Chainsaw repair partner 350 do it yourself regulate the oil pump

In detail: repair of chainsaw partner 350 with his own hands adjusted the oil pump from a real master for the site my.housecope.com.

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 Partner 350 chainsaw

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 works that this model will cope with without problems. Despite the well-thought-out design and layout of the units, over time, wear of the power unit, transmission elements and fuel system occurs.

Experienced fellers know that a competent and accurate determination of the nature of a breakdown is half of 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.

Major chainsaw breakdowns Partner 350

It should start 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:

Chainsaw spark check;
Ignition coil;
Diagnostics of the fuel supply system;
Inspection of the crankshaft bearings.

To diagnose the presence of a spark, it is necessary to remove the candle 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 protrude beyond 0.7 to 1.2 mm.

Video (click to play).

Adjusting the spark plug gap with a feeler gauge

Failure to reach this distance can lead to incomplete combustion of the fuel mixture and, as a consequence, increased fuel consumption with limited power of the unit. As a result of exceeding this parameter, there is an inconsistency 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 spark plug and repeat the diagnostic manipulation described above.

If no discharge is observed on the replacement spark plug, 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, we 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; they must not dangle at the connection point. Moisture must not be present on the flywheel of the drive shaft as it interferes with the generation of an electromagnetic field.

Flywheel and ignition module of the Partner 350 chainsaw

In the absence of such inconsistencies, you must make sure that the clearance between the module and the flywheel is correct. Its value should be no more and no less than 0.2 mm, and therefore, if it does not coincide with the recommended distance, it is necessary to 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 turn to the diagnosis of the fuel supply system.

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

Carburetor Partner 350 disassembled

If the mixture does not flow from the tank, it is necessary to inspect the built-in filter and breather (hole in the lid). If the fuel filter becomes clogged, it will need to be replaced. To clean the breather, you can use an ordinary sharp needle, carefully removing the remnants of dirt and sawdust from the valve. If the carburetor becomes 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. Its work begins with the jerk of the saw starter, which forces the membrane to pump fuel. After that, a diaphragm-controlled needle valve supplies gasoline to the main chamber, through which it enters the cylinder. The throttle valve can be used to "enrich" or "lean" the fuel mixture with air. When it is closed, less air will flow into the cylinder at the same fuel level. In this case, consumption will increase, coupled with a decrease in engine power. Therefore, the adjustment of the Partner 350 chainsaw plays an important role in creating an optimal balance of moderate fuel consumption with high tool performance.

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

Before starting adjustment work, it is necessary to clean the main fuel unit from dust and dirt. To do this, you can use a compressor with compressed air or a broom 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, turn the screws of the fuel quantity and quality fully clockwise until they stop, loosening them after 1/5 ... ¼ turn.

Partner 350 chainsaw carburetor with adjustment screws

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

- "L" - screw for the amount of fuel (adjustment at low speed);

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

- "T" - idle speed 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, turn the screw "L" until the internal combustion engine produces the maximum crankshaft speed. Then we twist it a quarter of a turn. It is worth noting that in this position, the screw for the amount of supply of the mixture should support the operation of the motor at idle. If such a setting is not enough, then boldly unscrew the “T” bolt until the engine runs stable. Using the screw "H" we correct the work of the Partner chainsaw at maximum speed.

An important factor in the correct operation of the engine is played by the bearings and oil seals of the crankshaft.

Crankshaft Partner 350 with bearings

To diagnose their wear, it is necessary to stagger the flywheel installed on the shaft in the vertical and horizontal plane. If there is an obvious backlash, it is necessary to replace the rolling bearings. If there are oily traces on the crankcase, then the oil seals will also need to be replaced. It will not be superfluous to check the play of the Partner 350 crankshaft, for which we remove the cylinder and piston. With the help of our hands, we swing it to the left and right, thereby imitating the natural movement.

Despite some difficulties in repairing a Partner 350 chainsaw with their own hands, the owners of these units, before handing over the tool to specialized centers, try to restore their working capacity on their own. After all, most problems can be eliminated with ordinary locksmith tools and with basic experience in the repair of mechanical components.

