No doubt, contacting the service center is the right decision. But when time is running out, it is worth asking which problems occur more often. You can compare manifestations according to the description, roll up your sleeves and repair the Neva MB-2 walk-behind tractor with your own hands.
Compact analogue of a mini-tractor
The unit, in addition to agricultural operations for plowing, cultivation, cutting furrows, digging root crops, hilling, watering, copes with mowing, snow removal, sweeping with a brush, and transportation.
Advantages of the Neva MB-2 walk-behind tractor:
- On domestic market - over 30 years.
- Subaru EX21 engine- 5.5 kW.
- Tillage depth- 0.3 m.
- Frontal coverage- 0.85-1.2 m.
Practice shows that half of the cases of failures and breakdowns are not related to natural wear and tear, but with improper tuning, adjustment, running-in and maintenance of the engine and gearbox.
The device of the Neva MB-2 walk-behind tractor
Adjusting the clutch belt on the "Neva MB 2" walk-behind tractor
Sometimes the belt comes off the pulley, slippage, replacement after a break. The instruction prescribes the dismantling of the compensation roller. Possible option:
- We loosen the bolt fastening of the engine to the frame.
- Pull the motor towards you - tension, reverse movement - weakening.
- Determine the amount of deflection by pressing. The optimum is 10 mm.
Tensioning the belt of the Neva MB-2 walk-behind tractor
Setting up the plow of the Neva MB-2 walk-behind tractor
The plow is attached to the frame from the back with an adapter or a hitch. The lugs with supports without a roll rise to the plowing depth. A vertical stand is exposed. It stays upright when the board is in contact with the ground for a 30mm heel lift.
Adjusting the angle of the soil dump: a shoe is placed under the left lug, the plow stand is transferred to a vertical position. Tightened the connections, done. Handle guides are positioned at waist level - reducing stress on arms and shoulders.
Plow for the Neva MB-2 walk-behind tractor
Can't start the walk-behind tractor
A real do-it-yourself walk-behind tractor repair begins. The clutch lever is released, the transmission is disengaged. The diagnostic sequence is as follows.
Checking the engine stroke with the starter cable. Free cranking is a breakdown signal in the mechanical part of the engine. Abnormal sounds, rattling will confirm that the problem is in the connecting rod, camshaft, valve group. It is advisable to repair the engine of the walk-behind tractor in service center... If you carry the walk-behind tractor on its side, repeat the start without a spark plug - the reason could be the ingress of crankcase oil into the combustion chamber.
Gearbox repair
If the engine is running, but the gearbox does not rotate, check the keys and the cutter stopper.
The situation is complicated when the gears are spontaneously turned off, noises appear or the gearbox does not rotate, the engine stalls. Then repair of the Neva-MB-2 walk-behind tractor is required in the workshop.
SOLUTION
1. Why? It's not so much the same pirates. (I did not use the license), how much is that there is some kind of jamb in the game itself, which is true not for everyone, but for very many. A certain amount of memory is allocated (regardless of the RAM of your computer) and at a certain stage, textures are loaded and part of the level is overloaded. In the first part, this was also the case. In principle, for the most part, this was not noticeably manifested in the disappearance of textures for 1/2 second, and a slight slowdown of the game for 1 second. Naturally, on game process it had no effect. But, in the second part, during this texture overload, the game crashed.
2. What to do? There is a solution. Lower graphics. It is imperative to remove global illumination.
I personally did that.
1. Lowered the resolution to 1024X768
2. Removed frontal lighting and real-time reflections
3. The rest to the maximum.
Of course, the graphics have become a little worse, but we are not grapheme with you at the end of the day, but the main thing is that now you can play this wonderful game at least somehow normally and without any nerve-damaging crashes.
Another problem is that it doesn't save. Solution http://www.playground.ru/cheats/bioshock/ from here I downloaded the bioshock savegames, did everything as it was written in the instructions, and the game began to be saved normally. You can use the author's save, or you can go through the game yourself, the latter is preferable, the main thing is that the save began to work perfectly.
Now I play this game - normal flight, not a single departure.
Hope helped someone.
