How to lay a chainsaw starter spring. How to refuel a spring in a chainsaw starter. The main elements of the manual trigger mechanism

Do-it-yourself high-quality chainsaw starter repair

• Common faults
• Starter repair work
• Practical Tips

A chainsaw is the main tool with which you can stock up on firewood for a bathhouse or a fireplace, you can also use it when building work in a summer cottage or in a personal home. Subject to all the operating criteria and the implementation of preventive measures that are provided by the manufacturer, the chainsaw can last a long time. Chainsaw repair partner 350 how to insert a spring into the starter. But after a while, small malfunctions may appear that can be dealt with on their own. How to wind a starter spring chainsaw starter repair (broken spring) 2 y. Back. Chainsaw starter repair how to repair pull the starter cord 4-5 times. For example, repairing a chainsaw starter with your own hands is completely within your power, subject to the sequence of operations.

Chainsaw starter device: 1 - starter screw, 2 - bushing, 3 - easy start spring, 4 - screw, 5, 6 - starter coil, 7 - deflector, 8 - starter cover, 9 - handle and cord, 10 - screw.

Typical malfunctions

The most common tool failures include the following:

• obstacles in the ignition system;
• stopping the chainsaw in the process of cutting;
• loss of power during operation;
• wear of some structural parts of the chainsaw (brake band, drive sprockets, anti-vibration parts);
• obstacles in the fuel supply system;
• starter related problems.

In addition, it is necessary to create a visual inspection of the chainsaw before performing work and preventive measures. A simple chainsaw starter repair is how to insert a spring into if the starter is broken. These include chain lubrication, fuel mixture control, and the presence of the required amount of oil.

The spark plug is turned out to check its condition.

Any of the defects is eliminated by our own technology. So, for example, the repair of the fuel system of a chainsaw should begin with an inspection of the corresponding filter. After that, the correctness of the carburetor regulation, which is carried out with the help of screws, is inspected. The gaps must be set in strict accordance with the manufacturer's annotation, which must be included with the chainsaw. The repair of the ignition system includes inspections of candles. If a strong deposit is detected, the gap changes or other visible damage is detected, this element must be replaced.

Starter repair work

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Difficulties in the operation of the starter may prevent starting the tool. In other words, after the cord is pulled, the chainsaw does not start working.

The causes of the malfunction are:

• breakage or crack of the pulley;
• broken spring;
• starter cable break.

Before you repair the starter, you need to prepare the tools with which to create work:

Chainsaw starter repair!!! With my own hands!!!

How to do it yourself starter on the chainsaw? How to bend spring on the starter chainsaws? How to wind spring.

Chainsaw Repair: Starter Spring Replacement

Repair chainsaw do-it-yourself replacement springs manual starter.

• a set of screwdrivers or a special tool that is supplied by the manufacturer with the tool;
• a rope that will be used as a replacement for a broken cord if necessary.

A large amount of black soot on the spark plug indicates a malfunction in the engine.

Before proceeding directly to repairing the starter and finding out the causes of malfunctions, it is necessary to remove it from the tool body. Chainsaw repair partner 350 video how to insert a spring into a chainsaw starter how. To do this, unscrew a few screws holding the side cover to which the starter is attached. This is done with a screwdriver or a specialized tool.

After the lid is unscrewed, it is turned over and inspected. Quality chainsaw starter repair how to bend the spring to install on. Next, unscrew the screw with which the starter is fixed. After that, the clamp and spring are dismantled for a smooth start. Now the pulley on which the cord is wound is available for removal. After the knot on the rope is untied, it can be pulled out from the pulley and replaced with a new one. Repair of a chainsaw partner 350 starter repair of lawn mowers, how to insert a spring into the starter. Provided that the loss of starter performance is associated with a break, this may be enough to eliminate the breakdown. However, the remaining parts that make up this element of the chainsaw should be carefully examined.

When inspecting the components of the starter, the following malfunctions can be detected:

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The most common damage to the soft start spring occurs at the end where it is visible when disassembling the housing.

1. The pulley may be damaged. There may be cracks or tears, and there is damage on the back. How to insert a starter spring correctly How to install a chainsaw starter spring The chainsaw starter cord is not but once hidden releasing the spring for. As a result of these problems, the tool cannot perform work.
2. Damaged soft start spring. In this case, both the spring itself may be mechanically faulty, and there may be defects in the place of its fastening. The weakest point of this element is precisely the mounting point and the tip of the spring, which is inserted into it.

