Chainsaw has no oil supply to the chain

Chainsaw oil pump does not work

There are three main elements to the lubrication system in modern chain saws:

As the drive sprocket rotates, oil from the pump travels through the guide bar to the chain and is absorbed by the sawdust.At idle speed, the oil flow is shut off to save fuel. Some chainsaw models have an automatic lubrication system, with a flow rate that depends on how fast the drive sprocket is turning. Others have a manual adjustment of oil flow with the help of a special screw.

Husqvarna chain saw “repair”: oil problem

Husqvarna chain saw oil pump repair

230, 235, 236, 240 Online Shop Repair.

If there are splashes on it, the breakdown may be covered by the carburetor or in the starting rule. To rectify the fault you need to wipe the plug and turn off the fuel supply. After that, the starter motor starts.

In this way the combustion chamber is ventilated and the excess fuel is removed. After that, the spark plug is put in place and the chain saw begins.

If there is a build up on the spark plug, it is an indication that the Huskvarna 137 is running on low-quality fuel. In addition, a deposit is formed as a result of improper fuel to oil ratio. For the tool to work as long as possible, you need to carefully study the instruction manual.

If a buildup builds up on the spark plug, it must be carefully removed. You can use an awl for this. The electrodes are carefully rubbed with sandpaper. It is then put back in place. In addition, you need to fill the fuel that is recommended for this model of chainsaw.

Here you can read an article about chain saw repair at 350.

Why Chainsaw Oil Leaks

Building and DIY in plain language

STIHL 180 chain saw oil supply repair

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

The machine weighs around 4 kg. The power is up to 1.5 kW and the bar is 35 cm long.

Note that the semi-professional device for this saw model inherited electric ignition and a fairly sharp chain tensioning. chain from a chainsaw. You’ll understand why it leaks: Why oil leaks from underneath. In addition, the STIHL MS 180 has two tanks, designed for gasoline and oil consistency.

One of its main features is reduced vibration.

This is achieved by using 4 shock absorbers. It’s no secret that over-damping has a harmful effect on health, and has long been a problem in Europe.

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 masters.

STIHL MS 180 oil drain repair

The owners of this model of tool should be prepared for the fact that they can encounter such a nasty moment, as a leak of oil for chain lubrication. It is not the chain that is leaking. it is the linings. Oil is leaking from the very beginning. I don’t know. Oil can leak while working with the tool or even when it is just lying around without doing anything.

READ What kind of gasoline to fill your STIHL 180 chain saw?

What is the cause of this phenomenon?? The problem is that the oil is leaking because of tightness problems at the connection between the hose from the oil tank and the pump.

In order to solve the STIHL MS 180 problem related to oil supply, to purposefully disassemble the device.

  • Check the hose, if it is damaged, replace it with another. Or try degreasing and washing the hose, and put on a sealant, it should work.
  • Check for breakage of the oil filter, clean it (if you poured the used oil)
  • There may also be a reason for a clogged trigger, with all this there is a vacuum in the fuel tank, and affects the fuel supply. The problem may be in the carburetor adjustment and can be clogged ducts, or air filter, you need to carefully clean the filter and carburetor channels.

Little tricks of the Chinese chainsaw/oil leaks. how to fix it.Little tricks Chinese chainsaw

The video covers disassembly and proper assembly of the oil pump and sealing the oil supply pipe

If there is no oil flow to the chainsaw chain, This is exactly why the oil is leaking. If there is no oil flow to the chainsaw chain during operation, out of service, oil Why oil. How.

READ Not lubricating on STIHL chain saw

How you can fix the oil leak on your chainsaw.

One case of spontaneous lubricating oil leakage

for the chain of a chain saw. Repair.

In general, the problem is due to bad oil.

It is not advised to add oil to your chain saw!

Which oil to fill for your STIHL 180 chain saw?

  • Do not spare money for the original oil 2-stroke STIHL HP oil is a little more expensive but cleaning costs even more.
  • You should pour high-quality fuel. it is possible to do Mobil 1, and for lubrication fit three-phase, in any case do not fill the waste.
  • Of inexpensive options mineral oil 15-40, in winter 10-30. You could use M8, for example, or M10.

Remember personal safety while working with your chainsaw.

Remember that chainsaw performance is affected by the quality of oil you use. Why gas is leaking from a Husqvarna 240 chainsaw, Why is gasoline leaking from a Husqvarna 240 chainsaw?? The machine is inoperative and parts may be adversely affected by low-quality oil.

