A failed generator blocks the operation of the entire scooter as a whole, since the entire scooter system is somehow connected to it. If there is a breakdown in the electrical system, a weak spark, or a poor battery charge, in addition to other equipment, a breakdown of the generator cannot be ruled out.
There are not many breakdowns in this case, these are:
Let's consider each of the points in more detail. For example, let’s take one of the Chinese scooters, since it is these devices that are most often subject to such breakdowns. What causes the rotor magnetization to decrease? This phenomenon can be observed due to an impact (for example, during a fall) or being near elements of a high magnetic field. As a result, the output current of the generator drops significantly during operation, and normal operation of the scooter is impossible.
Checking the generator output voltage is quite simple. First, you need to disconnect the generator connectors and connect the control device. After this, we start the engine and check the output voltage of the generator. The minimum voltage should be within 5V at minimum engine speed.
Now we check the output voltage of the switch. To do this, you need a multimeter (tester) with a voltage amplitude reading. We connect all the switch wires to the generator stator wires. Next, disconnect the wire of the switch unit from the terminal of the primary winding of the ignition coil. It remains to connect one terminal to the engine ground, and connect the second terminal to the main wire of the ignition coil, which comes from the switch.
Now we install the will and crank the engine, checking the output voltage of the commutator wire to the ignition coil. We reconnect the switch wire to the coil and determine the average output voltage. It should be about 200V, this is the average value with and without the use of a voltage amplitude meter.
Next, check the condition of the battery. To do this, you need to warm up the engine, then turn off the ignition and connect the tester to the battery terminals. Now we start the engine and check the voltage change depending on the speed of rotation of the engine shaft. You need to carry out the experiment first with the headlights on, then with them off. It should be taken into account that at low engine speeds, the battery voltage readings should be at the level of idle battery without load and recharging. As the speed increases, even at maximum values, the multimeter readings should be within 14-15 volts DC. If the indicators indicated earlier are significantly overestimated, we can talk about a faulty voltage regulator. You can also think about its breakdown if, with an increase in engine speed, the multimeter values remain unchanged.
Important to know:
The normal charging current voltage at the battery terminals with the engine running should be between 13 and 16 volts.
Now let's check the operation of the generator without load. To do this, you need to disconnect the magdino wire connector and, starting the engine, spin it to 5000 rpm. Then use a multimeter in AC mode to measure the voltage between the white-red wire and ground. Typically, voltage readings should fluctuate between 65 V at 5000 rpm. This indicates that the scooter's generator is working properly.
And finally, let's check the stator winding. To do this, first measure the resistance between the white-red wire and ground. The nominal resistance value in this case should be 0.6 - 1.1 Ohm. Now, in the same way, let’s measure the resistance between the white-red wire and ground. Here the average resistance values should be 0.5 - 0.8 Ohms. Deviations of the above indicators in one direction or another may indicate the need to replace the generator winding.
Checking a scooter's generator is a fairly important and sometimes necessary procedure for every owner of this two-wheeled vehicle. Unfortunately, it can be difficult to establish its functionality, especially if you do not have deep knowledge in the field of electrical engineering, as well as the necessary tool - a multimeter tester . If you have such a tool, then before checking the generator you will need to familiarize yourself with the concepts of alternating and direct current, voltage, electrical impulse and tester indicators.
Let's move from words to action
To check the generator on a scooter, you need to remove the plastic around the engine, and then measure the indicators - first of all, the voltage . You need to remove the casing as carefully as possible, otherwise you will damage the fastening system.
Find the place where the bundle of wires comes out of the engine and move along it to the connector - the place where the generator is connected to the scooter’s on-board network. Then you will need to measure the resistance of the circuit that powers the generator coil. Disconnect the wiring from the generator and measure the resistance of the connector wires. In theory, the resistance in the coil should be from 80 to 150 Ohms. If during measurement deviations from these values are found, you should not immediately think about a malfunction.
