Chainsaw is an indispensable tool not only for a dacket, but also during construction work. If need to be stocking for winter, it does not make sense to go to the forest without chainsaws. With the correct operation of the tool, it can serve for a long time, but in any case, sooner or later, various types of faults will occur. One of these faults is a starter breakdown, as a result of which the start of the engine is hampered. In this situation, it is advisable to repair the starter of the benzopil with your own hands. How to do it, learn in the material.
All types of chainsaws, both Chinese and European production, are equipped with the starters of the identical design and the principle of operation. The universal design of starters allows you to apply the device data both on branded chainsaws and on semi-official tools supplied from the subnet. It is important to note that the tools of domestic production are possessing some distinctive features.
Starter for chainsaws is a simple mechanism consisting of:
- Drum.
- Cable.
- Handles connecting with a cable.
- Frame with a return spring.
The principle of operation of such a device is also fairly simple. When pulling the handle, which is connected by the cable with the drum of the ratchet mechanism, its movement occurs. The drum when moving in engagement with the slots of another drum, which is located on the shaft. Thus, manually moves the crankshaft of the saw, which makes several revolutions. As soon as the handle returns to its original position, which contributes to the return spring, the slotted connection is lost, which leads to a stop of the shaft. With each movement of the crankshaft in the cylinder, the amount of fuel and air mixture increases, which ultimately contributes to its ignition.
The more tool power, the more jerks should be made by the starter to start the motor. For accelerating the return of the drum to its original position, the return spring corresponds to the manufacture of which is carried out using steel with a high degree of elasticity.
Over time, with permanent operation of the tool, there are problems with starting the engine, or rather, with the functioning of the starter. If such problems arise, the starter can always be repaired. If the principle is known and the starter device is known, then it is not much difficult to carry out its repair.
Typical breakdowns and starter repair chainsaws
Before repaired, it is necessary to find out the causes of the breakage. Since the product is constantly subjected to dynamic and other types of loads, it does not exclude its failure. Frequent causes of the starter breakdown become: the ripping of the cable, abrasion, or painting several slotted drums, damage to the spring, the crack of the pulley and others. To determine why the saw does not start, you will need to conduct an appropriate audit of the starter mechanism. Consider the basic types of faults, as well as find out how to repair the product.
Replacing the cord
The starter cord is a solid rope that is strong enough to wear, but even its technical properties do not save it from damage. Rope each time the tool is launched, it turns about the housing of the starter cover, which leads to its gradual eradication and wear.
If the cord has happened, then it will take to disassemble the housing of this node to replace it. After removing the lid, it is necessary to raise the drum, but only in such a way that it does not jump out of its seats. It is recommended to carry out such work with a partner, which will fix the spring, and you will be replaced by the cable. The remains of the old cable should be removed, then fasten the new product in the handle and in the druminel. After that, the cable should be wounded on the roller, and at the end to collect the case.
It's important to know! Before fixing the cable in the handle, you should skip it through the appropriate hole in the starter lid.
How to replace the starter spring chainsaw
If there is a spring damage, which often happens on Chinese instruments, then the mechanism can be repaired only by replacing it. But if its damage occurred at the point of joining, that is, the eye burst, then it can be repaired.
The springs repair is heating the destroyer to 600 degrees, after which it is slowly cooling up to 100 degrees, at which to finish the end of the debris. Thus, it will be possible to avoid the loss of elasticity of the product, which will extend the life of its service. Although most specialists simply perform the replacement of the product to a new one.
The process of replacing the spring is carried out in the following sequence:
- It is originally removed by the clip or the drum of the mechanism.
- Inside the drum is a spring. To dismantle it, it will be necessary to fix it with the top, and then delay the starter handle.
- When the old spring is extracted, you need to install a new one. At the same time, it is necessary to clean the housing.
- When installing a new spring, it should be inserted into the starter, after which getting a mustache in the groove.
- At the end of the work, you can wear a drum and install the starter cover in place.
A detailed spring replacement process is considered on video:
Replacing dogs flywheel
If you need to replace the dogs or the flywheel response, then it is also not difficult to do it. To do this, you will need to dismantle the flywheel, then remove the dogs. Installing new dogs should be exclusively those that were initially (plastic or metal). This is very important, since the replacement of plastic dogs to metal will lead to the accelerated wear of the flywheel. Details of the replacement of the starter dogs, the chainsaws are considered in the video below.