In order to ensure that the STIHL oil pump for the STIHL MS 180 chain saw has no problems pumping oil, you should periodically inspect and clean it. Oil leaks from chain saw. A quick rundown on why the oil in the chain saw. That way the oil supply process will be normal.

STIHL MS-180 carburetor

The STIHL MS-180 carburetor has an adjustable no-load adjustment screw. No full-load nozzle adjustment or adjustments possible.

READ What kind of bar can I put on my chainsaw?

No risk of excessive idle speed adjustment:

1) Check air filter, change filter if necessary;

2) Check the spark guard and change or clean it if necessary. You can then start the engine and let it warm up.

STIHL MS 180 carburetor repair

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

If your chainsaw won’t start, then apply the following steps:

1) open and close the gas tank cap;

2) it is advisable to remove the plug and then drain it;

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

The problem is with the blind flap which becomes blocked and causes a vacuum. All about chainsaw repair with your own hands I’m not leaking oil from why in a chainsaw. To eliminate this inconvenience it is necessary to clean the valve (trapdoor) with a needle.

Systematically check the filter, if the muffler is clogged, then the device will not be able to give the power that it is laid down.

If you have purchased a chain saw with a warranty (it is usually the only way to go), send it in for service immediately.

The STIHL MS 180 chain saw is very easy to operate, has good ergonomics and offers a number of tangible advantages.

Chainsaw chain lubrication system

To supply oil for chainsaw chain lubrication, a special pump is used in the tool, which doses, depending on the number of engine revolutions, the lubricant to the saw bar.

Chain oil with optimized adhesive properties is used in the system, this is to spread the oil around the bar evenly and keep it there, even at high chain rotation speeds. Let’s take a closer look at the oil supply system implemented in modern chainsaws.

Chain lubrication system for chainsaws

To supply chain oil for chainsaw chain lubrication a special pump is used in the tool, which doses the lubricant to the saw bar according to the number of engine revolutions.

The system uses chainsaw chain oil, which has increased adhesive properties, this is necessary to distribute the oil evenly over the entire perimeter of the bar and retain it on it even at high chain rotation speeds. Let’s take a closer look at the oil system implemented in modern chainsaws.

Oiling the STIHL 180 chain saw chain

Construction and Dacha in a clear language

STIHL 180 chain saw oil supply repair

Every year technology becomes more perfect, greatly simplifying the labors of modern workers.New and improved models are constantly arriving on the market. Why the spark plug fills up on a chain saw. On the final disassembly of the STIHL 180 chain saw. But even any tool requires proper care. The STIHL STIHL 180 chain saw is no exception. In this article we’ll show you how to fix it properly.

STIHL 180 chain saw repair

In order to do the right repair, it is necessary to understand the inner mechanism. This principle applies to any machine. Let’s take a look at some of the most popular cutting problems you may encounter with your STIHL chain saw.

1.Owners are often faced with leaking oil, which is usually used to lubricate the chain. You have to take the handwheel and the carburetor off the STIHL STIHL 180 chain saw. This could be caused by leaks in the hose connection between the oil tank and the pump.

To remove this problem, the tool should be completely disassembled. Then check the couplings and change the hose to a quality alternative if necessary.

READ Saws. Selection and Adjustment.Part 1.

If you can not buy a new hose, remove the old hose and degrease the fitting and the hose. After that you need to install the self-tightening clamps, which firmly ensure the tightness of connections. That will solve the problem.

Check and clean the oil filter.

STIHL 180 oil drain repair

The STIHL 180 should be serviced if you find that your chain is dry. Look carefully at the oil passages and clean them well. Clogging of the passages is not uncommon.

Checking the chain lubrication system on the STIHL MS180 chain saw

STIHL ms180 chain saw repair by yourself. Saw chain does not lubricate. Disassembling a STIHL 180 Part 1 vasiliy. STIHL 180 chain saw Disassembling: Finding and repairing the cause of self-service

For a better overview we recommend you watch the STIHL 180 oil feed repair video.

STIHL 180 chain saw STIHL MS180 instruction video

If your saw won’t start, you should do a thorough diagnosis of the tool. First it is necessary to check the air filter and serviceability of the plug. To do this, unscrew and dry it.

READ STIHL Ms 660 Original Usa Professional chainsaw, 91.6 cc 7.1 Л.С. 5.2hp The most powerful electric chainsaw in existence

If it shows a fuel mixture on the spark plug, it means that there is too much fuel. Chain (14″; 1.3 mm for STIHL 180 saws 14 rezer ps-9-1,3-50 low price, chain saws (536. The cause may be a poorly adjusted carburetor or improper starting. Check that the fuel line is open.

Open and close the fuel filler cap. Also need to check the combustion chamber. After doing this check the spark plug and change it if necessary.

How to check and repair common problems with the STIHL 180 chain saw. The cause of malfunction may be a clogged breather plug. Here I show you the mix ratio of oil and gasoline for the STIHL mc 180 chain saw. Not only do I show you. So when you run the engine, it creates a vacuum in the fuel tank and affects the fuel supply. This can be caused by an unadjusted carburetor, a clogged carburetor or air filter.

To correct the problem you need to repair the valve which is responsible for the pressure compensation when fueling. Clean the breather plug carefully with a needle.

READ STIHL 361 saw carburetor adjustment with your own hands

To adjust the carburetor, you need to use the three screws. the highest and lowest revolutions. Adjustments should be made strictly according to the chainsaw repair manual.

Remember that the carburetor is a very complex piece of equipment because it consists of many small parts and therefore cleaning and disassembling it should be done with great care.

You must always take good care of your saw if you want it to work properly. Do not forget to clean the air filter in time and lubricate the chain of the tool with clean oil only. When storing the tool for a long time, be sure to remove the gasoline and chain oil from the tool. That way your saw will last you a long time.

The layout of the lubrication system

Depending on the chainsaw brand, the parts of the lubrication system may vary slightly structurally, but their overall number and connection scheme remains the same.

The main components of the lubrication system are:

    the oil tank is usually located in the engine crankcase.

Working principle

The pump is the heart of the system. Its working principle is as follows. As the engine speed increases, the pinion on the main shaft drives the pump shaft through a worm gearing. In turn, the rotation of the shaft creates a certain pressure in the oil duct, which causes the oil to move through it towards the tire.

The end of the oil channel is at the point where the tire contacts the tool casing, where there is a longitudinal groove on which its oil channel falls when the tire is installed.

The oil flow is necessary to keep the oil flowing to the bar regardless of how tight the chainsaw chain is tensioned. Simply said, no matter what position the bar is in when working, oil will flow to it through the groove.

The lubrication process then involves the chain which, depending on the chain model, has either a groove or a hole in the chain links through which the oil is dispensed over the bar. As engine rpm increases, so does the oil flow.

Some chainsaw models are equipped with pumps, which have an additional flow regulation, and if necessary, the amount of oil can be increased or decreased by the lubrication system.

This function is very handy, because. к. saves and does not waste extra oil.

The main brands of engine oils for chain saws

STIHL and Husqvarna are the industry leaders in the production of quality lubricants for chainsaws and brushcutters. Their product range includes conventional mineral oils for two-stroke engines and synthetic oils for heavy-duty applications. Let’s take a closer look at the range.


STIHL HP mineral oil was developed by STIHL engineers especially for use in their power tools. That is why STIHL chain saw and brushcutters owners are advised to use.

Red in color and can be stored for up to four years in a sealed container. Available in several containers, so you can choose the best packaging size. Handy 20 gram containers diluted in 1 liter of petrol have recently appeared. For those who rarely use a chainsaw, it is the right choice. Can be diluted and used immediately.

STIHL HP conforms to high European standards.

HP Ultra

Another STIHL oil. Has a synthetic base due to which it has improved burning properties, cleanliness and protection of the engine.

Recommended by the manufacturer for long-term use in harsh conditions. Ideal for low temperatures. HP Ultra is environmentally friendly, t. к. oil spilled on the ground, decomposes 80% in just 21 days.

Available in two containers, 100 ml and 1 liter. The ratio of premixed fuel is 1:50, which means that a 100 ml bottle is enough to produce 5 liters of mixture. Color green. Shelf life 4 years.

It is worth noting that STIHL oils are tested in the company’s laboratory to ensure they meet all requirements before they are released for sale.

When developing these oils, much attention is paid to fuel burnout, cold-start characteristics, biodegradability, viscosity variations at different temperatures (information from official company’s website)

Husqvarna HP 2-stroke

Husqvarna HP oil, like its STIHL counterpart HP, is also specially formulated for 2-stroke engines.

According to the manufacturer’s statement, this kind of oil has additives, which compensate low quality of fuel, which is actual for our country. The octane rating of the gasoline announced at the gas station is rarely what it actually is.

Husqvarna HP. semi-synthetic, green. Packaged in 1 liter or 10 liter containers. Mixture ratio 1:50, t. е. 20 grams per liter. It is allowed to increase the oil ratio to 1:40 if you run-in your chainsaw engine or run-in in harsh cold weather, which gives the engine more protection and extends its life.