If defective or partially damaged starter parts are found, they must be replaced with new ones. In this case, the new elements must correspond to the saw model being repaired.

After the repair is completed, it is required to properly assemble the starter.

The pulley is mounted on top of the spring. How to insert a spring into a chainsaw starter. In this case, it is necessary to check how much they grappled with each other. In continuation of the repair, it is necessary to wind the pulley. To replace the starter, it is enough to install its starter for a chainsaw with a new spring. Chainsaw repair partner 350 video how to insert a spring into a chainsaw starter repair. Chainsaw repair installation of a spring in a manual starter how to insert a spring into. This must be done in such a way that during rotation it pulls the cord into the starter. It is enough to make 3-4 turns to give the required voltage. Starter how to insert a spring into a chainsaw starter plm as a spring. Starter how to insert a spring into a chainsaw starter plm how to put a spring correctly. How. Previously, the rope is threaded through the hole in the cover of the chainsaw.

You may need to make a few more turns to align the cord fixing holes in the pulley and housing. A new rope is threaded into the technological hole and a loop or knot is made: this will allow it to slip out of the pulley. how to insert a spring into a chainsaw repair installing a spring into a manual starter. The rope is taken aside so that it does not interfere with further work. Next, you need to fix the pulley.

First you need to install the soft start spring in place. It can be used the old one if no damage is found in it. or a new one if replacement is needed. A starter clamp is installed on top of the spring, which is fixed with a special screw. It securely fixes the clamp for a long time, preventing it from skewing and swinging. Installing a spring in a manual starter how to insert a spring into a chainsaw starter plm how. After that, you need to make several turns of the rope and run it inward. The cover with the assembled starter is installed in place. It is secured with screws.

After the repair and assembly is completed, you can get to work. Do-it-yourself starter repair does not take much time and does not require complex skills, but it saves time and money if such work is done in a service center.

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Do-it-yourself starter repair for gasoline, gasoline, trimmer

Whatever high-quality gasoline tool you use, everything can happen to it during the construction process and at the most inopportune moment for this. Often problems arise due to a broken starter. It happens that you can drill holes in a gas station to install fence posts or cut grass with a grass trimmer, start starting the device and only have time to pull the starter handle a couple of times, as the rope breaks and the engine has already started, having wound the rest cord on the flywheel, tearing off the pulley. Take it to a new store. But these are, of course, extremes.

Today we will look at the most common case where the breakdown is not so serious, and we will show how to repair the starter with your own hands if the cord breaks without any devastating consequences or winds due to the fact that the spring inside just flew off. At least initially I would like to believe in it. But in order to find out if this is true or not, it will be necessary to disassemble the starter.

How to repair a gasoline starter with your own hands?

In the event of a broken starter cord, everything is clear: remove the old rope, take the appropriate length and thickness (can be linen), pass through the hole in the spool, tie a knot. Next, we insert the spring to the required number of revolutions, only after that we fix the handle. and voila! More details on how this is all done are clearly shown below.

Installing or replacing the starter spring of a motorcycle, power drill, trimmer

But what if we have everything in perfect order with the rope, and the starter coil (pulley) does not go down? Let's take this problem step by step using the ADA GroundDrill gasoline engine starter which has a pulley with 2 metal antennas for 2 hooks.

In the case of other types of manual starts of a similar design, which are widely used in gasoline motorcycles, trimmers and power drills, the entire starter repair process will look similar, differing only in some nuances.

Starter repair: disassembly

Unscrew the screw with which the pulley is attached to starter cover. We take out the antennas, the spring. The pulley itself is carefully extended so that the spring does not bounce in the face. Even with the most careful dismantling, it usually immediately flies out of the coil and abruptly turns into a long metal strip or curls.

Carefully pull out the white starter coil. don't hurt the spring!

If the spring breaks or one of its hooks intercepts, then the starter cannot be easily and quickly repaired. spring needs to be replaced. In order not to spend money on buying a new starter, you can only look for it in the market.

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If the starter spring just fell off, i.e. one of the hooks is disconnected, it is enough to insert it, if necessary, slightly tighten the hooks more tightly (just don't break it!) Install the spring with the outer hook into the groove of the pulley and start turning it while holding his fingers inside the coil and not letting it pop out.

