Chainsaw Partner 352 carburetor adjustment

Operating manual for chainsaw Partner 352

The Partner 352 chainsaw is designed for the following range of operations:

  • felling of wood;
  • sawing wood without support;
  • sawing a tree using another log;
  • sawing wood using a special support;
  • pruning and delimbing.

But besides this, it is allowed to be used in other areas, for example, in construction. However, all these operations must comply with the attached instructions, since improper use can lead to disastrous consequences, for example, damage to the Partner 352 chainsaw, domestic or industrial injuries.

Chainsaw device Partner 352

The Partner 352 chainsaw has a set of assemblies that are usual for this kind of devices, which ensure the operability of the tool. The basis of work is provided by a gasoline engine, but in addition to it, the tool includes the following elements:

  • fuel tank;
  • tank for chain oil;
  • a pair of handles (back and front);
  • body;
  • protective shield (chain brake);
  • chain catcher;
  • cylinder and starter covers;
  • air damper with a lever;
  • tension screw and chain brake nut;
  • fuel suction;
  • carburetor adjustment screw;
  • muffler;
  • comb;
  • ignition switch.

With the correct operation of the tool, they provide their own, functions, but require timely maintenance. For example, a saw chain requires timely sharpening, tightening and replacement. Also, the tire requires replacement, because during the operation of the Partner 352 chainsaw, it grinds down over time.

Chainsaw Partner 352

chainsaw, partner, carburetor, adjustment

  • Chainsaw device Partner 352
  • Adjusting the Partner 352 carburetor
  • Operating manual for chainsaw Partner 352
  • Technical characteristics of the Partner 352 chainsaw
  • Reviews about chainsaw Partner 352

The Partner 352 chainsaw belongs to the range of high power chainsaws. Its design is adapted to high loads and long-term work with the tool, which significantly improves the quality of work and labor productivity during operation. In comparison with other models, it has both disadvantages and advantages due to the design features.

Technical characteristics of the Partner 352 chainsaw

  • Power. 1400 W;
  • Chain pitch. 3/8 ″;
  • Bus length. 40 cm;
  • Engine volume. 36 cm3;
  • Fuel tank capacity. 0.4 l;
  • Oil tank capacity. 0.3 l;
  • Anti-vibration. yes;
  • Chain brake. yes;
  • Weight. 4.7 kg.

Adjusting the Partner 352 carburetor

Chainsaw Partner 352 due to improper storage, overloading during use, as well as the inadequacy of the fuel mixture used, may require additional carburetor adjustment, because it is initially configured by the manufacturer for ideal conditions. Before making adjustments, it is important to take care of the presence of protective devices, in particular gloves or mittens, to ensure safety.

An idle screw is available for adjustment in this model. It adjusts when the engine is running. To adjust, turn the corresponding screw clockwise until resistance is obtained. After that, the screw must be unscrewed in the opposite direction by 4½ turns.


The household saw is operated with a carburetor two-stroke power unit running on a fuel gasoline-oil mixture. The 36cc engine develops power up to 1.9 HP, which makes it possible to use the tool in a set with a 16 ” cutting headset.

Fuel tank with a volume of 400 ml, provides the possibility of non-stop operation of the saw at high-speed modes for up to an hour and a half.

The design of the engine guarantees easy starting regardless of weather conditions, stability of traction characteristics in all operating and idling modes, easy maintenance.

ModelPartner 352
Manufacturer Partner
Manufacturing (assembly) Sweden
The birthplace of the brand Sweden
Saw application Household
Power, h.p. (kw) 1.9 (1.4)
Engine volume, cm3 36
Chain pitch, inches 3/8
Chain thickness, mm 1.3
Number of links, pcs 56
Fuel tank volume, l 0,4
Oil tank volume, l 0.2
Tire length, cm (inches) 40 (16)
Noise level, dB 106
Warranty, years one
Weight, kg 4.7
Instructions Download


The list of the main competitors in the domestic market of household appliances includes the popular MAKITA EA3202S40B, STIHL MS 180 14 ″ Picco chainsaws, the list of lesser-known brands includes the AL-KO BKS 4540 and EFCO 137/41 models.

Carburetor adjustment

The factory setting of the fuel system assumes that the engine is set to an optimal combination of traction and economy. Illiterate intervention in the carburetor operation can adversely affect the operation of the saw as a whole.

