Repair Partner 350 (351): Oil is not supplied to the chain. Photo report

Features of the lubrication system and choice of oil

Fuel tanks are selected exactly according to volume. At maximum output, it is permissible to select components with a small amount of oil.

Chainsaw fuel system: 1 – fuel filter, 2 – carburetor, 3 – manual pre-priming pump.

If the carburetor is adjusted correctly, fuel will be consumed in the permissible amount. Otherwise, it will end too quickly.

A slow decrease in fuel while the saw is in use is normal. If it is missing, the chain is not lubricated correctly, so working with the chainsaw must be smooth. It is necessary not only to be able to fix breakdowns, but also to identify them yourself.

You can change the fuel supply manually. The correct operation of the lubrication system is determined by holding the tire up. If oil splashes appear, then everything is set up correctly.

It is advisable to make cuts with a significant amount of lubricant. If you have to work with soft wood, a small amount of fuel is supplied.

The chain should always be well lubricated. This will avoid smoke and further failure of the entire chainsaw. If oil leaks or does not flow at all, it is necessary to identify the cause of the breakdown. It is not recommended to operate the tool until repaired.

When choosing fuel, you need to do it correctly. The desire to save money leads to the fact that the chain quickly fails. To avoid unpleasant consequences, it is not advisable to choose oil produced in China. Preference should be given to original companies. In their price category they are much higher, but their quality is also better.

Signs of a malfunction of the lubrication system, checking its performance

• chain is dry and has a pale tint without shine.
• The chain stretches relatively quickly.
• The tire is very hot and may even partially melt the paint.
• The oil from the tank is practically not reduced.
• Reduced cutting efficiency on a sharp chain

All these signs indicate that the lubrication process is not proceeding properly. In order to check the oil supply to the lubrication system, you need to remove the side tire of the chainsaw and start it. Next, you need to slightly increase the speed while observing the end of the oil line. If oil comes in, most likely the amount is not enough for normal lubrication and you need to clean or replace the filter and, if possible, adjust the flow. If it does not, the problem is more serious and requires further diagnosis.

There is a way to check the oil supply without removing the tires. To do this, you need to point the end of the bar towards, for example, a freshly cut piece of wood from the side of the cut and increase the speed as much as possible, while trying to keep the end of the bar at a distance of no more than 10 cm from the block. If oil spots begin to appear on its surface, it means the oil is being supplied.

Engine malfunctions

• the engine does not start;
• starts but stalls;
• works unstably;
• does not develop power, i.e. It runs fine at idle, but stalls under load.

When repairing a chainsaw with your own hands, you need to act by elimination - inspect alternately all the possible causes of a malfunction, starting with those that take the least time to check and eliminate (see here for information on the design and operation of a two-stroke engine).

Ignition system

. Almost all types of engine problems listed above can be caused by ignition system failures. Therefore, when they occur, it makes sense to start troubleshooting with a spark plug. This is all the more justified since the state of the latter can provide useful information about the operation of the fuel system. So, if a problem occurs, you need to unscrew the spark plug and inspect it.

The wire is disconnected and the spark plug is unscrewed with a special wrench.

If the spark plug is dry, this means that the problem is most likely not in the ignition system, but in the fuel mixture not entering the cylinder. You can wrap the spark plug back and get to work on the fuel system. The price of a Partner 350 chainsaw is from 5 to 9 thousand rubles, depending on whether the chain is not lubricated. If the spark plug is heavily splashed with fuel mixture, it means there is an excess of it. This may occur due to carburetor misadjustment or violation of starting rules. The spark plug is wiped and dried, the cylinder is dried by turning off the fuel supply and operating the starter to ventilate the combustion chamber and remove excess fuel. Then install the spark plug in place and repeat the start.

The presence of a large amount of black carbon also indicates a malfunction in the fuel system.

The ratio between oil and gasoline in the mixture may be incorrect, the carburetor may not be adjusted, or low-quality oil may be used. The spark plug is washed in gasoline, cleaned of carbon deposits with a needle or awl, the electrodes are cleaned with fine sandpaper and replaced.

In all these cases, it would be a good idea to check the gap between the spark plug electrodes. Depending on its brand, it should be in the range of 0.5-0.65 mm. You also need to check the spark plug seal. If it is worn out or damaged, the tightness of the combustion chamber may not be ensured, which leads to a decrease in compression in the cylinder and problems in engine operation.

Even if, when checking the spark plug, there is good reason to believe that the fault is in the fuel system, you need to check the spark plug for the presence of a spark. At least to be sure that everything is in order. Message title: The makita uc3530a saw chain from Makita does not lubricate [email protected] To do this:

• put the ignition cable on the spark plug;
• using pliers with insulated handles, apply the thread or nut of the spark plug to the cylinder;
• pull the starter handle and see whether there is a spark or not.

If there is no spark, you just need to replace the spark plug. If the new spark plug does not have a spark, you need to check the condition of the high-voltage wire for a break and contact with the spark plug.

Source: auramm.ru

Checking the system for oil output and performance

A dirty oil filter results in a significant reduction in pump performance. It is easy to check this parameter. To do this, you need to hold the headset of the saw running at working speed over a clean sheet of paper.

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

To the question why the repaired lubrication system works, but the chain does not receive oil in the required quantity, there is no definite answer. The reason for the failure may be errors made during assembly, failure of standard adjustments, or a discrepancy between the density and viscosity of the selected composition and the declared characteristics.

