Step-by-step instructions for adjusting the carburetor of a chainsaw Partner (Partner)

Problems with the operation of the chainsaw can arise due to incorrect carburetor adjustment. This procedure must be performed regularly. This will help extend the life of the tool. The Partner can adjust the chainsaw carburetor with his own hands, but it is first recommended to study the device and how to troubleshoot basic faults.

Step-by-step instructions for adjusting the carburetor of a chainsaw Partner (Partner)

Problems with the operation of the chainsaw can arise due to incorrect carburetor adjustment. This procedure must be performed regularly. This will help extend the life of the tool. The Partner can adjust the chainsaw carburetor with his own hands, but it is first recommended to study the device and how to troubleshoot basic faults.

How does a carburetor work?

Correct adjustment is only possible if the structure of the chainsaw carburetor has been studied in advance and the quality of this part has been checked. For example, for the Partner p350s tool, the carburetor manufacturer is Walbro. The indicator of quality in this case is the WT-891 marking.

Knowing this information is necessary to order spare parts.

The carburetor of the Partner 371 chainsaw or any other model has a classic structure. The main elements are:

• fuel pump;
• main chamber with membrane;
• throttle and air dampers;
• screws (adjusting quality, quantity and idle speed adjustment).

In addition to these parts, the carburetor has technological channels through which the mixture of gasoline and oil moves.

The principle of operation is as follows. An impulse is supplied from the crankcase to the fuel pump. This is where the work of the carburetor begins. After receiving the impulse, the fuel mixture is directed to the main chamber, entering there through a needle valve, which is controlled by a diaphragm. From the main chamber, the liquid is directed through the technological channels into the cylinder, and the amount of liquid can be independently adjusted using the throttle valve.

Additionally, the throughput of technological channels can be adjusted. For this purpose, it is necessary to use quality and quantity screws, which work on the principle of valves.

Reviews

For an objective assessment, we post several detailed reviews left by real owners through the comment form on our website.

The Partner 371 chainsaw was purchased for household work, mainly cutting for the firebox. We had to saw trunks over 40 cm thick, but the impressions were mixed. Half an hour later the carburetor overheated and the chain tension regulator melted. The chain began to slip off after 20 seconds of operation. Otherwise there were no problems.

Dmitriy

The petrol consumption of the Partner 371 chainsaw is low, and, contrary to expectations, the oil does not leak. There were problems with anti-vibration springs that could not withstand vibration. I replaced it, there were no problems, spare parts are freely available and the price is reasonable. After prolonged work, it does not catch on the first try; the saw periodically needs to rest. In general, it’s not bad for a household tool, if you don’t use it for wear, I recommend it.

Alexei

Basic faults

The following types of faults are typical for the Partner chainsaw:

• engine malfunctions, such as problems with ignition, fuel supply, or exhaust and piston-cylinder systems;
• failure of carburetor components, such as the clutch assembly, chain brake or lubrication system.

The causes of failures can be different, but most often it is improper operation, insufficient amount of oil or poor-quality fuel mixture.

How to remove and disassemble

Correcting malfunctions of a chainsaw carburetor is possible only after this part has been removed. And to do this you need to disassemble the chainsaw itself. This work will have to be done in the following sequence:

1. Remove all components in strict order. First the chain brake cover and saw set, then the top cover, saw handle and starter.
2. After these parts are removed, you need to clean the saw using a compressor with an attachment.
3. After this, you need to plug the inlet window, since there is a risk of dirt and foreign objects getting inside.

Cleaning

You can clean the carburetor in different ways, most often it is done with air. The sequence of work is as follows:

1. Unscrew the top bolt of the part cover.
2. Remove the valve gasket. After this, you need to blow the mesh with compressed air. In this case, you should not blow closely, but at a short distance.
3. There is no need to remove other parts of the carburetor. You can use a special liquid to clean the surface.
4. Now the carburetor needs to be assembled, attaching the parts in the reverse order.

Other renovations

For the Partner chainsaw to operate efficiently, other repairs may be required. It is not difficult to carry out repairs with your own hands.

The most common problem is the lack of:

• sparks in the spark plug (you need to either clean the gap on the spark plug, or replace the coil or flywheel with similar parts);
• fuel supply (the cause may be a clogged hose or fuel filter);
• air supply (air filter needs to be washed).

