Why won't the Neva walk-behind tractor start?

Question: I use a Neva MB-2 walk-behind tractor with a Subaru engine. Starts well, spark plug is new. You start to apply load - press the lever on the handle, and the engine starts to stall, it doesn’t seem to pull. I plowed half of the garden normally, but I can’t plow the other half, I could barely get it into the garage, I can barely pull myself together, I don’t sneeze, I don’t puff, but it keeps stalling.

Answer: Check how easily the rod moves from the lever on the crankcase to the carburetor throttle valve. On these engines it is simple - everything is visible. There is only one craving there. When the engine is not running, it should move completely freely, without the slightest jamming. And come back with a spring. Second, try replacing gasoline with something else. Even from a completely different gas station.

Question: Please tell me which drive belt is best to install on the Neva MB-2 walk-behind tractor with a Honda engine. And is it possible to install a non-factory one? I read somewhere that they installed a front-wheel drive alternator belt. Will it fit?

Answer: Select according to your parameters. The size of the original belt on MB is 1180. Profile A.

Question: I use a Neva MB-2s 7.5 pro walk-behind tractor with a Robin Subaru ex21 engine (7 hp). I bought it last year, assembled it and put it in the garage for the winter, but didn’t start it. Yesterday I decided to try it and it didn’t work, I filled it with gas, there was compression, there was a spark, the spark plug was flooded, but it still wouldn’t start. Today I changed the gasoline to a fresher one, there is no use, the compression and spark are gone, the spark plug is flooded. What could happen at zero? Is the factory Japanese spark plug bad?

Answer: Did you happen to forget to fill the engine with oil? Apparently your oil level is insufficient, which is why the ignition interlock sensor has tripped. Oil is not poured according to the dipstick, but in the amount indicated in the operating instructions. The normal oil level is when it reaches the top thread of the filler neck thread. It should even drip when you unscrew the plug with the dipstick. The walk-behind tractor must naturally stand strictly horizontally relative to the surface.

Question: Tell me, what checks and adjustments need to be done after the Neva MB2 walk-behind tractor has not been in operation for a long time?

Answer: - check the oil level in the engine crankcase by unscrewing the plug (after waiting for some time to allow the oil to drain, if the engine was previously uneven). — check if fuel is flowing by opening the fuel supply valve. — check the gasoline in the carburetor by unscrewing the settling glass under the carburetor. — check the spark plug as standard for an auto-moto (dry, wet, sooty, gap, etc.). — Check the air filter for contamination. — check whether the air damper opens and closes with the start lever (in the same place as the fuel valve). — check whether the on-off switch closes. ignition — check the throttle cable - does it move freely? Are there any bends or pinches, is there any rust inside? - check the stroke of the throttle cable with your hand using the throttle handle (the starting stroke may be adjusted incorrectly - try to open it as much as possible for starting, there is a larger or smaller drawing near the handle). - check the fastening of the cable near the carburetor - is the body of the cable tightened with a clamping bracket, is it not overtightened, the cable itself (thin steel wire) is clamped with a cross screw (for me) in the through nut, you can manually temporarily tighten the throttle handle near the carburetor to start, check for Are there springs there that return everything to “0”. - do not fill the tank completely with fuel at the first start - let it be a little, or remove the filler cap. - start with the starter smoothly, but firmly, pull the handle - when you feel a catch - only then a jerk.

Question: help with this problem - the Neva MB-2 walk-behind tractor, the Honda GC-190 engine started working only at high speeds, as I understand it, the gas regulator does not work.

Answer: The regulator, it never fails on its own, it’s too primitive, there’s nothing to break. There must always be an external reason. The following cases are possible: Subaru engine. The regulator does not work - the engine rotates at only one speed, does not respond to control of the handle, and reduces speed under load. The reason is that the roller coming out of the engine (on which there is a long lever) has “dried up” in its hole. Cured by disconnecting the long rod from the carburetor and turning it by hand several dozen times from extreme to extreme position until it began to work freely. The engine is similar to a Honda. The regulator does not work the same way, with the same symptoms. I remove the carburetor - the throttle axis does not rotate. Fine dust got on the axle and it jammed. I removed the damper, pulled out the axle, washed it, blew it out, and put it back together.

Question: Tell me why the spring on the clutch cable of the Neva MB-2s 7.5 pro walk-behind tractor with a Subaru engine stretched. Is everyone like this? or marriage. Maybe because the belt has stretched? By the way, can you tell me what size belt it is? and how quickly can it stretch? I didn't notice right away about the belt stretching. and then they tried to tension the cable and the spring burst (they re-attached it to the coils, since it was stretched) Or maybe the belt was simply stretched to the limit? And that’s why speed 2 didn’t work when plowing? (pulleys are set to low speed).

Answer: Belt A1180. Don't buy cheap ones. There is a bitter experience. They stretch, overheat, twist, and eventually break.