Oil starvation of the headset is possible when installing a longer productive bar on a household saw with a non-regulated pump, which is included with professional-class chainsaw equipment.

The design of a chainsaw carburetor and the features of its functioning

If the ignition system is responsible for igniting the combustible mixture, then the carburetor is needed in order to prepare this mixture burned in the cylinder

In terms of importance, the chainsaw carburetor ranks second after the internal combustion engine. The complexity of the mechanism in question is that it consists of many small elements, so very often, instead of diagnosing, cleaning and replacing parts, many people prefer to purchase a new carburetor

Repairing and cleaning the carburetor is discussed in detail in this material (link).

Chainsaws use membrane-type carburetors. They are called membrane ones, since they not only mix fuel with air and supply it to the combustion chamber, but also independently pump the gasoline-oil mixture from the gas tank. The membrane, which is a pump, is responsible for performing this process.

The principle of operation of the carburetor and its design are described in detail in this material. The carburetor design has adjusting screws, which allows you to independently adjust the mixture composition. These are three screws that can be used to adjust the mixture at idle, as well as at low and high speeds.

Carburetors of old chainsaws produced by companies such as Druzhba, Ural and others differ in design and operating principle from modern ones. Their main difference is that they do not have a membrane mechanism, and the fuel in them is supplied by gravity from a gas tank, located mainly in the upper part of the gas tool. The use of such carburetors ensured that the chainsaw was only used in a straight position and should not be tilted. For horizontal and vertical sawing with Druzhba and Ural chainsaws, it is necessary to change the position of the tire.

This is interesting!
Special companies are engaged in the production of membrane carburetors for chainsaws. The most famous manufacturers of carburetors for chainsaws, lawn mowers and other gasoline-powered tools are Zama, Walbro. Externally, these mechanisms may differ, but their operating principle is the same.

STIHL chainsaw: problems and causes

The STIHL chainsaw is a device from one of the famous German developers, the STIHL company, which guarantees quality, ergonomics, maneuverability and operator convenience in working with the tool, as well as excellent performance, despite its compact size. The range of technical capabilities of the STIHL chainsaw allows you to solve problems at both professional and household levels. Saws of this brand have more than enough advantages, but, like all complex equipment, there are some disadvantages.

Main brands of motor oils for chainsaws

The leaders in the production of high-quality lubricants for chainsaws and brush cutters are the companies Shtil and Husqvarna. Their range includes both conventional mineral lubricants for two-stroke engines and synthetic oils for severe operating conditions. Let's take a closer look at the range.

STIHL HP

STIHL HP mineral lubricant was specially developed by STIHL engineers for use in their tools. That is why owners of Shtil chainsaws and lawn mowers are recommended to use this type of oil.

Its color is red, shelf life in a closed container is no more than four years. It is packaged in several types of containers, so you can choose the most convenient packaging for yourself. Not so long ago, convenient containers of 20 grams appeared, which are diluted with one liter of gasoline. For those who rarely use a chainsaw, this is the best option. Can be diluted and used immediately.

STIHL HP fully complies with high European standards.

HP Ultra

Another oil from Stihl. It has a synthetic base, due to which it has improved combustion characteristics, cleanliness and engine protection.

Recommended by the manufacturer for long-term use in harsh conditions. Ideal for working at low temperatures. HP Ultra does not harm the environment, since oil spilled on the ground decomposes by 80% in just 21 days.

Packaged in two types of containers, 100 ml and liter bottles. The proportion of the finished fuel mixture is 1:50, which means a 100 mm bottle is enough to prepare 5 liters of the mixture. Green color. Shelf life 4 years.

The cost of this oil is significantly higher than the cost of STIHL HP, so it is not profitable to use it constantly.

It is worth noting that Stihl oils, before going on sale, go through the company’s laboratory, where they are tested to ensure they meet all requirements.

When developing oils, much attention is paid to fuel combustion, cold start characteristics, biodegradability, and viscosity change at different temperatures (information from the company’s official website)

Husqvarna HP 2-stroke

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

According to the manufacturer, this type of oil has additives that compensate for the low quality of fuel, which is important for our country. The declared octane number of gasoline at gas stations rarely corresponds to the real one.

Husqvarna HP – semi-synthetic, green. Packaged in liter or ten liter containers. The proportion of the mixture is 1: 50, i.e. 20 grams per liter. During the period of running in the saw engine or when working in cold weather, it is possible to increase the proportion to 1:40, which will give the engine greater protection and increase its service life.

Today, there are a large number of lubricants for two-stroke engines on the market from different manufacturers. For this reason, answering the question of which chainsaw oil is best is quite difficult. Our opinion is that you should trust reliable companies, which are Shtil, Husqvarna, Oregon, Champion. It is their oils that will maximize the protection of your tool’s engine and extend its service life.

Unscrupulous manufacturers often disguise their products under well-known brands (Husqvarna, Shtil, etc.). Such oils are of low quality and can harm the engine. In order not to be deceived, it is necessary to purchase lubricants from official representatives who have the necessary certificates for the products. You can learn how to distinguish a fake from an original from the video:

Specifics of repairing Chinese chainsaws

A significant share of the imported chainsaw range is made up of Chinese-made chainsaw equipment. Many models have been copied with greater or less success from the best European designs.

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

Advantages

First of all, this is a large reserve of engine power and torque, which allows you to use the chainsaw when performing labor-intensive and complex work as a semi-professional tool.