Today, the market has a large number of lubricants for two-stroke engines from different manufacturers. For this reason it is very difficult to answer the question which chainsaw oil is better. Our opinion, you should trust the reliable companies, which are STIHL, Husqvarna, Oregon, Champion. These are the oils which will protect the engine of your tool at most and prolong its life span.

Unscrupulous manufacturers often disguise their products under well-known brands (Husqvarna, STIHL, etc.). д.). These oils are of low quality and can harm the engine. In order not to be deceived, it is necessary to buy lubricants from official representatives who have the necessary certificates for the products. How to distinguish a fake from the original can be found in

What to do if there is no oil flow?

As we’ve already found out, you need to do more diagnostics. To do this, disassemble the lubrication system. Note that with some saw models you can do this by completely disassembling the tool. So make sure you have the right tools for the job, just in case. If you are not experienced in saw disassembly, leave this job to a professional.

When the lubrication system is disassembled, you can find one of these breakdowns:

  • torn oil hose (sometimes visible with the naked eye when examining this part of the unit in advance), which must be replaced;
  • no threads on the shaft where the oil pump is placed (needs to be reattached, replaced);
  • The threads of the pump’s main gear are damaged (you must install a new one);
  • no corkscrew of the main shaft (often this problem is observed in Homelite brand chain saws), which can be solved by installing in place of the original corkscrew, a nail (perfect size, if necessary it is trimmed);
  • clogged line, this is solved by blowing (mechanically or with compressed air, sometimes a wire helps);
  • Plugged filter element (clean or replace).

Note that on some STIHL power units (e.g. the MS 180) the pump cannot be disassembled, but will become clogged over time. In this case it is flushed with gasoline or if necessary completely replaced.

Chinese saws often “suffer” from cut grooves in the main pinion, through which the force is transmitted.

Another common problem, also with STIHL products, is a clogged line. The problem is located where the oil pipe from the reservoir enters the machine. This problem is indicated by oil leaks at the bottom of the power unit. In order to remedy the situation, the handle is dismantled, the hose is taken out, cleaned and degreased, then the landing place is treated with sealant and the hose is installed again. After that, the lubrication system should start working normally.

Signs of a faulty lubrication system

The right choice of lubricant and proper operation of the system contribute to good lubrication and effective cooling of your chain saw and to total depletion of its working life.

There are several outward signs that the chain on a chainsaw is not lubricated. First of all, these are:

  • Constant oil level in the reservoir;
  • Increased load on the engine;
  • Accelerated wear on the cutting edges of the saw links;
  • a distinctive smell of overheated wood.

In the simplest case, oil starvation can be caused by clogging of the oil ducts with sawdust. This disadvantage is typical for budget headsets, which have no easy access to the problematic places.

Causes of reduced performance and system efficiency

There are several reasons why the chainsaw chain does not receive the correct amount of oil. Of the most characteristic failures, we can name:

  • clogging of the filter located in the oil tank;
  • Mechanical failure of one of the pump’s worm drive components;
  • In the winter, the high-pressure unit reduces the pumping capacity because the system is filled with too thick an oil.

In the latter case, the drives and all pump parts are subjected to high loads which cause serious mechanical damage.

STIHL 180 chain saw oil pump malfunctions

Tips for STIHL chain saw self-troubleshooting

STIHL chain saws can be repaired by the user himself thanks to their simple design. Proven in the construction segment of the tool has a power of 1400 watts, engine capacity of 31 cc. See.

The most common faults on chain saws are

STIHL STIHL 180 chain saws are operated according to the instruction manual supplied with the machine. The starting system the user turns on after making sure that there is oil, gasoline, and making sure that the chain is properly tensioned.

Work with the tool begins after it is safely secured in your hands. If the tool fails to operate, determine what is causing the STIHL chain saw malfunction.

Causes that cause the tool to malfunction may include:

  • Leaks in the oil system;
  • Formed breaks in the crankcase cord;
  • Carburetor malfunctions;
  • Air in the crankcase through the oil seals;
  • Worn condition of worm gear in oil pump;
  • No spark at the ignition section;
  • Wear on the drive sprocket;
  • Trouble with the eyelet under the control lever.

For an independent repair of a defective STIHL chain saw, tools that are in stock for every user are used.

  • Screwdriver;
  • Allen wrenches and open-end wrenches;
  • Hexes;
  • Vacuum gauge used to detect defects in the glands, carburetor, crankcase;
  • Air compressor used in blowing and cleaning assemblies and units;
  • STIHL Torx 27 T-wrench;
  • The stopper that limits the stroke of the crankshaft;
  • Remove the bearing.

