Why the chain on a chainsaw becomes loose. Chain saw tensioning algorithm

Why chainsaws pull quickly?

A quick check of chain tension is straightforward: take hold of the sprocket and pull it upward. If the chain is tightened properly, the tail will be 1/3 of its height into the bar groove. A high tensioning value indicates too much tensioning, a low tensioning value indicates too little tensioning.

The saw should normally run smoothly along the guide bar without exerting excessive force. If the element is difficult to move, it is a sign of excessive tension.

If too much tension is put on the cutting attachment the guide bar gets hot and wears out, it puts more strain on the engine and wears out quickly. Do not operate the machine if the chain is loose, because when you are sawing, the chain can get caught and cut off, endangering the operator. The chain can come off the tire and cause injury to your limbs, and often damages itself and the tire. Also working with a loose chain element leads to one-sided wear of the bar, after which the machine stops making straight cuts and the saw moves sideways.

Partner chainsaws. troubleshooting

Like other household appliances equipped with an engine, Partner brand chain saws occasionally need to be repaired. This can be due to improper use of the saw, or with the banal wear of parts. Whatever it is, the chain saw needs to be repaired, and it is quite possible to do it with your own hands.

How to fill your Partner chain saw?

As the manual indicates, to refuel your Partner chainsaw, you should use gasoline, a brand not less than AI-92. It must be mixed with oil that is suitable for 2-stroke engines.

The optimum ratio of gasoline to oil for the Partner chain saw is 50:1, which means that 20 ml of engine oil should be diluted into 1 liter of gasoline.

How to Adjust the Ignition on a Partner Saw?

If you can’t figure out why your Partner chain saw won’t start, first check the ignition system of your tool. To check and adjust the clearance, look like this:

  • First remove the cover to which the starter is attached. To do this, we suggest using a T27 hex bit, tools from the chainsaw kit and additional attachments;
  • Carefully examine the ignition coil, the flywheel and magnets, and especially the clearance between these parts. Use a specially designed gasket to do this;
  • Setting the ignition on the Partner chainsaw is done by turning the screws, which brings the coil and flywheel closer to each other.

How to remove the clutch on your Partner chain saw?

If your Partner chain saw starts and shuts off when you apply gas, you will often want to have the clutch repaired. However, not all novice gardeners know how to remove the drive sprocket from a Partner chainsaw. You can do it in this order:

  • First turn the lever and remove the chain brake cover;
  • Unscrew the nuts securing the clutch system with the wrench from the Partner chainsaw kit;
  • Remove the clutch from your chainsaw and disassemble it completely. If necessary, replace worn parts and clean the walls of the clutch components.

How to change the oil pump on your Partner chain saw?

If you find that the chain on your Partner chain saw does not turn, then the cause of the problem is likely to be a worn or broken separate pump designed for pumping lubricant into the chain. The oil pump is made up of 2 parts. the storage chamber and the working part. Repair the pump is made with disassembly of the mechanism, but to take any action with his working part is not recommended. The next steps are as follows:

  • Carefully inspect the inlet and outlet tubes, through which the lubricant passes. as a rule, all the faults of the pump are related to them;
  • If the channels are clogged, all debris must be removed. If after reassembling your Partner you may have to replace the pump completely and blow it out with compressed air;
  • If there are cracks in the channels, they need to be replaced;

If after reassembling your Partner chain saw the lubricant is again not flowing to the saw chain, the pump will need to be completely replaced.

How to Adjust the Carburetor on a Partner Chainsaw?

Adjusting the carburetor on a Partner brand chainsaw differs slightly from the procedure with other brands of chainsaws. The difference is in the markings and the meaning of the adjusting screws. Your Partner chain saw is equipped with three screws for adjustment: the left-hand fuel quantity screw, the right-hand fuel quality screw, and the idle speed “T” screw. All of these screws are located on the left side under the top cover of the chain saw. To adjust the carburetor on your Partner chain saw it looks like this:

  • Remove the cover and clean the parts underneath;
  • Turn both screws clockwise all the way out and then turn them 1/5 of a turn in the opposite direction;
  • Turn the clamp slowly until you hear the engine speed go up. Immediately after that, turn the clamping screw ¼ turn the other way. As a result, the Partner chainsaw should hold the idle speed steadily;
  • Then set the maximum rpm for your Partner chain saw with the quality spindle.

