How to Fix an Oil Leak in a Chainsaw

Malfunction of the fuel supply system in the chainsaw

If everything is in order with the ignition system, then we go further and check the fuel supply system of the chainsaw.

• fuel filter contamination;
• the hole in the tank lid is clogged;
• insufficient amount of incoming fuel mixture.

Disconnect the fuel hose from the carburetor and see whether fuel flows out of it or not. Fix oil leak on chainsaw | video on. As a rule, failure in how to find a defect in a chainsaw in eliminating a leak can be done with. Repairing an oil pump on a chainsaw: how to fix an oil leak for repairs. If the fuel flows in a free stream, then everything is in order - the cap and filter are working properly. If the fuel mixture does not flow at all or flows very weakly, then clean the hole in the cover (breather) with a needle.

Automatic chain lubrication system

Anyone who has studied physics understands that when the chain moves along the tire, friction occurs, which, in turn, leads to an increase in temperature in the working area and premature wear of parts. To mitigate this process, it is necessary to constantly lubricate the working area. Actually, a chain lubrication system was developed for this purpose.

READ How much oil to put in the trimmer

Saw chain lubrication system

The operator pours oil into the tank, which flows through the oil pump to the saw set. The system is mounted in such a way that when the load increases, oil is released in large volumes; at idle speed, the system stops operating.

Faulty ignition system

When a Chinese chainsaw , inspect the spark plug. If it is completely dry, then this indicates that no fuel has entered the cylinder, which means that the cause of the malfunction of the tool must be sought in another unit. If the spark plug is filled with oil, then you need to adjust the carburetor.

In addition, you need to thoroughly clean the spark plug, turn off the fuel supply, ventilate the chamber after removing traces of fuel, and then start the starter system. When the spark plug is in place, the engine is checked.

If you notice black carbon deposits, change the oil to a high-quality one or adjust the ratio of consumables. In this case, the spark plug is also cleaned (in some cases a needle or awl will be needed), as well as stripped using electrode sandpaper.

When you install the spark plug in place, be sure to set the gap between the electrodes correctly. The optimal width is 0.5 millimeters.

Fuel system malfunction

There may be several reasons for this problem:

• Dirty fuel filter. The cause can be easily identified by inspecting the fuel system after removing the hose. A weak stream of fuel indicates the need to clean the fuel filter. If cleaning does not help, a new hose is installed in this unit.
• The breather installed on the tank cover is clogged. You can clean it with a needle of a suitable diameter.
• Fuel mixture too rich. Again, cleaning the fuel filter helps solve this problem.
• Incorrect carburetor setting. You can set it up yourself, based on the instructions provided in the instruction manual for your power unit.

Why does oil run from below on a chainsaw, how to fix an oil leak on a Goodluck chainsaw (Chinese)

Chainsaw won't idle

It often happens that after long-term transportation and constant use, a chainsaw refuses to idle smoothly. As a rule, this problem is eliminated by adjusting the carburetor.

You can learn how to properly debug the carburetor from this

If the carburetor is tuned like a clock, then you need to check:

• Fuel system. It makes more sense to start with the fuel pump.
• Muffler. There is a high probability that due to the abundance of accumulated soot, the engine cannot function normally.

Sources:

https://olivamebel.ru/info/pochemu-vytekaet-maslo-iz-benzopily/ https://armatool.ru/tec-masla-na-benzopile-ustranenie-neispravnosti-i-fotootcet/

Carburetor malfunction

If all the actions described above did not lead to success, perhaps the reason for the chainsaw’s inoperability lies in a malfunction of the carburetor.

Chainsaw Shtil 180 oil supply repair

The STIHL MS 180 chainsaw is an indispensable tool designed for harvesting wood and other wood construction work. It is one of the most recognized gardening devices that is armed with functional capabilities.

The weight of the tool is about 4 kg. The power reaches 1.5 kW, and the bus length is 35 cm.

Note that this saw model received electric ignition and a fairly fast chain tension from the semi-professional device. saw chain from a chainsaw. you will understand why it leaks: Why oil leaks from under. In addition, the STIHL MS 180 saw has 2 tanks, designed for gasoline and for oil consistency.

One of the main features is reduced vibration.

This result is achieved thanks to 4 shock absorbers. It is no secret that high depreciation has a harmful effect on human health and Europe has been fighting it for a long time.

