How to put rings on a piston of a mowing piston correctly. Partner chainsaw area…

Arrow on the piston of a two.stroke engine where to put a chainsaw

The heart of any chainsaw is an internal combustion engine that sets the working element. a sawing chain. During the operation of a garden tool, there is a need to disassemble the engine. This can be planned maintenance, cleaning from soot and soot, elimination of malfunctions or replacing nodes. If for this you will take the chainsaw to the service center, then you will not have any questions. However, with independent maintenance of a gasoline engine of a garden tool, the question often arises: how to correctly install the pistons back and where the arrow indicates them.

The heart of any chainsaw is an internal combustion engine that sets the working element. a sawing chain. During the operation of a garden tool, there is a need to disassemble the engine. This can be planned maintenance, cleaning from soot and soot, elimination of malfunctions or replacing nodes. If for this you will take the chainsaw to the service center, then you will not have any questions. However, with independent maintenance of a gasoline engine of a garden tool, the question often arises: how to correctly install the pistons back and where the arrow indicates them.

The algorithm for determining the malfunction

The reason for the refusal of the saw or the deterioration of its performance may be:

  • a clogged battleship cover;
  • Air sucker with a carburetor due to the destruction of the gasket or weakening of threaded fasteners;
  • Mechanical sequel of removable saw equipment and other minor defects.

Before starting disassembly, you should verify the need for a more volumetric repair.

Independently assemble a new chainsaw after repair with initial quality, most likely it will not be possible. In the design of modern chainsaws, press plantings of conjugated parts are often used, which have minimal maintainability.

Even a partial analysis of a chainsaw with an improvised tool can lead to undesirable consequences. In most cases, to eliminate a malfunction, you can limit yourself to the dismantling of a separate node or system.

What can the incorrect installation of the piston lead to

The incorrect installation of a piston ring in a chainsaw engine will lead to the fact that it will work strained and with interruptions, it can stall. In the end, at best, the piston or cylinder will be damaged. In the worst case, the engine itself will fail and require expensive repairs.

If your chainsaw has a need for repair or maintenance, bring immediately to a specialized service center. It is better to pay a specialist than buy a new garden tool.

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Usage

If the piston is powered with a signal of red stone, then its wooden head will advance, which will try to push the blocks standing in front (if they are moved and there are no more than 12). The nomination lasts about one and a half beats of the red stone (0.15 seconds) and is accompanied by a sound heard at a distance of 15 blocks from the piston along any axis. At the same time, if there are entities in the way, then if there are no blocks in their way, they will also be moved (and if the movable block is a mucus block, the entities will be thrown back), otherwise the head or block will pass through them; In the case of an essence block, it can be strangled by a block if it is solid.

When the piston is turned off, the head will move back. over, if this is a sticky piston, then the head will try to move with him a block “glued” to it. The effect of sticking occurs only when the head is moved, so the falling blocks after moving will still fall if there is a free space under them; Also, the block, which moved by a sticky piston, can be shifted by another piston without any complications. In addition, if the adhesive piston breaks off before

how he is in timepush out block, the piston “peers” from the block, which remains in its new place. If the piston has not pushed out anything and the diet is still disconnected prematurely, then the block that was destined to pull it behind him will be shifted as usual (though a little faster).

Installation of a piston on a Chinese lawn mower

The piston head at the time of installation indicates the direction of the player who installed it.

Piston group of chainsaws

The dimensions of the cylinder piston group are determined primarily by the diameter of the piston made of heat.resistant aluminum alloy. Regardless of the model of the CPH of the chainsaws, it consists of a cylinder, a piston holding a finger and two latches.

In order to increase compression in the working unit and, as a result, increase in power, many manufacturers install two piston rings. The compression rings made of special cast iron, the chainsaws are tightly adjacent to the cylinder, as a result of which the combustion chamber is ensured.

Replacing the piston group in a chainsaw or trimmer

Repair of such a level should always be balanced. In such small engines operating at high speeds, the substitution of the 1st piston, which burned out or jammed, gives a long result and, as needed, you need to change the entire piston group. Therefore, you need to think about whether to use this saw further or purchase a new saw.

