You can’t do without improvised tools in the countryside or in the conditions of a private farmstead. Even with the banal logging for a stove or fireplace, you need a saw and an ax, but when creating farm buildings, a unit more powerful, for example, a chainsaw, is needed. Masters choose it much more often than electric models, because it is easier to use such equipment due to the lack of connection to a power outlet.
Gasoline devices vary in weight, configuration and cost, therefore, visiting the store, you may encounter the difficulty of choosing a particular model. Among the other market offers, the Shtil chainsaw should be highlighted, the carburetor of which should be adjusted during operation. You can learn about this and much more from the article.
Tool preparation
Before starting the adjustment, you should take care of the availability of tools. To carry out the work yourself you may need:
- screwdriver for screws;
- electronic tachometer;
- crosshead screwdriver;
- compressor with a gun.
The first screwdriver is needed to adjust the main screws. It can be purchased at a specialty store. When adjusting the carburetor of the "Calm" chainsaw, you can use the electronic tachometer. It allows you to determine the frequency of rotation of the crankshaft. If you have the relevant experience, then you can carry out the adjustment by ear.
More about preparation
You will need a Phillips screwdriver to adjust the T screw. To clean the saw, first of all, use a compressor. You cannot use a conventional slotted screwdriver, as the screws may have different cross-sections. You should buy a special screwdriver or entrust the matter to specialists.
Professional Tips
Before adjusting the "Shtil" chainsaw carburetor, you need to inspect the spark plugs. By their condition and color, you can determine the need for surgery. If they are black, then this indicates re-enrichment. With a brick gray color, you can be sure that everything is normal. If there is a white coating on the electrode electrodes, the mixture is lean.
It is the top screw that plays a major role in adjusting the carburetor. It is located next to the silencer. If you follow the factory settings that can be found on the housing cover, it should be unscrewed one turn. Then it is adjusted. By unscrewing the screw, you make the working mixture more enriched, while more gasoline enters it. If the screw is screwed in, the working mixture will be combined, while less gasoline will get into the fuel mixture.
Execution technique
Before you begin to adjust the carburetor of the "Calm" chainsaw, you should carry out maintenance. It provides for cleaning the engine, as well as the carburetor. The candles should be replaced, check the chain tension and work on cleaning the air filter. The motor must be warmed up and the idle speed must be adjusted.
When adjusting the carburetor of the Calm chainsaw, the screws H and L should be tightened fully. The equipment must be drowned out. Both screws are then twisted one turn. Then the device starts up and warms up. You must give full throttle, and after the first screw to achieve the maximum speed of 14,000 per minute. You can check this value by tachometer. This is the engine speed counter.
When adjusting the "Shtil 180" chainsaw carburetor with your own hands, you should not withstand the maximum speed for more than 10 seconds. To stop the idle stop with the LA screw, it is necessary to ensure that the chain starts to move. This screw then turns a quarter of a turn counterclockwise. After that, you may notice that idle speed is not stable.
A chainsaw can accelerate poorly. This indicates that screw L must be turned counterclockwise. At the same time, the equipment will gain momentum in a short time and, accordingly, will work well at idle. After that, the LA bolt needs to be adjusted, and the idle speed should be 2800 per minute.
Additional recommendations
The carburetor adjustment for the "Calm 250" chainsaw is carried out according to the same principle. However, the manipulation will not work if there is air leakage into the engine through the gasket. Air passes through the accelerator pump and crankshaft oil seals.
When is the adjustment for the Calm 250 chainsaw necessary?
Adjustment may be required when a change in fuel quality occurs. It is also important to consider operating conditions, for example, how rarefied air is, as well as whether the pressure changes. Humidity and air temperature can affect the need for adjustment.
By performing such manipulations, you can achieve higher performance, even if environmental conditions deteriorate. By doing your own adjustment of the carburetor chainsaw "Calm 250", you can prevent oil starvation. Failing to do this, you may encounter engine damage resulting in insufficient lubrication. It enters the cylinder from the lean mixture.
Carburettor adjustment on models 362 and 660
In order to adjust the carburetor in the mentioned models, you will need to use only one screw, which is responsible for idling. Twist it counterclockwise. He must go tight. After that it is necessary to make 2 turns clockwise. On this we can assume that the adjustment of the carburetor chainsaw "Calm 660" is completed.
If the idle speed is very low, turn the screw clockwise. The chain will begin to move. Then the screw rotates 1/2 turn counterclockwise. Adjustment of the carburetor of the Shtil 362 chainsaw may be required at high idle speeds. In this case, the screw must be turned in the opposite direction. It is important to take into account that it is necessary to do this until the moment when the chain stops, until it starts to go tight. Then the screw must be turned again counterclockwise 1/2 turn.
Technical characteristics of some models of "Calm" chainsaws
Among the manufacturer’s other offers in the range of chainsaws is the model 180 14 ", which is a household device. The tool has a tire with a length of 35 cm. The power of the equipment is 2 hp or 1.5 kW. The fuel tank will fit 0. 25 L. The idle speed in this case is 2800 per minute.
Adjustment of the carburetor of the Shtil MS chainsaw is carried out according to the above scheme using 2 screws. For successful operation, this is not all you need to know. Among other things, you need to ask about the number of links, which is equal to 50. In the oil tank you can fill 0.15 liters.
Another rather popular model that was described above is the MS 180. The equipment belongs to the household class. Its power is 2 liters. sec., which is equal to 1.5 kW. The device weighs 4.2 kg. The idle speed is 2800 per minute.
You cannot work with one hand using this tool. The chain rotates at a maximum speed of 22.3 m / s. The tire length of the model is 14 inches. The groove width is 1.3 mm.
Another quite popular model among consumers is the MS 660. This is a professional saw with a capacity of 7.1 liters. from. The engine capacity here is 91.6 cm 3 , while the tire length is 50 cm. The volume of the oil tank is 0.36 liters. The chain rotates at a maximum speed of 27.50 m / s. This model does not have an easy start. Idle speed is 2500 per minute. This equipment weighs 7.3 kg. To work with such a device, if you do not have the appropriate skill, is quite difficult.
Features and specifications of the model MS 362
This equipment option is a professional-grade chainsaw with a security system and a high-power, economical engine. Sawing performance is exceptional here. The device has an easy-start system and an electronic system that provides start-up without jerks.
Fuel and oil tanks have openable tool-free lids for easy refueling. You can use the combination lever to turn the tool on and off. The tire length in this case is 40 cm. The power of the device is 3.5 kW or 4.8 liters. from. Chain pitch - 3/8 inch. The noise level during operation of the chainsaw is 106 decibels. The idle speed is 2800 minutes. The device weighs 5.8 kg.
The fuel tank holds 0.6 liters. Among the additional features should be highlighted:
- increased efficiency;
- easy start;
- single lever operation;
- the presence of a compensator;
- anti-vibration system;
- reduced oil consumption;
- lossless nuts;
- safe work;
- quick refueling;
- high power.
As for the increased efficiency, four-channel technology is responsible for this feature. The working mixture swirls in the bypass channels, which helps to reduce the fuel consumed, while the engine efficiency increases. One cannot but mention the system that automatically measures the amount of fuel, recognizes hot and cold start, and also facilitates the starting of the motor.
Finally
From the factory, a chainsaw usually comes with an adjusted carburetor, but over time you can do these manipulations yourself. First you need to start the engine, the saw should warm up for several minutes. Then you should start turning the screws at which the engine will develop maximum speed.
Then the screw comes back. At the next stage, you need to do power adjustment at maximum speeds. To do this, use a tachometer. After the adjustment is completed, you should make sure that the chainsaw easily picks up and slows down, and works stably at high and low speeds.