How to install a saw ignition

HOW TO LEAVE THE IGNITION COIL CLEARANCE, Partner chainsaw, McCulloch, Jonsered, the magneto clearance

The video talks about the ease of adjusting the magneto gap using the wall of a plastic bottle. Repairs.

So let’s get started!

What is still useful for you?
  • First, an annotation on the operation of the device itself.
  • Secondly, the tachometer. Features and benefits of the Partner 371 chainsaw and technical characteristics of the partner 371, self-adjusting ignition and carburetor. Why exactly it is useful to us, we will discern a little later.
  • B-3. screwdriver.

Surprisingly, this is all we need.

To get started, take a close look at the construction of your saw. What you need to do first is find where the carburetor jets are, and even more important than the jets, the adjusting screws. The price of the Partner 350 chainsaw from 5 adjustment of the chainsaw carburetor work. video. Usually, there should be two to three screws. Setting up the Partner 350 s chainsaw, adjusting the carburetor of the Partner 350 chainsaw. One of them regulates the idle speed, and the other two. low and high.

Specifically, they will need to be adjusted for you, or twisted, or unscrewed in order to enrich or deplete the fuel mixture.

If you need to deplete the mixture, then simply turn the regulator clockwise, if it is enriched, then accordingly.

To adjust the idle speed, the screw that is responsible for this must also either be turned clockwise in order to increase the speed, or, you guessed it, in the opposite direction to decrease them.

How the ignition of a chainsaw works and how it works, their main malfunctions and elimination

Gasoline saws are necessarily equipped with an ignition system. It is necessary for timely ignition of the fuel mixture in the engine cylinder. Therefore, it is so necessary to install the ignition on a chainsaw and its periodic adjustment, since the tool simply will not start without a spark.

install, ignition

How to set the ignition on a Partner 350 chainsaw

How does the ignition of a chainsaw work and how does it work?

The structure of the carburetor engine does not depend on the model of the tool. Therefore, we can talk about a standard chainsaw ignition system. It consists of the following elements:

  • Magneto. It is an alternating current generator. Required to supply the spark plug with electrical current. Outwardly, this part looks like a stationary winding of an inductor and a permanent magnet, which is fixed on the flywheel. The latter rotates simultaneously with the engine crankshaft.
  • Spark plug.
  • An electrical cable that connects the 2 previous elements.
  • Disconnect buttons.
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The chainsaw ignition scheme is simple. After starting the tool, a rotating magnetic field is generated due to the movement of the flywheel and crankshaft. It creates a moving force in the existing winding, which is transformed into voltage. This potential is enough for the formation of a spark.

Differences in different models of chainsaws may only be whether a contact or non-contact magneto is used. In the first case, one terminal of the winding goes to the candle, and the second goes first to the shutdown button, and then through it to the ground. In the second case, the device has a capacitor, which, when discharged, forms a current.

The device and principle of operation of the chainsaw ignition system

The standard ignition system for a carburetor engine consists of:

  • magneto;
  • spark plug;
  • an electrical cable connecting them to each other;
  • engine shutdown keys.

Ignition scheme of the Ural chainsaw

Magneto is a type of alternator that supplies electricity to spark plugs. It consists of a stationary winding of an inductor and a permanent magnet attached to a flywheel that rotates with the crankshaft of a gasoline engine. The moving magnetic field creates an electromotive force in the low-voltage winding, which is converted by the transformer into a voltage with a potential sufficient to generate a spark.

For contact magnets, the first terminal of the high-voltage winding is connected to the spark plug, and the second through a mechanical switch to ground. At a certain moment, a special structural element divides the contacts, which leads to a sharp increase in the voltage in the network and a spark slip in the interelectrode space of the candle.

How to Replace an Ignition Coil on a Small Engine

To prevent overheating and oxidation of the breaker contacts, a capacitor is connected to the electrical circuit.

