20 Most Recent 2005 Yamaha Ybr 125 Questions & Answers

Does the bike have an Immobiliser? If so this maybe the reason you have no spark..... When did the problem start? Coils rarely are the cause of no spark.

Hi,it would be best to undo the throttle cable where it gose into the carb then turn the throttle grip and see if the cable turns freely at the throttle grip,then pull it from the end that gose into the carb,if it runs freely then the carb needs cleaning,if it dose not run freely just replace it,hope this was some help.

Could be the grounding of the bulb, relay or switch. You need to get a multimeter to test them. If it makes the clicking noise then the switch is ok

medium fork oil - 150 mls in each leg

Hi vikeshharryp,
Here is your wiring diagram


Hope I helped you.
Have a nice day!

check power at fuze then at horn with a test light if you have power at the horn replace the horn

I would start with pulling the carbs, and cleaning the jets. run a wire from a wire blush , so you dont damage them, thru them, with some carb cleaner. should be fine after that. pull the jets and clean then, dont just spray carb cleaner thru them.

Hi and welcome to FixYa,

Should you still need assistance, a couple of initial checks:

• ensure black/white wire to CDI is not tied to the ground with IGN switch to ON;
• IGN +12 on brown wire;
• pulsating voltage on white wire when starting.

Good luck and thank you for asking FixYa.