The model, universal in its capabilities, successfully combines high performance with moderate cost, economical consumption of fuel and lubricants and consumables. The design of the tool contains great potential for reliability and durability, stability of performance characteristics throughout the entire intended service life.

Comfort of work is increased by the use of the SmartStart soft start system, effective operation of the vibration damper, precise balancing and comfortable grip, minimally low background noise level, which is within 98.5 dB.

STIHL chainsaw stalls - does not develop speed

All systems of the STIHL chainsaw function harmoniously with each other, ensuring that the mechanism starts. But sometimes, when idling confidently, the saw does not pick up speed under load, and interruptions begin in the motor. This means that there may be serious reasons requiring repair: unbalance of carburetor screws, end of engine life, breakdown of a spark plug or ignition coil, wear of the piston group.

Oil is not supplied to the chainsaw chain Cleaning and repairing the lubrication system

But, most often, the engine does not develop speed, and may even stall, if the check valve on the tank lid fails, in which a vacuum is created, which is the cause of the problem. Repairing the valve is quite labor-intensive, so it is better and faster to replace the oil tank cap; its cost is quite affordable.

What are the possible breakdowns?

Chainsaw malfunctions can be divided into groups:

• Engine problems (ignition, exhaust system and cylinder-piston system, fuel supply).
• Components such as the clutch, chain brake, lubrication system or tire are faulty.

Chainsaw motor failure is more common than others. It takes most of the time to find and restore it. As a rule, this comes down to such manifestations when the engine runs unstably or stops completely, the engine does not start and does not develop power.

Before you start repairing your chainsaw, first check all the possible causes of problems with its operation, or even better, watch a video. Fortunately, today you can find any interesting material on the Internet.

Then you need to prepare the necessary tools to recover from failures:

• device diagram (must be included in delivery);
• keys, including spark plugs.

Source: xl-info.ru

Reasons for stopping the oil supply in a chainsaw

A brief overview of why oil in a chainsaw stopped supplying the tire from the tank. Support our channel in any way you can.

Chainsaw fuel system: 1 – fuel filter, 2 – carburetor, 3 – manual pre-priming pump.

If the carburetor is adjusted correctly, fuel will be consumed in the permissible amount. Otherwise, it will end too quickly.

A slow decrease in fuel while the saw is in use is normal. If it is missing, the chain is not lubricated correctly, so working with the chainsaw must be smooth. It is necessary not only to be able to fix breakdowns, but also to identify them yourself.

You can change the fuel supply manually. The correct operation of the lubrication system is determined by holding the tire up. If oil splashes appear, then everything is set up correctly.

Features of use

Features of using the Husqvarna chainsaw:

• carefully read the operating instructions for the chainsaw;
• Perform switching on and off, idling, refueling and other technical procedures only according to the instructions;
• do not install third-party equipment on a Husqvarna chainsaw - use original spare parts and components;
• to avoid kickback from the chainsaw, do not cut several logs at once, do not turn the saw sideways while finishing the cut;
• the moving chain of the Husqvarna chainsaw should not come into contact with the end part of the guide bar with foreign objects;
• Stand slightly to the left of the saw, and not directly behind the cutting part and body - this will reduce the likelihood of kickback and dangerous situations.

Rules for safe handling of a Husqvarna chainsaw:

• When transporting or carrying a Husqvarna chainsaw, remove the wire from the spark plug to avoid contact and uncontrolled activation of the tool;
• Only the owner or an adult who is familiar with the rules for the safe operation of the device is allowed to work with a chainsaw;
• any actions with the Husqvarna chainsaw should be performed in protective equipment, especially your hands should be protected - use the shield included in the kit;
• It is also necessary to wear special gloves on your hands for handling chain saws;
• The operator's feet must be wearing tight, closed-toed shoes and protective shields;
• The operator’s face also needs to be protected from exposure to sawdust and uncontrolled kickback of the chainsaw - wear a protective mask and tight-fitting clothing, protect your ears with sound-cancelling headphones;
• hold the Husqvarna chainsaw with both hands; it is forbidden to hold a running saw with one hand;
• Carry out timely maintenance, repairs, inspect the saw for damage and malfunctions, and replace worn components;
• check the condition of the fastenings of the Husqvarna chainsaw before each work; if the fastening is loose, secure it and only then start working;
• You should handle not only the device, but also the fuel carefully - do not smoke near the saw or the refueling or fuel mixing area.

Poor oil flow to the chainsaw chain

Each chainsaw, regardless of its model, brand, or class, has approximately the same structure. It consists of several important components, including the lubrication system. Without the latter, the operation of the power unit is impossible. Due to the functioning of the forced lubrication system, the tool chain reduces the risk of severe wear, which is guaranteed in conditions of constant friction of the carved element against the guide bar and inevitable heating. When the chain mechanism is lubricated, friction is softened; the chainsaw operator needs to repair this element or completely replace it much less often.

Power unit

The saw is equipped with a two-stroke air-cooled carburetor engine with a volume of 40.2 cm3 and a power of 2.6 hp. The power unit is characterized by flexible traction parameters, optimal fuel consumption, easy start, simple maintenance and a long service life.

The fuel is a mixture of gasoline and oil for two-stroke internal combustion engines, which enters the carburetor from an internal gas tank with a volume of 410 ml.

In the design features of the power unit:

• crankshaft made of forged steel;
• wear-resistant chrome coating of the cylinder liner;
• piston group with two compression rings and a working life increased to 5 years;
• simplified access to the air filter;
• reliable and durable ignition system;
• best-in-class Japanese Walbro carburetor.

Built-in primer pump ensures quick engine start regardless of ambient temperature.

Breakdowns and how to fix them

Considering the types of malfunctions of the lubrication system, we can distinguish two categories:

• general breakdowns found in all types of power units;
• individual, which depend on the type of pump, on the features of the worm-type transmission, on the design and other features of a particular chainsaw.

Important! If the lubrication system does not work, it is not recommended to use the saw. This way you will ruin not only the chain , but also the guide bar, as well as the main sprocket, which leads to the need for large investments in repairing the device.

“Symptoms” of a faulty lubrication system:

• the chain mechanism is dry, pale, no shine;
• the chain quickly stretched after installation;
• the guide bar heats up and its paint melts;
• the oil remains in the same volume in the reservoir, despite intensive use of the tool;
• chain cutting efficiency is significantly reduced.

All this indicates a malfunction of the lubrication system or its functioning intermittently.

• Remove the side tire.
• We start the instrument.
• Gradually increase the speed, observing the end of the oil line.

If consumables arrive, then the reason for the problematic operation of the lubrication unit most likely lies in a clogged filter, which can be cleaned or replaced with a new one. If possible, after this manipulation the supply of consumables is regulated.

If consumables do not arrive, then additional diagnostics need to be carried out, since, most likely, the problem is more serious.

The chainsaw DOES NOT USE OIL ON THE CHAIN!!!

Please note that it is not always necessary to remove the tire to check the operation of the lubrication system. Alternatively, the end of the bar is directed to the side (we use a block) from the direction of the cut, maximizing the speed, and holding the bar (its end) 10 centimeters from the block. When applying oil, you will see corresponding spots.

Principle of operation

The main unit of the system is the pump. The principle of its operation is as follows. As engine speed increases, a gear mounted on the main shaft drives the pump shaft through a worm gear. In turn, the rotation of the shaft creates a certain pressure in the oil line, which forces the oil to move along it towards the tire.

The end of the oil channel is located at the point of contact of the tire with the tool housing, where there is a longitudinal groove into which, when installing the tire, its oil channel falls.

The groove is necessary to ensure the supply of oil to the bar, regardless of the degree of tension of the chainsaw chain. Simply put, no matter what position the tire is in at the time of operation, oil will get onto it through the groove.

What to do if there is no oil supply?

As we have already found out, additional diagnostics need to be carried out. To do this, we disassemble the lubrication system. Please note that in some saw models this is possible by completely disassembling the tool. So, just in case, arm yourself with the appropriate repair tools. If you do not have experience in disassembling a saw, entrust this task to a professional.

READ Connecting a vacuum cleaner to a circular saw

When the lubrication system is disassembled, you will be able to detect one of the following breakdowns:

• the oil hose is torn (sometimes visible to the naked eye upon preliminary examination of this part of the assembly), which needs to be replaced;
• there is no thread on the shaft where the oil pump is located (needs to be attached, replaced);
• damaged thread of the pump main gear (a new one is installed);
• there is no main shaft corkscrew (this problem is often observed with Homelite brand chainsaws), which can be solved by installing a nail in place of the original corkscrew (ideal in size, if there is a need to trim it);
• a clogged line, this can be solved by blowing out (mechanically or using compressed air, sometimes a wire helps);
• The filter element is clogged (clean or replace).

Please note that for some STIHL power units (for example, the MS 180 model) the pump cannot be disassembled, but it will periodically become clogged. In this case, it is washed with gasoline or, if necessary, completely replaced.

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

Another common problem, again typical for STIHL brand products, is depressurization of the line. You need to look for the problem at the point where the oil line that comes from the reservoir enters the equipment body. Such a breakdown is indicated by oil leaks at the bottom of the power unit. In order to correct the situation, the handle is dismantled, the hose is removed, cleaned and degreased, then the seat is treated with sealant and the hose is reinstalled. After this, the lubrication system should start working normally.

Why doesn't oil to the chainsaw chain?

If during operation the chainsaw chain oil In fact, there may be many reasons influencing this common rumor process. You should disassemble the chainsaw and identify the main problem. The probable prerequisites for this process will be described below.

There are several reasons for the lack of oil supply to the chain while the chainsaw is running, and you also need to disassemble the chainsaw to identify them.

Lubrication system design

The chainsaw chain lubrication system, depending on the tool manufacturer, may differ slightly in design features and parts used to create this unit. In this case, the features do not affect the connection diagram of the system, as well as the total number of parts used.

• an oil reservoir located in the engine crankcase;
• tank filter (element located directly in the tank);
• an oil line that looks like a small-diameter hose made of high-quality rubber;
• the pump itself can be considered the heart of this unit;
• a worm gear (worm-type gears) that supplies force from the engine to the heart of the assembly.

In some works by power unit repair specialists, the guide bar is described not just as a saw set, but as one of the components of the lubrication system. Why is that? This can be explained by the presence of special holes in this tire through which oil . By the way, the chain itself can be considered a participant in the transportation of lubricating consumables, since this mechanism also has parts related to oil distribution.

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.

Possible reasons for fuel failure

Oil may not flow the chain only if there are two breakdowns. These include:

• problems with air leaks;
• failure of the oil pump drive.

The main cause of failure is air leaks. This can happen due to depressurization of the oil hose while using the chainsaw. In this case, it is necessary to remove the hose from the hole. This must be done in the place where it is connected to the crankcase. Then the hose is seated on the sealant and installed in its usual position. If this doesn't help, there's likely been a loss of elasticity. For further operation of the chainsaw, it is advisable to replace the hose.