It must be emphasized that it is not better to disassemble this saw without the help of others without special instructions; in this case, it is better to entrust the device to the craftsmen.

Checking the spark on the spark plug and the gap between the coil and the magneto

The spark plug is the most important part that is responsible for igniting the fuel mixture supplied to the cylinder chamber. If the spark plug has served its purpose, it will produce a weak spark or not produce one at all. You can check this in the following way:

1. Unscrew the spark plug
2. Place it on the cylinder, connecting it to the candlestick
3. Turn on the ignition
4. Pull the starter handle

If a spark occurs constantly, then this indicates the serviceability of the spark plug. Moreover, not only the spark plug is in working order, but also the ignition system - the coil and the high-voltage wire. If a spark appears on the spark plug, but intermittently (intermittently), then such a part must be replaced. First you need to check the gap between the contacts. The gap size should be from 0.5 to 1 mm.

For each chainsaw model, manufacturers indicate the recommended gap value, so you need to use a reference book. You can measure the gap with a special feeler gauge or a sheet of paper folded several times.

The absence of a spark on the spark plug indicates a malfunction of the ignition system, so before replacing the part, you should make sure that the ignition coil and high-voltage wire are in good condition.

The chainsaw may not start due to clogged spark plug electrodes. The presence of black carbon deposits on the spark plug or wet electrodes - all this may indicate the following malfunctions:

1. Black carbon deposits - the chainsaw carburetor is not adjusted correctly
   . The mixture entering the cylinder contains a lot of fuel and little air. The malfunction can be eliminated by cleaning the carbon deposits on the spark plug electrodes and then adjusting the carburetor
2. If the spark plug is wet (it floods), then this may indicate the following - either the ignition system is faulty (including the spark plug itself), or an excess amount of fuel enters the cylinder, thereby flooding the spark plug.
   First you need to make sure that the spark plug gives a good spark, and only then adjust the carburetor. It is not recommended to dry a wet candle using the calcination method, so it should be wiped dry and then allowed to dry in the sun
3. If the spark plug has red or pink carbon deposits on the electrodes, this indicates that the gasoline used contains a large amount of additives.
   Typically, this effect is achieved by gasoline grade AI-95 and higher, an increase in the octane number of which is achieved by adding additives

When the spark plug is brown (brick), this indicates not only that the chainsaw carburetor is correctly adjusted, but also that the ignition system is working properly. If you are using a new spark plug and when tested it produces a weak spark (or no spark at all), this is a sign of a faulty ignition coil. The coil must be replaced along with the high-voltage wire.

This is interesting!
It is necessary to check the size of the gap between the ignition coil and the magnet. Different manufacturers of chainsaws indicate the recommended gap value (usually the value is 0.25 mm); if this value is higher than the norm, then it should be adjusted using a feeler gauge.

What kind of oil to fill for the Stihl 180 chainsaw (stihl 180)

1. Don't spare money on original oil. Stihl HP 2-stroke oil costs a little more, but cleaning costs even more.
2. You need to pour high-quality fuel into the fuel, you can use Mobil 1, and three-phase is suitable for lubrication; under no circumstances should you pour waste oil into it.
3. Of the inexpensive options, mineral oil is 15-40, in winter 10-30. You can use M8, for example, or M10.

Remember personal safety when working with a chainsaw.

Remember that the performance of the chainsaw is affected by the quality of the oil being poured. Advantages of the Husqvarna 240 chainsaw. Why does gasoline leak from the Husqvarna 240 chainsaw? Poor quality oil can cause the tool to operate ineffectively and adversely affect its parts.

To ensure that the STIHL MS 180 oil pump delivers oil without difficulty, check and clean the pump periodically. OIL IS LEAKING Oil is leaking from the chainsaw. A brief overview of why there is oil in a chainsaw. Thus, the oil supply process will be normal.

Husqvarna saw disassembly algorithm

The process of disassembling a Husqvarna chainsaw is quite simple. In order to do everything correctly and not break parts of the housing or CPG, it is necessary to disassemble in the following order:

1. Top cover.
2. Chain and saw brake cover.
3. Starter.
4. Flywheel and clutch.
5. Front handle.
6. Carburetor.
7. Oil pump.
8. Engine.

Depending on the Husqvarna model, the disassembly procedure may vary slightly.

Important: before you start disassembling the chainsaw, you need to clean it. When working with a saw, a lot of chips and wood dust are generated, which during disassembly can get into the internal parts of the Husqvarna chainsaw

Removing the side cover and saw set

The side cover, or also called the saw chain brake cover, is held in place with two thirteen nuts.

