20 Most Recent 2003 Hyosung Comet 125 Questions & Answers

In most bikes the kill switch is on the right handlebar. It will be marked with and "on or off" or a "run" etc.

Hi and welcome to fixya,

This can either be a Timing problem or bad fire. If you say the plugs are sparking, then it can be that it fires where it shouldn't be firing. The misfire can also be caused by a double fire on the plugs. Time the engine properly, adjust the timing chain, check for proper engine compression as well..
Hope this helps

there usually is not a break in period anymore but when you get your first oil change refer to your owners manual. you did not say where you live but a 10w30 5w30 is recommended most. Always use a Multi viscosity oil like 10w30 the 10 is the viscosity at start up so your engine starts better. The 30 is the viscosity at operating temp. the w means that you can use it in winter. The API that you see on the oil can means American petroleum institute. SAE on the can means society of automotive engineers Viscosity means flow rate and you need to keep oil flowing at all times

is there any setting to make it softer? my dad put some wd40 on it and its a soft as a babys bottom now try it before you waste your money but if you find it does'nt work then get a new clutch but if it works you've saved money lol try it it worked on mine ,

tires control lights oil, chassis, stands,,,

you might want to try some Arrow Fly Taper bars. They work with the stock mounts and should add a couple of inches to the height of the bars. They are really nice to ride with and are alot less expensive that Protapers.

Make sure your battery is fully charged and then look for a in-line fuse in a little white case next to the battery. Open up the little white case and make sure the fuse is not blown and has a good connection. You can do a visual check to see if the wire inside is burnt, wiggle it and make sure the connection is good. If your fuse is good then you will need to get a multimeter and check each wire for continuity. Also look for any burned out light bulbs, when one bulb fails it could knock out all of the lights on your scooter

this is a cdi modual its the brains of the motor it makes the sparkplug fire

Question edited for clarity. Help and the Service Manual https://www.google.com/search?q=2002+hyosung+sense+gas+and+vacuum+line+diagram ..

Question edited for clarity, typos, add CAPS. Did the take the connectors away? Otherwise, use bullet crimp connectors and shrink wrap sleeve same colour to same colour. https://www.google.com/search?q=2011+hyosung+gv250+efi+wiring+diagram ..

https://www.google.com/search?q=2008+Hyosung+GV+250.+It+is+bogging+down+on+acceleration ..

Check the actual switch on the handle bar. These can sometimes fail and stick in the on or off position. This could also be a faulty solenoid between the battery and the starter motor. Try this. Find the Solenoid. It's usually a small, black, round barrel shaped block. It will have two small and two large cables attached to the top of it. Disconnect one of the Small wires and reconnect the battery. If it kicks over it is most likely the solenoid. Disconnect the battery. Refit the Small wire then reconnect the battery. If the engine kicks over it could be the actual starter button.

Question edited for clarity and toss in some CAPS. Charge the battery up whilst it is still in the bike. If the voltage is lower than 11 volts or so with the engine being drained by the starter, there is not enough power to operate the fuel injection. The battery needs to be 12.4 to 13.2 volts. https://www.google.com/search?q=2018+Hyosung+GT125R+crank+won%27t+start ..

That was not the drain plug you pulled. Here is where i learned alot about my bike great source for information. And dyi guides. Idk when this was posted but you want to go here before you get into alot more of a project. https://hyoriders.club/forums/topic/wrong-drain-plug-for-oil-change/

There could be several possible causes for your 2002 Hyosung GV250 bogging down when starting out. Here are a few things to check:

1. Fuel system: Ensure that the fuel system is functioning properly. Check for clogged fuel lines, dirty fuel filter, or inadequate fuel supply.
2. Carburetor: The carburetor may be dirty or clogged, causing a lean fuel mixture. Clean the carburetor or have it professionally cleaned if needed.
3. Air filter: A dirty or clogged air filter can restrict airflow to the engine, leading to poor performance. Check and clean or replace the air filter as necessary.
4. Spark plugs: Worn or fouled spark plugs can cause poor ignition, resulting in engine bogging. Check and replace the spark plugs if necessary.
5. Exhaust system: A partially blocked or restrictive exhaust system can cause poor performance. Check for any obstructions and clear them if necessary.
6. Electrical system: Ensure that the battery and charging system are functioning properly. Weak battery or faulty charging system can lead to inconsistent power delivery.

If these steps do not resolve the issue, it may be necessary to have a professional mechanic inspect the motorcycle to diagnose the exact cause of the problem.

No one has experienced your issue although there are some electrical issues in the link. Check the all the connectors around the cluster. Break the connections, spray with switch cleaner and remake the connections. https://www.google.com/search?q=2013+Hyosung+GT250R+cluster+not+working ..

i know this may seem drastic but in my experience i have found that the Chinese electric connectors are normally at fault first thing i would do is chop the connection block out and either put your own bullet connectors in or solder the wires together either way it is the connector at fault and needs replacing

The fuel gauge is faulty and should have to be replaced.

It sounds like there may be an electrical issue with your motorcycle. Here are a few things you can try:

1. Check the battery connections - Make sure the battery cables are securely attached to the battery terminals and that the connections are clean and free from corrosion.
2. Test the battery - Use a multimeter to test the battery voltage. A fully charged battery should read around 12.6 volts. If the battery voltage is low, try charging the battery or replacing it.
3. Check the fuses - Check all the fuses in the fuse box, including the main fuse. If any of the fuses are blown, replace them.
4. Check the wiring - Inspect the wiring for any damage, loose connections, or corrosion. If you find any issues, repair or replace the affected wiring.

If none of these steps help, you may need to take your motorcycle to a professional mechanic or dealership for further diagnosis and repair.