How to fix an oil leak in a Chinese chainsaw

How to Clean a Chainsaw Oil Leak

The saw is a 2010 model year. Used mostly in the country house and on the annual August trips to Karelia. I would not say that the direct damage it to the trash, rather exploitation is rare and sparing. I never built a log house with it. So, a tree to fell, a pole to saw off And for the last year I have been suffering from such a problem: there is always a puddle of oil under the saw. Chain lubrication reservoir is leaking. I’ve changed the pump two times, changed the rubber, in which the pump piston is inserted. it still leaks.In the summer, a full tank can leak overnight. It took me a while to figure out that it is not the pump, but the metal strip under the “bar”. Behind it at the top there is a hole with a piece of PVC tubing inserted into it, going into the oil tank.

Well, it’s always leaking from there. I tried to leave the saw on its side, I did it this way and that, but there’s a puddle under the saw. Has anyone had a problem with this?? I can fix it or suffer all the time? It didn’t leak before.

STIHL STIHL 180 chain saw oil supply repair

The STIHL MS 180 chainsaw is an indispensable tool for cutting wood and other construction jobs in wood. This is one of the most widely recognized gardening devices that is armed with functionality.

The tool weighs about 4 kilograms. The power reaches 1.5 kW, and the length of the bar is 35 cm.

Note that the semi-professional device for this saw model inherited electric ignition and fairly sharp chain tensioning. chain from the chain saw. see why it leaks: Why is oil leaking from underneath. The STIHL MS 180 also has two tanks for gasoline and one for oil.

One of the main features is the reduced vibration.

This is the result of 4 shock absorbers. It is no secret that the highest shock absorption harmfully affects human health, and in Europe it has long been fought.

It should be emphasized that without the help of others to disassemble this saw without special instruction is not better, in this case it is better to entrust the device to masters.

STIHL MS 180 oil repair

The owners of this model of tool should be prepared for the fact that they may encounter such a nasty moment, as a leak of oil for chain lubrication. Definitely not a chain leak, but leaking from under the linings. Oil has been leaking from the beginning. I don’t know. Oil can leak out when you’re working with tools and even when just lying around without doing anything.

What is the cause of this phenomenon?? The thing is that the oil leaks because of tightness problems in the area where the hose from the oil tank and the pump is connected.

Trivia on a Chinese chainsaw / oil leaks. how to fix it.Little tricks Chinese chainsaw

The video reviews disassembly and proper assembly of the oil pump and sealing of the oil feed tube. How.

Insufficient flow of fuel mixture from the carburetor to the cylinder or a disturbance in the correct ratio of fuel and air mixed in the carburetor can occur due to several reasons: clogged air filter, unregulated carburetor, clogged channels or filter screen.

As a rule, the repair of chain saws does not do without cleaning the air filter, because it gets dirty quite quickly. When this occurs, the air flow into the carburetor is reduced and the fuel mixture is over-enriched at the carburetor outlet, preventing normal engine operation. It is necessary to remove the dirty filter for cleaning carefully, so that the dirt from it does not get into the carburettor. The filter should be cleaned or washed in water with some detergent, dried and reinserted.

Carburetor misalignment can be corrected by adjusting the carburetor. This is usually done with three screws. maximum and minimum rpm and idle speed screw. Adjustment should be carried out strictly in accordance with the instructions as failure to do so may result in engine damage. Some saw manufacturers leave only one adjusting screw (idle speed). to exclude undesirable interference of inexperienced users in the carburetor operation. Adjustment example how to adjust the carburetor on a chain saw see the article Working with a chainsaw.

If the adjustment of the carburetor did not help, you need to clean its channels and filter grid, and at the same time check the integrity of the membrane. Carburetor. is one of the chain saw’s most complicated devices, which is why it is important to understand the responsibilities of disassembly and cleaning. It consists of a variety of small parts, which have the peculiarity to pop out of their places unnoticed and irretrievably lost, so that, having disassembled this capricious device, you can not collect it.

Below is a diagram of another chainsaw carburetor.

If you don’t have experience and confidence in your own abilities, it is better to entrust the repair of your chainsaw carburetor to a specialist in the service center. Sometimes for quality cleaning of the carburetor it is necessary to use ultrasonic cleaning.

