Chainsaw partner 360s repair

Carburetor design

The carburetor body of the Partner 340 chainsaw is made of aluminum alloy. It has technological channels through which a mixture of fuel and oil and a diffuser moves. The latter's task. Mix air with gasoline to form a flammable mixture.

The main elements of the carburetor are:

Fuel pump;
Main chamber with membrane;
Throttle and air valves;
Self-tapping screws (adjusting quality, quantity, idle speed);
Needle valve;
Fuel injectors.

Do-it-yourself adjustment of the carburetor of the Partner 340 chainsaw

Initially, the carburetor of the Partner 340 chainsaw was configured by the manufacturer to operate with maximum power and efficiency. If traction characteristics deteriorate, additional adjustment may be required, which is possible with sudden changes in air temperature or when filling the tank with other fuel.

The carburetor control algorithm itself is as follows:

On the left side there are special holes for access to quality (H) and quantity (L) bolts. For convenience, you need to remove the protective cover.
Tighten both screws all the way, then back each screw 1/5 of a turn.
Start the chainsaw and warm up the engine for 5-10 minutes.
Adjust idle speed. To do this, turn screw T counterclockwise until the engine runs as stable as possible. At the same time, make sure that the chain does not rotate (if it does, carefully tighten the screw until it stops). If the engine is idling, the T-screw should be loosened again.
We regulate engine power and mixture quality. Gently pressing the gas, we wait until the engine speed increases to maximum. According to the manufacturer, the maximum speed is 11.5 thousand rpm (use a portable electronic tachometer for an accurate determination). If the speed does not increase, turn screw L counterclockwise 1/8 turn. Do not exceed the maximum speed above the recommended speed as this may cause ignition problems. In this case, turn screw H counterclockwise, thereby reducing the maximum speed

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If you don't have a tachometer handy, you can determine if the carburetor is installed correctly. When the engine smokes heavily during operation (the mixture gets richer), screw L should be tightened slightly. When the engine warms up and picks up speed, screw H must be unscrewed counterclockwise by about ¼ rpm.

Sometimes adjustments don't help. The engine does not develop speed and does not stop. The cause may be a clogged filter or air intake. If necessary, clean and adjust the carburetor again if necessary.

When is tuning needed?

In particular, in rare cases it is necessary to adjust the carburetor of a chainsaw; more often problems arise related to fuel consumption or wear of parts. But sometimes “symptoms” indicate the need to regulate the mechanism. Here are some signs:

When the engine starts, it stops immediately. Alternatively, it won't start at all. The reason is too much air and not enough fuel.
Fuel consumption increases as a result. a large amount of exhaust gases. This is due to the reverse process. oversaturation of the mixture with fuel.

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Reasons for failure may be mechanical:

Due to severe vibration, the protective cap is damaged, causing all three bolts to become loose.
Due to wear on the engine piston. In this case, adjusting the chainsaw carburetor will only help temporarily; it is better to replace the worn part.
Due to clogging caused by poor quality fuel, scale or filter damage. The carburetor requires complete disassembly, cleaning and adjustment.

If the chainsaw suddenly stops working, it must be disassembled to find out the reasons.

Partner 340 chainsaw carburetor repair

Frequent failure of the Chainsaw Partner 340 carburetor is associated with fuel leakage (loss of seal). First you need to check the integrity of the gasket between the carburetor and the crankcase. If everything is in order, then we are talking about the tightness of the carburetor.

You will need a pressure gauge to check for leaks. The flow meter inlet is located on the fuel supply hose. Then, using a bulb, a certain amount of air is pumped into the carburetor. The device readings must be at least 0.4 bar. After some time, the pressure is measured again. If it falls, the carburetor needs to be repaired. This may be due to the following reasons:

Malfunction of the control diaphragm (in the main chamber) or the fuel pump membrane. The tightness here is broken due to the loss of the shape of the membranes or the appearance of holes on them. This problem occurs due to prolonged operation or overheating of the carburetor;
The needle does not completely close the valve, as low-quality fuel contributes to its clogging. In addition, the geometry of the needle taper changes over time due to wear. To this we add the lack of movement of the needle valve lever on its axis when it is worn or bent. And his spring lost its elasticity.
The valve plane in the fuel pump is broken. As a result, they are poorly pressed to the supporting plane and, as a result, the carburetor is not sealed (the pump loses performance).