Chainsaw malfunctions and repairs Partner 350 do it yourself

Chainsaw Partner 350 is one of the most common petrol saws. Very often, their owners ask questions about how to fix Partner 350. After reading the article, you will learn the answers to questions about how to diagnose malfunctions in Partner, also about how to remove them without the help of others.

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Correct determination of the malfunction is already more than half of the repair. In case of defects associated with the fact that the saw does not start, the essence of the diagnosis is to check for a spark and the presence of fuel in the cylinder, since there is nothing to burn in the chainsaw, or there is nothing to ignite.

To check the spark, you need to unscrew the candle, install it in the cap of the high-voltage wire and attach it to the cylinder (there must be a mass on the candle). Further, pull the starter a couple of times, with all this gazing at the candle. There will be no spark if the chainsaw Partner 350 faults such as:

defective candle (can only be eliminated by replacing it with a pre-serviceable one);
broken wires in the system;
malfunction of the ignition control button;
defective ignition coil;
lack of a gap between the coil and the flywheel;
breakage of the key between the crankshaft and the flywheel.

The first sign that the cylinder is not getting fuel is a dry spark plug. Having found a dry candle, the next thing to do to more clearly determine the malfunction is to test start the chainsaw Partner 350 fill in the cylinder, through the plug hole, less than 5 ml of gasoline. If chainsaw after which it does not start, then most likely there is no compression in it or it is not enough to implement the start of the motor. Prerequisites:

CPG wear;
thermal blockages of the cylinder or piston;
bully due to the ingress of a foreign body into the CPG.

If, after the gasoline has been poured under the candle, the saw started up, then there is a problem in the carburetor or in the Partner's fuel line 350. It is necessary to carry out a complete diagnosis of the fuel system.

When diagnosing the chainsaw, you need to check the bearings for free play crankshaft... To do this, you need to shake the flywheel up and down. If there is any play, the bearings must be replaced.

Also do not forget to check the connecting rod play. crankshaft... To do this, the piston must be locked in the upper position and little by little the flywheel must be swayed from left to right, imitating its natural movement. If there is play, then the crankshaft Partner 350 to be replaced.

In order to disassemble Partner 350 will require several specific tools:

Clutch wrench (you can buy or make yourself from a head of a suitable size).
Piston stopper.
Torx hexagon set.
Soft metal drift.

For ease of disassembly Partner 350 will need tweezers and a medical clamp. From ordinary tools, you need to have a screwdriver or a cordless drill with a set of attachments, a hammer.

If you need to completely disassemble the chainsaw Partner 350, the first thing disassembly begins with is cleaning the saw with a compressor. Further, the chainsaw units are removed in the following order:

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

After the first stage of disassembly is over, we re-clean the chainsaw with a compressor, since there is already access to the air ducts, which in most cases are heavily contaminated with wood dust.

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

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

The muffler can be removed either immediately after the carburetor has been removed, or after the engine has been removed. The outlet window is also closed with a rag.

Next, the clutch and flywheel are removed.

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

Clutch on all chainsaws Partner 350 is unscrewed in the direction of movement of the chain, this is done so that it does not unwind during operation. The flywheel nut has a standard thread and is unscrewed with a head 13, counterclockwise.

After removing the clutch, access to the oil pump appears, it must also be removed.

At the last stage, you need to unscrew the screws of the engine and remove it from the case.

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

In this video we will take a closer look at the moslon pump chainsaw partnerlet's find out why chainsaw partner not.

repair chainsaws Partner P350 XT. replacement drive sprocket.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 punch installed on the nut, with one sharp blow, the flywheel is removed from the shaft.The method is a bit barbaric, but time-tested and recommended by many masters as the most practical and reliable.In order to properly assemble Partner 350, it is necessary to install all elements in the reverse order of removal.If this is your first time with a chainsaw repair Partner 350, then when disassembling, put the parts in the order in which they were removed. This will prevent you from getting confused and not forgetting to install any node.