Carrying out disassembly

Related Posts

If you are setting up a Partner-350 carburetor chainsaw, you should learn more about the unit; in many models the design features are almost identical, so these recommendations will be relevant.

Elements should be removed with the utmost care and placed in order, this will help you during the assembly process. Three bolts hold the top cover in place and these need to be removed to reveal a layer of foam rubber that acts as part of the air filter. The technician will have to get rid of the fuel hose, this will remove the traction drive.

Read also: DIY clamp for sandwich panels

Adjusting a carburetor chainsaw

"Partner-350" is not possible unless you remove the cable end, this must be done in the next step. The gasoline hose, which is located to the left of the nozzle, must be reset. All of the above work will disable the carburetor, which can be adjusted. This mechanism is complex, so if you need further disassembly, you will need to carefully remove the items because their size is very small, making them easy to get lost.

How to adjust

Setting up the carburetor of a chainsaw Partner with your own hands requires preparing the following tools:

• tachometer (electronic crankshaft speed counter);
• slotted screwdriver;
• a set of filters (their replacement is part of the adjustment process).

You can adjust the carburetor on a Partner 352 or other model chainsaw only if you first clean it of dirt. For this, it is best to use a compressor with an air nozzle. The adjustment itself is performed in several stages:

1. To access the adjustment screws, you need to remove the cover. They are also accessible through special holes on the left side of the carburetor. It must be remembered that the left screw is a quality screw (marked H), and the right screw is a quantity screw (marked L).
2. After this, you need to tighten the screws completely and then loosen them ⅕ of a turn.
3. Then the chainsaw needs to be started, since the carburetor can only be adjusted when the engine is hot.
4. After this, the quantity adjustment screw must be tightened clockwise to maximum engine speed. Once this result is achieved, the screw must be unscrewed counterclockwise by ¼ turn. After this, the chainsaw should run at idle. If the revolutions are too low or too high, then use the throttle valve.
5. Now, using the quality screw, the maximum speed is set. This parameter is determined by the tachometer. The maximum possible value can be easily viewed in the instructions. For example, for a chain saw Partner 350 this value is 12500 rpm

If there is no tachometer, then you can determine the quality of the adjustment visually. If the tool smokes a lot during operation, then the quantity screw needs to be tightened a little. Another option is also possible. A chainsaw may work well at idle, but poorly at maximum speed. The situation can be corrected by tightening the quality screw, while keeping the gas fully clamped.

Tools

To adjust, you will need the following tools: tachometer, screwdrivers, and in rare cases, special keys. Let's look at their purpose, necessity of availability and cost.

The best information about adjusting carburetors on a chainsaw

Greetings to you dear and most faithful readers of my blog. In today's article, I decided to look at how to adjust the carburetor on a chainsaw. After all, it seems to me that you have more than once encountered the problem that your “darling” let you down when you needed it most. And since you and I are frugal and don’t want to spend money on something we can do ourselves, let’s learn how to adjust the carburetor on our chainsaws with our own hands, without involving professional repairmen. And as you will soon see, this is quite easy to do. You don’t even need to do anything special. I specifically examined the adjustment of carburetors of all well-known brands of saws, each of which has its own tricks and nuances, and in my opinion this is the best information on the network!

So let's get started!

What do you need?

• First, the operating instructions for the device itself.
• Secondly, the tachometer. We’ll look at why exactly we need it a little later.
• Thirdly - a screwdriver.

Oddly enough, this is all we will need.

First, carefully familiarize yourself with the structure of your saw. The first thing you need to do is determine where the carburetor jets are located, and what is even more important than the jets - the adjusting screws. Usually there should be two or three screws. One of them regulates idle speed, and the other two regulate low and high speed.

Step-by-step setup

“Partner 350” is regulated similarly to many models of chainsaws.

In this model we have three regulators:

• Low speed – L
• High – H
• Singles – T.

When released from production, these chainsaws are configured to supply more mixture than necessary. This should only happen during the first hours of operation.

When the engine warms up, it is better to reconfigure it. At idle speed, tighten screw T counterclockwise until the chain stops, then adjust each of them in order: L, H, T.

