Which carburetor is better at sunrise 3m

The first production Voskhod motorcycle was equipped with a K-36B type carburetor, which had two metering systems - main and idle, as well as an enrichment device.

To rinse and clean it is necessary to disassemble in the following order: 1 - close the gasoline tap and disconnect the gasoline hose; 2 — unfasten the latches and remove the housing cover along with the cables, spool and fuel corrector; 3 - remove the rubber coupling; 4 — unscrew the two fastening nuts and remove the carburetor; 5 — remove the sealing gaskets; 6 - perform a complete disassembly.

Wash the removed parts with clean gasoline, inspect and reassemble in the reverse order. The factory settings ensure maximum and optimal engine efficiency.

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Carburetor K-62: technical characteristics, adjustment, setup, diagram, photo

There are many motorcycles, but none of them can work without a carburetor and its correct settings. It is a device for mixing gasoline with air, and depending on the proportion and quantity of both, the engine operates correctly and economically.

Carburetor design

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. As it rises, it closes the fuel passage with a shut-off needle.

Then the fuel enters through the nozzle into the mixing chamber, where it is mixed with air and enters the cylinder under the action of thrust, when the piston moves down. Engine performance depends on the quality of the mixture.

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

Jets play an important function; they play a major role in the volume of fuel supplied to the engine. It is possible to install different jets on the K-62 carburetor. Its technical characteristics allow it to work perfectly on smaller jets with low fuel consumption.

Depending on the quality of the mixture, we either get a powerful but uneconomical engine, or an engine without good torque. If there is a strong deviation in one direction or another, the engine cannot operate normally.

Troubleshooting

If difficulties arise, for example, the engine does not start when there is a spark and we are sure that the compression in the engine is sufficient, you can moisten the spark plug with gasoline or fill the cylinder with fuel through the spark plug hole and try to start it, this will help clear the passages in the carburetor and the clogged nozzle.

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

If the engine starts, but stalls when the throttle is raised or lowered sharply, or idles unstably, then the carburetor should be carefully inspected

Carburetor Inspection

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

If gasoline flows slowly into the float chamber, then the cause of poor carburetor performance may be a clogged filter in the gas tap. It is enough to unscrew the sump cup (a cylindrical container with a screw at the bottom), it is clearly visible on all gas taps on motorcycles, and clean the filter.

The K-62 carburetor may not work well due to untimely addition of fluid to the oil air filter or its clogging. You should try to start the engine without a filter; if the performance improves, then it should be cleaned and rinsed in kerosene.

Disassembling the carburetor

The disassembled K-62 carburetor photos in our article allow you to examine it in detail.

We will need the following tools: a minus screwdriver, 12, 14 keys, a 6 hex head or pliers. You should first unscrew the screws securing the carburetor to the engine with a 14mm wrench, then the top cover with a screwdriver. From the throttle valve, from the groove, remove the accelerator handle cable and the idle speed adjustment screw, which has a flat end.

Then we unscrew all the bolts, including the mixture quality screw, and remove the float chamber cover, it is secured with two screws - one on the left side of the cylinder, there is also a float release button, a mixture quality screw and a fuel supply hose; the other - from the opposite.

Turn the carburetor upside down, inspect the float, its end should be several degrees higher than the beginning. There should be a tongue at the base; if the float is positioned incorrectly, you should bend it to achieve the desired effect.

Disassembling jets

First, we take out the float axis, look at the wear, it should be the same along the entire length. We remove the needle with the lock from the float; there should be a small silicone gasket on it. Then we unscrew the main central jet with a 12mm wrench, after which we unscrew the idle jet with a 6mm wrench or use pliers and secure it with a lock washer.

It is important to tighten the smaller jet when assembling it with the lock washer, otherwise it will break. The K-62 carburetor is produced without an enricher; they come in brands starting from K-33 and up to K-38, where it is located in the corner and is unscrewed with a screwdriver.

After unscrewing the jets, the central element is removed from the reverse side - the guide valve, which was held in place by the main jet. For better performance, you can sand the throttle body and center piece. If the inspection is not carried out for urgent installation on the engine, then all components need to be lubricated with oil. Assembly is carried out in reverse order.

Buying a new carburetor

When purchasing a repair kit for the K-62 carburetor, you should pay attention that the holes are free of defects, and it is advisable to immediately select or replace the jets. There is often a discrepancy between the instructions and the actual dimensions of the holes, especially if the jet is made in China.

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

When installing a carburetor on new motorcycles, you may need an adapter; even a machine one will do; you need to plug the extra hole, it can be clearly seen in the photo below.

But you should take into account the dimensions of the seats in the store; it is advisable to take the carburetor with you as an example, because the standards may differ, and we will have to go back.

Carburetor flushing

The K-62 carburetor jets can be seen in the light; if clogged, you can clean them with a match, but with a non-metallic wire. You need to wash all the holes and the float chamber cover with a special solution.

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

You need to rinse and wipe the top and bottom covers well. Heavily contaminated carburetors can be washed in kerosene, then purged with a compressor and a spray can to finally clean the element.

Carburetor assembly

Set the lock on top of the needle to the middle position; if economical work is required, set it to the lower position. The engine will start poorly, but will become more economical. We insert the throttle valve with the cutout 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 nozzle, cleaning of all channels, you should screw the carburetor to the engine with a 14 key, attach the hose, cable (from the throttle grip) to the throttle, tighten the mixture quality screw, which is near the gas hose, until it stops, and unscrew it by 2 -3 turns.

Tighten the mixture quantity screw to the maximum; the damper rests on it when raised; it must be inserted into the groove next to the throttle cable. There is also an adjustment with the enricher; it can either be attached to the carburetor, or a cable from it can go to the steering wheel. The enricher is a needle that opens an additional channel with fuel.

Starting the engine after installing the carburetor

You should open the enricher about 1 cm, press the float release button, gasoline should seep through the hole a little, then turn on the ignition, the light should burn brightly, add a little gas, press the kick starter several times.

Website dedicated to motorcycles Voskhod – Information

Carburetor K65

For many years, domestic motorcycles and scooters, as well as Buran snowmobiles, were equipped with carburetors of the K62 family or their varieties. Operation revealed a number of design flaws.