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An important feature of the engine assembly Chainsaw Partner 350 is that the crankcase cover is installed without a gasket. Instead, a red sealant is used, which is applied in a thin layer to the crankcase installation site. Before applying the sealant, it is necessary to degrease the crankcase cover and the place of its installation, for better adhesion of the sealant.During assembly Chainsaw Partner 350, if not only the flywheel was removed on it, but also the ignition coil, a gap must be set between them. To do this, first a flywheel is installed, then a piece from a 1.5-liter plastic bottle is placed on it, and then a coil is placed and fixed with two mounting screws, while the flywheel must be turned to the coil with magnetic contacts.After adjusting the clearance, turn the handwheel. If it does not touch the coil contacts, then the gap is set correctly.If it is necessary to replace the cylinder and piston of the chainsaw Partner 350, it must be disassembled according to the algorithm described above. The piston is fixed at the top of the connecting rod crankshaft using the piston pin. A cage with roller bearings is installed between the pin and the connecting rod.To replace the piston and cylinder, it is necessary to remove the piston from the cylinder and remove it from crankshaft, for this, on one side of the piston, using pliers and a small screwdriver, the piston pin stopper is removed. Image - Repair of chainsaw partner 350 do it yourself regulate the oil pump

Then, from the opposite side, it is squeezed out using a small screwdriver. If the pin comes out tight, it can be slowly knocked out with a hammer and a punch, suitable in size, but smaller than the diameter of the bore of the piston pin.

The new piston is mounted on the crankshaft so that the arrow on the piston cover points in the direction of chain movement.

To check the correct installation, you need to take the crankshaft with the piston installed on it in such a way that the shaft on which the flywheel is installed is in your left hand, while the arrow should look away from you.

After the new piston is mounted on the crankshaft, a ring is installed on it, after which the piston is inserted into the cylinder, while the parts must be lubricated with engine oil, which will not break the ring and facilitate the process. Next, the crankcase is installed.

The service center masters use the piston group replacement algorithm, which allows work to be carried out without complete disassembly Chainsaw Partner 350. How does this happen replacement you can watch the video.

In a chainsaw Partner 350, as in other chainsaws, there are two breathers. One is responsible for equalizing the pressure in the oil tank, the second - in the fuel tank. The oil tank breather is installed next to its cap, and a special disposable metal plug is installed on top of the breather, allowing air to pass through.

Fuel tank breather Partner 350 is located in the area where the carburetor is installed, like the previous one, closed with a plug.

Tip: The breathers must be replaced when a vacuum builds up in the tanks and the supply of fuel and oil stops.

Chainsaw oil pump repair Partner 350 is required if the oil supply is completely or partially cut off. The oil pump mechanism includes itself pump and a worm gear driven by a clutch sprocket.

The most common failure of an oil pump is a lack of threads and splines on a gear or splines on a worm gear. The situation can be corrected by replacing parts with new ones.

To remove the oil pump on Partner 350, you need to remove the side cover and the tire of the chainsaw, then lock the piston and use a special key or a homemade key from the 24 head to unscrew the clutch.

The clutch has a high tension torque, therefore it is necessary to use a knob and turn it strictly clockwise. Do not try to spin the clutch with a hammer and chisel, this often leads to a breakdown of the mechanism, and also badly affects the condition of the bearings. crankshaft.

To replace the drive sprocket Partner 350, you just need to unscrew the clutch, remove the old part and install a new one. The sprocket is mounted on the shaft through a needle bearing. When replacing the sprocket, it must be checked for defects and lubricated. For lubrication, you can use regular Litol or any other that can withstand high speeds.

The process of replacing the leading sprocket is shown in the video, after watching which you can easily repeat what you saw on your chainsaw.

Partner 350 has popular faults that the owners of these saws can diagnose and fix on their own. Let's take a closer look at popular malfunctions and DIY repair methods.

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

Tip: If chainsaw stalls with increasing speed, do not immediately adjust the carburetor. Start by checking the engine for foreign air leaks. One of the signs of air leakage is increased idle speed.

If Partner 350 starts up and immediately stalls, then, as in the previous case, there can be several reasons, but the most common is the difficult fuel supply. It is worth starting 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 with a new spark plug, as the saw may stall due to interruptions in sparking.

It is also necessary to check the draft of the choke.If it does not open the choke or does not open fully, then the engine can stall from excessive fuel enrichment.