Tags: Why does the second speed take off on the Neva walk-behind tractor?
Description.
Feb 9, 2011 - there is a Neva with an imported engine. there are no problems with the engine, but here ... Now the 2nd gear flies out, maybe the first one flies out, did not go ...
the second speed of the neva2b walk-behind tractor takes off | Topic author: Yuri
Victor On the first gas to the stop and into his ravine!
Oleg throw out this gearbox and put a hydraulic motor with a pump
Egor) disassemble the bridge, most likely the shift fork spring has become inelastic
Vitaly You are daring on it!
Motoblock (urgently) (p. 2) / Smoking room - FFClub
Apr 19, 2013 - What is required, 5 to 7hp with reverse speed at a price of no more than 25tr. .... pliz, when you reverse the speed do not fly out? I sometimes have 2 on my oce .... Compare the cutters from the imported walk-behind tractor and from our Neva. On...
walk-behind tractor neva-2 about gearbox | Fermer.Ru - Farmer.Ru - Chief ...
Apr 8, 2010 - To my Neva-2 motoblock with a DM-1k engine (6.2 hp .... I have a Favorite motoblock and such a problem. again there is a ringing.
Question: I use the Neva MB-2 walk-behind tractor with a Subaru engine. Starts well, new candle. You start to give a load - to press the lever on the handle, as the engine starts to stall, does not pull as it were. The floor of the garden was plowed normally, but the other half I can't, I barely drove it into the garage,
he can hardly pull himself, does not sneeze, does not puff, but stays stably so.
Answer: Check how easy the thrust moves from the lever on the crankcase to throttle carburetor. It's simple on these engines - you can see everything. There is only one traction. On idle engine she should walk completely freely, without the slightest jamming. And come back
spring. Second, try replacing gasoline with another one. Even from a completely different gas station.
Question: Please tell me which drive belt it is better to put on a Neva MB-2 walk-behind tractor with a Honda engine. And is it possible to put a non-factory one. I read somewhere that they put a generator belt from front wheel drive... Will it fit?
Answer: Select by parameters. The size of the native belt on MB is 1180. Profile A.
Question: I operate the Neva MB-2s 7.5 pro walk-behind tractor with the Robin Subaru ex21 engine (7 hp). I bought it last year, assembled it and put it in the garage for the winter, didn't start it. Yesterday I decided to try and it didn't work, I poured gasoline, there was compression, there was a spark, the candle was poured, and it did not start. Today I changed the gasoline to a fresher one, there is no sense, the compression and spark have disappeared, the candle is flooded. What could be zero? Is the factory candlestick bad?
Answer: Did you forget to pour oil into the engine? Apparently you have insufficient level oil, therefore the ignition lock sensor is activated. The oil is not poured using the dipstick, but the amount indicated in the operating instructions. Normal oil level is when
it reaches the upper thread filler neck... It should even undermine when you unscrew the plug with the dipstick. The walk-behind tractor should naturally stand strictly horizontally relative to the surface.
Question: Tell me, what checks and adjustments need to be made 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 some time delay, so that the oil glass if the engine was not level before).
- check if fuel is supplied by opening the fuel supply valve.
- check the gasoline in the carburetor by unscrewing the sump under the carburetor.
- check the plug as standard for auto-moto (dry, wet, smoked, gap, etc.).
- verify air filter for the absence of contamination.
- check whether the air damper opens and closes with the start lever (in the same place as the fuel cock).
- check if the on-off switch closes. ignition.
- check the throttle cable - does it walk freely? whether there are any bends or pinches, whether there is rust inside.
- check by hand the stroke of the throttle cable with the throttle knob (the starting stroke may be adjusted incorrectly - try to open it as much as possible to start, there is a larger or smaller drawing near the knob).
- check the fastening of the cable near the carburetor - whether the body of the cable is tightened with a clamping bracket, is it overtightened, the cable itself (thin steel wire) is clamped with a screw under the cross (for me) in a through nut, you can temporarily tighten the knob of the flaps near the carburetor to start,
check if there are springs in place that return everything to "0".
- Do not pour fuel into the tank completely at the first start - let it be a little, or remove the filler cap.