After unscrewing the nuts, the cover is removed from the guide pins, after which you can remove the bar and chain from the chainsaw. Some models of Husqvarna saws have a special mechanism installed that allows you to dismantle the cover and saw set without the help of special tools.

Starter

The starter is located on the right side of the Husqvarna and is held in place by several screws. By unscrewing them, you can easily remove the starter and thereby gain access to the flywheel and ignition coil.

Removing the flywheel and clutch

In order to unscrew the flywheel nut, you need to unscrew the spark plug and install a piston stopper in its place.

Once the piston stopper is installed in the cylinder, the flywheel nut can be loosened. After the nut is unscrewed, it is necessary to use a hammer and a drift made of soft material to apply one sharp blow, installing the drift on the flywheel mounting shaft. This is necessary to remove the flywheel from the shaft, since the design provides for the installation and tightening of this element with great force.

You can learn more about how to properly remove the flywheel from a Husqvarna chainsaw, as well as how to completely disassemble the saw by watching the video. The wizard explains the entire process step by step and demonstrates all the necessary tools:

In order to unscrew the clutch you will need a special key. If there is no key, then it can be made from an old twenty-two head, grinding it in a certain way using emery.

Do not try to unscrew the clutch with a hammer and chisel, as some craftsmen advise. Using these tools, you risk breaking the clutch housing and increasing repair costs. It can also damage the crankshaft bearings.

Removing the Husqvarna front handle is quite simple, as it is attached to the shock absorbers with screws.

Air filter and carburetor

To remove the carburetor, it is necessary to disconnect the fuel hose and damper rods from it; this can be done conveniently after the air filter is removed, which is installed immediately behind the carburetor and held in place with two 10mm nuts. After the air filter is removed, the fuel hose and the rods are disconnected, just pull the carburetor towards you and remove it from the studs.

Oil pump

On Husqvarna, the oil pump is installed on the right side of the chainsaw. It can only be removed after the clutch has been released. Removal does not require a special tool, because... The fastening screws are made for a regular Phillips screwdriver. After the screws are unscrewed, it is necessary to lift the pump and disconnect the oil hoses from it.

Engine

To remove the engine on a Husqvarna chainsaw, after the carburetor, clutch, flywheel and muffler have been removed, you will need to unscrew the four screws securing it to the body.

After the engine is removed, you can unscrew the ignition coil from it, remembering to first disconnect the wires leading from it to the ignition switch. The coil can also be removed immediately after the starter is removed.

Assembling the Husqvarna chainsaw should be carried out in the reverse order, and the flywheel nut and clutch must be tightened with the force specified in the chainsaw operating instructions.

STIHL MS 180 carburetor repair

Repairing a STIHL MS 180 carburetor is a very difficult process. Note that during repairs there is practically no risk of sudden changes in the cylinder-piston group.

If the chainsaw does not start, then follow these steps:

1) open and close the gas tank cap;

2) it is advisable to remove the candle and then dry it;

3) ventilate the combustion chamber.

If after this there are no positive results, then it is better to check the condition of the air filter, the gasoline supply process and the functioning of the spark plug.

This problem is associated with a valve (slepun), which becomes clogged, and as a result a vacuum is formed. Everything about repairing a chainsaw with your own hands. My chainsaw is leaking oil for no reason. To eliminate this inconvenience, you need to clean the valve (slepun) with a needle.

Systematically check the filter; if the muffler is clogged, the device will not be able to deliver the power that is put into it.

If the chainsaw was purchased with a warranty (as a rule, there is no other option), immediately take it to the service center.

Thus, the STIHL MS 180 chainsaw is very easy to use, has good ergonomics and a number of significant advantages.

Saw manufactured in 2010. It is used mainly in the country and on annual trips to Karelia in August. I wouldn’t say that I completely trashed it; rather, it was used sparingly and sparingly. I didn’t build her a house from timber. So, fell the tree, saw off the pillar... And for a year now I have been suffering from this problem: there is always a puddle of oil under the saw. Leaking from the chain lube reservoir. I changed the pump 2 times, changed the rubber band into which the pump piston is inserted - one hell of a leak. In the summer, a full tank can leak overnight. After a long period of experience, I established that the leak was not from the pump, but from under the metal strip, which is under the “tire”. Behind it at the top there is a hole with a piece of PVC pipe inserted into it, which goes into the oil tank.