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

Break in the oil line.
Clogged oil filter.
Worm drive gears defective.
Line or pump blockage.

How to solve the problem of the oil pump is described above.

A very common problem that owners have to face Partner 350. The first place to start checking is replacement the candles are known to be in good working order. If it does not 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 on Partner 350 are on our website.

Partner 350 is not a bad household chainsaw, which is quite possible to repair yourself. For a correct repair, you need to know the algorithm by which the disassembly takes place. Have the necessary tool and understand how the given chainsaw... If you are not confident in your abilities, we advise you to contact the service center.

Chainsaw malfunctions and repairs 350 partner's own hands

Chainsaw Partner 350 is one of the most common petrol saws. Very often, their owners ask questions about how to repair Partner 350. After reading the article, you will learn the answers to questions about how to diagnose problems in a Partner, as well as how to solve them yourself.

IMPORTANT. An experienced electrician has poured into the network the secret of how to pay for electricity in half, in a legal way. Read more

Correct determination of the malfunction is already more than half of the repair. In the event of malfunctions due to the fact that the saw does not start, the essence of the diagnosis is to check the spark and the presence of fuel in the cylinder, since there is nothing in the chainsaw to burn or nothing to ignite,

To check the spark, you must unscrew the spark plug, install it in the cap of the high-voltage wire and attach it to the cylinder (there must be a mass on the spark plugs). Then pull the starter motor several times while carefully looking at the spark plug. There will be no sparks if there are malfunctions in the Partner 350 chainsaw, such as:

defective candle (excluded only by replacing it with a known good);
broken wires in the system;
malfunction of the ignition control button;
faulty ignition coil;
lack of a gap between the coil and the flywheel;
breakage of the key between the crankshaft and the flywheel.

The first sign that a cylinder is not receiving fuel is a dry spark plug. With a dry plug open, the next thing you need to do to more accurately pinpoint the problem is to try and fire your partner's 350 nozzles into the cylinder through the plug hole, no more than 5 ml of gasoline. If the chainsaw does not start, then most likely there is no compression in it or it is not enough to start the engine. Causes:

processor wear;
thermal grip of the cylinder or piston;
Biting due to foreign body penetration into the GPG.

If the saw is started after the spark plug has been filled with gasoline, then the problem is the carburetor or fuel line of the partner 350. A full fuel system diagnosis must be performed.

After diagnosing the chainsaw, it is necessary to check the crankshaft bearings for the presence of a game. To do this, the flywheel must be extended up and down. If there is any play, the bearings need to be replaced.

Also remember to check the crankshaft travel. To do this, the piston must be fixed in the upper position and gradually push the flywheel from the left to the right, simulating its natural movement. If there is any play, the Partner 350 crankshaft must be replaced.

To disassemble Partner 350, you will need several special tools:

Clutch key (can be purchased or made from a suitable head).
Piston stop.
Torx hexagon set.
Soft metal hammer.

Partner 350 will need tweezers and a medical clamp for easy disassembly. From ordinary tools, you need to have a screwdriver or a cordless drill with a set of attachments, a hammer.

If you need to completely disassemble your Partner 350 chainsaw, the first step to dismantling is to clean the saw with a compressor. The chainsaws are then removed in the following order:

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

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

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

After removing the carburetor, the inlet window of the cylinder should be clogged with rags to protect against foreign objects entering the crankcase.

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

Then the clutch and flywheel are removed.

To do this, it is necessary to apply the piston plug by placing it in the spark plug hole.

The clutch on all Partner 350 chainsaws is unscrewed along the chain so that it does not unwind during operation. The flywheel nut has a standard thread and is unscrewed with a head 13 counterclockwise.

After removing the coupling, access to the oil pump appears; it must also be removed.

In the last step, you need to unscrew the screws of the motor and remove it from the case.

You will need a special puller to remove the flywheel, but most craftsmen use a soft metal knockout as it speeds up the removal process significantly.

The bottom line is that the flywheel nut is twisted until it is equal to the plane of the shaft, and then the flywheel is removed from the shaft using a hammer and hammer mounted on the nut, with one sharp blow.

In this video, we take a closer look at the power pump. chainsaw partner, find out why chainsaw partner not.