If this is a professional model, then such a repair should be carried out, but if it is an old household model like Husqvarna 40 and it has worked for more than ten or twelve years, it is unprofitable to repair it. Installation of rings on the piston of the lawn mower. Because its repair will cost, as well as the purchase of a new saw, let not Husqvarna, but on the Partner P350XT Chrome, worth 165 for sure. over, Husqvarna sells such saws, since Partner is its subsidiary.

But if you still decide to repair a chainsaw or a trimmer for grass, then you need original spare parts that are not cheap. With proper operation of the engine, the first repair may not occur soon and only a piston ring or ring will have to be replaced, depending on the model. But if the saw jammed, then you need to change the entire piston group. a cylinder, piston and rings.

It should be noted that the Husqvarna 136/141 chainsaws have approximately a resource of 500-600 mothers, Husqvarna 340/350-1000-1200 mothers, professional chainsaws of at least 2000-2500 mothers, provided strictly compliance with the instruction manual. In fact, you can’t rely on these figures, since the real resource can differ significantly both in large and less. But it can be approximately that semi-professional saws work 3-4 times longer than amateur, and professional up to 10 times or more.

Of course, there is nothing eternal, but it is one thing if you change the piston group, after long years of operation and it has worked out my motorcycle chassis, has fully paid for itself, and another thing is that this saw was refined for example, with one gasoline, without oil, and it jammed. Such a saw has to be repaired, since all other details are normal.

Simple lawn mower motor piston-ring replacement

In this video I will show how to quickly change the piston on the trimmer. I will change on the trimmer.

How to put a piston correctly

The trunk shows and tells how to correctly install the piston in the cylinder on a scooter and motorcycle

Many firms specially overstate the cost of spare parts to buy new models. On chainsaws and trimmers for grass, for example, STIHL, spare parts are in a greater assortment than on Husqvarna. Therefore, choosing a certain model, find out how things are with spare parts.

Obtaining

The pistons can be removed by any tool (even with your hand), and in any case it will fall out as an object taken.

Piston power

Pistons can be frightened by various ways:

rings, piston, mowing, correctly, partner, chainsaw
  • If the red wire is directed directly to the piston, and directly after it it has the shape of a straight braid fishing line. The wire does not curl automatically to the piston.
  • If right next to him is a block charged with a red stone (any strength) or a red torch.
  • If the charged block is located diagonally above the piston, or two blocks above it. There is no physical contact with the piston, so the piston is “not guessed” that it is charged until it is updated by the neighboring block (quasi.compound phenomenon). On this principle, many block renewal sensors are built.
  • Pistons are considered an unbearable (“transparent”) block, therefore it is impossible to transfer energy through them.
  • The pistons cannot be charged from their head. However, if the piston is directed up and pushed the charged block there, then it is due to quasi-compound (see. above) it will be charged with them.

Piston chainsaw replacement algorithm

If it is time to replace the CPG of the chainsaws, you need to know that for each specific model there is an individual algorithm of action. To facilitate the disassembly/assembly work, it is necessary to prepare a candle key, a large flat screwdriver, a hammer, a compressor for cleaning the parts of the unit, a set of rock and end keys. Regardless of the manufacturer and the design features of the model before removing the chainsaw cylinder, the following work must be done:

  • Dismantling the upper protective cover;
  • Spinning candle twisting;
  • Removing the side cover;
  • With the help of a large flat screwdriver, stoppers from shock absorbers are removed;
  • In the candle channel, place the cranberry lamp and unscrew the clutch and nut of the flywheel;
  • Dismantling the leading star of the chain;
  • We remove the carburetor with an air filter;
  • Remove the ignition module and exhaust system.

After removal from the base of the power unit, unscrew the pallet and take out the crankshaft with a piston from the cylinder. Using a locksmith tweezer or screwdriver, dismantle the piston fingers.

rings, piston, mowing, correctly, partner, chainsaw

Before dismantling the Piston, it is necessary to remember its location in the cylinder in order not to spend time subsequently on re.disassembling and assembly of a power unit.