Screw L should be turned counterclockwise ¼ turn at the moment when the largest turns begin at idle.

Screw H is adjusted as follows: warm up the converter and turn it counterclockwise ¼ turn. To determine if everything is in order you will need a tachometer. The revolutions should be the same as the maximum indicated in the chainsaw's passport.

Your actions should result in the engine immediately accelerating and making noise like fourfold.

The Husqvarna carburetor is adjusted in the same way.

Partner 351 differs only in that its factory settings initially supply the optimal amount of mixture, that is, everything should work correctly right away. But, if necessary, the above instructions will help you set up the carburetor correctly.

Lean and rich mixtures

A little more about “poor” and “rich” mixtures.

"Rich Blend"

A “rich” mixture is a fuel mixture in which the amount of fuel supplied to the carburetor exceeds the norm. In this case, the fuel does not have time to burn completely and less energy is produced than with the optimal ratio of fuel and air. Partially unused fuel enters the muffler, which causes the chainsaw to smoke heavily.

"Lean mixture"

There is excess air in a “lean” mixture, which is also not good, as it has its drawbacks. Namely: insufficient energy during a flash (which means a loss of power as a result), excessive heating of the cylinder due to insufficient lubrication and high speeds, which leads to scuffing, and then it’s not far from “jamming” of the engine.

The machine is, in principle, efficient, but the “childhood diseases” have not yet been eliminated. To improve the image of this model, it is advisable to improve the build quality by at least a third. Standard Oregon tires and chains do not reach their full service life; only the installation of the Shtilev kit allowed the instrument to show all its capabilities. Nikita

The partner of the 352 model is a reliable workhorse, which more than pays off the cost of branded oils and other consumables. After 4 months of building a wooden house and clearing a half-hectare plot of large bushes, the performance characteristics of the tool remained almost at the original level. Savva Fedorovich

Adjustment of the Urals

It is slightly different in that it should not be carried out at sharp maximum speeds, but should be ensured that the chain picks them up quickly, but smoothly, without moving along the tire.

In any case, you should take the adjustment very seriously, because if it is done incorrectly, the saw will not stay with you for a long time. Take care of your tools and if you are not confident in your abilities, it is better to take them to a professional.

Any of them, even strong Friendship, needs attention and care. And then the chainsaw will be your faithful assistant for many years to come.

When purchasing a HUS365 chainsaw, you should be prepared for the fact that after a month of using it, you will not want to deal with any saw other than this brand. This is explained by its reliability, affordability, and most importantly, ease of operation.

Purpose and class of chainsaw

The Partner 352 chainsaw belongs to the semi-professional category. Possessing quite a lot of power, it can be classified as a budget, inexpensive saw. The simple but reliable design of the chainsaw is adapted to high and prolonged loads. The technical parameters are quite suitable for the full or partial mechanization of household operations, primarily related to the collection of firewood.

The length of the tire and a powerful engine make the chainsaw a reliable assistant at all stages, be it clearing a plot of bushes, felling trees, trimming branches, bucking, cutting into logs.

But this is not the only purpose of the Partner 352 chainsaw. Its light weight and compactness allows it to perform other work related to wood:

• construction of wooden buildings;
• processing of industrial wood and wooden building materials;
• caring for trees in the garden;
• clearing the area of ​​unnecessary trees and bushes.

Related Posts

Do-it-yourself chainsaw carburetor adjustment

For an independent carburetor option, you need to familiarize yourself with its structure and understand the procedure for the work that is carried out to adjust the parts responsible for the proper functioning of the components of the device and parts close to it.

It is necessary to carefully handle items for the system option, and also to determine whether the set characteristics correspond to very acceptable values.

About the carburetor design

The carburetor serves to mix the flammable mixture with air while maintaining predetermined proportions. If clear doses are not followed, the proper operation of the engine is at risk. When a huge amount of air enters during mixing of the components, but there is not enough fuel, then such a mixture is considered “lean”.

Oversaturation should not be allowed, because with a larger amount of fuel compared to air, malfunctions or engine wear are also likely. Carburetor adjustment is needed not only before initial use, but also when any differences in its operation are detected. Before working with a chainsaw, do not forget to run it in.