How to properly adjust a chainsaw. tips for beginners

Most service centers adjust chain saws with special equipment. Each model has its own optimal values for screw rotation angles. As a rule, chainsaws do not require frequent carburetor adjustments. Nevertheless, they may be necessary in certain cases:

  • If the motor’s pistons are badly worn, this is the reason why the chainsaw shoots;
  • If there is a blockage inside the carburetor as a result of the use of low-quality gasoline and failure of the air filter. in such cases, not only adjustment, but also flushing of the unit will be required;
  • If the safety cover is damaged it is also often the reason why the chainsaw throttles on its own.
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There are a number of signs that directly indicate you need to adjust the carburetor:

  • The engine does not run at idle or the chainsaw does not start at all. the reason lies in a bad fuel mixture;
  • Fuel consumption and exhaust gas volume are sharply increased. this is a consequence of oversaturation of the carburetor with the fuel mixture.

The carburetor adjustment scheme may differ for different chainsaw models. Regardless, the general principle remains the same.

  • L. This stands for “Low” and is used to adjust low RPM;
  • H. It is set to “High” and is responsible for high RPM;
  • T (S, LA). Used for adjusting the idle speed.

Before you adjust your chainsaw, make sure that the cutting chain is facing in the opposite direction from you. The chainsaw should be placed on level ground so that the chain does not touch other objects.

Before making any adjustments, carefully read the instructions in your Instruction Manual for your chainsaw. Adjusting the chainsaw carburetor consists of two stages. the basic, when the engine is not started and the final, when the chainsaw motor is warmed up and running. The procedure is as follows:

  • Slowly wrap the screws L and H in a clockwise direction up to the stop, then turn them one and a half turns counterclockwise;
  • Start the engine and let the chainsaw work for about 10 minutes at a low rpm;
  • Then proceed to the final adjustment. Before adjusting the idle speed you must turn the idle speed screw counterclockwise until the RPM is minimal, the engine is running stably, and the chain is still in place. If the motor stalls at this screw position, the screw should be turned clockwise. If adjusting the idle speed on the chainsaw has caused the chain to spin at idle, the screw needs to be turned slightly counterclockwise;
  • Then you need to check the chainsaw for motor acceleration. To do this, push the throttle lever gently. If the revolutions are slow, then you need to turn the L screw counterclockwise a little;
  • Next, adjust the maximum RPM of the engine. You can check if there is a malfunction in the ignition system. If it does, turn the H screw counterclockwise;
  • After adjusting the acceleration and maximum rpm, you need to check the chainsaw’s idle speed again. That you have done everything correctly is evidenced by the absence of movement of the chain at idle and a steady running of the motor,

After completing the above steps, you can continue to work with the tool. To avoid having to adjust the carburetor again in the near future, use only quality fuel and engine oil, and try to work with a chainsaw as carefully as possible.

Tire problems

A common problem today is the unreliable fixation of the tire. It is characterized by the following features:

  • Body and guide element are bolted together.
  • The connection is made by means of two plates, one on the body and one on the other, which is designed to guide the chain at the moment of operation.
  • The drive sprocket and the bar support are protected by a special casing to prevent damage to the main elements.
  • If the locking bolts are loosened, the element in question begins to move and vibrate at the moment of operation. This problem can be solved by tightening the fasteners.

Other defects simply cannot be solved. In most cases, defects become the reason why you have to buy a tire and replace it.

How to determine chain size and pitch

There are three important parameters that are the same for chainsaws and electric saws:

Table 1 shows the spacing between the rivets, which will allow the owner to correctly determine the chain pitch. In addition, the instruction manual of the original chainsaw or chainsaw will always indicate the pitch, length, number of chain links.

How To Tighten a Chain Saw Chain on Home Depots Ryobi 14″. RY3714

The total chain length depends on the exact number of teeth on the inside. Count the number of drive links, this is the length of the chain.

