How to change the winding switch on a chainsaw. How to change the starter spring on a chainsaw

How to repair the starter chain saw with his own hands

The occurrence of various malfunctions of the starter motor leads to the inability to start the chainsaw. The most common breakdowns of the starter includes:

To fix each of these problems with your own hands you will need certain tools. Be sure to have a set of screwdrivers and a spare rope. Remove and inspect the chain saw starter in the following order:

• To find the cause of the failure the starter with a chainsaw will need to be removed. To do this, you need to unscrew the screws that hold the protective cover with the starter attached to it with a screwdriver;
• After removing the cover, it is necessary to carefully unscrew the screw by which the starter is attached to the protective cover;
• Then you need to try to smoothly run the starter. to do this, remove the spring and clamps from it;
• Next, from the starter for inspection removes the spool with a rope.

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

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

In either case, any faulty part must be completely replaced with a new part.

Typical faults

The most common breakdowns of the tool include the following:

• problems in the ignition system;
• stopping the chainsaw’s operation while making the cut;
• Loss of power during operation;
• Wear of some structural elements of the chainsaw (brake belt, drive sprockets, anti-vibration parts);
• problems in the fuel system;
• malfunctions associated with the starter.

In addition, it is necessary to make a visual inspection of the chainsaw before starting work and preventive measures. These include lubricating the chain, checking the amount of fuel mixture, and having the right amount of oil.

The spark plug is unscrewed to check its condition.

Each of the faults is eliminated according to its own technology. For example, to repair the fuel system of a chainsaw, the first place to look is the associated filter. After that, check the correct adjustment of the carburetor, which is carried out with the help of screws. Check that the clearance is set correctly in accordance with the chain saw manufacturer’s instructions.

Diagnosing the chain saw starter

The chain saw’s starter mechanism fails due to prolonged use. After one or more pulls on the starter rope the crankshaft will not turn. This problem may be caused by the following:

Before starting work on diagnosing and repairing the starting mechanism, it is necessary to prepare the necessary tools and accessories, which will significantly reduce the time of the operation. These include:

• A set of locksmith screwdrivers and a specialized set of brand-name tools included with the chainsaw.
• Sturdy cord to replace the worn starter rope.

In the first phase of the chainsaw starter repair it is necessary to identify the nature of the problem. To do this remove the side cover on the side of the starter mechanism, unscrewing only a few screws. Depending on the manufacturer, for this operation you will need a specialized or common screwdriver.

Then we examine the inside of the protective cover. If there are no cracks or chips in the plastic we proceed directly to the diagnostics of the starter unit. Unscrew the central starter bolt and remove the spring. There should be no cracks or tears on its surface. To pick up yourself similar to the force and the number of coils is problematic, so you need the help of specialized centers.

After removing the chain saw starter clamp and spring, the pulley with the wound cord is available for disassembly. The integrity of the rope indicates that each of the parts of the starter mechanism should be carefully inspected.

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Repairing the starter mechanism

When inspecting a disassembled starter, the following parts (assemblies) should be inspected for damage:

• Drive sheave. Pulley subjected to high axial and radial loads should not have cracks and damage on the back side. If present, it is required to be replaced with a new part.
• The starter spring. It is the spring that is subjected to most of the starting forces of a chainsaw. Made from quality carbon steel and subjected to special heat treatments, it loses its properties over time. If cracks or tears are found, a new spring will need to be installed.
• Starting rope. Made of synthetic wear-resistant materials, the starter cord will wear out over time. If it breaks, it is necessary to install a new rope on the pulley.

Replacement parts should be in accordance with the regulations of the particular chainsaw model.

After the made repair work it is necessary to assemble the starting mechanism in the reverse order. A pulley with a ratchet should be installed over the spring. Before the final fixation of the chain saw starter cover it is necessary to wrap a rope and make a few test jerks.

Remember that the starter cord has to be inserted through the hole in the cover beforehand.

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Typical chain saw starter failure and repair

Before you start a repair, find out what’s causing the problem. Since the product is constantly subjected to dynamic and other types of loads, its failure is not excluded. Frequent reasons of starter breaks are cable breakage, abrasion or scratching of some splines of the ratchet drum, spring damage, sheave cracking and others. To determine why the saw does not start, you will need to conduct a proper inspection of the starter mechanism. Let’s consider the main types of faults, as well as find out how to properly repair the product.