We fill the starter spring

By pressing the spring against the pulley in a circular motion, we bring the spring inward

First time insert starter spring may not seem so simple, but everything comes with experience. With a little practice, you can easily wind the spring in the pulley for up to a minute.

Brovchenko family. Installing the spring in the manual starter of the lawn mower.

How to install spring in manual starter for benzo- trimer? It is possible to do this at home. to me

How to wind the starter spring of a lawn mower. (Trimera)

so I wind starter springs benzotrimers, but springs saw starters and walk-behind tractors are wound on

Starter winding completed. It remains only to assemble the starter and raise the spring by the required amount

How do I assemble the starter?

The most important thing in the process of self-healing starter. properly assemble it.

After the spring is fully wound, you must carefully turn the coil and insert it into the starter housing so that the second spring hook fell into a groove in the hull.

Install the pulley (black in this photo), inspect the hole in it so that the spring hook falls into the groove on the starter cover

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Then, if you have a spring under the screw, install it first, remembering to put washers on top and bottom of the springs.

Carefully insert the cup with antennas into the grooves of the coil and tighten the screw.

Make sure the washer located on the spring does not fall out. Why is it important? The fact is that the spring with its end scratches the plastic cup, as a result of which the latter wears out and begins to tighten tightly with the help of a screw on the coil. For this reason, a situation very similar to the loss of a spring can arise: the handle is pulled out of the starter, but the spin does not return. However, when the starter screw is loosened, this problem disappears. Troubleshooting such a starter failure is simple: simply raise the spring of the same diameter, but a little longer, or put an additional washer. If we just tighten the screw, it will spin and fly out, and this will increase the chance of spring failure, since the pulley will not fit snugly into the starter housing.

The coil has been screwed to the body, now we need to pull the spring. Before doing this, you must first remove the starter handle from the rope. If the knot is too strong, you can simply cut it off or try to untie it, for example using a pair of pliers. This is done so that after you have weighed the spring, you could pass the rope into the hole in the starter cover. The other end of the rope must be fixed in the spool before it is inserted into the body, in order to pull the spring onto the rope, it is not necessary to wind the rope around the pulley. you will do it after.

Before weighing the spring, estimate how many coil ropes need to be tightened. Assume that the length of the rope in the Ada GroundDrill-5 motor starter corresponds to 5.5 turns around the reel. In this case, rotate the spool at least 6 times in the opposite direction to the winding direction.

So let's get started. Do not unwind, insert the rope into the groove specially designed for it in the spool. Everything is ready, we begin to tighten the spring. To do this, turn the coil in the opposite direction when looking at the rope. Do it more comfortably not on your knee, but by pressing the starter with one hand on the floor, and with the other turn the coil right behind the rope in it. If experience is not enough, then you can rotate the pulley directly with both hands, but the rope will get in the way, which can create additional inconvenience. After the required number of turns has been made, we will pass the end of the rope through the hole in the starter cover, put on the handle, fix it with a knot. It is more convenient to do this together with a partner so that the end of the cable inside the starter does not accidentally end.

By the way, on your own, you can make some clarification in the design of the starter, so that it is more secure to fix the end of the spring inside the coil. At the moment, someone has enough for this. Now I will explain why this is necessary. It often happens that the spring in starters of this type, after already the first such independent repair and installation of the starter on the unit, after several jerks, flies again. the hook is not held in the groove of the reel. And this despite the fact that the coil is almost firmly pressed against the starter cover, and the spring there should not be free to dangle up and down, and even more so until the spring is released from the clutch. It turns out that when the rope is twitched, the spring is pulled out, pulled out of the groove. You can do the following: cut a narrow strip of metal, which in thickness can be compressed into the groove of the coil along with the spring hook itself. Thus, the hook will not loosen freely in the groove, and hence it will not be easy to avoid.

A metal plate tightly inserted into the gap between the spring hook and the groove walls holds the spring securely.

Another way to solve the problem. drill small holes in the coil on both sides of the groove and, inserting a spring hook, fix it with a thin wire passing through these holes. But here it is necessary to make sure that this wire does not touch when the starter cover is turned from the inside and does not slow down the pulley. As an option. slightly tighten the screw or replace it with a slightly shorter length. You may want to consider adding a gasket between the cap and coil.

