Do-it-yourself STIHL 180 chain saw Disassembly video
A professional STIHL chain saw repair at our service center will help you save money and time, extend the service life of your equipment, and avoid cooperating with unscrupulous specialists. Years of experience in servicing and restoring garden equipment has given us the opportunity to understand the machine in detail. That lets us take care of the most complicated jobs and guarantees effective results in the shortest possible time.
In this case, you can count on a thorough diagnosis and accurate indication of the causes of faults. If necessary our Service team will give detailed advice on chain saw operation in the future and help to set it up correctly.
Service prices
| Scope of work | Price in rubles |
| Diagnostics (in case of repair the diagnostics is not paid) | 600 |
| Complex maintenance (consumables and labor) | 1800 |
| Overhauling engine | 1500 |
| Cylinder replacement | 1500 |
| Engine crankshaft replacement | 1500 |
| Replacing the piston | 1500 |
| Replacing the piston ring | 1500 |
| Flywheel replacement | 500 |
| Flywheel key replacement | 500 |
| Replacing engine packing | 1500 |
| Crankcase Replacement | 500. 900 |
| Crankcase gasket replacement | 500. 900 |
| spark plug replacement | 100 |
| Replacing the carburetor and adjustment | 500 |
| Fuel tank replacement | 500. 1000 |
| Replacing the fuel primer | 100 |
| Shock absorber replacement | 100. 500 |
| Replacing the drive sprocket | 500 |
| Brake Cover Replacement | 100 |
| Brake spring replacement | 100 |
| Oil Pump Replacement | 500 |
| Oil line/filter replacement | 500 |
| Intake tube replacement | 300 |
| Chain tensioner replacement | 200 |
| Clutch clutch replacement | 500 |
| Clutch spring replacement | 500 |
| Magneto replacement | 500 |
| Fuel hose replacement | 200 |
| Fuel line/filter replacement | 300 |
| Gas trigger/locker replacement | 500 |
| Air filter replacement | 100 |
| Replacing oil pump ram (prof.) | 500 |
| Muffler replacement | 200 |
| Hand starter replacement | 200 |
| Starter spring replacement | 500 |
| Starter starter rope replacement | 600 |
| Spring/spring replacement | 300 |
| Replacement of ignition switch | 200 |
| Manual Starter Repair | 500. 1000 |
| Carburetor Repair | 600. 2000 |
| Adjusting the carburetor | 500 |
| Gas cable adjustment | 100 |
| Fuel system cleaning | 600. 800 |
| Air filter flushing | 200 |
| Gas tank flushing | 500 |
The STIHL MS 180 is a reliable and undemanding tool, but it needs to be repaired just as badly as any other piece of equipment. Next, let’s look at how to disassemble the chain saw STIHL ms 180, which is necessary for the design of the overhaul of the engine.
Repair of any piece of equipment should begin with a preliminary step, and STIHL 180 saw is no exception. The first step is to remove the side cover, the chain and the guide bar from the STIHL 180 long before any disassembly is carried out. Next, using a compressor and a brush, you need to clean the chain saw from dirt, sawdust, oil and other smudges.
A specific area to be cleaned is the chain saw’s drive sprocket, which is the dirtiest area of the chain saw. к. this is the dirtiest area.
Where there is a lot of oil, you have the option to wash it off with unstained gasoline.
Disassembling the STIHL 180 begins with removing the handle, which is attached to the body of the chain saw with 3 rubber buffers. To remove, you must remove the plastic plugs from the inside cavity of the shock absorbers, then, in the presence of a strong screwdriver, first squeeze the upper shock absorber, later the one closest to the rear handle.
In the back of the handle is the throttle trigger, which is connected to the carburetor through a wire rod, if you set out to disconnect the rod from the throttle trigger, you need to unscrew two screws and disassemble the handle.
When the handle remains on one shock absorber, you need to unscrew the body of the chainsaw from the inside of the handle and breaking to the side, remove the housing from the last rubber.
Next, remove the upper cover of the housing and unscrew the 4 screws securing the starter, after that you need to remove the oil tank and fuel tank covers. The starter is quite easy to remove and there should be no fuss.
After removing the starter motor, the interior of the chain saw should be cleaned. к. there is usually a lot of compressed small sawdust on the housing under the starter.
