If your chainsaw does not work well: adjust the carburetor for beginners

Chainsaw is indispensable in cases whereit is required to perform work in places severely divorced from civilization. However, in the garden is also much more convenient to use a gasoline tool, rather than drag a dozen or two meters of the extension cable.

Unfortunately, some shortcomings have evenchainsaw. Adjustment of the carburetor for sure will put in a blind alley the man who is not too friendly with the mechanics. To understand this issue, we suggest you read our article.

Basic concepts

On any modern saw, the carburetor has three special screws:

• L - for a low-speed jet.
• H - is intended for adjustment of a jet with high turns.
• T - the screw for "adjustment" of idling.

The location of each of them is specific for differentmanufacturers, so to clarify this issue should be, using the instruction manual. The easiest way to adjust the carburetor chainsaw "Friendship", as the instruction for its maintenance is easy to find.

What are screws for?

As you can see, with the first twodevices is the adjustment of the ratio of air and fuel mixture. If the screw is tightened, a lean mixture will flow into the combustion chamber, and the revolutions will fall. On the contrary, when unscrewing them counterclockwise, the “oily” fuel mixture will burn out, which will increase momentum.

Completely the opposite is done.idle move. If the screw "T" is turned clockwise, the speed will increase. Once again, we remind you that each chainsaw whose carburetor adjustment we are considering has a unique arrangement of setting organs. So carefully watch the instruction manual!

Basic setting

Primary adjustment is carried out onmanufacturing plant. Note that this adjustment provides for a slightly more saturated fuel mixture. It needs to be saved in the first hours when the chainsaw is working. Adjusting the carburetor in the future involves more precise settings.

How to do it?

First, the tool is placed at idle:while the chain rotates on the working bus, you need to tighten the screw "T" counterclockwise. Twist it until the chain stops. Note that it is possible to perform this operation only on a heated tool, and for this you need a rev counter. Thus, the adjustment of the carburetor chainsaw "Huskvarna" should be carried out only by specialists.

Note that first adjust the screw "L", then go to "H", and in the end go to the setting of "T".

Adjust the speed

First you will need to find the mosthigh idle speeds by turning the “L” valve clockwise or in the opposite direction. Once you have found the peak speed, turn the screw 1/4 counterclockwise. If the chain then continues to rotate, then you need to unscrew the screw "T" counterclockwise.

As soon as the engine runs fullturns for at least 10 seconds, you need to unscrew the "H" 1/4 of a turn, moving it counterclockwise. Let the tool run again for at least ten seconds. Be sure to check the maximum speed!

If their number does not match the passport data,adjustment should be repeated. In the case when you asked too poor a mixture, the engine will “scream”. If the “food” is too rich, then there will be greasy smoke from the muffler.

Thus, a modern chainsaw, the adjustment of which carburetor we considered, is a rather complicated tool.