How to Change the Oil Pump on a Chainsaw

All about the Stihl 180 Oil Pump

As the oil supply mechanism for chain lubrication, the Stihl MC 180 chainsaw uses a mechanical oil pump. What is noteworthy, the Stihl 180 oil pump is completely made of metal parts and is practical and highly reliable. Let’s take a closer look at how the Stihl 180 chainsaw oil supply system is organized.

how to change the oil pump on a chainsaw

Pump design, lubrication systems and principle of operation

The oil pump drive consists of two parts, this is a plastic gear with a worm gear and a wire lever that transfers force from the sprocket wheel to the worm gear.

One of the main malfunctions of the oil system of the saw is a defective thread on the plastic gear of the oil drive, therefore, whenever possible, it is necessary to control its wear and thread quality.

The lever is rigidly fixed to the gear, and they are delivered as one part. The tip of the wire lever has a characteristic bend, which is designed for better traction with the drive drum-sprocket. A special slot is made on the drum for mounting the drive.

The Stihl 180 oil pump is completely made of metal and has a non-separable design. On the pump casing there is a receiving hole for oil and a groove-channel through which oil from the oil wire enters directly into the pump. The mechanism is installed in the body of the Stihl 180 chainsaw.

At the time of increasing engine speed, the drum. sprocket starts to rotate the worm gear for the wire lever, and it, in turn, causes the plunger of the oil pump to rotate, as a result of which the oil begins to be pumped through the oil channels to the chainsaw tire.

In the operation of the system, the oil line of the chainsaw is directly involved, at the end of which there is an oil receiver. The oil receiver is also a filter. On the second side of the oil hose, rubber expansion is performed, with which the hose is installed in the Stihl 180 chainsaw body immediately after the oil pump.

Malfunctions of the pump and the system as a whole

As you know, in this world there is nothing eternal and over time everything has to be repaired. So the Stihl ms 180 oil system is no exception, and has its own specific malfunctions. Let’s consider them in more detail.

Symptoms of a lubrication system are as follows:

  • chainsaw chain is absolutely dry and does not shine;
  • oil from the oil tank does not go away;
  • the chain stretches quickly and this happens all the time;
  • takes away the saw tire when sawing, to the side;
  • the tire warms up and in the area of ​​the leading sprocket, the paint is melting.

All these signs, directly or indirectly indicate problems in the chain saw chain lubrication system.

The first thing to do after you suspect that chain oil is not flowing is to check its supply. There are two ways to do this. The first is described in detail in the instructions for the tool and consists in the fact that you need to start a chainsaw, add gas as much as possible and direct towards an obstacle.

With a good lubrication system, the oil will fly off the tip of the tire and a strip of oily drops will appear on the surface towards which the tire is directed. If there are any irregularities in the system, the surface will remain clean.

The second way is to remove the tire from the chainsaw and run it. When the engine speed increases, in the place where the tire shank is installed, oil will flow from the oil channel, if this does not happen, it is necessary to look for the cause of the malfunction.


Diagnostics should begin by inspecting and checking the oil receiver (filter) of the Stihl 180 saw. As a rule, if the filter is very dirty, the oil supply may stop.

In order to save, a clogged filter, you can try to clean, thoroughly rinsing it in gasoline.

Next, you need to remove the drum sprocket, and check the condition of the pinion gear. The thread on it should be clearly defined, not licked and not have any other defects, also with the gear removed, it is necessary to check the wire lever. It should compress the gear tightly and not turn, otherwise, the gear stands still and does not transmit force to the pump, as a result of which the oil supply stops.

If all of the above methods to detect and eliminate malfunctions have not yielded results, extreme measures must be applied, i.e., dismantle the pump.

How to remove the pump

The oil pump is installed on the right side of the bottom of the case, in the same place the oil pipe coming from the tank of the chainsaw approaches it. To remove the pump, you will first need to free the saw from the handle; for this, the back handle of the unit is untwisted and the throttle control rod is disconnected. At the next stage, you need to remove the plugs of the shock absorbers of the handle and using a powerful slotted screwdriver, squeeze them out of their seats on the handle.