The adjustment is carried out on a warm engine after the air intake has been completely cleaned. The quality of work can be checked by the throttle response and stability of idle speed after a sharp drop in speed.

Chainsaw Partner 352. a budget tool for home use

For the full or partial mechanization of household work related to the harvesting of firewood, the construction of wooden structures, the processing of industrial wood and tree care, specialists recommend an inexpensive and productive chain saw Partner 352.

The tool of the household category has a number of properties that are more characteristic of semi-professional models.

This is confirmed by:

  • increased power of an economical power unit;
  • successfully implemented know-how and new design solutions;
  • complete set of the tool with a universal headset with a 16-inch tire.

Helpful information

Based on this model, Partner 352 Chrome was developed, which includes a number of measures to improve the reliability and durability of the tool when working in difficult conditions.

High-quality and affordable spare parts and consumables are supplied in the right quantity, which allows you to restore a faulty tool with a minimum investment of time and money.

Advantages and disadvantages

One of the main criteria for evaluating a tool is the cost of the saw itself, replacement equipment and consumables, in addition:

  • saw Partner 352 has proven itself in private and farm enterprises, its characteristics contribute to the stable growth of consumer demand;
  • the product is equipped with an emergency brake that blocks the movement of the chain in the event of traumatic and non-standard situations;
  • it is possible to install alternative unified tires in lengths of 14 and 16 inches;
  • the successful design of the vibration damper compensates for a significant part of low and high frequency vibrations;
  • good balance, the presence of a chain catcher has a positive effect on the productivity and safety of difficult sawing operations.

In Moscow and St. Petersburg.

Structural properties

In terms of productivity of sawing works 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 start system, a full-fledged vibration damper, convenient access to tuning and adjustment units.

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The chainsaw differs from similar models:

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

Carburetor device

If you decide that it is necessary to adjust the Partner-350 saw, then first you need to study the design of the elements. The system consists of a diffuser that acts as a constriction to increase the oxygen flow rate. The diffuser is located in the immediate vicinity of the fuel inlet. There is a tube with a cross baffle in the carburetor, it is necessary to regulate the flow of oxygen. Fuel comes from an atomizer, it is represented by a needle. To adjust the fuel when entering the channel, a float chamber is needed, it is also available in the carburetor device.


If you have a Partner-350 saw, the carburetor can be adjusted independently, without the involvement of specialists. After evaluating your capabilities and experience, proceed with the disassembly, the recommendations for which were presented above. Further, you can carry out the setting and subsequent adjustment. It is necessary to distinguish between three screws, it is in this amount that the “Partner” saw has them, but in some models the screw is installed in a single copy. The manufacturer has designated each with its own letter, which will allow you to understand what the element is intended for. Thus, the screw under the letter L must be used when setting low rpm. The upper rpm can be adjusted with the screw under the letter H. Idle speed can be adjusted with the screw under the designation T, for other models only it can be present.

Need for adjustment

In order to understand how the Partner-350 chainsaw is adjusted, it is best to familiarize yourself with the device of this unit in more detail at the first stage. If you understand the principle of operation and the constituent elements, you will be able to independently determine the cause of the breakdown. The carburetor acts as one of the main parts of the engine, which is necessary for the preparation and subsequent supply of fuel, the latter consists of fuel and oxygen. If the ratio of these ingredients is violated, then the motor may start to work incorrectly, and subsequently fail.


If you will be adjusting the carburetor of the Partner-350 chainsaw, you should familiarize yourself in more detail with the device of the unit, in many models the design features almost do not differ from each other, so the recommendations given will be relevant.

The elements must be removed with the utmost care, putting them in order; this will help you during the assembly process. Three bolts hold the top cover, they need to be removed, then you will see a layer of foam rubber, which acts as an integral part of the air filter. The technician will need to get rid of the fuel hose, this will remove the drive rod.

Adjustment of the carburetor of the Partner-350 chainsaw is impossible if you do not remove the tip of the cable, this should be done in the next step. The gasoline hose, which is to the left of the fitting, will need to be thrown off. All of the above work will disconnect the carburetor, which can be adjusted. This mechanism is complex, therefore, if further disassembly is necessary, you need to remove the elements carefully, because their size is very small, which can easily cause them to be lost.

