Disassembling Chainsaw Shtil 180 Do It Yourself Video

Preparatory stage

Repair of any equipment must begin with the preparatory work stage, and the Stil 180 saw is no exception. At the preparatory stage, before disassembling the Shtil 180 chainsaw, it is necessary to remove the side cover, chain and tire from the chainsaw. Next, using a compressor and a brush, you need to clean the chainsaw from dirt, sawdust, oil stains and other things.

When cleaning the saw, special attention should be paid to the place where the chainsaw drive sprocket is located, since this is the most contaminated area.

In places where there is a large accumulation of oil, you can wash it with clean gasoline.

Product manufacturer STIHL

The history of the STIHL brand dates back to 1926, when Andreas Stihl founded.
Initially, the company specialized in creating working boilers and the first “washing machines”, and later, with the money earned, the first model of a chainsaw was created. This unit, despite its enormous weight (48 kg), quickly conquered the market and began to be sold very successfully to countries near and far abroad. The 90s marked the beginning of a family business for the company. Almost all members of the Stihl family began to take part in the life of the company.

In 1995, the AG&Co Holding was created, the main base of which was in Waiblingen and Diesburg.

Manufacturing company STIHL

Since 2002, a complete stranger has become the head of the board of directors of STIHL AG. At that time, boss Hans Peter Stihl headed the company's supervisory board and took over the chairmanship of the commission of STIHL Holding AG&Co.

After another 2 years, the company’s modern development center opened, and already in 2006, a new assembly plant started in China.

Today, the company is successfully developing, introducing new ideas and even more practical approaches into its work. STIHL's inventions top the chainsaw ratings in terms of reliability.

Removing the handle

Direct disassembly of the Shtil 180 begins with removing the handle, which is attached to the chainsaw body using three rubber shock absorbers. To remove it, you need to remove the plastic plugs from the internal cavity of the shock absorbers, then using a powerful screwdriver, first press out the upper shock absorber, then the one closer to the rear handle.

At the rear of the handle there is a throttle trigger, which is connected to the carburetor through a wire rod; in order to disconnect the rod from the gas trigger, you need to unscrew two screws and disassemble the handle.

When the handle remains on one shock absorber, you need to unscrew the chainsaw body from the inside of the handle and, bending it to the side, remove the body from the last rubber band.

Removing the starter

At the next stage, the top housing cover is removed and the 4 starter mounting screws are unscrewed, after which it is necessary to remove the covers of the oil tank and fuel barrel. The starter is removed quite simply and there should be no problems.

After removing the starter, the opened internal cavity of the chainsaw must be cleaned, since there is usually a large amount of compressed small sawdust on the body under the starter.

Removing the flywheel

The flywheel of the Shtil 180 chainsaw is twisted with great force, so to remove it you will need a head with a metal knob. The nut holding the flywheel is unscrewed with a 13mm head.

How to repair a Shtil 180 carburetor with your own hands

To block the crankshaft from turning, you need to unscrew the spark plug and install a piston stopper through the spark plug hole; if there is none, you can use an old cord from the starter, with knots tied to it and immersed in the cylinder through the spark plug hole.

It is strictly forbidden to keep the flywheel from turning by installing a power screwdriver or other tools between its ribs and the body; with this method of blocking from turning, the flywheel blades are not able to withstand the load and break off.

Once the piston in the cylinder is locked, you can unscrew the flywheel nut. The thread in the nut is normal, so you need to turn it to the left. Having loosened the nut, you do not need to remove it completely; just unscrew it until its upper edge is level with the tip of the shaft, after which a soft metal drift is installed on the nut and a sharp blow is made on it. Thus, the flywheel jumps off the shaft from a sharp impact and can be easily removed without the help of additional tools.

Self-repair problems

The problem in many cases is complicated by the lack of comprehensive information on repair technology. According to foreign manufacturers, after the saw has exhausted its service life, it should be scrapped, so the maintainability of many budget-level models raises reasonable doubts.

Professional-grade chainsaws are more difficult to restore.