After the handle is removed, the chainsaw body is turned upside down. The hose going from the oil tank to the pump will be visible immediately. It must be removed from the seat.

The pump itself is removed using a screw with an M5 thread and a wide washer. The screw length should be approximately 45-50 mm. A washer is put on the screw and it is screwed into the pump (the inside of the pump is threaded). Further, as the screw is screwed in, the stop from the washer will cause the oil pump to rise along the thread. Thus, the pump is removed from its seat. Before starting work, we recommend reading the article on how to disassemble the Stihl 180.

For a better understanding of the pump removal process, you can watch the video below. In the video, the SC master shows in detail how to remove the oil pump from the chainsaw, and also describes the main malfunctions of the feed system.

The Stihl 180 oil pump is a very high-quality and reliable part, therefore it is necessary to change it only in the last resort, when all other elements of the system have already been checked.

After the pump is removed, it must be cleaned and purged. As a rule, the main breakdown of an oil pump is its blockage. By removing it, you can install the pump in place.

Replacing the pump is only required if it is not possible to eliminate clogging.

The cause of oil smudges on the bottom of the chainsaw

The Stihl 180 chainsaw has a characteristic malfunction, which consists in insufficient sealing of the installation site of the oil hose in the chainsaw body and the appearance of a leak in this place. To eliminate it, it is enough to remove the handle of the Stihl MS 180 saw, disconnect the hose itself, rinse and degrease the seat in the body and the hose end, then apply sealant and reinstall the hose. Such a simple operation will reliably eliminate the malfunction and the oil will cease to leak.


The Stihl 180 chainsaw oil pump is a reliable and unpretentious part, which is rarely the reason for the lack of chain lubrication. Disassemble and change the pump, it is necessary only in extreme cases, when there is confidence that the reason is 100% in it. You can do this with your own hands, because this operation is quite simple.

Country affairs

Building and Cottage in plain language

Stihl 180 chainsaw oil supply repair

Chainsaw STIHL MS 180. an indispensable tool designed for harvesting wood and other construction work from wood. This is one of the most recognized garden devices that is equipped with multifunctional features.

The mass of the tool is about 4 kg. Power reaches 1.5 kW, and the tire length is 35 cm.

Note that the semi-professional device for this saw model got electronic ignition and a fairly fast chain tension. In addition, the STIHL MS 180 saw has 2 tanks designed for gasoline and for the oil mixture.

One of the main features is reduced vibration.

This result is achieved thanks to the 4 shock absorbers. It is no secret that high depreciation adversely affects human health and has long been struggling with in Europe.

It should be noted that it is not advisable to disassemble this saw without special instruction, in this case it is better to entrust the device to the masters.

STIHL MS 180 oil supply repair

Owners of this model of tool should be prepared for the fact that they may encounter such an unpleasant moment as oil leakage to lubricate the chain. Oil can leak out while working with the tool, and even when it is simply lying idle.

What is the reason for this phenomenon? The fact is that oil leaks due to leakage in the area where the hose from the oil tank and pump is connected.

In order to solve the problem of STIHL MS 180 related to the oil supply, it is advisable to disassemble the device.


  1. Check the hose, if it is damaged, replace it with another. Or try to degrease the hose and rinse, and put on sealant, it should work.
  2. Check for damage to the filter oil, clean it (if you have refilled)
  3. There may also be a reason for the clogged crap, which creates a vacuum in the fuel tank, and affects the fuel supply. The problem may be in the carburetor adjustment and the channels, or the air filter, may be clogged thoroughly clean the filter and carburetor channels.

In general, the problem is mainly due to poor oil.

It is not recommended to pour oil into a chainsaw that is not intended!