The ignition circuit of a chainsaw with a contactless magneto is based on the operation of a control coil, which plays the role of a voltage supply regulator. The electronic unit also includes a diode, a capacitor and a thyristor, which transmits a current with a voltage of a certain magnitude. When it is opened, the capacitor is intensively discharged, forming a current in the turns of the primary winding, which is inducted into a high voltage, giving a breakdown on the spark plug installed in the cylinder. The electrical network operates in a pulsed mode in time with the rotation of the crankshaft and the translational movement of the cylinders.

Additional recommendations

If you purchased the Partner-350 saw, the carburetor adjustment can be carried out during operation. Before carrying out these works, you must remember that the factory settings are optimal. Using the screws described above, you can adjust the operation of the motor in special situations, among them different climatic conditions can be distinguished. It is necessary to use screws under the letters L and H when adjusting. To increase the speed, turn them clockwise.

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The need for adjustment

Adjustment of the carburetor of the Partner-350 chainsaw is required in the rarest cases, more often obstacles appear, expressed in the wrong flow of fuel or engine wear. But there are signs that the mechanism needs to be adjusted, here are some of them. After I managed to start the engine, it immediately stalls. In some cases, users cannot start it at all, and the reason lies in a lack of fuel or an excess of oxygen. A discrepancy may appear in the event of an increase in fuel consumption, which results in an increase in the volume of exhaust gases. This can happen due to oversaturation of the consistency with fuel.

Ignition adjustment

People who have a Partner-350 have seen that ignition adjustments are performed quite frequently. At the first start, an idle run must be checked for its implementation, it is necessary to turn the screw, which is responsible for adjusting the idle speed, clockwise. Once it has cooled down, it should be turned counterclockwise 4.5 turns. If, after the specified manipulations, the engine runs without rotating the chain, everything is in order. Otherwise, you need to contact a service center, as working with such a saw can be dangerous.

Operating principle

If you purchased a Partner-350 saw, carburetor adjustment may be required during operation. To perform these steps correctly, you must also familiarize yourself with the principle of operation of this piece of equipment. The fuel is atomized in the diffuser by a stream of air, which creates a mixture that is pumped into the cylinder. The more fuel is supplied, the higher the engine speed will be. In the described model, as in any other, the carburetor operates in accordance with the same scheme described above.

Chainsaw Partner 350. malfunctions and their elimination

Breakdown of Partner garden tools can occur for a variety of reasons, the most common of which are improper use and mechanical shock. To eliminate the malfunction, you will need to determine its exact cause in advance. After that, you can begin to repair the tool yourself.

The procedure for checking and adjusting the correct operation of the engine

The most vulnerable element of a carburetor engine is the spark plug. It also allows you to judge the probable causes of malfunction of individual units of a gasoline engine. The following procedure is recommended.

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    Dismantle the spark plug and inspect it. A dry candle with a slight brown tint of the electrodes can be considered serviceable.

Spark plug carbon deposits

Chainsaw ignition coil

When installing a new electrical module on the engine, the magneto gap must be adjusted. The optimal distance between the flywheel and the ignition coil is 0.2-0.4 mm for most chainsaws.

Clearance between magneto and flywheel

To be sure, it is recommended to carefully study the documentation for the purchased model and follow the manufacturer’s requirements.

With such a small gap, it will not be possible to use an available measuring tool for direct measurement. In practice, a Husqvarna saw uses a template in the form of a spacer cut from thin, flexible sheet material of the required thickness. It is clamped in the space between the flywheel and the coil when it is installed, and then pulled out.

In order not to have to resort to adjusting the ignition, operate the tool carefully, avoiding knocks. In particular, this applies to chainsaws with electronic chips in the ignition system, since they are very sensitive to mechanical damage.

Diagnosis of malfunction with a multimeter

Determine the malfunction of the ignition coil using the so-called hardware method. However, for this you must have a multimeter with which diagnostics are carried out.

How to adjust the ignition on a Partner chainsaw

The need for adjustment

To understand how the Partnerа-350 chain saw is adjusted, it is best to learn about the structure of this unit in the first step. If you understand the principle of operation and the components, you can independently determine the cause of the failure. The carburetor acts as one of the main parts of the engine, which is necessary for preparation and. the latter consists of fuel and oxygen. If the ratio of these ingredients is broken, then the engine may start to malfunction and then it will fail.