Husqvarna 343 Trimmer Carb Adjustment
Adjusting the carburetor of the lawn mowers is a process that must be mastered for the trimmer to work properly. The trimmer is a completely simple device that can break down only in a few places and require mechanical repair or replacement of the part. Adjusting the carburetor device for a float-type lawn mower may require knowledge of certain subtleties. The nuances caused by the model and the specifics of its functioning will ensure a clear mode of mixing and supplying the fuel mixture.
What is the problem of trimmer malfunction
Champion lawnmower carburetor how to adjust? This is just a float type trimmer. A common option, designed to mix air and fuel in the prescribed proportions. The main problems that arise during the operation of the engine are approximately similar to the problems that overtake the carburetor in the car:
- The motor may stall immediately after it has been started. The reason is that gasoline is not supplied enough. This is called “poor” fuel;
- Excessively supplied gasoline leads to incomplete combustion, excessive mixture density and uneconomical consumption.
Important! It is necessary to regulate the carburetor under different circumstances: changes in temperature, octane number of fuel or type of oil, after winter or at the end of the break-in period, load or spontaneous cranking of screws from strong vibration of the case. Some owners prefer to configure the module before each use to make sure that it works correctly.
The float carburetor consists of an aluminum body with a hole (diffuser). Air is injected through its passage opening, and gasoline is drawn in through the fuel channels along with the air stream. This is the basis of the device. The fuel chamber. Mounted on top of the nozzles, pump and adjustment system of the mixture provide not only its saturation, but also a uniform flow.
For your information! A float carburetor has been used for decades, and the main problems are similar for all types. The principle of operation of the device depends on the quality of the mixture, and the adjustment is aimed at ensuring it.
Principle of operation
The air flow entering the tube with a throttle is amplified or weakened depending on its position. From the fuel chamber, gas enters a special pipe through the nozzle. Float. A device that regulates the supply of fuel, its level determines the volume. Gasoline supplied through the nozzle is mixed with air under the influence of a pressure difference. This produces an air-fuel mixture for engine operation.
Note! Improper fuel composition is due to a lack of gasoline or air. This means that you need to adjust the throttle or the position of the float. The motor may also stall due to the jet, but this is already a more serious failure.
How to adjust the trimmer on the lawn mower
Most modules have adjustment screws, and the scheme usually helps to understand their functionality:
- L. For fuel supply of a low-speed mode;
- H. Fuel supply at high speeds and its consumption;
- T. Idle debugging.
Adjusting the lawn mowers, whose production is Chinese, can cause difficulties due to the presence of only one screw, which is responsible for idling.
Important! The answer to the question of how to adjust the Champion lawnmower carburetor is better to look at the where the professional does it.
Carb Adjustment on a Patriot Trimmer
After proper adjustment, the engine should increase speed, and when idling, the cutting tool will not turn. Everything is easy and simple!