Connecting a primer to the carburetor of the Partner 350 chainsaw

Chainsaw Partner 351 carburetor repair

We have quality spare parts! a chainsaw muffler and a Piston group Partner 351 XT, you have the opportunity to select and purchase on the domestic website. Chainsaw repair is a very common disease of the seals. For flawless and long-term operation of the chainsaw, it is sometimes required to adjust its carburetor. fixtures and DIY machines: First machines Photos of dilapidated machines Videos of simple machines Racks and guides for a drill Universal machine from a drill Circular drunk from a drill Lathe Lathe with a foot drive Drilling machine from a drill Drilling machine for boards Drilling machine Drill speed control Drill bits Jigsaw.machine Desktop jigsaw with an eccentric Jigsaw from a manual jigsaw Belt sander from a drill Variator for a machine Connecting a three-phase motor to a single-phase network Attachment for milling thorns Belt sander Belt drank Circular from a hand circular saw Polishing machine from a drill pulley Simple gear for the machine Home-made workbench Milling table Manual sheet bender Home-made pipe bender Converting rotary motion into rectilinear Type of gear Application of automotive putty Tachometer from a voltmeter and motor Furnace for melting aluminum Modern machines for home workshops and work on them: Lathe Drilling machine Circular machine Jointing machine Jigsaw Band sawing machine Radial cantilever drank Work on a lathe Cutter Work on a circular machine Work on a jigsaw and band saws Manual power tools: Drill Drill device Drill repair Screwdriver device Screwdriver repair Hand milling cutter Work with a hand mill Attachments for a hand milling cutter Electric jigsaw Disc drunk Guides for a circular saw Electric planer Reciprocating drunk Eccentric sander Belt sander Perforator Differences between a perforator and a percussion drill (garden) tools: Homemade sawmill Homemade concrete mixer Homemade cultivator from a winch Homemade plow Homemade hand cultivator Hand seeder Homemade wood splitter Chainsaw Chainsaw device Chainsaw attachments and Chainsaw attachments Chainsaw repairs Chainsaw repair Universal trestles sorting and washing potatoes Apple fruit lifter Cottage lift Homemade snow blower Trimmers Lawn mowers Loppers and Brush cutters Snow cutters Tiller handcuffs Tiller work Mowers old tools First tool Overview of screwdrivers Overview of wrenches Pliers, pliers, wire cutters, etc. Clamps and clamps Drank File Milling cutter Drill die and Tap Sharpening: Knife sharpening Accessories for sharpening Bars for sharpening knives Knife sharpening angle Setting and sharpening of the saw Drill sharpening Chainsaw chain sharpening Machine for sharpening from a belt plastic grinder PartN Plexiglas glass processing plastic Fluoride glass processing 351. high-quality basic household-grade chainsaw for work on the personal plot, harvesting firewood and during repair and construction.

Do-it-yourself chainsaw repair A chainsaw, with all its thirst, cannot be classified as a complex device. over, the simplicity of the design is its hallmark. However, repairing a chainsaw can be time-consuming. The difficulty lies not in the repair itself, but in the correct diagnosis of the malfunction.

Engine Malfunctions Chainsaw engine malfunctions occur quite often, it is their correction and detection that takes the most time for users. For the most part, they boil down to the following manifestations: the engine will not start; starts, but stalls; works unstable; does not develop power, i.e. works normally at idle, but stalls under load. When repairing a chainsaw with your own hands, it is necessary to function as an exclusion method. to control one by one all the likely circumstances of a malfunction, starting with those whose elimination and verification takes less time (see here for the work and device of a two-stroke engine). Ignition set. Virtually all types of engine malfunctions listed above can be caused by faults in the ignition aggregate.

Proceeding from this, at their origin, it has the essence to start searching for a malfunction from a candle. This is all the more justified since the state of the latter can provide the necessary data on the operation of the fuel system. So, if a problem occurs, you must unscrew the candle and inspect it. Unscrewing the spark plug If the spark plug is dry, this means that the trouble is most likely not in the ignition system, but in the failure of the fuel mixture entering the cylinder. It is possible to wrap the spark plug back and take up the fuel assembly.

If the spark plug is very heavily splashed with the fuel mixture, then there is an excess of it. This can occur from a misalignment of the carburetor or a violation of the starting rules. The candle is wiped and dried, the cylinder is drained by shutting off the fuel supply and working with the starter in order to ventilate the combustion chamber and remove excess fuel. At the end of which, install the candle in place and repeat the start. Advise how to tune the carburetor of a partner 350 chainsaw or how much it will cost Expert of the service center for the repair of petrol equipment.

