How To Fill The Chainsaw Starter Spring

How To Fill The Chainsaw Starter Spring

How to repair a trimmer starter How to repair a trimmer starter with your own hands. How to disassemble and assemble the starter, wind the spring and replace the cord.

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 trimmer model used and corresponding to the length of the cord used;
  • At the very end, the rope is threaded into the hole provided 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.

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

The gasoline engine is, in principle, the main part of the brushcutter. Its power lies 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).

The petrol brush also has the following elements:

  • Protective casing;
  • Lever;
  • Belt designed for the convenience of using the device;
  • A starter used to start a gasoline internal combustion engine.

All details of the brushcutter are presented in the graph below.

The trimmer starter is the integral part that starts the engine. He is depicted separately on the two below.

The starter mechanisms of various models of petrol brushes work on the same principle: during the start of the internal combustion engine, the protrusions marked with 1 in the graph above engage with the pawls 3. When the engine starts to work, they return to their previous position due to the centrifugal force. The wires 2 also play a similar role.

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, the petrol mowers, the starting mechanism turns its shaft until it starts to work (starts).

To date, gasoline brushcutters are equipped with two types of starter mechanisms:

  • Manual;
  • Electric.

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 compliance with the rules for handling it.

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.

These details are shown in the graph below.

It may happen that the starter mechanism is accidentally broken. The consequences will be disastrous if the torn 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, it is enough to install a new spring or replace the cord to fix the mechanism.

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.

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 has 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 graphs 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.

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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 does not take much time and does not require 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.

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 trimmer model used and corresponding to the length of the cord used;
  • At the very end, the rope is threaded into the hole provided 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 has 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 graphs 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.

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.

These details are shown in the graph below.

It may happen that the starter mechanism is accidentally broken. The consequences will be disastrous if the torn 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, it is enough to install a new spring or replace the cord to fix the mechanism.

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

The gasoline engine is, in principle, the main part of the brushcutter. Its power lies 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).

The petrol brush also has the following elements:

  • Protective casing;
  • Lever;
  • Belt designed for the convenience of using the device;
  • A starter used to start a gasoline internal combustion engine.

All details of the brushcutter are presented in the graph below.

The trimmer starter is the integral part that starts the engine. He is depicted separately on the two below.

The starter mechanisms of various models of petrol brushes work on the same principle: during the start of the internal combustion engine, the protrusions marked with 1 in the graph above engage with the pawls 3. When the engine starts to work, they return to their previous position due to the centrifugal force. The wires 2 also play a similar role.

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, the petrol mowers, the starting mechanism turns its shaft until it starts to work (starts).

To date, gasoline brushcutters are equipped with two types of starter mechanisms:

  • Manual;
  • Electric.

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 compliance with the rules for handling it.

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.

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 does not take much time and does not require 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.

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Typical malfunctions

The most common tool breakdowns include:

  • Problems in the ignition system;
  • Stopping the chainsaw in the process of cutting;
  • Loss of power during operation;
  • Wear of some structural elements of the chainsaw (brake band, drive sprockets, anti-vibration parts);
  • Problems in the fuel supply system;
  • Malfunctions associated with the starter.

In addition, it is necessary to carry out a visual inspection of the chainsaw before starting work and preventive measures. These include chain lubrication, control of the amount of fuel mixture, and the availability of the required amount of oil.

The spark plug is unscrewed to check its condition.

Each of the faults is eliminated according to its own technology. So, for example, repairing the fuel system of a chainsaw should begin with an inspection of the appropriate filter. After that, they check the correctness of the carburetor regulation, which is carried out using the screws. Clearances must be set in strict accordance with the manufacturer’s instructions, which must be included with the chainsaw. Ignition system repair includes spark plug inspections. This element must be replaced if heavy carbon deposits, a change in the gap or other visible damage are found.

Do-it-yourself high-quality chainsaw starter repair

The chainsaw is the main tool with which you can stock up on firewood for a bath or fireplace, and you can also use it during construction work at a summer cottage or in a private house. Subject to all operating conditions and preventive measures that are provided by the manufacturer, the chainsaw can last a long time. But over time, minor malfunctions may occur that you can deal with yourself. For example, repairing a chainsaw starter with your own hands is quite possible, subject to the sequence of operations.

Chainsaw starter device: 1- starter screw, 2 bushing, 3 easy start spring, 4 screw, 5, 6 starter coil, 7 deflector, 8 starter cover, 9 handle and cord, 10 screw.

Starter repair work

Starter problems may prevent the tool from starting. That is, after the cord is pulled, the chainsaw does not start working.

The reasons for the malfunction are:

  • Broken or cracked pulley;
  • Broken spring;
  • A rush of the launching cable.

Before repairing the starter, you need to prepare the tools with which to perform the work:

  • A set of screwdrivers or a special tool that is supplied by the manufacturer in the kit with the tool;
  • A rope that will be used as a replacement for a broken cord if necessary.

A large amount of black carbon on the spark plug indicates a malfunctioning engine.

Before proceeding directly with the repair of the starter and finding out the causes of malfunctions, it is necessary to remove it from the tool body. To do this, you must unscrew a few screws holding the side cover to which the starter is attached. This is done with a screwdriver or specialized tool.

After the cover is unscrewed, it is turned over and inspected. Next, unscrew the screw with which the starter is fixed. After that, dismantle the clamp and the spring for a smooth start. Now the pulley is accessible for removal, on which the cord is wound. After the knot on the rope has been untied, it can be removed from the pulley and replaced with a new one. Provided that the loss of starter performance is associated with a break, this may be sufficient to eliminate the breakdown. However, the rest of the parts that make up this element of the chainsaw should be carefully inspected.

