Advice 1: How to adjust the carburetor on UAZ

Carburetor K-151, widely used on the vehicles are quite reliable and requires minimal maintenance associated with flushing, cleaning and adjustment. During the process of adjustments of the device remember that the wrong actions can cause faulty K-151. Carb adjusting is performed without removing it from the engine.
How to adjust the carburetor on UAZ
You will need
  • - set coupling ring and flat spanners;
  • - rubber bulb;
  • - caliper;
  • - pliers;
  • - screwdriver;
Instruction
1
To adjust the float mechanism remove the cover of the carb. Rubber blower to remove about 25% of the float chamber fuel. Then install the crankshaft of the motor to a position not interfering with the fuel pump and start manually to pump up gasoline, watching the increase in its level in the chamber. Stop pumping at the moment when this level stabiliziruemost. Measure the depth of the float chamber caliper. It needs to be 21.5 mm (ideally) or 19-23 mm (non-critical). To increase the fuel level with a screwdriver pry up the tab of the float. To reduce fuel fold it down, holding the float with the other hand. After bending of the reed, re-check the fuel level in the float chamber. Adjustment combine with the regular cleaning and flushing of the carburettor.
2
To adjust performance of the accelerator pump, remove the carburetor from the engine. Fill it with fuel and set the funnel over a beaker. Fully open the throttle and hold of the open for 3-5 seconds, then close for 1-2 seconds. This operation repeat 10 times in a row. The volume collected in the beaker of the fuel should be close to the guidelines specified in the Datasheet of the carburetor. Performance accelerator pump adjust rotate the adjustment needle on a drainage channel. To reduce performance turn it to increase – wrap.
3
Adjustment of starting system do without removing the carb from the engine. To do this, slightly open the throttle, turn until it stops and fix it with wire or rubber band the lever control trigger system. Release the throttle and measure the clearance between its edge and the wall of the mixing chamber. It needs to be 1,5-1,8 mm. If necessary, adjust the gap by loosening the locknut and turning the screw-emphasis flat screw on the throttle lever. Change its position each time not less than a half turn. When final tightening the locking nut, the plane of the screw head should be perpendicular to the plane of the Cam.
4
Measure the clearance between the levers on the axis of the air valve. When rotated to lock the lever trigger system and a fully air flap is open it must be 0,2-0,8 mm. the carbs of the old editions, adjust the gap by rotating the threaded head of the control rod of the launcher system. On a more modern carburetors, adjust the clearance by turning the screw of fastening of pads on the Cam trigger device and moving it up or down, followed by tightening of the screw.
5
Adjust the gap on the lower edge of the air vent in the presence of vacuum in the cavity of the diaphragm mechanism and when fully vtyanuta stock starter. For this fixing method described above, the control lever starter system, press the top l-shaped rod of the diaphragm, simulating a vacuum. The gap between the edge of the air deflector and the wall of the air cap should be 5-7 mm. For its correction remove the screw that secures the half duplicera lever of the starting device in the top cover of the carb. Changing lever to the choke position, tighten the screw and recheck the gap.
6
Remove the air filter, start the engine and warm it up to normal operating temperature. Slightly pushing the gas pedal fully pull on the lever of choke control. With a screwdriver open the choke up all the way and make sure the engine is running at rpm 2500-2700 rpm to adjust the speed loosen the lock nut on the adjustment screw is a stop for the throttle lever primary camera. To increase the frequency of rotation of the crankshaft turn the screw to lower – wrap. After completing the adjustment, tighten the lock nut. In addition, this adjustment can be performed without the rotation of the adjusting screw-lock. To do this, gently bend the throttle lever suitable pliers.

Advice 2: How to adjust a carburetor on a scooter

In recent years, a trend distribute scooters among adolescents. If they had been a novelty, now it is probably every schoolchild. Scooter has a lot of advantages and almost no disadvantages. First, it is quite easy to manage. Second, it is not as big as a motorcycle. Thirdly, and perhaps most importantly, the scooter does not need rights because it is considered as a bike with an outboard motor from the point of view of traffic rules. But, like any technology, scooter or its components can come in fault. The carburetor is one of the most important parts of any vehicle (with motor of course). How to adjust to make it work longer?
How to adjust a carburetor on a scooter
Instruction
1
Before adjusting the carband you should first warm up the engine, because the sense of adjustment when the engine is cold there will be no. Also recommended before setting replace the spark plug and flush all channels of the carb.
2
Preparations for the work you have done, now starts the actual adjustment.
The first thing you have to adjust the idle screw so the engine kept revving and gloh. In the case where no idle or when they are too low or high tightening or unscrewing of screw to reduce or increase the speed, achieving values of 1800 plus or minus 100 revolutions per minute.
3
You should then fully tighten screw fuel mixture. As a result, the engine should stall. If it does not, check tightness of the system supply air from the air filter.
4
The next thing you do is turn the fuel mixture screw one turn.
5
The next step that you should do is start the engine and adjusting the idle screw to achieve the values of the engine speed around 2500 per minute.
6
Then you should slowly remove the screw of the fuel mixture, achieving maximum engine rpm. But don't twist the screw too much. Two full turns will be sufficient, but no more.
7
After that, you need to re-adjust the idle screw, achieving values of engine speed of about 1800 (plus or minus one hundred revolutions per minute.
8
The final step. Turn the throttle several times and check if the engine steadily holds the number of the idle speed. If everything is in order, the carburetor on your moped is properly configured and you can safely go without fear that it is on the way happens to be any problems.
Note
The device and adjusting the carburetor of a scooter. The carb looks complicated device, but a little theory and You will be able to cope with configuration. The first thing you need to know is at least the basics of the principle of operation of the carburetor and the main controls and adjustments. With the basics and get started. Consider the principle of operation of the carburetor in the example of figure 1
Useful advice
The device of the carburetor of a scooter setup. The CARB. The main part of the carb Venturi. If we are talking about the diffuser 19mm and more, it is not recommended to adjust the carburetor, not having sufficient experience. Not zabyvay also that the operation of the carburetor of scooter impact are not dependent on You factors: fuel quality, atmospheric pressure, air temperature.

Advice 3: How to adjust the carb on the "Ural"

If the motorcycle engine called his heart, the carburetor can be rightly called the heart valves. His correct and timely configuration depends not only fuel consumption, but also performance techniques.
How to adjust the carb on the "Ural"
You will need
  • - wooden tube
  • - drill
Instruction
1
Adjust the position of the floats. To do this, remove the carb and flip it over after disconnecting the bottom of the float chamber. If the floats do not lie in the same plane, bend the base of one of them so that the difference between them does not exceed 0,5 mm.
2
Install fuel level, bending the float Tang so that the distance from its outermost edge was 26 mm. Note that this figure is applicable for flat terrain, where the height above sea level not over 1000 m In altitude above this level twice, the benchmark is 28 mm.
3
Adjust the starter. Set the needle to the lowest position. Check out how easy moving the lever on the steering wheel. If necessary, disassemble, lubricate and reassemble it. Install the carburetor in place.
4
Before adjusting the idle speed warm up the engine to operating temperature. Raise the throttle stop screw to increase the engine speed. The screw of the "quality" of the mix to the end, without effort, and then Unscrew it one and a half turns.
5
Along the way, check the ease of movement of the throttle in the slots, check that no excessive backlash in the well. A u-shaped inductor allows by flexion and extension of to some extent to eliminate the backlash.
6
Set the motorcycle on its centre stand, throttle screw gradually lower quantities. Get the frequency of rotation was reduced to the lowest sustainable rate. Then remove the screw "quality" to increase. Again similarly produce a decrease and increase of speed, impoverishing mixture.
7
After you set a minimum speed to drive the screw "quality" on sex trafficking. This will make the engine idle more stable.
8
Within the movement of the throttle from 1/3 to 3/4 (at the turn of the throttle or the lift height) on the engine most affected by the needle position. To determine how true it is selected, after about 25km, stop the bike and remove the spark plug.
9
Note the color of the insulator of the Central electrode. If it is pale gray, raise the metering needle; if it's black, put it. Normal is dark gray or light brown color, indicating that the candle does not overheat.
10
When selected, the needle position, it will be possible to take care of the greater efficiency of the carburetor. You will need to lower the needle one notch.
11
The last stage of adjustment – the correct selection of main fuel jet. Measure the maximum speed prescribed in the standard nozzle. Put into the inlet of the carb tube of wood with drilled canalized. Its diameter should be 20% smaller than the diameter of the inlet. If the rate then considerably decreased, - the performance of the nozzle is large, if diminished performance is small. If a significant speed change has not occurred, the nozzle no need to change.
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