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Almost all modern starters welcome the installation of a spring to start the generator in case of battery failure. Over time, the device may fail, and then you need to know how to fix the starter spring on the generator on your own.

Why do you need a manual starter

ATTENTION! Found a completely simple way to reduce fuel consumption! Don't believe? An auto mechanic with 15 years of experience also did not believe until he tried it. And now he saves 35,000 rubles a year on gasoline!

An electric starter is provided as the main starter. However, do not forget that if the battery fails, it will not work to start the equipment using an electric starter. In this case, a manual option was provided as a fallback.

A striking example of the use of a manual starter is portable power plants. It is easier to use a manual starter on them, because it makes it possible to conveniently start the engine and operate the generator.

Spring Recoil Starter Malfunction

The dense hook starter spring is the main design element of the manual starter. In addition to the spring, the starter also includes the following components:

• Ratchet;
• Cord with coil;
• Screw for fixing;
• return spring;
• Plastic fuselage ratchet.

Repair of the spring, the main component of the manual starter, comes down to replacing the element.

Here's how the replacement is done:

• The pulley screw is unscrewed with a screwdriver;
• Then the spring itself is removed.

On chainsaws, for example, it is an element in the form of a circle, inside of which a flexible spring is wound.

Springs in this form are sold in the hardware store. It remains only to buy a part and replace it.

Repair of a manual starter may also involve replacing the cord. If it is incorrectly wound on the spring pulley, then the generator will not start.

Here are a few rules for winding the cord:

• Wind the cord from the end of the pulley (done to avoid scrolling);
• The second end of the cord is passed into the hole in the lid;
• The winding of the cord should continue until it stops, i.e., as far as the length of the rope is enough;
• After winding, the cord is pulled out by 15-20 cm to check the rotation of the spring pulley;
• After winding, you should also check how the spring works after being pulled out and released (if everything works well, it is recommended to wind the cord one more turn).

At portable power plants, repair of the spring and cord is carried out as follows:

• On the side of the generator is a pulley circle, fixed with three screws that must be unscrewed;
• Remove the pulley with the spring and the cord;
• Check the condition of the cord, which can be completely removed from the side of the holder (the upper cap of the holder is removable).

Note. Often the knot of the cord that secures it from above weakens. To remedy the situation, you need to heat the end of the nylon rope with a lighter, and then wind a new knot.

As for the pulley with a spring, it changes in the same way as described above.

Operating rules

According to experts, a high probability of spoiling the spring appears when used improperly. To be able to competently work with a manual starter is worth a lot.

1	First you need to take the cord, carefully pass it through a small hole on the coil and tie a knot. But make sure the knot is strong enough that it doesn't come undone when you start the generator, because you'll have to start all over again.
2	Further, the manual starter spring must be installed in the housing, having previously hooked it in the groove. To make it easier to install, turn the part counterclockwise.
3	The next step is to install this spring in the groove of the coil, only after that you should put the drive ratchet on it.
4	For the drive ratchet, it is necessary to hook the hook of the return spring and fix it on the manual starter coil.
5	After that, put the spring, the body of the ratchet itself and do not forget to fasten everything with a locking screw.
6	When the whole mechanism is complicated, it remains only to stretch the free end of the cord through the holes in the back cover, and then in the starter handle. When you pass the rope, be sure to tie a strong knot. Then slightly pull the handle towards you to make sure that the mechanism and the ratchet itself are working or not.

In the design of the chainsaw, the starter is responsible for the correct start of the tool's engine. Over time, chainsaw owners are faced with the need to repair this important unit. And, the sooner it is possible to eliminate the malfunction, the less other important parts and mechanisms of the tool will give in to wear.

The device and principle of operation of the chainsaw starter

Most well-known manufacturers of chainsaws equip their products with starters that work on almost the same principle. Its essence is as follows: in the groove of the saw body there is a handle through which a cord is passed. When the handle is raised sharply, the cord is also pulled out, which engages the drum, which is in the ratchet mechanism. Through this, a drum with spokes is driven, which is located on the shaft. During this, the crankshaft makes a couple of revolutions, which leads to compression of the fuel mixture, which at this moment is located between the cylinder head and the piston. When lowering the handle, on the contrary, the ratchet and pins lose their contact, which causes the shaft to stop.

