
oil leaks near the chain lubrication mechanism;
the engine does not develop full power.

Frequent breakdowns of the transmission part of the saw include rupture of the chain links. You can independently restore its integrity by riveting the links or replacing it with a new one.

Despite the relative simplicity of the design and the absence of complex mechanisms, experts recommend searching for faults in a specific order. First of all, the presence of a mixture in the fuel tank is checked, and if everything is in order with the liquid level, it is necessary to proceed to inspecting the chainsaw start unit. If this mechanism is also in good condition, it is necessary to check the performance of the spark plug.

After the performed manipulations to diagnose the spark plug (determining the presence or absence of carbon deposits, the correct gap between the electrodes, the state of the sealing ring), we turn our attention to the carburetor. Small sawdust, dust and soil particles often clog the fuel system.

If cleaning the carburetor of the stihl 180 chainsaw did not help to restore the previous performance of the unit, the reason probably lies in the cylinder-piston group (CPG). The power unit belongs to the most complex mechanism of the tool, the diagnosis of which requires almost complete disassembly.

The first step in diagnosing the fuel supply system is to check the level of the fuel mixture in the tank.

The main nodes of the fuel system of the chainsaw 180 calm

Even if the owner is confident in the presence of gasoline, this allows you to eliminate the vacuum created as a result of a clogged bypass valve. It is designed to optimize the pressure in the tank with fuel consumption. For the convenience of cleaning the breather, chainsaws use a regular medium-sized sewing needle.

When inspecting the fuel system, you should pay attention to the integrity of the pipes, the tightness of which can be violated by mechanical damage or prolonged operation of the unit.Sometimes the cause of the mixture flowing out and, as a consequence, the incorrect operation of the engine, is the wear of the rubber gaskets and the primer (suction button). In this case, to repair a calm 180 chainsaw with your own hands, you need to purchase a repair kit of seals and replace them.

The cause of problems with a chainsaw of this model may be the inoperability of the ignition system and the engine start unit. Image - Repair calm ms 180 with your own hands replacing the piston

General view of the ignition of a chainsaw 180

If, when measuring the gap between the flywheel and the module, no deviations are found, you must pay attention to the spark plug.

Most manufacturers, including calm chainsaws, recommend setting a clearance of 0.2 mm. This requires a coin, coin wire, or flat dipstick, which can be purchased at any automotive store.

Chainsaw starter Calm 180 assy

Having dismantled the candle from the mine, we measure the gap of the chainsaw candle between the central and side electrodes. If its value is excessive (more than 0.7-1.5 mm), a spark may occur periodically, and if it is minimal (less than 0.7 mm), it may be insufficient for optimal ignition of the fuel mixture.

If gasoline enters the combustion chamber, and no inconsistency in the ignition system has been identified, the carburetor may be the likely cause of failure. This unit is designed to mix fuel with air and supply them to the cylinder. After dismantling the carburetor, we clean its channels and jets using universal tools.

It must be remembered that the carburetor consists of many small parts, and therefore its dismantling, disassembly and cleaning require special care.

After diagnosing the ignition system of the chainsaw calm 180 and its restoration, we proceed to troubleshooting the power unit, namely in the cylinder-piston group of the saw.

During operation, 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 inner work surface for chips, nicks and cracks.

Even the slightest damage to the "mirror" of the cylinder 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, the 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 the subsequent machining.

In the process of sawing wood, the cutting part of the tool is subjected to high loads. In order to reduce frictional forces and the subsequent wear of the chain, the chainsaw calm is equipped with a lubrication system that gradually supplies oil to the tire. The rapid loss of cutting properties by the teeth and the absence of traces of lubricating fluid may indicate its leakage or clogging of the pipes. Image - Repair calm ms 180 with your own hands replacing the piston

Stihl 180 chain lubrication principle

First of all, when diagnosing the chain lubrication system for the ms 180 chainsaw, we pay attention to the oil supply hoses and their fixation points. Damaged connections cannot be repaired and must therefore be replaced. The oil passages can be cleaned with compressed air. For these purposes, we use a compressor or an ordinary car hand pump.

Due to its ease of operation and repair, the chainsaw of this model has gained wide recognition among professionals and amateurs in the field of woodworking.

Stihl MS 180 chainsaw repair

Question: Tell me about this problem.There is a Stihl MS-180 chainsaw in operation, produced in 2007. Last season, such a problem arose - the chainsaw stopped turning off with the lever, that is, you lift the black lever up all the way (where the inscription is STOP on the cover), but the saw does not turn off (does not stall). Since there was little left to cut, I just jammed the chainsaw, pulling the wire off the candle.

Not to say that it is very convenient, but somehow so. as I understand it, for the chainsaw to turn off, you need a contact between the tip of the wire and the bracket (which, as I understand it, regulates the damper on the carburetor - covers). or some other detail should be - fell off and fell out? if my idea is correct (about the wire contact
and staples), then specifically here this does not work - the plastic mask (into which the crimped end of the wire is inserted) does not allow this crimped tip to touch the staple. Attempts to pull out the staples a little - do not give a normal result, since the lower end of the bracket (the one that is inserted into the black plastic) has a certain stroke, and the upper end of the bracket (which is attached to the carburetor choke lever) has no free stroke. How to fix?

Answer: On this model of the chain saw, the closing spring is on the underside of the shift control shaft (black plastic), but should be on the top. It is necessary to pry the black plastic up from the socket with a key and install the flat contact spring from above. Then insert the plastic in place. What you have under the term "bracket" is a draft of the suction or air damper, and is not involved in the jamming process. A flat contact spring closes the contact and muffles the saw, in contact with the crimped end of the wire inserted into
plastic.

Question: The Stihl 180 chain saw starts up normally, stalls when you press the gas. Need to clean your filter?

Answer: Try to turn the tire over, and lubricate with WD-40, if it helps, then the reason is in the tire, if not, clean the carburetor. I think everything will be limited to the bus.

Question: Chainsaw Calm ms 180, cold starts with half a turn, muffle and not start, fills in a candle. What could it be?

Answer: This happens when the air filter is very dirty or the carburetor is rich. There are sometimes nuances in the carburetor. You can also check the muffler and cylinder outlet port for carbon deposits.

Question: I heard that the Shtil 180 chainsaw has a frequent replacement of the piston one due to the fact that the throttle valve screw was unscrewed and broke everything inside. Is it so?

Answer: This happens. I personally had such cases (brought in for repair). But not always the same damage - the cylinder did not change in all cases, but the piston must be replaced. And it breaks the tray, sometimes right through.