What type of oil for stihl 180 chainsaw (stihl 180)

  1. Do not waste money on the original oil. Stihl HP 2-stroke oil is a little more expensive but cleaning is even more expensive.
  2. It is necessary to pour high-quality fuel into Mobile 1 as well, and three-phase is suitable for lubrication, in no case should filling workings be done.
  3. From inexpensive options, mineral oil is 15-40, in winter 10-30. You can M8, for example, or M10.

Remember personal safety when working with a chainsaw.

Remember that the quality of the oil being added affects the operation of the chainsaw. Low quality oil can cause the instrument to work inefficiently and adversely affect its parts.

In order for the STIHL MS 180 oil pump to supply oil without difficulty, periodically check and clean the pump. Therefore, the oil supply process will be normal.

Repair oil supply video

Carburetor STIHL MS-180

The STIHL MS-180 carburetor is equipped with one idle adjustment screw. The full-load jet is not adjustable, that is, it cannot be changed.

You need to know the basic rules for setting the idle speed:

1) check the air filter, if necessary, change it;

2) check the spark protection grille, if necessary, change or clean it. Then you can turn on the engine, and then warm it up.

Carburetor Repair STIHL MS 180

Carburetor repair STIHL MS 180 is a very difficult process. Note that during repair, the risk of sudden changes in the cylinder-piston group is practically absent.

If the chainsaw does not start, then apply the following steps:

1) open and close the gas tank cover;

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

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 gas supply process and the functioning of the spark plug.

This problem is associated with a valve (blind), which becomes clogged, and as a result a vacuum forms. To eliminate this inconvenience, you need to clean the valve (blindman) with a needle.

Systematically check the filter, if the muffler is clogged, the device will not be able to give off the power that is embedded in it.

If the chainsaw was purchased with a guarantee (there can usually be no other option), immediately bring it to the service.

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

And also watch the video Dismantling the STIHL MS180 chainsaw

Chainsaw oil pump: repair, prevention

A chainsaw is an effective and simple in design tool, but with prolonged use it can malfunction. An important role in sawing wood is played by the oil pump of a chainsaw, which supplies lubricant to the cutting edges through a special hole. In the process, chain links are exposed to thermal and mechanical stress. Thanks to the oil supplied by the pump, friction forces are significantly reduced and, as a result, the intervals between sharpening the chain or replacing it increase.

The principle of operation of the oil pump

The vast majority of imported and domestic chainsaws are equipped with a valveless oil pump located on the crankcase on the side of the chain. Due to the segment cut (flat) on the cylindrical surface and the rotation of the plunger from the drive shaft through the worm gear, lubricant is supplied to the tire.

Chainsaw Pump Plunger

As the chainsaw oil pump drive rotates, the plunger first starts the oil into the discharge chamber, and after turning through 90 ° it closes the inlet and pushes the lubricating fluid back and forth. In order to give one axial movement in one revolution, an eccentric mechanism is installed at the end of the plunger, which works on the principle of a car’s camshaft. The value of the axial stroke of the shaft is limited by an annular protrusion with a profile configuration.

Oil pump malfunctions

Regardless of the manufacturer, in any model of a chainsaw there are problems in the lubrication system.

Chainsaw oil pump assembly

The nature of the malfunctions of the lubrication system can be different, and therefore, before starting the repair, it is necessary to accurately determine the cause of the oil leak or its failure to get onto the tire. If we exclude the possibility of mechanical damage, we can distinguish the following breakdowns of the lubrication system:

  1. Not tight connection of the line with the output channel of the chainsaw oil pump;
  2. Not tight fit of parts in the plunger system;
  3. Inconsistency of the parameters of the discharge chamber and the size of the plunger;
  4. Lack of tightness of the oil line with the inlet fitting of the oil pump.

To eliminate the leak of oil from the chainsaw, provided it is not used for a long time, is easy enough. To do this, you need a few screwdrivers and locksmith wrenches.