Try removing the generator from the scooter and measuring the resistance of the coil itself by connecting the tester directly to it. When taking readings from the coil, carefully inspect the condition of its terminals - damage that leads to a decrease in resistance may be the cause.
If during diagnostics you find out that the coil resistance readings are within the normal range, then the cause of the malfunction most likely lies in the wires themselves, coming from the coil or at the output points. Check the wiring and make sure there are no shorts in the wires.
If, as a result of this, no malfunctions were identified, you should also measure the variable resistance at the terminals from the ignition unit. If, after checking the generator on the scooter, you do not find any problems, the reason for the poor operation of the generator lies in the ignition unit.
Common causes of problems with scooter generators
In conclusion, it is worth noting that the failure of a scooter generator is one of the most common problems faced by owners of two-wheeled vehicles. If a malfunction occurs, you may encounter external signs such as a poor battery charge, a weak spark, or some problems with the electrical system. Typically, the reason for the incorrect operation of the generator is:
- Short circuit;
- Wire wear;
- A sharp decrease in the magnetization of the generator rotor, etc.
Before repairing the generator, you must carry out diagnostics and find out the cause of the malfunction, and only then begin repairs or take the device to a workshop.
Ignition circuit elements.
One of the most important electrical circuits in a scooter is the ignition circuit. It includes the CDI ignition module ( 1 ), ignition coil ( 2 ), spark plug ( 3 ).
CDI ignition module.
The CDI ignition module ( 1 ) is made in the form of a small box filled with compound. This makes it difficult to disassemble the CDI unit if it malfunctions. Although the modular design of this unit simplifies the process of replacing it.
There are 5 wires connected to the CDI module. The CDI module itself is located in the bottom of the scooter body near the battery compartment and is secured to the frame with a rubber clamp. Access to the CDI block is made difficult by the fact that it is located in the bottom part and is covered with decorative plastic, which has to be completely removed.
Ignition coil.
Ignition coil ( 2 ). The ignition coil itself is located on the right side of the scooter and is mounted on the frame. It is a kind of plastic barrel with two connectors for connection and a high-voltage wire output that goes to the spark plug.
How to check the scooter generator for serviceability
A failed generator blocks the operation of the entire scooter as a whole, since the entire scooter system is somehow connected to it. If there is a breakdown in the electrical system, a weak spark, or a poor battery charge, in addition to other equipment, a breakdown of the generator cannot be ruled out.
There are not many breakdowns in this case, these are:
Let's consider each of the points in more detail. For example, let's take one of the Chinese scooters, since these devices are most often subject to such breakdowns. What causes the rotor magnetization to decrease? This phenomenon can be observed due to an impact (for example, during a fall) or being near elements of a high magnetic field. As a result, the output current of the generator drops significantly during operation, and normal operation of the scooter is impossible.
Checking the generator output voltage is quite simple. First, you need to disconnect the generator connectors and connect the control device. After this, we start the engine and check the output voltage of the generator. The minimum voltage should be within 5V at minimum engine speed.
Now we check the output voltage of the switch. To do this, you need a multimeter (tester) with a voltage amplitude reading. We connect all the switch wires to the generator stator wires. Next, disconnect the wire of the switch unit from the terminal of the primary winding of the ignition coil. It remains to connect one terminal to the engine ground, and connect the second terminal to the main wire of the ignition coil, which comes from the switch.
Now we install the will and crank the engine, checking the output voltage of the commutator wire to the ignition coil. We reconnect the switch wire to the coil and determine the average output voltage. It should be about 200V, this is the average value with and without the use of a voltage amplitude meter.
Next, check the condition of the battery. To do this, you need to warm up the engine, then turn off the ignition and connect the tester to the battery terminals. Now we start the engine and check the voltage change depending on the speed of rotation of the engine shaft. You need to carry out the experiment first with the headlights on, then with them off. It should be taken into account that at low engine speeds, the battery voltage readings should be at the level of idle battery without load and recharging. As the speed increases, even at maximum values, the multimeter readings should be within 14-15 volts DC. If the indicators indicated earlier are significantly overestimated, we can talk about a faulty voltage regulator. You can also think about its breakdown if, with an increase in engine speed, the multimeter values remain unchanged.
