Hyosung Motorcycles - Recent Questions, Troubleshooting & Support


Hi, Tony for this scenario you will need your service manual that has all fastener torque specs -fluid capacities and a wiring diagram on the back pages, parts fiche, and owners manual if you can not find the best tool you ever bought for your Hyosung, despair not, for a mere zero $0 you can download another one.
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.
https://www.google.com/search?sxsrf=ALeKk01UplWps94TiY2sz5IreQi_FjWIWA:1593144538892&source=univ&tbm=isch&q=hyosung+aquila+gv+125+replace+the+air+box&sa=X&ved=2ahUKEwix2cPyzZ7qAhXqguAKHeyNBCAQsAR6BAgJEAE&biw=1440&bih=757
https://www.amazon.com/Air-Filter-Hyosung-Aquila-250-CCM/dp/B01N7579IQ
http://banici.pl/bam/Tom/GV125/Instrukcje/GV125_SERVICE_MANUAL_EN.pdf
https://www.hyoparts.com/collections/gv125
https://www.manualslib.com/manual/406874/Hyosung-Gv250.html

Hyosung... | Answered on Jun 26, 2020


Hi, Anonymous you need to locate the fuel flow origin first to isolate the problem area otherwise the usual suspects are:
1. Fuel tank empty.
2. Fuel cap or fuel tank not venting properly.
3. Fuel filter clogged with rust or dirt.
4. Fuel valve not in the on or reserve position.
5. Vacuum line to fuel valve cracked, broken, pinched, or missing.
6. Fuel valve/petcock clogged or diaphragm cracked, cut or torn.
7. Fuel line from the fuel valve to the carburetor or fuel pump clogged, cracked, pinched, bent, broken, or missing.
8. Fuel pump not working.
9. Fuel line touching cylinder or head causing fuel to boil and vapor lock, repair by rerouting and wrapping line with convoluted tubing.
10. Carburetor inlet clogged.
11. Carburetor float or needle and seat stuck.
12. Carburetor not venting properly overflow line or bowl fitting clogged, pinched, or bent.
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.
http://dna.cdi.cz/hyosung/gt650-service-4-fuel.pdf
Trouble with bike starting believed to be issues with fuel
HYOSUNG GT 250 Service Manual
http://www.alpha-sports.com/hyosung_parts.htm
http://mybikemanuals.com/hyosung/hyosung-comet-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Hyosung... | Answered on May 21, 2020


Hi, Zain and the usual suspects are:
1. Throttle cables not properly adjusted.
2. Idle screw adjusted too low.
3. Air-fuel mixture screws not properly adjusted.
4. Pilot jet clogged.
5. Pilot jets too small.
6. Clogged air filter.
7. Faulty choke.
8. Multi carburetors not in sync.
9. Carburetor float needle valve stuck.
10. Fuel not getting to the carburetor.
11. Slide stuck in the carburetor.
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.
http://korider.com/index.php?topic=26918.0
https://www.youtube.com/watch?v=ofdQK-NO-oc
https://www.manualslib.com/manual/1018449/Hyosung-Aquil-Gv650.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/406871/Hyosung-Gv-650-Efi.html

2007 Hyosung... | Answered on Nov 13, 2019


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Hyosung, despair not, for a mere zero $ you can download another one.
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.
https://www.google.com/search?q=Wiring+diagram+2009+Hyosung+V2S+650&tbm=isch&source=univ&sa=X&ved=2ahUKEwjzmsqQhdjlAhUjx1kKHU7vAMoQsAR6BAgJEAE&biw=1440&bih=757
https://www.manualslib.com/manual/1018449/Hyosung-Aquil-Gv650.html?page=219
https://www.manualslib.com/manual/1177055/Hyosung-Gt-650.html
https://alpha-sports.com/hyosung_parts.htm
http://mybikemanuals.com/hyosung/

