How to remove a chainsaw starter motor

How to repair the starter on a chainsaw

A chainsaw is a powerful tool, which not only needs to be operated correctly, but also to take care of it. This is the only way for any tool to work reliably. Often sawyers face the situation of failure of the starter, so there are difficulties with starting the motor. To start the engine, you will need to repair the chain saw starter. And it is possible to make repairs with your own hands, taking only time to read the instructions.

Although chainsaws have different names, they are structurally similar. The starting mechanisms of gasoline-powered machines, with the help of which the engine is started, also have a similarity. Mechanisms for starting the engine are suitable for different brands of chain saws STIHL, Husqvarna, Dolmar, Makita and others. Structurally, a chain saw starter consists of the following elements:

  • The drum with the rope wound around it
  • The cable that drives the crankshaft of the tool
  • Handle for easy use of the mechanism
  • A wireframe with a spring that winds the rope around the drum (returns to its starting position) when the gunsmith starts the engine

The principle of operation of this device is simple. When the operating lever is suddenly pulled up, the cable is pulled out. The rope engages the ratchet and transmits the movement to the slotted drum. It moves the crankshaft in several revolutions. At this point, the fuel-air mixture is compressed in the cylinder. As soon as the lever is reset, the ratchet-spline connection is released and the shaft stops turning.

The amount of fuel-air mixture in the cylinder increases with each subsequent pull of the cable. For the cable to return to its original position, return springs are used in the construction of the starter. They are made of resilient steel. It is this spring that is often the cause of the unit starter malfunction, which can be repaired.

Chainsaw starter motor design

Almost all leading chainsaw manufacturers equip their products with starters of similar working principle. It is no coincidence that specialized stores offer universal designs of starters, which are equally suitable for STIHL chain saws, Husqvarna, Makita, and for the Chinese semi-official imitations of these brands. Only chainsaw starters of domestic production (Lesnik, Ural and a number of others) have some features.

How chainsaw starters work is as follows. In the groove of the housing is installed handle, through which the cable is passed. If the handle rises sharply, the cable is pulled and engages the drum ratchet mechanism which transmits the motion to the drum with slots provided on the shaft. This causes the crankshaft to rotate several times and the mixture is compressed in the space between the piston and the cylinder head. Accordingly, when the handle is lowered the contact between the ratchet and the splines is lost and the shaft stops.

As the volume of the engine increases, so does the amount of fuel-air mixture needed for its subsequent ignition, so the number of jerks for the starter rope for high-powered saws increases. That’s why the reel return springs, made of highly resilient steels, are used to speed up the reel return.

Making it easier to start the chainsaw is realized in the following ways:

  • Pre-enrichment of the mixture, for which the carburetor design has a special flap.
  • By installing an automatic decompression valve that reduces the working pressure in the chainsaw cylinder.
  • An auxiliary spring is installed that eases the unwinding of the crankshaft while moving the cord.
  • Some chainsaws (e.g. Partner S-series, Maxcut, etc.) are equipped with a special pump.) The primer is a pump that makes the fuel precharge.

In the case of a broken cord

We unscrew the starter motor mounting screw, take out the clamp and the damper spring, if your make of chain saw has one. We disassemble the pulley with the cord, untie or cut the cord knot and take it out. Since the cord is torn, the spring is unloaded and you don’t have to worry about it dropping out of the cover.

The cord is torn, the spring is discharged, you can not be afraid of the spring falling out of the cover during disassembly.

Remove the fragment of the torn cord from the handle

We take the new cord, select the appropriate length (based on the length of the old torn cord), divide, melt the ends of the cord, so that they are not “discharged”. We slip the new cord into the spool, tie the fixing knot and “hide” it in the pulley for free passage of the cord through the spool handle (on some models of chainsaws the cord is tied around the ratchet. so designed). Slip the free end of the cord through the hole in the starter cover and into the crank. Fix the cord in the handle with the knot. Wind the cord on the spool (pulley) to the appropriate side. Place the pulley in the starter cover over the return spring (and over the damper if there is one) and make sure that the spring engages with the coil. turn the coil slightly to the appropriate side. Secure the pulley with the sheave bolt.

See also  How to correctly assemble the starter motor of a STIHL 362 chain saw

Measure the new cord by the length of the damaged cord

Fuse the end of the cord before sliding it into the pulley to keep it from “loosening.

Slip the melted cord end into the technological hole through the sheave

Tie a knot at the end of the starter cord with the round pliers

Tie the knot in the pulley to allow the cord to freely run in the coil arm

Pull the free end of the cord through the opening in the starter cover and stick it into the crank.

The free end of the rope is slipped into the crank.

Tie a knot at the end of the cord in the handle to secure it

Fuse the loose knot of the starter cord in the handle

Then we need to charge (wind it up) the spring. To do this, pry the loose part of the cord with a screwdriver and pull it out. Grasp the cord with your hand and put it in the technological half-hole, which is on the edge of the spool. Make a few loops by turning the spool (pulley) by the cord in the direction of the tension.

Pick up the starter cord with your fingers or a screwdriver, pull it off and wrap it around the spool.

Wind the cord around the pulley on the tension side

Make a few coils of cord on the pulley for acceptable tension

Too little tension will “break” the edge of the pulley housing, and too much tension will adversely affect the return spring. Adjust the tension yourself.

We check the tension of the cord in the starter, pulling it up by the handle

How to repair the starter chain saw with your own hands

Repair of chain saw starter Partner / breakage starter cord

A broken cord

remove, chainsaw, starter, motor

Presents chainsaw starter repair after a broken starter cord. Without a starter cord, the chainsaw becomes completely nonfunctional, there is no other way to start the tool. Repair considered on 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 make the saw work, so I guess the first problem was a broken cord. The cord doesn’t break right away, first the protective stocking of the cord threads breaks and prevents the saw from starting. It is better not to wait for a break of all strings and fix the cord in advance. It is not necessary to invent anything, the repair should not cause difficulties, but the exact observance of the conditions of assembly is obligatory. The step-by-step instructions with the scheme of actions with photos and video are given below.

remove, chainsaw, starter, motor

Unscrew the three screws that secure the starter cover. The included spark plug wrench with a straight screwdriver is suitable for this process, but for faster work it is better to use a normal tool.

Remove the starter. The chainsaw is equipped with a soft starter mechanism, located above the cord reel.

We unscrew the screw fixing the soft starter mechanism and the starter coil. Be careful not to lose the washer!

Starter removed. Unscrew the screw

Soft starter mechanism Starter coil Remove the coil

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

Melt the ends of the rope in the fire so it does not unravel.

Tie a compound knot at one end. The hub needs to be large in diameter, but should not protrude when mounted on the coil.

Pull the cord through the hole in the spool. Do not coil up the cord!

Putting the spool back in place. There may be a mounting mistake here. Coil has two splines, one of which must catch the coil spring. Fit the reel so that it is snugly seated and the catch engages in the slot. Checked by turning the spool clockwise to determine if a return force is generated.

The knot on the cord The cord is fixed Protrusion of the spring

Installing the soft starter mechanism. The lug of the mechanism should fit into the recess of the spool.

Screw in the retaining screw and washer.

Threading the other end of the cord into the outlet.

Stihl Starter Pawl Replacement

Installation of the soft starter screw Screwed on Cord is pulled out

Tie the cord in the trigger handle. Tie a big knot at the end of the rope. With a small knot there is a chance that the cord will slip and the whole cord will get tangled in the starter and you will have to take the starter off again to get it out. Checking reliability. See photo.

Cord in trigger knob Locking knot Handle on cord Screw in spiral

Most important point! Let the loop of the cord inside the starter and start turning the starter mechanism clockwise without winding the cord! A minimum of five revolutions is needed for this saw. Fix the spool by hand. Tighten the noose by the handle outward. Holding the cord and mechanism allows the cord to be wound onto the spool. See video.