The second reason is a breakdown of the oil pump drive. In common parlance this part is called a worm. When the drive fails, oil will stop flowing to the chain . The oil pump drive is a round plastic ring with grooves inside. Constant use of a chainsaw leads to wear of the internal parts, resulting in the metal hook located inside the drive being chipped. After this breakdown, oil stops flowing to the chain.

How to increase the life of a chainsaw

You need to have a couple of tires and at least four chains in reserve. To ensure a uniform wear process, the chain should be turned 180° after three hours of operation, and after the same period of time the chain should be replaced with another one.

Timely cleaning of the tool ensures that various holes are not clogged, which can lead to difficulty or even interruption of the supply of the fuel mixture, which will affect the operating condition of the chainsaw.

If you are not confident in your abilities and are afraid of ruining the unit, then it is better to turn to professionals. Due to their experience, they will always be able to correctly diagnose the problem and efficiently correct problems in your chainsaw.

Signs of a malfunctioning lubrication system

The correct choice of consumable lubricant and flawless operation of the system contribute to complete lubrication, effective cooling of sawing equipment and the complete exhaustion of its service life.

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

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

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

How to install a chain

A long service life of the device is possible not only if the components for it are carefully selected, but the installation of the chain on the chainsaw must also be correct. In addition, sooner or later the chain may need to be replaced. In this case, it is necessary to think about safety, in particular, carry out work using special protective gloves. To “dress” the saw, you need to perform actions in the following sequence:

1. Prepare the surface for work. You can place the chain correctly on a table or other convenient and flat surface. Additionally, the surface can be covered with a rug.
2. The wing nut on the housing must be unscrewed, and then the sprocket cover must be removed.
3. The latter must be turned to the right all the way. After this, gradually put the chain on top of the bar, while it is better to start work from its top. At each stage, it is recommended to ensure that the chain is directed correctly.
4. Turn the chain so that the bar is on top of it. At this stage, the cutter located on the top of the tire should be facing forward, not to the side. This indicates that the direction of movement is correct and the location is accurate.
5. Place the tire on the sprocket.
6. After this, put the chain sprocket cover on the engine block, turn the wing nut until it stops, but do not completely tighten the sprocket cover.
7. Unscrew the clamping screw by turning it towards the top of the bar, while the chain links should fall into the corresponding recesses.
8. Tighten the wing nut until secure.
9. Check the part for sagging and tightness, and if necessary, tighten it further or loosen it.

Main problems with oil supply

When operating a chainsaw, two types of problems with the supply of lubrication to the chain can be observed:

Oil is not supplied to the chainsaw chain Cleaning and repairing the lubrication system

• Insufficient oil flow, which can be caused by various reasons. If measures are not taken in time, the quality of work will noticeably deteriorate, and the chain itself may become completely unusable.
• Excessive amount of oil. In this case, after prolonged use, puddles of grease may accumulate under the saw. This not only affects oil consumption, which will have to be constantly added, but also negatively affects the environment.

READ How to properly sharpen a circular saw

Both of these problems need to be addressed as soon as possible after they are discovered. This will extend the life of the saw and reduce lubricant consumption.

Chainsaw characteristics

This model is in great demand among consumers, but most often it is bought by gardeners to work on their plots. Use the saw not only for preparing firewood, but also for construction.

In general, they are compact in size. They are equipped with a fairly powerful engine. Their main advantages are: easy starting and reliable operation , made possible thanks to a high-quality electronic ignition system and fuel pump.

It is completely safe to use this chain saw. It has a built-in safety system that automatically applies the inertia brake to the chain. In the same mode it is also lubricated.

The Partner will have no problems starting the chainsaw even in winter, since it has a fuel primer . The starter drum is equipped with an impeller for cleaning dirt. In addition, the manufacturers included the device in the CCS system. This design traps residual particles and is also used when the air filter is used for a long time.

The developers, in order to extend the service life of the chain saw on the piston group cylinder, made chrome-plated walls . This model also has an ergonomic handle and an anti-vibration system .

Why does the chain fly off and break?

If the chain falls off the chainsaw or it breaks, this means that there is some kind of problem with the device; under normal conditions it should not do this. There are three reasons why a chain falls off:

• Tire problems. They lead to loosening of the tension, which can lead to the chain breaking. Most often, this problem occurs in the groove between the outer plate on the chain set housing and the inner plate on the motor housing. The casing with the tire is secured with a bolt, which can become loose during operation of the chainsaw, as a result of which the tire begins to move or vibrate. To solve this problem, you need to find and lower the chain brake, for which you need to turn the tension screw, which is located next to the tire, until it is fully tensioned.
• The chain has stretched. Sagging may indicate a malfunction of the chainsaw mechanism. During operation, the metal is deformed, which means it can become 0.5-1 cm longer. In this case, it is recommended to replace or shorten the chain.
• The drive sprocket is poorly secured. To secure it, you need to remove the engine protective cover and spark plugs, and then pull out the air filter. The spark plug itself also needs to be unscrewed, after which a special stopper is installed in its place to secure the piston. Turn the fastening disk clockwise until the piston stops in the uppermost position. A thick rope folded several times can act as a stopper. After fixing the piston, clamp the drive sprocket. Reassemble the chainsaw, installing all parts in the reverse order.

Most problems can be solved by repair. Only in exceptional cases will it be necessary to change it.

Assembly Partner 350

In order to correctly assemble Partner 350, it is necessary to install all elements in the reverse order of removal.

If this is your first time repairing a Partner 350 chainsaw, then when disassembling, place the parts in the order in which they were removed. This will prevent you from getting confused and forgetting to install any node.

An important feature of the Partner 350 chainsaw engine assembly is that the crankcase cover is installed without a gasket. Instead, a red sealant is used, which is applied in a thin layer to the crankcase installation site. Before applying the sealant, it is necessary to degrease the crankcase cover and its installation location for better adhesion of the sealant.

Setting the flywheel and coil clearance (ignition adjustment)

During the assembly process of the Partner 350 chainsaw, if not only the flywheel, but also the ignition coil was removed, a gap must be set between them. To do this, first install the flywheel, then place a piece of a one and a half liter plastic bottle on it, and then place the coil and fix it with two fastening screws, while the flywheel must be turned toward the coil with magnetic contacts.

After adjusting the clearance, rotate the flywheel. If it does not touch the coil contacts, then the gap is set correctly.

Train tips

It’s not enough to know how to solve problems with a broken or broken chain, because there is always the opportunity to prevent this. Proper care of your saw will help extend the life of the device and its parts. Therefore, it is recommended to follow the advice of experts:

• Clean the air filter regularly and lubricate it with oil. The filter needs to be changed periodically.
• Each time before starting work, you need to check that all nuts and bolts are securely tightened. Then there will be no failures in the device during operation.
• Both the bearings and the sprocket need to be lubricated.
• Clean burnt candles regularly.
• Lubricate, sharpen and tension the chain in a timely manner.

The oil on the chainsaw does not flow to the chain

A high-quality chainsaw, provided proper care and timely repairs, can last longer than the warranty period.

When the saw chain of a chainsaw moves in the groove of the bar due to friction, a large amount of heat is released. If oil does not flow to chain , it is necessary to stop work and take all measures to eliminate the malfunction of the lubrication system. The combination of heavy loads and overheating of the headset is accompanied by its accelerated wear and early failure.

• Without exception, all chainsaws and their electric analogues are equipped with systems of the same operating principle, through which the lubrication of the bar, saw chain and its drive parts is carried out.
• The standard composition of this device includes a reservoir from which chain oil is supplied to the inlet of a pump with a fixed or adjustable capacity.
• Next, the working fluid in a dosed amount enters the groove of the bar, in which it is evenly distributed by the shanks of the saw chain over the entire headset and the working surface of the drive sprocket crown.

Performance tires with a length of 400 mm or more are equipped with a driven sprocket. Periodic lubrication of the bearing is carried out individually, after 6-8 hours of operation.

Video: Assembling the Husqvarna 137 Chainsaw

The weight of the chainsaw without the headset is 4.6 kg at full speed. 5.5 kg. The rugged body houses the 2.18-liter X-Torq two-stroke carbureted internal combustion engine. With. To start the Husqvarna chainsaw, an inertia starter with a spring is provided to facilitate the starting procedure. Built-in forced air supply system. Duplicating air purification increases the service life of the air filter and, accordingly, the chainsaw itself. The ignition system is contactless. Thanks to the built-in Auto Tun system, the carburetor is installed automatically. To increase safety when working with the tool, an inertial chain brake is provided, which is activated in case of play, hand protection, “Low Wib” anti-vibration protection, and a muffler.

READ Gasoline saw partner

The chain tensioning mechanism is located on the side of the Husqvarna 137 chainsaw. A special universal wrench is used to secure the bar and adjust the chain tension. For this modification of the chainsaw, H30 tires measuring 33 cm (33 cm) are used; options with tires from other manufacturers no longer than 38 cm are possible. Lubricant is supplied to the chain mechanism automatically with a moving chain.

Characteristics

Characteristics

1. A light weight
2. ICE X-Torq carburetor.
3. The power of the gasoline engine is 2.18 liters. With.
4. Carburetor Walbro WT-660.
5. Simple starting system.
6. Air injection. Additional air supply.
7. Double purification of the air entering the carburetor.
8. CD ignition system.
9. Carburetor auto tuning.
10. Anti-vibration system Low Vib.
11. Chain lube. Automatic.
12. Compact size.
13. Mobility, no connection to a power source.

User guide

Every Husqvarna chainsaw comes with an instruction manual.

The instruction introduces the owner of the equipment to the tool, teaches methods and techniques of work, and also draws attention to the correct maintenance of the gasoline unit. The operating instructions consist of the following sections:

1. The structure of the Husqvarna 137 chainsaw, step-by-step assembly of the unit, according to detailed descriptions from the instructions.
2. Safety measures during operation and maintenance.
3. Characteristics
4. Sawing techniques and methods.
5. Preparing the Husqvarna 137 chainsaw for use.
6. Starting the chainsaw.
7. Service.
8. Troubleshooting the Husqvarna 137 chainsaw.
9. Equipment.

Basic Safety Precautions

1. Wear protective clothing and protect your hands.
2. Protect your workplace.
3. Transport the chainsaw with the high-voltage cord disconnected and the fuel and oil tanks tightly closed.
4. Keep your chainsaw away from your work area.
5. Learn sawing techniques and techniques.
6. Warn about the presence of strangers in the area where sawing will be carried out.