Their elimination required a major modernization of carburetors and led to the emergence of an essentially new device, which was designated K65. Its implementation began at the end of last year and will be completed this year.

Since the carburetor has a long life ahead of it, we asked the engineers of the Leningrad Carburetor Plant to tell us more about it.

At first glance, the K65 carburetor is not much different from the usual K62. But this is precisely at first glance, since modernization affected not the form, but the content. And you will be convinced of this when, together with us, you examine the structure, principles of operation and adjustment of the new device shown in the figure.

First, let's talk about the design and operating principles. It all starts with a system for supplying and maintaining a constant fuel level. Through fitting 20 it reaches the fuel valve 15, which is equipped with an elastic lock washer.

The valve rests on a tongue 18 connected to plastic floats 17, which are interconnected and freely rotate on an axis 16. If for some reason the fuel level rises, its excess is drained from the float chamber through the drain hole 32.

To prevent the pressure in the float chamber from increasing when heated, it is connected to the atmosphere by an unbalancing channel 31.

The main metering system consists of a sprayer 5, a main fuel jet 6, a throttle needle 7 and an air supply channel 8. Fuel from the float chamber through the main fuel jet 6 enters the sprayer 5, rising under the influence of vacuum along the gap between the sprayer and the throttle needle 7.

Voskhod 3M: Technical characteristics, Review and photos of the motorcycle

The Voskhod 3M motorcycle is not just a bike. This is a legend, this is the dream of hundreds of thousands of young citizens of the Soviet Union, who could not even imagine imported Czechoslovak “Java” and “CZ” because of their high cost. This model is not without its shortcomings, but by releasing it, the plant helped many motorcyclists realize an impossible dream and acquire their own two-wheeled vehicle.

Design

Contemporaries often called Voskhod 3M unsightly and unattractive, comparing it with “Java”, “Planets” and “Jupiters”. We can agree with them, but let’s not forget that this motorcycle was noticeably cheaper than all of the competitors listed above, so for such a price one could put up with a mediocre design.

Specifications

The bike was completely in keeping with its time. It was repairable, moderately reliable and affordable, which predetermined its popularity. Many hundreds of thousands of copies were produced, so there is a chance of finding one in good condition even now. The characteristics of the model were not enough stars from the sky even then, during the years of release, but now retro technology is still valued for completely different reasons.

Engine

The 3M Voskhod motor has always been considered capricious, but at the same time tenacious, and it really has a good resource. The two-stroke engine of the motorcycle is a single-cylinder air-cooled power unit, with roots going back to the 60s of the 20th century.

Volume - just under 200 cubic meters (173 to be exact), power - 15 horsepower. Good traction is available from low revs, although power peaks at 5500 rpm and the bike begins to vibrate mercilessly. Alas, this is a design feature of an archaic motor.

The maximum speed it is capable of is 110 km/h.

Transmission

A good 4-speed transmission for its time with a classic scheme (1-N-2-3-4), almost unchanged, migrated to the Voskhod 3M from its predecessors. But the gearbox is very demanding on proper settings; you need to carefully observe the tightening torques of the bolts and set all the gaps. Otherwise, there is a chance of encountering a common problem with this gearbox, when 2nd and 4th gears begin to engage very slowly. In the future, this can easily lead to transmission failure.

Chassis and brakes

Compared to the 2M model, this model has more advanced suspension, the rear shock absorbers have been modified, improved, and also have preload adjustments. At the front, as before, there is a regular telescopic fork, the stays of which are covered with rubber corrugations. It’s difficult to call the suspension soft or energy-intensive, but it also has an undeniable advantage - it is simply indestructible, and even in the event of an oil leak, you can drive for more than one week. But we can’t say anything good about the brakes; the drum brakes on both wheels cope with their task, at best, to a C grade. As, indeed, on any other Soviet motorcycles.

Electronics

It was on the third generation of Voskhods that designers switched from a 6-volt on-board network to a 12-volt one. More precisely, on the Voskhod 3 model a 7-volt generator was installed, but in 3M all the electronics were already 12-volt. But still, this motorcycle has a minimum of electronic components - a generator, a dashboard and lighting optics.

Weight and dimensions

The weight of the motorcycle decreased by 3 kg compared to the previous model, amounting to 122 kilograms of dry weight. This provided Voskhod 3M with good power supply and dynamics compared to its heavier competitors. Its other modifications differed slightly in weight, but how much each of them weighs is now difficult to say, years ago. But the dimensions were unchanged - exactly 2 meters in length and 85 cm in width at the extreme points.

Controllability

Due to the archaic design, the maneuverability of the motorcycle leaves much to be desired, and the braking distance on dry asphalt at a speed of 60 km/h is, according to official data, 20 meters. But for its time, the technical characteristics of this model were quite good, and Voskhod 3M was not inferior to other Soviet bikes that were produced at the same time and sold at a similar price.

Fuel consumption

On average, gasoline consumption is 4.5-5 liters per 100 km, noticeably less than some other models of those years. The engine was originally designed for AI-76, so it is not recommended to fill it with high-octane gasoline. The gas tank volume is the same for all modifications - 14 liters, which is enough to travel up to 300 km without refueling.

Motorcycle price

Now it is impossible to become the owner of a new Voskhod - its last modification, “Tourist”, was discontinued in 2008. Used copies cost from 10 thousand rubles for the cheapest options, and a bike in collectible condition can cost 100-150 thousand rubles or more. But it’s worth considering that many sellers offer motorcycles that have stood motionless for a decade or two in a garage, often without documents. In theory, they can be restored by the traffic police, but to do this you will have to go through nine circles of bureaucratic hell.

Repair and tuning

The undoubted advantage of any Soviet motorcycle equipment is its ease of repair and maintenance. But the disadvantages include the fact that you have to poke around in the garage more often than you would like. This is largely due to the advanced age of all surviving motorcycles, and Voskhod 3M was no exception to this rule.