Put the starter in place and fasten it with three screws. Repair done.

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Renewed starter

Shogun starter motor removal and fit

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

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

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Tips from the pros

You may need to make 2-3 turns to accurately orient the holes in the body and the rope fixing channel.

In order to prevent the cord from slipping out of the pulley, it is necessary 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 at the assembly of the starter chain saw. A starter pulley and clamp are mounted on top of the pulley to prevent the mechanism from tipping during rotation.

As it turns out, the repair of chainsaw starter with their own hands does not require any special skills and tools. However, the starter mechanism should be restored responsibly and preventive inspections should be made from time to time.

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Device

The structure of the chainsaw starter includes the following elements:

  • ignition system screw;
  • return spring;
  • coil start system;
  • deflector;
  • cover;
  • magneto;
  • drum;
  • spark plug;
  • electronic unit;
  • electrical wiring;
  • power button;
  • handle and cable.
remove, chainsaw, starter, motor

The main parameters of the chainsaw starting system:

After the power button is pressed, the flywheel begins to rotate with the magnet that is on it.

An electric motive force appears in the system. The current that appears with the help of an electronic unit is converted into electrical signals, which are transmitted to the moving elements. Creates a spark that triggers the ignition of the fuel/air mixture.

Комментарии и мнения владельцев 38

thought, looked, chose, and bought a Huska, but not the “newer”, but an older model, the so-called American, a neighbor’s is newer, but one hundred percent even though the Swedish, but the Chinese, so even the sound they differ, his even somehow I would say rings, but mine is just ferrrrari.So far in a year burned five liters already (oil), drove the whole tire in the acacia, not even a hint of panting. Works as long as the man himself is not tired, how glad I am that I did not take this Chinese garbage. There is a grass mower, Chinese, I do not start the starter, so the gearbox or carburetor, if it would not start, I would have already thrown the hell out and would take a manual mower.

When 13-14 years ago I was involved in the wood was my Oleo-Mac 936, at that time a strange machine (compared to Husky Stilyamii Partners), a real Italian.So it worked its job without censure.And here, what can be a serious demand, with the Chinese saw.The starter spring broke on the Oleo-Mac several times.

I was offered, but I turned it down, because for me it is also “outlandish”, then I was afraid to run to the parts, I did not know what it is eaten with.

great! I’ve got the same shit but a Patriot Garden.worked for three years, made a lot of firewood for heating seasons.I had the exact same breakdown. The tip of the return spring was breaking off.Bend it again and it’s fine. Apparently this is a universal bug.

How to assemble the starter correctly

The nuances of construction and the interaction of parts of the mechanism determine the complexity of its maintenance. A chainsaw manual starter consists of a minimal set of components whose operation is based on an extremely simple principle that is intuitive to understand at the first, thoughtful disassembly. To explain how to assemble a chain saw starter motor, you can very briefly, with a couple or three sentences below:

The ribbon spring is inserted into its housing and fitted to the starter with it. The drum with the fixed cord is placed on the spring, clinging by its notch to its ear. The design is clamped with a screw and washer through a hole in the ratchet.

This quick tour covers the main assembly steps. A more detailed description of each movement, with the nuances of the different models, the cord tensioning process and the replacement of the dogs, is clearly presented in the instructions outlined above. Choose a subject you are interested in, read, watch and realize.

How to Properly Put the Starter on a Chainsaw

How to start a chainsaw: a couple of effective ways

Chainsaws differ in design features, but in most cases the principle of assembly follows two standard schemes. Many devices in the manual contain information about the need to engage the emergency brake before starting the on/off procedure.

One must first master the plant and learn the basic troubleshooting techniques, then one will have full control of the unit.

