Chainsaw partner p340s do-it-yourself repair

Question: I decided to work with a Partner 340 s chainsaw. About 20 days, 7-8 hours a day.

The frosts were hard. There are no complaints about the winding and the engine, but the chain lubrication has disappeared. What to do?

Answer: It is very likely that if the oil was thick, the oil pump drive was torn off.

It’s as if it should be a weak point in the drive just in case - either a worm or a gear on a plunger, but it’s not good to do it weakly to such an extent.

You need to remove the clutch, remove the pump and look. Or to a service.

Question: On the 3rd day of operation, the transmission mechanism failed, i.e. the motor is running, but the chain is not spinning, as it is at idle. What's the problem? Some kind of gear went off?

Saw Partner p340s, sawed firewood. I took off the box, there is a drum, under which the asterisk hangs. Maybe marriage? I twist the chain by hand, the sprocket rotates, it is not movable inside, the drum itself is also not movable.

In the assembled and wound state and the brake is raised, the chain does not rotate either at low gas or at full throttle, there is no clutch.

Answer: So the asterisk has soldered off the drum. Surely a factory defect, only the leading sprocket is classified by manufacturers as a consumable, many even clearly indicate this in the passport for the saw.

Question: Such a problem with the Partner p340s chainsaw - I press the gas and it happens that the failure occurs, as if the mixture is not enough, but the tank is full.

The mixture was made 40: 1, oil 2t, turn asset partner, pink, gasoline 92nd. The saw is new.

I saw the board at low speeds and it can stall. And the oil from the chain flows when it is just idle.

Answer: The carburetor is most likely out of adjustment.

Question: The Partner 340 S chainsaw is in operation. It stopped starting at all. In operation for a little over 2 years.

At first it started up intermittently, but each time it started up. Now you won’t start it at all - the maximum that you can do is pull the handle, start the engine for a couple of seconds and immediately stall, after which it won’t start anymore.

I changed the candle - there was almost no difference (the old spark was noticeably worse), except that it began to catch at least the first time.

After you pull the winding handle several times, the candle becomes damp, after drying it is possible to start it only for 1-2 seconds, after which it fills the candle again.

Tried blowing out the carburetor, no change. What else can you see?

Answer: start by removing the muffler. There it is quite simple. In the exhaust port, inspect the condition of the piston. If you see longitudinal grooves, everything is a piston replacement.

Question: the piston is pulled together right on the body itself, when assembling the Partner 340s chainsaw, are there any nuances or not?

Answer: when you put a bearing with an oil seal on the clutch side on the crankshaft, you need to gently twist it to the left - to the right and look so that the inside of the oil seal does not wrap, the so-called. lip.

If the spring pops out, the saw will not work. You can use a thin screwdriver to correct the lip on the edge of the crankshaft, only carefully, and lightly lubricate the crankshaft and the lip of the stuffing box with gasoline oil.

Question: what can be? Sawed with a chainsaw Partner 340 minutes 15, stalled and did not start, only seized and stalled, then stopped seizing, removed the air filter, started up, but also did not work smoothly.

The saw is new, burned only a couple of liters, working not very long. Idling seems to be normal, it only floats, this is annoying.

Could it have been overheating? I'm sawing at maximum speed, I don't hold it at idle for a long time. How to check piston?

Answer: It's not very good that it floats. Idling on a working saw should be - a watch, especially on a new one.

Remove the muffler - it's very easy there, and look at the piston and cylinder. There should be no longitudinal scratches or abrasions.

If the piston is in order, you can (if you have at least some skills) try to deplete L a little by turning it slightly clockwise.

Question: I bought a Partner p340s chainsaw, cut 3-4 trees with it, and the saw started to stall at idle. That is, when you give gas, it starts to work with a small dip.

As soon as you let off the gas, it runs for about 30 seconds and stalls. The mixture was prepared as
given according to the instructions. Tell me, who faced this?

Answer: The idle speed screw T on the carburetor should be slightly to the right in a clockwise direction. If there are further failures, the screw L must be slightly unscrewed (against the arrow). Screw H do not touch.