Question: I am using a Neva MB-2s 6.5 walk-behind tractor with a Subaru EX 21 engine. During operation, I replaced the oil in the engine (it was black) and in the gearbox. I managed to plow the garden a little. Then I decided to mow the area with a rotary mower. Everything was fine at first, however, at a certain moment I noticed that black soot was coming from the exhaust pipe and the engine began to rev unevenly. He stopped and turned off the engine, but when turned off, it did not stop working immediately, but detonated and fired for some time. I thought maybe the fuel was of poor quality. I restarted it and started mowing again, but the black smoke still continued to flow. The engine ran for about another minute and suddenly white smoke began to pour out of it and the walk-behind tractor began to stall and choke. I turned it off immediately. I took off the rotary mower and rolled it in neutral to the house and left it to cool. About an hour and a half later I started it again. At low speeds it works fine and maintains speed evenly. it doesn’t smoke, but as soon as you add a little gas (without load), at first it starts to vibrate more strongly, then it starts to smoke again and the speed jumps. Tell the wizard how to fix or get rid of this problem?

Answer: First, an air filter (you can start it without it for testing), a spark plug, then flushing and blowing the carburetor. If you changed the oil, then it is possible: 1. overfilled - place the MB2 on a level surface so that the engine base is horizontal, wait a little and check the oil level on the dipstick. 2. It is quite possible to tilt to the sides when working on uneven surfaces - then the oil will “throw around”. 3. check the engine idle speed adjustment, on level ground after warming up. i.e., releasing the “gas” and gaining it is at the end of the cable that is clamped near the carburetor. I have it adjusted so that the idle speed does not turn off the engine, otherwise you never know. That is, by resetting the “gas” to “0” it won’t stall.

Question: A completely new walk-behind tractor Neva MB-2s 7.5 pro with a Subaru engine; when milling, the cutters hardly spin (under difficult conditions) and the sound is unpleasant. I think the fault is in the belt (probably stretched). The belt looks like new, can it be tensioned? There is no room to adjust the clutch handle anymore. Could there be another malfunction?

Answer: I had the same thing, if it’s urgent and temporary, then you can shift the motor platform relative to the frame to the following holes, i.e. those that are closer to you, if you look at the walk-behind tractor from the front. But most likely you will also need to adjust the motor itself along the platform, and this is very difficult, because a tubular one cannot be reached there with a regular key or head, and in order to slip the tubular one in, you need to pull the motor with the platform off the MB-2 frame.

Question: I spent a long time choosing from motor cultivators, but I bought a Neva MB-2s 6.5 walk-behind tractor with a Subaru EX-17D engine. Please tell me, before starting operation, do I need to change the factory oil to a new one?

Answer: The factory fills the engines with oil that is not the worst - don’t drain it, work on it. Regarding idling, I would not recommend it. All Robin engines undergo exhaust control at the factory, which includes starting and running for some time. That is, as if to begin with, the engine has already turned a little. Then the oil is drained and onto the packaging. The engines for Neva MB-2 walk-behind tractors arrive at the manufacturing plant without oil; after installing them on the walk-behind tractor, they are filled with oil, started and placed on the stand. For the first period of operation of the walk-behind tractor: I think that it would be best to start the engine, warm it up a little and start working. But it’s best not to work at full throttle and not to overload the walk-behind tractor - don’t install additional cutters, don’t cultivate virgin soil in second gear. And don’t forget to change the oil with fresh one no later than after 20 hours (This is for Subaru).

Question: Can you tell me how to cut the beds for planting potatoes? Motoblock Neva MB-2. Honda engine. Quick in the field. In operation for one year. Can I use a hiller, or is there a special plow?

Answer: Most likely it won’t work with a plow. The walk-behind tractor with its right wheel follows the cut furrow, but what if the potatoes are already laid out there? I don’t know how, where, but here we cut furrows with a hiller. You can then fill them up with the same hiller, but this must be done as carefully as possible - you need to guide the wheels along the ridges so as not to fall into the furrows with potatoes and crush them. Usually, not very large areas are cut with a hiller and covered with a rake.

Question: During maintenance of the Neva MB-2b 6.5 pro walk-behind tractor, I visually do not see any oil in the gearbox through the plug (breather). I read in the instructions that it should be 2.2 liters. I thought I could see through this plug (similar to the engine). But, as I already wrote, it is invisible. Question: is this how it should be?

Answer: The plug is on the side of the gearbox. Visually, the oil was also not visible. I felt it with a wire and it’s there. I rolled the unit on its side. Added oil. Transmission oil. The passport must contain the brand of oil. I understand that when pouring oil into the filler breather, oil should flow out of the control breather when the level becomes normal. The walk-behind tractor must, of course, be horizontal.

Question: Is it possible to fill the Neva MB-2b 5.5 motor-block with semi-synthetic 10w30 oil purchased from auto parts?