Mechanical causes of failure

Adjustment of the carburetor of the Partner-350 chainsaw may also be necessary in case of mechanical failures. For example, strong vibrations can damage the protective cover. Ultimately, the bolts in the carburetor become loose. The piston part of the motor can also wear out. Setting the carburetor helps in this case for a certain time; to fix the problem, you need to replace the worn part. The reason may be a blockage that occurs due to the use of poor quality fuel. Damage to the filter and scale build-up can lead to similar consequences. In this case, the carburetor will need to be disassembled, rinsed well and adjusted.

Principle of operation

If you have purchased a Partner-350 chain saw, carburetor adjustment may be required during operation. In order to perform these actions correctly, you must also familiarize yourself with the principle of operation of this piece of equipment. The fuel is atomized in the diffuser by a jet of air, which creates a mixture that is forced into the cylinder. The more fuel comes in, the higher the engine speed will be. In the described model, as in any other, the carburetor works according to the same scheme described above.

How to adjust the carburetor of the “Partner 350″ chainsaw

Carrying out repairs and dacha construction cannot do without using a chainsaw, this statement is also true when caring for a garden. If the tool turns out to be faulty, then all the work will stop because of this, so it is so important to have the skills to identify and troubleshoot yourself. If you have some experience, then you can adjust the carburetor, this procedure, although difficult, is quite doable.

Additional recommendations

If you purchased the Partner-350 saw, the carburetor adjustment can be carried out during operation. Before carrying out these works, you must remember that the factory settings are optimal. Using the screws described above, you can adjust the operation of the motor in special situations, among them different climatic conditions can be distinguished. It is necessary to use screws under the letters L and H when adjusting. To increase the speed, turn them clockwise.

To reduce the speed, the screws are turned in the opposite direction. It is also important to take into account the sequence of using the elements, which looks as follows: L. H. T. If during the adjustment you encounter difficulties, then it would be best to contact a specialist, because an incorrect setting can damage the motor.

Carburetor device

The purpose of the carburetor of the Partner 351 chainsaw is to prepare and supply the correct fuel-air mixture to the engine.

The carburetor power supply system of the chainsaw engine is arranged according to a typical scheme and includes a fuel pump, a main mixing chamber with a diaphragm, throttle and air valves and three adjusting screws (needles). Technological channels for the movement of the air-fuel mixture are provided in the aluminum body.

The throttle body is a brass plate that controls the amount and speed of air entering through the variable air intake. Constriction towards the center and expansion towards the opposite edge, as in a Venturi tube, creates a vacuum that traps fuel on its way to the engine.

The pressure in the main chamber of the carburetor is close to atmospheric, but when the engine is started, a vacuum occurs in the air passages. Opening the damper increases the intensity of the air supply, and with this the power of suction of fuel, and the number of working revolutions of the internal combustion engine.

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If the chainsaw starts up tight and stalls, does not generate full power, sluggishly picks up speed and consumes an excessive amount of gasoline, the carburetor must be adjusted.

Basic setup

  • Tighten the screw T clockwise until it stops and then turn it 4.5 turns in the opposite direction.
  • Tighten the screws H and L carefully to the end and then back out 2 turns.
  • If the engine does not stall at idle, the chain does not move, the engine accelerates quickly and runs smoothly, then basic adjustment is sufficient. If not, fine tuning is required. The chainsaw should be started and warmed up for 5-10 minutes.

Advantages and disadvantages

The main task of the engines of motorcycle tools, in particular, chainsaws, is stable and confident operation in any position with respect to gravity. This feature, provided by a diaphragm carburetor with a built-in pump, along with its structural simplicity, is a significant advantage of the Partner 351 internal combustion engine power unit.

The disadvantages of the carburetor include the relative complexity of adjustment, a narrow range of the amount of mixture at the outlet and slow transitions between steady-state modes. In addition, it is sensitive to accelerations directed perpendicular to the membranes.

The Partner 351 chainsaw has a serious flaw in the power supply system, which leads to interruptions in operation. This drawback lies in the adapter installed between the engine and the carburetor (we already talked about this above, the location of the adapter was also noted in the photo).

Over time, a backlash appears at the junction and the chainsaw begins to suck in air. This malfunction manifests itself as a failure when starting (the saw simply does not start), or during operation in the form of instability of revolutions, they spontaneously rise or fall.

Repair of the carburetor of the Partner 351 chainsaw (main malfunctions, their elimination)

Even a very careful and correct adjustment of the carburetor may not solve some of its malfunctions and the problems caused by them in the operation of the Partner 351 chain saw. If the adjustment fails to restore the normal performance of the internal combustion engine power unit, it must be dismantled, disassembled and repaired.