The problem is compounded by the high cost of spare parts.
It is possible that to restore the functionality of individual components and mechanisms, in particular, to configure fuel equipment, special equipment will be required.

Replacing expensive branded parts with affordable but short-lived Chinese analogues does not justify itself economically. Practice shows that these components produce a service life of 50-60% at best.

Removing the clutch and oil pump drive

Before disassembling the clutch, it is necessary to remove the drive sprocket. To do this, carefully remove the lock washer from the grooves on the shaft and remove the sprocket and needle bearing.

With a high head of 19, you need to unscrew the clutch. The thread on it is left-handed, so it unscrews towards the bar, and not towards the rear of the Shtil 180 saw.

Having unscrewed and removed the clutch, you need to immediately remove the reflecting plate and the oil pump drive; this is easy to do, since they are put on the shaft without any fastening.

Carburetor, muffler and ignition coil

To remove the carburetor, you need to have a socket 8 and an extension, with which it is convenient to unscrew the nuts securing the carburetor and air filter. Before dismantling the carburetor, it is necessary to disconnect the ignition wire and choke rod from the engine control lever and remove the lever, only after this the air filter and carburetor are removed.

The Shtil 180 muffler is secured with two nuts, which you need to unscrew to pull it towards you, it can be easily removed.

The coil is secured with two screws; to remove it you just need to unscrew them.

How to Start a Shtil Chainsaw 180 Video

Removing and disassembling the engine

The engine is held in place by 4 screws installed on the bottom of the Shtil 180 chainsaw. To remove it, you need to unscrew them, and then carefully remove the engine from the seat and the rubber carburetor pipe.

To disassemble the engine, 4 crankcase screws are unscrewed and it is removed, then you can remove the crankshaft assembly with oil seals, bearings and piston rings.

Removing bearings and seals usually does not require additional tools, but if the bearings were pressed onto the shaft with force, then a special puller will be needed for dismantling.

To remove the piston from the connecting rod, you will need to remove the retaining ring from the seat using a thin screwdriver, then press out the piston pin from the opposite side, after which the piston is removed to the side.

Assembling the Shtil 180 chainsaw

Putting the stihl ms 180 saw back together is quite simple, the main thing is to adhere to the following algorithm:

Install the piston on the connecting rod, the arrow on the piston should point in the direction of the Shtil 180 chainsaw, and to the left of the piston should be the side of the crankshaft, which is intended for installing the flywheel;
Carefully insert the piston back into the cylinder, the place for mounting the coil should be on the side where the flywheel is installed on the crankshaft;
Install the bearings, seals, retaining ring on the shaft and lower the entire assembly into the seat in the cylinder;
Next, degrease the crankcase installation site and the crankcase itself, then coat it with sealant and, once installed, tighten the 4 fastening screws;

To assemble the Stihl 180 saw after the engine has been assembled, you need to follow the reverse disassembly sequence. It is important to treat the process carefully and do not forget to install the rods on the carburetor and connect the ignition wire.

Below you can watch the disassembly of the Shtil 180 in the video, it was made for inexperienced users, it shows the whole process in detail.

Disassembling the Shtil 180 chainsaw and assembling it, if you have some experience, is quite simple; the main thing is to thoroughly clean the saw before work and take your time. To ensure that small parts do not get lost, you need to use containers in which you should place spare parts during the process.

A common type of chainsaw is the chainsaw. This device is widely used in construction work, firewood collection and other various operations with wood. But no matter how high-quality the tool is, malfunctions may occur in its operation. It is more profitable to repair the Shtil 180 chainsaw yourself, as this will save not only money, but will also help you understand its structure.

Grinder from a chainsaw: attachments, homemade products, alterations. Tips and tricks

When is a piston replacement necessary?