Carburetor components

The carburetor design contains a standard set of parts, but may vary slightly depending on the manufacturer. Components:

1. The basis . This is a special tube that is visually similar to an aerodynamic design. Air passes through it. In the transverse direction, a damper is located in the middle of the pipe. Its position can be changed. The more it is extended into the passage, the less air enters the engine.
2. Diffuser . This is the constricted part of the tube. Adjusting the carburetor of the Partner 350 chainsaw. With its help, the air supply speed increases precisely in the segment from which the fuel comes out.
3. Channels for fuel supply. The fuel mixture is contained in the float chamber, then passes into the nozzle, from which it flows into the atomizer.
4. Float chamber . It is a separate structural element, reminiscent of the shape of a tank. Designed to constantly maintain the optimal level of fuel fluid before entering the channel from which air enters.

Don't know which chainsaw to choose? Read our article.

Are you looking for cheaper models, but reliable and time-tested? Pay attention to Russian-made chainsaws.

Or explore foreign chainsaw manufacturers such as Shtil.

What you need to have for setup

Each carburetor owner must have the necessary tools to adjust this system. There are three adjustment screws that are located on the body of the device. They have their own markings:

• L - screw for correcting low speeds.
• H - screw for adjusting high speed.
• T - regulates idle speed, in most cases used for experiments.

Chainsaw air filter

Before adjusting the carburetor, you need to prepare the device:

1. The engine warms up, that is, it starts about 10 minutes before repairs, and turns off when starting work (see how to start a chainsaw).
2. The air filter is checked and washed.
3. The chain is stopped by turning screw T until it stops (see chain oil).

To carry out a safe repair, you need to prepare a flat surface where you can carefully place the device and turn the chain in the opposite direction. Need a tachometer. It determines whether there is a malfunction in the carburetor. When turning the screws, the sound should be perfect and absolutely smooth. If you notice squealing notes, the mixture is oversaturated.

Setup instructions

Carburetor adjustment is divided into two main stages. The first one is called basic. It is performed with the engine running. The second is performed when the engine is warm.

To carry out the carburetor setup procedure successfully, you need to read the operating instructions for a specific model in advance to identify additional features of setting up the device.

First stage

The adjusting screws for the highest and lowest speeds should be moved clockwise until the highest resistance is met. When the screws reach the stop, you need to move them in the opposite direction and leave them 1.5 turns.

Main stage

PARTNER 350 Correct carburetor adjustment.

Partner chainsaw does not start

.
Carburetor
for 7 bucks, disadvantages, how to fix.

Chainsaw Partner. Carburetor repair, adjustment.

Carburetor adjustment

on the

Partner
chainsaw
using THL screws .

The engine is turned on at medium speed and warms up for about 10 minutes. The screw responsible for adjusting the idle speed should move clockwise. It is released only when the engine reaches stable operation mode. It is necessary to ensure that the chain does not move during this process.

In idling mode, the engine may stall (the reason is here). In this case, you must immediately turn the adjusting screw clockwise until it stops. Sometimes the chain starts to move. In this case, turn the adjusting screw in the opposite direction.

Partner 351 - technical specifications

The Partner 351 chainsaw is one of the best devices, characterized by low weight and high performance. There are also few products in this category that can compete with this chainsaw in terms of engine power.

Operational features:

• Fuel consumption is minimal thanks to the installed air filter, which operates on the CCS system.
• The engine life of the Partner 351 is increased using a double air cleaning system. The chain operates at the highest possible speed.
• The Partner chainsaw is designed for long continuous use.
• The device is equipped with a system for damping vibration flows.
• The safety of working with the Partner 351 tool guarantees instantaneous operation of the chain brake.

Comparison of light class chainsaws STIHL MS-180, Husqvarna-137 and Partner-351

The solid factory parameters of the 351st model from Partner significantly distinguish it from other household chainsaws.

Garden tool indicators include:

• The power of the standard petrol engine is 1.9 liters. s./1.4 kW;
• crankshaft rotation speed at idle/maximum speed – 3000/12000 rpm;
• possible length of the tire used for work is 35–40 cm;
• number of chain links – 56;
• sound pressure on the operator – 98 dB.