Short review: oil pump on the chainsaw manufacturer .The method is a bit barbaric, but time-tested and recommended by many masters as the most practical and reliable.To properly reassemble Partner 350, all elements must be installed in reverse order for removal.If this is your first time repairing a Partner 350 chainsaw, disassemble the parts in the order in which they were removed. It won't get confused and don't forget to install any node.An important feature of the Partner 350 engine assembly is that the crankcase cover is installed without a gasket. Instead, it uses a red sealant that is applied thinly to the crankcase installation site. Before applying the sealant, it is necessary to degrease the crankcase cover and the place of its installation for better adhesion of the sealant.

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During the assembly of the Partner 350 chainsaw, if it was removed not only with the flywheel, but also with the ignition coil, you need to set the gap between them. To do this, first install the flywheel, then a piece of a 1.5-liter plastic bottle is placed on it, and then the coil is installed and fixed with two mounting screws, and the flywheel should rotate onto the coil with magnetic contacts.After adjusting the clearance, turn the handwheel. If it does not touch the coil contacts, the gap is set correctly.If it is necessary to replace the cylinder and piston of the Partner 350 chainsaw, it must be disassembled in accordance with the algorithm described above. The piston is fixed at the top of the crankshaft connecting rod with a piston pin. There is a roller bearing cage between the pin and the connecting rod.To replace the piston and cylinder, it is necessary to remove the piston from the cylinder and remove it from the crankshaft; for this, on one side of the piston using pliers and a small screwdriver, the piston pin stopper is removed. Image - Repair of chainsaw partner 350 do it yourself regulate the oil pump

Then, from the opposite side, it is squeezed out with a small screwdriver. If the pin comes out tightly, it can be slowly knocked out with a hammer and knockout that is the right size but smaller than the pin bore of the piston pin.

The new piston is mounted on the crankshaft in such a way that the arrow on the piston cover is clamped in the direction of travel of the chain.

To check the correct installation, you need to take the crankshaft with the piston installed on it, so that the shaft on which the flywheel is installed is in your left hand, and the arrow should look away from you.

After the new piston is installed on the crankshaft, a ring is installed on it, after which the piston is inserted into the cylinder, and the parts must be lubricated with engine oil, which will prevent the ring from breaking and facilitate the process. Then the crankcase is installed.

The technicians of the service centers use the algorithm of replacing the piston group, which allows them to work without completely disassembling the partner 350's chainsaw. How this replacement can be viewed in the video.

The Partner 350 chain saw, like other chain saws, has two breathing apparatus. One is responsible for equalizing the pressure in the oil tank, the second for the fuel tank. The oil reservoir-breather is installed next to its lid, and on top of the chimney there is a special disposable metal plug that allows air to pass through.

The Partner 350 fuel tank is located in the carburetor installation area, since the previous one is closed with a lid.

Recommendations: The reagent should replacewhen a vacuum is created in the tanks and the supply of fuel and oil stops.

Repair of the oil pump on the Partner 350 chain saw is necessary in the event of a complete or partial shutdown of the oil supply. The oil pump mechanism includes the pump itself and a worm gear that is driven by a sprocket in combination with a clutch.

The most common failure of an oil pump is the lack of threads and splines on the gear or slots on the worm gear. You can remedy the situation by replacing the parts with new ones.

To remove the oil pump on Partner 350, you need to remove the side cover and chain saw, then fix the piston and use a special wrench or a homemade wrench from the 24 head to unscrew the clutch.

The clutch has a high tightening torque, so you need to use wrenches and twist strictly clockwise. Do not try to untwist the clutch with a hammer and chisel, this often leads to damage to the mechanism, and also badly affects the condition of the crankshaft bearings.

To replace the Partner 350 drive sprocket, you simply need to unscrew the clutch, remove the old part and install the new one. The sprocket is mounted on the shaft through a needle bearing. When replacing the sprocket, check for defects and lubricate with oil. For lubrication, you can use a regular lithol or any other high-speed engine.

The process of replacing the guide sprocket is shown in the video, after which you can easily repeat what you saw on your chainsaw.

The Partner 350 has a popular bug that owners of these saws can diagnose and fix on their own. Let's take a closer look at popular faults and how to repair them with our own hands.

If partner 350 stops when pressing the gas, then most likely there is a problem with the fuel system. The most common failure is a misaligned or malfunctioning carburetor and foreign air intake.

Advice. If the chain saw stops at increasing speed, do not immediately adjust the carburetor. Start by checking the engine for air intake. One of the signs of air intake is an increase in idle speed.

If partner 350 starts and stops immediately, then, as in the previous case, there may be several reasons, but the most common is a difficult fuel supply. To begin troubleshooting, it is necessary to check the condition of the fuel filter and lines. If the fuel is flowing normally, then check the spark and try starting the chainsaw with a new spark plug, as the saw may stall due to sparks with sparkling light.

Also check the choke draft.If it does not open the throttle or open fully, the engine may stall due to excessive fuel enrichment.

There are several reasons for the lack of lubricant supply to the Partner 350 chainsaw, in which case we can list them all.

The oil line breaks down.
Contaminated oil filter.
Defective worm drive.
Blocking of the main or pump.

How to solve oil pump problems is described above.

A very common problem faced by 350 partner owners. The first thing to check is replacing the candle with a known boon. If that doesn't help, the spark is good, but the engine is flooded, the reason is hidden in the carburetor settings. Instructions for diagnosing and adjusting the carburetor on the Partner 350 can be found on our website.

Partner 350 is not a bad household chain saw that can be repaired. For a correct repair, you need to know the algorithm by which the disassembly takes place. You have the right tool and understand how this chainsaw works. If you are unsure of your abilities, we recommend that you contact the service center.

For people engaged 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 quality Swedish chainsaw "Partner 350", which is an excellent substitute for other tools for cutting 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 exploitation. At the same time, contacting qualified specialists with a request to fix a chainsaw costs money, which you may not want to spend for any reason, because you understand that you can fix most of the faults and breakdowns yourself. To do this, you need to understand the structure of the chainsaw and watch a video where you will receive detailed instructions for repairing the Partner 350 chainsaw.

The vast majority of product malfunctions occur due to engine problems and related systems. Usually, to repair the unit, it should be disassembled. In order not to make a mistake during the disassembly process, read more about the design of the chainsaw in the video or operating instructions.

When your chainsaw won't start, you should first see if are the candles in good working order, giving a spark, due to which the fuel ignites and by force of an impulse pushes the piston, which does useful work.

In order to assess the condition of the spark plug, you need to remove the wire leading to it from the starter and unscrew it using 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 inability of the fuel to penetrate into the cylinder and begin to carry out useful work on the rotation of the chain, therefore the chainsaw will not start... The reasons for this are as follows:

The fuel filter is out of order because it is clogged.
The breather is clogged (this is the name of the hole made by the manufacturer in the gas tank and designed for air to enter the tank through it).
Lack of fuel in the gas tank.
The diaphragm in the carburetor is not complete, or there is a high probability of blockage in the carburetor passages.
Carburetor adjustment is not correct.

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

Did you find that the carburetor is the root cause of your problems? The good news here is that if your carburetor filter gets clogged, you can easily clean it yourself. In addition, you can easily do the adjustment and tuning of 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 cope with your own hands, 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 do not understand the device of the product do not try to fix the malfunction on their own if the chainsaw suddenly stops starting and, as a result, does not completely break the unit.

To the main breakdowns of this system chainsaws include:

Low pressure detected by the cylinder compression gauge, which causes the motor to lose power and cannot rotate the chain at the speed necessary to cut wood efficiently. The pressure at which the engine runs smoothly is approximately nine atmospheres.
Loss of 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 slots in the gasket and the pressure drop in the engine. The problem is solved by replacing the gaskets.

If you want to know if there are problems in the cylinders, then the easiest way to do it is remove the muffler and assess the situation, looking through the hole left over from the removed muffler at the insides of the cylinders. In the event of the need for repairs, of course, you will need to remove the cylinder head for open access to the pistons and cylinders.

Sometimes, having accelerated your chainsaw to high engine rpm, 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 revs.

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

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

Video (click to play).