Lifan engine tiller does not start

Re: Recoil to recoil starter How to get rid of?

I don’t understand how the carburetor can provoke a premature explosion in the cylinder?

When the carburetor overflows, gasoline enters the crankcase. The engine is four-stroke and the spark is supplied to the spark plug twice, at each revolution of the crankshaft. Gasoline vapor that got into the oil. explode in the crankcase. That’s the recoil back. Approximately so, the truth is “rude” explanation. Edited by petrovyich51 (Jan 6, 2015 10:55)

Re: Recoil to recoil starter How to get rid of?

How to determine whether the carburetor is overflowing or not and what could be with the camshaft? Please explain in more detail how an excess of the oil level and for gasoline can translate to such an effect? ​​Maybe it can be due to early ignition? The new engine starts well.
Edited by Andrey 12345 (Jan 6, 2015 10:17 am)

9 Reply from Petrovich51 06-01-2015 10:59

• Petrovich51
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• Registered: 07-10-2015
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7 Reply from Andrey 12345 06-01-2015 10:46

• Andrey 12345
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Re: Recoil to recoil starter How to get rid of?

I treated Honda 6.5 with a good blowing of carba with a stink. there was also a recoil in the dryndalka. it seemed that some garbage got under the needle

Re: Recoil to recoil starter How to get rid of?

Andrey 12345 wrote: I don’t understand how the carburetor can provoke a premature explosion in the cylinder? When the carburetor overflows, gasoline enters the crankcase. The engine is four-stroke and the spark is supplied to the spark plug twice, at each revolution of the crankshaft. Gasoline vapor that got into the oil. explode in the crankcase. That’s the recoil back. Approximately so, the truth is “rude” explanation. Edited by petrovyich51 (Today 12:55)

I wonder how gasoline gets into the crankcase through the piston rings or something else?

18 Reply from Andrey 12345 06-01-2015 17:47

• Andrey 12345
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• Registered: 07-10-2015
• Posts: 71

Lifan engine tiller does not start

Home »Articles» Repair »Troubleshooting the engine of tillers

Unfortunately, sooner or later, gardening equipment may fail. Therefore, it is important for its owners to know how to eliminate the appearance of certain malfunctions on their own.

If the tiller does not start?

This problem can occur with both old and new equipment. In this case, you will need to troubleshoot the tiller engine.

One of the possible reasons is the absence of a spark between the electrodes or its breakdown (breakdown). In this case it is necessary to replace the spark plug with a new one.

If there is a spark but the engine will not start, check the spark plug insulation. If the candle is wet, the tip (or rather its insulator) may be faulty. Remove the shield and put in a new tip.

A frequent breakdown of the tiller is pops and the release of flame from the muffler (while the engine does not start). Deformation of the flywheel key may cause this. Replace it by disassembling the starter ratchet. Open the clutch housing, remove the flywheel, remove the old key, install a new one and tighten the housing.

If the starter cord is pulled out without force when starting, the cylinder seal may be worn out or the gasket between the filter and carburetor may be incorrectly installed. To eliminate, replace the seals and check that they are correctly fastened.

The tiller also stalls after winter or after a long period of inactivity. In this case, no gasoline flows into the carburetor. The cause of the malfunction is the locking of the locking needle. Precipitation and tarry formations accumulate around it and prevent it from opening when the engine is started.

Poor quality or inappropriate gasoline can cause engine malfunction. In this case, the spark gets wet and requires replacement of the tip. If you smell an unusual fuel smell, replace it.

If the tiller starts badly and stalls?

After starting, the tiller periodically turns off with the appearance of pops. Make sure the candle is dry. If a conductive substance appears on it, this can cause the absence of a spark between the electrodes. The plug can be replaced with a new one or the old one can be cleaned. To do this, it is washed, blown and ignited.

The engine started for a few seconds and then stalled again. Check the sump for patency. If the tap is clogged, it must be blown out and cleaned (using gasoline). Water can also enter the fuel. In this case, it must be drained and filled with a new one.

Fuel system repair

A breakdown of the fuel system can be asserted if the engine:

• does not start;
• stalls under load;
• overheats;
• does not function stably at idle.

To eliminate the malfunction, first check the condition of all filters, including air and oil. If they are slightly clogged, blow with compressed air or flush; if they have strong contamination, they are replaced with new ones. Then the carburetor is disassembled, the parts are washed with a special cleaner, the fuel mixture supply valve, the tank and the piston system are cleaned with gasoline. After drying, carefully reassemble.

After the engine is completely assembled, the crankshaft is manually rotated. it is important that the piston moves freely and the valves work flawlessly. Then they pour in fresh lubricant, start the engine and leave it to work at idle. Be sure to check the flow of fuel into the cylinder. Perhaps, after such a repair, the cause of the malfunction will be eliminated, and the tiller will begin to function without interruption.

Reasons why the tiller won’t start and how to fix them

There are several reasons why motor vehicles do not start when starting. These include:

• damage to the carburetor (in tillers with a gasoline engine);
• malfunction of ignition / glow devices;
• low lubrication level.

When strange changes appear in the cultivator, and its operation becomes unstable, the carburetor is first checked. In this important unit, a fuel-air mixture (FA) is formed and dosing for feeding it into the cylinders of an internal combustion engine (ICE). And if the jets become clogged, the fuel system becomes obstructed, as a result of which the carburetor loses its ability to start the engine. To eliminate the malfunction, the fuel line is repaired: the carburetor is partially disassembled, the pump is washed and the nozzles are blown through the fuel nozzle.

• make minor repairs and replace the inoperative candle with a new one;
• “Burn through” flooded candles and use fire to clean them of traces of gasoline.

Motorized equipment does not start due to the fact that damage to the glow plugs occurs. In a diesel engine, fuel is ignited by contact with hot air, which is heated in the cylinder by compression by a piston. This happens without any problems when the diesel engine has already warmed up and the operating temperature in it is maintained by the heated cylinder walls. But in cold weather, and especially in winter, the engine is warmed up using incandescent devices and, if they are out of order, it will not be possible to start the tiller.

If, when inspecting a carburetor engine or diesel engine, no defective spark plugs were found, but problems remained, and even accompanied by popping into the muffler, you should check the performance of all devices responsible for the flammability of the fuel. A malfunction in them can also be the reason that the tiller does not start. Diagnostics is best done in a service center, where professionals will find the cause of the damage and competently carry out repairs.

Motorcycles will not start even if the level of lubricant in the engine is insufficient. Some models are equipped with special control sensors, which, in the event of a lack of lubrication, do not allow the engine to start. Particular attention should be paid to those machine variants that do not have such sensors. Sooner or later, the level of the lubricant mixture will reach a critical value and, if it is not replenished to the norm, this will soon lead to wear of parts and, as a result, to overhaul of the engine.

DIY Tiller Repair

Unfortunately, any equipment sometimes fails, so its owner needs to be able to troubleshoot on his own. Of course, if the car is under warranty, it is better to take it to a service center, where specialists will carry out warranty repairs for free.

Often, damage to the cultivator or tiller occurs due to improper operation: poor fuel is poured, heavy loads are allowed, or the loss of lubricating fluid is not replenished in time. Then the car starts to stall, “burrow”, it is bad to gain momentum (especially if there is an electric motor on it), or even stops starting altogether. But, knowing the device of the unit and the principle of operation of its mechanisms, you can yourself identify the cause of the damage and carry out high-quality repairs.

Preparing the tiller for launch

It is necessary to study the instructions drawn up by the manufacturer in order to find out which operating cycle the engine has: four-stroke (like Forte, Centaur, Lifan, Bison) or two-stroke. This is important to know, since for models with a two-stroke engine (like the Mole cultivator), a special combustible mixture is needed, consisting in a certain proportion of gasoline and oil. Due to the mismatch of the fuel, the equipment will stall, and the spark plugs and the fuel line may also suffer, which is fraught with the failure of the fuel pump. and this is already a direct path to expensive repairs at the service station. You can determine whether the fuel is suitable for motor vehicles by smoke. If the quality of gasoline is poor, it will have a white color, as is the case with a strong tilt of the car. If you have bad gasoline, replace it to prevent damage.

Fuel quality is also important for a diesel tiller. It does not start in winter or does, but soon stalls if summer diesel is poured into its engine. At low temperatures, it begins to thicken and clog the fuel line. In such cases, the risk of breakage increases. Choose the right fuel in cold weather.

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

• open the gas tap;
• put the choke lever in the “Choke” position;
• turn off the ignition and turn the engine several times with a manual start-up starter;
• restart the engine and move the lever to the “Run” position.

Situations often arise when the power unit starts easily, but after a few seconds it stalls. In this case, it is necessary to check the permeability of the sump, perhaps the reason is that the tap is clogged. then it is cleaned with gasoline.

Starting a motorcycle with a diesel engine (such as Bison, Cascade, Centaur, Neva) will be somewhat more difficult than Mole. The diesel engine starts up with “airing” the fuel line, that is, with the release of it from air accumulations. For this:

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

Starting a cultivator after winter or a long downtime also has its own nuances. In order to bring the machine into working condition, the following manipulations are performed:

• open the gas tap;
• check if the power is on;
• check for lubrication;
• give gas, up to about half.

And, of course, before starting motor vehicles, be it the Centaur, Cascade, Neva, Patriot or Bison, they check all connections, including transmission units, clutch, starting mechanisms and, if necessary, adjust them.

Ignition system repair

The breakdown of devices for ignition of fuel assemblies can be judged by the signs when the engine:

• starts, but stalls at idle;
• does not start even with good fuel supply;
• works at idle, but with some interruptions.

To find out the reason, first check the condition of the candles and, if there is damage to the insulator, replace them. Next, the electrodes are inspected and, if necessary, the gap between them is adjusted. They check the condition of high-voltage wires for oxidation of the tips and insulation breakdowns. the damaged wires must be replaced with new ones. Without such a repair, the spark may completely disappear or it will go through the insulation, piercing the engine case, and will not be able to ensure the ignition of the fuel assembly.

If at this stage a defect with a spark is not found, then perhaps the reason that the equipment does not start or stalls lies in the generator or coil (for models such as Neva, Cascade, it serves to form a spark). To check the generator, a measuring device is connected to its terminals. The tiller starter pulley is scrolled and the readings of the device are recorded. they should be within 12-16 watts. If the indicators are normal, then the reason is contained in the ignition coil, and after replacing it, you can put a load on the engine. Most likely, after such a repair, its performance will resume completely.

Tiller won’t start: reasons for how to properly repair

Owners of tillers, cultivators, motorized towing vehicles and other mini-vehicles sooner or later face a typical problem. their workhorse will not start or start, but stalls when the air damper is opened, starts “shooting”, gasping or “sneezing”. To eliminate the annoying interference, you need to find out the reason for which it occurs, and then carry out proper repairs. This problem occurs on Chinese, Japanese, Korean-made equipment.

Transmission repair

The following factors indicate a transmission malfunction:

• the working shaft is motionless, and the output shaft rotates;
• the engine speed does not match the speed of the working shaft;
• the engine seems to “choke” from the load.

If at least one of the above reasons manifests itself, they immediately check for the presence of grease in the gearbox. The lubricant in it must be normal, as the lubricant prevents “dry” friction of moving parts and prevents them from overheating.

Then the gearbox is disassembled, the gears are inspected, the chain tension is checked. Whole parts are washed in kerosene, and damaged parts are replaced with new ones. After that, they assemble the structure and make sure that the gears are not skewed.

Before installing the assembled gearbox on the tiller, the shafts are scrolled to make sure that they rotate evenly and without the slightest grinding. The gearbox is filled with fresh lubricant and the motor-cultivator is started. In the absence of a leak under the body, perform simple operations with a rotary tiller or a mounted loader and check the functionality of the tiller. If its working capacity is restored, then all efforts were not in vain, and the repair and maintenance were carried out correctly.