There are a lot of reasons why the piston needs to be changed, and one hundred percent of the piston, but our client can only divide them into natural ones and those that appeared after incorrect operation. Natural, this is wear and tear formed due to long-term use of the Shtil 180 chainsaw. Artificial ones are not easy, for example:

overheating of the motor and the occurrence of thermal seizures;

It is necessary to diagnose the CPG if the Shtil ms 180 suddenly loses power, otherwise it will not start, and the starter of the tool does not turn over. If the passage and the starter turns, alas, the saw does not start, although there is a spark and fuel flows into the cylinder properly, you need to measure the compression in the engine.

If you suspect problems with the CPG, it is better to contact a service center authorized by the manufacturer, since only there are variations without a full analysis to accurately diagnose the fault and, if necessary, carry out high-quality repairs.

9.5 – 11 Atm. is considered a common indicator when the Stihl chainsaw starts up properly and produces the highest power; if the compression is lower, there is a possibility that there are snags on the cylinder-piston group, or its wear is quite large. Under any circumstances, with reduced compression, for future diagnostics, you need to completely disassemble the saw.

You can find the presence of scuffs on the piston, as well as a broken piston ring, if you remove the muffler and conduct a visual inspection of the visible part of the piston; however, there is an option to check the rings for elasticity by pressing on them with a small screwdriver. There will be little movement on the working rings; a defective or pinched piston ring will not move.

Principle of operation

Before identifying a malfunction and repairing the Shtil 180 chainsaw, you should study the principle of its operation and what structural elements it consists of. A chainsaw must contain its main element - 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 maintaining its movement under the influence of the centrifugal clutch. In addition to the electric motor, the chainsaw includes:

starter;
flywheel, also known as a cooling unit;
ignition unit;
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 it is mixed with air coming from the cleaning unit. From the carburetor, a mixture of air and fuel enters the engine. The saw carburetor has one adjustment screw that controls the idle speed. All device settings are made at the factory and ensure optimal supply of the fuel-air mixture.

The mixture is ignited in the engine cylinder, and the engine is started using the starter. Under the action of the piston, the shaft that is part of the crank mechanism begins to move. There is a sprocket on the shaft onto which the chain links are placed.

The chainsaw uses a single-cylinder motor. A clutch is used as a protection mechanism, which allows the electric motor to switch to idle mode in the event of a chain jam. At the initial revolutions, special linings located in the radial direction are pressed by springs to the middle of the shaft, thereby preventing it from rotating. At high speeds, centrifugal force increases, which leads to compression of the springs. The linings are pressed away 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) is generated during rotation, which leads to the appearance of current in the electronics unit. The block sends a signal to the spark plug, causing a spark to appear at its terminals. This spark ignites the mixture coming from the carburetor. After a successful start has occurred, the chainsaw begins to repeat all work processes in the cycle.

The device chain is made up of teeth and connecting elements. To protect the user from kickback, the device is equipped with a brake system. Oil supply occurs automatically under the action of a pump.

Specifications

Chainsaw Shtil 180 has the following technical properties:

engine displacement 31.8 cm 3;
engine power 2.7 l. With;
the weight of the saw without gasoline, oil and saw bar is only 3.9 kg;
Picco Micro 3 (PM3) chain, 3/8" P pitch;
oil tank volume 145 ml. Fuel tank 250 ml;
The sound pressure parameter is 97 dB(A).

These characteristics are official, because are listed on the manufacturer’s website and are publicly available.

The demand for Stihl mc 180 chainsaws among hobbyists is due to ease of use and reliability. The base model weighs only 3.9 kg. Saber, blade length 35 cm allows you to saw logs or drop trees with a cross-section of up to 30 cm. Two-stroke engine power 2 liters. s., which allows you to perform all household work related to cross-cutting boards and even firewood from any type of tree. The fuel tank capacity is only 0.25 liters, but this allows you to work without stopping for 45-55 minutes.

For refueling, you should use a mixture consisting of the recommended or transmission oil with unleaded gasoline AI-92 and AI-95. The ratio is 25 ml of additive per liter of gasoline.

The Shtil 180 chainsaw chain is an endless closed belt of 50 links. Other parameters:

chain pitch - 3/8 inch;
groove width - 1.3 cm;
Material of manufacture: high-carbon steel, chrome-plated steel, pobedite brazing.