It is best to have a master do it. poor winding is associated with screw L, it is poor. Failures are also due to this.

It happens that you start the saw, it warms up, it idles. You sharply press the gas, the saw seems to choke, trying to stall (stalls). When pressed gently, the engine accelerates. this is failure.

Turning screw L - you add gasoline at idle. And feel
this is possible - with a sharp pressure on the gas, the saw picks up speed without failure.

If it works fine on gas, then screw T has no results - try turning L counterclockwise, a little bit.

Spin 1/12 1/6 wait 15 seconds, spin wait. until there is a failure in the re-gassing.

Question: the Partner 340S chainsaw without a freewheel, when trying to find it, it turned out that the clutch with a left-hand thread and a diameter of 8 and 10 is on sale. And on the crankshaft it looks like 9, since it doesn’t screw on 8 at all, but flies along the thread on 10.

The thread on the crankshaft is not broken 100%. Who will help and advise?

Answer: Apparently, the clutch is meant. The logic here is simple - since the commercially available ones do not fit your saw, then they are from other models and you need to look for clutch from the 340S model.

It is possible that it will be possible to pick up an analogue from another saw, but most likely it will not fit in terms of outer diameter, or width, or reach, or spring stiffness.

Question: I bought and tested a Partner 340 s chainsaw. The build quality is not bad, although I didn’t like the chain tension scheme (I unscrewed the tire nuts, and only then you screw in the tension screw, its work is also a little slow); plastic is quite dense; everything starts up fast.

But, there are some doubts about the power when working with this saw, namely: you press the gas lever, and it, at times, reluctantly gains momentum, hence the stops in the cut itself, which is why you have to take it out of the cut, do a little re-gassing and continue sawing .

Does it sound more like a carburetor adjustment? Or is it something else?

Blend: last year's 92+ 1 year old husquarna oil (not critical, I guess), 1:47 ratio (break-in period). So far managed to burn 1, 5 tank of fuel.

Answer: You need 1:35, only semi-synthetic oil. The method has been tested, and in the case of good gasoline, it will not be worse either.

For people involved in construction or logging, as well as living in their own living quarters with an adjacent plot of land, it will be very useful to own a high-quality Swedish Partner 350 chainsaw, which is an excellent substitute for other tools for sawing wood, for example, two-handed saws or hacksaws .

Like any other units, chainsaws also require careful maintenance and periodic maintenanceOtherwise, they will quickly break down as a result of operation. At the same time, asking qualified professionals to fix your chainsaw costs money, which you may not want to spend for whatever reason, since you understand that you can fix most of the malfunctions and breakdowns yourself.To do this, you need to understand the device of the chainsaw and watch the video, where you will receive detailed instructions for repairing the Partner 350 chainsaw.

The vast majority of product failures occur due to engine problems and related systems. Usually, to repair the unit, it is necessary to disassemble it. In order to avoid mistakes during the disassembly process, read more about the design of the chainsaw in the video or instruction manual.

When your chainsaw won't start, the first thing to look at is are the spark plugs correct?, giving a spark, due to which the fuel is ignited and the force of the impulse pushes the piston, which performs useful work.

In order to assess the condition of the candle, you need to remove the wire going to it from the starter and unscrew it with a suitable key from the groove. Examine the candle: its appearance will tell you what happened to the chainsaw:

The consequence of such malfunctions is the impossibility of fuel to penetrate into the cylinder and begin to carry out useful work on the rotation of the chain, therefore chainsaw won't start. The reasons for this are as follows:

1. The fuel filter failed due to the fact that it is clogged.
2. The breather is clogged (this is the name of the hole made by the manufacturer in the gas tank and designed to allow air to enter the tank through it).
3. Lack of fuel in the gas tank.
4. The membrane in the carburetor is not intact, or there is a high probability that there is a blockage in the carburetor channels.
5. Carburetor adjustment not done properly.