Currently reading: Stil or Husqvarna pole saw, which is better?

One of the main advantages of the proprietary model Partner 351 is its relatively light weight. With fully filled fuel and oil tanks, as well as with the saw set installed, this parameter is 4.7 kg.

In the segment of non-professional chainsaws, Partner 351 occupies a worthy place. Lightweight, productive and reliable, the saw allows you to perform a wide range of wood sawing tasks at the household level.

Chainsaw Partner 351 is a device designed for collecting firewood and felling small trees.

As a Husqvarna company, the Patrner subsidiary specializes in the production of a wide range of power tools and chain saws of various capacities.

Among the brand's models in demand among domestic buyers, the leading position is occupied by the Partner 350 s chainsaw.

The household model is widely used in private households, in country houses and gardens, in carpentry workshops to perform the following tasks:

• pruning branches and branches;
• tree care and crowning;
• felling trees of small diameter;
• clearing the area of ​​unwanted growth;
• sawing trunks, branches, boards, beams;
• preparing firewood for the winter.

The Partner 350 chainsaw can also be used for private construction (for the construction of log houses, bathhouses, gazebos, gazebos, wooden houses).

The Partner 351 saw has good power and performance indicators, despite its compact size and weight of 4.7 kg:

• motor power 1400 W (1.9 hp);
• tire 35 cm. It is possible to install a tire 41 cm;
• 56 link chain with 3/8 inch pitch;
• spark plug - Bosch WSR 6F;
• fuel tank capacity 380 g;
• oil tank 200 g;
• noise level is just over 100 dB.

The air filter operating on the CCS system helps to significantly reduce fuel consumption. The double air purification system increases the service life of the Partner 351 chainsaw motor. The chain operates at high speeds.

Thoughtful ergonomics and a reliable vibration damping system allow you to use the tool for several hours without interruption.

The chain brake works instantly, which makes working with the chainsaw even more comfortable and safe.

What kind of carburetor is used on the Partner 350 chainsaw

Partner 350 chainsaws use carburetors from the Japanese company Walbro, which is the world's largest manufacturer of fuel units for gasoline-powered vehicles.

This is a specialized company that constantly works to improve the design and quality of its products and values ​​​​its reputation.

On the body of the carburetor from this company there is the Walbro inscription cast in large letters, and there is also a product number. If such an inscription is missing, this means that a particular Partner 350 chainsaw has exactly the same carburetor, but from a different, less well-known manufacturer. In Russia, Partner 350 chainsaws are found with both Walbro carburetors and unmarked products. They are identical in design and operating parameters.

Operating principle and design of the Partner 350 carburetor

The carburetor receives fuel from the gas tank, atomizes it in the diffuser nozzle and supplies the fuel-air mixture to the combustion chamber.

The supply of fuel from the tank to the carburetor storage tank is metered by a membrane, which opens and closes the needle valve. A calibrated hole in the jet and adjusting screws dose the flow of fuel from the carburetor into the combustion chamber.

The engine speed depends on the amount of fuel-air mixture entering the combustion chamber. This amount is regulated during operation by the throttle valve, which opens when the throttle is pressed, and vice versa.

The air damper regulates the air flow from the air filter. During a cold start, it is closed, which makes starting the engine easier. When you press the throttle it opens.

To operate in idle mode, an idle mode is provided, when a minimum amount of fuel mixture enters the combustion chamber without pressing the throttle.

To start a cold engine, the carburetor is equipped with a manual primer pump (suction). Main carburetor components:

This is what the original carburetor looks like removed from the Partner 350 chainsaw

Use a screwdriver to indicate the injector valve

Chainsaw device "Partner" 351

The Partner 351 chainsaw has a structure typical of other chain saws.

The numbers in the figure correspond to:

1. chain;
2. guide;
3. spark catcher;
4. safety block;
5. lever;
6. starter cable;
7. ignition switch;
8. crankcase cover;
9. fuel tank filling hole;
10. starter;
11. gear stop;
12. tire mounts;
13. muffler;
14. candle;
15. air filter damper;
16. carburetor choke lever;
17. throttle valve;
18. primer activation button;
19. throttling toggle switch;
20. screw tensioner of the cutting unit;
21. chain catcher;
22. protective casing.