In conclusion, it is important to note that for the repair of the starter, the chainsaws do not need to have special skills or experience. All work can be performed independently, if you take the repair process with full responsibility. Timely conduct of preventive work of chainsaws will avoid breakdowns when performing work in the field.
One of the most important nodes of any chainsaw is the starter. It is from its work that the motor start speed and the subsequent operation of the unit depends.
A standard starter for chainsaws is a mechanism from a coil with a handle (wound on the pulley of the cord) and the frame with a return spring. The node is activated by pulling the rope (the operator pulls the starter cord). When pulling the knob, the dog is clinging for the drum ratchet, the flywheel is spinning, driving a crankshaft and launching a motor.
When the operator releases a handle, the return spring returns the starter to its original position.
Typical node faults
Passing the rules of operation and accurately using chainsaws can serve the owner for many years. However, small malfunctions and malfunctions still arise. Among the most frequent breakdowns of the problem in the ignition system and starter malfunctions.
The main causes of problems in the work of the node are:
- broken or bursting pulley;
- breaking the trigger;
- bowling the spring of the starter.
Moreover, eliminate such breakdowns and set the starter spring chainsaw tool owner can independently. Observing a certain sequence of actions.
Repair starter chain saw with your own hands
A frequent question that arises from owners of benzoinstruments, "How to collect a starter chainsaws and eliminate its faults?". The procedure is not as complicated as it may seem. It is enough to prepare all the necessary tools and follow the instructions.
First of all, it should be removed the node from the chainsaw housing. For this, the bolts are unscrewed, and the side cover is removed from the tool. When the lid is removed and examined, you can proceed to dismantling the starter. For a full inspection and repair of the mechanism, it is necessary:
- unscrew the screw fixing the starter;
- dismantle the clamp, spring startup spring;
- release the pulley with the cord, in the case of a complete or partial cliff to wind a new rope;
- inspect the pulley on the presence of cracks, damage at the rear, wear;
- detection of damage to the smooth start spring (mechanical malfunctions, fastening defects, damage to the springs tip);
- replace all damaged parts;
- perform a winding pulley;
- collect starter and install on a saw.
It should be remembered that inserting the spring into the starter is needed before mounting the pulley. It is also important to check the quality of their coupling.
Consumers who do not know how to assemble the benzropil starter spring, or are afraid to do it on their own, can contact the service center.
Quick start any chainsaws without starter. In the process of operation of the tool, due to the accelerated scrolling of the crankshaft, the fuel-air mixture is supplied to the engine, compressing and flammifies. Based on this, a qualitatively selected starter for chainsaws is able to guarantee a long and working operation of the entire mechanism!
Device and principle of operation
Almost all well-known manufacturers of chainsaw complement their own products with starters of an identical principle of operation. After all, it is not for nothing in any specialized store today you can find universal types of starters, which are equally perfect for any model of chainsaws, whether Makita, Huskvarna or a calm, or even semi-official fake from China under the above brands. Nevertheless, among the starters of domestic production there are those that have their own unique features - the Urals, Forester, etc.
The starter work lies in the following: on the chainsaw housing there is a handle, through which a special cable passes, pulling and engaging the drum of the ratchet mechanism with a sharp stretching. At the same time, the movement is transmitted to the drum with slots on the shaft.
At this time, the crankshaft makes several complete revolutions, as a result of which the working mixture is compressed between the cylinder head and the piston. If the handle is released, then contact between the slots and ratchet will be lost, with the result that the shaft will just stop!
The greater the volume of the engine chainsaws, the more fuel mixture will be needed for further ignition. Based on this, to start a high power saw, as a rule, you need more jerks for a starting cable. For more jobs and to speed up the reverse drum manufacturers began to use painful return springs From elastic steels.
Simplification of the launch of chainsaws is achieved at the expense of the following factors:
- The presence in the design of some models chainsaw (for example, in the Maxcut, Partner models of the line S, etc.) of a special pump that guarantees a timely swap of the fuel mixture.
- Installation of an additional spring, providing easier spinning of the crankshaft when the cable shift.
- Due to the pre-enrichment of the mixture through the appropriate damper in the carburetor housing.
- Accommodation automatic decompression valvewhich will reduce the operating pressure inside the cylinder.
Repair starter chainsaws
In the process of frequent operation, some components of chainsaws may be subjected to constant dynamic effects, because of which, for example, a cable can burst into the most inappropriate moment, the shaft will start turning from a slower speed or the ratchet teeth are cut. Given this, the repair and audit of the starter chainsaws can act with operations carried out even more than once in the course of one work season!