Important to know: The normal charging current voltage at the battery terminals with the engine running should be between 13 and 16 volts.
Now let's check the operation of the generator without load. To do this, you need to disconnect the magdino wire connector and, starting the engine, spin it to 5000 rpm. Then use a multimeter in AC mode to measure the voltage between the white-red wire and ground. Typically, voltage readings should fluctuate between 65 V at 5000 rpm. This indicates that the scooter's generator is working properly.
And finally, let's check the stator winding. To do this, first measure the resistance between the white-red wire and ground. The nominal resistance value in this case should be 0.6 - 1.1 Ohm. Now, in the same way, let’s measure the resistance between the white-red wire and ground. Here the average resistance values should be 0.5 - 0.8 Ohms. Deviations of the above indicators in one direction or another may indicate the need to replace the generator winding.
Good day to all. I have a Chinese scooter 50cc. Mileage 2000. The scooter has been dropped many times successfully) everything is intact, almost only the plastic broke a little. there are morons, they were picking at the cylinder of the moped, they wanted to steal it, starting with the key stopped working, they replaced the guard)) on 10a there was a spare one near the Akum) it started starting with the key. Then the lights went out everywhere, except for the turn signal and the tail light. together with the stop they literally worked for a week, the starter snaps off because there is no voltage, but there is none, the battery is dead, but it starts with a kick, I came to work, I dismantled the plastic, the wiring was intact, I wanted to remove the generator, I couldn’t find a puller ((but I could only unscrew the bolt. After I assembled it, it won’t start Even with the kick it stinks of gasoline, I jerked off the kick, I think it was stupid to do this. Because one boiler is enough to start it! Question: Is there a problem with the generator?
When the generator is connected, voltage appears on the motor housing
Please tell me, I have a Chinese 150cc. The battery has stopped charging and when the light is turned on, the ammeter needle shows discharge. Tell me the reason. Thank you.
Hello! I can’t understand, the spark has disappeared on the 4-stroke engine, what can I do, or rather, how to properly check the generator. I tried everything but I don’t understand, please help.
Identifying problems with moped wiring
alpha moped generator rotors
Horse Motors scooter 056 no light, what to do
I was just driving in the evening with low beam and suddenly it suddenly went out, I switched to high beam and everything was fine) and all at once. The tachometer backlight was also not on. what could this be? I drive without a battery, but everything worked fine)
Somewhere the contact was lost!
Electrics is the science of contacts. The absence of where one should be and the presence of where one should not be.
I had a problem where the near one disappeared and the far one was there. At home I pulled out the light bulb and there the spiral of the near one simply fell off and everything was fine on the far one. I advise you to check the light bulb first, maybe the same problem and at the same time check the contacts there)
On Chinese scooters the weak point is the buttons on the steering wheel. They are sold as a set for the entire steering wheel. Buy yourself a couple of sets, they will come in handy around the house. Then you take a tester and follow the circuit from the light bulb, and of course you can look into the circuit.
Familiar. A couple of days ago, all my light disappeared, on a hummock - in one fell swoop, and even in the dead of night. It was a lot of fun coming home and catching all the holes. The next day I attacked the scooter, gutted all the electrics, even unwound the power harnesses, calling everything and everyone with a tester. Then it turned out that only one connector on the generator had come loose. Well, there were swear words. The connector appeared to be closed, but in fact it was slightly loose. That's all. Start with something simple - contacts, then lamps, and only then check the wiring and look for a break. Otherwise you will repeat my mistake.