Despite the Swedish origin of the manufacturer, the “Partner” 351 chainsaw is assembled in factories in China.

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

All carburetors on Partner 350 chainsaws are factory tuned at special stands. The adjusting screws are securely fixed by springs and are extremely rarely unscrewed during operation of the chainsaw. But adjusting the carburetor on your own is sometimes required, although not often.

For example, if the piston group is heavily worn, the loss of compression and power can be compensated by increasing the fuel supply. This will lead to excessive fuel consumption, and the piston group will still have to be changed. But the chainsaw can still work for some time.

In some cases, adjustment is required after running in the engine and when switching to a different brand of gasoline.

Signs that the carburetor needs to be adjusted:

1. The chainsaw stalls at idle speed (low speed) or the speed is too high, the chain spins. The idle speed needs to be adjusted using screw T.
2. When you press the throttle, the engine does not develop speed and “fails.” There is not enough fuel, the mixture is too lean (not enough gasoline - too much air). Adjustment is required with screws L and H.

Process description

1. If the chainsaw carburetor is not adjusted and it is not possible to start the chainsaw, then the adjustment begins by installing screws (L) and (H) to the standard setting position. This is 1/5 turn of the screws until they are fully tightened.
2. After which, you need to start the engine, let it run a little and warm up.
3. The next step is setting the low speed mode. Optimal engine operation at low end can be achieved by adjusting the screw (L) and idle speed (T). To do this, first screw (L) is tightened until maximum engine speed is reached, then released by 1/4, and screw (T) is used to return the idle speed to normal.
4. After adjusting the operation at the “lower” range, the traction and maximum engine speed are adjusted. To do this, slowly tighten the screw (H) and check the speed using the readings of the electronic tachometer. It is unacceptable to exceed the maximum engine speed declared by the manufacturer! The ideal option for this would be to use an electronic tachometer, which can be bought at a low price on Aliexpress.

Buy tachometer on Aliexpress

Location of carburetor adjustment screws on a Husqvarna chainsaw. An important step is to check the saw in all operating modes after adjustment; to do this, you need to let the chainsaw cool, and then start it according to the cold tool starting algorithm. If the saw starts up normally and idles smoothly, you need to check how it cuts. If during the inspection process shortcomings in the power of the chainsaw are discovered, then it is necessary to repeat the adjustment of the screw (H) by unscrewing it and checking the traction in operation.

We recommend watching a video on how to clean and adjust a chainsaw carburetor, the author of which also talks about the harmful effects of fuel on the components of the carburetor. The example shows how to restore your carburetor using an inexpensive repair kit.

Carburetor features, pros and cons

The Partner 350 chainsaw carburetor has a standard (classic) design, identical to almost all modern chainsaw carburetors of similar power. It is quite reliable, fully ensures optimal engine operation in all modes and economical fuel consumption. It does not have any unique features that radically distinguish it from other carburetors.

The pros and cons depend not on the design of the carburetor itself, but on the manufacturer. Original carburetors from Walbro of high quality. Carburetors from unknown manufacturers leave much to be desired, depending on your luck.

Structural properties

In terms of productivity of sawing work of varying complexity, reliability of components and assemblies, durability of operation, the Partner 352 saw complies with the current standards. The model is equipped with an easy engine starting system, a full-fledged vibration damper, and convenient access to tuning and adjustment units.

The chainsaw differs from similar models:

• reduced fuel consumption;
• sufficient torque reserve to compensate for temporary loads;
• comfortable level of vibration;
• modern design and comfortable handle shape for a firm grip.

DIY chainsaw carburetor repair Partner 350

The carburetor parts of the Partner 350 chainsaw do not experience strong mechanical and thermal loads during operation, unlike, for example, a piston system. Therefore, in theory, there is nothing to break in it. In practice, after many years of operation, gaskets most often depressurize and the elastic membrane fails. Over time it can become tough.

Failures of counterfeit carburetors are unpredictable. Anything can break in them at any time - damper axles, needle valve, pump, diffuser, etc.

In addition to breakdowns, the carburetor of the Partner 350 chainsaw may fail due to contamination. For repairs and cleaning, the carburetor is removed and disassembled.