Answer: Of course, it is possible if it corresponds to the API category - SF, SG, SH, SJ and higher. The instructions for the engine should contain recommendations for the use of oils depending on the ambient temperature. 10w30 - all-season.

Question: Yesterday I tilled the ground with cutters. Neva MB-2k 7.5 with a Honda engine, the gear shifting was very frustrating, sometimes you have to apply gas to get it into gear (which can be done, I don’t really want to drag it into the city). Tell me approximately how to mill correctly (how much to open the throttle and what gear)?

Answer: don't give it too much gas. There are no synchronizers in the box. And for normal inclusion you need to move the pulley a little and stick the gear in. In the instructions at this point there is. The gears in the gearbox can fly off from the throttle - it is generally forbidden to shift while moving.

Question: While operating the Neva MB-2k 7.5 walk-behind tractor with a Brigss&Stratton engine, a malfunction occurred. Doesn't pull when plowing. A friend looked and said that the belt was not tensioned. Adjustment on the handle did not bring the desired effect. I moved the platform with the engine forward to the outermost holes. It doesn't idle as it should. I would like to adjust it to the maximum before plowing. In connection with this, the questions are: Did I do the right thing so far by moving forward? Are there any other ways to adjust (other than using the handle and shifting the platform). Which of the three positions is best to put the belt on the drive pulley and which of the two positions on the large one? (As I understand it, traction also depends on this).

Answer: There are two streams for the speed of the walk-behind tractor. Third power take-off shaft for attachments. The clutch is adjustable only on the handle. Most likely the cable spring is stretched. Alternatively, buy a new cable. Yes, you understand correctly when the speed increases, the traction disappears.

Question: Please recommend an engine for the Neva MB-2b 6.5 pro walk-behind tractor, except for the unnamed Chinese ones, otherwise they have a power indicated on the body that does not correspond to reality. Did you like the Brigss&Stratton engines, how are they reliable and fuel consumption?

Answer: Today I just put into operation my walk-behind tractor with a Brigg Stratton engine. The reality lived up to my wishes, I am very pleased. I won’t say anything about reliability and consumption yet, but when I was choosing, the advantage in comparison with the subarik was that they talk about unpretentiousness to fuel (of course, everything is relative, but still).

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Important
“If you want to connect a new printer to your computer and you don’t have a 12-year-old child at hand, then most likely you will suffer all weekend” (c) Scott McNeil, President of SUN Microsystems

It's time to plow. I rolled out my Meccanica Benassi MF 223 walk-behind tractor, checked the oil, filled it with gas, and tried to start it. Children gathered nearby and watched. The last time I started the walk-behind tractor was a year ago, only a few times and I already forgot how to do it. I read the section of the instructions for the Subaru Robin EX17 “Starting the engine” and follow it:

Installed. "2. ..."

But the engine won't start.

I read the instructions again and try to start it:

"1. Set the engine switch to position "I" (ON). See figure..." Checked, installed. "2. ..."

The engine will not start.

What's the matter? It should start. A year ago it started 2-3 times.

I read the instructions, fortunately, they are small, only a dozen pages in small handwriting. And it says “If you do not intend to use the engine for more than 1 month, drain the fuel in order to prevent the formation of tar in the fuel system and on carburetor parts.” And I,..., a year ago I didn’t drain the fuel and now... But better late than never. I unscrewed the special screw at the bottom of the carburetor and drained the gasoline. Since it began to smell strongly of gasoline, I drove the children away. Filled with fresh gasoline. I'm trying to start it. I already know the “Starting the Engine” section by heart:

"1. Set the engine switch to position "I" (ON). See figure..." Checked, installed. "2. ..."

But the engine won't start. What is it?

I read in the instructions about the fuel sump, which needs to be checked regularly. I found it, unscrewed it, and it was clean.

Maybe I’m weakened from winter physical inactivity and tugging weakly? I began to pull more energetically, but the engine would not start, and my back began to hurt.

A year ago everything worked without problems, I flew only 2 hours. Wintered in a cold room, but under a canopy, almost no traces of rust. Everything should work. But the engine won't start. Taking it to service is problematic. Service in Kyiv. The walk-behind tractor will not fit into my car. Ordering a gazelle 2 times to take it away and bring it back is expensive. You need to remove the engine. I really don't want to take it apart.

This is Monica Bellucci Meccanica Benassi - the most reliable walk-behind tractor. It costs so much that it’s scary to remember (and with each jerk of the starter it gets worse) and it’s a shame to say. Engine Subaru Robin EX17 - written Made in It was not made by our guys - it must work. But it won't start. The children periodically ask to come closer, but it stinks of gasoline, and I don’t allow it.

I have never had to repair gasoline engines. I am studying the “Troubleshooting” section of the instructions. They write there that you need to check the spark at the spark plug. To do this, you need to unscrew the spark plug, but it sits deep, and you can’t unscrew it with a regular socket wrench. The lids on both sides get in the way. I really don’t want to take it apart!