Spring repair
With low quality of the spring, the latter has the burst property, and usually the gap takes place on the contact area with the drum, in the place where the loop is formed. In this case, it is not necessary to change the spring at all! It is quite enough just to clean the surface from the existing lubrication and dirt, after which it is careful to undermine the destruction site. At the end of the spring is released at a temperature of 600-650 degrees, until the steel will receive a raspberry shade. It should cool the item gradually, where at 100-150 degrees it is already possible to carefully wrap the end of the spring on the inner surface of the drum on the form of the restrictive protrusion so that the material gets the desired ductility. At the same time, the elastic characteristics of the spring will remain the same.
Replacing the cord
In case of pulling the cord, the cable begins to rub about the starter housing. The replacement of the cord begins with the parsing of the housing of the node, during which the ratchet drum is gently rises so that the return spring does not slip from its nest. More correctly and more convenient to do it togetherWhere during the replacement of the second cable will keep the spring! After the cable is successfully fixed in the grooves of the drum and the handle, it is wound on the roller with the subsequent assembly of the case.
How to put a spring for the starter chainsaw?
Even an experienced master is difficult to place a starter spring in the required groove. The first thing the spring is folded to its initial diameter, after which it is placed inside the cavity of the hub of the drum. The external end of the spring is located opposite the hole in the castle - for this purpose you can use the hole! The outer end is located for a limited protrusion. Using the same screwdriver of the loop from the inner end of the spring combined with the hole. The disk falls, after which its rotation is checked, as well as that whether the dog of the snoring mechanism is correct. The assembly of ratchet is carried out.
After successfully replacing the springs, you need to adjust its tension. To this end, the cable is entered on the circle in the groove, where the return spring is twisted on it. By removing the slack. It will be more correct when the spring cheating will be made additionally a pair of revolutions, thus ensuring the necessary tension of the part.
Do not try to independently repair the snoring mechanism at home, as for most moments requires a CNC machine! If you do not have it, then buying or ordering a new node in a specialized store will be more justified.
For quick launch, any chainsaws required starter. With the accelerated scrolling of the crankshaft tool, the fuel-air mixture is compressed into the engine and subsequent ignition. Therefore, the normal operation of the starter for chainsaws determines the performance of the entire mechanism.
Device starter chainsaws
Almost all the leading manufacturers of chainsaws complete their products with starters similar principle. It is no coincidence that the universal designs of starters are offered in specialized stores, which are equally successfully suitable for chainsaws, Huskvarna, Makita, and for Chinese semi-official fakes under the named trademarks. Some features are only the starters of the chainsaw of domestic production (Forester, Urals and a number of others).
The principle of starter operation for chainsaw is as follows. A knob through which the cable is missing is installed in the housing. If the knob is raised to raise, the cable is pulled out, and it introduces the drum of the ratchet mechanism that transmits the drum movement with the slots provided on the shaft. In this case, the crankshaft performs several revolutions, and the working mixture in the space between the piston and the cylinder head is compressed. Accordingly, when the knob is lowering, the contact between the ratchet and the slots is lost, and the shaft stops.
With an increase in the engine volume, the required amount of fuel and air mixture is growing, which is necessary for its subsequent ignition, so the number of jerks for a starting rope for a high-power saws increases. Therefore, in order to accelerate the refund of the drum, zaeval return springs are used made from steels with high elastic properties.
Facilitating the launch of chainsaws is implemented in the following ways:
- Pre-enrichment of the working mixture, for which there is a special damper in the design of the carburetor.
- Installation of an automatic decompression valve that reduces the operating pressure in the cylinder chainsaws.
- Installing an additional spring, which in the process of moving the cable makes it easier to spin the crankshaft.
- The presence in the design of some chainsaws (for example, the Partner S, Maxcut, etc.) of the primer - a pump that provides a preliminary fuel swap.
Repair starter chainsaws
With frequent starts, chainsaws some starter details are constantly subjected to dynamic loads. As a result, a cable can burst, several ratchet teeth cut out, and the shaft - will turn with significantly lower speed. Therefore, revision and even the repair of the starter - the operations carried out sometimes several times per season.
Replacing the cord
When it stretches, a constant friction of the cable about the starter body occurs. For replacement, disassemble the housing of the node, and carefully lift the ratchet drum in such a way as to not allow scraping from their return spring. It is better to do such a job together: the assistant fixes the spring, while the cable is replaced. After fixing the cable in the handle and in the grooves of the drum, the cable is wound on the roller, and the housing is going.