Reasons for decreased system performance and efficiency

The required amount of oil is not supplied to the chainsaw chain for several reasons. The most common failures include:

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

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

Chain tension mechanism

One of the simplest mechanisms of a chainsaw is the chain tensioner. It consists of a pin connected to a screw. The screw is driven by a special tool - a screwdriver or hex key. Rotation of the screw helps move the pin in a special groove in the tool. Along with the moving pin, the bar moves, causing tension on the chain.

The adjusting screw on chainsaws from different manufacturers can be located in different places - on the side, bottom or at the end of the tool. The quality of chain tension must be checked regularly, since a weakened chain can come off the bar groove, which will lead to tragic consequences for the sawyer. You should also not allow the chain to be over-tightened, as it will work under load and will break at one point, which can also result in serious injury. More information about chainsaw chains and tires can be found here.

Having examined the detailed design of the chainsaw, it will not be difficult to repair it yourself. You need to understand that a chainsaw is a tool that is used not only for sawing wood. The use of different attachments allows you to significantly expand the functionality of the tool. At the same time, do not forget that even the most expensive and high-quality models of tools also break down, so they need regular diagnostics, maintenance and repair.

Feature of independent troubleshooting

A complete independent repair of chainsaw chain lubrication, all things being equal, requires knowledge of the interaction of all elements of the system, the availability of tools and plumbing skills.

Restoring the operating parameters of many chainsaws involves 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 broken threads and damaged spline joints, as well as non-separable structures that come with 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 flow into the headset structure, the reason should be sought in the pump itself. Dismantling and disassembling the mechanism will help identify faulty parts and eliminate the problem by replacing them.

Sources:

https://crast.ru/instrumenty/ploho-postupaet-maslo-na-cep-benzopily https://morflot.su/pochemu-ne-postupaet-maslo-na-cep-benzopily/

Oil pump repair and drive sprocket replacement

Repair of the oil pump on the Partner 350 chainsaw is necessary if the oil supply has completely or partially stopped. The oil pump mechanism includes the pump itself and a gear with a worm gear, which is driven by a sprocket connected to the clutch.

The most common problem with an oil pump is missing threads and splines on the gear or splines on the worm gear. The situation can be corrected by replacing the parts with new ones.

First warnings during repairs

A chainsaw consists of many parts. Let's highlight the main ones, such as:

• engine;
• fuel tank;
• ignition cable.

Since this is only a small part in a not very detailed description, it should be taken into account that chainsaws are almost identical in structure , which greatly simplifies their diagnosis and repair. Repairs can be greatly complicated if you do not contact a technician in time and continue to use the broken equipment. And it’s absolutely true that in order to repair a chainsaw, it is best to contact a specialist, because the future “life” of your “irreplaceable partner” at work depends on the repair.

So, when carrying out repairs, the master must check all the parts of the chainsaw , for which it is disassembled into parts. Most often, breakdowns occur from improper and careless operation of the device, which is why the fuel filter or breather often becomes clogged with sawdust. To diagnose a blockage, the technician disconnects the hose and checks how the fuel flows.

Fuel may also be supplied in insufficient quantities. This happens because the air filter becomes clogged, so it should be changed every three months.

One of the important elements of a chainsaw is the spark plug, which also needs to be checked. There are possible interesting reasons for the malfunction:

• dry candle;
• candle in oil;
• the candle may be shrouded in black soot.

If the spark plug is dry, it means no fuel is getting into the cylinder, and this, in turn, means that everything is fine with the ignition and the repairmen are looking for another problem. If the spark plug, on the contrary, is in oil, it means that there is excess fuel. In this case, you need to unscrew the spark plug and wipe it well , then put it back again. Black soot on the spark plug means that while using it, the owner of the chainsaw mixed gasoline and oil in the wrong proportions. Be sure to check for a spark.

As we can see, repairs are still not so simple and we still have a lot ahead of us. The process of restoring the functionality of a chainsaw also includes some processes for cleaning the elements of this device, such as the muffler. Let's analyze this operation step by step. To begin with, as in any repair, we need to find this part of our device, remove it and disassemble it. If there is a lot of carbon on it, then we need to clean it, and for this we will need:

These items can be found in any home. We clean our muffler completely of carbon deposits, after which it is important to dry it well so that the repair is not in vain and, of course, put it back in place.

Dry cleaning of the muffler is too dangerous for your health; carbon deposits contain a lot of carcinogens that can be accidentally inhaled!

The chain is an important element of this type of equipment

The chain plays a very important role in a chainsaw, because it is the one that cuts wood. It is made from special steel. Chains come in different sizes and pitches. Although the chain is made of special metal alloys, sooner or later it becomes dull. How can we understand when the chain has become dull? Most often, a chainsaw user notices that the chain has become dull at the wrong time. This leads to poor performance and shortens the life of the chainsaw. The first signs of dullness are excessive vibration. Next, you can pay attention to cutting too slowly. In fact, you can even just look at the teeth of the saw and from them you can easily determine that it is dull.

Do-it-yourself adjustment of the Partner 350 chainsaw carburetor

Before you start tuning the standard carburetor of the Partner , you need to thoroughly clean it of dust, dirt and carbon deposits that have accumulated on the walls. In addition to the carburetor, you will need to wash and dry the fuel and air filters. Otherwise, the operator will not be able to accurately set the Required Engine RPM.

READ Carburetor Tuning on the Partner 350 Saw

In the upper left part of the protective plastic body of the Partner there are holes, inside of which the manufacturer provides bolts for adjusting the carburetor. Having found them, you can begin basic configuration of the node. To do this, the left and right screws, which are responsible for the quantity and quality of revolutions, respectively, must be set to the fully tightened position. Immediately after this, they must be loosened by 1/5 of a turn. The third adjustment bolt, marked T, must be left in the position in which it is installed.