I took off the trigger cover, but still couldn’t get to the spark plug. I took off the cover on the other side of the spark plug, the timing belt appeared under it, but I still couldn’t get to the spark plug. You need a 21 socket wrench, but not an ordinary one, but an extended one. I remembered that the gas generator included something similar. Eureka! Key for the candle! I unscrewed the spark plug. The instructions say that the distance between the electrodes in the spark plugs should be 0.6-0.7 mm, but mine is more than 1 mm. I corrected it, screwed in the spark plug, and screwed the caps back on. I try to start it, but it won't start.

I unscrew the spark plug and there are no traces of gasoline visible. Either there is no gas supply, or this is how it should be. I put the spark plug to the body, I start it - there is no spark. This means the power supply is not working. What's the matter? I carefully study the electrical wiring. Eureka! That's the problem! The contact that goes from the switch to the body does not fit well to it.

Corrected. I try to start it, but it won't start.

What to do? It seems like a primitive device, cannot be compared with the MIG-25 PDS. And everything should work. It’s not like I, a giant of thought,… won’t be able to start it. What am I doing wrong? I really don’t want to take it apart! But if I don’t start it, I’ll have to remove the engine and take it to Kyiv for service. I really don’t want to take it apart! And time goes by.

The former young technician, “the one who sits inside me” (c), says: “It’s interesting to see what’s inside.” But the former aircraft mechanic, “the one who sits in me” (c), says: “In order for the technology not to let the technology down, the technician needs to meddle less with the equipment.” And the former typewriter repair mechanic, “the one who sits in me” (c), says: “After assembly, you will still have extra parts. The guys at the service center, which you still have to take to, will swear a lot. Surely the fault will be found quickly, and then they will correct your work.” And the former mechanical engineer, “the one who sits in me” (c), says: “Well, what do you care about the Japanese. If what they put together doesn't work..." And a former graduate of the Department of Production Organization, “the one who sits in me” (c), says: “You have already spent 3 hours. And the effect? How much more are you going to spend?”

The children ask to come over again. Gasoline hardly stinks, and I allow it. My 9-year-old son comes up, points to the steering wheel and asks: “Why is it turned off?” I look at the steering wheel, and there is a second button for turning on the power of the electric motor, which I forgot about, and it is disabled! “@#%&%#@*@%#%#@*@*@%#%@#%&%#@*@%#%#@*@!” - thought Stirlitz. I turn it on. The engine started with one jerk.

The fact is that the walk-behind tractor comes with 2 manuals: for the Subaru Robin EX17 engine and for the Meccanica Benassi MF 223 walk-behind tractor. In the instructions for the Subaru Robin EX17 they write “Install the engine switch...”, which is located on the engine. And it is clear that there is not a word about the second switch. But the instructions for the Meccanica Benassi MF 223 walk-behind tractor say nothing about starting the engine. Last year I was studying all the switches on the steering wheel and this switch turned on, but today I didn’t look there. And my little one has had a lot of electric toys, and he knows what “On” and “Off” mean.

04/29/2013

© Vitaly Vorobiev

A mini-tractor is considered a functional device. It is indispensable for farming. Attachable special equipment makes it possible to carry out cultivating the territory, mowing grass, removing snow, transporting goods, planting and harvesting crops. Often a situation arises when the walk-behind tractor does not start. The owner must establish the cause of the failure and eliminate the damage.

Possible reasons

Does the walk-behind tractor start and stall? Why is this happening? There may be several reasons why a motorcycle does not start when starting. These include:

• damage to the carburetor (in units with a gasoline engine);
• defective ignition and glow devices;
• low level of basic lubricant.

When unusual changes occur in the unit and its operation becomes unstable, the carburetor is checked first. In this essential unit, the formation of the fuel-air mixture (FA) and its dosage for supply to the cylinders of the internal combustion engine (ICE) take place. And if the jets become clogged

, there is an obstruction in the fuel system, due to which the carburetor loses its ability to guarantee engine starting. In order to eliminate the defect, the fuel line is repaired, which involves a partial analysis of the carburetor, flushing the pump, and purging the nozzles through the fuel fitting.

If the Neva walk-behind tractor does not start, the reasons may also be different. Sometimes the problem is hidden in a malfunction of the spark plugs, which play an important role in starting a carburetor internal combustion engine, or the glow plugs, which ensure the start of a diesel engine. If the igniter devices become wet, which happens due to fuel assemblies being thrown into them, the spark begins to disappear in them. In the absence of sparking, the fuel-air mixture is not ignited and, therefore, the engine cannot be started.

This problem can be solved in various ways:

• carry out minor repairs and replace non-working spark plugs with new ones;
• “burn” the flooded candles and use a flame to clean them of traces of fuel.

The equipment does not start due to a defect in the glow plugs. In a diesel engine, fuel is ignited by contact with hot air, which is heated in the cylinder when compressed by the piston. This occurs without complications if the unit is already heated and the operating temperature in it is maintained by the heated walls of the cylinder. However, in cool weather, the engine is heated using incandescent devices, and if they break, it will not be possible to start the walk-behind tractor.

If, upon inspection of a carburetor engine or diesel engine, no defective spark plugs were identified, but difficulties persist, and are also accompanied by popping noises in the muffler, it is necessary to check the functionality of absolutely all devices responsible for the flammability of fuel. A defect in them may also be a reason that the walk-behind tractor does not start. It is more correct to carry out diagnostics in a service center, where specialists will find the cause of the damage and carry out professional restoration.

Motor vehicles will not start even if there is a lack of lubricant in the engine. Certain modifications are equipped with special control sensors, which, if there is a lack of lubrication, prevent the engine from starting. Particular attention should be paid to those machine variants that do not have such meters. Sooner or later, the degree of the lubricant mixture will reach its limit value, and if it is not compensated to the norm, this will soon lead to wear of the elements and, as a result, to a major overhaul of the engine.

Failures, their causes and solutions

There may be several reasons why the walk-behind tractor does not start:

• The wire is broken;
• Insufficient fuel level;
• The fuel is not digested;
• Spark plug problems.

If you plan to find the cause of the breakdown yourself and fix it, follow these steps:

1. Check the wires from the power button to the spark plug;
2. The spark plug must be removed. The contact can be cleaned with sandpaper and at the same time checking the distance between the contacts;
3. Secure the candle in place;
4. Blow out the fuel supply system;
5. If necessary, clean the fuel filter. It can become clogged, making it difficult to supply fuel to the combustion chamber.

A few more ways to “revive” your walk-behind tractor:

1. If the starter cord comes out very easily, it may be due to a worn cylinder seal or gasket between the carburetor and an improperly installed filter.
2. If the unit starts spinning but immediately stops, the cause may be poor permeability of the sump. Check the faucet and clean it. The fuel may also contain water, so the fuel must be completely changed.
3. If you hear characteristic noises and flames coming out of the muffler, you need to check the flywheel key. It may be damaged or deformed. This needs to be replaced.
4. If you notice that your walk-behind tractor is intermittently shutting down with a pop-up window, you should check the spark plug. If it is wet, replace it with a new one or clean it. To do this, rinse, think and burn.

Always choose only high-quality fuel and oil for your equipment. Otherwise, you may run into problems before the machine even breaks down. Finding a replacement for a damaged section for a Neva walk-behind tractor is not a problem, but it will cost money.

Source

Technological progress does not affect Bosch and agriculture. For anyone who works with the earth, there is a huge variety of equipment on sale that greatly simplifies the work and protects human health.

Walk-behind tractors are universal machines that can cope with any task - from plowing the land to planting and harvesting. There are a huge number of types on sale, divided by manufacturer, price category, and engine type.

READ What kind of oil to pour into the crankcase of a walk-behind tractor

In this article we will look at a situation where the Nevsky walk-behind tractor does not start for some reason. Over time, you will be able to determine the cause of the failure and quickly resolve it.

Preparing the walk-behind tractor for start-up

Difficulties with starting the engine can appear not only in used walk-behind tractors and cultivators, but also in new ones just purchased at the shopping center. For this reason, before starting a mini-tractor for the first time, you should read its instructions, then carefully examine all connections and, of course, check the oil level in the internal combustion engine.

You should study the annotation compiled by the manufacturer in order to find out what operating speed the engine has: four-stroke or two-stroke. This is important to understand, since modifications with a two-stroke engine (like the Mole cultivator) require a special combustible mixture, consisting of a mixture of fuel and oil in a special proportion.

Due to the mismatch of fuel, the special equipment will make noise, and the spark plugs and fuel line may also be damaged, which can lead to fuel pump failure, and this is a direct path to expensive repairs at a service station. Determine whether the fuel is suitable for the motorcycle

, you can by the smoke that appears. If the quality of the fuel is poor, it will have a white tone, as happens when the car is tilted too much.

Fuel quality is also important for a diesel walk-behind tractor. It does not start in winter - or it starts, but soon freezes - if summer diesel fuel is poured into its engine, since at low temperatures it begins to thicken and clog the fuel line.

The start-up of motor vehicles both in the summer and in the winter must be carried out in the established order. For example, to start a Krot brand motor cultivator, the following procedure is carried out:

• open the gas tap;
• set the suction motor to the “Choke” state;
• turn off the ignition and turn the engine several times with a manual starter;
• start the motor again and move the motor to the “Run” state.

Conditions often appear

when the power device starts easily, but freezes after a couple of seconds. In this case, you should check the permeability of the sump. If the reason is that the tap is clogged, then it is cleaned with gasoline.

Start a motorcycle with a diesel engine

it will be a little more difficult. Starting a diesel engine begins with “de-airing” the fuel path, that is, by ridding it of air accumulations. For this:

• open the fuel supply valve;
• untwist the connections of the outlet channel until fuel appears;
• twist the connections and blow through all the nozzles.

If after the operations the motor does not function properly, and the special equipment begins to smoke, then the reason is the old lubricant, and it must be completely changed. The unit does not start due to insufficient volume of oil fluid, so do not forget to control this parameter.

Starting a motor cultivator after winter

or prolonged downtime also has its own nuances. In order to bring the unit into working position, perform the following manipulations:

• open the gas tap;
• check whether the power is turned on;
• check the presence of lubricant;
• let the gas reach about half way.

Before putting the motorcycle into operation, all connections are checked, including transmission sections, clutch, starting mechanisms, and, if necessary, they are adjusted.

No spark on walk-behind tractor

This malfunction is directly related to a breakdown of the ignition system.
Failures in the ignition system include malfunctions of the magneto, generator, wiring, cap and spark plug. If the spark disappears or is weak, the only reason is the cap and spark plugs. First of all, remove the candle and assess its condition. If necessary, wipe off the soot from it and “fry” it over the fire (if it is not possible to immediately replace it with a new one). Reinstall the spark plug and try to start the walk-behind tractor again. If there is still no spark, check the contact of the cap with the central electrode of the spark plug. The gap between the cap and the electrode is checked with a special probe and should be 0.8 mm.

A few words about how to avoid such situations. First of all, always strictly follow the recommendations specified in the operating instructions. If you adhere to them, your walk-behind tractor will last much longer.

Also, in order to avoid problems with starting the walk-behind tractor, it is important to know what engine cycle this model has (which is also indicated in the instructions). For example, walk-behind tractors from the company Neva (MB-1 and MB-2, which are most often equipped with a Subaru engine), Zubr, Salyut, Agro, Cascade are equipped with a four-stroke engine. Motoblocks from the Mole company have a two-stroke engine. The value of this information for owners is that it indicates how to properly refuel the equipment. For models with a 2-stroke engine, you need to prepare a special combustible mixture, for which gasoline and oil are mixed in a certain proportion. For walk-behind tractors with a 4-stroke engine, oil and gasoline are filled separately. But don’t forget to also monitor their quality!

You should also always remember the correct order for starting your walk-behind tractor. For example, for a Krot walk-behind tractor or any other unit with a gasoline engine, start-up is carried out in the following sequence:

1. Open the gasoline supply tap.
2. Set the fuel suction lever in the “Start” mode (Choke).
3. With the ignition off, the engine is run several times with the kick starter.
4. Start the walk-behind tractor and switch the fuel suction lever to the “Run” position.

With diesel engines of walk-behind tractors Neva, Zubr, Salyut, Cascade or Agro, the situation is a little more complicated. First you need to bleed the air from the fuel system. To do this, you need to open the fuel supply valve, unscrew the fuel hose connections until fuel appears, tighten the connections and blow out the injectors. If, after these manipulations, the walk-behind tractor does not start or does start, but thick white smoke comes out of the muffler, you need to urgently change the oil.

After a long period of inactivity, the diesel engine should be started according to the following algorithm:

1. Open the petrol tap.
2. Check for presence of lubricant.
3. Turn on the ignition.
4. Lightly unscrew the throttle, no more than halfway.

We also invite you to watch a video on how to properly start a walk-behind tractor:

Starting a gasoline and diesel unit

The equipment is equipped with gasoline or diesel engines. Starting a diesel walk-behind tractor

and a gasoline device has differences. For this reason, it is necessary to analyze the factors due to which the unit does not start for each specific type of engine.

Before purchasing a walk-behind tractor

, preparing special equipment. It is necessary to make sure that absolutely all elements are present and to make sure that the mechanisms are securely fastened.

Mechanisms often refuse to work after winter. A long break becomes a prerequisite for the occurrence of problems in the walk-behind tractor systems. Storing in a cool and humid area will cause the following problems:

• oxidation of contacts;
• violation of wiring insulation;
• watering of fuel and oil;
• clogged carburetor jets.

Before launching a new walk-behind tractor

They control absolutely all connections, clutch cable, reverse and gas. Do not turn on the device if there are clamps or twisting of the harness threads.

During the first start-up, be sure to check the oil level in the crankcase. Lack of lubrication will damage the piston group. The crankshaft spins up to 1400 revolutions per minute at idle. It only takes a couple of seconds to create a scuff mark on the cylinder plane.

Old oil can cause the engine to not run. At the same time, the walk-behind tractor emits white exhaust gases. This begs for an absolute oil change.

It should be taken into account that the mini-tractor does not start easily if there is not enough oil. Keep an eye on this setting before

How to start a carburetor and diesel walk-behind tractor. In some modifications, protection is determined by a low level. The device blocks startup and the unit freezes.

It should be remembered that any type of engine requires a specific brand of gasoline. For a two-stroke engine, fuel is prepared separately. The fuel mixture consists of fuel and oil. The number of ingredients is kept in strict balance.

Why the walk-behind tractor does not start - we understand the reasons

Before the start of the season, it is necessary to prepare both gasoline and diesel walk-behind tractors. To do this, the owner of the device must make sure that the design of the device has all the necessary parts for operation, and each of them “sits” tightly in its usual place.

Often, many walk-behind tractors equipped with a Subaru engine or engines of other well-known brands refuse to work after a long winter period of inactivity. At the same time, improper storage conditions for an agricultural machine also affect it - if it was parked in a cold, damp room, it is likely that it will not start before spring work begins. This is due to a number of problems:

• Oxidation of contacts in electrical wiring;
• Violation of the integrity of the wiring insulation;
• Watering oil and fuel;
• Debris accumulation in carburetor injectors.

Before starting the walk-behind tractor, its owner must carefully check all the connections that are provided in the design of the device. It is necessary to check the movement of the gas cables, reverse gear and traction - it should be soft. If during inspection you find clamps or twisted cables, you will not be able to start the walk-behind tractor.

Before starting the walk-behind tractor for the first time, check the oil level inside the crankcase. If there is no oil, it will seriously damage the piston group. Judge for yourself: at a crankshaft speed of 1400 rpm, a second is enough to form several burrs on the surface of the cylinder.

Oil left over for the winter is one of the main reasons for unstable engine operation. To verify that an off-road tractor is bad for this reason, it is quite simple - after starting, white smoke will come out of the vehicle's exhaust pipe for a few seconds, after which the unit will lag. Do not forget that both a diesel engine and a gasoline walk-behind tractor start poorly due to lack of oil. Some unit models are equipped with low level protection; Owners of other cars must independently control the amount of oil inside the tank.

READ How to Start a Mower Properly

Another important factor is the gasoline you use to fuel your walk-behind tractor. If you regularly fill up with the wrong brand of fuel recommended by your vehicle's manufacturer, this may also prevent your vehicle from starting.

Mechanism repair

Starting a diesel engine after purchase can be difficult. The problem is that air gets into the fuel supply system. If cranking for a long time (with the starter) fails to start, it is necessary to release the air plugs. To do this, open the supply valve and unscrew the connections along the channels. The final point of purging is the injectors.

To start the internal combustion engine

, several conditions must be met. Let's list them in order:

• preparation of the mixture;
• delivery of fuel to the cylinder;
• ignition of the mixture;
• release of gases.

Fulfillment of the mentioned conditions ensures the start of any engine.

Difficulty starting

Difficulties during startup indicate a malfunction of components and elements. The success of repair work depends on the accuracy of the diagnostics. If deficiencies are found, they repair the diesel walk-behind tractor. Service and minor repairs can be carried out on your own. You will need a set of keys, a locksmith mechanism and skillful hands.

At the fuel preparation stage, the following incidents are likely:

• a lightweight filter does not let air in;
• the hole in the tank lid is boarded up;
• the fuel supply channel is clogged;
• The carburetor broke down.

After a series of unsuccessful launches

It is advisable to unscrew the spark plug. The working part can be filled with fuel. In this case, we dry the element, then pump the cylinder through the hole. We twist the candle and start it again.

If the candle is dry, it means that fuel is not entering the combustion chamber. Let us perform several operations one by one to restore the supply system:

• drain old gasoline;
• wash the tank;
• clean the special filter from dirt;
• clean the fuel supply hose;
• clean the carburetor jets;
• fill the tank with the cleanest fuel;
• open the tap;
• Clean the breathing channel in the tire.

Ignition system malfunctions

The engine will not start if it breaks down

in the ignition system. Why is this happening? Sources of interruption may be the generator, high-voltage cable, cap and spark plug. An external inspection is necessary to check the cleanliness of the ignition system elements. Dirt and moisture serve as a prerequisite for high force breakdown on the body. A lack of spark occurs when the cap does not make proper contact with the main electrode of the spark plug.

A weak spark indicates poor spark plug performance. The gap and type of electrodes should be checked. The gap is usually checked with a feeler gauge. As a rule, the figure is 0.8 millimeters. If necessary, remove fumes from metal elements and insulators. It is recommended to change the spark plug.

The condition of the piston category elements affects the readiness of the engine as a whole. They operate in difficult circumstances. Under loading, the rubbing surfaces heat up. The cylinder, valve and rings are responsible for a significant indicator - compression. A low compression ratio in the cylinder will indicate replacement of elements.

It is also necessary to check the intake and exhaust valves. They should be close to the saddles. The muffler is the last point on the gas path. Over time, combustion products are deposited in the walls of the muffler, and the engine freezes. For a standard passage of exhaust gases, it is necessary to clean the walls of carbon deposits from time to time.