Hand wheel chain saw STIHL 180 is screwed with a huge effort, to remove it will need a head with an iron screwdriver. The nut holding the handwheel can be unscrewed with a 13 mm screwdriver.
To block the crankshaft from turning, you must unscrew the plug and through the spark plug hole to install the piston stopper, if it does not exist, use the old starter cord from the starter, with a knot tied to this address and immersed in a cylinder through the spark plug hole.
Never use a screwdriver or other tools to hold the flywheel from turning by inserting it between the ribs and the housing, this method of locking it from turning, the flywheel blades can not withstand the load and break.
If the piston in the cylinder is locked, the flywheel nut can be unscrewed. The thread in the nut is straight, so it is necessary to twist it to the left side. After loosening the nut, remove it until the end, rather unscrew until its upper lip flattens with the tip of the shaft, after that the soft metal tapper installed on the nut and make a sharp blow on it. The handwheel will pop off the shaft when you get a jolt and you have the option of removing it without using any additional tools.
Until the clutch is disassembled, it is necessary to dismantle the drive sprocket. To do this you need to take the lock washer out of the grooves on the shaft and remove the sprocket and the needle bearing.
READ STIHL 180 Does not keep idle speed
The STIHL 180 chain saw has the following main malfunctions
Your STIHL 180 chain saw, for which you are responsible for identifying and repairing faults, must be operated in accordance with the manufacturer’s instruction manual. The starter switch, for example, should only be operated after the chain tension has been checked by the master, and after you have ensured that the oil and fuel tanks are filled. The chainsaw has to be properly secured in your hands before you can start work.
The preparatory phase
Repair of any machine must begin with preparatory work, and the STIHL 180 is no exception. Before beginning the STIHL 180 chain saw dismantling procedure, remove the side cover, the chain and the guide bar from the chain saw. Next, with a compressor and a brush, you need to clean the chain saw from dirt, sawdust, oil stains and other.
When cleaning the saw, special attention should be paid to the place where the chain saw’s drive sprocket is located, i.e. к. this is the most contaminated area.
In places where there is a large accumulation of oil, you can flush with clean gasoline.
How to set the ignition on the chain saw?
Quite often the owners of chainsaws are faced with a problem in which the engine of the tool does not start. One of the main causes of this failure is a malfunction of the ignition system, namely a failure of the factory settings of the unit.
First of all, the owner of the saw will need to unscrew the protective rubber cap and check the spark plug underneath it. It is quite possible that it is flooded with oil, which prevents the flow of current to the spark plug. In such cases, the problem lies not in the ignition system, but in the fuel system, namely. in the depressurization of the channels.
However, if the spark plug is completely dry, then you may need to install the ignition on the chainsaw. To do this, you need to unscrew the spark plug and remove the protective cap. After that it is necessary to measure the gap between the handwheel and the ignition coil. The manual to each of the chainsaw models specifies the optimal gap between these elements. In most cases, it is between 0.2 and 0.4 mm. Since the flywheel of the tool is round, it is not possible to use a car feeler gauge to adjust the gap. It is best to use a special gasket template for this purpose. However, it is not easy to find. Therefore, many experts advise using a cut-out strip from a plastic bottle as a template.
Adjustment of the ignition of the chainsaw is performed quite simply;
- To begin with, loosen the bolts that fix the elements of the ignition system;
- Put a plate from a plastic bottle between the reel and the flywheel;
- Tighten the bolts all the way.
To avoid having to readjust the ignition system as often as possible, you should handle the chainsaw as carefully as possible. Try to avoid hitting the tool on wood, especially on the side of the tool where the assembly components are located. Especially if your chainsaw is equipped with electronic ignition.
Disassembling the clutch and oil pump drive
Before you disassemble the clutch, you must 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.
Unscrew the clutch using a 19 mm long pry bar. It has a left hand thread, so unscrew it to the side of the guide bar and not to the rear of the STIHL 180.
After unscrewing and removing the clutch, you should immediately remove the deflector plate and the oil pump drive, it’s easy to do, t. к. they are put on the shaft without any fastening.
How to repair a STIHL chain saw with your own hands
- The main types and diagnosis of defects, tools for their elimination
- Fuel system malfunction
- Elimination of defects in the starting mechanism
- Malfunctions of chainsaw cylinder piston group
- Lubrication system faults and remedy
With all the variety of modern building materials, wood is very important. Therefore, lumberjacks, workers of landscaping services, gardeners are interested in tools for woodworking, including chainsaws.