Repair

You can fix anything in it! No, seriously - almost all components are repairable to one degree or another. Many bikers who now ride Hondas and Harley-Davidsons started with Soviet motorcycles, and it was with their help that they acquired the first motorcycle mechanic skills that are necessary for any lover of two wheels. So if you have never even held a wrench in your hands, there is no need to be afraid of repairs with this model - everything is simple in it.

Spare parts

Nowadays, spare parts can only be found secondhand or in highly specialized stores, and often used, not new. Due to their lack, some owners are trying to adapt Chinese or Japanese components. In some cases, this can be done, but you will have to try hard and also spend a lot of time selecting suitable hardware.

Tuning

If you want to restore the bike to its original condition, as it deserves, then forget the word “tuning” like a bad dream. But if you use Voskhod 3M for its intended purpose, that is, as a transport, then options are possible. Most often, owners change shock absorbers to more advanced ones (there are plenty of inexpensive Chinese options), or replace the carburetor. This is especially true for copies that were equipped from the factory not with Czechoslovakian carburetors, but with Soviet ones of lower quality. We have a separate article on this topic: How to make tuning Sunrise 3m with your own hands.

Motorcycle modifications

Standard Voskhod 3M. It is a modified version of model 3, which, in turn, was developed on the basis of 2M.
Luxury Produced in a limited series, it featured higher quality paintwork and more chrome. Rarely found on sale now.
Tourist. It had a reinforced steering wheel, saddlebags, trunk, roll bars and a higher maximum speed, up to 145 km/h. All differences are clearly visible in the photo. This model was produced right up to 2008!

Advantages and disadvantages

Soviet technology was good, but nothing was perfect. And the Voskhod 3m motorcycle was considered by Soviet bikers to be a rather capricious piece of equipment, which periodically began to take on a life of its own—either it wouldn’t start, or some other misfortune. In fact, caring for your two-wheeled friend and timely maintenance will help you avoid most potential problems.

Advantages

Modified engine air cooling system, increasing its service life.
Modern by the standards of that era, 12-volt electrical equipment.
High-quality carburetors made in Czechoslovakia (not for all years of manufacture).
Availability of brake pad wear indicator.
Built-in anti-theft system (mechanical steering wheel lock).

Flaws

Short service intervals. Your motorcycle needs to be serviced frequently.
Strong vibrations at high speeds, due to which the image in the rear-view mirrors begins to blur.
General capriciousness of the Voskhod 3 M engine and gearbox in terms of settings. If you set any gaps incorrectly, problems will not be long in coming.

Owner reviews

I had such a spendthrift once, then everything was a blast, but then Java broke down for cheap, and I realized that in hell I would definitely get credit for part of the torment. Compared to it (and the comparison is correct, the motorcycles are almost the same age) the Voskhod has zero comfort, it starts when it wants, and shakes at speed like a fitful Chihuahua. There were no serious problems with the engine and gearbox, but little things kept falling off, so now I can assemble and disassemble this motorcycle with my eyes closed. The only advantage it had was that it was cheap, and everything else was a complete disadvantage. Ivan, Tver.

It was a good jalopy for its time, completely indestructible. I didn’t do anything with him - I ran away from traffic cops through the fields, standing on the steps so as not to fly out of the saddle, and I carried three passengers at once, and I poured gasoline that had been standing in a barrel in the garage for about five years, but he couldn’t give a damn. Iron and reliable, like the Soviet Union! It's a shame they haven't made motorcycles like this for a long time.

Rework and repair

A significant drawback of the Ikov 2829CE carburetor is poor starting of the motorcycle in cold weather due to the imperfect design of the enricher. A difficult start is noted not only by the owners of 638 models, but also by the owners of some Kovrov motorcycles on which such carburetors were installed from the factory . The thing is that fuel is taken to enrich the mixture from a separate channel in the float chamber, to which it is connected by a nozzle.

Also, a ventilation duct located on the side of the carburetor is used to draw air to the enricher. The cross-section of this channel is so large that the vacuum in the enricher is not enough to suck fuel through the nozzle. As a result, it is not the enriched mixture that enters the channel behind the throttle, but gasoline vapor mixed with cold air, which of course does not contribute to successful engine starting.

To eliminate this problem, the carburetor needs to be modified. The side channel can be plugged, for example, with a gas-resistant sealant, thereby “pressing in” the air.

In this case, the vacuum will be sufficient to suck the required amount of fuel from the chamber. You don't have to worry about chamber ventilation, because... On the other side of the carburetor there is the same channel.

Correct setting of the scooter carburetor

Another alternative solution to this problem is to install a float suppressor, as on old carburetors (more details in the photo).

Mikuni carburetor (Chinese) with yamaha dt 175 at sunrise

The first production Voskhod motorcycle was equipped with a K-36B type carburetor, which had two metering systems - main and idle, as well as an enrichment device.

Wash the removed parts with clean gasoline, inspect and reassemble in the reverse order. The factory settings ensure maximum and optimal engine efficiency.

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DIY motorcycle repair Voskhod

Engine

The “heart” of a motorcycle, even with the most careful use, gradually wears out - this is facilitated by the abundance of heterogeneous mechanical loads in the cylinder-piston group and other moving parts, temperature effects on the metal, the chemical composition of the working mixture and exhaust gases. DIY motorcycle repair Voskhod most often includes the following engine work:

removing the power unit from the motorcycle frame;
partial or complete disassembly of the internal combustion engine;
replacing piston rings;
restoration of the cylinder mirror;
repair or replacement of the piston, connecting rod, crankshaft;
replacement of support bearings, liners, seals;
lubrication, fastening, adjustment work.

Engine repair, like the repair of other units, must be preceded by a comprehensive diagnosis of its technical condition, which includes an analysis of operational parameters (approximate indicators of developed power and speed, fuel consumption, sound of operation, color and character of the exhaust). If necessary, diagnostics are performed on the bench, and specialized instrumentation is used.

It is important to navigate the structure of a two-stroke internal combustion engine of a motorcycle and understand how each specific type of repair is performed. So, when replacing piston rings, you can do without removing the engine.