The final adjustment of the Partner 350 chainsaw carburetor is performed in the following order:

• First, you need to start the dust and let its engine run to completely warm up;
• After 5 minutes you can start adjusting. First, you need to start turning the left bolt in the direction of the clock until the engine reaches maximum speed. Then the left bolt must be returned 1.4 turns in the opposite direction. After performing THESE actions, the Partner chainsaw engine should idle confidently;
• If, after manipulating the left adjusting screw, the chain on the bar begins to rotate, then it must be stopped by alternately turning the bolt T;
• Then you need to move on to adjusting the quality of the fuel mixture. To do this, the right adjusting screw will need to be returned in the direction of the clock hand. As soon as the motor reaches the maximum permissible speed, the screw must be unscrewed 1/4 turn in the opposite direction.

When setting the maximum engine speed of the Partner 350 saw, it is better to use a tachometer pre-connected to the motor. As soon as the device shows the same speed as stated in the model’s proprietary operating instructions, it means that you must stop turning the screw.

What oils can be used

Leading manufacturers of chainsaws recommend using their own lubricants in their equipment. However, these oils often cost several times more than simpler ones from third-party manufacturers.

Please note: If you are in doubt about the choice of lubricant, then in this case, the best solution would be to purchase lubricants from the equipment manufacturer.

But what to do if for some reason it is impossible to buy expensive original oil? Here, chainsaw owners resort to different options. Let's take a general look at each of the possible lubricants for saw chains.

Original oils

Often this is the best choice in terms of performance, but not price. In addition to optimal lubricating properties, today manufacturers strive to make these lubricants biodegradable (based on rapeseed bases), which has almost no harm to the environment and human health.

Stihl chainsaw chain oil is a biodegradable product. The only significant negative is the price.

Narrow profile

Special oils for chainsaw chains from third-party manufacturers. Also a good choice. They cost significantly less than branded lubricants, but are often almost as good in performance.

Cheap industrial oil

The most common option here is the domestic product, labeled I-20 or I-20A. One of the cheapest options. This industrial oil can be poured into a chainsaw to lubricate the chain without fear of negative consequences.

The lubricant has good properties regarding the operating conditions of the saw set and can reliably protect the chain and other elements of the set from wear.

In terms of performance, it is a little inferior to the original. But the price can be several times lower than for specialized products. Therefore, this option is used by many owners of chainsaws of all brands and models.

In hot conditions, it is recommended to monitor the lubricant level during sawing after half the gas tank has been used up.

Due to its very low viscosity, industrial oil is consumed quite quickly. There are known cases where industrial lubricants were used up faster than the fuel tank ran out.

New engine or transmission lubricants

Not a very reasonable choice in economic terms. Suitable for cases where the saw is rarely used, and there is no point in buying a canister of special lubricant separately.

These oils contain a huge amount of unnecessary and useless additives for saw operation, which will only pollute the processed lumber and the environment.

Which oil is better to use for a chain - video

Here you also need to take into account viscosity indicators. The rate of oil supply to the chainsaw chain can be greatly reduced as the temperature increases the viscosity.

Greases may lose their fluidity in winter conditions and may not effectively protect the chain and tire running surfaces from wear.

In the case of motor oils, when working in winter, it is recommended to use low-viscosity options. In general, internal combustion engine lubricants can be used in saws.

Used oils

Using used oils to lubricate a chainsaw chain is the worst idea possible.

Firstly, the specific nature of the operation of a chainsaw implies the creation of an oil mist in the work area, which spreads to the surrounding nature and is partially inhaled by humans.

And the waste is a recognized carcinogen and is generally extremely toxic. Therefore, in many countries, entire industries have been created to recycle used motor and transmission oils, and unauthorized discharge into the environment is punishable by serious fines.

Secondly, the lubricating qualities of the waste are extremely low. They are tight enough for medium load conditions. If you cut a thick log or hardwood, the chain and the rest of the saw set will suffer, even to the point of irreversible destruction.

Answering the question of how to replace chain oil for a chainsaw if it is too expensive to buy the original, you can answer this way: almost any oil with a suitable viscosity. But not with detention. It is better to fill the chainsaw with products specially designed for this purpose to lubricate the chain.

How and when to pour lubricant into the reservoir? Here the answer is simple: pour gas every time you fill up to the mark on the neck.

Common Partner saw breakdowns: diagnostics at home

The Partner gasoline saw cannot be called unreliable. For many users it works without problems in winter and summer, for many years. But others complain about the same typical problems:

1. The chainsaw won't start.
2. The chainsaw starts but stalls.
3. Fuel does not enter the cylinder.

All these problems have internal causes in the parts and components of the tool. This means that in order to get to the bottom of it and fix the breakdown, you will have to disassemble the electric saw. This is not as difficult as it may seem, because manufacturers always take this possibility into account.

To independently diagnose problems at home, you need to understand that common chainsaw problems in the vast majority of cases are caused by the same reasons. Therefore, just by the symptoms, you can guess where the source of the problem is.

For example, if a chainsaw does not start, then the reason most likely lies in the ignition system, namely the spark plug. If air leaks into the cylinder, then you need to look for a defect in the fuel system. A dirty filter causes the engine to stall and smoke, and so on. Let's look at these cases in detail so that you feel confident when repairing the Partner chainsaw yourself.