Changing the cord

The starter cord is a strong rope, which is sufficiently resistant to wear, but even its technical properties do not save it from damage. The rope rubs against the housing of the starter cover every time you start the tool, which causes it to gradually fray and wear out.

If the rope rubs against the cover, you will need to disassemble the cover to change it. After removing the cover, you must perform lifting of the drum, but only in such a way that it does not come off its seats. We recommend that you do this work with a partner who will fix the spring and you will replace the rope. The remains of the old rope should be removed, and then secure the new product in the handle and in the groove of the drum. After that, the cable should be wound on the roller, and finally assemble the body.

Important to know! Before fixing the cable in the crank, it is necessary to pass it through the hole in the starter cover.

How to change the chain saw starter spring

If there is damage to the spring, which is often the case with Chinese tools, then the mechanism can only be repaired by replacing it. But if its damage occurred in the place of connection, that is, the ear broke, then it can be repaired.

Repair of a spring is to heat the place of destruction to 600 degrees, then slowly cool it down to 100 degrees, at which time perform the wrapping of the end to the shape of the fragment. Thus, it will be possible to avoid the loss of elasticity of the product, which will prolong its service life. Although most specialists simply replace the product with a new one.

The process of replacing the spring is carried out in the following sequence:

• First remove the cage or drum of the mechanism.
• There is a spring inside the drum. To remove it, you will need to fix its upper part, and then pull aside the starter handle.
• When the old spring will be removed, it will be necessary to install a new one. In this case it is necessary to clean the housing.
• When installing a new spring, it should be inserted into the starter, and then hit the bar in the groove.
• At the end of the work you can put the drum on and put the starter cover back on.

A detailed description of how to replace the spring is at

Flywheel catches replacement

If it is necessary to replace the handwheel pawls or taps, it’s also easy to do. This will require removing the flywheel, and then remove the dogs. Install new pawls only those that were originally installed (plastic or metal). This is very important, because replacing the plastic dogs on the metal, will accelerate wear and tear handwheel. The details of chain saw starter pins replacement are discussed in the video below.

It’s important to note that you don’t need any special skills or experience to perform chainsaw starter repair. All the works can be done by oneself if one treats repair process with all the responsibility. Timely preventive maintenance of your chainsaw will help avoid breakdowns when working in the field.

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Design and principle of chain saw starter

All types of chainsaws, both Chinese-made and European-made, are equipped with starters of identical construction and operating principle. The universal design of the starters allows to use these devices on branded chainsaws, as well as on semi-official tools supplied from the Celestial Empire. It is important to note only that some distinctive features have tools of domestic production.

The chain saw starter is an uncomplicated mechanism consisting of:

The principle of operation of such a device is also quite simple. When pulling the handle, which is connected to the drum of the ratchet mechanism by means of a cable, the latter moves. The drum moves and engages with the splines of the other drum, which is located on the shaft. Thus, manually moves the saw’s crankshaft, which makes several revolutions. As soon as the crank is returned to its original position, which is assisted by a return spring, the spline connection is lost, which brings the shaft to a halt. With each movement of the crankshaft in the cylinder increases the amount of fuel-air mixture, which eventually contributes to its ignition.

The greater the power of the tool, the more jerks the starter must make to start the motor. The return spring is responsible for speeding up the reel’s return to its original position and is made with high resiliency steel.

Over time with constant use of the tool there are problems with starting the engine, or rather with the starter mechanism functioning. If such problems arise, the starter can always be repaired. If you know the principle and structure of the starter, then to carry out its repair with your own hands will not be very difficult at all.

Typical chain saw starter failure and repair

Before carrying out repairs, it is necessary to find out the causes of failure. Since the product is constantly subjected to dynamic and other kinds of loads, it is not excluded its failure. Frequent causes of failure of starters are: a broken cable, wear or scratch a few splines of the ratchet drum, damage to the spring, a cracked pulley and others. To determine why the saw does not start, you will need to carry out the appropriate revision of the starter mechanism. Let’s look at the main types of malfunctions, and find out how to properly repair the product.

Changing the cord

Starter cord is a strong rope, which is sufficiently resistant to wear, but even its technical properties do not save it from damage. The rope rubs against the cover of the starter with each start of the tool, which causes the cover to gradually wear and fray.

