Motorcycle Repair: honda cr 125 1996, honda cr 125, honda cr125

Question
hi i hav got a honda cr125 1996 motercross bike i havent had eny problems with it so far starts first time every time but i went out on it last sunday and i noticed that petrol was leaking from my over flow pipe on the bottom of my carb i hav got a haynes manual for it but dosent tell me eny think about it i was just woundering wether u had an idea what it could be looking forward to here form you as im itchin to get it back out there lol p.s watch the spelling english wasent my top subject at school thank you

Answer
Luke, the float in the carb isnt shutting off the fuel properly. Pull the carb off and remove the bowl and pull the float pin and float assembly. Make sure there isnt any dirt or debris on the brass seat. Also check the float needle as the rubber tip should be soft and no wear marks around the tip.Also check the top side of the needle and see if the spring loaded plunger isnt sticking. put the float back in place and hold the carb up side ways with the float hinge up and the float hanging down. The float should be parallel with the bottom on the carb top. Do not invert the carb upside down as the weight of the float will push the spring loaded pin in on the needle and give you a false measurement. One the float is set put the bowl back on and install the carb and try again.