How to put the right spring on the starter chain saw

right, spring, starter, chain

How to put the starter on the Husqvarna

A chainsaw is a basic tool that can be used to get firewood for a bath or fireplace, and it can also be used for construction work on a summer cottage or a private home. If all criteria of operation are followed and preventive measures taken as provided by the manufacturer, chain saw can serve for a long time. But after a while there can appear small problems which can be solved without help from others. For example, the repair of the chain saw starter with their own hands is completely on the power of observing the sequence of operations.

Construction of a chainsaw starter: 1. starter screw, 2. bushing, 3. easy starter spring, 4. screw, 5, 6. coil starter, 7. deflector, 8. starter cover, 9. handle and cord, 10. screw.

Typical malfunctions

To the more common tool breakdowns can include the following:

  • Problems in the ignition system;
  • stoppage of the chainsaw during the sawing process;
  • Loss of power while working;
  • Wear on some structural parts of the chainsaw (brake band, drive sprocket, anti-vibration parts);
  • problems in the fuel system;
  • Malfunctions associated with the starter motor.

In addition, the chainsaw must be visually inspected before use, and precautions must be taken. How to rewind the starter spring trimmer for grass starter rope does not reload: how to determine the cause and to repair the starter with their own hands? How to disassemble the starter, plug it in and do it yourself all over again. These include chain lubrication, controlling the amount of fuel mixture, also the presence of the required amount of oil.

Spark plugs are unscrewed to check their condition.

Any of defects are corrected by own technology. So, for example, the repair of the fuel system of a chainsaw should begin with the inspection of the appropriate filter. After that inspect the correctness of the carburetor adjustment, which is carried out with the help of screws. The clearances must be set in serious agreement with the manufacturer’s annotation, which should come with the chainsaw. The repair of the ignition system includes inspection of the plugs. If there is heavy soot, a change in the gap or other visible damage this element should be replaced.

Diagnosing the chain saw starter

Because of how long you’ve been using the chain saw, the starter mechanism has been wearing out. After one or more jerks when pulling the starter rope, the crankshaft does not turn. This problem can be caused by the following reasons:

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 proprietary tools included in the chainsaw package.
  • A sturdy cord to replace the worn starter rope.

The chain saw starter spring

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

Next, inspect the inside of the guard. If there are no cracks and chips in the plastic, proceed directly to the diagnostics of the startup unit. Unscrew the central bolt of the starter and remove the spring. On its surface should not be observed cracks and tears. To find yourself a similar force and number of turns of the spring is problematic, so you need the help of specialized centers.

After removing the clamp and the chainsaw starter spring, the pulley with the wound cord is accessible for disassembly. The integrity of the cord indicates that it is necessary to carefully review each of the parts of the starting mechanism.

How to repair a chainsaw starter with your own hands

Presented repair of chainsaw starter after a break in the starting cord. Without a starter cord, the chainsaw becomes completely inoperable, there is no other way to start the tool. Repair considered by the example of a chainsaw Partner P350S, tricky reliable starting this saw requires a minimum of 4-5 times to pull the starter cord to saw started, so probably the first fault was a cliff cord. The cord does not tear right away, first the protective stocking of the cord breaks and prevents the saw from starting. It’s better not to wait for all the threads to break and fix the cord beforehand. It is not necessary to invent anything, the repair should not cause difficulties, but the exact observance of the conditions of assembly is mandatory. A step-by-step instruction with a diagram of actions with photos and video is given below.

Unscrew the three screws that secure the starter cover. The spark plug wrench and straight screwdriver that comes with it will do the job, but it’s better to use a normal tool for quicker work.

Let’s take the starter motor off. The chain saw is equipped with a soft starter and it is located above the spool with the cord.

Unscrewing the screw fixing the soft starter mechanism and the starter coil. Take care not to lose the washer!

The chainsaw is an indispensable tool not only for the outdoorsman, but also for construction work. If you need to stockpile firewood for the winter, then going to the woods without a chainsaw makes no sense at all. With proper use of the tool, it can last a long time, but in any case, sooner or later there will be different types of failures. One of these malfunctions is a breakdown of the starter, resulting in difficulty starting the engine. In this situation it is advisable to repair the chain saw starter with your own hands. Find out how to do it in the material.

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Diagnosing the chainsaw starter

Because of the chainsaw’s long-term use, the starter mechanism is in disrepair. After one or more jerks when pulling the starter rope does not turn the crankshaft. This problem may be due to the following causes:

Before starting work on diagnosing and repairing the starter 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.
  • Rugged cord to replace a frayed starter rope.

At the first stage of 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 you will need a specialized or common screwdriver for this operation.

Then we examine the inside of the protective casing. If there are no cracks and chips of plastic, proceed directly to the diagnostics of the starter unit. We unscrew the central bolt of the starter and remove the spring. There should not be any cracks and tears on its surface. To choose independently a similar force and number of turns of the spring is problematic, so you will need the help of specialized centers.

After removing the clamp and the chain saw starter spring, the pulley with the wound cord is available for disassembly. The integrity of the cord indicates that it is necessary to carefully review each of the parts of the starter mechanism.

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How to repair your chainsaw starter with your own hands

Repair of chain saw starter Partner / Broken starter cord

Broken cord

Presented chainsaw starter repair after a broken starter cord. Without a starter cord, the chainsaw becomes completely inoperable, there is no other way to start the tool. Repair is based on the example of a Partner P350S chain saw, a tricky reliable starting this saw requires at least 4-5 times to pull the starter cord to make the saw work, so I guess the first problem was a broken cord. The cord does not tear right away, first the protective stocking of the cord breaks and prevents the start of the saw. Better not to wait for all the threads to break and fix the cord beforehand. It is not necessary to invent anything, the repair should not cause difficulties, but the exact observance of the conditions of assembly is obligatory. A step by step instruction with a schematic of actions with photos and video is given below.

Unscrew the three screws fixing the starter cover. The spark plug wrench with a straight screwdriver will do for this process, but it is better to use a normal tool to speed up the work.

Remove the starter. The chain saw is equipped with a soft starter and it is located above the spool with the cord.

Remove the screw fixing the starter soft starter and the starter coil. Be careful not to lose the washer!

Starter removed Unscrew the screw

Soft starter Soft starter coil Remove the coil

Prepare a cord of suitable diameter and a length of 1.2-1.3 meters. For the repair we used the kapron clothesline :).

Melt the ends of the rope in the fire so it won’t unravel.

Tie an intricate knot at one end. The knot is needed large in diameter, but when installed on a spool should not protrude.

Threading the cord into the spool hole. The cord is not wound!

Insert the coil in its place. There may be a mounting mistake made here. The spool has two slits, one of which should catch the spiral spring. Install the spool so it is snugly seated and the spline is in the groove. Checked by turning the coil clockwise to determine the occurrence of return force.

The knot on the cord Cord is fastened Spring protrusion

Install soft starter mechanism. The protrusion of the mechanism must fit into the recess of the coil.

Screw the fixing screw with the washer.

Tuck the other end of the rope into the exhaust port.

Installing the soft starter The screw is screwed on The cord is pulled out

Tuck the cord into the starter grip. Tie a big knot at the end of the rope. With a small knot is the chance of slipping a cord and the whole cord will be tangled in the starter and to get it out the starter will have to be removed again. Check that the assembly is secure. See photo.

Cord in trigger knot knot Handle on cord Twist helix

The most important point! Let the cord loop inside the starter and start turning the starter mechanism clockwise without winding the cord! A minimum of five revolutions must be made for this saw. Fix the coil by hand. Pulling the loop by the handle outward. Holding the cord and the mechanism allow the cord to be wound onto the spool. See video.

Reinstall the starter motor and fasten it with three screws. Repairs have been made.

Renewed starter motor

Repairing a broken or damaged cord using the step-by-step instructions will take 15 minutes, which is much faster and cheaper than going to a service center.

If the instruction helped you, tell us about it in the Комментарии и мнения владельцев.

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Reconditioning of starter mechanism

When inspecting a disassembled starter motor it is necessary to inspect the following parts (assemblies) for damage:

  • Drive pulley. Pulley subjected to high axial and radial loads must not have any cracks or damage on the backside. If there are any, you need to replace it with a new part.
  • Starter spring. It is the spring that experiences the greatest stress when starting the chainsaw. Made of high-quality carbon steel and specially heat-treated, it loses its properties over time. If cracked or torn, a new spring will need to be installed.
  • Starting rope. Made of synthetic wear-resistant materials, the starter rope wears out over time. If it breaks, it is necessary to install a new rope on the pulley.

Purchased spare parts must comply with the regulations of the particular chainsaw model.

After the repair work is done it is necessary to reassemble the starter mechanism in the reverse order. A pulley with a ratchet is mounted on top of the spring. Before finally securing the chain saw starter cover, it is necessary to wrap the rope around and make a few test jerks.

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Remember that the starter cord is first threaded through a hole in the cover.

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Typical chainsaw starter failure and repair

Before making repairs, it is necessary to find out the causes of failure. Since the product is constantly subjected to dynamic and other kinds of loads, its failure is not excluded. Frequent causes of starter rope breakage are: a broken cord, abrasion or a few splits of the ratchet drum, spring damage, cracked sheaves, etc. To determine why the saw won’t start, you’ll need to perform a proper inspection of the starter mechanism. Let’s consider the main types of malfunctions, as well as find out how to properly repair the product.

Replacing the rope

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 cord rubs against the body of the starter cover every time you start the tool, causing it to gradually fray and wear out.

If the cord has been frayed, then replacing it will require disassembly of the housing of this assembly. After removing the cover, it is necessary to raise the drum so that it does not slip out of its housings. It is recommended that this work be done with a partner, who will fix the spring, and you will take care of replacing the cable. The remains of the old cable should be removed, and then secure the new product in the handle and in the groove of the drum. After that you should wind the rope on the roller and finally assemble the body.

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

How to replace the chain saw starter spring

If the spring is damaged, which is often the case with Chinese instruments, the mechanism can only be repaired by replacing it. But if its damage occurred at the connection point, 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 to wrap 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 life. Although most experts simply perform the replacement of the product for a new one.

The process of replacing the spring is as follows:

  • First remove the cage or drum of the mechanism.
  • The spring is located inside the drum. To remove it, you will need to fix its top 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 carry out cleaning of the housing.
  • When installing the new spring, insert it into the starter, then engage the tab in the groove.
  • At the end of the work it is possible to put the drum on and put the starter cover back on.

The detailed process for replacing the spring is described at

Flywheel catches replacement

If the handwheel dogs or tines need to be replaced, this is also no problem. To do this, you will need to remove the flywheel, and then remove the dogs. New dogs should be installed only those that were originally (plastic or metal). This is very important, because replacing plastic dogs with metal ones, will lead to accelerated wear of the flywheel. The details of replacing chainsaw starter pins are discussed in the video below.

It is important to note that in order to repair chain saw starter you do not need to have special skills or experience. All work can be done by yourself if you treat the repair process with responsibility. Timely preventive maintenance of your chainsaw can help prevent breakdowns when working in the field.

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Tips from the Professionals

In order to accurately orient the holes in the body and the rope fixing channel, you may need to make 2-3 turns.

In order to avoid slipping of the cord from the pulley need to tie a knot larger in diameter than the hole in the body. If there is no wear (damage) of the spring, it is installed first when assembling the chainsaw starter. On top of it mounted pulley and starter clamp, which prevents distortion of the mechanism during rotation.

As it turns out, repairing the chain saw starter with your own hands does not require special skills and tools. However, you should use the starter mechanism with great care and make periodic preventive maintenance checks from time to time.

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Types of chainsaws

Depending on the type of use and, accordingly, the technical characteristics that different chainsaw models have, they are qualified as follows:

Household. designed for light-duty work and simple operations. Lightweight, compact, easy to maintain and operate. Duration of use of such a tool is up to 1,0 hour a day.

Semi-professional. used in various fields of construction, in different spheres of human activity. Are a versatile type of tool. Up to 10.0 hours of use per day.

Professional. used in industrial volumes of lumber production, continuous modes of use (up to 16.0 hours a day) in a year-round cycle of operation.

How to put the spring on the chain saw starter?

Placing the spring in the appropriate groove is quite a challenge. First of all, the part will need to be twisted, returning it to its original size. After that, it needs to be inserted into the cavity of the regular drum hub. To tuck the spring into the chain saw starter, you need to act in this order:

  • The outer end of the used spring must be fixed in the special limiting ledge. In this case, the second end with a screwdriver will need to set against the regular hole inside the lock;
  • Next, the loop located on the inner end of the standard spring must be aligned with the hole. For this purpose it is better to use a screwdriver. With the ends aligned, the disc will need to be lowered;
  • After the disk has been installed you must check that the ratchet catch of the chainsaw is in its original place. Then you can assemble the ratchet in reverse order.
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To wind the spring on the chainsaw starter, you need to consider all the existing holes and notches. After assembly the spring needs to be tensioned. Once the slack is eliminated, the spring needs to be re-tightened a few turns to maintain the tension of the installed part.

Construction and principle of the chainsaw starter

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

The chain saw starter is a simple mechanism, consisting of:

The principle of operation of such a device is also quite simple. When pulling the handle, which is connected through a cable to the drum of the ratchet mechanism, there is its movement. The drum in motion engages with the splines of the other drum, which is located on the shaft. Thus, manually moving the saw’s crankshaft, which makes several revolutions. As soon as the handle returns to the starting position, which is assisted by the return spring, the spline connection is lost, causing the shaft to stop. With each movement of the crankshaft, the amount of fuel-air mixture in the cylinder increases, which ultimately contributes to its ignition.

The starter for a chainsaw: the work and repair of the tool with their own hands

A starter is the key to getting any chain saw up and running quickly. During the operation of the tool, thanks to the accelerated cranking of the crankshaft, the fuel-air mixture is fed into the engine, compressed and ignited. On this basis, a well-matched chain saw starter can guarantee long and faultless operation of the entire mechanism!

How to fix the starter on a chainsaw

The cause of malfunction of the chainsaw starting system can be:

  • Drive Pulley. This part is exposed 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 work. If it is necessary to repair the part or replace it with a new one.
  • Spring mechanism. If it has lost its properties or there are cracks or breaks, it is necessary to replace this element. It is also recommended to inspect the mounting points for defects.
  • Rope the starter system. The rope should be inspected for wear and damage. If necessary, replace the part and install it on the pulley.

Diagnostics

Diagnosis of the starting system of the tool is carried out as follows:

  • Unscrew the mounting screws and remove the cover.
  • Unscrew the screw that attaches the mechanism to the protective cover.
  • Smoothly start the starter by removing the spring and clamps.
  • Remove the coil and cable for inspection for wear and tear.
  • Check the fuel system for water. If there is water inside the system, the fuel fluid needs to be replaced.
  • Inspect the power unit for overfilling with fuel fluid. In this case, you need to unscrew and dry the spark plug, pull the starter, removing the air damper.
  • Check the spark plug for spark.

The starters on most chainsaws have the same design. That is why some stores offer customers universal starters that are suitable for installation on STIHL, Husqvarna and Partner models. Nevertheless, some differences from most have starter motors of domestic chainsaws Ural or Lesnik.

As standard, a chainsaw starter consists of a number of parts.

On top of all the elements of the starter is installed a protective cover. The basic principle of most starting mechanisms is also practically identical. In a special groove in the chainsaw housing is a handle that holds the cable. When the handle is raised sharply, the latter is understood to be. At that moment, the ratchet is actuated, which through the drum transmits the force to another drum with splines, located on the engine shaft.

When pulling the regular cable, the chainsaw motor shaft begins to rotate, which leads to compression of the existing fuel mixture, located at this time between the cylinder head and the regular piston.

As the volume of the internal combustion engine cylinder increases, the amount of fuel-air mixture required for its future ignition also increases. Accordingly, the operator of a high-powered saw needs to make more jerks than the owner of a low-powered household tool. To increase the speed with which the drum returns to its original position, the manufacturers of powerful chainsaws use elastic return springs.

The main malfunctions of the grass trimmer starter

It is not difficult to find the cause of the starter failure. There are several basic options:

You can see this information in the photo below.

It can happen that the starter mechanism is accidentally broken. The consequences will be unfortunate if the broken rope is wound around the engine flywheel: the spring will burst, the pulley will tear off. But such cases, when it is necessary to completely replace the starter assembly, are extremely rare. In most cases, you can fix the mechanism by just putting in a new spring or changing the cord.

right, spring, starter, chain

Starting assembly

The starter assembly is assembled in several stages:

  • the coil is inverted by installing it in such a way that the spring bend fits exactly into the slot of the shroud, as in the photo below;
  • put two washers between which the spring is installed;
  • put the cup with the antennas in place;
  • tighten the screw (photo below).

When performing the above manipulations it is necessary to put in two washers

If this is not done, the spring will eventually damage the plastic cup, and when it is raised, it will begin to jam. This makes it feel as if the spring has flown. To correct this defect, you need to install this part of greater length or an additional washer.

When such spares are not available, you can lightly unscrew the screw

, and the starter assembly will start to work without jamming. But this option is only temporary. It’s best to get it repaired as soon as possible.