The membrane chamber cover is installed on the carburetor side of the Partner 340 chainsaw. Through a hole in it, dirt enters the carburetor. As accumulation occurs, the diaphragm rises and compresses the needle valve lever. As a result, the lever does not completely block the fuel channel, which leads to a re-enrichment of the mixture.

Video: Partner P340s Carburetor Adjustment

All of the above malfunctions usually have two main causes: engine overheating (poor mixture) and carburetor clogging (insufficient fuel cleaning). Both problems can be solved by proper adjustment and timely cleaning of the carburetor and air filter. Don't forget about a high-quality gasoline filter element.

Particular attention should be paid to the grid when cleaning; the slightest clogging of it leads to unstable operation of the chainsaw.

Defective parts can be replaced by purchasing the appropriate repair kit.

Video: Setting up the Partner Chainsaw Carburetor

Summing up

The carburetor of the Partner 340s chainsaw has no significant drawbacks. It is a simple and reliable design. All breakdowns in it occur due to careless operation of the chainsaw and prolonged use (material fatigue). Proper adjustment and maintenance of the carburetor will significantly extend its service life. Some may not be happy with the average cost of a carburetor. 23-30 However, in this case the price is quite consistent with the quality.

Source

Partner is a chainsaw manufacturer and is a subsidiary of the famous Husqvarna AB. In today's review we will look at one of the most popular chainsaw models. Partner p340s.

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Characteristics and Features

Partner 340 has the following characteristics. With an output of 1.4 kW, which means 1.9 horsepower. This power is enough to perform all types of work in the garden or in the area near the house. The length of the bar is 35 centimeters, which is also sufficient to perform the tasks assigned to the Partnera 340. The saw is also lightweight and can be used even by women.

In addition, the Partner p340s has a built-in primer (manual fuel pump), which significantly reduces the number of times the starter must be cranked before starting, making it quick and easy.

It is also important that this chainsaw has an air-to-filter pre-filter system (CCS). This system allows you to increase the service life of the air filter and the time between maintenance.

This saw can be equipped with STIHL 63 PS3 and OREGON 3/8-1.3 mm dust chains with a length of 52 links.

Algorithm and description of the disassembly process

If you need to completely disassemble the Partner 350 chainsaw, the first thing to do when disassembling is to clean the saw using a compressor. Next, the chainsaw components are removed in the following order:

chain brake cover and saw set;
top cover;
saw handle;
starter.

After the first stage of disassembly is completed, we clean the chainsaw again using a compressor, since we already have access to the air ducts, which in most cases are heavily contaminated with wood dust.

At the next stage, it is convenient to remove the air filter housing and the Partner 350 carburetor.

After removing the carburetor, the inlet window of the cylinder must be plugged with a rag, this will prevent foreign objects from entering the engine crankcase.

The muffler can be removed either immediately after the carburetor is removed, or after the engine is removed. The outlet window is also covered with rags.

Next, remove the clutch and flywheel.

To do this, you will need to use a piston stopper by installing it in the spark plug hole.

The clutch on all Partner 350 chainsaws unscrews as the chain moves, this is done so that it does not unwind during operation. The flywheel nut has a standard thread and is unscrewed using a 13mm socket, counterclockwise.

After removing the clutch, the oil pump becomes accessible; it must also be removed.

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The last step is to unscrew the engine screws and remove it from the housing.

Instructions for removing the flywheel from the crankshaft

To remove the flywheel, you will need to use a special puller, but most craftsmen use a drift made of soft metal, since with its help the removal process is significantly accelerated.

