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Hi my son has a yiben motor scooter 50cc model yb50qt-3 year07 when it starts it runs for a few minutes then stalls it has never run dry i have checked the carb and is clean and also blown the fuel pipes out can you help sorry but its not listed on choose a make or choose a model so i just put anything thanks again

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Posted on Jan 02, 2017

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SOURCE: My son's 2005 Kymco TGB 50cc scotter hit a good

Normally, one goes to the carb, one to the gearbox and one to the battery. What sounds really weird is the diameter of the hoses. Three quarter and one inch diameter? Normally 1/4" to 3/8".
Hope this helps!

Please rate this solution. Thanks locjaw69!

Posted on Apr 04, 2009

  • 216 Answers

SOURCE: belt on scooter keeps breakin

Most adults have excellent records of never breaking a belt. Here is the reason why many kids break their belts,--- If you hop a curve, you must let go of the throttle. DO NOT have the throttle on wide open (full open) and hop a curve. If you do when the rear wheel comes off the ground, the rear wheel spins faster. When the scooter lands and the rear wheel hits the ground, you stop the tire from spinning, it will snap the belt. If you do hop a curve, let go of the throttle. When you land give it a little throttle. As you pick up speed then give it full throttle.

Posted on May 14, 2009

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SOURCE: cant get my 50cc scooter to fire up-no spark. any

  • Do you see spark? If not, check the side stand kill switch. It kills the engine so that you don’t start out with the side stand down. If broken or out of adjustment, it would kill the spark. Check for a broken wire at the side stand switch and coupler. Try moving the side stand kill switch by hand. If that doesn’t work then wire a jumper around the switch to bypass it.
  • Is the handlebar kill switch on? Is it shorted out?
  • Check the fuses.
  • Check the operation of the ignition switch and all kill switches with a volt ohmmeter. Check the wiring harness. Did a wire come unplugged? Are all wires clean and with solid connections? Any abraded or pinched wires?
  • Is the bike in neutral and the neutral light is lit up? If no neutral light, check the neutral switch and neutral switch wire on center or side casing.
  • If still no spark, get CDI system and coils checked at the dealers shop.

Posted on Aug 14, 2009

  • 55 Answers

SOURCE: Moped Faster

you could re-jet the carb or put a larger one on but that would mean making your own manifold, and you can open up the pipe to make it less restrictive.

Posted on Sep 11, 2009

  • 26 Answers

SOURCE: ok i have a kingring 4t 50cc scooter and its only

does it still wind out normal? if it has a centrifugal clutch, it could be slipping. check springs in clutch.

Posted on Mar 31, 2010

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I have a 50cc scooter does the engine need to be running for the head lights to work

hi Kevin.
my son has a 50cc kymco plus a 50cc piagio and both of them need the engine running for the head lights to work.
so it could be yours is the same.

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My son has a yiben motro scooter model yb50qt-3 year 07 it starts then stalls i have checked the carb and its clean and also blown the fuel pipes but still happens can you help chris make and model not...

Hi, Chrisandl773 the following applies to carbureted also fuel injected models and the usual suspects are:
1. Severely discharged or a damaged battery, 9 volts or lower.
2. Faulty alternator/generator and or voltage regulator.
3. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
4. Faulty main circuit breaker or ignition switch, check for loose connections and continuity.
5. Faulty system and or ignition relay, check for continuity.
6. Faulty ignition coil, ignition/electronic module.
7. Faulty CKP, CPS, CMP, MAP, TPS, O2, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Water or dirt in the fuel system, carburetor or filter.
9. . Restricted, blocked or kinked fuel line.
10. Fuel tank empty.
11. The gas cap is not venting properly or fuel tank venting system blocked.
12. A faulty Fuel Pump, pressure regulator and or fuel injectors.
13. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
14. Needle and seat stuck closed in the float bowl.
For more information about your issue, please visit the websites below. Good luck and have nice a day.
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Hi I have a Jonway 50cc scooter. the problem i'm having is after starting it (which is a real effort) every time i pull the throttle back i lose power and stall. Note.. I have picked aprilia on the below...

i charged the battery and put it in but nothing comes on when i turn the key I know nothing about scooters I was given this one and am just trying to get it to run.

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Scooter starts but stalls after a few seconds. It has been stored for a few months.

Hi, Anonymous if your bike has been idle for months or years and does not want to start you will have to deal with a few remedies:
1. Drain and flush fuel tank, google " how to clean a motorcycle gas tank" find a couple forums to view the different options available.
2. Remove your air cleaner and clean and re-oil per Mfg. specifications.
3. Remove the carburetor, disassemble and decontaminate with a carb dip or if you have EFI remove injectors and clean with carb spray and compressed air
4. Remove fuel valve and filter disassemble and clean as necessary, remove fuel lines and replace with new ones.
5. Replace spark plug with a new one and check for spark.
For more information about your question please visit the website below. Good luck and have a nice day.2012 Tao Tao 50cc scooter BMW C1 scooter stall at idle after normal start FOUND IT
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Check your batteries, they might be ready to die. Stalling is a sign your are not getting enough power to the scooter and when you do, it runs until they run low again. Kinda like a cell phone batt, ones it dies and you wait awhile you can get it started but only for a couple of minutes before dying again.

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