Spring repair
If the material of the starter spring turned out to be poorly disappointed, the spring was burst (usually in the place of its attachment to the drum, where it forms a loop). It is not worth replacing the spring in this case. It is quite thoroughly cleaning its surface from dirt and traces of lubrication, carefully subwind the place of destruction, then let go of the spring at 600 ... 650 ° C (the steel of the spring should purchase a raspberry color). Cooling the spring is necessary slowly, and at 100 ... 150ºС, it is already possible to carefully wrap its end in the form of a restrictive protrusion on the inner surface of the drum (steel will acquire the necessary plasticity) and insert into place. The elastic properties of the spring will not change.
How to put a spring for the starter chainsaw?
Place the starter spring in the desired groove - it's difficult even for an experienced user. Initially, the spring should be twisted until the same diameter and install the drum hub in the cavity. The outer end of the spring is fixed for the restrictive protrusion, and the outer blame should be positioned opposite the hole in the lock. The loop at the inner end of the springs is combined with a hole, after which the disk is lowered. The rotation of the disk is checked, whether the dog snore mechanism has become in place. Next is the assembly of the ratchet itself.
After installing the spring, it is necessary to adjust its tension. To do this, a rope is introduced into the chain on the circle, and the return spring is twisted around it. After eliminating the slack, it is better to wind the spring for additional multiple speeds to ensure the required items.
Repair of the most snoring mechanism at home is not recommended, since many operations will require the use of CNC machine. It's easier to acquire a new node in specialized stores.
Chainsaw has become so familiar tool in the foundation of any type, that in the event of a breakdown, you are experiencing a real discomfort. You can immediately attribute the tool to the service center, and part with a certain amount of money.
Or calmly understand the causes of malfunction - and make repair with your own hands.
The advantages of this approach:
- you save considerable funds, work free, spare parts you are looking for yourself, having the possibility of price maneuver;
- the chainsaw device is no longer a mystery to you, all the processes occurring inside are clear to you;
- your pride celebrates victory, friends look at you respectful;
- the situation where the chainsaw unexpectedly "stands up" in the forest glade 50 km from the nearest settlement, will not find you surprise.
What you need to know to repair chainsaws with your own hands, and what tools are required?
First of all, it is necessary to understand the kinematics of the device. Superficial knowledge type: "Petrol, motor, launch cord, shaft, chain" - not enough. Explore the technical description of your instrument, read the profile literature.
When conducting warranty service (during this period, the repair is better to entrust the service) Do not hesitate to ask questions to the masters, try to delve into the chainsaws. Moreover, it is better to do it preventively, without waiting for the first breakdown.
Important! If you know the principle of operation of the chainsaw - the probability of breakage is approaching zero. The owner who "sees" the tool throughout will not allow an abnormal situation leading to the failure of the mechanisms.
Working Tool Standard:
- Set of end and horn keys;
- Candle-wing key;
- High-quality screwdrivers;
- Passatia, tweezers, booths;
- Removal of stop rings;
- Soldering iron, tester.
The welding machine will not need, since the body breakdowns entail the replacement of the elements. Even the repair of tires chainsaws with mechanical damage is undesirable.
What malfunctions are most often found, and how to eliminate them?
Repair starter chainsaws
Frequently frequent trouble during operation - breakdown of the starter mechanism.
It may not grab the shaft, do not wind up the cord after the jerk, or to jam. With a stressed mode of operation, this is normal. The main thing is not to panic, just unscrew the side cover, and inspect the mechanism. When disassembling, be sure to clean all the elements from dirt and dust.
Inspect the starter clamp, the spangle for softening the jerks when starting, and fastening the starting cord. On the snoring mechanism (white gear on the illustration), the teeth for setting should be of the same size, without chipping and cracks.
Under the starter lid, the mechanism of starting chainsaw
When defects are detected - replace the node. It is easier to buy it ready, since the manufacture of such a part on the CNC milling machine will fly into a penny. The broken spring can be easily selected a replacement, this is not such a responsible node. The cord fastening is at all a trifular problem.
Then remove and check the condition of the pulley.
This element bears the greatest load, so it can break first. Unfortunately, it is also not subject to recovery, so in the event of a breakdown, buy a new one.
Sequentially disassemble the starter mechanism
Check the performance of the return spring. It can be chosen in diameter and effort.
Collect the mechanism in the reverse sequence, not forgetting to lubricate rubbing surfaces. Check out performance. With a high probability of the starter repair, the chainsaws will be completed successfully.