Muffler. Often the cause of engine malfunction, especially when the engine operates normally at low RPM and shuts down under load, is a clogged muffler spark arrestor with combustion products, which prevents normal exhaust. Repair in this case consists of removing the muffler, disassembling it (if it is demountable) and wet cleaning it from soot with detergents. After washing the non-disassembled muffler is dried with a hair dryer. Remember that soot contains carcinogenic substances, and dry brushing, which can lead to their inhalation, is unacceptable. When removing the muffler, the engine exhaust port is plugged with a clean rag.

It would seem that why do you need a chainsaw for a countryman who grows vegetables and fruits, or a country house owner who has a small garden and a few flowerbeds?? The question falls away when the desire arises to build a bathhouse, update a greenhouse, fell old business, or simply make a bench for resting. Unfortunately, any mechanism periodically needs preventive maintenance and replacement of spare parts, and for this it is necessary to understand well the device of the product, in addition, the repair of the chainsaw with their own hands will save time and money.

Parts of a chainsaw

All chainsaws are similar in their construction, no matter whether they are European-made (Echo, STIHL, Husqvarna) or domestic-made (Kedr, Ural). Inside the body are the main components: fuel tank and engine, and outside are the starter motor, handle, and saw part (guide bar) with the chain. A jerk of the cord starts the engine, which starts the saw blade.

To begin, we suggest you read the videos, which show how the chainsaw is built and how it works:

Occasionally the saw malfunctions and needs to be disassembled to fix it. What can happen to an uncomplicated machine like a chainsaw? At least the following:

  • Stops starting;
  • Starts, but soon stops;
  • Stops functioning in the cut;
  • Loses power;
leak, chinese, chainsaw

Most of the problems are either the result of malfunctions in the engine (fuel system, exhaust system, ignition, cylinder-piston system) or of malfunctions in other systems and components (clutch, chain brake, guide bar, lubrication system). Here’s a look at the most common malfunctions and how to fix them.

A chainsaw that fails to work starts up in one fell swoop and doesn’t make a bad cut

carburetor malfunction

If all of the above steps were not successful, your chainsaw may be failing because of a faulty carburetor.

STIHL STIHL 180 chain saw oil repair

The STIHL MS 180 chain saw is an indispensable tool for wood harvesting and other building tasks. This is one of the most widely recognized gardening devices, which is armed with functional abilities.

The weight of the tool is about 4 kg. The power is up to 1.5 kW and the bar length is 35 cm.

Note that from the semi-professional device for this model of saw got the electric ignition and a fairly sharp chain tension. Saw chain out of chain saw. you will understand why it is leaking: Why is the oil leaking from under the. The STIHL MS 180 has two tanks for gasoline and one for oil.

One of the main features is reduced vibration.

This is the result of 4 shock absorbers. It is no secret that high shock absorption has a harmful effect on human health and has long been fought in Europe.

It is necessary to underline that without the help of others to disassemble the given saw without special instruction is not better, in this case it is better to entrust the device to masters.

Husqvarna saw disassembly algorithm

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

  • Top cover.
  • Chain and chain brake cover and saw headset.
  • Starter.
  • Flywheel and clutch.
  • Front handle.
  • Carburetor.
  • Oil pump.
  • Engine.

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

Important: chain saws should be cleaned before you disassemble them. Working with the saw produces a lot of chips and wood dust, which can get into the internal parts of the Husqvarna chain saw when it is disassembled

Removing the side cover and saw headset

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

After unscrewing the nuts, the cover is removed from the guide rods and the guide bar and chain can be removed from the chain saw. Some Husqvarna saws have a special mechanism that allows you to remove the cover and saw headset without using special tools.

Starter

The starter is located on the right side of the Husqvarna and is held on several screws. By opening them up you can easily remove the starter motor and access the flywheel and ignition coil.

Removing the flywheel and clutch

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

Once the piston stop is installed in the cylinder, you can unscrew the flywheel nut. After the nut is unscrewed, using a hammer and a mallet of soft material, make a sharp blow by placing the mallet on the flywheel mounting shaft. This is necessary to remove the handwheel from the shaft. к. the construction provides for installation and tightening of this element with a great effort.