So, it constantly flows from there. I tried to leave the saw on its side, and twisted it this way and that... No matter what you do, there’s a puddle under the saw. Has anyone encountered something similar? Is it really possible to cure or will I continue to suffer forever? Nothing was flowing before...

Video

The main reasons why the chainsaw does not start in the video.
The video will be useful for those who quickly want to start a saw; the author gives practical advice. If a situation arises when the chainsaw does not start, it is important to correctly diagnose it and determine the direction in which to look for the fault. You should not use a tool that does not idle, as this indicates air leaks into the engine and can lead to serious problems.

If you don’t have enough experience in repairing chainsaws, it’s better to contact a specialist who will save your time and nerves.

When purchasing any instrument, everyone hopes that it will serve faithfully for many years. But it doesn't always work out that way. Perhaps after some time the product stops performing its functions or does not even turn on. Such a purchase can be returned or repaired free of charge, but subject to certain rules.

Basic malfunctions and ways to eliminate them

When starting to repair a chainsaw, you need to have an idea of ​​what malfunctions it may have, as well as how these malfunctions are eliminated. So, let's look at the signs of malfunctions and how to fix them.

Husqvarna chainsaw does not start

If the Husqvarna does not start, the first thing you need to make sure is that you follow the algorithm for starting the saw, as well as the presence of fuel in the tank. Detailed instructions on how to start a cold chainsaw and refuel it are available in the saw manual that comes with all Husqvarna chainsaws.

If you do everything correctly, but the saw does not respond, the reason may be a malfunction of the ignition system or lack of fuel supply.

To more accurately determine the reasons for this behavior of the chainsaw, it is necessary to inspect the spark plug, and then check it for the presence of a spark.

If the spark plug is wet and no spark is detected when checking, you should try replacing the spark plug itself. The replacement did not produce results, which means the problem may be hidden in the ignition coil, which is quite difficult to check on your own.

If there is a spark, but the spark plug is dry, there is a problem in the fuel system. To eliminate it, you need to carry out a full diagnosis. The fuel system consists of a carburetor and a fuel line. Without any specific experience, you can check the fuel line for ruptures, as well as the cleanliness of the fuel filter installed in the tank. It is better to entrust complete carburetor diagnostics and repairs to professionals.

If the saw starts, but poorly

The cause of difficulty starting the saw may be a malfunction or incorrect adjustment of the carburetor. If the carburetor overflows, the chainsaw will be easy to start when hot, but quite difficult when cold, especially after a long period of inactivity.

An indirect sign of an excessive amount of fuel mixture entering the cylinder when the chainsaw is operating is the exhaust. If a lot of white smoke is emitted when the chainsaw is running, it is worth checking the proportions of the fuel mixture and carburetor adjustments.

Chainsaw chain spins at idle speed

If the Husqvarna chain rotates at idle, then we can conclude that there is a malfunction in the clutch mechanism or the idle speed is not adjusted. To eliminate the malfunction, it is necessary to remove the saw chain brake cover and inspect the integrity of the clutch spring. Replace defective clutch.

If the clutch is working properly, to eliminate chain spinning, it is necessary to adjust the idle speed using the adjusting screw marked with the letter (T) or carry out a full carburetor adjustment.

Important: a possible reason for an independent increase in idle speed is the appearance of air leaks into the engine crankcase or carburetor, which can lead to serious damage to the CPG

Why does the Husqvarna chainsaw stall when you press the gas?

If the saw stalls immediately after pressing the gas, it is necessary to inspect the spark plug, which will help more accurately diagnose the problem. A wet spark plug indicates a malfunction or incorrect adjustment of the carburetor; in this case, the situation can be corrected by carrying out a complete diagnosis, repair and adjustment of this unit. If repairs and adjustments do not help, you need to replace the carburetor with a new one.

Another reason why a Husqvarna may stall when you press the gas is a malfunction in the fuel system, or more precisely, difficulty in supplying fuel to the carburetor. It is necessary to check the cleanliness of the fuel filter, as well as the integrity of the fuel hoses.

Why is the chain on the Husqvarna chainsaw not lubricated?

If your chainsaw has completely stopped supplying saw chain lubrication, then you need to check the entire oil system.