Tell me how many hoses are used in the Partner chainsaw to supply gasoline to the carburetor. The presence of a huge amount of dark carbon deposits also indicates malfunctions in the fuel system. A candle with dark carbon deposits The ratio between gasoline and oil in the mixture may be violated, the carburetor is not adjusted, or low-quality oil has been used. The candle is washed in gasoline, cleaned with a needle or an awl from carbon deposits, the electrodes are cleaned with a small sandpaper and installed in place. In all these cases, it will not be superfluous to check the gap between the spark plug electrodes.

Depending on its brand, it must be in the range of 0.5-0.65 mm. It is also necessary to check the spark plug gasket. If it is worn out or damaged, it is possible that the tightness of the combustion chamber is not ensured, which leads to a decrease in compression in the cylinder and problems in engine operation.

In addition, if, when checking the spark plug, there are huge reasons to believe that the malfunction is in the fuel system, it is necessary to check the spark plug for the presence of a spark. At least to be sure that this is all right. To do this: put the ignition cable on the spark plug; using pliers with insulated handles, apply a thread or a candle nut to the cylinder; pull the starter handle and observe whether there is a spark or not. In the absence of a spark, a candle is required.

If the new spark plug does not have a spark either, it is necessary to check the condition of the high-voltage wire for contact and breakage with the spark plug. The absence of a spark may also be a faulty ignition module or a violation of the gap between it and the flywheel magnetic circuit. It must be 0.2 mm. A gap violation is made especially possible if the saw was disassembled before the module and the ignition flywheel were removed. The gap is set with a 0.2 mm gasket placed between the ignition module and the flywheel boss.

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The defective ignition module must be replaced. Having checked the set of ignition in this way and not finding a malfunction, it is possible to proceed to the set of supply of the fuel mixture. The set of fuel supply. If by inspection of the candle it was found that the fuel does not enter the cylinder, it is necessary to discern all the probable circumstances of this. This is possible: not the flow of fuel from the tank due to a clogged hole in its lid (breather), along with this, a vacuum is created in the tank, which prevents the flow of fuel; contamination of the fuel filter installed in the tank; non-flow or insufficient flow of the fuel mixture from the carburetor to the cylinder.

To diagnose the first two circumstances, it is enough to disconnect the fuel hose from the carburetor and see if fuel is leaking from it or not. If it flows with a full stream, the filter and breather may not be controlled, if it does not flow or flows weakly, we can assume that the cause of the malfunction has been found. The breather is cleaned with a needle.

The fuel filter is removed through the filler opening of an empty fuel tank, with a wire hook, together with a suction hose from which the filter is disconnected and cleaned or replaced with a new one. Chainsaw manufacturers advise changing the fuel filter every 3 months. Fuel filter Insufficient flow of the fuel mixture from the carburetor into the cylinder or a violation of the correct ratio between air and fuel mixed in the carburetor can occur for several reasons: due to clogging of the air filter, unregulated carburetor, clogging of its channels or mesh filter. In most cases, the repair of chainsaws is not complete without cleaning the air filter, because it gets dirty soon enough.

At the time when this happens, the flow of air into the carburetor decreases, the fuel mixture at the exit from it is too rich, which disrupts the normal operation of the engine. It is necessary to carefully remove the unclean filter for cleaning so that dirt from it does not get into the carburetor. The filter should be cleaned or washed in water with some kind of detergent, dried and reinstalled. A set of air purification: 1. a cover that covers a narrow filter, 2. a narrow filter, 3. a cover that covers a rough filter, 4. a rough filter (it may not be there). Misalignment of the carburetor is eliminated by adjusting it.

In most cases this is done by means of three screws. the large and minimum screw and idle speed. The adjustment must be carried out in strict accordance with the instructions, non-observance of which may lead to engine damage. Some manufacturers of drank leave only one adjusting screw (idle speed). in order to exclude unwanted intervention of inexperienced users in the repair and maintenance of the chainsaw. chainsaw Partner 350, 351. Repair of chainsaws. adjustment and repair of the carburetor of the Partner 351 chainsaw.

Do-it-yourself chainsaw repair, advice on setting up and repairing. Saligram, Chainsaw disassembly Partner-352, For those who like to do equipment repairs with their own hands. Repair of the Partner P351XT chainsaw. Carburetors, ignition, practical advice. Video replacing the rear shock absorbers Volkswagen Passat. disassembling the rear shock absorber.