Horse Motors scooter 056 no light, what to do
24 Dec 2010, 16:44
Re: all the lights on the scooter don't work
24 Dec 2010, 17:00
Ural Phantom => Honda Steed 600 => Suzuki Intruder Volusia Vl800 (Boulevard C50) => YAMAHA FJR 1300 => Pedestrian =o_O= => YAMAHA FJR1300 => +HONDA XR250 BAJA => HONDA CRF250X => HONDA CBR1100XX SuperBlackbird => Honda GOLD WING
YouTube channel: https://www.youtube.com/c/MotoZevsRU Enduro: vk.com/stavenduro FJR1300: vk.com/fjrclub
Re: all the lights on the scooter don't work
24 Dec 2010, 17:38
Re: all the lights on the scooter don't work
24 Dec 2010, 21:48
Re: all the lights on the scooter don't work
24 Dec 2010, 21:51
To each his own. &-92&-63о-о3-47 It’s not love that saves, but sex and rock and roll! (c) GZ
repair of foreign-made motor vehicles, welding, turning, drinking works.
Re: all the lights on the scooter don't work
24 Dec 2010, 23:00
floating defect is the most difficult. Keep track of the green wire. Where it comes from and where it goes. Where did it burn out? It is possible that the insulation is broken and it is he who is shorting. At a minimum, you need to change the melted wire.
If it floats in the middle, then you need to look at what it might touch. Maybe it frayed and began to short-circuit the frame.
Of course, this is unlikely to be true for scooters, but usually the wires melt due to an incorrect electrical circuit.
Well, a test for the completely unlikely. Check if the connections are made of the same metal.
come to the station, let's dig deeper
Ural Phantom => Honda Steed 600 => Suzuki Intruder Volusia Vl800 (Boulevard C50) => YAMAHA FJR 1300 => Pedestrian =o_O= => YAMAHA FJR1300 => +HONDA XR250 BAJA => HONDA CRF250X => HONDA CBR1100XX SuperBlackbird => Honda GOLD WING
YouTube channel: https://www.youtube.com/c/MotoZevsRU Enduro: vk.com/stavenduro FJR1300: vk.com/fjrclub
Re: all the lights on the scooter don't work
25 Dec 2010, 23:00
Re: all the lights on the scooter don't work
26 Dec 2010, 19:50
Re: all the lights on the scooter don't work
27 Dec 2010, 01:20
Re: all the lights on the scooter don't work
27 Dec 2010, 08:20
Re: all the lights on the scooter don't work
20 May 2011, 13:12
Re: all the lights on the scooter don't work
20 May 2011, 19:12
Re: all the lights on the scooter don't work
26 May 2011, 14:48
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Scooter rider
A light on a scooter is one thing that is not necessary, but without it it is very difficult. Especially at night without light it is a disaster. But if the headlight on a scooter doesn’t work, that’s one thing, but if neither the headlight nor the turn signals nor the brake light works, then that’s another matter. An emergency situation is created here, especially in the city. Today we will find out why the light on the scooter does not work. And so, why the light on the scooter does not work. The light bypasses the voltage regulator , since it greatly reduces the output power.
If the low beam, high beam and dimensions are missing, then you need to check the headlight-toggle switch-generator wiring. The problem may even be through the connector for the license plate light bulb. If the contacts do not fit well, it may short out. Check that the wires leading to the solenoid valve are not shorted. If you ride a scooter without
a battery , this can also lead to negative consequences and may result in the light on the scooter going out .
This is due to the fact that the battery takes on voltage fluctuations. Therefore, without it, turn signals and signal may not work well. Or the headlight bulbs, brake lights, and turn signals completely burn out. This may cause the lights on the scooter to go out. If you do not drive without a battery, then to find out why the lights on the scooter went out, you can use the wiring diagram:
When the light on the scooter goes out, you first need to check the wiring. Perhaps something has become disconnected or burned out somewhere. This will be visible immediately.
If only the headlight does not work, then you need to pay attention to the generator, wires, and connectors. And of course, check the light bulb itself and whether there is voltage going to it. a short circuit somewhere in the wires and they simply burned out. In this case, simply replacing these wires will help. The generator is responsible for the headlight . Check its functionality, it may be broken.
Thus, the reason that
the light on your scooter has disappeared may be hidden in the above. By checking the details mentioned in the article, you will find the reason why there is no light on the scooter.