The working mechanism, the saw set, includes a bar, a sprocket and an automatic lubrication system.

The chain tension system is located on the side, which is convenient. A chain brake is provided.

Depending on the length of the tire and the modernization of the Shtil MS 180 chainsaw, there are several modifications. Saws with a saber length of 35 cm belong to models whose markings include 14, their length in inches is 14. The same configuration in terms of the engine and its parameters, but with a bar length of 40 cm, is called MS 180 16.

Disassembling a chainsaw

Before proceeding directly to disassembling the saw, you will first need to clean it. All operations must be performed carefully and slowly. To prevent fasteners and small parts from getting lost, you can use containers into which structural elements are placed during disassembly.

Disassembly begins with loosening the screws holding the clutch cover, after which the chain tension is released. Only after this the bolts are completely unscrewed. Then the clutch lining, tire and chain itself are removed. The next step is to remove the top cover of the housing. Using a brush and compressed air, the drive gear block is cleaned - usually this is the most contaminated area. The easiest way to clean oil leaks is with gasoline.

The stages of disassembling the device occur in the following order:

The vibration handle is removed. It is fixed to the saw body using three shock absorbers. To remove it, you will need to remove the plugs, and then, using a screwdriver, press out the shock absorbers, starting from the one located farthest in relation to the handle. Then unscrew the two screws and disassemble the handle. Now you can remove the throttle trigger by disconnecting the wire rod.
The starter is removed. After removing the top cover, access to the oil and fuel tank plugs will be free. By removing the plugs, the starter is removed. The starter installation site is thoroughly cleaned of sawdust.
The flywheel is released. In order to remove it from its seat, you will need to use a socket with size 13. Initially, the spark plug is unscrewed, and the piston is blocked through the resulting hole. Having loosened the nut, a drift is installed on it, on which a sharp blow is made. This action causes the flywheel to jump off the shaft, after which it can be easily removed by hand.
The clutch and oil pump drive are dismantled. First, the drive sprocket and needle bearing are removed. To do this, remove the lock washer. Use a size 19 socket to unscrew the bolts holding the clutch. It is worth noting that the thread on it is left-handed. After dismantling the clutch, the reflecting plate and the oil supply drive are removed.
At the penultimate stage, the carburetor with muffler and ignition coil are removed. In order to remove the carburetor, you will need a 8mm socket and an extension. Before removing the air filter and carburetor, you will need to disconnect the ignition wire and disconnect the choke. The muffler is held in place by two nuts that can be easily unscrewed.
The engine is removed. Turning the saw body over, remove the four screws holding the motor. Then, with a gentle movement, it is removed from the installation site.

The engine itself is easy to disassemble. First, four screws are unscrewed and the crater is removed. Next, the crankshaft is removed along with the oil seals and other elements. The piston is removed from the connecting rod after removing the retaining ring and pressing out the piston pin.

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Tools:
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Spare parts:
high-quality spare parts for lawn mowers;
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Accessories:
original candles;
guide bar for a chainsaw of the required length;
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lubricants for brush cutters and saw oil of the required consistency, depending on the units of use.

If you need to buy gas-powered tools online, each spare part is provided with a link to the consumer basket, which greatly simplifies the ordering process. Phone numbers of a manager are also available, who can answer questions, tell you what spare parts are in stock now, how quickly collection and delivery to the buyer is carried out, and will also help you select the necessary elements and order them in the right quantity. “Mow Scythe” is a modern online store where any buyer can buy spare parts for a chainsaw or lawn mower at an affordable price.

Starter repair

Disassembling the starter to replace the cord does not create problems for an experienced user, but in most cases the plastic case cannot be repaired. The Chinese chainsaw range is mostly copies of the most popular European models, so we disassemble the Chinese chainsaw according to the standard scheme.

Worn parts of the saw set cannot be restored.