It is worth noting that the accelerator pump of the Partner 350 carburetor is its weak point.

How to remove and disassemble: step-by-step algorithm

Before removing, the carburetor of the Partner 350 chainsaw and the space around it must be cleaned with a brush so that dirt does not get inside the engine. After which they remove:

• Air filter.
• Fuel hose.
• Throttle linkage.
• Then the screws securing the carburetor to the engine body are unscrewed.

After removal, place the carburetor on a clean surface and unscrew the screws securing the cover to the body. Remove the cover and gasket. Parts and fasteners are laid out sequentially. Disassembly is carried out slowly, remembering well which part was removed from where. It is extremely important not to confuse screws H and L when assembling. They are the same in shape, but different lengths.

After the operations have been completed, the Partner 350 carburetor is available for cleaning.

This is what a half disassembled carburetor looks like

Cleaning the carburetor: basic points, how to clean it correctly

Whether the carburetor is clean or not is usually determined immediately, visually.

First of all, the smallest holes become contaminated - in the nozzle, diffuser, channels. There may be dirty sludge in the chambers. The disassembled carburetor body and parts are washed in a bath of gasoline or kerosene. Then the channels and holes are blown out with a car pump or air compressor. It is best to use a special nozzle with a thin channel at the end. Wash again.

During assembly, if necessary, replace the gaskets and membrane with new ones from the repair kit.

When cleaning the carburetor, be sure to clean the hole in the cover under which the membrane is located. Marked in the photo with a red square

Repair kit: what is included in it and where to buy

Repair kits are sold with two sets of configurations.

The first includes gaskets and a membrane, that is, non-metallic spare parts. The second one additionally comes with a crosspiece with a needle valve.

Repair kits cost approximately from 300 to 370 rubles. and are sold in specialized stores and on many online platforms.

Fuel supply problem

A similar chainsaw malfunction can be determined by inspecting the spark plug. Fuel may not enter the cylinder for various reasons:

1. The fuel filter installed in the tank is heavily clogged.
2. The hole in the tank cap is clogged, preventing gasoline from flowing out.
3. There is poor or no fuel flow from the carburetor.

If there is not the correct ratio between gasoline and air mixed in the carburetor or there is not enough fuel supplied, you should check whether the channels and the carburetor air filter are clogged. In addition, it may need to be adjusted.

Before cleaning, the filter is carefully removed and washed with detergent, after which it is left to dry. Then it is put in place.

The carburetor is usually adjusted using screws for maximum and minimum speed. When carrying out this procedure, you must strictly follow the instructions for repairing the chainsaw, otherwise you may damage the motor. Sometimes manufacturers leave only one adjustment screw to prevent inexperienced technicians from interfering with the operation of the carburetor.

If debugging does not fix anything, then it is worth cleaning the channels and filter mesh, and also checking the integrity of the membrane.

Do not forget that the carburetor is one of the complex mechanisms of a chainsaw, so you need to approach it responsibly when cleaning and disassembling it.

It consists of many small elements that can pop out unnoticed and be difficult to find. Often after disassembling this device, some users are unable to reassemble it.

What to do if the muffler is clogged

If the chainsaw engine functions normally at low speeds, but smokes and stalls at high speeds, then the reason is most likely in the muffler. Remove it first, but be sure to close the outlet.

Then disassemble and clean from carbon deposits using a dry method or detergents, dry with a hairdryer, assemble and install.

Do not dry clean without special protective equipment, since carcinogens contained in carbon deposits are released in the form of dust. Inhaling it is very dangerous. When operating a chainsaw, it is necessary to monitor the quality of the fuel mixture.

Chain failure

It is necessary to regularly lubricate the chain while the saw is in use, because it works under extremely difficult conditions. Its service life is negatively affected by abrasive particles, dust and even overheating.

If you leave the chain dry, it will soon stretch and overheat. In the worst case, jamming may occur, that is, the sprocket may break. Oil is supplied through it through channels, which are often clogged with sawdust. They also need to be cleaned regularly.

In addition, constantly clear debris and sawdust from under the chainsaw cover, as this may prevent the chain brake from working. In addition, contamination has a negative impact on the performance of the device.