Guys help with information on the repair and adjustment of the Partner 351 saw carburetor. I will briefly outline the problem. 1. Does not start well. How to start a chainsaw without a carburetor. Chainsaw repair is a very common disease of the seals. but this chainsaw has its pluses and it is very difficult to disassemble it, but the minuses are dofig The main adjustment of the carburetor of the “Partner” chainsaw is created at the factory when testing the chainsaw.

The carburetor is adjusted to a richer than optimum mixture. Engine overhaul required. Carburetor clogged. Adjustment of the carburetor of a Partner or other manufacturer’s chainsaw is carried out taking into account the following rules Repairing the Partner P351XT chainsaw.

Series 2. test and Assembly 1 Series here. h How to set up a chainsaw carburetor. For the flawless and long-term operation of the chainsaw, sometimes a provo is required. Partner 350/351 chainsaw repair workshop and other models. Domestic experts create a variety of work in terms of complexity, it is possible both to repair the carburetor of a Partner chainsaw, or simply to change a cracked handle. Construction, repair with your own hands. Adjusting the carburetor of the Partner 351 chainsaw.

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Chainsaw engine Most modern chainsaws have a single-cylinder 2-stroke air-cooled carburetor engine Carburetor operating principle video Carburetor video online chainsaw Partner 351 DIY repairs chainsaw carburetor tuning diagram partner 351.

Partner chainsaw will not start Carburetor repair and Diagnostics Carburetor adjustment

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When carburetor adjustment is required

If it happened that the adjusting screws were loosened, then the carburetor should be adjusted. Other signs may indicate the need for these manipulations, among them:

connecting, carburetor, partner, chainsaw
  • breakage of the protective cap;
  • significant piston wear;
  • interruptions in the operation of the motor;
  • strong vibration;
  • no response from the engine when trying to start the tool;
  • increased fuel consumption;
  • strong exhaust.

Basic adjustment step

First you need to use the rotational screws. They are wrapped clockwise all the way. Then turn it back one and a half turns.

Idling check

You should know how to adjust the carburetor on a Chinese chainsaw. In this case, another check is carried out at idle speed. Once the acceleration adjustment has been completed, the tool must be brought to idle. If you did everything correctly, the chain will remain stationary, and the motor will pick up speed in a short time when you press the accelerator.

You should also listen to the operation of the engine. The sound should be like a four-stroke unit. If you are thinking about how to properly tune the carburetor on a chainsaw, then you must make sure that the above conditions are met. If this is not the case, then the adjustment must be repeated, in this case the basic stage is omitted. You should not take to work if you do not have sufficient experience, because in this case, misalignment of the unit may occur. When self-tuning is not possible, then stable work can be achieved by contacting professionals.

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Additional signs

If piston wear has occurred, then it will also be necessary to repair the engine, but adjusting the carburetor will act as a temporary measure, while the unit will work more stably. If the described unit turned out to be clogged, which led to interruptions in the operation of the motor, then it will also be necessary to flush.

Whereas when a situation arises when the engine stalls or does not start, we can conclude that the working mixture was depleted. Incomplete combustion of the fuel mixture is also indicated by the abundant exhaust. This conclusion can be reached if the tool began to consume excessive amounts of fuel.

How to set up a carburetor on a chainsaw: recommendations

Chainsaw carburetor. this is one of the main components of this tool. He is responsible for the fuel supply. The efficiency and power of the equipment depends on how correctly this unit functions. Timely adjustments are also economical.

Before adjusting the carburetor on a chainsaw, you should know that adjustments to this part of the device are quite rare. Typically, the factory setting is sufficient for normal operation. However, if a more precise adjustment is required, then special screws can be used. Before starting such work, it is necessary to understand the subtleties and nuances of the process.

Final stage

Before adjusting the carburetor on a Husqvarna chainsaw, you need to find the third screw, which is marked with the letter “T”. The engine then warms up for 10 minutes at medium speed. The third screw must be turned counterclockwise until the motor starts to run steadily. The chain must be stationary.

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If the engine stalls at idle, the screw should be turned clockwise. When the target moves, the screw is unscrewed back. If you are faced with the question of how to set up the carburetor on a chainsaw, the next step is to check how the engine works correctly at maximum speed when accelerating. It should be assumed that the engine is functioning correctly during acceleration if the accelerator is pressed to a maximum speed between 2800 and 15000. The screw marked “L” must be unscrewed to the left one eighth of a turn.