To learn more about how to remove the flywheel from a Husqvarna chain saw, as well as how to completely disassemble the saw, watch this 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 wrench. If you don’t have a spanner, you can make it from an old twenty-two crown by sharpening it in a certain way with an emery.

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

It’s easy to remove the front handle on a Husqvarna, t. к. it is fastened to the shock absorbers with screws.

Air filter and carburetor

To remove the carburetor it is necessary to disconnect the fuel hose and slide rods, it is convenient to do it after dismantling the air filter, which is installed immediately behind the carburetor and held by two nuts for 10. Once the air filter is removed and the fuel hose and rods are disconnected, all you have to do is pull the carburetor toward you and remove it from the studs.

Oil pump

The oil pump on the Husqvarna is mounted on the right side of the chain saw. It can be removed only after the clutch is unscrewed. No special tools are required for removal, t.к. the fastening screws are made to fit a normal Phillips screwdriver. After the screws have been unscrewed, it is necessary to lift the pump and disconnect the oil hoses from it.

Engine

To remove the engine on a Husqvarna chain saw after removing the carburetor, clutch, flywheel and muffler you must remove the four screws that secure the engine to the housing.

Once the engine is removed, the ignition coil can be unscrewed from it, remembering to first disconnect the wires running from it to the ignition switch. The coil can also be removed after the starter is removed.

To assemble the chain saw the Husqvarna must be done in reverse order, tighten the flywheel nut and the clutch with the force that is specified in the instruction manual of the chain saw.

Advantages of high-end oil pumps

The serviceability of disassembled pumps is sufficient to restore the unit to normal operation at home.

The pump drive gears of budget chainsaws are mostly polymer. Technically advanced, brand-name models with adjustable capacity are equipped with drive mechanisms made of non-ferrous metals. Cost of such systems is compensated by economical, up to 50% working fluid consumption.

Peculiarities of independent troubleshooting

Fully independent repair of chain saw chain lubrication, all things being equal, requires knowledge of the interaction of all elements of the system, the availability of tools and locksmith skills.

Repair of operating parameters of many chainsaws involves partial or complete removal of components. For demanding repair jobs, it is better to use the capabilities and technical potential of service workshops.

You should replace parts with damaged threads, splined joints and non-disassembled components in the lubrication system of the STIHL 180 and other chain saws of the same type.

If there is no oil flowing into the headset structure when the tank is primed, the cause should be sought in the pump itself. Disassembly and disassembly of the mechanism will help identify faulty parts and fix the problem by replacing them.

How to fix an oil leak on a chainsaw.

One case of fixing spontaneous chainsaw chain oil leakage. Chainsaw oil pump repair: Another video on the subject: Do-it-yourself repair at home. Doing all things with our own hands. Do-it-yourself construction and repair. Making small agricultural tools for kitchen gardening. Repair of motorized equipment, chainsaws and chainsaws. Independent repair of household electrical appliances. Easy and affordable car and motorcycle repair. Our group in “”: Our group in “Odnoklassniki”: Our website:

Why chainsaw chain oil leaks. Why is oil leaking from a chainsaw?

No need for complicated repairs or any devices, the problem is solved simply and even without tools! Just understand why chain saw chain oil leaks and take simple steps. Why is the oil leaking and how to avoid it. see in this video! Have a nice look!

leak, chinese, chainsaw

Chain brake does not work

Faults in the fuel system are also quite often the main reason for not allowing the chainsaw to work as efficiently as possible. The first thing to do is check the quality of the fuel mixture.

If gasoline drips periodically appear on the body of the chainsaw, you should check the fuel tank for leaks. Over time, it can get loose. Or the gasket is “cured” and it can no longer perform its direct function.

If full-fledged gasoline streams appeared, then there is a good chance that you will have to change the burst hose that connects the carburetor and the fuel tank.

There are several reasons why the fuel mixture has stopped flowing into the cylinder:

  • The air filter is clogged.
  • The carburetor settings are off.
  • The carburetor diaphragm is no longer intact.
  • Channels through which gasoline is transported are clogged.

In this case you should start looking for the problem with the filter elements. In most cases, it is because of the reduced capacity of the air and gasoline filters that the idle speed starts to “float”.