Example: For a 40 cm long bar, chains with different numbers of teeth can be used, e.g. 57, 56 or 55. The number of teeth will depend on the model.

It is a mistake to assume that you can put the same chains on all 40 cm long tires.

It is also important to know the thickness of the shank (drive link). The shank holds the chain on the bar. To understand how to measure the thickness of this part, see table 2.

Table 2. Shank Thickness.

For non-professional chainsaws, the most common chain pitch is 0.325 inches. These chains are ideal for chain saws up to 2,500 watts. To select a chain it is better not to independently, and with the help of the seller or the expert, which work with accessories to chainsaws and electric saws.

To sharpen the chain, probably, you do not need to put much effort, because it is not very difficult, in this article we will analyze how to sharpen the chain on a chainsaw, and consider all the smallest details.

First you need to know the reasons why the chain is blunt.

How to sharpen a chain on a chainsaw?

The chain saw tooth you want to sharpen has a heavy geometry.

It has two cutting edges. one on the side and one on the top. one of which is beveled at an angle that determines how the chain should move, and it makes the operation a little tricky.

A chainsaw with high power chops all the wood, and with the limiter you can achieve what the thickness of the chips will be, small or large.

Why the chain is blunt?

  • If you work too hard with a chainsaw, it will soon become blunt. And you have to sharpen it a couple of times a day.
  • Also the main problem why the chain is blunt is the ground. If you accidentally hit the ground, you can go straight to sharpening, because the saw won’t cut as deep into the ground as it should, it won’t cut as deep into the ground and the chips will be much shallower than they were.
chain, chainsaw, becomes, loose, tensioning

Tooth of the chainsaw after hitting the ground or sand with a stone

You have to sharpen it as soon as you see that the saw is not cutting as hard as it should be, so go and sharpen the teeth, because if you sharpen it, you have to cut more material from it.

The main test in sharpening the teeth is to sharpen a little bit more.

If the chain is sharpened, it cuts into the wood very quickly. Well, when you’re constantly pushing the feed to the max, you definitely have to sharpen it.

A chain that is already blunt is very easy to figure out as written above. it’s a fine chip.

Reasons why it is impossible to saw with a chainsaw in which the teeth are blunt:

  • Your body is very tense because there is a lot of vibration
  • Cyclic load
  • Immediately noticeable deterioration in cutting
  • Of course the performance decreases
  • Fuel and oil consumption increases a lot
  • Also a very high wear and tear on all parts of the chainsaw, which will soon lead to repairs
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How to sharpen the saw, what tools to use and the right angle?

Let’s start one by one, the sharpening angle of the chain is measured by your use case, let’s say the higher you take the angle, respectively the stronger and more productive it is for sawing soft wood.

Sharpening angle for the link that cuts, it affects the chain, on average it should be from 50° and up to 60°

And when we reduce the angle, then the saw will enter very smoothly into hard trees, and accordingly, the vibration is much reduced, and does not recoil into your body.

Now we take a protractor and measure, it is strictly forbidden to sharpen the chain more than 35 degrees or less than 25 degrees (exception is the chain for longitudinal sawing, which has an angle of 10°)

Now it is necessary to know what tools should be used for sharpening chains. Since the tooth contour itself is similar in shape. The file has to be of small (round) diameter.

Sharpening should be done very precisely, you should hold the file clearly, without changing the angle, its upper edge of the file, it should protrude in the upper edge of the tooth, about 1/5 of the diameter of the file.

An important step is which parameters of the teeth (chain), because it is for this step it is necessary to use files for chain pitch. In standard cases this diameter is 4-5.5 mm.

A file should be kept under a clear angle of 90° in the plane (vertical), well, and 30-10 ° in the (horizontal).

Technical Tips- How To Tension Chainsaw Chain

To sharpen the teeth using only files is a very time consuming process, and many people undertake other tools for sharpening, these are also kits that go in addition to the chainsaw itself, or if not included, they can be purchased at a gardening equipment store.

Now let’s consider in more detail the tools with which you can sharpen chains:

  • File (round), which is attached to the round holder.
  • Flat file to be used for sharpening the limiter.
  • The jig that provides the last operation.
  • A hook to clean sawdust from sawdust.

On a file (round) which is fixed in a holder, there are special lines thanks to what it is correctly located in relation to a chain, and does not leave aside, and the plate as much as possible rests against a crown of tooth, and the file thereby becomes the bottom cutting edge.

chainsaw troubleshooting. fix it yourself

Chainsaw. a very useful thing in the economy. After all, with it quickly and relatively easy to solve a lot of tasks of home construction, gardening and landscaping. Chainsaws. a rather capricious tool, but with the right handling it is an indispensable helper.

The fuel hose has a weak point: the guide bar. That’s where most of the burden of operation is on the carburetor.

This means that knowing why tires fail more often than other chainsaw parts and how to properly replace them if necessary will help you save money and time during seasonal or project work with your tool more than once.

chain, chainsaw, becomes, loose, tensioning

No gasoline in the tank

If you have trouble starting a chainsaw, many people immediately blame the carburetor. In fact, there are several variants, and the cause of the problem can be anything:

  • The air and/or fuel filter is clogged. The problem is solved by the filters cleaning.
  • No fuel in the tank. Yes, it happens and such reason. some owners forget about such insignificant detail, as a gasoline saw filling and think that a couple of liters of gasoline enough for six months. It’s the best way to solve the problem: you don’t need to keep fuel in the tank for more than 14 days.к. gasoline evaporates and loses its octane rating.
  • Check the hose from the fuel tank to the carburetor. it could be clogged or broken, so gasoline does not flow into the tank.
  • No spark on the spark plug. Why is there no spark. there can be many reasons: no contact, the spark plug must be replaced or it is flooded. Why a spark plug fills on a chainsaw. this is another question. But if this happens, you need to dry and reinstall, then check for spark. If there is heavy soot on the spark plug, it is recommended to replace it.
  • Check the muffler for soot. If there is soot. thoroughly clean the muffler, but it is still recommended to take the chainsaw to the service center to check the cylinder and piston there, t.к. Carbon deposits are a sure sign that the components of the cylinder and piston group are not working properly.
  • Clogged carburetor. How to properly adjust the chainsaw so that the carburetor works well was discussed in a separate article.

If none of the above methods did not help, then the cause is more serious. the breakdown of one of the nodes of the connecting rod and piston group. In this case it is recommended to take the chainsaw to a service center.

The engine stalls

The engine is running, but the chain saw stops when idling or under load. In this case, most often the same actions as described above should be performed.

chain, chainsaw, becomes, loose, tensioning

How to adjust the chainsaw depends on exactly when the problems start:

How to Determine Chain Size and Pitch

There are three important parameters that are the same for chainsaws and electric saws:

Table 1 shows the rivet spacing, which will allow the owner to correctly determine the chain pitch. In addition, the instruction manual of the original electric saw or chainsaw will necessarily indicate the pitch, length, number of chain links.

The total length of the chain depends on the exact number of teeth on the inside. you must calculate the number of drive links, and this is the chain length.

Example: for a 40 cm bar, you can use chains with different numbers of teeth, such as 57, 56 or 55. The number of teeth will depend on the model.

It is a mistake to think that you can put the same chains on all 40 cm long bars.

It’s also important to know the thickness of the shank (drive link). The shank holds the chain on the bar. To understand how to measure the thickness of this part, see table 2.

Table 2. Shank thickness.

The most common chain pitch for non-professional chainsaws is 0.325″. These chains are perfect for chain saws up to 2,500 watts. It is better to select a chain not on your own, but with the help of a salesperson or a specialist who works with components for chainsaws and electric saws.

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Why the chain on a chainsaw loosens?

An experienced chain saw operator who knows his trade well checks the tension of the chain and the sharpness of the chain saw teeth before starting work. If you don’t pay attention to the condition of the tool, its performance is greatly reduced in the process of work.

Properly adjusting the chain tension of the chainsaw will extend its life, as well as prevent it from slipping off the bar while you’re sawing.

Chain tensioning is very important for chainsaw performance. If it is loose, it can easily become damaged or slip off the bar while you are sawing. On the contrary, if the chain is tightened too much, the pressure on the engine increases. This significantly shortens the life of the chainsaw because it begins to wear out much faster. A chainsaw chain has another important purpose: it keeps the bar from slipping sideways when idling.

Tensioning Procedure?

To check the tension in the chain, pull the chain up by the tooth in the middle or at the outer end on the outside of the bar. If the tension is set correctly, 1/3 of the tail will be in the groove of the chainsaw bar. If it is too tight, the chain is too tight and if it is too tight, the tension is too weak. Free movement of the chain on the bar is important. This can easily be checked by trying to turn it by hand.

The tensioning process is not laborious, you just need to understand the order of all the necessary actions and pay due attention to this procedure.

Before you start you should make sure that the saw is not running and that it cannot be started accidentally. While wearing protective gloves, rotate the chain with your hand along its axis. If it is too loose, there will be a large amount of slack in the back of the bar. This is the factor that you should look for when checking if your chainsaw needs adjustment before you start work.

The first thing to do is to look at the tensioning mechanism to the right under the side cover that secures the axle of the tool. Most often this mechanism is a simple bolt, but in some cases chainsaws are equipped with a special tensioning system where no additional devices are required.

After that, you need to slightly unscrew the hardware on the side that is designed to hold the bar in place. Next, use the adjustment screw to find the right tension by moving the axle forward. To check that the chain runs smoothly, you need to rotate it more often in the direction in which it travels during operation.

After adjusting the chain with the tensioner, tighten the bar treads securely. If it is adjusted correctly, the chain will move smoothly. It must not choke and must have a certain amount of inertia.

A wrong adjustment will cause the chain to stop suddenly and get stuck at times. Note that this is the case when the tension is too great. Since this has more of a negative effect on the tool, it is always better to adjust the chain with a little slack.

To extend the life of the chain saw, this adjustment should be made as often as possible.

Remember that it is not permissible to adjust the tensioner when the tool is hot.

Once cooled, the chain compresses, so if it is tightened too much, it can pull on the tire and deform it, causing permanent damage to the tool. Make sure to cool the chainsaw before adjusting it.

Diagnostics and proper care of your chainsaw chain

Your chainsaw’s productivity depends on a number of factors:

If the tightness affects the performance of the chainsaw, the sharpening of its teeth #8211 affects the cutting rate. That is why it is important to pay special attention to this aspect. When the teeth are well sharpened, the cut is much more efficient, precise and safe.

The regularity of the sharpening procedure does not have any special standards, but professional sawyers recommend that it be performed several times a day. This is due to the fairly rapid blunting of the teeth during heavy cutting.

Most chain dullness is measured with reference to chainsaw performance. Also, the tool needs sharpening when the bar starts to go sideways. Another measure of sharpening is the condition of the shavings. As a rule, properly sharpened tines produce a uniform chip. In this case sawdust has a rectangular or square shape. If the chain is blunt, dust prevails in the chips, and the shape of the sawdust resembles the needles of a simple hacksaw.

If you regularly check the tension of the chain and sharpen it in time, your chainsaw will last a long time. over, even very hard wood is sawn without any trouble at all.

If you are inexperienced, it is best to call in a professional. Professional woodcutters determine the condition of a chainsaw and its components at the first inspection. They will tell you if the chain is worn, the tension is too tight, and the teeth are sharp.

How to tension a chain saw chain correctly? Answered by !

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If you look at the work of a professional woodsman who spends almost all his time in the woods with a chainsaw, you will see that he never starts up the saw before he has checked the tensioning of the chain and the sharpness of the teeth. This is very important for productive work.

Chain tensioning is a very important factor. A chain that is loose will wobble and could jump off the guide bar or even burst. Overstretching is also bad. it’s fast wear and tear and increased stress on the saw’s motor. over, in almost all saws the tensioning of the chain fixes the guide bar and the guide bar runs free left and right when the chain is free.

Chain tightening is not a big deal, you just have to learn the procedure and do it regularly.

For your safety make sure the saw is off and cannot start accidentally. Turn the chain with your hand, preferably with special gloves, along its travel. If the chain is stretched, the sag at the bottom of the bar is immediately noticeable. The amount of tension in the chain is precisely determined by the lower cam track.