- start with the starter smoothly, but strongly, pull the handle - as you feel the hook - only then a jerk.
Question: help with such a problem - the Neva MB-2 walk-behind tractor, the Honda GC-190 engine started working only on high revs as I understand it, the gas regulator does not work.
Answer: The regulator, after all, it never fails by itself, it is too primitive, there is nothing to break. There must always be an external reason. Such cases are possible: Subaru engine. The regulator does not work - the engine rotates at only one speed, there is no
reacts, under load reduces the speed. The reason is the roller coming out of the engine (on which there is a long lever) "stuck" in its hole. It was cured by disconnecting the long rod from the carburetor and turning it manually several dozen times from the extreme to the extreme position until it began to work freely. The engine is an analogue of 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, jammed. He took off the damper, pulled out the axle, washed it, blew it out, 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 was stretched. Is it like that for everyone? or marriage. Maybe due to the fact that the belt is stretched? By the way, tell me what is the size of the belt? and how fast can it stretch? I did not immediately notice on
by stretching the belt. and then they tried to tighten the cable and the spring burst (they were hooked onto the turns, since it was stretched) Or maybe the belt was actually stretched to the limit? And the 2nd speed therefore did not pull on plowing? (pulleys at low speed).
Answer: Belt А1180. Don't go cheap. There is a bitter experience. They stretch out, overheat, twist, and eventually tear.
Question: In operation, the Neva MB-2s motoblock 6.5 s Subaru engine EX 21. During operation, I changed the oil in the engine (it was black) and in the gearbox. I managed to plow a vegetable garden a little. Then I decided to mow the plot with a rotary mower. Everything was good at first, however, at a certain moment
noticed that since exhaust pipe black soot went and the engine started to keep the revs unevenly. He stopped, turned off the engine, but when turned off, it did not stop working immediately, but for some time it detonated and fired. I thought maybe some kind of low-quality fuel. I started it over and started mowing again, but the black smoke continued to go anyway. The engine ran for about a minute more and suddenly it knocked down White smoke and the walk-behind tractor began to stall and suffocate. I turned it off immediately. He took off the rotary mower and rolled in neutral to the house, put it to cool down. After about an hour and a half, he started up again. On low revs works fine, keeps the speed evenly. does not smoke, but it is only necessary to add a little gas (no load), first it begins to vibrate more strongly, starts smoking again and the revolutions jump. Tell the wizard how to fix or get rid of this problem?
Answer: First, the air filter (you can start the sample without it), a candle, then rinsing and purging the carburetor. If you changed the oil, then it is possible:
1.poured - place MB2 on a level surface so that the engine sole is horizontal, wait a little and check the oil level on the dipstick.
2. It is quite possible during operation to tilt to the sides on irregularities - then the oil will "throw".
3. Check the engine idle speed adjustment, on level ground after warming up. that is, the release of the "gas" and its set is at the end of the cable that is clamped near the carburetor. I have it adjusted so that idling does not turn off the engine, otherwise you never know what. That is, dropping the "gas" to "0" will not stall for me.
Question: Not at all new walk-behind tractor Neva MB-2s 7.5 pro with a Subaru engine, when milling, the cutters almost do not spin (under difficult conditions) and the sound is unpleasant. I think there is a fault in the belt (probably stretched out). The belt looks like new, can I tighten it? There is nowhere on the clutch handle
regulate. Maybe some other malfunction?
Answer: the same thing happened with me, if it is urgent and temporary, then you can shift the motor platform relative to the frame to the next holes, that is, those that are closer to you, if you look at the walk-behind tractor. But most likely, you will also need to adjust the motor itself along the platform, and this is very difficult, since you do not need to crawl in with an ordinary wrench or a head, and to slip in a tubular one, you need to pull the motor off the platform from the MB-2 frame.
Question: I chose from motor-cultivators for a long time, but I bought a Neva MB-2s 6.5 walk-behind tractor with a Subaru EX-17D engine. Please tell me if you need to change before starting operation factory oil for a new one?
Answer: The plant does not fill the engines with the worst oil - do not drain, work on it. About working on Idling- would not recommend. All Robin engines at the plant undergo final control, which includes start-up and some operating time. That is, as if for a start
the engine has already spun a little. Then the oil is poured - and onto the packaging. Engines for Neva MB-2 walk-behind tractors come to the manufacturing plant without oil, after installing them on the walk-behind tractor, they are filled with oil, started up and put on the stand. For the first period of the walk-behind tractor: I think it's better
just start the engine, warm it up a little and start working. Only the best on full throttle do not work and do not overload the walk-behind tractor - do not put additional cutters, do not cultivate virgin soil in second gear. And do not forget to replace the oil with fresh oil no later than 20 hours later (This is for Subaru).
Question: Tell me how to cut the beds for planting potatoes? Motoblock Neva MB-2. Honda engine. Fast in the field. In operation for one year. Is it possible with a hiller, or is there a special plow?
Answer: The plow, most likely, will not work. The walk-behind tractor with the right wheel goes along the cut furrow, but if there are already potatoes laid out there? I don't know how where, but here they cut furrows with a hiller. Then you can fill them with the same hiller, but this already needs to be done as carefully as possible - you need wheels
guide along the ridges so as not to fall into the furrows with the potatoes and not crush them. Usually, not very large areas are cut with a hiller, and covered with a rake.
Question: When servicing the Neva MB-2b 6.5 pro walk-behind tractor in the gearbox through the plug (breather), I do not visually see oil. I read in the instructions that there should be 2.2 liters. I thought I would see it through this plug (by analogy with the engine). But, as I already wrote, it is invisible. The question is: is this how it should be?
Answer: Plug on the side of the gearbox. Visually, too, there was no oil visible. I felt it with a wire. 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 in the control when the level becomes normal. The walk-behind tractor must of course stand horizontally.
Question: Is it possible to fill the Neva MB-2b 5.5 motor block with Subaru motor oil bought in auto parts semi-synthetics 10w30?
Answer: Of course, it is possible if it corresponds to the API category - SF, SG, SH, SJ and above. The instructions for the engine should contain recommendations for the use of oils, depending on the ambient temperature. 10w30-all-season.
Question: yesterday I worked the land with milling cutters. Neva MB-2k 7.5 with a Honda engine, I was very upset by the gear change, sometimes I have to podgazovat something to stick in (which can be done, I don't really want to drag it to the city). Tell me about how to properly milling (how much
open throttle and which gear)?
Answer: do not add gas. There are no synchronizers in the box. And for normal engagement, you need to slightly wiggle the pulley and stick in the gear. In the instructions this moment there is. The gears in the gearbox can fly away from the rotation - it is generally forbidden to switch on the go.
Question: When operating the Neva MB-2k 7.5 walk-behind tractor with a Brigss & Stratton engine, a malfunction occurred. Does not pull when plowing. An acquaintance looked and said that he would not tighten the belt. The adjustment on the knob did not have the desired effect. He moved the platform with the engine forward to the outermost holes. It does not idle, as it should be. Would like to adjust to the maximum before plowing. In this connection, the questions: Have I done the right thing so far, that I have moved forward? Are there any other ways to adjust (other than on the handle and pad offset). Which of the three positions is the best for the belt on the drive pulley, and which of the two positions is the large one? (as I understand, the thrust 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 only adjustable on the handle. Most likely, the cable spring is stretched. Alternatively, buy a new cable. Yes, you understand correctly when the speed increases, the thrust disappears.
Question: Advise the 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 case, which does not correspond to reality. Did you like Brigss & Stratton engines, how reliable are they in terms of fuel consumption?
Answer: Today I just put my walk-behind tractor with a Brigg Stratton engine into operation. Reality met my wishes, very satisfied. In terms of reliability and consumption, I will not say anything yet, but when I chose a plus in comparison with a subarik, it became what they say about unpretentiousness to fuel (of course, everything is relative, but still).
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The motor-cultivator gearbox is a part necessary to transmit the rotation of the torque to the wheels and attachments.
