Hi chaps.
I bought my daughter a 2012 txt pro 125 gas gas for Christmas. It's a great bike but, it's been running far too rich. Here's what I've done to try and cure this.
1. Dropped the needle one on the clip, one from top, lightly oiled the air filter. It ran ok for a couple of hours, then started running rich again and bogging slightly, the exhaust end was very very oily!
2. Put a 35 pilot in, in place of the 36 pilot, left the clip one from top, 2.5 turns out on the mixture screw. It ran a lot better, but the exhaust was still very oily!
3. I've now put the 36 pilot back in, fitted a 45 slide in place of the 40 slide, mixture screw two turns out.
I'm using Motul 5-10 pre mix, 70 ml per 5 litres.
I also repacked the silencer last night, it was a right mess!!!!
Any suggestions will be much appreciated!