Hyosung GV 650... | Answered on Nov 07, 2019


Hi, Patrick before testing any electrical component in the Turn Signal Light 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 because your battery may have 12.5 volts or more but little or zero amps causing the battery to be faulty and must be replaced, "AGM" batteries fall into this category more so than lead-acid types, also before diagnosing any turn signal/running light/parking light issue make sure the bulb is good and the light fuse has continuity with a test light. If you have replaced your OEM lights with one or all LED lights you are going to need a load equalizer.
If no turn signals are working the cause could be a faulty turn signal module/flasher or the connector going to it, look for corroded, loose, or broken pins/sockets. Contact spray cleaner is great for removing corrosion.
If your turn signal comes on but takes several seconds before it starts flashing you may have dirty contacts in the turn signal switch/button, the switch needs to be opened up and cleaned also the flasher may be starting to fail. It should be noted that cold weather will only exacerbate the situation especially when temperatures drop down below freezing and the location of the component, turn signal switches on the handlebar are at the mercy of the oncoming freezing 70 mph wind and makes it hard for the contacts to do their job covered in frozen grease/grime
If all four turn signals flash at the same time like hazard lights even though you only pressed one turn signal button then you have a LED light in the circuit and need a load equalizer that can be purchased from any motorcycle parts supplier.
If your speedometer does not function properly it will have to be fixed first because your turn signal module gets the data from the speedometer for normal turn signal function.
If your front turn signals don't work use a test light to check for power and ground at the bulb socket, then start backtracking the wiring through every wire connector to the turn signal switch/button and check for continuity, go all the way back to the fuse if necessary to find the cause of the malfunction.
If your rear turn signals don't work check your rear fender wiring harness connector first, look for, corroded, broken, loose pins/sockets, power, and a good ground, the harness connector is usually located under the seat on the front of the rear fender then keep tracing the wiring look for obvious harness damage caused by the rear tire.
If you still can't find the malfunction backtrack from the rear fender wiring harness connector.
If one side does not work you could have a faulty turn signal switch or module check for continuity.
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.
https://www.northamericangoldwings.com/community/forums/index.php?/topic/8709-turn-signals-not-working/
https://www.youtube.com/watch?v=Vd4fL9yZbXI
https://www.manualslib.com/manual/865104/Hyosung-Aquila-250.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/406874/Hyosung-Gv250.html

2002 Hyosung GV... | Answered on Oct 31, 2019


Hi, Sonni it should be noted that the reasons your FI light stays on constantly or flashes and your bike will or will not start and may turn over or not, these conditions will vary from bike to bike depending on the year, make, and model and you should always refer to your owners/service manual for proper diagnostic procedures. It should also be noted that any type of prior work done to the bike or an abnormal event occurrence IE: adding accessories, electrical curiosity/adventures, laying the bike down/crashes, rain storms/bike washings just before FI light issues started can be significant hints/aids into tracking down the gremlin. The newer the bike the more sensitive the ECM becomes and will not let the bike start when aftermarket accessories have been installed without being reprogrammed. That being said the usual suspects are:
1. Faulty Fuel Pump, fuse or system relay switch.
2. Battery starting to fail due to old age/damage, perform a load test.
3. A discharged battery, 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 safety switches/sensors: run/off, ignition, clutch lever, neutral, side stand, tip over, fuel, and or their connections.
5. Broken wire or worn insulation exposing wire to a ground situation especially inside wire harness at tight bends around fairing brackets, under dash panels, under fuel tanks over cylinder heads etc. Many harnesses are open on the ends that will allow water to enter and accumulate at v-bends.
Dielectric grease and contact cleaner are your best friends for wire/cable/harness connectors, look for corroded, broken, or loose pins/sockets.
6. Installation of aftermarket accessories ie. exhaust systems, mufflers, air cleaners, fuel tuners, electrical component etc.
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.
http://korider.com/index.php?topic=28340.0
How to read FI fault code Hyosung GV650 and GT650
HYOSUNG GT 650 Service Manual
http://www.alpha-sports.com/hyosung_parts.htm
HYOSUNG GT650 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


2016 Hyosung GT... | Answered on Oct 24, 2019


Hi, Ceamaris for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Hyosung, despair not, for a mere zero $0 you can download another one.
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.
https://www.google.com/search?q=Headlight++Hyosung+GV650+Trend+Biller&tbm=isch&source=univ&sa=X&ved=2ahUKEwjNiPSeyJzlAhVCw1kKHQJYCfYQsAR6BAgJEAE&biw=1440&bih=757
http://korider.com/index.php?topic=21006.0
https://www.manualslib.com/manual/1018449/Hyosung-Aquil-Gv650.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/406870/Hyosung-Gv-650-C.html

2007 Hyosung... | Answered on Oct 14, 2019


Hi, James_rowley for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Hyosung, despair not, for a mere zero $0 you can download another one.
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.
https://www.google.com/search?q=Fuel+tap+positions+2001+Hyosung+GV+125+Aquila&tbm=isch&source=univ&sa=X&ved=2ahUKEwjRgPCDx5zlAhXCx1kKHToVDPgQsAR6BAgJEAE&biw=1440&bih=757
https://www.manualslib.com/manual/406874/Hyosung-Gv250.html?page=12
https://www.manualslib.com/manual/406853/Hyosung-Comet-125.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/860797/Hyosung-Gv250-Ei.html#product-GV125

2001 Hyosung GV... | Answered on Oct 14, 2019


Hi, Paulhodgson6 derestrict is a negative term rider's use to express their wish to improve performance on their bike or scooter. Depending on the country and motor vehicles laws some bikes and scooters are designed to conform with said laws and their performance is slightly lower than other countries. All vehicles in the world are designed to perform at 75-80% of their maximum potential, this ensures the longevity of the engine. Derestricting or improving performance is always possible on any vehicle but the tradeoff of engine longevity numbers go down, how much depends on the number and type of performance upgrades. Your local dealership or reputable independent shop are best equipped to provide you with technical data and willingness to comply with your needs.
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.
https://www.motorbike-forums.com/threads/derestricting-hyosung-125-comet.51808/
https://www.themotorbikeforum.co.uk/viewtopic.php?t=30148
https://www.manualslib.com/manual/1189833/Hyosung-Rt-125-D.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/797234/Hyosung-Rt125d.html

2009 Hyosung RT... | Answered on Oct 14, 2019


Hola, Martin_ig295 y los sospechosos habituales son:
1. Una bater?a muy descargada o da?ada debe tener 12.5 voltios o m?s y poder pasar una prueba adecuada de "CARGA" si es necesario, puede tener una lectura preliminar de 12.5 voltios o m?s, pero poco o cero amperaje la bater?a est? defectuosa y debe reemplazado, las bater?as AGM fallan en este escenario m?s que las bater?as de plomo-?cido.
2. Fallo del alternador / generador y / o regulador de voltaje.
3. Terminales o cables sueltos o corro?dos de la bater?a, especialmente el cable "NEGATIVO", busque conectores sueltos, corro?dos o rotos dentro del mazo de cables en los extremos "AMBOS".
4. Un interruptor de circuito principal o interruptor de encendido fallido, verifique si hay conexiones flojas y continuidad.
5. Sistema defectuoso y / o rel? de encendido, verifique la continuidad.
6. Fall? la bobina de encendido, el estator, el magneto, el m?dulo de encendido / electr?nico.
7. Sensor CKP, CPS, CMP, MAP, TPS o BAS defectuoso, clavijas / enchufes de cable corro?dos, sueltos o rotos.
8. Los cables del acelerador y / o la velocidad de ralent? ajustada incorrectamente, la velocidad de ralent? caliente debe ser de 950 RPM a 1000 RPM.
9. Neutro defectuoso, soporte lateral o interruptor de seguridad de la palanca del embrague.
10. Interruptor de apagado defectuoso o corro?do.
11. La bomba del acelerador est? da?ada o no funciona.
12. Agua o suciedad en el sistema de combustible, carburador o filtro.
13. L?nea de combustible restringida, bloqueada o retorcida.
14. Dep?sito de combustible vac?o.
15. La tapa de la gasolina no est? ventilando correctamente o el sistema de ventilaci?n del tanque de combustible est? bloqueado, afloje la tapa de la gasolina y realice una prueba de manejo.
16. Una bomba de combustible, regulador de presi?n y / o inyectores de combustible fallados.
17. La l?nea de aspiraci?n desde el colector de admisi?n a la llave de purga rota, agrietada o no conectada, la l?nea de ventilaci?n del carburador tapada.
18. La aguja y el asiento se atascaron en el recipiente del flotador. 19. Grifo obstruido o da?ado.
20. El interruptor de ?ngulo de inclinaci?n est? defectuoso o necesita ajuste.
21. Falla catastr?fica del motor, realice una prueba de compresi?n.
Para obtener m?s informaci?n sobre su problema y las valiosas descargas "GRATUITAS" que necesitar? para ver o imprimir, haga clic en los enlaces azules a continuaci?n. Buena suerte y que tengas un d?a maravilloso.
https://netrider.net.au/threads/hyosung-engine-cutting-out.125043/
http://korider.com/index.php?topic=29021.0
https://en.hyosung-club.com/manuals
https://alpha-sports.com/hyosung_parts.htm
https://absolutelyscooters.net/pdf/CGEN_dawg_scooter_manual.pdf

2006 Hyosung EZ... | Answered on Oct 14, 2019


Hi, Abel_aqui and the usual suspects are:
1. Dirty or clogged air filter.
2. Faulty spark plug.
3. Bad Gas.
4. Improper oil level.
5. Improper chain adjustment and lubrication.
6. Low tire pressure.
7. Dirty or contaminated carburetor needs cleaning and tuning.
8. Clogged or faulty fuel pump or injectors.
9. Improper valve adjustment.
10. Slipping clutch.
11. Improper timing.
12. Low compression.
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.
http://korider.com/index.php?topic=12875.0
https://www.flickr.com/groups/[email protected]/discuss/72157607336392431/
https://en.hyosung-club.com/manuals
https://alpha-sports.com/hyosung_parts.htm
https://absolutelyscooters.net/pdf/CGEN_dawg_scooter_manual.pdf

2005 Hyosung EZ... | Answered on Oct 14, 2019


Hi, Ano for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Hyosung, despair not, for a mere zero $0 you can download another one.
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.
https://www.google.com/search?q=Drive+belt+2011+Hyosung+MS3125&source=univ&tbm=shop&tbo=u&sa=X&ved=0ahUKEwjB0aSKupzlAhXrqFkKHTQwBgMQsxgILw&biw=1440&bih=757
https://www.google.com/search?q=Drive+belt+2011+Hyosung+MS3125&tbm=isch&source=univ&sa=X&ved=2ahUKEwjB0aSKupzlAhXrqFkKHTQwBgMQsAR6BAgFEAE&biw=1440&bih=757
https://www.manualslib.com/manual/406878/Hyosung-Ms3-125.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/802355/Hyosung-Ms3-250.html#product-MS3%20125

2011 Hyosung... | Answered on Oct 14, 2019


Hi, Scotty for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Hyosung, despair not, for a mere zero $0 you can download another one.
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.
https://www.google.com/search?q=Wiring+diagram+2003+Hyosung+SF+50+Racing&tbm=isch&source=univ&sa=X&ved=2ahUKEwjOrLittJzlAhXGs1kKHaGLA_wQsAR6BAgGEAE&biw=1440&bih=757
https://www.motorcycle-manual.com/hyosung/
https://www.manualslib.com/manual/406887/Hyosung-Sr-50-R.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/630265/Hyosung-Sense-Sd-50.html

2005 Hyosung SF... | Answered on Oct 14, 2019


Hi, Szymon the vast majority of service, parts fiche, and owners manuals on the internet are "FREE" to download and all service manuals contain wiring diagrams in the back pages. The rest usually charge a modest fee of $15 and there is a handful of obscure, rare, obsolete, and very old models that are no longer or never were available and some were never printed in English. The Indian and Philippine markets are usually in E-book format only, for these rare occasions I shall look on eBay and find the cheapest one available. Most of the manuals will cover your exact make, model, and year otherwise one will be provided that comes as close as possible to your bike and will have most of the same info that an exact manual would have. If there is no $ sign after the manual link it is free to download.
To download your manual for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://www.manualslib.com/manual/1018449/Hyosung-Aquil-Gv650.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/406870/Hyosung-Gv-650-C.html
https://bikez.com/motorcycles/hyosung_gv650__2007.php
https://en.wikipedia.org/wiki/Hyosung_GV650

2007 Hyosung... | Answered on Oct 14, 2019


Hi, Sammie for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Hyosung, despair not, for a mere zero $0 you can download another one.
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.
https://www.google.com/search?q=Seat+removal+2007+Hyosung+RT+125+D&tbm=isch&source=univ&sa=X&ved=2ahUKEwjogqDTrpzlAhXOwVkKHX6IB_cQsAR6BAgGEAE&biw=1440&bih=757
http://korider.com/index.php?topic=17016.0
https://www.manualslib.com/manual/1189833/Hyosung-Rt-125-D.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/797234/Hyosung-Rt125d.html

2007 Hyosung RT... | Answered on Oct 14, 2019


Hi, Jimmy for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Hyosung, despair not, for a mere zero $0 you can download another one.
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.
https://www.6sigmajetkit.com/hyosung-gv-650-avitar-aquilia-mirage.html
https://www.youtube.com/watch?v=QwbZ6_46oC8
https://www.manualslib.com/manual/1018449/Hyosung-Aquil-Gv650
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/406870/Hyosung-Gv-650-C.html

2007 Hyosung... | Answered on Oct 14, 2019


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Hyosung, despair not, for a mere zero $0 you can download another one.
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.
https://www.google.com/search?q=Remove+the+instrument+cluster+Hyosung+GV+250&tbm=isch&source=univ&sa=X&ved=2ahUKEwjOgrLnq5zlAhVC1lkKHcyJCvoQsAR6BAgIEAE&biw=1440&bih=757
https://www.youtube.com/watch?v=2gAbn7IY8LI
https://www.manualslib.com/manual/865104/Hyosung-Aquila-250.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/406874/Hyosung-Gv250.html

2011 Hyosung GV... | Answered on Oct 14, 2019


Hi, William and the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery should have 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 batteries fail in this scenario more so than lead-acid batteries.
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. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting/leaking, spark plug cable connections loose check for spark leakage in the dark.
6. A faulty ignition coil or electronic control module.
7. Faulty pulse coil.
8. Faulty CKP, CMP, or BAS sensor.
9. Faulty ignition switch.
10. Faulty run/off switch
11. Tilt sensor needs a reset.
12. Security alarm failing to disarm needs reset
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.
http://korider.com/index.php?topic=24881.20
https://www.youtube.com/watch?v=jaSKU2m3qbI
https://www.manualslib.com/manual/1018449/Hyosung-Aquil-Gv650.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/406870/Hyosung-Gv-650-C.html

2006 Hyosung GV... | Answered on Oct 14, 2019


Hi, Jeremy for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Hyosung, despair not, for a mere zero $0 you can download another one.
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.
http://korider.com/index.php?topic=21980.0
https://www.motorcycle-manual.com/hyosung-fault-codes/
https://www.youtube.com/watch?v=ofdQK-NO-oc
https://www.manualslib.com/manual/1018449/Hyosung-Aquil-Gv650.html
https://alpha-sports.com/hyosung_parts.htm
https://www.manualslib.com/manual/406860/Hyosung-Gt-650-Efi.html

2013 Hyosung GV... | Answered on Oct 14, 2019

Not finding what you are looking for?
Hyosung Logo

989 questions posted

Ask a Question

Usually answered in minutes!

Popular Products

Top Hyosung Experts

Arnie Burke
Arnie Burke

Level 3 Expert

6386 Answers

Marvin
Marvin

Level 3 Expert

85239 Answers

Muntejaya Ginting
Muntejaya Ginting

Level 3 Expert

10422 Answers

Are you a Hyosung Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...