It is enough to unscrew the stud nuts, remove the cylinder cover and, opening access to the piston, bring the piston to top dead center. Then the worn rings are removed and new ones are installed. The engine is assembled, not forgetting to replace the gasket.

This completes the repair.

Much more complicated is the process of replacing the crankshaft bearings and its seals, the need for which, especially if the motorcycle is used incorrectly, arises quite often. You will need to disconnect and remove the internal combustion engine, clean its external surfaces, disassemble the crankcase, allowing access to the crankshaft, and dismantle the latter.

It is important to be careful when knocking out old bearings - if they become distorted, they can damage the seat. And, no matter how trivial it may sound, do not forget to remove the retaining rings. Then the new bearings are carefully pressed in, the crankshaft is installed on the left side of the pan and the engine is turned over. A pin is put on the nuts and the assembled module is screwed into the studs.

note

The power unit is assembled in the reverse order. In case of wear of the inner surface (mirror) of the cylinders, they are bored to repair size and ground. This is a complex and highly precise job that must be carried out by experienced professionals and using special equipment. However, preliminary work - removing and disassembling the internal combustion engine - can be done independently.

After the repair, you will have to replace the piston with rings with parts from the corresponding repair group.

Ignition and carburetor

Setting the ignition includes setting the gap between the coil core and the sensor magnet within 0.295...0.305 mm. The piston ignition timing should be 3.5-5 mm to top dead center. Adjusting the carburetor is somewhat more difficult. If you are repairing a Voskhod-3M motorcycle, then you will have to deal with the K65V carburetor, and the main tools will be the quality and quantity screws included in its design. Using the first, you can lean or enrich the mixture - change the proportion of fuel and air entering the cylinder. The second determines its volume per working cycle. With the standard setting, the quality screw is screwed in completely and then unscrewed half a turn. Then the rotation of the quantity screw achieves the minimum stable speed and the quality of the mixture is re-adjusted. Finding the optimal adjustment balance is a search for maximum traction and stability with minimum fuel consumption.

Source: https://mirmotorbike.ru/sssr/remont-motocyklov-voshod.html

Adjusting the K-36B carburetor

Adjustment at idle speed is carried out as follows: 1 - before starting the adjustment, you need to start and warm up the engine. 2 — set the fuel corrector coin to the farthest position from you; 3 — by turning out or screwing in screw 14, set the minimum possible engine speed; 4 - tighten screw 13 until it stops, gradually unscrew it, achieve clear, stable operation of the engine; 5 - set screw 14, lower or raise the throttle to the minimum stable idle speed.

The quality of the mixture is adjusted in operating modes by moving the metering needle 6 in the throttle valve to one of the five annular grooves, while raising the metering needle ensures enrichment of the working mixture, lowering ensures depletion.

Jawa 250/350

On YAVA-250 motorcycles with indexes 559/02 and 559/04, Ikov 2926SD (before 1967) and 2926SBD (after 1967) carburetors were installed. On YAVA-350 motorcycles models 354/06, 360/00, Ikov 2926SBD carburetors were used.

The first carburetor has a separate starting carburetor (enricher), which is activated by lifting the cable using a lever on the steering wheel. Its presence on the 250 cc motorcycle model is due to the fact that a smaller single-cylinder engine is more difficult to start in cold weather than a two-cylinder one. Otherwise, these two carburetors are almost identical. Later, rotary air dampers were installed on both motorcycles on the carburetor inlet pipe. A separate starting enrichment unit was no longer needed.

How to Correctly Adjust the Carburetor Gas 53

Before you begin adjusting these carburetors, you must perform the following procedure:

Open the gas tank tap and wait until the carburetor float chamber fills. Close it and remove the chamber cover to make sure there is no dirt on the bottom. In case of contamination, remove the carburetor and blow out all channels with compressed air or rinse in kerosene. Attention, to prevent contamination of the carburetor channels, it is necessary to install a fuel filter in the gasoline fuel supply line. Its material should consist of a thin mesh, which will allow the incoming gasoline to be cleaned of oil and foreign impurities.
Be sure to check it out. Is the ignition timing set correctly?
Check the condition of the filter element in the air filter. If the paper filter is dirty, it needs to be replaced. It is enough to wash the filter oil element in gasoline and moisten it with a small amount of engine oil.
Setting the screws according to the table. Set the quality adjusting screw (18) and the throttle needle (25) to the positions indicated in Table 2. Adjust the free play of the throttle cable sheath to 2-3 mm using the stop (1).
Setting the minimum speed. Start the engine, use the quantity screw (12) to set the minimum stable engine speed. Ride a motorcycle for 5-10 km, warming up the engine.

Drawing of carburetor detail Ikov 2926SD

The table shows the adjustment data of the 2926SBD carburetor
The process of adjusting the carburetor itself proceeds in a strict, sequential order:

Installing the “correct” spark plugs. For driving in warm weather and after the break-in period, install analogues of “cold” Pal -8.9 spark plugs (NGK BP8HS-BP7HS, Brisk N14-15, Bosch W3AC-W4AC, etc.).
We are looking for minimum speed. Start the engine and use the speed screw (12) to find the minimum engine speed at which the motorcycle does not stall.
We increase the speed. Turn the quality screw (18) slowly to the left to increase the speed.
Again, use the quantity screw to “feel for the minimum.” Repeat the operation until the motorcycle begins to stall at idle. When the limit is found, the quality screw needs to be tightened a little, enriching the mixture. Depress the clutch and engage gear. In this case, the motorcycle should work steadily and not stall (of course, with a working clutch). If the motorcycle stalls, you can raise the throttle a little. Attention, to adjust the carburetor in medium load mode, you should find a straight road with horizontal surface, without obstacles. This is necessary to control the adjustment when the motorcycle is moving in direct gear at a speed of 40 km/h and above. The weather should preferably be warm and calm.
Check the operation of the engine while the motorcycle is constantly moving at a speed of 60-70 km/h. If the engine operates unstably (every cycle), then these are all signs of “flooding” the spark plug due to a rich mixture. In this case, the needle must be lowered until the motorcycle begins to operate normally.
Check the acceleration of the motorcycle over a 1 km section. Accelerate the motorcycle from 40 to 80 km/h and evaluate the engine performance. The sound should be clear, without interruptions, acceleration should be smooth, with a uniform increase in engine speed.
Assess engine response. Let's see how the motorcycle reacts when you sharply turn the gas lever, when accelerating over a short distance. Overclocking must be efficient. The main condition is the absence of a “failure” - the effect of a sharp leaning of the mixture due to the rapid opening of the damper. This can happen if, when moving the needle, it was lowered very low or due to air leaks in the intake tract. In the second case, the reason lies in incorrect idle speed adjustment.

Useful video

Visual video material on removing, cleaning, tuning and adjusting the Java 350 model 354 carburetor.

Sometimes, while operating a motorcycle, conditions may arise when it is necessary to change the current carburetor adjustment (weather conditions, number of passengers and motorcycle load, use of fuel with a different octane number). In this case, it is enough to replace the main fuel jet, which can be accessed by unscrewing the plug at the bottom of the carburetor.

For example, if the motorcycle is operated in winter weather, then it is necessary to install a larger fuel jet (main fuel jet). You can select it experimentally by determining the composition of the mixture by the color of the central electrode of the spark plug.

When mixed optimally, the color should be brown, reminiscent of rust or a shade of red brick. Accordingly, if the mixture is too rich, the insulator will be covered with black soot. And with a lean mixture, the electrode will be light yellow or gray. It is the last option that poses the greatest danger. In this case, the electrode may melt, and its parts will fall into the CPG, which will lead to expensive repairs.

Attention! The condition of the spark plugs should be assessed after a short motorcycle ride at a speed of 75-80 km/h (1-2 km). The spark plug must be unscrewed from the cylinder immediately after stopping the motorcycle, and it must be turned off while moving. Only if these conditions are met will the color of the spark plug electrode be closest to the actual one.

Adjusting the K62 carburetor

The carburetor is one of the main components of a motorcycle, which affects the operation of your bike’s engine. Its correct adjustment affects how it starts, runs, and engine power. The second element is the ignition system. In this article we will talk about adjustments that can be found on motorcycles Minsk, IZH Jupiter and Planet, Voskhod.

The K62 carburetor has two adjusting screws, with which you can change the idle speed, and a needle, by changing the position of which, you can change the property of the mixture (enrich or lean it). When we raise the needle, we enrich the mixture; when we lower it, we make it leaner. Adjusting the quality of the mixture is carried out by walking 2-3 km (at a speed of about 60-70 km/h) and looking at the spark plug. If the candle is covered with the working mixture (the candle is oily, dark brown or black), we lower the needle; if it is too dry (the color is white, light straw), we raise it. As a result, a light brown soot should appear. But this is just part of the adjustment; each time you need to set the carburetor idle speed. So we continue to adjust further:

To adjust the idle speed on the K62 carburetor there is a “quality screw”. This screw supplies air even when the throttle is closed. We repeat, the propeller produces air, although some people think that this propeller is designed for fuel. Therefore, by tightening the quality screw, we close the air flow, that is, we enrich the mixture. If we unscrew the screw, the mixture becomes leaner. As was said, this screw provides air in all positions of the damper, and therefore at idle speed of the crankshaft. Therefore, the quality screw belongs to the idle air regulator. At this moment, it significantly affects the operation, but if the gas is at medium or high speeds, then the influence is not large, but it is present. So, it all comes down to the fact that the idle speed is adjusted, and this automatically affects all engine frequencies. Now, after a short introduction, let’s talk about the idle speed adjustment itself. To keep things simple, let’s talk about adjusting K62 K carburetors and similar ones for Minsk and Voskhod motorcycles. But by analogy, the adjustment of all types of carburetors is the same, so it will also work on IZH and other motorcycles.

Spare parts for motorcycle Voskhod, Sova

The history of the truly popular motorcycle Voskhod goes back to the distant post-war years, and the first prototypes appeared already in March 1946. The production of “sunrises” was established at the Degtyarev plant, where anti-tank rifles were manufactured not so long ago. In less than a year, production was reoriented to the production of motorcycles for the population, and soon ZID motorcycles became as popular as Java, Minsk and IZH. And today, spare parts for the Voskhod motorcycle are in demand, which means that motorcyclists are in no hurry to exchange their “old” friends for scooters and modern mopeds.

K-36B carburetor diagram

1. Fitting. 2. Fuel corrector. 3.Fuel corrector spring. 4. Locking needle. 5. Throttle valve spring. 6. Dosing needle. 7. Mixing chamber housing. 8. Air intake channel. 9. Sprayer. 10. Main jet. 11. Fuel corrector jet. 12. Float. 13. Idle speed adjustment screw. 14. Throttle set screw. 15. Throttle valve. 16. Cover of the mixing chamber housing. 17. Cable guide. 18. Leaf spring. 19. Float release button. 20. Float chamber cover. 21. Float chamber housing.

Adjusting the K-62V and K65P carburetor

Adjust the idle speed in the following sequence: 1 - screw screw 18 until it stops, which regulates the air supply for idle speed. Then unscrew one turn. 2 - Open the throttle slightly using the throttle. 3 - Start the engine and warm it up. 4 - Using bolt 16, lowering the throttle valve, achieve minimal stable engine operation. 5 — Unscrew screw 18 to set the maximum speed. 6 - Using bolt 16, lower the damper again to minimum speed. 7 - Check the adjustment. Sharply open the throttle with the throttle. If the engine stalls or there is a failure in operation. When switching from idle to main working. The adjustment is incorrect. Screw 18 needs to be used to enrich the fuel mixture - tighten it by a quarter. Or repeat the entire adjustment. 8 - Adjusted correctly, if there is no failure and the motor does not stall. And it continues to gain momentum.

What did they put on the motorcycles from the factory?

A distinctive feature of all Czechoslovak carburetors is the cylindrical shape of the throttle valve. It is driven by a mechanical cable drive, which determines their belonging to slide carburetors.

There are numerical and alphabetic indices on the case, which are deciphered as follows:

the first two digits (29) – carburetor with throttle valve (with variable vacuum);
26 (24,28) – diffuser diameter;
SD - carburetor with a starting device and a main fuel jet located under the nozzle;
SBD – carburetor without starting enrichment. The main fuel jet is located under the nozzle.

Adjusting the K62 carburetor:

Hello! Please tell me, I have a Minsk 125, it’s a Pakko (original, new), it’s not in use, it works fine, that is, the idle is normal, it picks up speed briskly, but as soon as you start to move out of place, it doesn’t pull well, or it may even stall, you just need gas open more than halfway. The quality screw is screwed in completely, but if you unscrew it by 1-1.5 rpm, you won’t be able to move it at all - the engine will stall. The spark is normal, the ignition is set correctly, the needle is in the middle position. Please tell me what’s wrong, this is the first time I’ve encountered such a problem?

Comments

Place a cart from Minsk at sunrise and it will move even on dead rings!

Hello everyone, what should I do at sunrise? I can’t get into 4th gear

Same problem. Especially if you brought the engine to a boil and are driving at 4 jams! Try changing the piston, it's 1 2 maybe there's something wrong with the carburetor, it doesn't give enough fuel!

how to adjust the clutch

I can’t find a nut for the sunrise basket, please advise what might work.

healthy. When you start moving it starts to turn off, what should I do?

maybe the carburetor is not getting enough or is flooding, take a look

Hi. Guys, what should I do? I have a sunrise 3m carburetor k65t, 89 km/h, but it overheats quickly, what should I do?

install the original carburetor k65v or k62v

please tell me what could be the problem when the gearbox jams at sunrise 3m?

there is a fault in the box, sort it out

Tell me please! I bought a new high-speed shaft for sunrise 3m and it doesn’t suit me! stupidly there are no speeds, but I set it to fast and everything is there! what to do??

Hello everyone, I have a current problem: I can’t get the clutch cable to fit, I bought a new one and it’s longer than the old one, it seems like it should be set, but not how.

what to do if there is a click for speed 4 but no speed

Tell me how can I adjust the clutch? It looks like there are discs in it, I installed everything too, but the clutch just won’t press in. Do you think I should loosen it completely or change the cable, it’s old and kakoita

put the balls in the sleeve

Please tell me how to remove a jammed piston; it was completely rusty all winter; someone had it sitting there and now it doesn’t even move.

Spray some water or gasoline to remove the rust

hello, please help me.. how to remove the clutch basket on Voskhod 3m, otherwise the motorcycle doesn’t pull well, and there are no teeth left on the discs.. I bought a clutch basket and I can’t figure out how to change it.. the thing is that it can’t be removed ( Well, I can’t remove it) what should I do?

how to make 4 speed it’s not there at all

place washers under the secondary shaft

I'm talking about the traction of my dear ones, install the silencers and don't be stupid because as we tried to install others, the fuel consumption increased significantly and the traction disappeared!

I know what to do with the jammers)

Can you please tell me why the clutch handle does not press back?

buy a new cable or look at the spring in the right cover)

great everyone. can you tell me why my clutch keeps disappearing, crackers and balls are fine

install wheels from Minsk

try the front fender from Tula

I bought a sunrise, damn it, you won’t understand what speeds, at what speed you get on that one and I’ll go ((there’s no compression, in short, it doesn’t matter, it’s easier to change the engine, so you can.

I assembled the box, there is no first speed. What should I do?

move on from the second

Under the basket there is a shaft on which the first speed is located, you need to put washers under it! But if you don’t overdo it, there won’t be 2! Center the right side under the drive star, pull out the oil seal and put thin washers there too!

Most likely you put the star on the second shaft the wrong way. it goes down first when you insert the shaft. I had the same henna)

set to sunrise 3m

I wanted to know if it’s possible to put a star on Java 350

People, tell me, is a carburetor from Java suitable for Voskhod-3m?

Transmission

During transmission repairs, the following work may be required:

Adjusting the clutch, replacing its disc and bearing;
Clutch drive repair;
Replacement of gearbox bearings;
Repair of switching module parts;
Restoration or replacement of gearbox gears.

Most of them require high qualifications and are difficult to do at home. The exception is the repair and replacement of drive mechanisms. So, sometimes there is a need to restore the splines for the gearbox foot, replace the clutch cable or its jacket, or adjust the clutch. These works are carried out without disassembling the crankcase.

Repair and operation of the Voskhod motorcycle are closely interconnected due to the age of the model. However, with the proper approach to organizing and carrying out repairs, the motorcycle will remain your faithful friend and assistant for a long time.

Ignition and carburetor

It is these two components that, as a rule, determine the stability of the engine. Often, interruptions in the crankshaft rotation speed, loss of traction, and difficulties starting the engine are associated precisely with their malfunctions. Repairing the ignition and carburetor usually comes down to adjusting them. Setting the ignition includes setting the gap between the coil core and the sensor magnet within 0.295...0.305 mm. The piston ignition timing should be 3.5-5 mm to top dead center.

Adjusting the carburetor is somewhat more difficult. If you are repairing a Voskhod-3M motorcycle, then you will have to deal with the K65V carburetor, and the main tools will be the quality and quantity screws included in its design. Using the first, you can lean or enrich the mixture - change the proportion of fuel and air entering the cylinder. The second determines its volume per working cycle. With the standard setting, the quality screw is screwed in completely and then unscrewed half a turn. Then the rotation of the quantity screw achieves the minimum stable speed and the quality of the mixture is re-adjusted. Finding the optimal adjustment balance is a search for maximum traction and stability with minimum fuel consumption.

Adjusting the fuel level

For this purpose, there is a brass adjusting element on the float, as shown by the white arrow in the photo.

The entire adjustment process comes down to setting the float in a certain position. Remove the bottom carburetor cover and turn it upside down with the float.

We look from the side so that the mark on the float from the mold (black arrow shows) is parallel to the carburetor plane (red arrow shows).

In this position of the float, the fuel level will be within 12 ... 14 mm. This level is necessary for normal engine operation.

Adjustment with dosing needle

The dosing needle for adjustment has five positions and is fixed with a special lock. Raise the needle one notch and increase the fuel supply. We lower it and reduce the fuel supply.

Under normal conditions, the needle is installed in the central groove.

When operating a motorcycle at high temperatures of plus 35 degrees and above, as well as in rarefied air at an altitude of 2000 and above above sea level. The needle should be released one division.

Why choose us

Despite the fact that Voskhods were produced relatively recently, it is becoming increasingly difficult to buy spare parts for the Voskhod and Sova motorcycles. Buyers will find much of what they need for repairs in the catalog of the Russian Motor store. All motorcycle parts offered for sale are scattered according to categories, have a detailed description, and motorcycle enthusiasts can order both used and new spare parts of ideal quality, for the production of which high-quality materials and the most modern technologies were used. If the required part is not available, it can be found to order, which will take a little time.

In order to buy spare parts for Voskhod, you don’t even have to leave your home, since the order can be made remotely. Our store is open seven days a week, we do not know what holidays and weekends are. For customer convenience, we accept up to 40 payment options and offer delivery by mail or courier. In addition to two stores in St. Petersburg, shipping is organized to any region of Russia. The cost and speed of delivery depends on the efficiency of the post office or courier service. If for any reason you are not satisfied with the spare part, we will arrange its replacement or refund within the time limits established by law.

Which carburetor is better at sunrise 3m

Which carburetor should I install?

Keeper

: I am overhauling the entire motor (Voskhod-3M), which carb is better to install?? I heard that Yakov is good! please advise

cadet

: Jikov wins in terms of quality of execution, and the econostat is a useful thing! I would put Yikov! You can read more about carbs in the “Information” section.

Keeper

: what model?? I'm just in the carbs 0!

fomich

: Any one you can find?

cadet

: Jikov 2928 CE

cadet

: It’s easier to ask the seller! Say “Me at Sunrise” and that’s it!

Keeper

: And the price of such a carb? sorry for the flood =)

cadet

:
And the price of such a carb?
x.z. K-65 (68) rubles 300-400.

Keeper

: What is the price of Jikov 2928 CE?

cadet

: Probably 600-900 rubles! Can not say.

cadet

: If money is not a problem, take Yikov; I'm struggling with money - I recommend taking the K-68 - it's also a very good carburetor!

fomich

: Jikov 2928 CE costs>1200 rub. Pekarovskie tobish K-. about 700.

cadet

: Here (Naberezhnye Chelny) K-68 costs only 350-400 rubles! But I don’t know Yikov, I wasn’t interested!

fomich

: And in our Nizhny Novgorod region I have not seen K-68 for sunrise, K-68 only in Izhi, the Urals, and for sunrise K65B

cadet

: We have an assortment of K-68: K-68I and K-68D in Izhi, K-68V in Voskhody, etc.

cadet

: I'm sorry. K-65V is installed on Voskhod, not K-68! And there is an assortment: K-68A, 68D, 68I, etc.

fomich

: So there is no K-68 for sunrise? And if they are so cheap, then maybe stick one from Jupiter.

cadet

: You can plug it in from Jupiter, it will be even better, the diameter of the K-68D diffuser is larger than the Voshodovsky one.

fomich

: well, that’s what I’m talking about

=EsT=

: And a 200 jet can be stuck there.

cadet

: All jets on Pekars (K-62, 65, 68, etc.) have the same thread, if that’s what you’re talking about. You buy a repair kit from K-65V and that’s it! And so on the K-65(68)D there is a 260 jet. The diffuser diameter seems to be 30 mm.

Morgan

: A good Belarusian carburetor, the kind they put on new Minskis. An exact copy of some Jikov, but it’s inexpensive.

cadet

:
A good Belarusian carburetor, the kind they put on new Minskis.
An exact copy of some Jikov, but it’s inexpensive. But the diffuser is probably too small for 175 cm3

Scheme of the carburetor K-62V motorcycle Voskhod

1. Idle fuel jet. 2. Main fuel jet. 3. Float chamber. 4. Sprayer. 5. Float axis. 6. Float lever bushing. 7. Air channel. 8. Nozzles. 9. Dosing needle. 10. Body. 11. Throttle. 12. Needle lock. 13 Throttle spring. 14. Throttle lift limiter (removed after engine break-in). 15. Throttle control cable. 16. Throttle lift adjusting screw. 17. Cover. 18. Idle speed adjustment screw. 19. Fitting for fuel intake. 20. Transition hole. 21. Idle air channel. 22. Drainage hole. 23. Idle air channel. 24. Locking needle with washer. 25. Float. 26. Float sink.

Installation and configuration

Before adjusting a new K 65 carburetor, it must be installed and adjusted.

First you will need to remove the carburetor cap. The throttle spring holds the needle through the lock. It has one round and two shaped holes. A round slot located in the center serves to attach the throttle cable. The T-shaped hole is necessary for attaching the propeller rod.

Having installed the carburetor on the engine, a cable is connected to the throttle, and the cover is secured.

Use the throttle to raise the throttle and check whether the diffuser opens completely. These actions should be performed several times. The diffuser should open and close freely without jamming.

Next, use a screw to raise the throttle so that a gap of 3 mm appears between its bottom edge and the diffuser generatrix.

If the K 65 device (carburetor) has a corrector, it should be removed as an assembly and the cable should be attached to the piston. After this, you should install the unit in place.

Next, you should adjust the position of the stops of the cable sheaths so that their free play is 2-3 mm.

The screw must be tightened until it stops, then loosen it by 0.5-1.5 turns. The fuel hose is connected to the fitting. Fuel should not leak at the connection points.

Then the peak starter turns and the crankshaft rotates 3 turns. The ignition is turned on and the start is made. After warming up, the starter or corrector can be turned off.

Motoblog

A little bit about everything

No, I won’t talk now about how beautiful our sunrises are, although they undoubtedly deserve attention. I’m trying to give the blog a motorcycle theme, so I want to talk about the experience of using my motorcycle, which I’ve been driving for about 11 years.

Over its entire life, the motorcycle traveled 40-50 thousand kilometers, it is impossible to say more precisely, because the speedometer was broken, replaced, and for a long time the motorcycle drove without this device at all. He has seen a variety of roads, from good asphalt to tractor ruts filled with mud. And everywhere the motorcycle showed its good side, it was reliable, contrary to the established opinion that Voskhod is the most “breakable” motorcycle. “I bought Voskhod - fuck all year,” I usually respond to such barbs by nodding towards my motorcycle, “it’s not about him.”

find 10 differences

To be honest, I never liked this name - Voskhod, it is not motorcycle at all. Apparently the choice of such a name was influenced by the specifics of the Degtyarev Plant, which has a defense focus, and harmless names like “Peony”, “Hyacinth”, “Pinocchio” are the order of the day for deadly devices here. I didn’t put up with this and slightly upgraded the name for my motorcycle)

For me personally, the Voskhod is a light city motorcycle; its power and dynamics, coupled with maneuverability and small dimensions, are quite enough for moving around the city. Its “range” is approximately 100-150 km in one direction. More is possible (power reserve is about 350 km), but it’s tiring. The seating position is not very comfortable, vibrations, and limited speed make themselves felt when driving along the highway outside the city. In a word, it’s not suitable for a touring motorcycle) But Voskhod copes excellently with the task of quickly getting around the city from point A to point B. Often drivers at traffic lights, leaning out of their cars, ask “. Where did you dig it up? This is a rarity. What year. “What the hell delivers) Now, point by point, what can I say about Voskhod, I will note the disadvantages, advantages, what changes I made and what it led to.

What does our store offer?

The Degtyarev plant produces Voskhod motorcycles of all modifications, including the legendary “Kovrevets” and the latest models “Owl” and “Courier”, meanwhile Voskhods are quite often found on country roads. Meanwhile, a perpetual motion machine was not invented, and given the fact that even domestic equipment with a large safety margin wears out, it is not easy to find spare parts for the Voskhod 3, 3M and Sova 175 motorcycles. Meanwhile, everything you need for urgent repairs is available in the Russian Motor online store. We offer both large units and equally important accessories:

· gas tanks are the pride of Voskhod, as you can travel up to 500 kilometers at one gas station;

· petrol taps and hoses;

· gear shift shafts, secondary shafts;

· other useful “little things” and spare parts for Voskhod wholesale and retail.

We have been working in the motorcycle market for a long time, and the store employees understand the intricacies of motorcycle design and repair. They will get to the bottom of the problem and will always help, in word and deed. Our specialists will quickly select the required part, help you place your order, and resolve payment and delivery issues.

A good device (it was).

Hello to all fans of Soviet technology!

Since childhood, I have been passionate about motorcycles. Around 12 years old I saved up money for my first moped. Then there were several more. At the age of 13 I was already sick of a motorcycle. In my dreams, of course, there was Java. A job turned up in a production cooperative and, at the same time as going to school, I started earning money for my first motorcycle. In Soviet times, you could take your driving license as an external student at the age of 14. But you could only ride when you were 16 years old. I just turned 14, I went to the then traffic police and paid a fee of 1 ruble for passing the exam as an external student. But I never passed my license then, because there was a problem with the purchase of the motorcycle. Having collected the required amount, I submitted an ad to the newspaper and began to wait for publication. Exactly three weeks later, when my ad was supposed to be published, the advertising newspaper went bankrupt. How sad I was. The advertising newspaper was the only one in the city at that time. Fortunately, the publishing house was reassuring: the newspaper might be published again in about six months. And so it happened, having survived financial difficulties, the newspaper came out, and my ad was published. Unfortunately for me, there was severe inflation in the country (the 90s) and my savings for Java were no longer enough. But somehow I agreed to see the almost new Voskhod-3M at an affordable price. I also considered it as an alternative. I remember an article about him in a magazine from 1989. How many thoughts then slid in impatient anticipation.

The seller brought Voskhod to my house in a minibus. According to the words, his younger brother owned it, but due to the accident on their relative’s motorcycle, in order not to tempt fate, it was decided not to ride the motorcycle anymore. To make the decision more meaningful, the older brother cut the clutch cable with pliers. This is how the motorcycle appeared before me: a little older than a year, with a mileage of about 1000 km, for 1300 Soviet rubles. After starting the engine and some haggling over the cable, the deal was done. I brought the motorcycle into the barn, hung chains and locks on the wheels, and the agonizing wait began.

I immediately repaired the clutch and on a Saturday morning in April, I got up at 5 am and rolled the motorcycle out onto the street. The timing was chosen for a reason. After the moped with its two speeds, the power reserve of my Voskhod seemed to last forever. There were absolutely no cars on the street then, and after a short warm-up I drove off. Wow, you have to experience this, it makes no sense to describe it. Having made a circle of honor of several kilometers and reaching speeds of up to 80 km/h in the city, I returned home safely. Afterwards there were several more similar outings, and after that I transported the motorcycle to the dacha for the summer holidays.

On the technical side. The single-cylinder engine turned out to be dull at low speeds. But speeds 1 and 2 with full clutch release brought trembling in the knees. This was more pronounced, since even with a fairly low base, handling was far from ideal. Consumption was around 4-5 liters at any intensity of use. I was pleased with the depreciation. The front fork absorbed bumps clearly. The stock of rear shock absorbers was also enough, they also had 5 degrees of stiffness adjustment. The maximum was 115 km. at one o'clock. The speedometer quickly shrank because its worm drive was very poor. During the summer I bought a cooperatively produced fairing. The rear was raised by 8 cm, which, surprisingly, only improved handling. Added a second stop signal on the man-made antennae. The wheels are decorated with imitation cast spokes. I became the first guy in the village. Trips to the river, with girls and for beer became the main operational mileage over the summer. Then the winter was slowly passed through.

By the following summer, a fuel shortage hit. You spend two hours at a gas station to get your 20 liters. Plus the clutch began to slip, which could not be repaired. It was decided to sell the motorcycle under pressure from a buyer who appeared. The amount was impressive - 50 US dollars. I was glad to get rid of my friend who had begun to mope. And the buyer, having brought the motorcycle to its original condition, put it up for sale for other money.