At home, you can shorten a new chain to fit a shorter bar.
The service life of branded tire components is equal to the service life of three saw chains.
This indicator can be significantly reduced by incorrect choice of chain pitch or excessive wear of the drive sprocket crown.

Buy gas-powered tools in our online store with advice from specialists

By offering each client the necessary product online, or by consulting by phone, we perform an important task, allowing each person to purchase electric and gas-powered tools of specific technical characteristics. Choosing the right tool is a serious aspect, since the correctness of the decision affects many circumstances, including:

Volume of material processing per day;
Speed and performance;
Technical parameters of processed materials;
Payback of gasoline tools, which is influenced by the cost of products and the level of service life completed before the use of spare parts.

When buying tools in the city of Poltava, or ordering the necessary sets of spare parts for chainsaws in Zaporozhye or another city in Ukraine, you can always rely on the staff of the KosiKosa store. Experienced and trained specialists will help you select spare parts for a lawn mower or saw from the required manufacturer in original quality. Also, unlike other suppliers who offer similar products and deceive people with low-quality goods, our Kosi-Kosa online store supplies spare parts and tools to cities such as Odessa or Kiev, Vinnitsa and others, only at a high level of quality. In addition, a properly conducted consultation allows you to quickly put all products into operation, for example, if necessary, replace trimmer heads using a minimum number of tools.

5 reasons why clients choose us

Based on the above, the superiority of the Kharkov company “KosiKosa” over many others has significant arguments that allow customers to choose spare parts for gasoline tools and the necessary components here. Among these there are five main reasons:

Our spare parts are high-quality products manufactured in official factories.
All gas and electric tools have a warranty for the period of use.
A convenient online catalog that allows you to easily find products by name, determine their type from a photo, and order online.
The lowest prices possible, allowing you to choose blades for brush cutters or gas tanks for saws, as well as other products at an equally favorable price.
We deliver throughout Ukraine in a convenient way for everyone, regardless of whether you need to deliver ordered tools to Kyiv or send wholesale components for them to Dnepropetrovsk.

It is the quality and large selection of products, affordable prices and fast delivery throughout the country that have become our calling card, making us one of the best in the eyes of hundreds of satisfied customers.

Sources used:

https://benzopilok.ru/brend/stihl/ms-180-razborka-sborka.html
https://pochini.guru/svoimi-rukami/remont-benzopilyi-shtil-180
https://www.kosikosa.com/index.php

Peculiarities

The working mechanism of the saw is the chain. The production of saw chains is carried out using a special technology:

The cutting element is made of high-carbon steel, and chrome plating or a pobedite layer is applied to the cutter. The more complex the manufacturing technology, the higher the cost of the chain.
The hinge holes are ground to reduce friction and extend service life.
Only rivets that are hardened using a special technology are used.
Marks are applied to the teeth, by which you can determine wear and perform uniform sharpening.
After connecting the links into a chain, the product is stretched to ensure dimensional stability during operation.

A sophisticated automatic chain lubrication system increases service life. New saws must be selected according to the characteristics specified in the operating instructions for the Shtil 180 chainsaw.

You need to know that chains with pobedite surfacing are 3-5 times more expensive than regular chains, but it is impossible to sharpen them with your own hands when repairing a Shtil 180 chainsaw. Employees of the Ministry of Emergency Situations use this tool more often.

People often ask whether it is possible to make longitudinal cuts with a Shtil 180 saw. The power of the saw allows you to cut wood only across the grain.

For the most part, reviews of Shtil saws are good. There are complaints about the insufficient power of the tool. It is necessary to choose an assistant for the task. The lightweight and affordable Shtil 180 chainsaw is designed for occasional use. There are special products for felling and cutting wood. At home, this option is not justified. The tool is much heavier and cannot be used to saw through small boards.

The price of the Stihl MS 180 chainsaw differs significantly. The most inexpensive basic model of the usual configuration. The cost of the device depends on the country of manufacture. A German or American product is more expensive than a Chinese one for well-known reasons.

The modern stihl ms 180 chainsaw has several design features that must be mentioned.