Chainsaw pump repair

It is believed that repairing the oil pump of a chainsaw with your own hands is quite problematic. In fact, in the presence of basic locksmith skills and general concepts and rotating mechanisms, it is possible to easily restore its original parameters. To do this, prepare the following tools and accessories:

Video: How to Change the Oil Pump on a Chainsaw

  • a set of curly and flat screwdrivers;
  • open-end wrenches and socket heads;
  • rags.

To eliminate pump malfunctions, it is necessary to dismantle it without touching the working part.

Chainsaw mounted oil pump

A sealing gasket must be present between the two halves of the unit, which, in the presence of gusts and elevations, will need to be replaced with a new one. The next step is to check the integrity of the feed hose. There should be no diaper rash and cracks on its cylindrical generatrix, which in the future can lead to loss of system tightness. If such lines are identified, it is necessary to replace, and rinse and install a good hose on the sealant to the ends of the tank and pump.

The output channels of the oil pump must not have foreign inclusions (dust, chips, dirt). Such congestion can lead not only to a deterioration of the lubrication process and the formation of vacuum plugs that can damage the supply lines.

Preventive measures

In order to prevent the occurrence of lubricant leaks, it is necessary to periodically perform maintenance on the chainsaw oil pump. During operation and upon completion, it is necessary to observe the smudges of oil and, if they are detected, immediately haul the connection elements.

Channel cleaning compressor

Before starting work, it is necessary to check the level of lubricant in the reservoir. It is best to use the oil recommended by the manufacturer for the chain. In no case should mining be cast due to its heterogeneous structure and the presence of metal inclusions.

To prevent the formation of vacuum congestion in the lubrication system, it is periodically necessary to purge the channels of the oil pump with compressed air. Upon completion of sawing work, the unit must be cleaned of residues of sawdust and dirt. At the beginning of the season, in order to uniformly spread the lubricant along the chains of the chainsaw, it must be suspended in a vertical position in working condition for several minutes.

How to repair Stihl chainsaws yourself: tips

The consumer can repair Stihl chainsaws independently due to the simplicity of the design. The tool recommended in the construction segment has a capacity of 1400 watts, an engine capacity of 31 cubic meters. cm.

The tool has excellent recommendations, popularity among users. This is due to a reasonable price and quality characteristics. However, the operation of the chainsaw is periodically accompanied by breakdowns.

The cost of repair work in the service is quite high. In many cases, their own technical knowledge allows consumers to repair their own Stihl 180 chainsaws with their own hands.

The most common types of chainsaw malfunctions

The Stihl 180 chainsaw is operated in accordance with the instructions supplied with the tool. The user starts the start-up system after he is convinced of the presence of oil, gasoline, and makes sure that the chain is correctly tensioned.

Work with the tool begins after it is securely fixed in the hands. If a tool malfunction is detected, it is necessary to determine what caused the Stihl chainsaw malfunction.

The causes of the malfunction of the tool may be:

  • leakage in the oil system;
  • clippings formed in the crankcase cord;
  • carburetor malfunctions;
  • air entering the crankcase through oil seals;
  • worn gear in the oil pump;
  • no spark appears on the ignition section;
  • worn drive sprocket;
  • violation of the integrity of the eye under the control lever.

To carry out an independent repair, a failed Stihl chainsaw, the tools that are in stock at each consumer are used.

It can be:

  • screwdrivers;
  • Socket and wrench keys;
  • hexagons;
  • vacuum gauge used to determine defects in oil seals, carburetor, crankcase;
  • air compressor used for purging and cleaning units and assemblies;
  • T-key STIHL Torx 27;
  • stopper restricting crankshaft travel;
  • bearing puller.

Actions in case of malfunction detection in various parts of the unit

Unpleasant phenomena such as loss of power, lack of connection, and idle support are common.

The reasons for this behavior of the tool are the malfunctions of the chainsaw carburetor. This is expressed in pollution by dust particles, sawdust. Such a breakdown can be fixed on its own without problems.

Carburetor cleaning is carried out using:

  • a small amount of gasoline;
  • Phillips screwdriver
  • brushes;
  • heads, size 8.

The sequence of steps when performing repairs:

  1. To begin repairing the carburetor, they begin by cleaning them of dirt and dusty particles, fine wood. To do this, use a brush. When the surface is completely free of debris, the repairman removes the cover, and then the filter.
  2. The air collector is released after unscrewing the mountings of the air filter. Now the user gets access to the accelerator and rods. The accelerator lever is removed immediately, as the shutter is lowered by pressing the finger down.
  3. From the seat, the carburetor moves back after the suction lever is removed and closed. Then the wire is removed and stretched out to stop the engine. A plastic lever is being shot, which is the place where the wire is attached.
  4. He is raised on the left. As a result, the carburetor is released, which makes it possible to pull it out and clean it. For these purposes, the use of a compressor is convenient. In his absence, the parts are washed in clean gasoline.

Stihl chainsaw disassembly. video

The saw carburetor assembly process is carried out in reverse order. If after this process there is the appearance of smoke from the muffler and the saw engine starts poorly, you need to make sure that there is a spring located under the lever needle.

A spring shuts off the fuel supply. In its absence, spontaneous "overflow" of fuel into the candle occurs. It is important to ensure that the spring is installed in its place, and make sure that the candle is working.

If the candle is poured with gasoline, then it should be dried. To do this, the part is twisted, merged, the excess fuel that has got inside, through the existing hole. The candle dries for more than half an hour. Then it is put into place, and the chainsaw is brought into working condition.

Insufficient contact between the high-voltage wire and the end of the plug can also be one of the causes of tool breakage. Stihl chainsaw parts can be repaired by replacing problematic parts.

For example, when a candle fails, it is replaced by a reliable one. Chains, sprocket, tires are subject to rapid wear. They solve anti-vibration tasks in the device of the chainsaw, so their replacement is carried out urgently. Such parts are recommended to be kept in stock.

Particular attention to the oil pump

The oil supply can be interrupted for various reasons. The most common malfunction of the oil pump. You can verify this by the condition of the chain lubrication.

If the oil supply to the circuit is interrupted, it becomes dry or excessively wet. these are signs of poor performance of the oil pump.

To eliminate the problem, the oil hose is inspected. The connection between the hose and the oil pump and tank is examined for leaks.

Serving a chainsaw oil pump. video

Problems arise such as the result of mechanical damage to parts of the oil system. To get to the problem area, this unit is disassembled.

If the repairman is convinced that the hose is damaged, replace it. However, depending on the degree of damage, it is possible to seal with special compounds.

Before sealing begins, the surface is washed and degreased. By repairing stihl ms 180 on its own, the consumer has the opportunity to radically save.

Identify problems in starting up the unit

There may be a problem in which the Stihl 180 does not start. It is usually associated with a broken starter. Actually, the unit does not start after tensioning the cord.

The reasons for the failure to start the starter can be:

  1. Failure of the spring.
  2. Cracked or broken pulley.
  3. A rush of rope to run.

Before you find out the cause of the breakdown, and begin repairing the starter of the chainsaw, the chainsaw body is removed. To do this, unscrew the screws that hold the cover with the starter.

In this case, screwdrivers or a special tool are used. A visual inspection of the starter reveals the reasons why the tool did not start.

Damage to the pulley with cracks and tears is reflected in the performance of the tool. Detection of mechanical malfunctions or defects at the attachment point of the soft spring.

The attachment point, as well as the tip of the spring inserted into it, is vulnerable. If faults or damage to individual parts of the starter are detected, they are replaced with new ones.

Dismantling and maintenance of the piston system of the Stihl 180 chainsaw. video

The unit can be repaired qualitatively with full compliance of the details with the brand of the chainsaw. The same spare parts replacement scheme also applies to saws during DIY repair.

Do-it-yourself Stihl 180 chainsaw repair. video

The Stihl 180 chainsaw is a universal garden tool that is widely used on a personal plot. So, it is used for cutting firewood, pruning trees and other green spaces.