STIHL chain saws are easy to operate, inexpensive, reliable and longlife.
Different people prefer different brands. Somebody is interested in Partner chainsaw, somebody. in STIHL device, somebody. in something else. But they all break periodically, with their breakdowns and similar to one another, and different. Let’s take a look at STIHL chain saw repair with your own hands.
This brand is well known among experts, as well as among individuals involved in the arrangement of their own living space. The great popularity of STIHL chain saw makes a lot of practical use of this tool and forces to find methods to effectively deal with its usual failures.
Basic types and fault diagnosis, troubleshooting tools
Before you begin disassembling a faulty mechanism, you should prepare the proper tools. Because the chainsaw is technically a relatively uncomplicated device, this list is small and includes:
In order to make a real high-quality restoration of STIHL chain saw on their own hands, you must accurately determine the causes of failure. Since the specified chainsaw refers to mechanisms, driven by an internal combustion engine, the main faults are related to this very unit.
The most common malfunctions of STIHL chain saws are the following:
- Lack of starting the motor;
- Unsteady operation of the internal combustion engine immediately after startup, as a result of which the unit shuts down spontaneously after a short run;
- a working engine doesn’t reach its full power output;
- oil is leaking.
STIHL chain saw carburetor
One of the not uncommon breakdowns of the saw unit is also a breakage of the working chain. But it does not apply to dilemmas with the engine system. piston ring replacement please advise how to replace the piston rings on the. A torn chain usually needs to be replaced with a new one.
Finding the malfunction that caused the chainsaw to malfunction is done in the following order. first check the gasoline level in the tank. If nothing is wrong with the level, it is time to have the starter checked. To see what’s wrong with your STIHL 180 chain saw and air filter. If the starting mechanism does not show any signs of failure, it is necessary to pay attention to the spark plug.
If, as a result of painstaking inspection and check the correctness of the gap found that the plug is quite serviceable, then the cause of the problems that force the repair of chainsaws, can be a carburetor. STIHL 180 chain saw repair. need to replace the spark plug. Piston rings and. STIHL chain saw replacement of old and piston rings. This often happens because this device is usually clogged.
But if the substitution of an old spark plug at the newest, quite cleared the carburetor, and chain saw still does not start or, having worked, quickly stalls, then it could all be blamed faulty cylinder piston group (CPG). In order to perfectly check the entire group, you will spend some time, in fact a hundred percent disassembling the designated system. In this case, the technical condition of the cylinder, piston and piston rings is checked.
Now let’s look at each malfunction in a little more detail.
STIHL STIHL 180 Series Gasoline Piston Group Description
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On the STIHL chain saw 180 the piston group has a diameter of 38 mm. The size of the CPG chain saw is determined by the diameter of the piston, the cylinder is a little more complicated. Standard MS 180 CNG complete with piston pin, 2 piston rings and 2 holders.
Replacing a STIHL 180 piston group.
The inside of the cylinder should be perfectly polished and have a high gloss surface. This is where you should buy a spare CPG for your STIHL ms chain saw. If there is damage to the inside of the cylinder, there is no need to install such a cylinder.
Step by step installation algorithm
Not all modern chainsaws have a setting wheel which makes the saw blade much easier to fit. Systems with a locating wheel are very rare among chainsaws for domestic use. Therefore, it is very important to know the technology and sequence of installation of the chain on the chainsaw.
The main points to pay attention to:
- Prepare a flat surface on which you will assemble the chain and bar. This will minimize the chance of damage to the chain saw or loss of small parts. Lay the tire and the chain next to it in parallel on the prepared surface.
- Remove the sprocket guard, on modern chainsaws just unscrew the wing nut, on older models you may need an appropriate size ring spanner.
- At the base of the guide bar, turn the idler sprocket all the way to the right. Only in this position should the chain be installed.
- Then the chain is placed link by link on the fixing groove of the guide bar. Install the chain from the top of the guide bar, gradually turning it so that the bar is always at the top and the chain at the bottom, this allows the chain to always be taut and to fit into the guide slot without any problems. When you perform this step, be sure to wear thick protective gloves, because your fingers will touch the cutting edge. When viewed from above, the cutter is always positioned forward toward the end of the guide bar.
- Put both bar and chain on the drive sprocket.