Sealant for fixing the shaft of the chainsaw

Before starting the assembly, compressed air, rags and other means to clean the parts and assemblies of the unit from dirt, remains of sawdust, dust. The first stage of replacing the piston chainsaw is to install the piston on the crankshaft. We fix it on the connecting rod with a steel finger that is included. In order to prevent the arbitrary loss of locking rings, it is recommended to install them with a cut down. Next, we mount the compression rings on the piston, but due to their fragility and brittleness to this operation, you need to approach as carefully as possible. To prevent the formation of scratches before installing the piston in the cylinder, grease the piston with oil. Before installing the crankcase (pallet), it will be necessary to degrease its mounting surface and apply a layer of heat.resistant sealant. The assembly of the chainsaw is carried out in the reverse algorithm described above.

Often the replacement of the piston of the chainsaw, crankshaft and compression rings solves problems with the idle stroke and with a problematic launch of the internal combustion engine.

How to put a piston on a lawn border

How to install a gasoline piston correctly

How to install rings on a two.stroke scooter piston

Published 25.0828 Creator: Scooter.RV.ua

Installing the rings on the piston of a two.stroke scooter, as a rule, as a four.stroke scooter, there is no complicated anything, and many understand this. But most scooters who recently purchased this equipment do not know how to change the piston on a scooter, how to correctly install rings on the piston, where the arrow on the piston should look, and almost everything else should look. In this lesson, I will tell you how to wear piston rings and collect the piston in place. Since we have already talked about four.stroke engines, here we will only talk about two.stroke engines. So, our piston is worn out and requires replacement.

Rings and piston wear out at first, and usually they only need to be replaced. If the piston is strongly worn, the cylinder must be drilled. It also opens in this case, when the piston wedges into the cylinder, forming the deepest scratches on the walls of the latter. There is nothing wrong with this, and if your new cylinder has passed through the correct hole (which you need to put only about 10), it will already need a repair kit with a new piston. Such rings are indicated 0.25. The 2nd is boring, respectively 0.5 and t. D. To one.

After buying the piston, you need to collect it. As a rule, you will usually find a piston itself, two compression rings, a third thin corrugated ring (for the appointment below), a piston finger and two locking rings of piston fingers.

rings, piston, mowing, correctly, partner, chainsaw

Now about the 3rd ring included. His appointment. Tighten the spring to the lower compression ring. It is actually installed under it and, as a rule, is useless in the process of using. You can quit this ring, but you can put it, there is no difference. Many manufacturers do not have a piston at all.

It’s time to put everything in place. Depending on the scooter model, compression rings can be the same or different in thickness and cross section. For example, most pistons for scooters Honda have different rings, where the upper part is thinner, the lower one and has a different intersection.

Be sure to pay attention to the installation, more thin and sharpened at an angle.

Also pay attention to the inscription on the ring (usually the letter T or repair size), the inscription should always be from above, that is, the back of the finger. First you need to put the bottom, then the top. In this case, you do not need to stretch them and bend them. These manipulations should be carried out with caution.

Read how to light a car from a car correctly

There are castles in the grooves for the rings that prevent the rotation of the rings during operation, since the gap of the rings should be in these locks, otherwise you will not insert the piston into the cylinder.

And the last important point. arrow (1) on the day of the piston or the inscription ex. Both the arrow and the inscription should always be focused on exhaust gases (2). This is the case, the locks of the rings will be located on the side of the valve. If the locks put the piston in the direction of the exhaust for a long time, the rings will drag out into the final window and gradually polish it.

When installing a piston finger, pay attention to the condition of the cell (bearing), you may need to be replaced. Before installing the piston finger, install the locking ring on one side before installing the piston (usually on the side where you find it uncomfortable to snatch your finger and the second stop ring). Then place a finger with a bearing and a second stop ring when it is locked in a groove, this will give a certain click.

How to change the piston for a trimmer for grass.

In this video, I will show you how to quickly replace the piston with a trimmer for grass. I am changing a trimmer for grass.

Chinese brush make repairs yourself.

I apologize, but I was warned. When the rings are extended if they are installed in the direction of release, they will be intense.