To determine if the breather or filter is clogged with foreign objects, you will need to disconnect from the attachment points fuel hose and see if gasoline flows from it and with what pressure. If gasoline flows out slowly and weakly, then clean the breather with a thin, sharp object, such as an awl. If the problem is with the filter, then remove it from the tank where the fuel is stored and clean it and, if necessary, replace it.

Have you discovered that the cause of your problems lies in the carburetor? The good news here is that if the filter on your carburetor gets clogged, you can easily clean it yourself. In addition, you can easily adjust and adjust the carburetor of the Partner 350 chainsaw with your own hands if you strictly adhere to the recommendations from the instruction manual.

The bad news is that with other, more complex carburetor repairs, you are unlikely to do it yourself, and you will have to take your unit to the mechanics. Sometimes the manufacturer deliberately does not write in the instructions, how to tune and repair a carburetorso that people who are not versed in the design of the product do not try to fix the problem on their own if the chainsaw suddenly stops starting, and as a result, do not break the unit completely.

To the main breakdowns of this system chainsaws include:

• Low pressure detected by a compression gauge in the cylinders, causing the motor to lose power and not be able to rotate the chain at the speed necessary to cut wood efficiently. The pressure at which the engine operates without failure is approximately nine atmospheres.
• Violation of the tightness of the rings in the pistons, due to which hot gases from the cylinders enter the crankcase. The malfunction is eliminated by replacing the rings.
• Problems with the tightness of the gaskets located in the cylinder head (cylinder head). Visually expressed in the form of emissions of gasoline combustion products through the gaps in the gasket and a pressure drop in the engine. The problem is solved by replacing the seals.

If you want to find out if there are problems in the cylinders, then the easiest way to do this is remove the muffler and assess the situation, looking through the hole left from the removed muffler, at the inside of the cylinders. In the event of a need for repair, you will, of course, need to remove the cylinder head for open access to the pistons and cylinders.

Sometimes, when you run your chainsaw to high engine speeds, you are surprised to find that the engine cannot cope with them, and your tool stalls. At the same time, smoke begins to pour out of the muffler. However, the motor runs easily at low speeds.

In this case, it is highly likely that the muffler of your unit clogged with soot and other products of incomplete combustion of fuel, so it must be cleaned. This work is done as follows: you will need to remove the silencer from the chainsaw and disassemble it; then clean its outer and inner surface from carbon deposits; in the last step, dry with a hair dryer and install on a chainsaw.

Note that it is recommended to cover the muffler opening with a plug or rag to avoid clogging the cylinders with debris.

Among the huge selection of models on the modern construction market, the Partner 350 chainsaw stands out, which is produced by a subsidiary of Husqvarna.

General view of the chainsaw Partner 350

Simple and easy to use, reliable and unpretentious, this saw has gained wide popularity among summer residents and owners of country houses. Sawing firewood, pruning trees and branches - this is not the whole list of jobs that this model can handle without problems. Despite the well-thought-out design and layout of the units, over time, the power unit, transmission elements and fuel system wear out.

Experienced fellers know that a competent and accurate determination of the nature of the breakdown is half the repair work done. Based on many years of experience in repairing the partner 350 chainsaw, specialists have developed a special method for diagnosing problems.

The main breakdowns of the chainsaw Partner 350

It is worth starting from the simplest nodes and mechanisms, ending with more complex ones.

This allows you to significantly save time and avoid unnecessary operations. Troubleshooting is recommended in the following order:

1. Chainsaw spark test;
2. Ignition coil;
3. Diagnostics of the fuel supply system;
4. Inspection of crankshaft bearings.

To diagnose the presence of a spark, it is necessary to remove the spark plug and, without removing the high-voltage cable, make several jerks with the starter. If there is a discharge, you will need to set the gap between the central and side electrodes. Its value in Partner 350 should not exceed the limits from 0.7 to 1.2 mm.

Adjusting the spark plug gap with a feeler gauge

Lack of this distance can lead to incomplete combustion of the fuel mixture and, as a result, increased fuel consumption with a limited power unit. As a result of exceeding this parameter, there is an inconstancy in the occurrence of a spark and interruptions in the operation of the internal combustion engine.