- Screw the chain sprocket cover into place. Make sure all the mounting pins are in line with the holes. Improper, misaligned or incomplete mounting could be the cause of noise, rattling.
- Make sure the guides “go” into the special mounting groove.
- After mounting, check that the chain is locked in place on the chainsaw and on the guide bar. Everything should be mounted securely with no backlash.
Important: Tighten chain sufficiently after installation. Setting the correct tension is very simple and takes no more than 3 minutes. First loosen the nuts on the cover plate. Use the freely rotating adjusting screw to catch the correct tension, so that the chain does not pull away from the edge of the guide bar more than 3 to 5 mm.
All that remains is to tighten the nuts and check the tension. If adjustments are needed. make tensioning adjustments again.
When the chain is in use, because of the friction forces, its metal heats up and expands greatly, and the length of the chain increases. That’s why it is important to check the tensioning at regular intervals and to correct it in time.
How to install the bar and chain on a chainsaw, see the following video, which provides a clear algorithm of actions:
How to change the chain on a chainsaw
At the moment there is a huge number of chainsaw chain models on sale. First you need to know which size is right for your chainsaw so you don’t make a mistake in buying it. The second step is to install it correctly on the chainsaw. This is a somewhat time-consuming process, but if you know how to put on and adjust the chain on the saw bar without the help of others, the conscientious owner should not have any troubles. We have tried to carefully outline the process of installing the saw blade on the chainsaw.
We set hopes that after reading this article you will have everything in your hands the first time. But to minimize the chainsaw and chain problems in the future, don’t forget the three major rules:
- If the chain is worn and sagging, replace it with the newest one;
- If there is vibration and a bad cut when sawing, watch the chain tension on the chainsaw;
- Never use defective or repaired by incomprehensible specialists saw blades, your health and the health of those around is more important than small savings on the purchase of new and reliable chain.
Where the arrow on the piston points
Due to the fact that the pistons have the correct cylindrical shape, after extraction, many inexperienced masters are confused about how to put them back in place correctly.
The pistons in the cylinders in modern internal combustion engines have a very strict position, so an arrow always points in the direction where the exhaust gases move. Gardening tools have instruction manuals if you have any questions anyway. Even if it is in English, it is not difficult to translate it.
What happens if the piston is installed incorrectly
If the wrong piston ring is fitted to your chainsaw engine, it may malfunction and won’t work properly and may cut out. In the end, at best, the piston or cylinder will be damaged. In the worst case, the engine itself will fail and require expensive repairs.
If your chainsaw has to be repaired or serviced, take it immediately to a qualified service center. It is better to pay a technician than to buy a new garden tool.
Changing the piston group on the STIHL MS180 chain saw
Here’s a video to show you how to change the piston on your STIHL MS180 chain saw.
A distinctive feature of the cylinder on the STIHL MS 100 eighty will be that it has two compression rings, although not in fact all of his main competitors have only one. As the manufacturer assures, the installation of a pair of rings, allows you to better stabilize the piston during operation, to enhance its cooling and increase compression in the engine, by the introduction of what improves the start.
How to change the piston on the chain saw STIHL 180
If you want to replace the old piston does not install the latest, you should know how to do it correctly do not observe a certain method of action. You should also have a small slotted screwdriver, a special STIHL combination wrench, a power screwdriver, a hammer, a soft hammer, a compressor and a STIHL piston lock.
Getting to work on the replacement of the piston or piston assembly, chain saw must be cleaned with the highest quality dirt. Next, the work is done by the following method:
- Remove the top cover from the chain saw and do not unscrew the spark plug.
- Remove the side cover.
- Use a power screwdriver to remove the stoppers from the chainsaw shock absorbers, and then disconnect its handle from the body.
- Next, remove the drive sprocket and starter motor.
- Place the piston stopper in the spark plug hole and unscrew the flywheel nut and the clutch.
- Remove the flywheel, clutch and oil pump worm drive mechanism that is located behind the clutch.
- Remove the two screws that hold the carburetor and air filter. Remove the filter, control lever and STIHL carburettor.
- Remove the ignition coil and the muffler.
After all these operations are done, it is necessary to clean the saw from dirt once again, then turn it over with the bottom up and unscrew the four screws fixing the engine to the chainsaw body. After removing the screws, the engine is separated from the housing and cleaned again.
With the engine removed, unscrew and remove the pallet, then remove the piston and crankshaft from the engine.