That’s all, now put on the cylinder, not the piston (be sure to check the condition of the gaskets and lubricate the piston and the cylinder walls with motor oil), the cylinder head and tighten the bolts crosswise.

If you have any questions when replacing the piston, you can ask them in the field for commenting or on the forum of our site. Good luck in the repair.

Replacing the piston group with a chainsaw or trimmer

Repair at this level should always be balanced. In such small, high.speed engines, the replacement of one piston, which burned or stuck, does not give a long.term result and, if necessary, a whole piston group. Therefore, you need to decide whether to continue to use this saw or buy a new saw.

Read which engine can be put on Peugeot 308

If this is a professional model, then such a repair should be carried out, but if it is an old household type model, such as Husqvarna 40, and it has worked for more than ten to twelve years, it is unprofitable to repair it. Because there is so much repair there. as well as buying a new saw, not Husqvarna, but Partner P350XT Chrome, worth 165, is quite enough. over, Husqvarna sells such saws because Partner is her subsidiary.

But if you decide to repair a chainsaw or a trimmer for grass, you will need original spare parts that are inexpensive. With a proper engine, the first repair may not take place in the near future, and replace only piston rings or rings, depending on the model. But if the saw jammed, then you need to change the entire piston group. cylinder, piston and ring.

It should be noted that the chainsaws of Huskvarna 136/141 have a resource for about 500-600 hours, Huskvarna 340/350. 1000-1200 hours of engine operation, professional chainsaws of at least 2000-2500 hours of engine operation, subject to strict compliance with the instruction manual. In fact, these figures cannot be relyed, since a real resource can vary significantly both up and down. But we can roughly say that semi-professional saws work 3-4 times longer than amateur and professional. up to 10 or more times.

Of course, nothing lasts forever, but one thing, if you replace the piston group after many years of work and after work of its watch, it will fully pay off, and the other thing is that, for example, this saw was refueled with one gasoline. without oil, and he got stuck. Such a file should be restored, since all other parts are normal.

The algorithm for determining the malfunction

The reason for the refusal of the saw or the deterioration of its performance may be:

  • a clogged battleship cover;
  • Air sucker with a carburetor due to the destruction of the gasket or weakening of threaded fasteners;
  • Mechanical sequel of removable saw equipment and other minor defects.

How to change the piston on a benzocosa yourself.

Before starting disassembly, you should verify the need for a more volumetric repair.

Independently assemble a new chainsaw after repair with initial quality, most likely it will not be possible. In the design of modern chainsaws, press plantings of conjugated parts are often used, which have minimal maintainability.

Even a partial analysis of a chainsaw with an improvised tool can lead to undesirable consequences. In most cases, to eliminate a malfunction, you can limit yourself to the dismantling of a separate node or system.

Piston chainsaw replacement algorithm

If it is time to replace the CPG of the chainsaws, you need to know that for each specific model there is an individual algorithm of action. To facilitate the disassembly/assembly work, it is necessary to prepare a candle key, a large flat screwdriver, a hammer, a compressor for cleaning the parts of the unit, a set of rock and end keys. Regardless of the manufacturer and the design features of the model before removing the chainsaw cylinder, the following work must be done:

  • Dismantling the upper protective cover;
  • Spinning candle twisting;
  • Removing the side cover;
  • With the help of a large flat screwdriver, stoppers from shock absorbers are removed;
  • In the candle channel, place the cranberry lamp and unscrew the clutch and nut of the flywheel;
  • Dismantling the leading star of the chain;
  • We remove the carburetor with an air filter;
  • Remove the ignition module and exhaust system.

After removal from the base of the power unit, unscrew the pallet and take out the crankshaft with a piston from the cylinder. Using a locksmith tweezer or screwdriver, dismantle the piston fingers.

Before dismantling the Piston, it is necessary to remember its location in the cylinder in order not to spend time subsequently on re.disassembling and assembly of a power unit.

Sealant for fixing the shaft of the chainsaw

Before starting the assembly, compressed air, rags and other means to clean the parts and assemblies of the unit from dirt, remains of sawdust, dust. The first stage of replacing the piston chainsaw is to install the piston on the crankshaft. We fix it on the connecting rod with a steel finger that is included. In order to prevent the arbitrary loss of locking rings, it is recommended to install them with a cut down. Next, we mount the compression rings on the piston, but due to their fragility and brittleness to this operation, you need to approach as carefully as possible. To prevent the formation of scratches before installing the piston in the cylinder, grease the piston with oil. Before installing the crankcase (pallet), it will be necessary to degrease its mounting surface and apply a layer of heat.resistant sealant. The assembly of the chainsaw is carried out in the reverse algorithm described above.

Often the replacement of the piston of the chainsaw, crankshaft and compression rings solves problems with the idle stroke and with a problematic launch of the internal combustion engine.

How to put rings on a piston of a mowing piston correctly

8) the correct installation of the rings on the piston_ we use the old ring if it is the whole and lower it into our cylinder place it exactly with the help of the piston. Measure the gap in the end of the ring with probes. Now we insert our piston and measure the gap between the piston and the cylinder mirror it should be no more than 0.6mm. Now we insert our new rings, also using the piston we advance them to the middle of the cylinder and measure the gap it should be for compression rings: 0.1-0.25 mm (the maximum permissible 0.4 mm) for oil-shooting rings 0.1-0.4mm. End gap “Compression ring. Piston groove “: nominal 0.03-0.05mm, maximum 0.1 mm. Everything coincided? So we continue further if there is no go to the store for new rings or for a new piston. You need to remove the entire piston from the grooves.So you decided to replace the piston, or just a piston with rings, or maybe only rings. It is important to know how to dress rings on a four.stroke engine piston. Here are 5 pieces, two thin and two.function spring expander (oil.breeding) and two compression.There are three grooves on the piston. Into the lower, the one that is near the hole where the finger is inserted, three rings, a spring expand and two fixing thin.Previously lubricating the rings and the piston with oil, you need to carefully put on the first in the corresponding groove a two-function spring expanded ring, and then the upper and lower fixing. All three rings should stand in one groove, so that the masl is pressed not so much on top and below as to the end (in the direction from the edge to the center of the piston), with the help of special “steps” on the corrugated ring (it is wider than fixing to the width “ Steps “). They finished with these.On the upper rings usually stands the word torus (peak). This side should be turned to the bottom of the piston.Now we dress compression, in the same way on the upper grooves. Dress the rings very carefully, with your fingers, without any third.party metal objects. If the profile of compression rings is not the same, then one usually have a rounded shape, the second form of the trapezoid. In this case, the rounded ring is installed upward, and the fact that in the form of a trapezoid is installed below, so that the bevel expands from top to bottom, that is, at the bottom of the groove it should be wider than at the top. The upper ring of gray shade, lower black with the inscriptions up. The locks of the rings cannot be installed over each other in any case, they must definitely move in a plane of 2 cm in different directions, as a result, the distance between them, if you bring it to the parallel, should be 4 cm. The ring should be shed in the groove.The assembly of the piston group piston group is assembled in a certain order. First, a locking ring (lock) is inserted into the groove of one of the piston pistons. The piston is put on the connecting rod, combining the holes of the bobes with the opening of the upper head of the connecting rod. The piston has a marking “in”, t.e. INLET. The inlet is at the top, which means this marking should be at the top. A lubricated piston finger in the opening of the connecting rod is inserted into the hole of the piston, where there is no locking ring.If the finger enters the bosses too tight, you can send it to its place with light blows with grooves. But this must be done carefully enough so as not to damage the piston beavers. Putting the next key ring into the piston piston, piston rings are put on the piston. After that, a shaped paper gasket previously greased with oil is put on the studs of the cylinder mounting, and lower it to the crankcase flange.Wearing a cylinder with a mirror lubricated with oil, it is slowly lowered down until the lower part is put on the piston head. After that, the upper piston ring is squeezed with the fingers in the lock, and easily hitting the upper part of the cylinder. Pour to the next ring. We do the same with the rest of the rings.View all images

How to put rings on a piston of a mowing piston correctly

I was faced with the fact that there is no normal manual to install a kit with set.free rings. I decided to share and at the same time save in my blog partially information from this record. I didn’t take my photos, t.to. And here everything is described in detail, and I have the rings of the same manufacturer.And so, we will start copying context)))

The rings took the type SM, now they are called npreurope. They have dialing oil rings.

In appearance of a very high quality ring. The top is covered with something. From the end is covered with chrome, as it should be. The second ring is cast.iron.

Check the gap in the locks inside the cylinders.

To check the gap, you need a flat probe. We insert the ring into the cylinder and align it with the piston in the cylinder to the middle of the skirt. The ring should stand exactly, tightly to the cylinder. If there are gaps between the ring and the wall of the sleeve, then such rings are in garbage, unless of course it is known that the cylinder is not an egg. The gaps will be with set.free oilflower, as they should burst into a separator.

The gap in the locks is normal. About 0.45mm compression, and 0.35mm set oil.out. In the previous record, I wrote that the gap in the oil.removable oil is very small and they need to be filled out, but this is not so =). Rushing the ring to the sleeve, the gap became about 0.35. This is done by the separator. So everything is ok.

Now we put on the piston directly. You need to start with a separator, and then thin oil.bearing. And only then the second compression and then the first compression.But first you need to do the following. A very important point! Which for some reason is almost not described anywhere. Not in manuals, not with the instructions for the rings.That the engine does not spend the oil with set rings, it is necessary that the rings work correctly, you need to correctly orient them on the pistons.I will try to explain in affordable =)

You need to pick up the “noodles” and squeeze, docking the castle. Like this.

Next, you need to mark one of the parties, for example, a marker. I marked the convex side on all the oil.shah.rings.Regarding the piston of the ring should be oriented in this way

What is it for? Now I’ll try to explain. In the course of the piston upward, the upper outline ring bends and does not fit tightly to the cylinder, passing the remaining oil on the cylinder to the lower set ring. In this case, the lower set ring (during the course of the piston upwards) straightens and scraps the oil from the walls into the piston groove with openings for drainage of oil into the crankcase. During the piston to the bottom, everything happens with accuracy and vice versa.

I schematically threw a picture for clarity.

If the rings are not correct, then it will be possible to conside the oil above the norm. Since the rings will scrape the oil not into the drainage holes but towards the combustion chamber, or towards the skirt.

After the sets are installed, the second compression rings are installed. They are cast.iron, very fragile, you can’t unclench very much. they will burst. It works as compression and partially as oil.scrubbing. For this, they have either a back or a cut of the end at an angle. The inscription “Up” or “Thor” is also necessarily present. It must be oriented to the bottom of the piston, aside to the combustion chamber. For verification, you can still focus on the backs. If the internal back (according to the inner diameter of the ring), then such a ring should look towards the combustion chamber, if the external diameter is a step, then we orient this side towards the crankcase.

The upper ring is steel, I put up the inscriptions up (usually they write a thread on the rings), although there is no particular difference.

After the rings are dressed, they need to be expanded relative to each other by 180 degrees. But not how it got.Oil.linked sets relative to the castles of each other at 180g, and relative to the separator lock for 90g.Castles of all rings cannot be oriented towards the refrigerator (towards the finger).

How to change piston on a trimmer.

In this video I will show how to quickly change the piston on the trimmer. I will change on the trimmer.

The trunk shows and tells how to correctly install the piston in the cylinder on the scooter and motorcycle now about the third ring in the kit. Its purpose is to spring the lower compression ring. It sets it for it actually, and usually does not bear any benefit during operation. You can throw this ring, or you can put it, there is no difference. How to install a piston on a chainsaw correctly. Many piston manufacturers do not have it at all in the kit.

Replacing a Chainsaw Piston and Cylinder

It’s time to collect everything in place. Depending on the model of scooters, compression rings can be the same or vary in thickness and cross section. Most pistons for Honda scooters, for example, have different rings, where the upper is thinner than the lower and has a different section.

This must be paid attention to when installing, the upper is thinner and stand at an angle.

Also pay attention to the inscription on the ring (usually the letter T or the size of the repair), the inscription should always be on top, that is the opposite from the finger. First you need to put on the bottom, then the upper. In this case, you do not need to stretch them and bend. These manipulations need to be carried out carefully.

There are castles in the grooves for the rings that prevent the rotation of the rings during operation, so the rings gap should be in these locks, otherwise you will not stick the piston in the cylinder.

And the last important point, this is an arrow (1) at the bottom of the piston or the inscription ex. And the arrow and the inscription must be directed towards the exhaust (2). In this case, the locks of the rings will be located from the side of the petal valve. How to put a piston on a chainsaw correctly. How right. If the locks are in the direction of the exhaust, the piston does not last for a long time, the rings will stretch out into the exhaust window and gradually grind it.

With all the panipulations with the piston, you must put a rag in the crankcase window so that something doesn’t get there inadvertently, we still need a crankshaft with bearings.

When installing a piston finger, pay attention to the condition of the separator (bearing), it may be necessary to replace it. Before installing the piston finger, install the locking ring on one side until the piston is installed (usually on the side where you will not be inconvenient for your finger and the second stop ring). Then put a finger with a bearing and a second stop ring, when fixed in a groove, it will publish a certain click.

That’s all, now put on the cylinder, not the piston (not forgetting to check the condition of the gaskets and lubricating the piston and the cylinder walls with motor oil), the cylinder head and tighten the bolts alternately on the crusade.

Trimmer repair council for grass MTD-600.

Today I want to share useful information about the repair of a trimmer for grass, which our reader Yuri kindly provided me. With his consent, I publish this, in my opinion, very useful information.

I will share how I repaired a trimmer for the grass of the MTD-600 (ignition problems), maybe who will come in handy.

At first, nothing is clear, the trimmer for the grass simply does not start, does not even sneeze.

I checked compression (to exclude the breakdown of mechanics in the cylinder, rings, a connecting rod, etc.)-the compressor shows after a pair of jerks 10 bar-this is enough, the cylinder piston-ring is in order.

Gasoline is supplied through the carburetor. the candle is wet, and the top of the piston is wet.

The candle is clean, gap 0.6 mm. When scrolling, there is a spark. a twisted candle (its skirt with a thread) with a wire temporarily connect with the cylinder and twist the starter. everything is in order.

There is compression, there is gasoline, there is a spark, but not starting. it means that problems with ignition (the ignition angle). But the moment of ignition on trimmers/chainsaws, on such two.strokes is not regulated! Therefore, we disassemble the trimmer for the grass. we take the engine from the shaft with the starter. Magneto opens-a coil with two converts and with two “cheeks” of the core, which at some point are closed by a magnet built into the flywheel for which the starter clings when scrolling. It was found that this was a closure (it can be seen. this is a combination of both ends of the core of Magneto with such well.highlighted platforms of the magnet in the flywheel, the gap there is a fraction of a millimeter, while in other positions of the flywheel there are several millimeters over the Magneto) does not coincide with the TMT ( the upper dead point) the piston (this point is easy to find, turning the shaft, watching the piston into the hole in which the candle is turned).

Here is a breakdown! Magneto should close somewhere next to the “VMT”, and it closes when the piston went down somewhere! We turn off the nut that presses the flywheel to the conical shaft. It is detected: a pin is cut, which enters the grooves on the shaft cone outside and on the inner cone of the flywheel and which is tightly mating in one position. How to replace how to properly put a fishing line for a trimmer on a trimmer for grass. After that set the coil. The flywheel “checked”. Most likely, someone pulled the starter with too much fool, so he tore off the flywheel, knocking down the ignition (the American trimmer for the grass, should easily start a child, the strength is not needed, but tractor drivers with the experience of starting the diesel engine starting, this technique is gently will be).

If there is no full.time pin, then you need to make it yourself: a small plate curved with the letter “u” so that it with its “horns” enters two grooves in the flywheel, and a curved part in a wide groove on conical vala. How to put a coil on a trimmer for grass correctly. How right. It is experimentally selected its size so that the flywheel sinks on the shaft and securely fixes.

We check the coincidence of the closure of Magneto and “VMT”, tighten the nut of the flywheel, collect a trimmer for the grass, start according to the instructions.