Buy gasoline for walk-behind tractors at gas stations. The operating period of the machines directly depends on the properties of the fuel. There is no need to start the walk-behind tractor on bad fuel.

In this topic, we will analyze the malfunctions of walk-behind tractors and cultivators of all brands. Neva, Zubr, etc., and their elimination and repair. Most problems are typical for all types of walk-behind tractors, their engines and other components.

Video: Motoblock Neva does not start

Units and mechanisms

Launching a new Neva walk-behind tractor can be very problematic. This is because there is air in the system. If the starter does not turn on, bleed out all the air.

To do this, open the diesel fuel supply valve and unscrew all connections along the fuel channel to the injector itself.

To start the internal combustion engine, follow these steps:

• Prepare the fuel mixture;
• Put fuel into the cylinder;
• Light the mixture;
• Exhaust emissions.

The problem may be with the spark plug. If it is completely wet, there is excess oil. You need to dry the part, bleed the cylinder through the hole and screw the spark plug into place. Then try turning on the walk-behind tractor.

If the spark plug is completely dry, fuel will not enter the ignition chamber. To restore the feed system, do the following:

• Get rid of old gasoline;
• Clean the tank;
• Remove dirt from the filter;
• Clean and unclog fuel hoses;
• Clean the jets in the carburetor;
• Refuel with new gasoline;
• Open the tap;
• Clear your airways while wearing the cap.

Ignition system

Why doesn’t the engine of the Neva walk-behind tractor start? Due to a malfunction in the ignition system. The cause may be a magnet, hood, spark plug or high voltage wire. You must check every detail. If there is dirt or moisture, this could be the root cause of the problem. Everything needs to be cleaned and dried.

READ What Oil to Fill in a Diesel Motoblock Zubr

Another reason is lack of spark. This is due to poor contact between the cap and the center electrode of the plug. The spark plug can also cause a weak spark. Check the gap and condition of the electrodes. You need to remove all burnt parts from all parts and insulation.

The piston system can also fail. The condition of each component must be checked. Heavy loads and friction surfaces are very hot.

Check the intake and exhaust valves to ensure they are seated tightly. The last path to the diagnostic path is the muffler. Combustion products settle on the walls of this part. To avoid engine seizure, periodically clean the muffler passages.

Engine power has dropped

It often happens that a previously serviceable walk-behind tractor, which has served for several years, suddenly loses power.

— If the power has dropped after long-term storage

, perhaps the walk-behind tractor was stored with a wet carburetor and fuel system, which led to deposits. In this case, you can start the engine and let it run, often after these actions the power is restored. If you have the skills, you can disassemble and clean it; if you don’t have the skills, it’s better to contact the service.

— The carburetor may be clogged

. Clean

— Fuel hose is clogged

. Need to blow it out.

— Possible loss of performance of the crankcase cuff

. Remove the casing and gearbox cover and inspect the cuff.

— Carbon deposits on the cylinder, muffler

. Clean.

— The air filter is clogged

. Clean.

— No compression

. Change piston rings, cylinder, piston.

Engine won't start

- If the engine is tilted

, must be placed horizontally.

— Fuel may not be supplied to the carburetor

. The fuel system needs to be disassembled and purged with air.

— The filter may be clogged

. The filter needs to be replaced or cleaned.

— The outlet hole in the gas tank cap may be clogged

. Needs cleaning.

- Perhaps it's the candle

. You need to check the connection of the wires, the engine stop buttons, remove the spark plug and clean it. Replace if necessary.

— Possible magneto failure

. Replace.

The starter squeals, the cord comes out

It may squeal if there is a lot of grease on the balls. You need to clean the balls and the places in the ratchet where they are inserted.

The cultivator made several pops, the speed began to “float”

Most likely, the power system cannot cope, or the fuel level in the tank is low, the float axis may be skewed and debris may have gotten under the needle valve, you need to remove everything and check the air filter and jets.

The material will be updated, we are waiting for comments with questions, stories about identifying a particular malfunction and ways to eliminate it. Also, see the answers to questions about a particular walk-behind tractor model on its description page.

How do walk-behind tractors start?

As you know, walk-behind tractors can be gasoline or diesel. Launching occurs in different ways. Therefore, the reasons why the Neva walk-behind tractor does not start may vary significantly.

Before starting the walk-behind tractor after purchase or after winter, you must check the presence of each part and their condition, the condition of the contacts and wires. It is also necessary to change the oil and add fuel.

Most often, the unit may not start after winter. You must remember that storage in a cold and damp room does not go unnoticed. You will encounter problems such as:

1. Oxidation of contacts; v
2. Clogged jets;
3. Damage to insulation on wires;
4. Damage to fuel and oil.

Be sure to check the oil level before starting. If it is not enough, the piston group may completely fail.