Briefly about the plant structure

The chainsaw is powered by the. This is a simple device whose design has no special bells and whistles. It usually works fine even in harsh conditions.Read about the device of the plant Functionality is provided by the structural elements:

  • Carburetor motor (see “The Chain Saw”). carburetor adjustment).
  • Centrifugal clutch.
  • The ignition system, virtually contactless in all devices.
  • Carburetor that adds air to the fuel mixture.
  • Fuel system. Its standard device consists of a hose, a filter and a gas cylinder, but sometimes it also has additional parts.
  • Starter.
  • Shooting gallery.
  • Chain (see Chain. Chain oil).
  • Tensioner and chain brake (see Chain., How to sharpen a chain).
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Step-by-Step Instructions

When the brake is activated, the assembly process is much slower, so it is also safer and more convenient to engage the gear without using brake equipment.

If one is not confident in one’s knowledge and accuracy, then the brake should be activated the other way around. If the procedure is correct, the device does not start, the mechanism does not make it dangerous for human action.

1 scheme of the standard mechanism

  • Before you start the gasoline, you need to move the flap, which acts as a control lever, to the bottom, compared to the optimal position. First press the button responsible for the gas supply. Only if this condition is met can the damper be moved normally to the bottom stop.

The starter knob is jerked again then until the system starts. When the unit begins to operate actively, high speed is immediately noticeable, as the throttle is at a high level. It should be remembered that sometimes chain saws are supplied without a starter, then all the operations with this element are made.

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Also our article will help you make a choice in favor of this or that brand of chainsaw.

This chainsaw is made in Russia. Low price with quite high quality.

2 diagrams of a standard chain saw

  • The ignition is on. To do this, turn the rocker switch to the right position or move the switch.
  • You usually need to push the ground to pump more than twice. Gasoline is poured into it, after which you need to press the device more than three times.

You need to take the crank of the starter and tighten in a sharp motion until you hear the ignition process. It is marked by establishment and almost instantaneous engine shutdown. The flap should then be retracted to its original position, checking its reach to the stop.

Again, the starter handle is pulled to the location of the device. Before carrying out this action, you need to make sure that this is the way to get a chainsaw. Some units have a new ignition system.

Chainsaw starter repair. With their own hands.

How to Make a Starter on a Chainsaw by Yourself? How to bend the spring on a chainsaw starter motor? How to wind the spring

Repair the chain saw starter with your own hands

Chinese chainsaw 5 piece starter link-

When the machine stops all the time, you need to restart it systematically (see., What to do when the chainsaw stops when you press the gas). After some time the engine will gain momentum and can maintain active operation without interruption.

For more information, see.

If not successful

When all the actions are performed in accordance with the established order, and the chainsaw does not start, then its mechanism malfunctions.

Common problems that are easy to fix, such as no spark. clogging of the air filter are common causes of this phenomenon. To start the chainsaw, you will need to find the cause and take the necessary steps to fix it.

Rules must be followed Only the right steps must be taken. If a person doesn’t know what to do, a person doesn’t need to commit rash. Disassembly of the unit is prohibited, especially care should be taken with the carburetor.

Do not loosen the screws on it, as if its device caused a breakdown, then without professional equipment is impossible to repair the chainsaw.

Lists the activities that must be performed in strict order. Only when moving from one activity to the next can you determine the exact cause of the problem and quickly fix it without damaging other parts. Algorithm of actions to be taken in case of chain saw failure:

  • First of all, this is enough for the device to remain. This is especially true for saws that have been in use recently. It is enough to wait no more than 10 minutes, because during this time the mechanism will cool down, and if there are no other breaks, it will start easily. Sometimes it happens that a candle is poured on the appliance during the establishment. If this unpleasant property has occurred, it is enough to wait for a very short pause and repeat all the steps for winding the motor.
  • The housing cover is unscrewed from the device to remove the air filter. The process of planting the device is done in its absence. Sometimes the reason for the lack of ignition is the contamination of the filter. If ignition has occurred without it, this is the cause. To fix these problems, it is enough to wash the filter under running, warm water with soap and then dry. You can also replace the old element with a new.
  • The spark plug is removed. There is a spark test. If it doesn’t show up, you need to replace the old spark plug with a new one. This usually helps, and a spark appears, but in some cases, and when the mixture is replaced, there is no spark.

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