If there is no spark on the electrodes, it is necessary to replace the candle and repeat the diagnostic manipulation described above.

If a discharge is also not observed on the replaceable candle, it is necessary to check the integrity of the high-voltage wire and, if necessary, replace it.

The absence of a bright blue spark in the plug may indicate the need to inspect the ignition module and adjust the gap. For these purposes, remove the plastic protective cover from the saw and check the condition of the coil. The wires leading to it must be firmly fixed with screws and must not hang out at the junction. Moisture must not be present on the flywheel of the input shaft, as it interferes with the electromagnetic field.

Flywheel and ignition module of the Partner 350 chainsaw

In the absence of such discrepancies, it is necessary to make sure that the gap between the module and the flywheel is correctly set. Its value should be no more and no less than 0.2 mm, and therefore, if it does not match the recommended distance, you must independently adjust the ignition of the Partner 350 chainsaw.

For the most accurate adjustment, you need a regular coin-shaped or flat probe, which you can buy in specialized or automotive stores.

After checking the ignition, we proceed to the diagnosis of the fuel supply system.

An important influence on the correct operation of the saw is played by the fuel system, consisting of a gas tank, pipes and a carburetor.

Carburetor Partner 350 disassembled

If the mixture does not come out of the tank, it is necessary to inspect the built-in filter and breather (hole in the lid). If the fuel filter is clogged, it will need to be replaced. To clean the breather, you can use an ordinary sharp needle, carefully removing the remaining dirt and sawdust from the valve. If the carburetor is clogged, it will need to be dismantled and thoroughly cleaned.

It must be remembered that the partner chainsaw carburetor is a complex assembly consisting of many small parts. Therefore, when dismantling, cleaning and assembling, maximum attention is required.

The carburetor is used to mix the fuel mixture (oil and gasoline) with air. His work begins with the moment the starter of the saw jerks, which forces the membrane to pump fuel. After that, a diaphragm-controlled needle valve delivers gasoline to the main chamber, through which it enters the cylinder. By means of the throttle valve, it is possible to “enrich” or “deplete” the fuel mixture with air. When it is closed, less air will enter the cylinder at the same fuel level. In this case, the consumption will be increased, coupled with a drop in engine power. Therefore, the adjustment of the Partner 350 chainsaw plays an important role in creating the optimal ratio of moderate fuel consumption with high tool performance.

It is recommended to make self-configuration only if you have special tools and skills.

Before starting adjustment work, it is necessary to clean the main fuel assembly from dust and dirt. To do this, you can use a compressed air compressor or a carpentry brush.

To adjust the carburetor, holes are provided on the left side of the power unit, however, for the convenience of determining their position, experts recommend dismantling the protective plastic casing. First, we tighten the screws for the quantity and quality of fuel clockwise to the stop, loosening them after 1/5 ... ¼ of a turn.

Partner 350 chainsaw carburetor with tuning screws

When the cover is dismantled, you need to know that the fuel mixture quality screw is on the right and, accordingly, the gasoline amount adjustment screw is located on the left. For convenience, the carburetor body under the bolts is marked:

- "L" - fuel amount screw (adjustment at low speeds);

- "H" - mixture amount screw (setting at maximum speed);

- "T" - idle adjustment bolt.

It must be remembered that the adjustment of the carburetor of the Partner 350 chainsaw must be carried out on a warm engine. At high temperatures, the metal expands linearly, as a result of which the throughput of the channels increases.

As soon as the cylinder becomes warm, we tighten the “L” screw until the internal combustion engine gives out the maximum speed of the crankshaft. Then twist it a quarter of a turn. It is worth noting that in this position the screw for the amount of mixture supply must maintain the engine at idle. If such a setting is not enough, then boldly unscrew the “T” bolt until the engine runs stably. Using the “H” screw, we correct the operation of the Partner chainsaw at maximum speed.