Specialist’s recommendations for working with the Druzhba chainsaw carburetor

Then the tool is warmed up, full throttle is given, and the first of the mentioned screws is rotated in such a way as to reach 14,000 revolutions per minute. The maximum speed should be held for 10 seconds or less.

By turning the last screw, the chain should begin to move. The bolt is then loosened a quarter turn counterclockwise. If after that the idle speed turned out to be not so stable, and the tool accelerates slowly, the screw under the designation “L” must be turned counterclockwise, only then the chainsaw will pick up speed.

It is important to remember that the adjustment will not give results if air is sucked into the engine from the side. This can happen through:

  • accelerating pump;
  • carburetor;
  • a gasket under the carburetor;
  • crankshaft oil seals.

After completing the procedure, the engine of the instrument can be started by warming it up for 10 minutes. In this case, you can set the average speed. Then you can do the idle screw.

Horizontal carburetor

A separate place is occupied by the design, which is used in the device of the main dosing system of a horizontal carburetor with needle-type adjustment. Such a system provides a simultaneous mechanical change in the amount of air that has passed the diffuser due to the rise of the gate, and regulation of the amount of fuel entering the diffuser, which is metered by means of a needle with a variable profile.

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The needle passes through the jet and mechanically changes the flow area. In such carburetors, the ratio of both the diffuser section and the jet is clearly set. These sections directly depend on the height to which the gate rises. Carburetors, which have a constant vacuum, at a time show a change in this characteristic according to an automatic principle. The task is realized by means of a damping system, which is based on a spool, and also relies on a vacuum in the area of ​​the throttle valve. The system functions thanks to the determined load on the power unit and the consideration of the angle of rotation of the throttle valve.

Autonomous idle

In a number of designs, the system is made autonomous, equipped with additional devices for the formation of a fuel-air working mixture. In other words, a kind of additional carburetor is obtained, working inside the main carburetor and adapted for efficient operation in conditions of low air consumption. An example is the autonomous idle system of the “Cascade” type. Such a system is needed so that the composition of the working mixture remains uniform when distributed over the cylinders of the power plant, as well as to stabilize a number of characteristics and the mixture formation process itself, consistency with the ignition moment, etc.

This system has received the main channel constructively. The inlet of the channel is located in the region of the edge of the throttle flap that is lowered. The channel groove itself has an outlet to the area under the throttle. This arrangement is capable of providing the ability to immediately stop the movement of air and fuel in the channel at the moment when the throttle valve is opened. This channel becomes the main path for the emulsion that has formed in the idle system.

The best spray quality is achieved by mixing this emulsion with air using special nozzles. Sprayers are capable, in the mode of low air and emulsion consumption, to give the working air-fuel mixture the highest speed of movement, bordering on the sound speed.

This feature of autonomous idle solutions allows for the highest quality spray of the mixture, which is impossible when using other systems in carburetor injection. Advanced carburettors can have an autonomous idle system that emulsifies between 2 and 4 times.

Such autonomous systems can be arranged differently from each other. The simplest scheme of the device is demonstrated by the DAAZ 2140 model carburetor. This carburetor has a design in which the air flow passes through a small slot. In this slot in the upper part, another slot is additionally opened from the channel through which the emulsion enters. Due to the ratio of the cross-sections of these slots, the emulsion and air get speeds close to the speed of sound.

Autonomous idling of the “Cascade” type received a type of atomizer, which resembles a ring in its shape and has holes located in a circle. The emulsion coming from these holes meets the air flow. The entire autonomous idle system of this design strongly resembles the principles of the carburetor mixing chamber. The atomizer in the center is equipped with a special adjusting screw with a special profile. This screw adjusts the amount of the mixture in the autonomous system.

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There are idle systems that have spray nozzles in the emulsion movement channel directed to the central zone of the common channel. The air flow in this design is supplied through an adjusting screw, also equipped with an air duct.

Adjusting high engine speed

You can set up the carburetor using a simple scheme. This is done by unscrewing or tightening the screw H. This must be done until the engine reaches about 15,000 rpm at maximum speed. Measurements should be carried out with a tachometer.

Knowing how the chainsaw carburetor works, you will be aware that under load, the frequency of the spark charge can decrease by about 15%. The frequency should be measured with an oscilloscope. This value can vary from 230 to 250 Hz. To comply with safety measures, it is necessary to tune the internal combustion engine at a slightly lower speed.