Operation and maintenance Neva-MB-2
So that there are no failures in the operation of the MB-1 and MB-2K mini tractors, you should follow all the recommendations for the operation and maintenance of equipment prescribed in the instructions:
- It is necessary to tune the engine. To do this, you will need to study the device of this part, choose the right oil liquid for servicing the engine, spark plugs and fuel.
- Tune and adjust the gearbox and transmission. The serviceability of these parts must be checked every day before starting work.
- Install optional equipment only in accordance with the owner's manual.
- Observe the maintenance schedule (points 1 and 2) and seasonal service(before summer and winter periods).
Changing the engine oil
The procedure for changing the oil in the engine:
- Install vehicle on a flat surface.
- Let the engine cool down. This will help measure the level of the filled oil.
- Clean the area around the dipstick on the left side of the engine.
- Fill with oil up to the maximum mark (recommended oil - TAD-17I, TAP-15V).
- To determine the level to which the fuel fluid has been filled, you need to use the dipsticks. To do this, you need to take a dry dipstick plug and insert it into the oil fill connector. The remaining trace can be used to determine to what level the liquid was poured.
- With excess oil liquid a leak begins, which can lead to malfunctions in the operation of the walk-behind tractor.
First start-up and running-in
Running in is necessary so that all parts can rub in. After working for a short period of time at minimum level load, in the future the walk-behind tractor will fail less often.
- The running-in process must be at least the time specified in the operating instructions.
- Loads should be light. For example, if in technical characteristics it is indicated that the maximum depth of tillage is 50 cm, then during the first start and running in it is recommended to limit it to 30 cm.
- Fill the engine with oil before running in.
Running-in procedure:
- Fill up the fuel tank.
- Start the machine at medium speed.
- It is necessary to check the operation of all gears within 60 minutes.
- To carry out a small amount of work on cultivation, plowing of soil and transportation of small-sized cargo.
Major malfunctions
The reason for repairing the Neva MB-2 walk-behind tractor can be:
- incorrectly adjusted valve belt;
- gearbox oil seals;
- incorrect tuning of the carburetor system;
- not exposed ignition;
- malfunctions with candles.
Belt adjustment and dimensions
Kli new belt on the walk-behind tractor helps the unit to move forward and backward. When the drive belt comes off, the equipment ceases to function correctly.
In order to determine the size of this part, it is necessary to measure the gap from the pulley to the rollers. Recommended belt parameters: width - 0.85 cm, height - 0.6 cm.
To tighten the belt, you need to do the following manipulations:
- Remove the cover.
- Loosen the tensioning screw of the standard belt part.
- Move aside all the screws that hold the bracket to the walk-behind tractor body.
- Pull out old part and adjust the pulleys.
- Wipe the place between the parts and blow out the rods.
- Install a new belt, one end of which should be connected to the shaft and the other to the pulley.
Replacing the gearbox oil seals
Malfunctioning oil seals can cause damage to the gearbox. Therefore, repairing the gearbox of the Neva walk-behind tractor may include the following actions:
- Removing the cutters from the shaft.
- Cleaning the shaft and cover from dirt and oil residues. Remove all screws from the cover and wash them.
- Replace the old part with a new one and wipe the entire mechanism dry.
- Replace the cover and secure with the bolts.
In some cases, it is necessary to disassemble the gearbox:
- Remove the knob from the gear shift knob.
- Remove the bushing and spring from the shaft.
- Remove all screws and clamping bolts.
- Using a thin screwdriver or knife, remove the right half of this part.
- The removed parts must be washed, and the defective parts must be replaced.
- The assembly of the reducer is carried out in the reverse order.
Before adjusting the carburetor, adjust the centrifugal regulator according to the user's manual.
Setting procedure:
- Tighten bolts at idle and full throttle to maximum and then back out 1.5 turns.
- Install the throttle type damper so that a gap of the corresponding parameters appears between the base and the air duct.
- Try to start the engine. If it starts up, you need to wait until it warms up.
- Set the control handle to minimum speed.
- Perform minimum idle speed with the throttle valve screw.
- Set the RPM to maximum using the idle screw.
- Repeat the last 2 steps until the motor starts running smoothly.
- Set the control handle to gas.
Adjustment of valves
The valves on the Neva walk-behind tractor are adjusted as follows:
- Install the unit on a flat surface.