The bottom line is that the flywheel nut is unscrewed until it is level with the plane of the shaft, after which, using a hammer and a drift mounted on the nut, with one sharp blow, the flywheel is removed from the shaft.

The method is a little barbaric, but time-tested and recommended by many masters as the most practical and reliable.

Basic faults

Like all push-pull saws, the Partner p340s has problems that can be easily fixed without contacting a service center. These disadvantages include:

No idle speed (one solution to the problem is adjusting the carburetor);
Difficult start (in some cases also solved by tuning);
There is no spark (to fix it, you need to replace the spark plug, check and, if necessary, install a new ignition coil, it is also called a magneto);
Clutch malfunctions (resolved by replacing the assembly).

Most chainsaw problems are caused by improper use. It is also necessary to monitor the condition of the saw and carry out timely cleaning and maintenance.

Never leave filled Partners p340 for a long time. Before downtime that will last more than a week, be sure to drain the fuel and use it to “burn out.” How to do this is described in the operating instructions provided by all Partner saws and more.

To solve more complex problems, such as loss of power from the tool or the inability to start the saw, you will need to contact a service center or perform a full diagnosis and repair of the Partner p340s. To familiarize yourself with the repair process, we recommend watching the video on how to diagnose, diagnose and repair your Partner p340.

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Troubleshooting common problems

The Partner 350 has popular faults that owners of these saws can diagnose and fix themselves. Let's take a closer look at popular faults and how to repair them yourself.

Stalls when you press the gas

If the Partner 350 stalls when you press the gas, then most likely there is a problem with the fuel system. The most common breakdown is an incorrectly adjusted carburetor or its malfunction, as well as extraneous air leaks.

Tip: If the chainsaw stalls when the speed increases, you should not immediately adjust the carburetor. Start by checking the engine for foreign air leaks. One of the signs of air leaks is increased idle speed.

Starts and stalls

If the Partner 350 starts up and immediately stalls, then, as in the previous case, there may be several reasons, but the most common is a difficult fuel supply. You should start troubleshooting by checking the condition of the fuel filter and lines. If the fuel flows normally, then check the spark and try to start the chainsaw on a new spark plug, as the saw may stall due to interruptions in sparking.

It is also necessary to check the draft of the air damper. If it does not open the air damper or does not open it completely, the engine may stall due to excessive fuel enrichment.

Lack of chain lubrication

There are several reasons for the lack of lubrication supply on the Partner 350 chainsaw, and in this case we can list them all.

Oil line rupture.
Oil filter clogged.
Defective worm drive gears.
Line or pump clogged.

How to solve oil pump problems is described above.

Pouring a candle

A very common problem that owners of Partner 350 have to face. The first place to start checking is to replace the spark plug with a known good one. If it doesn’t help, the spark is good, but the engine floods, then the reason is hidden in the carburetor settings. Instructions for diagnosing and adjusting the carburetor for the Partner 350 are on our website.

Carburetor adjustment

The Partner 340 has a Walbro adjustable diaphragm carburetor.

To set yourself up, you'll need a special screwdriver and a tachometer (a device for checking engine speed).

The adjustment screws are defined as standard. Screw (T). Adjusts the idle speed. (L). Responsible for the quality of the fuel mixture at low and medium speeds. (H). Regulates power and high speed.

If you do not know how and why the adjustment is made, it is better to contact a service center. Otherwise, you risk damaging the engine by setting the wrong settings.

The carburetor of the Partner 340s chainsaw is adjusted in two stages. The first stage of adjustment is carried out with the saw muted. To do this, set screws (L) and (H) to 1.5. 2 turns from fully twisted. Screw (T) is half tightened.

In the second stage, the chainsaw is started and allowed to run for a few minutes to warm up. Next, using the tachometer, they find the position of the screw (L) at which the engine will idle at maximum speed, and turn the screw ¼ back, turning it. Idle speed at idle is normal. 800 rpm is considered normal, you can check the tachometer. If there is no tachometer, you need to set the number of revolutions at which the dust chain does not spin at idle, but the chainsaw operates stably.

Screw (N) sets maximum speed. For p340s Partners their cost is 13,000.

Conclusion

The Partner 350 is not a bad household chainsaw, which is quite possible to repair yourself. For proper repair, you need to know the algorithm by which disassembly occurs. Have the necessary tools and understand how this chainsaw works. If you are not confident in your abilities, we advise you to contact the service center.

Content:

The time has come to buy a chainsaw for your garden plot or cottage, which can turn into a whole headache, since there are now more than enough offers on the market. As a rule, the average person is guided by the amount of money he is willing to spend on a purchase. So what model should you choose if you don’t have enough money for the famous Stihl and Husqvarna, but you don’t want to buy cheap Chinese saws. In this price range you can find the Partner line of chainsaws, models P340S, P350S and P360S, which we will examine in detail in this article.

About the manufacturer and main application.

The Swedish company Partner has a fairly long history of its development since 1949, initially setting a course for the development and production of garden equipment, including motor saws. Innovations were constantly introduced into the design and products were more focused on professional use.

At the turn of the 80s, the company was bought by the large corporation Electrolux Group, after which the scale of production reached new heights. The Parner brand began to be sold not only in Europe, but throughout the world; new factories began to open in Italy, the USA and Germany. Finally, success was fueled by the expansion of the line and division of equipment into classes: household and professional. This is how Partner became a global consumer brand.

In 2006, industrial giant Electrolux began to sell off its subsidiaries producing gardening equipment. All of Partner's facilities were purchased by another Swedish corporation, Husqvarna. Almost the entire assembly of the brand was transferred to factories in China. Now

there is the production of the current line of Partner chainsaws labeled P340-360S (the English “S” at the end means the new generation). You will say that we have paid too much attention to history. This is no accident, the purchase of the Husqvarna brand and the transfer of the plant to China significantly changed the line and quality. Looking ahead, let's say that it is not for the better.

Chainsaws Partner P340-360S belong to the amateur class and are intended purely for domestic use. However, the range of tasks is quite wide:

Firewood harvesting
Work in the garden, pruning branches and bushes
Use in construction
Saw for hiking and picnic

Technical characteristics and differences between the Partner P340S-360S models.

P340S	P360S
1.9 (1.4)	2.1 (1.52)
35.0	40.0
13000	—-
4.5	4.8
300	250
35 cm (14″)	45 cm (18″)
3/8″ – 1.3 mm	—-
52 stars	62 stars

There is no point in considering these models separately; they are practically twin saws. Let us highlight several main differences between these three models:

The engine has different power, which is achieved by boring the cylinder-piston group and, as a result, increases the working volume.
Saw sets of different lengths. It is logical that the increasing power of each model allows you to install a longer tire.
The weight, although slightly, differs; in fact, due to the heavier tire and chain, the difference will increase a little more.
The P360S chainsaw is equipped with a quick chain tensioner and SoftStart system, which makes it easier to start the engine.

In all other aspects there are no differences; the manufacturer did not bother. The lightest model, Parner P340S, has a short tire and low weight, so it can cope with small, simple tasks. P360S - a more powerful chainsaw with a 45 cm cut is suitable for preparing firewood, but it is heavier, bulkier due to the long tire and more expensive than the others. The P350S is something of a happy medium. So it’s all quite simple for you to choose.

Partner chainsaw design and design features.

By the way, the main device is no different from the device of other chainsaws. Rear handle and arc handle for comfortable grip, front mounted emergency brake stop for safety, saw set driven by a sprocket from the engine. But there are also features that are shown and described in the illustrations below:

Warranty and equipment.

The warranty on Partner chainsaws is 12 months (by the way, older models had a warranty of as much as 36 months). In addition to the mechanism itself, the standard delivery includes the most minimal set:

Bar and chain
Spark plug wrench
Tire cover
Instructions and warranty card
Box (if you need it).

Advantages and disadvantages of Partner P340S-360S chainsaws.

As we have already said, the new Partner chainsaws are not as flawless as the devices of the previous generation, but it cannot be said that these are bad saws. We will present the distinctive pros and cons of these models, and it is up to you to decide which of them to take into account first.

Lightweight and comfortable , which is noted by most users. The saws are really well balanced and made according to the hand.

The thoroughbred engine from Husqvarna is quite reliable, the chrome-plated sleeve is a nice addition for a household-grade saw.

High-quality assembly , this is not surprising, chainsaws are assembled at the Chinese Husqvarna plant at the same capacity and quality control as professional units.

It starts easily due to a clear start panel, a good starter and a very high-quality Walbro carburetor, by the way, the latter is installed on most professional chainsaws.

A good saw set in the starter kit. Yes, the tire says Partner, but in fact it is produced by the well-known Oregon company.

Weak range - in fact, three models represent an artificial expansion of the line by minor additions to the design and power.

Unsatisfactory service distribution at the Husqvarna base, there are still the same problems - in big cities everything is fine, but on the periphery there are not enough official workshops.

The difficulty of repairing some parts of Partner chainsaws, which we will indicate in the next paragraph. This also includes expensive original spare parts.

High cost for a household Chinese chainsaw, some may think so, and this is a controversial statement, given the advantages described above.

Repair and frequent malfunctions of Partner chainsaws.

Since Partner is a subsidiary of Husqvarna, the chainsaws will be serviced there during the warranty period. So don’t look for official Partner service centers on the map, they simply don’t exist, needless to say, there isn’t even an official website left.

We have already talked about the differences between Partner P340-360S chainsaws. So, as for the internals, everything is the same: oil supply system, carburetor, sprocket, rubber components, starter, etc. The only exception is piston groups bored to their own diameter, which, by the way, are also interchangeable. The cost of spare parts is sometimes scary for this class of chainsaws. Fortunately, more and more inexpensive substitutes are appearing on the market.

As for repairs, you will probably find a specialist in your city to fix this or that problem; the saw is a household saw and has a simple design. Let us note just a few nuances:

the difficulty of replacing the oil pump and the oil hose that often falls off from it, to remove which you need to completely disassemble the saw.
A fuel hose runs from the carburetor to the gas tank through a rubber seal, and over time it dries out and begins to leak. A minor problem that is difficult to get to and fix.
Often the throttle cable breaks, replacement requires skill, and the spare part itself still needs to be found.

If you want to learn more about the repairs and malfunctions of these models, then there are separate articles dedicated to this on our website; there really is something to look at:

Conclusion.

Partner chainsaws are an intermediate link between numerous Chinese and well-known brands Shtil and Husqvarna, both in terms of quality and cost. In principle, there is nothing bad to say - these are completely balanced household chainsaws that combine convenience (good ergonomics and anti-vibration system) and workmanship (reliability and assembly). So they are definitely worth the money. I would especially like to note the P360S model with keyless chain tensioning and easy SoftStart start. Of course, you should not expect high sawing efficiency from these amateur garden devices. Sawing branches and small trunks is just the thing.

Perhaps the only significant disadvantage is the poor distribution of components for modern Partner chainsaws, as well as their rather high cost. Still, we believe this is a matter of time, since every year more and more Chinese analogues of spare parts appear.

Thus, some were left with a negative impression due to a decrease in quality and assortment compared to the indestructible Parners of the previous generation, which were assembled in Europe and the USA. This is a fact, but the company now does not position itself as one of the leaders in the production of garden equipment as before. Of course, Partner is no longer the same, but nevertheless good in its segment. Don't forget about safety precautions and good work!

Instructions for chainsaw p340s

Instructions are supplied with all Partner p340s chainsaws, after reading which the user will receive maximum information on how to properly use the chainsaw, store and maintain it. Since the Partner Chainsaw is not intended for professionals, the instructions provide information on how to properly cut down trees to protect yourself from injury.

Also in the document you can find out what protective equipment and clothing should be used when working with a saw.