If the filters are okay, check the carburettor components, and also make sure that the carburettor settings are not accidentally changed.

In some cases, chainsaw users note other problems that don’t significantly affect the tool’s performance.

Most often, excessive smoke occurs when there is too much oil in the fuel mixture, which does not have time to burn completely. You should also check to see if the carburetor settings are off.

In most cases, recoil at startup signals a clamping of the decompressor. If the tool is not equipped with a decompressor, then, most likely, the ignition system is broken.

In the first case, first inspect the ducts that carry the oil to the tire and clean them. Clogged tubing is quite common.

If there is a big oil leak (a little oil is normal for all gasoline saws) you should check the tightness of the tubes and the oil pump connections. The tubes can be loose or even cracked. Tubes that are leaking are repaired by replacing them or by sealing them with a sealing material.

As for the oil pump, then different models of chain saws, they can be different designs, and the drive is also carried out differently (usually driven by a drive sprocket or a special pinion on the crankshaft). If the problem with the oil pump, then most often you do not have to completely replace this entire unit, it will be enough to replace its moving part (plunger), it most often fails due to the ingress of large amounts of dirt and sawdust.

The most serious damage is a crack in the oil pump housing. If so, you must replace it completely.

leak, chinese, chainsaw

Read Why honeycomb honey is more expensive

The chain brake may malfunction if the underbody and brake band are contaminated with grease and sawdust. Also, the chain brake may not work because the brake band is worn. If there is sawdust on the sawdust. clean the sawdust and if the belt is worn out. replace the belt with a new one.

Problems with the starter mechanism

Many problems arise when trying to start a new saw or a machine that has been sitting in storage for a long time. In this case, you must:

  • Set the switch to the “closed flap” position;
  • Forced the fuel mixture into the carburetor by the pump;
  • Pull the starter rope to a position where you really feel the resistance of the motor;
  • Vigorously pull the starter cord several times. Usually after that, the engine will start but immediately shut down;
  • Move the lever to the operating position and pull the starter rope again. The engine should start normally.

Oil pump malfunctions

Regardless of the brand, the lubrication system of any chainsaw model has faults.

Chainsaw oil pump assembly

The nature of faults in the lubrication system can be different, and therefore before you start repairing it is necessary to determine the exact cause of oil leakage or lack of oil on the tire. If you exclude the possibility of mechanical damage, the following breakdowns of the lubrication system can be identified:

  • Loose connection between oil supply line and chainsaw oil pump outlet;
  • Tight fit of parts in the ram system;
  • The plunger and plunger dimensions do not match;
  • Loose oil line to oil pump inlet fitting.

It is necessary to remember that if the plunger system is not tight and the lubrication tank is located above it, oil will flow out quickly (2-3 days).

It’s easy enough to get rid of a chain saw’s oil leak if you don’t use it for a long time. You will need a few screwdrivers and wrenches.

Improve chain saw tire lubrication.A simple way to improve chain lubrication.

After a lot of agony associated with poor lubrication of the chain on my Chinese chain saw, I finally found a way out of this situation.Made an additional kerf on the bar is finally began to properly feed the grease into the chain.I will note immediately that the pump changed the tube cleaned, tried oil of different viscosity, changed the two bars, in general, did everything you can think of and at the end helped a little saw on the bar what you can see in a short video clip. After the long torment associated with the weak lubrication chain of my Chinese chainsaw, I finally found a way out of the situation. After making an additional cut on the tire, the lubricant finally started to flow normally to the chain. I note immediately that the pump changed the tubes, cleaned the oil, tried different viscosity, changed two tires, in general, did everything that could be thought of and on the ending helped a little drunk on the tire about what you can see in a short clip.

How to fix an oil leak in a chainsaw /Chinese chainsaw 4500. Oil Pump Repair

NEW ON THE CHANNEL: Chainsaw Sawing Wrong? HOW TO SAVE A TIR AND A CHAIN In this video we look at how to repair the chainsaw oil pump and seal it in the housing. And this is a similar video, which shows a few additional nuances about installing and remaking the oil pump there interesting: Overview of the tachometer on my channel: And also the entire playlist of chainsaw repair on my channel: