How to put a starter on a Husqvarna trimmer

How To Replace The Pull Cord ( Recoil Spring! ) On Husqvarna Strimmers,

Removal and disassembly of the starter, replacement of broken parts

To repair the trimmer starter, you will first need to disassemble it, and then assemble it. This process is not particularly difficult. For work, you need a screwdriver with a tip of the desired shape.

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

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:

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

The above details are shown in the photo below.

Husqvarna String Trimmer Starter Pawl Replacement #503873305

starter, husqvarna, trimmer

It may happen that the starter mechanism is accidentally broken. The consequences will be disastrous if the 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 unit is required, are extremely rare. In most cases, to fix the mechanism, it is enough to install a new spring or replace the cord.

How to repair a trimmer starter

Petrol trimmer starter repair may be required at the most inopportune moment. In this case, the problem can be solved in two ways: replace the broken part or change the entire unit. The latter option will cost more. To repair the device with your own hands, in most cases, you only need a screwdriver with the appropriate tip from the tools. Repair work will not take much time and do not require any 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.

Starter assembly

The assembly of the starter unit 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 body, as in the photo below;
  • two washers are laid, between which a spring is placed;
  • put in place the cup with the antennae;
  • tighten the screw (photos below).

When doing the described manipulations, it is imperative to put two washers. If this is not done, then the spring will damage the plastic cup over time, and when it is pulled up, 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 greater length or an additional washer.

When such parts are not available, you can simply unscrew the screw a little, and the starter unit will start working without wedging. But this option is temporary. it is better to repair it with high quality as soon as possible.

Spring tension

After installing the spring, tighten it. To do this, perform the following actions:

  • remove the handle from the starter cord;
  • then the rope is inserted into the reel groove;
  • tension the spring by rotating the coil in the opposite direction to the clockwise direction (winding);
  • make the required number of revolutions specified in the operating instructions for the used trimmer model 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 fly off, then you can get rid of it in the following ways:

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

Disassembly of the starter unit

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

  • unscrew with a screwdriver the screw fixing the pulley with the starter cover;
  • take out the spring and antennae;
  • carefully remove the pulley (you need to turn your head away or work, wearing glasses and gloves first);
  • determine why the trigger is broken;
  • if the spring has collapsed almost completely, then it is replaced;
  • when the spring comes out of the hook, it is installed in its original place, bending the antennae before this (the photographs show the laying process);
  • after the spring plate is installed inside the groove, carefully twist it.

To change the spring, you must 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 spring strip very quickly flies off the reel 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.

The device and principle of operation of the starter on the trimmer

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

Also, lawn mowers have the following elements:

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

All parts of the lawn mowers are presented in the photo below.

The trimmer starter is an integral part that starts the engine. He is shown separately in the two photos below.

The starter mechanisms of the different models of lawn mowers work on the same principle: when the engine starts, the protrusions marked with 1 in the photo above engage with the pawls 3. When the engine starts to work, they return to their previous position due to the influence of centrifugal force. A similar role is also played by wires 2.

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 releasing the cord, it is pulled in and wound up due to the coiling of the spring. During the start of the internal combustion engine lawn mowers, the starting mechanism turns its shaft until it starts to work (starts).

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

  • manual;
  • electric.
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The first option is much more common.

The trimmer starter can operate without breakdowns for a long time. It is impossible to clearly indicate the period of uptime. Everything is determined by the initial quality of the device and the observance of the rules for handling it.

Chainsaw starter device

The principle of operation of a starter for a chainsaw is as follows. A handle is installed in the groove of the body, through which a cable is passed. If the handle is lifted sharply, the cable is pulled out and engages the drum of the ratchet mechanism, which transfers the movement to the drum with splines provided on the shaft. In this case, the crankshaft makes several revolutions, and the working mixture in the space between the piston and the cylinder head is compressed. Accordingly, when the handle is lowered, contact between the ratchet and the splines is lost, and the shaft stops.

With an increase in engine volume, the required amount of the fuel-air mixture required for its subsequent ignition also increases, so the number of jerks for the starting cable for high-power saws increases. Therefore, in order to accelerate the return of the drum, unwanted return springs are used, made of steels with high elastic properties.

Facilitation of starting the chainsaw is implemented in the following ways:

  • By preliminary enrichment of the working mixture, for which there is a special damper in the carburetor design.
  • Installation of an automatic decompression valve, which reduces the working pressure in the cylinder of the chainsaw.
  • Installation of an additional spring, which, during the movement of the cable, facilitates the unwinding of the crankshaft.
  • The presence in the design of some chainsaws (for example, Partner S series, Maxcut, etc.) a primer. a pump that provides preliminary fuel pumping.

Spring repair

Procedure for repairing the starting system spring:

  • Remove the starter from the tool body.
  • Remove the protective cover.
  • Wind the cord from the end of the pulley to avoid twisting the mechanism.
  • Pass the other end of the cord through the hole in the protective cover.
  • Pull the cord 17-20 cm to check the rotation of the spring mechanism pulley.
  • Check the operation of the spring after pulling out and releasing the mechanism.
  • Unscrew the pulley circle from the side of the generator by removing the 3 mounting bolts.
  • Dismantle the pulley and cord.
  • Check the condition of the parts for wear and damage or breakage. If the spring break is small, then the defect can be eliminated by welding.

Chainsaw starter: device, breakdowns and DIY repair

In the design of the chainsaw, the starter is responsible for the proper starting of the engine of the tool. Over time, owners of chainsaws 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 succumb to wear.

How to repair a chainsaw starter with your own hands

If difficulties arise during starting the tool, power has disappeared or there are malfunctions in the fuel supply system, then it is necessary to repair the chainsaw starter with your own hands or return the tool to service.

How to put a spring on a chainsaw starter?

Fitting the starter spring into the correct groove is not easy, even for an experienced user. First, the spring should be twisted to the previous diameter and installed in the cavity of the drum hub. The outer end of the spring is fixed by the stopping lug, and the outer end with a screwdriver should be positioned opposite the hole in the lock. The loop at the inner end of the spring is aligned with the hole with a screwdriver, after which the disc is lowered. By rotating the disc, check whether the ratchet dog has fallen into place. Next, the ratchet itself is assembled.

After installing the spring, it is necessary to adjust its tension. To do this, a cable is inserted into the groove on the circumference, and a return spring is twisted around it. After removing the slack, it is better to wind the spring an additional few turns to ensure the required tension on the part.

Replacing the starter

Procedure for replacing the chainsaw starter:

  • Remove the assembly from the tool body.
  • Unscrew the fastening bolts and remove the side cover.
  • Unscrew the fastening screw with which the starter is attached.
  • Remove the clamp and spring mechanism of the starting system.
  • Dismantle the pulley with a cord.
  • Replace all worn and damaged parts.
  • Wrap the pulley.
  • Install a new starter.
  • Reinstall the pulley with cord, clamp and spring.
  • Screw on the side cover and install the assembly on the chainsaw body.

Before installing a new starter, it is recommended to inspect it for defects, check the build quality and the presence of a guide sleeve.

How to install a chainsaw starter spring

Chainsaw starter

The starter is one of the most important mechanisms in any modern chainsaw. It is on him that the engine start of the tool depends on all weather conditions. The chainsaw starter stands out for its simple design, it is easy to maintain and repair it yourself. However, in order to fix the breakdown, you must first find its cause. To do this, most often it is required to completely disassemble the standard mechanism.

Chainsaw starter: DIY repair

A chainsaw is an indispensable tool when cutting firewood and felling trees. Following the manufacturer’s recommendations and taking the necessary preventive measures will ensure a long “life” of the unit.

But even the most reliable mechanism has problems over time, most of which can be eliminated by hand without the help of specialized centers.

One of such malfunctions may be in the chainsaw starter, which can be repaired independently, subject to a certain sequence of operations.

Practical advice

You may need to make a few more turns in order to match the holes for securing the cord in the pulley and the body.

A new rope is threaded through a technological hole and a loop or knot is made: this will allow it to slip out of the pulley. how to insert a spring in the repair of a chainsaw installing a spring in a manual starter.

The rope is taken to the side so that it does not interfere with further work. Next, you need to fix the pulley.

First you need to reinstall the soft start spring. It can be used the old one if no damage is found in it. or new if necessary. A starter clamp is installed on top of the spring, which is fixed with a special screw.

It reliably fixes the clamp for a long time, preventing it from skewing and swinging. Installing a spring in a recoil starter how to insert a spring into a plm chainsaw starter how. After that, you need to make several turns of the rope and run it inside. The cover with the assembled starter is installed in place.

With the help of screws, it is fastened.

After the completion of the repair and assembly, you can start working. Self-repair of a starter does not take much time and does not require complex skills, however, it saves time and money if you perform such work in a service center.

It is necessary to approach the repair of a chainsaw responsibly and timely carry out preventive examinations, monitor the quality of the fuel and oil used. how to insert a spring in a chainsaw starter repair how to do it yourself. These simple manipulations will increase the duration of the tool in working condition.

Chainsaw starter diagnostics

Due to the long-term operation of the chainsaw, the starting mechanism becomes unusable. After one or more jerks while pulling the starter rope, the crankshaft will not turn. This problem can be caused by the following reasons:

  • cracked or broken drive pulley;
  • the chainsaw starter spring burst;
  • gust of launch rope.
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Before starting work on diagnostics and repair of the launch mechanism, it is necessary to prepare the necessary tools and accessories, which will significantly reduce the time for operations. These include:

  • A set of locksmith’s screwdrivers and a specialized set of proprietary tools included in the delivery of the chainsaw.
  • Durable lanyard to replace worn-out starting rope.

Chainsaw starter spring

At the first stage of repairing a chainsaw starter, it is necessary to identify the nature of the problem. To do this, remove the side cover from the side of the starting mechanism, while unscrewing only a few screws. Depending on the manufacturer, this operation will require a specialized or conventional plumbing screwdriver.

Next, we inspect the inside of the protective casing. In the absence of cracks and chips of plastic, we proceed directly to diagnostics of the launch unit.

How to Start a Husqvarna String Trimmer

We unscrew the central bolt of the starter and dismantle the spring. There should be no cracks or tears on its surface.

It is problematic to choose a spring similar in force and number of turns on your own, therefore you will need the help of specialized centers.

After removing the clamp and the chainsaw starter spring, a pulley with a wound cord is available for dismantling. The integrity of the rope indicates that every detail of the launch mechanism needs to be carefully reviewed.

If the shaft does not seize

When you try to start the chainsaw, the cord pull is “idle”, ie there is no engagement with the shaft. The operator jerks the starter to no avail, the cord unwinds along the pulley and unwinds without resistance. What is the reason?

The fault lies in a burst damper spring (“easy start”, “soft start mechanism”). If you remove the starter cover, the breakage is easily detected, since most often the spring bursts closer to the cover. However, it is not the damper spring itself that can break, but its attachment point.

If the spring has burst, then only replacing it with a new one will help to eliminate the malfunction. That is why, I am not a fan of chainsaws with a soft start system. Of course, I do not impose my tastes and opinions on any of my colleagues. everyone has the right to decide their own preferences in this choice of a chainsaw model.

Another reason for the lack of reliable engagement with the shaft may be a defect in the ratchet. We are talking about a model of ratchets with a plastic gear, when the teeth for engagement are cracked and chipped. In this case, it is also necessary to replace this unit. that is, the ratchet mechanism. Better to have a model of a chainsaw with a steel ratchet.

By the way, the “dogs” on the flywheel shaft can also cover themselves. the springs that perform the return function burst, and as a result, the clutch with the ratchet disappears.

A similar malfunction has also occurred in my personal practice. Springs of “dogs” were made from rope fragments (from veins). But it was worth incredible patience, time and concentration.

I am sure that you should not be similarly perverted and work with another chainsaw.

The fact is that during the final screwing of the cover, the user of the chainsaw does not check the engagement by turning the starter and the ratchet rests on top of the “dogs”, and in this case there is no engagement. An inexperienced operator is perplexed and does not understand the cause of the malfunction.

Disassembles and assembles again, until he guesses (or until a more experienced colleague prompts him) about the correct assembly of the starter.

Typical breakdowns and repairs of the chainsaw starter

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

  • The starter pulley is completely burst or cracked;
  • The spring has burst;
  • Starter rope broke.

To fix each of these faults with your own hands, you will need certain tools. You must have a set of screwdrivers and a spare cable with you. It is necessary to remove and inspect the starter for the chainsaw in the following order:

  • To find the cause of the breakdown, the starter will need to be removed from the chainsaw. To do this, unscrew the screws with a screwdriver, with which the protective cover with the starter attached to it is held;
  • After removing the cover, you must carefully unscrew the screw by means of which the starter is attached to the protective cover;
  • Then you need to try to smoothly start the starter. for this, remove the spring and clamps from it;
  • Further, a coil with a cable is removed from the starter for inspection.

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

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

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

Chainsaw starter repair

With frequent starts of the chainsaw, some parts of the starter are constantly subjected to dynamic loads. As a result, the cable may burst, several ratchet teeth crumble, and the shaft will turn at a much lower speed. Therefore, the revision and even repair of the starter are operations that are sometimes carried out several times per season.

If the cord breaks

We unscrew the starter mounting screw, remove the clamp and the damper spring, if there is one on your brand of chainsaw. We dismantle the pulley with the cord, untie or cut off the cord knot, remove it. Since the cord is torn, the spring is discharged, and, in principle, you can not be afraid of the spring falling out of the cover.

We unscrew the screws securing the starter

Remove the starter cover

The cord is torn, the spring is discharged, there is no need to be afraid of the spring falling out of the cover during parsing.

Dismantle the torn pulley cord

Removing a fragment of the torn cord from the handle

We take a new cord, select the appropriate length (focusing on the length of the old broken cord), divide, melt the ends of the cord, so that they do not “shake”.

We push a new cord into the spool, tie a fixing knot and “hide” it in the pulley for the unhindered running of the cord along the coil stream (on some models of chainsaws, the cord is tied around the ratchet. this is provided by the design).

We pass the free end of the cord through the hole in the starter cover and push it into the handle. We fix the cord in the handle using a knot. We wind the cord on a reel (pulley) in the appropriate direction.

We place the pulley in the starter cover over the return spring (and over the damper, if any) and make sure that the spring is engaged with the coil. slightly turn the coil in the appropriate direction. We fix the pulley with a mounting screw.

We measure the new cord along the length of the damaged cord

We melt the end of the cord, before threading it into the pulley so that they do not “shake”.

We push the melted end of the cord into the technological hole through the pulley

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Putting a new cord into the spool.

Tie a knot at the end of the starter cord using round nose pliers

We “hide” the knotted fixing knot in the pulley for the smooth running of the cord along the reel stream

We pass the free end of the cord through the hole in the starter cover and push it into the handle.

Push the free end of the cord into the handle.

Tie a knot at the end of the cord in the handle for fixing

We melt the free knot of the starter cord in the handle

Next, you need to charge (charge) the spring. To do this, pry on the free part of the cord with a screwdriver and pull it out. We grab the cord with our hand, place it in the technological half-hole, which is located at the edge of the coil. We make several turns, turning the coil (pulley) by the cord in the direction of tension.

We pry the starter cord with our fingers or a screwdriver, pull it back and wind it on the reel.

How many turns to make?

We wind the cord on the pulley in the direction of tension

We make several turns of the cord on the pulley for an acceptable tension

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

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

Reinstall the starter cover and fasten with screws

When the spring is charged, the starter is installed in place. the cover is screwed onto the chainsaw. During screwing, the fastening screws are slightly tightened, and the starter must be turned to fully seat and engage the pulley with the flywheel pawls.

Chainsaw starter

The starter is one of the most important mechanisms in any modern chainsaw. It is on him that the engine start of the tool depends on all weather conditions. The chainsaw starter stands out for its simple design, it is easy to maintain and repair it yourself. However, in order to fix the breakdown, you must first find its cause. To do this, most often it is required to completely disassemble the standard mechanism.

How to put a spring on a chainsaw starter?

Fitting the spring into the correct groove is a tricky task. First of all, the part will need to be twisted, returning it to its previous dimensions. After that, it must be inserted into the cavity of the standard drum hub. To fill the spring in the chainsaw starter, you need to proceed in this order:

  • The outer end of the spring used must be fixed in a special stop lug. In this case, the second end with a screwdriver will need to be installed opposite the standard hole inside the lock;
  • Next, the loop located at the inner end of the standard spring should be aligned with the hole. It is best to use a screwdriver for this. When the ends are aligned, the disc will need to be lowered;
  • After installing the disc, you need to check that the dog of the factory ratchet mechanism of the chainsaw is in its original place. Then you can assemble the ratchet in reverse order.

To wind the spring on the chainsaw starter, you need to take into account all the holes and notches available. After installation, you will need to tighten the spring. As soon as the slack is eliminated, the spring will remain to be wound a few turns. this is necessary to maintain the required tension of the installed part.

Chainsaw starter device

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

These include:

  • coil;
  • cable;
  • the frame to which the return spring is attached;
  • a pen.

A protective cover is installed on top of all elements of the starter. The original principle of operation of most of the triggers is also almost the same. In a special groove in the chainsaw body there is a handle that holds the cable. When the handle is raised sharply, the latter is understood. At this moment, a ratchet is triggered, which, through the drum, transfers the force to another drum with splines located on the engine shaft.

When pulling out the standard 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 standard piston.

With an increase in the volume of the internal combustion engine cylinder, the amount of consumed fuel mixture, which is required for its future ignition, also increases. Consequently, the operator of a powerful saw needs more jerking strokes than the owner of a low power tool. Powerful chainsaw manufacturers use resilient return springs to increase the speed at which the drum returns to its original position.

How to assemble a starter on a chainsaw?

After replacing the faulty elements of the starter, the turn of its reassembly comes. In this case, maximum accuracy must be observed, since the slightest discrepancy can lead to damage to the trigger. The assembly of the assembly should be performed in the following sequence:

  • The standard cable will need to be tucked into the factory hole of the reel. At the same time, the cord does not need to be wound;
  • Next, you will need to insert the coil into its base place. At this stage, many beginners make a common mistake. There are 2 slots on the surface of the coil. One of them should get the regular hook of the coil spring. To do this, the coil will need to be installed in such a way that it fits snugly into its original place, and the existing hook fits exactly into the slot. The correctness of installation must be checked by turning the coil in the direction of the clock hand until resistance appears;
  • Then you need to install a device for easy starting of the chainsaw. In this case, the protrusion of the latter should be located in the recess of the installed coil;
  • After that, you will need a screw and washer to fix the device;
  • Next, the other end of the cord must be tucked into a special outlet;
  • In the next step, you will need to thread the cable into the starter handle. To this end, you will need to tie a medium-sized knot at the end of the cord. If it is too small, then the cable will slip, which is why it will quickly wind up on the drum of the trigger mechanism;
  • Then you need to release the loop inside the starter. Immediately after this, you should start the rotation of the trigger mechanism in the direction of the clock hand. In this case, the cord does not need to be wound. Next, you need to fix the coil with your hand, and pull the loop out by the handle;
  • After that, you need to check the operation of the trigger;
  • If the unit is working properly, it remains to install it on the tool, and attach with three screws.

Starter repair is not a complicated procedure if you follow the correct procedure. As a rule, replacing the starter cord will take no more than 20 minutes. The main thing is to correctly position the pulley and drum in relation to each other. Otherwise, the trigger will not work.