When inspecting the components of the starter, the following malfunctions may be detected:

Most often, damage to the soft-start spring occurs from the end where it is visible when the housing is disassembled.

  1. The pulley could be damaged. There may be cracks or tears or damage to the back. As a result of these problems, the tool cannot perform work.
  2. Damaged soft start spring. In this case, both the spring itself may be mechanically defective, and there may be defects in the place of its attachment. The weakest point of this element is precisely the fastening point and the tip of the spring, which is inserted into it.

If defective or partially damaged starter parts are found, they must be replaced with new ones. In this case, the new elements must correspond to the repaired saw model.

The pulley is installed over the spring. In this case, it is necessary to check how much they adhere to each other. In the course of repairs, it is necessary to wind the pulley. This must be done in such a way that when rotating it pulls the cord into the starter. It is enough to make 3-4 turns to give the required voltage. First, the rope is passed through the hole in the cover of the chainsaw.

Practical advice

You may need to make a few more turns to match the cord retention holes in the pulley and housing. A new rope is threaded through a technological hole and a loop or knot is made: this will allow it to slide out of the pulley. 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 as before 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. 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 fixed.

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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, but 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 inspections, monitor the quality of the fuel and oil used. These simple manipulations will increase the duration of the tool in working condition.

How does the starter for petrol cutters or trimmers work?

The starter mechanism is generally a single and universal mechanism for petrol cutters, trimmers, gasoline and diesel generator sets. It is not a problem to equip them even with a car, motorcycle or scooter, if your vehicle has free space for its installation. It was not for nothing that many Soviet cars and trucks were equipped with a starter tool that remotely resembles a crowbar bent twice.

The starter assembly has the following parts:

  • Hook ignition spring;
  • Cord wound on a reel;
  • Return spring;
  • Ratchet drive and main spring;
  • Mechanism housing protecting the ratchet;
  • Locking bolt.

How to assemble a new mower starter?

For starter assembly do the following manipulations.

  1. Pass one end of the cord through the opening at the beginning of the spool and tie it in a knot. The knot must not pass through the hole. Otherwise, you will disassemble the starter again.
  2. Wind the cord around the spool itself.
  3. Install the spring into the starter housing, hook one end of it in the groove and wind it. For convenient winding, twist the body counterclockwise.
  4. Place the ratchet on the spring.
  5. Hook the return spring to the ratchet itself, secure it to the spool.
  6. Install the main spring and housing with the assembled ratchet, connect the starter parts together and tighten with the main bolt.

After assembling the starter, pass the free end of the cord through the hole in the housing for the reel. Pass this end again through the hole in the handle that the cord is pulling on. Tie a strong knot on the handle. Check the operation of the starter handbrake.

How tight is the spring cocking?

It is possible to give the spring the necessary potential force required for a clear and fast winding of the cord by determining the length of the cord in turns. To prevent the cord handle from drooping, add 1-2 more turns to the number of turns. So, if the cord has a length of 5 turns of the coil, then, when charging the spring, turn the coil 6-7 full turns.

Starters for petrol cutters: device and installation features

  1. How does the starter for petrol cutters or trimmers work?
  2. Worst failure scenario
  3. How do I replace or replace the starter spring?
  4. How tight is the spring cocking?
  5. Assembling a brushcutter starter
  6. How to assemble a new mower starter?
  7. How do I change the starter cord?

The recoil starter for a petrol cutter or petrol trimmer is a mechanical unit that includes a pulley fitted to a ratchet. A rope is wound on the pulley in the initial position. At the start, it is pulled outward. The pulley is spring loaded as soon as you let go of the end of the rope, as it reels back. A flat strip rolled into a ring is used as a spring. It resembles a spring in a large mechanical watch that is wound once a day. The starter itself is located more often at the rear than closer to the front end of the mower or trimmer. In order to correctly perform all the manipulations with the petrol cutter starter, you need to know the features of the device and installation.

Worst failure scenario

There are times when the starter is still operational, but a worn out cord can break, for example. The ratchet has not yet had time to work when the engine is started, and the remnants of the cord are immediately wound on the coil, the return spring loses its hooks, the grooves in the starter housing break. The result is the replacement of both the springs and the housing.

How do I replace or replace the starter spring?

If everything is in order with the rope on the starter, suspicion falls on the reel itself. It is activated by a ribbon spring, coiled into a roll. Certain steps must be taken to change the spring.

  1. Remove the starter from the brushcutter.
  2. Remove the starter coil.
  3. Unscrew the main bolt holding the pulley to the housing.
  4. Pull out the gripping tendrils and spring, the ribbon spring is almost fully extended or coiled into larger rings.
  5. Hold it in advance.
  6. Check if the spring is intact (there may be rusty streaks, cracks, etc.). If the hooks at its ends are broken, bending new ones will fail. High carbon steel breaks when you try to bend it. Loose hooks are suitable for slight bending.
  7. Make sure the auxiliary (regular) spring and washers are in place. These parts protect the coil body from being punctured by the ends of the main spring. If the washers and the spring are broken, and new ones are not available, do not tighten the coil bolt tightly, but watch it, it can unscrew and get lost.
  8. If the main (flat) spring is damaged, insert the same new one. Place the hook on the end of the spring in place and bend it, inserting coil by coil into the space it should be.

The rewinding of the spring takes a minute. Dexterity in this action is acquired quickly.