Actions when a malfunction is detected in various parts of the machine

Common annoyances such as loss of power, lack of engagement, and idle speed support. Causes of such behavior of the tool are caused by malfunctions of the chainsaw carburetor. This is manifested by contamination with dust particles, sawdust. Such a breakdown without problems can be eliminated on its own.

The carburetor is cleaned using:

Malfunctions and troubleshooting

Problems with the oil pump can be divided into two categories. The first is a complete lack of oil supply, the second. leakage. Depending on the type of problem and the main “symptom”, there are various steps to be taken.

No oil supply

If there is no oil supply to the saw head but you do not notice any leakage, it can be assumed that the ram remains stationary. Why does the plunger stay in place?? It can wear out or the screw it is connected to is not installed correctly. The latter can stand in an unnatural position for itself, which often happens due to improper assembly of this unit.

You need to look at the /-, special marks. Such marks, of course, can be lined up in the correct position, but the screw will not stand as it should (opposite). How to correct such a problem? Simply disassemble the pump and put the screw as it should. Sometimes it is enough to turn it to the “-” mark. The screw itself can’t fit into place, so it’s blocking the plunger’s movement.

And how do you know if the plunger is worn out?? Pay attention to its end, or rather to the edge of this end, which can be ground. Then at this place you will not see the characteristic protruding part. This place with the whole edge will be about level. How to solve this problem? There are two options:


Problems with the oil pump can be divided into two categories conditionally. One is no oil supply at all, the other is leaking. Depending on the type of problem and the main “symptom”, you need to act differently.

No oil supply

If there is no oil supply to the saw head but you do not notice any leaks, it can be assumed that the plunger remains stationary. Why does the plunger stand on end?? It could be worn out or the screw it is connected to is not installed correctly. The latter may stand in an unnatural position for itself, which often happens due to improper assembly of this unit.

The /-, the special marks. Such marks, of course, can be lined up in the correct position, but the screw will not stand as it should (opposite). How to correct such a problem? Simply disassemble the pump and put the screw back on properly. Sometimes it is enough to turn it to the “-” mark. The screw itself can’t get in place, that’s why it’s blocking the plunger movement.

How do you know if the plunger is worn out?? Pay attention to its end, or rather to the edge of this end, which can be worn away. Then you will not see the characteristic protruding part on this place. That place with the whole edge will be about level. How to solve this problem? There are two options:

If you choose the second option, don’t forget to grind the center ledge. Keep in mind that the pump will work after turning, but the oil flow will be increased by displacement of the plunger.

Sometimes there is another problem, and that is that the oil is leaking, but the pump is not working as it should. Then you need to check the inlet and outlet hose. One of them might come loose. If this happened to the inlet one, oil will leak even when the saw isn’t running. If the outlet hose is disconnected, oil will pour out when the pump is started. Fix such a problem is easy, just reconnect the hoses.


It would seem that we have covered the cause of oil leakage. Yes, indeed, it sometimes happens because of disconnected hoses. But, it has nothing to do with the pump itself. So now let’s look at the causes of leaks, which are related to pump malfunction.

Leakage can occur when the rubber cuff no longer provides a seal. The collar may be badly worn, or it may not be installed as it should be.

Before you look for a new pump on your Partner chainsaw because of constant leaks, remove the components and consider the collar, which may be mounted with the collar turned toward the oil reservoir. If it is standing like this, turn it around about 180 degrees. If you see that the seal is worn out, replace it with a new one. Of course, try to find the perfect cuff. If you can’t find one, buy a seal ring at a plumbing store.

If after that you still observe leaks, examine the walls of the pump cylinder, which may be worn. In this case it is easier to buy a new pump.

Oil pump malfunctions

Regardless of the manufacturer, the lubrication system of any chainsaw model is not functioning as it should.

chainsaw oil pump complete

The lubrication system isn’t always what it looks like, so before you start, pinpoint the cause of the oil leakage or leakage on the bar. If you exclude the possibility of mechanical damage, you can identify the following lubrication system failures:

  • Line connected to chainsaw oil pump outlet port not leak tight;
  • Parts in the ram system do not fit together tightly;
  • No correspondence of discharge chamber parameters and plunger dimensions;
  • Oil tube is leaking at oil pump inlet fitting.

It is necessary to remember that in the absence of tightness of plunger system and the location of the grease tank above it, there will be a rapid leakage of oil (2-3 days).

It’s easy enough to fix a chainsaw oil leak if you don’t use it for a long time. Requires a few screwdrivers and a locksmith’s wrench.