In some cases, interruptions in the operation of the carburetor are associated with clogged jets, fuel and air filters and, as a result, “underfilling” of fuel. The main symptoms of this problem are loss of power and unstable engine operation. Dust, small debris and even water droplets can become the reason, and the water frozen in the carburetor completely blocks the fuel supply channels.

In the presence of a compressor, all channels of the carburetor are purged with compressed air, and if the procedure did not help, they wash it in an ultrasonic bath (jewelry or for washing optics are suitable) using a special carburetor fluid. During the cleaning process, it is forbidden to use metal needles, wire, fluffy or “loose” fabric.

Along with the “underfilling” of fuel, its “overflow” is also considered a malfunction.

There are often cases when the chainsaw begins to work unstably due to a leakage, which is formed due to a bursting spacer between the carburetor and the chainsaw engine (pictured below). The only way to solve the problem is to replace it with a good one.

Adapter between the engine and the carburetor of the Partner 351 chainsaw

Why does the carburetor fill up: causes and elimination

In the vast majority of cases, the cause of fuel overflow is a hardened or worn out membrane, which presses on the rocker arm associated with the needle. But the problem may lie in damage to the needle, valves and levers involved in the operation of the unit. In these cases, a complete analysis of the carburetor is required to clarify the cause of the malfunction, and then. replacement of unusable consumables.

Before disassembling the carburetor, it is recommended to rinse it from the outside with gasoline, reassembly is carried out only after thorough cleaning, drying and processing with compressed air.

To troubleshoot fuel overflow, a repair kit for the carburetor of the Partner 351 chainsaw will come in handy, which includes all the necessary spare parts and consumables.

Do-it-yourself adjustment of the carburetor of the Partner 351 chainsaw

You can cope with the tuning of the carburetor of the Partner 351 chainsaw yourself. It is adjusted by three screws, marked with the Latin letters L, H and T. The letter T denotes the idle speed adjustment screw, H. high speed, L. low.

The rebuilding process involves two stages: basic and final. The exact value of the angles of rotation must be specified in the detailed instruction manual for the Partner 351 chainsaw.

To access the carburetor, you need to remove the top cover of the chainsaw Adjusting screws L and H

Saw carburetor tuning and minor repairs can be done without experience, but in order to do it correctly, you need to follow the algorithm described in the attached documentation. However, you should not overestimate your strengths, because sometimes it is cheaper to pay a specialist for quality service than to eliminate the consequences of your unprofessional repair.

Greetings to you dear and most loyal readers of my blog. In today’s article, I decided to consider how to adjust the carburetor on a chainsaw. After all, as it seems to me, you have repeatedly come across a problem that your “darling” let you down when it was so necessary. And since you and I are economical and do not want to spend money on what 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 see shortly, this is very easy to do. You don’t even need anything special to do it. I specifically considered the adjustment of carburetors of all famous brands of saws, each of which has its own tricks and nuances, and in my opinion this is the best information on the network.!

DIY carburetor repair

The carburetor is easy to disassemble, so you can repair the chainsaw carburetor yourself. For example, if necessary, it is quite possible to do the following operations with your own hands:

  • replace the gasket under the cover of the main chamber;
  • flush or replace the fuel filter;
  • replace needle valve and fuel pump diaphragm.

Before proceeding with the disassembly of the carburetor, it is necessary to clean the dirt from the surface of the body, as it can get inside the carburetor and clog the holes of the needle valves and the jet.

Next, you should undock the fasteners of the air and throttle control rods, dismantle the air filter and remove the cover of the main chamber by unscrewing the fastening screws. After that, you can start replacing the mentioned parts.

Very often, the reason for not starting the saw can be defects in the ignition system, in particular, spark plugs due to the following reasons:

  • carbon deposits on the candle. indicates poor quality oil or improper carburetor adjustment;
  • filling the spark plug with fuel. incorrect carburetor adjustment.
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To check the condition of the spark plug, unscrew it with a special wrench from the cylinder head.

The carbon deposits on the candle are removed with a needle or awl, and, if necessary, with a sandpaper, then we put it in place and try to start the engine.

We wipe the flooded candle with a rag, dry it, put it in place and try to start the saw.

In some cases, the engine smokes and stalls at high revs. The reason may be clogging of the muffler with exhaust products, so you need to remove the muffler, rinse the carbon deposits with gasoline, wipe it, dry it and put it back in place. While the muffler is not in place, the exhaust outlet should be covered with a rag to prevent dirt from entering.

Ural adjustment

It differs slightly in that it should not be carried out at sharp maximum rpm, but make sure that the chain picks them up quickly, but smoothly, without moving along the bus.

In any case, it is worth taking the adjustment very seriously, because if it is carried out 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 it to a professional.

Any of them, even a 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 management.

Step by step setup

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

Partner P350 carburetor adjustment

In this model, we have three regulators:

  • Low rpm. L
  • High. H
  • Singles. T.

Once released from production, these chainsaws are tuned to deliver more mix than necessary. This should be the case only in the first hours of work.

When the motor warms up, it is best to re-tune it. At idle, turn the screw T counterclockwise until the chain stops, after which we adjust each of them in the order: L, H, T.

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

Adjust the screw H as follows: warm up the convertible and turn it counterclockwise ¼ turn. To determine if everything is in order, you will need a tachometer. The turns must be the same as the maximum ones indicated in the chainsaw passport.

Your actions should lead to the fact that the engine immediately accelerates and makes a noise like four times.

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 at once. But, if necessary, the instructions above will help you set up the carburetor correctly.

The main causes of malfunctions of the chainsaw 350

  • Malfunctions associated with the accumulation of a large amount of oxygen or the presence of insufficient fuel.
  • Interruptions in work are noted if there is an increased fuel consumption, leading to a large emission of exhaust gases, which oversaturated the fuel mixture.
  • An unexpected malfunction often occurs when there are mechanical breakdowns. So, in the presence of strong vibrations, a similar problem may arise, the protective cap is damaged. Vibration loosens fixed bolts.
  • Wear of the piston area of ​​the motor. This problem can be eliminated only by replacing the damaged element. Then you need to configure the node.
  • Interruptions in the operation of the Partner 350 carburetor may appear when using low quality fuel. This problem causes the filter to be damaged. To eliminate this situation, it is necessary to disassemble, flush the working units.

Adjusting the carburetor of the Partner 352 chainsaw

The hand-held chainsaw is an excellent assistant in the personal household, which is indispensable for the preparation of firewood, pruning of tree branches, as well as for the construction of wooden log cabins for houses, baths and outbuildings. The design of the saws allows cutting and sawing of medium-sized tree trunks.

Currently, there is a large selection of chainsaws on the market, among which one can note the Partner chainsaws of the Swedish concern Husqvarna and the Huter chainsaws of the German company of the same name, for their compactness, lightness, performance and reasonable prices.

The ease of maintenance of the Partner and Huter saws allows even the first person to handle them, but, nevertheless, the chainsaw is a complex device and requires careful attention to itself. In the process of work, various kinds of malfunctions sometimes occur that affect the efficient operation, and the user must be able to cope with them.

How to properly adjust the carburetor?

Consider, as an example, adjusting the carburetor of a Partner chainsaw.

To adjust, you need to have a slotted screwdriver and a device. a tachometer, which allows you to measure the engine speed.

The setting is carried out in the following sequence:

  • tuning the carburetor of the chainsaw at low speeds;
  • adjustment at maximum speed;
  • fine tuning to work at idle;
  • checking the operation of the saw in all modes.

You need to start after the engine has been running and warmed up.

The chainsaw is adjusted using three adjusting screws on its body:

  • screw L. adjusting the fuel supply at medium and low speeds
  • screw H. at high speeds;
  • screw T. at idle.

If the carburetor is completely misaligned and the engine does not want to start, set the adjusting screws L and H to the standard setting: first tighten them completely, then unscrew them half a turn.

Start the engine and let it warm up, then start adjusting low rpm with screws L and T.

To do this, screw L should be unscrewed until the maximum engine speed is reached, and then screwed in by ¼ a turn, and set the idle speed with screw T.

Further, to adjust to maximum speed, slowly tighten the screw H, achieving maximum speed according to the tachometer.

After completing the adjustment, it is important to check the operation of the engine in all modes. To do this, you need to drown it out and let it cool.

Then start the saw in cold start mode and observe the engine idling. If the gas gradually increases and decreases, and the chain does not move, the adjustment is correct. The next step is to check while cutting. If there is a loss of power, re-adjust.