With an increase in the power of the chainsaw, the amount of fuel mixture increases, which should ignite when the chainsaw is started. In this case, to start the engine, it is necessary to increase the number of jerks of the starter cord. To speed up the return of the drum mechanism, manufacturers use a special steel starter return spring, which has excellent elasticity. To make it easier to start a chainsaw, leading brands use other methods:

• Pre-enrichment of the fuel mixture using a separate damper;
• Installation of an automatic decompression valve, which provides a decrease in pressure inside the chainsaw cylinder;
• Installation of a primer designed to pump fuel before starting the engine.

The use of one of these technologies greatly facilitates starting and prolongs the life of the starter, which is especially noticeable at low temperatures.

Typical breakdowns and repair of a chainsaw starter

The appearance of various starter malfunctions leads to the inability to start a chainsaw. The most common starter failures include:

• The starter pulley has completely burst, or cracks have appeared on it;
• Spring burst;
• The starter cable broke.

To fix each of these malfunctions with your own hands, you will need certain tools. You must have a set of screwdrivers and a spare cable with you. Remove and inspect the chainsaw starter in the following order:

1. To find the cause of the breakdown, the starter from the chainsaw will need to be removed. To do this, unscrew the screws with a screwdriver that hold the protective cover with the starter attached to it;
2. After removing the cover, carefully unscrew the screw by which the starter is attached to the protective cover;
3. Then you need to try to smoothly start the starter - to do this, remove the spring and clamps from it;
4. Next, a coil with a cable is removed from the starter for inspection.

As a result of the inspection, you can find a number of typical faults. These include:

• Various damage to the pulley in the form of breaks or cracks, mainly in the rear part of the part - they interfere with the normal operation of the entire starter;
• Damage to the starter spring for easy start - in such cases, not only the spring itself, but also the place of its fixation can be faulty - this is the most vulnerable part of the spring;
• Damaged starter flywheel.

In any case, any defective part must be completely replaced with a new spare part.

How to replace the chainsaw starter spring?

In order to replace the old spring in a disassembled starter, proceed in the following order:

1. Before installing the chainsaw starter spring, you will need to remove the clip of the mechanism - this should be done very carefully so as not to break the part;
2. Then you need to look inside the clip - in it you will see a spring wrapped around a C-shaped element. To pull out the spring, fix its upper part with your finger and pull the starter handle slightly to the side;
3. After removing the old spring, it is necessary to wind a new part. At the same time, try to avoid kinks and twisting of the new spring element;
4. To assemble the chainsaw starter spring, you will need to act as carefully as possible, otherwise one wrong move can lead to unwinding of the part;
5. After you managed to fully insert the spring into the starter, you need to carefully fix the cage.

At the last stage, it remains only to assemble the chainsaw starter and try to start the tool. It is possible that you will have to make 10 to 20 jerks - this is necessary in order for the spring to finally fall into place.

Gas trimmer starter repair may be required at the most inopportune moment. In this case, there are two ways to solve the problem: replace the broken part or change the entire assembly. The latter option will cost more. To repair the device with your own hands, in most cases you will only need a screwdriver with the appropriate tip from the tools. Repair work does not take much time and does not require special knowledge. It is enough to know the device, the principle of operation, the nuances of assembling and disassembling the starter on the trimmer in order to achieve the desired positive result.

Gas engine- this, in principle, is the main part of the lawn mower. Its power lies in the range of 0.5-2.5 hp. The movement from it is transmitted to a shaft located inside a hollow rod, and then through a gearbox consisting of gears, already a fishing line or a knife (working body).

Also, the lawn mower has the following elements:

• protective casing;
• lever;
• a belt designed for ease of use of the device;
• a starter used to start a gasoline internal combustion engine.

All details of motokosa are presented in the photo below.

The starter on the trimmer is an integral part that starts the engine to work. It is shown separately in the two photos below.

Starter mechanisms of various models of lawn mowers work on the same principle: during the start of the internal combustion engine, the protrusions marked in the photo above with the number 1 engage with the pawls 3. When the engine starts, they return to their previous position due to the effect of centrifugal force. Wires 2 also play a similar role.

