China Rivets For Chainsaw Chain How to Rivet

Stihl modern chainsaw chain lubrication system

  • Key Features
  • Practical tips
  • How to repair a chainsaw
  • Semi-synthetic oil brand Stihl

The Stihl chainsaw is called the smallest and having a fairly huge power. It allows you to do various operations with wood. This model is a more necessary device, because it has a good cutting ability. The tool has a huge number of additional accessories that add convenience to the work.

Schematic diagram of the Stihl chainsaw.

Key Features

System chain lubricant Stihl chainsaw consists of:

  • guide rail;
  • saw chain;
  • oil pump.

The oil supply by the pump has a special adjustment. Lubrication of the chainsaw chain occurs continuously during operation of the apparatus. Because chainsaw chains have a long service life.

During operation chain asks for a constant supply of grease. It must be provided with a continuous feed. This is requested by the design of the device. During operation of the chainsaw, the oil leaves the groove of the tire, is simultaneously absorbed by sawdust.

For this reason, the chain is lubricated automatically. Some chainsaw chains are equipped with a system that regulates a clear amount of lubricant supplied. The cheapest devices are equipped with a hand pump that runs on a drive located on the handle.

Scheme of checking the operation of the chain lubrication system.

For good chain lubrication, a special oil was specially created. After work, it quickly decomposes, so there is no violation of the ecological system. You can also use brand oils:

Transmission grease is absolutely unsuitable for operation. In the winter, it freezes, as a result, the oil system clogs, it is necessary to completely clean it.

In winter, chain lubrication requires special attention. Proprietary oil "M-20" in severe frosts thickens and resembles petroleum jelly. Therefore, to work in the winter, you need to lubricate the chainsaws with special winter oil, which has a more watery consistency.

It is not always possible to purchase such a lubricant. To solve the problem, diesel fuel is combined with oil, the viscosity decreases. But if the previously filled oil remained in the crankcase, then the addition of diluted oil will not give a beneficial effect, the channels of the system will remain clogged. There is only one way out. heating the chainsaw in a warm room.

With not very large hardening of the chain oil, you can test to melt it by running the saw at low idle.

Practical recommendations

The layout of the holes for lubrication.

Before starting to operate chainsaws, it is necessary to check the lubrication system chainsaw chains. For this purpose, it is necessary to hold the end of the tire by placing a paper sheet under it. When rpm is added, an oily strip should form on the sheet.

Proper lubrication of the chain greatly increases the life of the chainsaw headset. If there is not enough oil, then the device will be dry. The cutting headset will break quickly. The friction of the parts should be minimal, so all guides, joints should be covered with an oily film.

When the chain moves along the guide bar, the lubrication system must provide a constant flow of oil. This function is performed by the oil pump. With it, the right amount of oil is fed into the guide rail and its groove.

What is better for lubricating the saw chain: oil or mining?

When arguing and proving useless, watch this video on what to use for grease saw.

What kind of oil for chainsaw chains better to use, choice of chain oil for chainsaws and chainsaws

Which oil choose and use for chainsaw lubricant/ chainsaws.

Leading links of the chain spread the oil over the total length of the groove. The guarantee of the right
chain lubrication is considered:

Before starting work, it is necessary to constantly monitor the operation of the lubrication system. The correct supply of lubricant is determined on the sides of the chain, they must be lubricated all the time.

The main parameters of the chainsaw chain.

The need for lubricants is always different. It all depends on what needs to be sawn. When the length of the cut reaches large values, the tree has high hardness and a thick bark, it is necessary to have a large supply of oil.

If the cutting headset is smoked or the chain stops, you can talk about a lot of heat. The main reason is the lack of lubrication. Other reasons may include:

  • dull chain;
  • strong tension.

How to repair a chainsaw

To repair a chainsaw, you need to familiarize yourself with its internal structure, the operation of all mechanisms, study the lubricant supply system. When it works chainsaw, The following problems may occur.

Often there is a leak of oily liquid.

Hose may not be sealed properly. To solve this problem, you need to disassemble the tool, replace the hoses. If there are no spare parts, you can degrease the old hose and its seat. Fit self-tightening clamps to the place where the hose and tube connect. The field of this tightness will be restored.

The oil filter is sometimes clogged. It must be periodically cleaned. Oil supply is repaired only in case of a dry chain. This usually happens due to clogged channels. They must be thoroughly cleaned. This phenomenon is very common.

When it is difficult to start a chainsaw, and sometimes it is simply impossible, you need to diagnose the device. First, the candles and air filter are checked. All parts must be well dried before reinstalling.

Chainsaw fuel system: 1. fuel filter, 2. carburetor, 3. manual pre-pump.

If there is fuel on candles, we can talk about its excess. The main reason for this problem is a poor carb adjustment or improper start. The fuel valve may be closed. To eliminate the breakdown, you need to make sure that there is enough fuel in the gas tank, check how well the combustion chamber functions. If the candles become unusable, they must be replaced.

Perhaps the fuel supply was cut off due to a clogged breather. A vacuum forms in the gas tank, which blocks the fuel supply. This phenomenon occurs when the channels are clogged, the carburetor is badly tuned and the air filter is clogged. These problems require repair of the valve, which equalizes the pressure during the supply of gasoline. The breather is cleaned with a sharp needle.

To adjust the carburetor, you need to find the optimal speed value. For this, it is necessary to tighten or, conversely, unscrew the adjusting screws. This setting must be done exactly according to the Stihl chainsaw repair instructions.

The filter mesh is cleaned in the carburetor, all channels are blown, the membrane is checked for operability, and no breaks are allowed.

Work with the carburetor due to its complex mechanism should be carried out carefully and in perfect cleanliness. His normal and good work depends on it.

To achieve the correct operation of the chainsaw, you must constantly take care of it. It requires constant cleaning of the air filter, chain lubricant, and always with new, fresh oil.

When the tool is removed for long-term storage, it is necessary to drain all gasoline and remove oil to lubricate the chain. In this case, the chainsaw will work without breakdowns for a long time.

Semi-synthetic oil brand Stihl

Very often, the owners of such chainsaws, wonder what oil can be used for saws. Her work may be affected by:

  • cutting headset;
  • climate;
  • wood species.

To solve this problem, Stihl developed a universal semi-synthetic oil. It is suitable for all high-speed chainsaws. Under any conditions, such oil can grease chains. The tool will work flawlessly.

Since Stihl semisynthetics are designed for chains, it is made of special high-quality materials and does not contain various toxic substances that can cause cancer. The oil fully meets the most stringent environmental requirements.

The Russian climate is quite harsh. In our country, there are areas where frosts often overcome the values ​​at 20 ° C. The latest Stihl chainsaw oil has been specially formulated to work in cold conditions. In such a frost, it shows excellent fluidity.

Special additives that make up the oil do not allow the greasing of the cutting set, they will extend the life of other lubricated parts. A saw with such oil easily starts even after prolonged storage.

The use of such a chain lubricant reduces wear on the saw chain. Due to the high oil endurance at high temperature, the cutting set is under ideal protection. Such an oil is not afraid of a peak temperature load. Almost never appears smoky.

Chainsaw chains. what happens, do-it-yourself lubrication, tension

A chain is an integral part of a chainsaw, responsible for sawing and sawing wood. Today, there are many types of saw chains, each of which has its own design and parameters. We offer to study the classification of chains, the rules for their installation and maintenance at home.

What chains are there for chainsaws. types and features

Today on sale there is a wide selection of chains that are customarily distinguished by a number of criteria. Depending on the direction of sawing, the chains are divided into the following types:

  • Longitudinal. the use of such saw elements during operation increases the performance of the chainsaw;
  • Cross. the use of chains of this type allows you to smooth out the "aggressiveness" of the saw, which significantly reduces vibration on its handle and the load on the motor of the tool.

China Rivets For Chainsaw Chain How to Rivet

In addition, the saw chains are divided among themselves according to a parameter such as the chain saw pitch. this is the distance between the three interconnected links, divided by 2. Depending on this, chains with the following markings can be found on sale:

  • ¼ “or 0.25. chains with this step are installed on one-handed chainsaws that do not have high power, but are used for accurate sawing of wood and for working in hard-to-reach places;
  • 3/8 "or 0,325. these saw elements are most often used. than 80% of chainsaws produced today are equipped with just such chains;
  • ¾ inches or 0.404 are fairly large chains that are mounted on professional chainsaws for work on aerated concrete and other solid materials.

It should be remembered that the larger the pitch of the chain, the higher its performance. It should be borne in mind that with increasing pitch, the cut width increases, so in order to overcome the resistance of wood, a large and powerful tool will be required.
The next criterion by which the saw elements are divided is the thickness of the shank. This parameter must match the size of the groove of the chainsaw tire. This condition will increase the reliability of fixing the chain on the tire and reduce the risk of slipping of the saw element when working with the tool. According to this parameter, the chains are divided into the following types:

  • With a shank thickness of 1.1 mm. chains of this standard size are used to equip household mini-saws;
  • With a shank thickness of 1.3 mm. semi-professional chainsaws are completed with these chains;
  • With a shank thickness of 1.5 mm. chains with this standard size are used to equip powerful household chainsaws;
  • With a shank thickness of 1.6–2 mm, they are used exclusively for installation on professional and industrial chainsaws for working on concrete.

A few other important parameters that are used to classify chainsaws are the height of the saw element profile and its cutting depth. According to the profile height, chainsaws are divided into the following types:

  • Low-profile. increase the support area of ​​the cutting link, which, if necessary, allows you to get thin chips. Chains of this kind are considered the safest for the operator;
  • High-profile. such chains significantly increase the performance of the chainsaw, but are more dangerous for the operator.

Depth of cut is the size of the gap between the cutter limiter and the upper edge of the cutter. The most demanded in the market are chains with such a depth of cut:

  • 0,025 “- used to equip small household chainsaws;
  • 0,03 “- are used mainly for work with semi-professional tools;
  • 0.07 “- chains with such a cutting depth are mainly used to equip chainsaws for felling.

It is the cutting depth that largely determines the performance of the chainsaw. But do not forget that the larger this parameter, the more the chainsaw will vibrate.

How to choose a chain for a chainsaw. expert advice

Many novice gardeners sometimes think about which chain is best for a chainsaw. Despite the many factors by which the saw elements are divided, in practice, choosing a chain for a chainsaw is quite simple. First of all, you need to study a number of rules:

  • Choose the chain that is best suited specifically for your chainsaw model. At the same time, consider the saw power and recommendations in its operating instructions;
  • Pay attention to the material from which the saw element is made. Remember that a diamond chain is much more reliable than a steel product;
  • When choosing, you will need to determine the chain pitch of the chainsaw. for regular work on felling, you should choose chains with a step of 3/8 ", and for irregular operation it is better to give preference to chains with a step of ¼";
  • Pay attention to the angle of sharpening the chain. for sawing dry trees it is better to buy a chain with an angle of 30 °, and for sawing wet logs you can buy a saw element with an angle of 10 °. The labeling of this parameter is indicated on the packaging of each circuit;
  • Make sure that the chain length corresponds to the size of the tire. otherwise the saw element will sag, or you simply will not be able to install it on the chain of the chainsaw;
  • Be sure to learn the number of chain links. The more of them, the more productive will be working with a chainsaw.
  • Best of all, if a self-sharpening chain gets into your hands. it is easier to use, although it costs a little more.

Видео: China Rivets For Chainsaw Chain How to Rivet


In any case, if you are afraid to make a mistake, or do not want to deal with each of the parameters, you can turn to the table of saw chains for help.
With it, you can accurately select the chain specifically for your model chainsaw.

How to tension a chain on a chainsaw?

Installing a chain on a chainsaw may seem like a fairly complicated task for beginners. However, one should not be afraid, because everyone can correctly put a chain on a chainsaw. First of all, you need to remember that to put a chain on a chainsaw, which you just finished sawing trees, does not work. In this case, the saw element will be compressed, which will lead to retraction and deformation of the tire. It is best to install the chain on a cold chainsaw. In this case, you must adhere to a certain procedure:

  1. Before installing the chain on the chainsaw, make sure that the tool is turned off and it will not start up without permission;
  2. After this, it is necessary to remove the protective plastic cover on the side of the chainsaw and unscrew the bolts;
  3. Next, you need to decide which side to put the chain on the chainsaw. The saw element must be installed so that the cutter located on the top of the tire is directed towards the chain;
  4. Then put on protective gloves, fasten the tire to the chainsaw and begin to rotate the chain along the tire;
  5. If the chain sags, the chain is tensioned on the chainsaw. To tighten the saw element, it is necessary to use the tensioner, which is located on the right side under the protective pad. Most often, this mechanism takes the form of a conventional bolt;
  6. Next, slightly unscrew the side hardware that is used to secure the tire;
  7. Use the adjusting screw to select the optimum tension. Having done this, screw the hardware to the end. Then reinstall the protective pad.

If you did everything correctly, then the chain on the bus will rotate smoothly and without creaking sounds. If you made a mistake during installation, then during rotation the chain will stop quickly and sometimes wedge.

How does the chainsaw chain lubrication system work?

The chainsaw is lubricated by a lubrication system, the main element of which is the oil pump. The lubrication system works according to a certain principle: with an increase in the number of engine revolutions, the gear located on the main shaft makes the pump shaft move, using a worm gear for this. At this time, the shaft by its rotation creates a pressure inside the oil line, which pushes the oil towards the tire.

China Rivets For Chainsaw Chain How to Rivet

The oil line ends in the area of ​​the longitudinal groove where the tire is in contact with the crankcase. When mounted on a chainsaw, the tire groove is in contact with the oil channel, thus obtaining the oil necessary for operation.

How is a chainsaw lubricated?

It should be noted that during the operation of the chainsaw, oil receives not only the tire, but also the tool chain. After the oil gets on the tire, the saw element is turned on, the links of which are also equipped with grooves or holes. With an increase in the number of engine revolutions, the speed of the oil along the tire and chain also increases.
Some models of modern chainsaws are equipped with special mechanisms that allow you to increase or decrease the amount of oil necessary for the proper operation of the chain. Lubricating a chainsaw with this function is quite convenient, as it allows you to save oil and eliminates slippage of the chain on the tire from an excess of lubricant.
Very often, beginners do not know how to lubricate the needle bearing of a chainsaw. This element requires lubrication no less than the tire and chain. Specialists advise using special greases from Stihl and Husqvarna as a lubricant. To add grease, use a syringe so that all the agent gets inside the bearing.
If you ignore the need for lubrication of the needle bearing, then the result will be the replacement of the drive roller and a number of other important parts of the chainsaw.

How to shorten the chain of a chainsaw with your own hands?

Some novice gardeners do not know what to do if the chain on the chainsaw is stretched. In this case, it will need to be shortened. To do this, you need to prepare the necessary tools:

  • Hammer and vise;
  • Beard;
  • File;
  • Pliers;
  • Electric welding machine.

To shorten the chain on the chainsaw, you must act in this order:

  1. First you need to disconnect its links. You should not use an angle grinder for this, since carbide links can be deformed due to this. It is best to use a file or file for this. Each link needs to be sewn from both sides, and then the rivets should be unscrewed from the chain with the help of a beard;
  2. Once you have managed to unfasten the chain, you do not need to immediately discard the disconnected rivets. They may be required when you make further repairs to the saw element;
  3. In the next step, you will need to rivet the chain, that is, connect the shortened saw element. To do this, you need to count the teeth and connect the links to the rivet, pressing their side parts;
  4. After that, you need to start welding the links. In this case, you must act very carefully, otherwise poorly welded parts of the chain will scratch the chain of the chainsaw;
  5. Further, for many beginners, the question arises: "How to rivet a chainsaw chain?" To do this, use a conventional drill. Take a nail with a diameter equal to the diameter of the inside of the rivet and cut a 7-centimeter workpiece;
  6. Next, fix the workpiece in the drill head. Then fix 2 files on the beam so that the distance between them is equal to the width of the inner part of the rivet. At the same time, you are required to achieve maximum accuracy. Then you just have to take care of the uniform supply of the bar to the workpiece.

After you have been able to repair the chain for the chainsaw yourself, you need to inspect it for burrs. If necessary, remove them with a needle file. In the future, if the chains on your chainsaw break often enough, we advise you to purchase a special rivet for chains. It will help you save a ton of time and effort.
Many experts also advise replacing conventional chains with saw elements with victorious brazing. The fact is that the winning chain for a chainsaw is much more reliable and will not break as often as ordinary saw chains. However, the performance of the saw when using such a saw element will drop a little.

Chainsaw Chain Lubrication Device EVDIRAL.RU

If no oil enters the chainsaw chain during operation, you need to find the cause of the problem. In fact, there can be many reasons that affect this process.

If no oil enters the chainsaw chain during operation, you need to find the cause of the problem. In fact, there can be many reasons that affect this process. You should disassemble the chainsaw and identify the main problem. The likely premises of this process will be described below.

China Rivets For Chainsaw Chain How to Rivet

There may be several reasons for the lack of oil supply to the chain during operation of the chainsaw and to identify them you need to disassemble the chainsaw.

Possible causes of non-receipt of fuel

Oil on a chain can not come only in the presence of 2 breakdowns. These include:

  • difficulties with air leaks;
  • damage to the oil pump drive.

The main characteristics of the chainsaw chain.

The main reason for the breakdown is air leaks. This can happen due to depressurization of the oil hose during operation of the chainsaw. In this case, remove the hose from the hole. This must be done in the place where it is connected to the crankcase. Then the hose sits on the sealant and is installed in its usual position. If this did not help, then elasticity was most likely lost. For the upcoming operation of the chainsaw, purposefully change the hose.

The second reason is the failure of the oil pump drive. In common people, this part is called a worm. When the drive fails, oil will not flow to the circuit. The oil pump drive is a round plastic ring with grooves inside it. The constant introduction of the chainsaw leads to the wear of the internal parts, as a result of which there is a puncture of the iron hook located inside the drive. After this breakdown, the oil stops flowing to the circuit.

You can remove problems without the help of others or under the guidance of professionals.

Features of the lubrication system and oil selection

Fuel tanks are selected in strict accordance with the volume. With the highest output, it is allowed to choose components with a small amount of oil.

System repair chain lubricant chainsaws

TO EARN ON YouTube For you: 1. Make your own channel 2. Connect it to AIR by filling out

System repair chain lubricant chainsaws

not chainsaw lubricant.

Chainsaw fuel system: 1. fuel filter, 2. carburetor, 3. manual pre-pump.

If you correctly adjust the carburetor, the fuel will be spent in an acceptable volume. Otherwise, it will end too quickly.

Slow fuel reduction during saw operation is a normal process. If it is absent, the chain is not lubricated correctly, so working with a chainsaw should be coordinated. It is necessary not only to be able to eliminate breakdowns, but also to independently identify them.

You can change the flow of fuel manually. The correct operation of the lubrication system is determined by holding the tire. If oil splashes appear, then everything is set up correctly.

It is desirable to make a cut with a significant amount of lubricant. If you have to work with soft wood, a small amount of fuel is supplied.

Chain should always be well oiled. This will avoid smoke and further failure of the entire chainsaw. If the oil leaks or does not flow at all, it is necessary to identify the cause of the breakdown. Operating the tool before repair is not recommended.

When choosing fuel, you need to do it right. The desire to save money leads to the fact that the circuit quickly fails. In order to avoid unpleasant consequences, it is undesirable to choose oil, the manufacturer of which is China. Preference should be given to the original firms. In their price category they are much higher, but their quality is better.

Circuit Troubleshooting

In operation chainsaws needed constantly monitors chain lubrication. After all, it is this part that works in the most difficult conditions. The chain undergoes constant overheating, dust and abrasive particles are clogged in it. All this negatively affects its life. Correct the situation will allow a special grease. It is fed to the chain from the tank, thereby ensuring unimpeded operation.

If lubrication does not occur during operation, there is a high likelihood of overheating. When no oil enters, the chain begins to stretch. At the same time, there is a likelihood of it jamming or spontaneous jumping off, as a result of which a person may get seriously injured.

The channels through which the fuel is supplied can become clogged with small particles, so it is advisable to periodically clean them. It is important to monitor the oil level in the tank. Debris in the channel becomes a common cause of chain brake failure. This may adversely affect work.

Continuous cleaning of the channels and general care of the chainsaw will allow the tool to function for a long time.

But what to do if all the recommendations are followed, and the oil still flows. Make sure that the chainsaw is working properly. It is likely that it was collected incorrectly. If the breakdown was not detected, it is recommended to take it to the workshop. In some cases, it is necessary to replace the pump, but this must be done if the saw is new. Old tools are leaking due to the deterioration of the tank.

The current state of the chainsaw can only be evaluated by a specialist. In the absence of knowledge or self-doubt, repair of the tool is advisable to entrust to a professional.

Chainsaw Chain Lubrication

I want to use the TAD 17 chain on a Stihl 250 chainsaw. In winter, it
very thick, will the oil pump be worse from this, will it come out
is it out of order from overload? And if it’s possible, what kind of principle is there, in
pump, oil supply to the circuit?

The oil pump, which is set at 180. 250 Styles. in general
almost indestructible. he has a brass cylinder. Even working off
eats twice as long as aluminum.

And the principle of operation is very simple. Sorry, no illustration, and yes
not seen anywhere. If in words. two parts, a cylinder and a rotating
him a plunger. The plunger has a milled scaffold at the end. At
By rotating the plunger moves slightly back and forth.

Two holes are made in the cylinder against each other. When flax
the plunger approaches the intake hole, it is slightly pulled out
cylinder. a vacuum is created and a little oil is absorbed.

when the flat turns to the discharge port, the plunger
moves into the cylinder. pressure is created, oil goes through the channel to
to the bus. As you can see, in principle, damage the pump as thick as you like.
it’s impossible to oil. it just won’t go, and that’s it.
_

If the oil flows out of the tank in the idle mode of the chainsaw. this
fine? Those. if you have to cut a little, then pour
a little bit? And then during the inactivity of the saw, oil from the tank flows
completely.

Not. This not normal. The problem is either with the oil pump or with the oil itself.
a tank. In general, oil and fuel consumption is usually 1 to 1.
_

Leading tire sprocket on a chainsaw, how to lubricate? Will it fit
For example, Mobil or Jcb hydraulic grease? What do you think?

sprocket stars on all tires (except calm), if not smeared
the bearing may crumble, and then the tire ends, but about calm
tires. on the one hand it’s like a plus, but on the other. I’ve seen
Shtilevskie almost new tires with burnt bearings.
_

A chainsaw drives a chain lubrication oil. At idle it pours very slowly
if you give gas, it spills. In five minutes, all the oil is working
spills out.

Does not respond to the position of the adjusting screw. Also a little
(0.5-1 mm), backlash asterisk, which rotates the chain. Who faced
with such a thing?

You need to remove the asterisk and sort out the oil pump, and hoses in gusts
verify. The leading sprocket must have a small
backlash. It should not be hard, vibration will go to the crankshaft.
_

The holes match when I put it, maybe when pulling up the chain, the hole
leaves because of this oil does not get on the chain, but the chain, you can
use one, how to stupid, shoot to put a new, old
sharpen, etc. in a cycle of three chains do until the bus is off?

An oval hole for lubrication on the chainsaw body is made with such
so that for any tire position within the range
chain tensioner alignment of the lubrication holes on the tire
and the case did not disappear.

Ideally, a set of chains, when using them on a saw in turn
in cyclic mode, and the bus should become unusable at the same time.
There are two lubrication options. Well, in the sense. through which oil is supplied.

Most tires have a separate grease hole
to the chain, and these big ones are used for stretching. And some (and
quite a lot) do not have a separate lubrication hole.

And for lubrication, a free tension hole is used. In that
In case it will necessarily communicate with the groove of the tire. Can
check with a wire. This is neither good nor bad, it is a feature.

So. in the second case, quite large losses are possible
oil if the sprocket cover does not fit snugly. Then it
goes right through (unlike tires with a separate hole), and
dripping down.
_

After a minute of working the chainsaw a few times a little
pressed the gas oil to lubricate the chain began to act very strongly on
chain, that even under the saw a pool of oil was formed. Where is the screw
adjust the oil supply to the circuit? And how to do this
adjustment?

Your model does not have oil flow control for the oil circuit
feeds automatically. Inspect and clean thoroughly.
oil intake holes on the tire, carefully install the tire with a chain.
In theory, it should help.

If a puddle of oil forms under the saw, the most likely is
loose tire or skew clutch cover,
in
result between oil pump outlet and lubricant
a hole appears in the hole of the tire, into which the oil leaves.
_

Tell us more about the oil pumps installed in chainsaws.

Very rarely on modern chain saws (including electric ones)
non plunger pumps are used. You could say, not even
apply
at all.
All of them work according to the same scheme.

Key Details.
aluminum cylinder, rigidly fixed in the body and steel
plunger with
plastic gear rotating in this cylinder.
How it works: There is one small hole at the blind end of the cylinder. There
there is one more opposite.

One of them is suction, the second is
pumping.
There is an oblique ring groove on the plastic gear of the plunger,
which is combined with a metal rod in the housing.

Mechanics: When the plunger rotates due to the oblique groove, it also
performs back and forth movements back and forth on each
turnover.

Hydraulics: As the cut-off portion of the end of the plunger approaches
the suction hole, the plunger is pulled. a small
underpressure,
a portion of the oil is sucked into the cylinder.

Turn the plunger about halfway
turnover. cut-off area (of course, with located in it
oil)
goes to the discharge port.

At this time the plunger
moves towards the blind end of the cylinder. Some
oil pressure
goes into the lubrication channel.

Now about the differences in design:
The gear on the plunger may be metal. In this case
the worm on the crankshaft will be plastic, there’s no getting anywhere, should
to be
weakness.

The pump housing may be metal. Well, not bad, of course, but not
fundamentally.
And most importantly. the adjustment of the oil supply. In the first case, when
axial movement of the plunger is carried out by an oblique ring
the groove.

Performance adjustment is not technically feasible. If the longitudinal movement is due to an oblique cut
back of the plunger, feed adjustment possible.

Using different
options for an adjustable emphasis of a back part of a plunger length changes
its axial displacement, and, accordingly, the quantity
captured for
one revolution of the oil plunger.
_

how often do you need to syringe a chainsaw tire? And as I understand it, grease
should be consistent, like lithol approximately? Or the same is acceptable
transmission?

I bought a new chain, installed, it works fine. But after a couple of minutes,
the hole in the tire for oil supply is blocked and the chain runs dry.

Literally
enough for one cut. Again, disassemble, clean, run. Without sawing
the chain is lubricated. And after one cut, the tire is again clogged with chips.

Gazanut
I didn’t try, because I didn’t manage, the chain almost wedges, I don’t
scroll, and the tire and chain are terribly hot, the chainsaw stalls.
Tell me what the problem is,
with the old chain this was not observed?

There is a big suspicion that in fact the lubricant oil is coming,
just because of the large amount of dust (maybe cut now
dry
wood, if not dust) falling into the groove of the tire and onto the chain
He is not visible.

What is the condition of the tire itself? Especially important in this case
condition of the driven sprocket and tire spacers (on them during
work glides
chain) in those places where the sprocket’s teeth “dive” inward during rotation
tires or appear from there.

Also in case of excessive wear.
struts
could decrease below acceptable level the depth of the groove of the tire and
chain shanks cling to the bottom of the groove when moving.

In this case
will also be
excessive heating of the chain and bus.
After all, apparently this chain is not the first for the tire.

In addition, the fact that the saw stalls when the chain is jammed,
indicates a failed clutch. There or dirt between
clutch cams
and his cup, or the cup itself is deformed. Possibly stretched
clutch springs.

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