The Stihl 180 chainsaw enjoys no less popularity both in construction and in farming. It is very convenient and easy to operate. It also has a low cost, which makes it more affordable for the population.

Unfortunately, no matter how high-quality the instrument is, it breaks sooner or later. The cause of this may be wear or damage to parts as a result of frequent use.

Some malfunctions can be fixed at home. But, in order to repair the chainsaw with your own hands, you need to know the structure of the tool, as well as the most frequent breakdowns and how to fix them.

Oil Supply Repair

Stihl 180 chainsaws often damage the oil system. Such a malfunction can be determined by the dryness of the working circuit or the presence of leakage.

The solution to this problem must begin with a thorough inspection of the hose through which oil is supplied. Also inspected by the connection of the hose with fittings.

During inspection and repair of the oil system, the filter must also be cleaned. Often its pollution leads to poor oil passage.

If there is an oil leak, this means that the system is leaky. This primarily concerns the hose and oil channels. Most often, such malfunctions occur as a result of mechanical damage to system elements.

The process of removing and cleaning the air filter

If as a result of the inspection a violation of the integrity of the hose was determined, then it is replaced. If the damage is minor, then they can be hidden with sealant. This radical way will reduce the cost of repairs.

Carburetor Troubleshooting

If, as a result of pressure on the gas, the chainsaw starts to stall, then the problem is in the carburetor. Also, a prolonged start of the chainsaw and the inability to set speed may become a symptom of a carburetor malfunction.

Most often, such a malfunction occurs as a result of wear of the rubber cuff, which is placed on the piston of the fuel accelerator. As a result of this, when starting the tool, air leaks. Basically, such a breakdown occurs after several years of operation of the chainsaw.

The elimination of this malfunction is carried out in the following sequence:

  1. Remove the carburetor. Remove the screw that holds the membrane cover. Turn the carburetor so that the pin is visible. From it it is necessary to remove a lock ring and to disconnect an air damper spring. After that throttle. To do this, unscrew the screw that holds it. The next step is to remove the valve axis.
  2. Pull out accelerator with spring. It has a cuff on it. Depreciation of this particular element leads to air leakage and engine shutdown after a recent start. Piston with cuff needs to be replaced.
  3. Reassemble the carburetor in the reverse order and install on the chainsaw.

Carburetor Dismantling

Now it is known how to eliminate a common carburetor malfunction. Observing all the rules, you can easily do these jobs with your own hands.

The following article describes how to repair the Partner 350 chainsaw.

Ignition System Check

Chainsaw ignition system

If the tool does not start, then the problem may be hidden in the trigger or in the ignition system. In the event that the starting device is working properly, it is necessary to carefully inspect the candle. It needs to be unscrewed and carefully inspected.

Particular attention should be paid to electrodes on which plaque can accumulate. If there is a red-brown coating on the electrodes, this indicates serious malfunctions of the entire starting system. So, the cause of the malfunction may lie in the carburetor.

If the ignition system works fine, but the tool does not work properly, then the problem may be associated with an excess of air-fuel mixture. Here you need to adjust the carburetor and clean the jets.

DIY chainsaw carburetor adjustment

If during the inspection a deposit was found on a candle, this means that the tool works on low-quality gasoline. Also, the cause may be a malfunctioning carburetor.

To solve this problem, you need to perform the following steps:

  • remove the carburetor and check it;
  • if necessary, clean and adjust it;
  • replace fuel;
  • install the carburetor and check the tool in operation.

It is worth noting that the carburetor is a rather complex unit. Therefore, if there is a need for its repair, it is better to turn to specialists for help.

And in this article you can learn how to make a manual garden drill.

With this information, you can repair a Stihl 180 chainsaw at home. Of course, you need to consider that more serious malfunctions are best eliminated in service centers.

See overview video About the Stihl MS180 chainsaw lubrication system diagnosis:

No oil enters the chainsaw chain: causes and solutions

When moving the chainsaw chains in the groove of the tire due to friction, a large amount of heat is released. If oil does not enter the chain of the chainsaw, it is necessary to stop operation and take all measures to eliminate the malfunction of the lubrication system. The combination of high loads and overheating of the headset is accompanied by its accelerated wear and premature failure.

  • Without exception, all chainsaws and their electrical counterparts are equipped with the systems of the same type by the principle of operation, through which the lubrication of the tire, the saw chain and its drive parts is realized.
  • The standard composition of this device includes a tank from which the chain oil is supplied to the pump inlet with a fixed or adjustable capacity.
  • Next, the working fluid in a metered amount enters the groove of the tire, in which the shanks of the saw chain are evenly distributed over the entire headset and the working surface of the crown of the drive sprocket.

Tires for product sets from 400 mm in length are equipped with a driven sprocket. Periodic lubrication of the bearing is carried out individually, after 6-8 hours of operation.

Symptoms of a lubricant system malfunction

The correct choice of consumable lubricant and the excellent operation of the system contribute to complete lubrication, efficient cooling of the saw equipment and the full development of its resource.

There are several external signs that the chain on the chainsaw is not lubricated. First of all, it is:

  • constant oil level in the tank;
  • increased engine load;
  • accelerated wear of the cutting edges of the saw links;
  • characteristic smell of overheated wood.

In the simplest version, the cause of oil starvation may be clogged with sawdust oil channels. This disadvantage is typical for budget headsets that do not have convenient access to problem areas.

Reasons for decreasing system performance and efficiency

In the right amount, oil is not supplied to the chainsaw chain for several reasons. Of the most characteristic failures, we can name:

  • clogging of the filter located in the oil tank;
  • mechanical failure of one of the elements of the worm pump drive;
  • in winter, the performance of the discharge device is reduced due to filling the system with too thick oil.

In the latter case, the drive and all pump parts operate at increased loads, initiating serious mechanical damage.

Advantages of premium class oil pumps

The maintainability of collapsible pumps is sufficient to restore the operability of the unit at home.

The gears of the drive of the pumps of budget chainsaws are mostly polymer. Advanced in terms of technical equipment branded models with adjustable performance are equipped with drive mechanisms made of non-ferrous metals. The cost of such systems is offset by an economical, up to 50%, flow of working fluid.

Self-help troubleshooting feature

A full-fledged independent repair of the chainsaw chain lubricant, all conditions being equal, requires knowledge of the interaction of all elements of the system, the availability of tools and locksmith skills.

The restoration of the operating parameters of many chainsaws provides for partial or complete dismantling of the component equipment. To perform complex repair work it is better to use the capabilities and technical potential of service workshops.

Parts with torn threads and damaged splined joints, as well as non-separable structures that complete the lubrication system of the popular Stihl 180 chainsaws and other similar models, must be replaced.

If, when the tank is filled, oil does not enter the headset design, the reason should be sought in the pump itself. Dismantling and disassembling the mechanism will help to identify defective parts and eliminate the malfunction by replacing them.

Checking the system for oil output and performance

Oil filter contamination results in a significant decrease in pump performance. Checking this option is easy. To do this, you need to hold the headset of the working revolving saw over a clean sheet of paper.

By the density and size of the oil strip, you can confidently judge the condition of the system and the complexity of the upcoming repair.

When asked why the repaired lubrication system works, but the right amount of oil does not go to the chain, there is no definite answer. The cause of failure may be errors made during assembly, malfunctioning of standard adjustments, inconsistency of the density and viscosity of the selected composition with the declared characteristics.

Headset oil starvation is possible when installing on a household saw with an unregulated pump a longer production tire, which is equipped with professional-grade chainsaw equipment.

The specifics of repairing Chinese chainsaws

A significant share of the imported chainsaw range is made up of Chinese-made chainsaw equipment. Many models with more or less success are copied from the best European developments.

The main advantage of Chinese products of the budget segment is a high level of interchangeability of spare parts, components and systems. For the repair of Chinese chainsaws, in some cases, you can use accessories from models of other manufacturers identical in power and purpose.