The process of returning to the initial position of the elements of the mechanism occurs due to the presence of a spring wound around the axis. It unfolds when the rope is pulled. After the cord is released, it retracts and winds up due to the coiling of the spring. During the start-up of the internal combustion engine of the lawn mower, the triggering mechanism rotates its shaft until it starts to work (starts up).

To date, gasoline lawn mowers are equipped with starter mechanisms of two types:

• manual;
• electric.

The first option is much more common.

The starter on the trimmer can function without breakdowns for a long time. It is impossible to unambiguously specify the period of failure-free operation. Everything is determined by the initial quality of the device and compliance with the rules for handling it.

The main malfunctions of the trimmer starter

It is not difficult to determine the cause of the breakdown of the triggering device. There are several main options:

• broken cord (rope);
• when the spring breaks or disengages.

These details are shown in the photo below.

It may happen that the starter mechanism is accidentally broken. The consequences will be disastrous if a broken rope is wound around the flywheel of a working internal combustion engine: then the spring will burst, the pulley will break. But such cases when a complete replacement of the starter assembly is required are extremely rare. In most cases, to fix the mechanism, it is enough to install a new spring or replace the cord.

Removal and disassembly of the starter, replacement of broken parts

To repair the trimmer starter, you will need to first disassemble it and then assemble it. This process is not particularly difficult. Required for work screwdriver with the correct tip.

Everything should be done carefully, observing safety precautions, mainly so that the spring does not injure the master in case of accidental flight.

Starter assembly disassembly

The launch mechanism is disassembled in order to install new parts instead of broken ones in the following sequence:

• unscrew the screw fixing the pulley with the starter cover with a screwdriver;
• take out the spring and antennae;
• carefully remove the pulley (you need to turn your head away or work, wearing glasses and gloves beforehand);
• determine why the trigger mechanism has broken;
• if the spring has collapsed almost completely, then it is replaced;
• when the spring leaves the hook, it is installed in its original place, having bent the antennae before it (the photos show the laying process);

• after the spring plate is installed inside the groove, it is carefully twisted.

To change the spring, you should work carefully and carefully: it can accidentally burst under the influence of the force caused by installing it in place. Even if you carefully remove the roller, the springy strip flies off the reel very quickly and can injure your hand with its sharp edges.

It is not always possible to immediately put the spring plate in its original place. It often slips, so attempts must be repeated until the desired result is achieved.

Starter Assembly

The assembly of the starter assembly is carried out in a number of stages:

• the coil is turned over, setting it so that the spring bend fits exactly into the groove of the housing, as in the photo below;

• two washers are laid, between which a spring is placed;
• put in place a cup with a mustache;
• tighten the screw (photos below).

When performing the above manipulations, it is necessary to put two washers. If this is not done, then the spring will eventually damage the plastic cup, and when it is tightened, wedging will begin. Because of this, there is a feeling as if the spring has flown off. To eliminate this drawback, you need to install this part of a longer length or an additional washer.

When such spare parts are not available, you can just a little unscrew the screw, and the starter assembly will start working without wedging. But this option is temporary - it is better to repair it qualitatively as quickly as possible.

Spring tension

After installing the spring, it should be tensioned. To do this, perform the following steps:

• remove the handle from the starter cord;
• then the rope is inserted into the reel groove;
• the spring is tensioned by rotating the coil in the opposite direction to the clockwise direction (winding);
• make the required number of revolutions specified in the instruction manual for the trimmer model used and corresponding to the length of the cord used;
• at the very end, the rope is threaded into the hole intended for this, located in the starter cover;
• put the handle in place, fixing it with a knot.

If after repair the spring continues to fall, then you can get rid of it in the following ways:

• squeeze a suitable piece of the record into the groove at the location of the spring hook;
• drill holes on both sides of the groove in the coil, into which insert the spring hook and fix it with a wire.

Replacing a Broken Cord

The torn rope is replaced in the following sequence:

• remove the old cord;
• choose a rope that is suitable in size (thickness and length);
• passing it through a special hole in the coil, tie a knot;
• cock the spring, producing the required number of revolutions;
• fix the handle.

It is better to tighten the spring plate together with a partner so that the edge of the cord does not wind up inside the starter mechanism.

Assembling the starter on the trimmer and winding the spring is not difficult, but you should do it carefully and with care. For different models of lawn mowers, the failures of trigger mechanisms are the same, so they are repaired in the same way. However, there are some nuances associated with their design features.