Stihl 180 Engine Assembly

Types of malfunctions and repairs of the Stihl 180 chainsaw

A common type of chain saw is a chainsaw. Such a device is widely used in construction work, wood harvesting and other various operations with wood. But no matter how high-quality a device is, malfunctions may occur in its operation. It is more profitable to repair the Stihl 180 chainsaw on your own, as it will save not only money, but also help to understand its structure.

Stihl 180 saw assembly and disassembly. Assembling the Stihl 180 chainsaw

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

Stihl 180 Engine Assembly
  1. Install the piston on the connecting rod, the arrow on the piston should point in the direction of the Stihl 180 chainsaw, and the side of the crankshaft, which is intended for installing the flywheel, is located to the left of the piston;
  2. 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;
  3. Install the bearings, oil seals, circlip on the shaft and lower the entire assembly into the seat in the cylinder;
  4. Next, degrease the crankcase installation site and the crankcase itself, then grease with sealant and, setting in place, tighten the 4 fastening screws;

To reassemble the Stihl 180 saw after the engine is assembled, the reverse sequence of disassembly must be followed. 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 see the disassembly of Stihl 180 on, it is made for inexperienced users, it shows the whole process in detail.

Dismantling the Stihl 180 chainsaw and assembling it, with some experience, is quite simple, the main thing is to thoroughly clean the saw before work and not rush. In order that small parts are not lost, you need to use containers in which, in the process, you should lay out the parts.

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Preparatory stage

Repair of any equipment should begin with the preparatory work, and the Stihl 180 saw is no exception. At the preparatory stage, before the Stihl 180 chainsaw is disassembled, it is necessary to remove the side cover, chain and tire from the chainsaw. Further, with the help of a compressor and a brush, you need to clean the chainsaw from dirt, sawdust, oil drips and other.

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

In places with a large accumulation of oil, can be washed with clean gasoline.

Removing and disassembling the engine

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

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 locking ring from the seat using a thin screwdriver, then the piston pin is squeezed out from the opposite side, after which the piston is retracted to the side.

Expert advice

When repairing a carburetor, you must remember that it is a complex assembly, consisting of rings and many parts. This means that cleaning and repairs must be carried out with utmost care. If the tool stalls or does not start, the spark plugs must be checked in addition to the carburetor. If they are defective, they are rolled and dried.

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Additional fuel can be drained through a special opening. Malfunctions of the Calm 180 chainsaw and their elimination are partially described in the instructions. After reading the article, you can understand that the candles must be dried for at least half an hour, after which the candle can be installed in place by running the device.

Replacing the starter cord

Remove the side cover. Inspect the inside of the protective casing. If there is no damage, check the launch unit. Unscrew the starter bolt and remove the spring. Diagnose a pulley with a cord. If the rope is intact, then each part of the launch mechanism is checked:

The starter cord is made of synthetic material and will gradually wear out. If it is damaged, cracked or torn, then it must be replaced.

Dismantling the clutch and oil pump drive

Remove the drive sprocket before disassembling the clutch. 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 19, it is necessary to unscrew the clutch. The thread on it is left-handed, so it unscrews towards the tire, and not the back of the Stihl 180 saw.

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

Major malfunctions

The chainsaw must be used according to the operating instructions, then it will last a long time and will not fail. All possible malfunctions of the Stihl chainsaw can be identified and eliminated by yourself. Consider the main problems that may arise in the components and design of the device, and how to repair the Stihl 180 chainsaw with your own hands.

How to set the ignition

It is necessary to set the ignition on the chainsaw. The ignition is adjusted as follows:

  • Turn out the candle and evaluate its appearance;
  • Specify the distance between the magnets and the coil (up to 0.2 mm);
  • Check the spark.
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Fuel supply system repair

The characteristic signs indicating a breakdown of the supply system are that the fuel stops flowing into the cylinder. With such a problem, the first step is to check the hose and the condition of the membrane. If everything is in order with these nodes, then the reasons are a clogged filter or breather.

If there is a suspicion of a clogged filter, the hose is pulled out and the stream of escaping fuel is visually inspected. If the jet is continuous and under pressure, then everything points to a filter malfunction. You can try to clean it, but it is more expedient to replace it. All the more, the manufacturer, with an average load on the device, recommends replacing it every four months. It is the poor jet of fuel that indicates a clogged breather. The breather is cleaned with a sharp needle.

In addition, a clogged air filter is also the culprit. The amount of air that mixes with the fuel is not enough, so the fuel mixture becomes too rich and the engine malfunctions. Elimination of the malfunction occurs by removing the filter and rinsing it in water.

In case of failures in the fuel supply, you should also pay attention to the carburetor channels and the integrity of the membrane.

Expert advice

When repairing a carburetor, you must remember that it is a complex assembly, consisting of rings and many parts. This means that cleaning and repairs must be carried out with utmost care. If the tool stalls or does not start, the spark plugs must be checked in addition to the carburetor. If they are defective, they are rolled and dried.

Additional fuel can be drained through a special opening. Malfunctions of the Calm 180 chainsaw and their elimination are partially described in the instructions. After reading the article, you can understand that the candles must be dried for at least half an hour, after which the candle can be installed in place by running the device.