- Start the engine and then let it cool down.
- Remove the cover.
- Remove the cover from the valves to provide access to the parts under it.
- Unscrew the lock nut.
- Carry out the adjustment. It is necessary to loosen the nuts, insert the dipstick, adjust the valves.
- Screw the valve nut back into place.
- A razor blade (no more than 0.2 mm thick) is inserted into the resulting gap. It should pass freely between the piston part and the valves of the walk-behind tractor.
- Screw all the details back.
The size of the gap formed can be checked with a feeler gauge, which should pass under the valve if the cut is made correctly.
Checking and adjusting the clutch
Clutch check:
- When the clutch handle is in the off position, the cable should be slackened. Tension roller moves to the lower position and comes into contact with the drive-type belt.
- When the handle is in the on position, the cable tightens the roller and the bottom of the belt is pressed tightly against it. The small pulley transfers the momentum to the large pulley, thereby transferring power.
Adjustment procedure:
- If knocks out 2nd gear with the clutch handle engaged. It needs to be translated into correct position... To do this, place V-belts in parallel on 2 sides of the motor pulley.
- If 2nd gear takes off when the clutch handle is disengaged. It is necessary to constantly monitor the position of the V-type belts, they must be parallel to each other.
How to set the ignition
The procedure for adjusting the ignition of the walk-behind tractor:
- Turn crankshaft so that the marks made on the pulley and gas equipment unit coincided.
- The slider, which is responsible for the distribution of gas flows, must be directed to the high-voltage wire of the cylindrical part.
- Loosen the nut and remove high voltage wire from the cover of this system.
- Place the contacts at a distance of 0.5 cm from the equipment.
- Turn the ignition.
- Turn the mechanical structure in the opposite direction.
- After the spark appears, quickly tighten the screw.
Candle malfunctions
- Unscrew the candle element.
- Clean the electrodes.
- Get rid of carbon deposits.
- Turn the crankshaft to the position where the marks of the pulley and the gas device match.
- Aim the slider at the high voltage surface of the cylinder.
- Loosen the screw and take out the wire.
- Turn the ignition key. If there is no spark, then the spark plugs are defective and should be replaced. Before installing a new element, you need to make sure that there is no sealing washer from the previous part in the cylinder head.
It is also necessary to check the parameters of the gap between the electrodes of the spark plugs:
Why won't it start, shoot, smoke, and what to do about it
If the engine does not start, the reason may be one of the following:
- There is no spark. In this case, it is recommended to pull out the candle element and insert it into a special candlestick, and place the body on the cylinder. After that, you need to start the engine. If the spark does not appear, it is recommended to replace the spark plug.
- Fuel does not reach the engine. It is necessary to inspect and blow out the hose that connects the carburetor and the faucet. If necessary, you can disassemble the carburetor and rinse it from the inside with A-95 gasoline.
If the cultivator smokes when idling, you need to:
- Inspect and clean the air filter.
- Check the oil level. Drain off excess if necessary.
If the engine fires, the reason for this may be the tension in the working spring. In case of malfunction, it should be adjusted.
How to install a generator
In order to install an electric generator, you must do the following:
- The generator has 4 wires, 2 of which are of blue color... An energy converter must be connected to these 2 wires.
- The black wire should be connected to the motor.
- Connect the remaining red wire to the parts responsible for external lighting and sound signal.
The generator generates electrical energy that is fed to the rectifier. When starting the engine, the adjusted belt transmits the torque to the rotor part of the unit. In the electrical unit, a voltage is generated, from which the battery of the walk-behind tractor works.
The power of the selected generator should not exceed 220 V. It is recommended to choose a spare part, the power of which will correspond to the expected load.
The gearbox has 5 positions. When the user pushes the gear lever, the fork disengages the clutch from the engagement position. When the user drops the handle, it returns to its original position.
To this mechanism functioned properly, you must not do sharp movements and clean all parts from contamination in time.
The gearbox is responsible for transmitting torque from the engine to the wheels and additional equipment... In order to avoid disruptions during work, you need to carry out Maintenance motor.
