How To Disassemble A Stihl Chainsaw
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.
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.
Removing the flywheel
The flywheel of the Stihl 180 chainsaw is twisted with great effort, so a head with a metal knob is required to remove it. The nut holding the flywheel is unscrewed by the head by 13.
To block the crankshaft from turning, you need to unscrew the spark plug and install the piston stopper through the spark plug hole, if it is not there, you can use the old starter cord, with knots imposed on it and immersed in the cylinder through the spark plug hole.
After the piston is locked in the cylinder, you can unscrew the flywheel nut. The thread in the nut is ordinary, so you need to turn it to the left. Having loosened the nut, it is not necessary to remove it to the end, it is enough to unscrew it until its upper edge is equal to 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 from a sharp impact jumps off the shaft and can be easily removed without the help of additional tools.
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.
Carburetor, muffler and ignition coil
To remove the carburetor, it is necessary to have a head 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 the choke rod from the engine control lever and remove the lever, only then the air filter and carburetor are removed.
The Stihl 180 muffler is attached with two nuts, by unscrewing which you need to pull it towards you, it can be easily removed.
The coil is mounted on two screws, to remove you just need to unscrew them.
How to disassemble and assemble a Stihl 180 chainsaw algorithm nuances
Assembling the 180 Calm Chainsaw
To assemble the stihl ms 180 saw back, it’s quite simple, the main thing is to adhere to the following algorithm:
- Place the piston on the connecting rod, with the arrow on the piston pointing towards the Calm 180 and on the left side of the piston. The side of the crankshaft for the flywheel;
- Carefully insert the piston back into the cylinder, the coil should be on the side where the flywheel is on the crankshaft;
- Install the bearings, oil seals, the retainer on the shaft and the bottom assembly in the cylinder seat;
- Then degrease the installation site of the crankcase and the crankcase itself, after which it should be lubricated with sealant and fixed in place with 4 mounting screws;
To assemble the Steele 180, the reverse sequence of disassembly must be followed after assembling the engine. It is important to carefully process the process and do not forget to install the rod on the carburetor and connect the ignition wire.
Below you can see the dismantling of the calm 180, it is made for inexperienced users, it shows the whole process in detail.
Dismantling the chainsaw is a calm 180 and its assembly, with some experience, is quite simple, the main thing is before work. Clean the saw carefully and take your time. So that small parts are not lost, you need to use containers in which you need to lay out spare parts.
Self-repair problems
The problem in many cases is complicated by the lack of complete information on the repair technology. According to foreign manufacturers, after the resource has expired, the saw should be scrapped, therefore, the maintainability of many budget-level models raises reasonable doubts.
difficult to restore professional-grade chainsaw.
- The problem is compounded by the high cost of spare parts.
- It is possible that in order to restore the operability of individual units and mechanisms, in particular, to adjust the fuel equipment, special equipment will be required.
Replacing expensive branded parts with affordable, but short-lived Chinese counterparts does not justify itself economically. Practice shows that these components develop a resource at best by 50-60%.
Removing the handle
Direct dismantling of the anti-vibration 180 begins with the removal of the handle, which is attached to the body of the chainsaw using three rubber shock absorbers. To remove, you need to remove the plastic plugs from the inner cavity of the shock absorbers, then use a powerful screwdriver to first squeeze out the upper shock absorber, and then the one closer to the rear handle.
At the back of the handle there is a gas trigger, which is connected with a wire rod to the carburetor, in order to disconnect the rod from the gas trigger, you need to unscrew the two screws and disassemble the handle.
When the handle remains on the same shock absorber, it is necessary to unscrew the chain saw from the inside of the handle and bend it sideways, remove the body from the last rubber band.
To remove the carburetor, you must have a head for 8 and an extension, with which it is convenient to unscrew the carburetor mounting nuts and air filter. Before dismantling the carburetor, it is necessary to disconnect the ignition wire and the choke rod from the engine control lever and remove the lever, only then remove the air filter and carburetor.
Muffler. The 180 pin is secured by two loose nuts, which must be pulled towards you, it can be easily removed.
The coil is attached to two screws, you just need to unscrew them to remove.
Fuel supply system
Dismantling the carburetor requires special attention. This assembly consists of many small parts, so the removed parts are stacked in the specified sequence on a blank sheet of paper. After flushing all components, the carburetor is assembled in reverse order.
Disassembly and assembly of Stihl МС 180
Stihl MS 180 is a reliable and unpretentious tool, but sometimes it requires repair, like any technique. In this article, we will consider how the Stihl MS 180 chainsaw is disassembled, which is necessary in the event of an engine overhaul.
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.
In places with a large accumulation of oil, can be washed with clean gasoline.
Removing the starter
At the next stage, the upper housing cover is removed and the 4 starter mounting screws are loosened, after which it is necessary to remove the oil tank and fuel barrel covers. 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, because usually there is a large amount of compressed small sawdust on the body under the starter.
Removing the flywheel
The flywheel of the Stihl 180 chainsaw is twisted with great effort, so a head with a metal knob is required to remove it. The nut holding the flywheel is unscrewed by the head by 13.
To block the crankshaft from turning, you need to unscrew the spark plug and install the piston stopper through the spark plug hole, if it is not there, you can use the old starter cord, with knots imposed on it and immersed in the cylinder through the spark plug hole.
After the piston is locked in the cylinder, you can unscrew the flywheel nut. The thread in the nut is ordinary, so you need to turn it to the left. Having loosened the nut, it is not necessary to remove it to the end, it is enough to unscrew it until its upper edge is equal to 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 from a sharp impact jumps off the shaft and can be easily removed without the help of additional tools.
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.
Carburetor, muffler and ignition coil
To remove the carburetor, it is necessary to have a head 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 the choke rod from the engine control lever and remove the lever, only then the air filter and carburetor are removed.
The Stihl 180 muffler is attached with two nuts, by unscrewing which you need to pull it towards you, it can be easily removed.
The coil is mounted on two screws, to remove you just need to unscrew them.