Advice 1: How to adjust the carburetors for motorcycle

Carburetors installed on a two stroke, motochika, have much in common in the job settings. Before adjusting carburetor, check the condition of air filter, exhaust system, hoses and clamps systems intake and exhaust, the shape of the carb, the availability and condition of the nozzles, needles, valves. The engine warm up to operating temperature.
How to adjust the carburetors for motorcycle
Instruction
1
Adjust the fuel level in the float chamber. To do this, adjust the height of the float, according to the instructions. The installation accuracy of the fuel level will seriously affect the further adjustment of the carb, be careful. Configuring the operation of the carb with the throttle closed (idle speed adjustment) take not less carefully, because they depend on future adjustment. This is due to the fact that system idle is running at any throttle position.
2
Idle adjust with the needle valve idle screw screw quality and quantity of the fuel mixture. The jet is idling look at the carb body; and can be accessible when it is removed the float chamber. The screw is usually made of brass and stands on the outside of the carb on the left wall. The screw amount of the fuel mixture is located above the screw. Turned on and warmed up the engine with a screw install stable idling speed tube and fold back the screw from its zero position. A screw quantity of the fuel mixture adjust the amount of idle.
3
The transitional regime is considered such a mode of operation of the carburetor, the throttle is a value from 0% to 25%. To ensure the safe operation of the engine in transient mode, choose a jet at idle, adjust the idle speed and the size of the cutout in the throttle. The need to change the last parameter is rare. In most cases, to configure transition mode, check the adjustment of the idle speed, fuel level (see section 2) and a shut-off needle valve of the carburetor.
4
On four-stroke motorcycles in the transitional regime included in the operation of the accelerator pump. Most often it is driven by a separate spring. Adjust the accelerator pump by changing the stiffness of the springs and sizing the feed and overflow orifices.
5
Especially the carb settings at partial throttle (25-75%).

Mode when you open the throttle on the value of 25-50%, adjust the clearance between the needle and the walls of the tunnel carb. To do this, change the diameter of the needle (needles vary in diameter of a cylindrical part with a step of 0.01 mm). In operation, when the throttle 50-75% of the spend adjust by changing the position of the carb needles up or down. You can replace the needle at a more acute or more full (according to the profile of the conical part). To access the needle remove the cap from the carb. On most motorcycles the carb will have to be removed.
6
The carb adjustment in full (75-100%) throttle opening swipe by changing the size of the main fuel nozzle. Can be accessible from the outside of the carb when you removed the drain plug of the float chamber. A correct adjustment of the test or at the hearing (with sufficient experience), or by color of the insulator of the spark plug. For this test drive mode "full throttle". After 45 sec. after the full opening of the throttle turn off engine and remove the spark plug on the go (in neutral). The insulator should have a dark brown color. If black insulator color, obecnice fuel mixture. If orange color – enrich the mixture. When red-brown color, completely replace the gas used, because it contains harmful metal-containing antiknock additives.
7
On some motorcycles apply to additional jets, which are used at high speeds and handling of the electromagnetic valve. The quality of the fuel mixture at high rpm adjust, replacing these nozzles.
Useful advice
All systems carb motor work in parallel and constantly depending on throttle position. From this it follows that the error in the adjustment of one of the modes may lead to further errors in setting up the carb. When holding the carb adjustments a detailed description of the specific model and adjusting the table look at the supporting documentation for the motorcycle.

Advice 2 : How to set carburetor for motorcycle

The most common motorcycle carburetors have five basic tools for adjustment. The main adjustments are carried out with their help, additional adjustments are carried out individually, depending on the specific brand of carb.
How to set carburetor for motorcycle
Instruction
1
Find on the body of the carb screw idle mixture. To enrich the fuel mixture a slightly lower idle speed wrap this screw. This screw regulates the work of the carburettor mode throttle opening to¼. On some models of carburetors to enrich the mixture need to Unscrew this screw. Resistant the idle screw can also find on the carb body. It limits the lowering of the spool of the throttle. Tighten the screw to lift the valve core of the throttle and increase engine speed.
2
Adjust the quality of the fuel mixture through the dispensing needle, which can be attached in different positions spring loaded. Adjustments submitted via this needle, affect carburetor operation mode ¾ to full speed. For the enrichment of the fuel mixture install the spring latch in the lower groove. For the lean, move the clip to the top. On some models of carburetors latch is adjustable in 8 different positions. In addition, the needle can be mounted without a latch.
3
The quality of the fuel mixture for the operation of the carburetor in the full stroke, adjust the selection of the main nozzle with the sprayer. The selection of this nozzle will also affect the operation of the carburetor in all modes. In various carburetors needle valve can be positioned both horizontally and vertically. If there are multiple grooves on the shut-off needle float chamber adjust fuel mixture for all operating modes. To impoverish the mixture, move the needle higher, relative fuel level in the float chamber.
4
On carburetors with missing system idling adjustment of spending by the metering needle, main fuel jet, and the thrust of the idle screw. On the carburetors of old patterns and simplified carburetor adjustment run, varying the gap under the throttle valve with fitting-emphasis.
5
Before adjusting the carburetor, run the engine. Start with the IAC. On the cover of the mixing chamber screw the thrust screw until the end. Candle install clean and reliable. The four-stroke engine set later than the ignition. Start the engine and close the hand valve of the throttle. If the engine stalls, start to slowly Unscrew the stop screw the idle speed up until the engine will not be operating steadily with the throttle closed.
6
Then screw the quality (composition) of the fuel mixture will put the maximum engine speed. Then screw the idle speed decrease idle speed until the appearance of signs of unstable operation of the engine. Thus, adjust the carburetor, alternately increasing the revs by a lean condition and reducing the rpm by reducing the size of the gap under the throttle. Upon reaching stable operation of the engine idling at minimum speed, loosen the adjusting screw of quality of a mix in ¼ turn and lock it, preventing displacement of the set position. Note: if the carb is worn, qualitative adjustment of idling to achieve not to turn out.
7
When you adjust the carb on the secondary modes keep in mind that when moving the dispensing needle up will increase the throttle response of the motorcycle and increase fuel consumption. If throttle response and fuel consumption is satisfactory, do not move the metering needle. If the spark plug is clogged with soot, will obecnice fuel mixture, lowering the metering needle one or two grooves. To eliminate detonation and reverse flashes in the carb, raise the needle 1-2 positions.
8
If full-stroke engine does not develop full power, test the operation of the carburetor with a different size main fuel jet. To increase the power of the engine should be set to jet with a capacity 10-20% higher.

Advice 3 : How to adjust carburetor chainsaw "Ural"

Optimum operation of the chainsaw is impossible without adjustment of its carburetor, consisting in the selection of the characteristics of the fuel mixture for different operating modes. General rules for the settings of this device are the same for different brands of chainsaws, but adjusting the carb saw "Ural" has some peculiarities.
How to adjust carburetor chainsaw "Ural"
You will need
  • - technical passport of the chainsaw;
  • - screwdriver;
  • - a set of wrenches.
Instruction
1
Read the rules of operation of chainsawslisted in the technical manual. Before you start self-adjustment the carburetor on a new saw, remember, what are the factory settings. It is not recommended to make changes to the carb, until the engine and spend a few hours with the settings exposed by the manufacturer.
2
Start the adjustment at idle. Start the engine and let it run at low speed. Using the adjusting screw at the carburetor until the engine has gained momentum steadily, and the chain was not moved on the bus.
3
Go to medium speed. If the engine begins to smoke, partially tighten the screw, which will make the mixture poorer. Smoke after depletion of the mixture must cease and the engine speed will increase. Make with a sharp press on the throttle lever the engine picked up speed quickly and smoothly.
4
Check the engine response of a saw. Set the minimum rpm, which would need to Unscrew the adjustment screw. Now sharply push the lever to the end and soak it in this position for at least three seconds. If the engine stalls or is too slow increase the speed, gradually remove the screw. Selecting the optimum mode of operation to securely fix the adjusting screw lock nut.
5
For newly purchased saw, not tuned for maximum power and not the last run-in, also adjust the carb, consistently changing the position of the screw carb. Remember that by unscrewing the mixture screw is enriched, and in case of partial screwing it becomes poorer.
6
A final adjustment of the carburetor are produced after three or four hours of chainsaw in a real work environment, that is, when sawing wood.

Advice 4 : As the motorcycle "Ural" to put a single carb

Cylinders to move simultaneously, owners of heavy motorcycles constantly have to adjust the carbs. But the solution to this situation is to install a powerful one carb instead of two. To perform this operation in a home garage, i.e. the garage.
As the motorcycle "Ural" to put a single carb
You will need
  • metal chetyrehkilometrovoy plate;
  • - nut;
  • - metal strips;
  • - rubber hose;
  • - spring;
  • - carb;
  • - tool kit.
Instruction
1
Of the metal plate make an exact copy of the bottom of the carb. Then cut the threads, screw it on the nut, and then weld those nuts to the plate. At the ends of the elliptical plate make a hole in which the insert metal strips (thickness of each – one mm), and weld them.
2
After welding make sure to align the plane, where it will be screwed to the carburetor. Then try the carb. After that metal box saw through the groove (it is designed to lever accelerator pump).
3
The pipes leave the home. For heads you need to cut the washer with holes in which to insert the bent tube a rectangle and all items are carefully weld.
4
To ensure a smooth transition from large diameter (normal pipe) to the smaller (diameter of head), use a rubber hose, secure it with clamps. Box connect with gear box, fixing it with three screws MB. The caps of these screws should be securely, preventing eversion of the metal plate.
5
Run the upgrade carb: namely, replace the part to which attached was a cable leak (install in its place the wider part). Then tighten up the bolt, which is attached to the sector by drilling in the axis of the hole. On the same pin, put the spring and the bushing and the washer.
6
The air filter housing soldered using conventional solder. Slightly shorten the studs the carb and then screw the pot with the nipples from the spokes of the motorcycle "Ural". On the housing, solder the four l-shaped plates (they will be wearing a filter).
7
To all the improved design got into its designated place neatly sawed the bottom of the frame tube. Then assemble the carburetor.
Note
Verify the quality of welding of the parts installed on the motorcycle "Ural".
Useful advice
If you are confident in your abilities, please seek professional help at the car wash.

Advice 5 : 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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