If you have a Chinese chainsaw in front of you, its carburetor is adjusted according to the same principle. There are holes on the body, into which you need to insert a flat screwdriver to adjust the speed. Once you become familiar with the principle of operation of this type of chainsaw carburetor, you will know that each hole has its own designation. For example, near the top you can see the letter T, while near the bottom. the letters L and H.


What does the carburetor consist of?

In modern carburetors, a large number of systems with branched channels and linkage systems are installed. With a quick visual examination, their purpose is not always clear. It’s easier to figure out the work of individual elements block by block, as well as to disassemble the principle of operation of the carburetor based on the simplest representative of the family.

Husqvarna Cutoff Saw Carb Replacement

What type of carburetor is used in modern chainsaws

All modern chainsaws use membrane-type carburetors. They were developed by the German designers of the world’s leading manufacturer of chainsaws, Stihl, in the mid-50s of the last century and revolutionized the design of chainsaws.

Before that, float carburetors were used, which could only work when the chainsaw was in an upright position or at an inclination of no more than 45-50 degrees. New membrane devices made it possible to operate the chainsaw even in an inverted position.

Membrane carburetor from different angles.

Idle system

A parallel system is extremely rare, more often a sequential or stand-alone one is presented. By the type of spray, a throttle spray and a spray in the space behind the throttle are distinguished. The system is designed so that there are channels for air, fuel and emulsion in the base. There are also metering elements, which are nozzles for idling. The idle jet, responsible for the fuel supply, takes the emulsion at the bottom of the corresponding well of the main dosing system.

It turns out that this jet is an element in the fuel channel of the metering system. The idle air jet is connected to the space in the mixing chamber. We are talking about the upper part of the chamber, and such a device is able to implement a change in the amount of supplied air that enters the idle system under various loads and operating modes of the power unit.

Due to these characteristics, the idle system is an important participant in the chain of elements that are involved in the process of correcting the composition of the working mixture for the main dosing system.

Most often it happens that air enters the idle device through several channels (there are two or three channels). This implementation provides the process of emulsion formation in two or three stages, which contributes to obtaining a more homogeneous working mixture and at the same time improves the uniformity of its composition for each individual cylinder of the internal combustion engine.

The idle system has an outlet for the mixing chamber space. There is sufficient idle vacuum in the space behind the throttle to keep the idle system running. Vias are open to the system channel. These holes are in the area of ​​the edge of the slightly open throttle valve.

Models K 88, DAAZ 2108 and some others received a single vertical hole, similar to a slit. One part is located below the edge of the throttle valve and is responsible for idling. If you start to open the throttle valve, then the gap increases, contributing to the operation of the motor during transient conditions.

At idle, the throttle valve is almost completely closed. The necessary vacuum in the carburetor is available immediately behind the damper. This vacuum allows fuel to be drawn from the main metering system through the idle hole. This fuel flows through the idle fuel jet and mixes with air that enters the idle air jet and other passages. The resulting fuel-air working mixture becomes enriched, which is what the engine needs to operate at idle speed. The proportion of gasoline and air in this mixture is presented in the range from 1/12 to 1 / 14.5.

The transient mode should be understood as the operation of the internal combustion engine with a small opening angle of the throttle valve. In this mode, the rich mixture from the channels of the idle system turns out to be in the zone of the flap edge, passes through a single hole or a structural group of vias, mixes with the incoming air and depletes within certain limits (1/15 or 1 / 16.5).

As already mentioned, certain carburetor models may have only one slot-like hole in the throttle flange area. This hole is vertical. Structurally, this solution is capable of providing effective compensation and fairly smoothly changing the composition of the fuel-air working mixture during the transition mode. Considering that the shape of the slot can be specified, then it is appropriate to speak of an excellent transient response. When the engine is operating in other modes, the idle system compensates for the composition of the working mixture, which is formed by the main dosing system. It turns out that the idle system plays an important role in the overall structure of the entire carburetor injection and ensures its correct operation.

It is not uncommon for the carburetor to demonstrate low efficiency or even inoperability after an unprofessional idle setting and at the same rpm set normally for this mode.

What other malfunctions can there be

When using the device, it will be noticeable that the engine is not idling or that there is an increased gas mileage. Because of this, the unit emits a lot of smoke, the muffler becomes dirty, and the candles are covered with carbon deposits. All this contributes to a decrease in engine power. Your actions should be to adjust the carburetor.