Why the tiller won’t start?

Malfunctions for this problem can be very diverse and refer to different tiller systems. First of all, you need to check the availability of all the necessary spare parts and components, especially if the tiller is new or vice versa. it has not been used for a long time. Before starting, carefully check all fasteners, connections and cables, their course. Make sure that there is oil in the crankcase and that there is sufficient fuel in the tank. Do not start the tiller if the movement of the cables is difficult. this may indicate that the threads of the harnesses are twisted.

After the winter rest, the most common reasons for the failure to start the tiller are oxidized contacts, broken wiring insulation, deterioration in the quality of fuel and oil during downtime.

Also, common reasons that a tiller does not start well include:

• breakdown and / or clogging of the carburetor and its components;
• malfunctions in the ignition system (the most common breakdown);
• low level of lubrication or its complete absence in the gearbox;
• cylinder problems.

Tiller won’t start: the most common reasons, breakdowns

tiller is your reliable and loyal assistant at any time of the year. Even when there is no field work, it is often in demand as a means of transportation. But in the cold season or after a period of winter “rest” it often happens that your tiller does not start well or does not start at all. What are the reasons for this annoying breakdown and how to fix them yourself, we will tell you further.

No spark on the tiller

This malfunction is directly related to the breakdown of the ignition system. Malfunctions in the ignition system include malfunctions of the magneto, generator, wiring, cap and spark plugs. If the spark has disappeared or it is weak, the reason is only in the cap and the candles. First of all, remove the candle, assess its condition. If necessary, wipe off the carbon deposits from it and “fry” it over the fire (if there is no way to instantly replace it with a new one).

Reinstall the spark plug and try restarting the tiller. If there is still no spark, check the contact of the cap with the center 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 stick to them, your tiller will last much longer.

Also, in order to avoid problems with starting the tiller, it is important to know what the engine cycle is for a given model (which is also indicated in the instructions). For example, Neva Tillers (MB-1 and MB-2, which are most often equipped with a Subaru engine), Zubr, Salyut, Agro, Kaskad are equipped with a four-stroke engine. And the Mole tillers 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, a special fuel mixture must be prepared, for which gasoline and oil are mixed in a certain proportion. For tillers with a 4-stroke engine, oil and gasoline are filled separately. But do not forget to also monitor their quality.!

Also, you should always remember the correct order of starting your tiller. For example, for a Mole tiller or any other unit with a gasoline engine, the start-up is carried out in the following sequence:

• Open the gas supply valve.
• Set the fuel choke lever in the “Choke” mode.
• With the ignition off, the engine is worked through by the kick-starter several times.
• Start the tiller and shift the fuel choke lever to the Run position.

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

After a long downtime, the diesel engine should be started according to the following algorithm:

• Open the petrol tap.
• Check for grease.
• Switch on ignition.
• Twist the throttle handle slightly, no more than halfway.

We also suggest that you familiarize yourself with the video on how to properly launch the tiller:

Engine won’t start

Tiller malfunctions

In this thread, we will analyze the malfunctions of tillers and cultivators of all brands, Salute. Neva, Bison, etc., and their removal and repair. Most of the malfunctions are typical for all types of tillers, their engines and other components.

Unstable idle speed

Engine runs intermittently, stalls

Phatmoto Switch back to stock Lifan 152F-3 engine. No upgrade, a retrograde

Smokes tiller

White smoke is pouring out of the tiller, he starts working in the “bucket”.

Engine power dropped

It often happens that a previously serviceable tiller that has served for several years suddenly loses power.

The starter squeals, the cord comes out

The cultivator made several claps, the revolutions began to “float”

The material will be updated, we are waiting for comments with questions, stories about identifying a particular malfunction and how to fix it. Also, see the answers to questions about a particular model of a tiller on the page of its description.