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Will not turn over Hyosung Hyper GP 125

Hyosung hyper gp 125 was starting now won't Recently bought this, it started up fine when I got it and when we got it home 4 days later tried to start it up and no joy, it sounds like it wants to start but just won't go the whole way! charged the battery and no joy also had jump leads on any ideas would be great thanks in advance @

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  • heidiyoung26
    heidiyoung26 Oct 23, 2012

    sorry forgot to add all lights and horn working fine

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  • Hyosung Master
  • 57,616 Answers

Hi, Heidiyoung26 before testing any electrical component in the Starting Circuit it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage, the battery is faulty and must be replaced. AGM type batteries fall into this scenario more so than lead-acid batteries.
1. Ignition Switch not in the "ON" position.
2. Engine Run Switch in the "OFF" position.
3. Engine Run Switch is "FAULTY" or corroded.
4. Check the 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.
5. Bank angle sensor needs a reset or is faulty.
6. FOB battery low or dead.
7. Faulty ignition switch.
8. Faulty starter button.
9. Faulty kickstand, clutch, neutral safety switch.
10. Security alarm needs a reset.
11. Starter relay, solenoid, starter motor or circuit wiring faulty.
12. Starter armature or field coils have failed.
13. Main fuse or circuit breaker may be blown or faulty.
14. Faulty ignition relay.
15. The electric starter is working but starter clutch has failed.
16. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
What To Do If Your Motorcycle Doesn Start
3 Things to Look for When Your Motorcycle Won Start The Allstate Blog
http://www.banici.pl/bam/Tom/GV125/Instrukcje/GV125_SERVICE_MANUAL_EN.pdf
https://alpha-sports.com/hyosung_parts.htm
http://www.family-motorsports.net/GY6-50cc-150cc.pdf
https://absolutelyscooters.net/pdf/CGEN_dawg_scooter_manual.pdf

Posted on Jun 22, 2019

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6ya6ya
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Posted on Jan 02, 2017

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  • 101 Answers

SOURCE: bike cranks and wont start

Hi .... Sounds like regulator/rectifier is defective. Fully charge battery and try starting again, place multi-meter across battery and it should show 12.8-14 volts. If it doesn't replace reg/rec unit.

Posted on Jan 04, 2009

  • 6 Answers

SOURCE: burgman 250 will not start

Ck fuses and wire connections first. If no problem seen, get bike running and disconnect the ground cable @ battery. If bike dies the problem generally is in the stator or regulator assembly not keeping battery charged. Bike will run untill the battery is too low to keep the ignition system energized and the bike will die. If it continues running w/the ground disconnected, the battery could have a dead cell which will drain the battery in a very short time whether it is running or not.

Posted on May 03, 2009

  • 221 Answers

SOURCE: 1981 Yamaha 850 special, started fine, brougt home, won't start

make sure fuel level is good ,petcock is in run position or res.if fuel level is low

Posted on Jul 25, 2009

  • 201 Answers

SOURCE: bike runs but when i try to start it the battery is dead

Do a voltage test at the battery to see how it is charging, it sounds like it is not... You should charge at 14.5 volts. Start the bike with the voltmeter connected and see what it does for voltage drop and see how it recovers after it is started. If it doesn't come up in voltage possible regulator rectifier or worse case bad stator.

Posted on Sep 10, 2009

Testimonial: "cheers mate will try, but has a brand new suzuki rectorfier on and new battery"

  • 2 Answers

SOURCE: yamaha sr125 ignition problem "click"

I am having exactly same problem. re starting, battery and fizzz. At the bottom of the carb on bikes left side is s screw. get a glass or old clean jam jar, place the thin tube in jar that comes off the bottom of carb, turn screw. petrol should start flowing into jar. let out about two egg cups full into jar. re tighten screw. hold jar up to light. what you have done is remove any water from the carb. you should see any water floating below the petrol. NEED I SAY DONT SMOKE WHEN DOING THIS . The fizz i cleaned all the contacts of any white deposits around bulb holders in the indicator arms.tightened the wiring conectors. Removed and dcleaned the indicator switch.

Posted on Oct 05, 2009

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My hyosung hyper 125 scooter won't even try to turn over the engine - it was running when I got it but now won't turn - could this be the solenoid or the switch?


Hi, Janie and the usual suspects are:
1. Ignition Switch not in the "ON" position.
2. Engine Run Switch in the "OFF" position.
3. Discharged battery, needs to be 12.5 volts or better and be able to pass a load test if necessary.
4. Check the 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.
5. Tip over sensor needs a reset.
6. Faulty ignition switch.
7. Faulty starter button.
8. Faulty kickstand or clutch pull in switch/sensor.
9. Starter control circuit, relay, or solenoid faulty.
10. Main fuse or circuit breaker may be blown or faulty.
11. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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http://www.hyosung.hu/download/pdf/data/service-manual/HYOSUNG%20MS3%20125%20250%20service%20manual.pdf
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http://www.hyosung.com.au/downloads/manuals/SF100.pdf

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For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
https://www.perthstreetbikes.com/forum/showthread.php?t=134911
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