20 Most Recent 2007 Yamaha Ybr 125 Questions & Answers

just change the ignation coil thats a common problem on ybr ,it has happen to and that what i did

Concentrate on the front indicator. With a meter check you have an intermittent supply with the ignition on and left indicator selected. If its ok, it will be an earth (ground) problem. Check using a temporary earth wire from the indicator unit to the chassis. If no voltage found at indicator bulb, trace the supply cable back to source.

There should be a black wire this goes to earth (chassis/frame) this will connect to the bulb holder. The yellow wire connects to to the stop lamp side of the bulb the other wire blue? goes to the taillight side of the bulb. If you google ybr125 wiring diagram there are lots on line.

I don't know this machine but if it is any help on my Yamaha TW125 the seat is held by 2 6mm bolts underneath. The top rail of the sub-frame has 2 small plates that the bolts go thru. Try looking under the seat from the chain side use a torch and you should find the answer I hope. Good luck.

Hi sounds like your nearly there ,try swapping hose around ,I once mixed the in and out ,next did you take the carbs apart and clean ,also a small shot of wd 40 in to the fuel pump without hose connected then pour out ,from what I read sound pretty good kid best of luck

the fuel pump is most likely seized from setting too long. fuel injectors could be clogged as well.

gday ian did you wash your bike before you put it away it could be the kill switch terminals could be dirty or your conecters give all a spray with wd 40 or what ever brand you have or you can use a special spray for electrical parts also it may pay to check the earthing to the frame as sometimes this can get a build up behind .if not it sounds like a job for the dealer or a auto electrician .hopes this helps cheers

wot should it rev to at max revs ? is 4th gear top gear , if so are the sprockets original size as a smaller rear spocket will make it go faster but you can loose top revs in top gear and if carbs etc havent been adjusted to cope with this !

Fuel does "go off" but it won't happen in just 4 weeks. But, the battery will lose some of its charge in that time. Charge the battery and try again. Good luck.