There may be several reasons:

1. Oil pump malfunction;
2. Clogged filter element installed in the tank;
3. Oil tank breather malfunction;
4. Oil hose rupture;
5. Mismatches in the oil hole on the bar and on the saw body (if the supply stopped after installing a new saw bar);
6. Clogged oil channel in the saw body;
7. Clogged oil supply channel in the tire;
8. Oil pump drive gear malfunction.

Chainsaw chain problems

In addition to problems with the engine, the chainsaw may experience operational problems due to a malfunction of the cutting (sawing) unit, consisting of an oil pump, bar and saw chain.

There is no oil getting to the tire

Usually, if oil does not flow to the chainsaw chain, you need to check the channels through which oil is supplied to the tire and clean them of dirt. If the previous steps did not reveal the cause of the problem, then you will have to check the oil pump. To do this you need:

• remove part of the chainsaw casing;
• remove the coupling;
• unscrew the 3 screws and remove the cover hiding the pump;
• get to the worm gear gear that rotates the pump shaft.

If the thread on it is worn out, the shaft does not rotate, the pump does not work, and the chain is not lubricated. A worn gear needs to be replaced. You can also remove the oil pump itself and manually try to pump oil through it. If it does not pump, the pump should be replaced.

Chainsaw oil filter

Also, a lack of lubricant may be due to its leakage. You should check how tightly the pipes coming from the oil pump are connected. If the tightness is broken, the tubes are replaced with new ones.

The chain breaks

If the chain breaks while the chainsaw is running, this could happen when it hits a hard object, such as a nail. If the chain constantly breaks, then the reasons may be the following.

1. Low quality of the metal from which the saw chain is made. It is necessary to buy gas cutter saws from reputable brands.
2. Chain overheating due to poor lubrication. As a result, the saw overheats, the properties of the metal change, and it breaks under load. It is necessary to check the entire chainsaw lubrication system (discussed above).

You can also learn about the reasons for frequent circuit breaks from this video.

The chain doesn't turn

This nuisance often plagues inexperienced chainsaw owners. They forget to remove the brake after starting the engine. As a result, the chain does not spin, the brake system overheats, and the clutch mechanism fails. The problem is solved by removing the saw from the brake. If the clutch is not burnt out, you will notice the chain turning. Otherwise, the clutch mechanism will need to be replaced.

The chain gets dull quickly

Basically, the reason that the chain becomes dull quickly is the poor quality of the saw. Trying to save money on buying branded chains, chainsaw owners buy saws from unknown manufacturers, or, due to inexperience, purchase counterfeits of well-known brands. It is best to buy a cutting element for a gas cutter in company stores. Stihl saw chains are very popular among owners of this equipment.

The chain doesn't stop

If, when working with a chainsaw, you notice that the saw chain does not stop at the right moment, then this breakdown may have 2 options.

1. The brake band is dirty. When operating the saw, dirt, sawdust, dust, etc. may get under the band. As a result, the brake mechanism becomes blocked and the chain does not stop when the gas is released. The problem is eliminated by cleaning this unit.
2. The brake band is worn out. This element of the brake system needs to be replaced.

The chain is jammed

This happens when the drive or driven sprocket wears out. The chain usually starts to jam under load. But without load the saw can rotate. The photo below shows a worn chainsaw drive sprocket.

The next photo shows that the reason why the chain jams must be looked for at the location of the driven sprocket.

But what to do if the chainsaw is completely jammed, and all attempts to pull the starter are unsuccessful? This malfunction sometimes occurs on Chinese-made chainsaws. It is caused by the bolts that screw the engine to the plastic casing of the unit becoming loose due to vibration. These bolts are located directly under the flywheel (magneto). In the photo below, arrows show the location of the problem bolts.

As they unscrew, they begin to rub against the flywheel and can completely jam the chainsaw. The following photo shows the flywheel with some scuff marks from the bolts.

To fix the problem, you will need to remove the flywheel from the engine shaft and tighten the bolts.

The chainsaw cuts crookedly

This problem can occur if the chain is dull or improperly sharpened. This applies to a greater extent to new chainsaws. But if the tire is worn out, then even after replacing the chain you will notice that the saw is pulled to the side. Tire wear can be easily determined by placing it on a level table and applying a square to it, as shown in the following photo.

In this case, you can see that there is a gap of about 2 mm between the tire and the corner. It is because of this one-sided tire wear that the chainsaw cuts crookedly. The problem can only be solved by replacing the tire with a new one.