Carburetor K-62: technical characteristics, adjustment, adjustment, scheme, photo

There are many motorcycles, but none of them can work without a carburetor and its correct setting. It is a device for mixing gasoline with air, and depending on the proportion and the number of both, the correct and economical operation of the engine is carried out.

Carburetor device

Our element is designed in such a way that gasoline enters the float chamber, up to a certain level, which is limited by the float. He, rising, closes the passage for fuel with a locking needle.

The fuel then flows through the jet into the mixing chamber, where it mixes with air and enters the cylinder under the action of thrust when the piston is lowered down. The work of the engine depends on the quality of the mixture.

The K-62 carburetor circuit should be known to everyone who is going to work with this device.

An important function is played by jets, they play a major role in the volume of fuel supplied to the engine. It is possible to install different jets on the carburetor K-62. The technical characteristics of this allow for excellent operation on smaller jets with a low fuel consumption.

Depending on the quality of the mixture, we either get a powerful but uneconomical engine, or a motor without a good twisting moment. In the case where there is a strong deviation in one direction or another, the engine can not operate normally.

Troubleshoot problems

If there are any difficulties, for example, the engine does not start up if there is a spark and we are sure that the compression in the engine is sufficient, you can moisten the gasoline with a gasoline or fill the cylinder with a plug through the candle opening and try to start it, it will help clean the carburetor and the clogged jet.

If the engine does not start, you can try to start it by pushing the motorcycle in neutral gear with the ignition off. When the speed has become steady, and the motorcycle has gained sufficient inertia, it is necessary to turn on the ignition, squeeze the clutch, start the shift pedal to the 1st speed position and gently release the left lever on the handlebar.

If the engine starts, but stalls when the throttle is suddenly raised or lowered, it is unstable at idle, then the carburettor should be carefully examined

Inspection of the carburetor

Before removing the engine from the engine such as the carburetor K-62, you should press the button of the float drowner and make sure that the fuel enters the carburetor (gasoline should go out through the hole under the button), and the cause of the poor performance is exactly in the carburetor.

If gasoline slowly enters the float chamber, the cause of the carburettor's poor performance may be a clogged filter in the petrol tank. It is enough to unscrew the sump glass (a cylindrical container with a screw from below), it can be clearly seen on all fuel banks in motorcycles, and clean the filter.

The carburettor K-62 may not work properly due to the untimely pouring of fluid into the oil air filter or its clogging. You should try to start the engine without a filter, if the work gets better, then it should be cleaned and rinsed in kerosene.

Carburetor disassembly

Disassembled carburetor K-62 photos in our article can be considered in detail.

We will need the following tools: a minus screwdriver, keys for 12, 14, a hex head for 6 or pliers. First, unscrew the screws securing the carburettor to the engine with a key 14, then the top cover with a screwdriver. From the throttle, from the groove, the accelerator handle cable and the idling adjustment screw are removed, which has a flat end.

Then unscrew all the bolts, including the mix quality screw, and remove the cap of the float chamber, it is fastened with two screws - one on the left side of the cylinder, there is also a button of the float drowner, a mix quality screw and a fuel supply hose; The other with the opposite.

Turn the carburetor upside down, inspect the float, its end should be several degrees above the start. At the base there must be a tongue, if the float is not right, it should be bent to achieve the desired effect.

Disassembly of jets

First take out the axis of the float, look at the wear, it should be the same along the entire length. We take out the needle with a fixer from the float, it should have a small silicone gasket. Then unscrew the main central jet with the key 12, then the head on 6 or the pliers jets the idler, it is fixed with a lock washer.

The smaller jet is important to twist when assembling with the lock washer, otherwise it will break. The K-62 carburetor is produced without the enrichment, they go on stamps, starting with K-33 and K-38, there it is in the corner and is twisted with a screwdriver.

After twisting the jets from the back side, the central element is removed - the guide flap, which was held by the main jet. For better performance, you can grind the throttle and the central element. If the inspection is not done for an urgent installation on the engine, then it is necessary to lubricate all the components with oil. Reassemble in the reverse order.

Buying a new carburetor

When purchasing a repair kit for the carburetor K-62, it is necessary to pay attention that the holes are without defects, and it is desirable to immediately select or replace jets. Often there is a discrepancy between the directions and the actual sizes of the holes, especially if the jet is made in China.

The carburetor K-62 can work with a jet from the K-55 brand, they are installed on the Voskhod motorcycles, as practice shows, it does not affect the engine, but with careful driving, more economical fuel consumption and less engine overheating are possible .

When installing the carburetor on a new motorcycle may need an adapter, it is even suitable for a machine, you need to muffle an extra hole, it can be clearly seen in the photo below.

But you should take into account the size of the seats in the shop, it is advisable to take the carburetor with you for example, because the standards may differ, and we will have to return back.

Carburetor cleaning

The carburetor K-62 jets look like light, in case of clogging you can clean it with a match, but with non-metallic wire. Rinse with a special solution all the holes and the cap of the float chamber.

There is a special balloon with a thin nozzle, it is best to clean the carburetor. Partial disassembly is made, jets are left, and the mixture provides instant cleaning and purging of all channels.

It is necessary to rinse and clean the top and bottom cover well. Strongly contaminated carburettors can be washed in kerosene, then blow the compressor and the canister to finally clean the element.

Assembling the carburetor

On top of the needle, the latch is set to the middle position, if economical work is needed - in the lower position. The engine will be bad to start, but will become more economical. Throttle заслонку we insert a cut-out to the air filter. It should move easily and freely along the guide flap.

After preliminary adjustment of the position of all elements, selection of the jet, cleaning of all channels, it is necessary to screw the carburettor to the engine with a key for 14, attach the hose, cable (from the throttle stick) to the throttle, tighten the quality screw of the mixture, near the gasoline hose, to the stop, and unscrew it by 2 -3 revolution.

Tighten the screw of the mixture quantity to maximum, it is supported by the flap when lifting, it needs to be inserted into the groove, next to the throttle stick cable. Also there is an adjustment by the concentrator, it can either be fixed to the carburetor, or a cable from it to go to the handlebar. The enricher is a needle that opens an additional channel with fuel.

Starting the engine after installing the carburetor

It is necessary to open the enrichment device by about 1 cm, press the button of the float drowner, the gasoline should seep a little through the hole, then turn on the ignition, the bulb should brightly burn, and add a little gas, press the kick starter several times.

If the engine starts lazily and immediately stalls, the reason is either as a gasoline or in a weak charge of the battery. In the event that the engine does not start at all, you should inspect the main wires and a spark plug, it could be filled with fuel surplus, it should be unscrewed and wiped.

To check the candle, you need to attach it to the cylinder, turn on the ignition and press the kick starter, the spark must be strong and slip with the same force at the exact time.

Engine tuning

How to adjust the carburetor K-62 for normal operation? First, after starting the engine, we spin the enrichment device. Further adjustment of the carburetor K-62 occurs with the help of two screws - the quality and quantity of the mixture. Gently gradually tighten the quality screw every time for a quarter turn, to the minimum stable engine performance.

After that, repeat the same procedure with the quantity screw, gently untwist it until the engine starts to gain momentum, and then turn the screws in turn to the lowest steady speed. Correct adjustment of the carburetor K-62 takes place not according to the instructions, but on the engine operation.

Factory settings and recommendations say that the quality screw should be twisted exactly one and a half turns, this in practice is not always met, because the engines have different wear and compression, which can not affect the carburetor, so you need to adjust the minimum stable speed Engine.

Adjustment of carburetor K-62 occurs on a well warmed-up engine. It is important to drive a certain distance on the motorbike so that the engine warms up well with the carburettor and the entire system. Then we reduce the gas to idle and begin to re-adjust the same scheme. This will ensure an excellent engine tuning, minimum fuel consumption with good traction.

How to adjust the carburetor K-62?

It is especially important to warm up the motor on the go when installing new parts on the carburetor, or for accurate and final adjustment. If you do not adjust the carburetor on a well warmed-up engine, it will not work properly.

The motor will not give enough power when the throttle is suddenly raised, or the gasoline consumption is too high and the engine overheats. This is possible, even if the setting is correct, but on a poorly warmed-up engine.

Then you should try to feel the crankcase under the cylinder, it should be warm, but not hot. Some try a cylinder, it's a mistake, you can determine the normal warm-up of all internal parts, just by trying the carter to the touch.

After sufficient warm-up, repeat the adjustment of the screws, the revolutions must be minimally stable, otherwise the engine will overheat, and it should not arbitrarily stop after a while.

The carburetor K-62, despite some negative reviews, quite well proved itself in practice. Its unpretentiousness, reliability and simplicity in operation have subdued hearts of many owners of motorcycles. It is quite competitive in comparison with many foreign analogs and more modern models.