If the cord breaks, you will need to disassemble the housing in order to change it. After removing the cover it is necessary to lift the drum, but only in such a way that it does not slip out of its seats. We recommend that you do this job with a partner who will fix the spring while you change the cord. Remove the remains of the old rope and fasten the new product to the knob and groove of the drum. After that, the cable should be wound on a roller, and finally assemble the body.

Good to know! Before fixing the cable in the crank, it is necessary to pass it through the appropriate hole in the starter motor cover.

How to replace the chain saw starter spring

If the spring is damaged, which often happens with Chinese tools, it is possible to repair the mechanism only by its replacement. But if its damage occurred at the connection point, that is, the ear broke, then it can be repaired.

Repair of the spring is to heat the place of destruction to 600 degrees, then slowly cool it down to 100 degrees, at which time wrap the end to the shape of the fragment. Thus, it is possible to avoid the loss of elasticity of the product, which will prolong its service life. Although most specialists simply replace the product with a new one.

The process of replacing the spring is carried out in the following sequence:

• Initially the cage or drum of the mechanism is removed.
• Inside the drum there is a spring. To disassemble it, you will need to fix its upper part, and then pull aside the starter handle.
• When the old spring is removed, a new spring should be installed. At the same time it is necessary to carry out cleaning of the housing.
• When installing the new spring, insert it into the starter, then engage the tabs in the groove.
• At the end of the work you can put the drum and replace the starter cover.

The detailed process of replacing the spring is described at

Handwheel handwheel shift

If it is necessary to perform the replacement of the handwheel saddles or taps, then it is also not difficult to do it. To do this you will need to remove the handwheel, and then remove the dog. Fit new snappers only those that were originally made (plastic or metal). This is very important, since the replacement of plastic dogs for metal, will lead to accelerated wear on the flywheel. The details of chain saw starter cogs replacement are discussed in the video below.

It is important to note that you do not need special skills or experience to repair the chain saw starter. All work can be done by yourself if you treat the repair process with responsibility. Timely preventive maintenance of a chainsaw helps to avoid chain-saw breaks when working in the field.

How to repair chain saw starter with your own hands: how to put a spring, assemble, tension. Special Technique Info

The chain saw is designed with a starter motor to ensure that the tool starts properly. Over time, chainsaw owners are faced with the need to repair this important node. And, the sooner the malfunction can be eliminated, the less the other important parts and mechanisms of the tool will be subject to wear and tear.

The chainsaw is an indispensable tool not only for the dacha owner, but also during construction work. If you need to stockpile firewood for the winter, going to the woods without a chainsaw makes no sense at all.

If the tool is used properly, it can last a long time, but in any case, sooner or later various types of malfunctions will occur. One of these malfunctions is the breakage of the starter, as a result of which it is difficult to start the engine.

In this situation, it is advisable to perform the repair of the chain saw starter with their own hands. How to do this, we will learn in the material.

How to replace the chain saw starter spring

If the spring is damaged, which is often the case with Chinese tools, then the mechanism can only be repaired by replacing it. But if its damage occurred in the place of connection, that is, the ear broke, then it can be repaired.

Repair of the spring is a heating of the place of destruction to 600 degrees, then slowly cool it to 100 degrees, at which to perform winding of the end in the form of a breakage. Thus it will be possible to avoid the loss of elasticity of the product, which will prolong its life. Although most experts simply replace the product for a new one.

The process of replacing the spring is in the following sequence:

• First remove the cage or drum of the mechanism.
• The spring is located inside the drum. To disassemble it is necessary to fix the upper part, and then pull aside the starter handle.
• When the old spring is removed, it will be necessary to install a new one. At the same time it is necessary to clean the housing.
• When installing the new spring, it should be inserted into the starter, and then hit the tab in the slot.
• At the end of the work you can put the drum and install the starter cover in place.

A detailed description of how to replace the spring is at

Handwheel catches replacement

If you need to perform a replacement or flywheel tabs, then do it is also not difficult. To do this it is necessary to dismantle the flywheel, and then remove the dogs. Install new pawls should only be those that were originally (plastic or metal). This is very important, since replacing the plastic dogs with metal ones, will lead to accelerated wear of the flywheel. The details of replacing the chainsaw starter pins are discussed in the video below.

It is important to note that you do not need special skills or experience to repair a chainsaw starter. You can do the work yourself, if you treat the repair process with responsibility. Timely preventive maintenance on your chainsaw will help avoid breakdowns when working in the field.

Chain lubrication system repair

This is how the lubrication system is diagnosed:

Design and operation

Almost all the well-known chainsaw manufacturers supplement their products with starters of an identical working principle. It is not for nothing that in any specialized store today you can find universal types of starters, which are equally well suited for any model of chain saw, whether it is Makita, Husqvarna or STIHL, or even semi-official knockoffs from China under the above brands. Nevertheless, among the starters of domestic manufacture there are those that have their own unique features. Ural, Lesnik, etc.п.

The work of the starter is as follows: on the body of the chainsaw there is a handle, through which a special rope passes that pulls and engages the drum of the ratchet mechanism during a sharp pull. In this case, the motion is transmitted to the drum with splines on the shaft.

At this time, the crankshaft makes several full revolutions, causing the working mixture to be compressed between the cylinder head and the piston. If the handle is released, the contact between the splines and the ratchet is lost, and as a result the shaft simply stops!

The larger the chainsaw’s engine capacity, the more fuel-air mixture is needed for further ignition. On this basis, more jerks on the starter rope are usually necessary to start a high-powered saw. To make it more convenient and to speed up the return of the drum, manufacturers began to use the resilient steel spring return springs.

Making chainsaw starting easier is achieved by the following factors:

• Certain chainsaw models (e.g. Maxcut, Partner, S series, etc.) have a tensioning system that allows the.п.) A special pump that guarantees timely priming of the fuel mixture.
• Installation of an additional spring which makes it easier to unwind the crankshaft when the cable is displaced.
• By pre-enriching the mixture through the appropriate valve in the carburetor housing.
• Check the sheave to see if there is any sign of damage to the back of the housing or if there are any cracks.

How to Fix the Starter on a Chainsaw

Failure of the chainsaw’s starting system can be the cause:

• Drive pulley. This part is subjected to high axial and radial loads, so it is recommended to inspect the pulley for damage and cracks on the back of the housing before starting. If necessary, repair the part or replace it with a new one.
• Spring mechanism. If it has lost its properties or there are cracks or breaks in it, it is necessary to replace this element. It is also recommended to inspect the attachment points for defects.
• Rope starter system. Inspect the rope for wear and damage. If necessary, replace the part and install it on the pulley.

Diagnose

Diagnose the tool starting system as follows:

• The fixing screws are unscrewed and the cover is removed.
• Unscrew the screw that attaches the mechanism to the protective cover.
• Smoothly start the starter by removing the spring and clamps.
• Remove the spool and rope to check for wear and tear.
• Check the fuel system for water. If there is water inside the system, the fuel fluid must be replaced.
• Inspect the power unit for overfilling with fuel fluid. In this case it is necessary to unscrew and dry the spark plug, pull the starter, removing the air damper.
• Check the spark plug for spark.

See ” How to Make a Snowmobile and Other Home-Built Apps from the Druzhba Chainsaw

Changing the cord

In order to make a cord replacement, the following tools will be required:

Replace the starter cord as follows:

• You need to unscrew the fastening screws that hold the side cover, using a screwdriver.
• Then remove the starter from the tool body.
• After that, you need to turn the lid and inspect it.
• Then remove the clamp and spring.
• Untie the knot in the rope.
• It is necessary to pull out the pulley, on which the cord is wound. Remove the cord and replace it with a new one.
• Then put the pulley in place and tie the rope into a knot. Install the clamp and spring.
• After that, tighten the cover with the fixing screws.
• Finally install the starter in place and tighten the mounting screws.

Spring Repair

Procedure for repairing the starter spring:

• Remove the starter from the tool body.
• Remove the protective cover.
• Wind the cord around the end of the pulley to prevent the mechanism from turning.
• Insert the other end of the cord through the opening of the protective cover.
• Pull the cord out to about 17-20 cm to check the pulley rotation of the spring mechanism.
• Check the spring operation after pulling and releasing the mechanism.
• Unscrew the pulley circle from the side of the alternator by removing the 3 mounting bolts.
• Remove the pulley and cord.
• Check the condition of the parts for wear and tear and check for damage and breaks. If the spring break is small, the defect can be repaired by welding.

How to install the spring

In order to install a new spring, the following steps must be followed: