Need help !!

Zbskater400

Member
Aug 8, 2013
338
26
90
35
Massachusetts
hey guys this isn't for a blaster but I really need help I just rebuild my motor for my yz125 and it has good compression , spark , it's gettig gas and air but it won't start. When I first turned the gas on it was leaking out of the overflow the whole time so I had to keep the gas off
 
Well the float isn't adjusted right, and it could be filling your bottem end up with gas and flooding it. Take the plug out and kick it over a bunch. It will clear the gas if that's what's happening.
 
I googled yz125 Float height. It didn't say a year though.

float%20height%20.JPG
 
tools:
screwdriver
caliper (or something that measures to at least .1mm)

take off carb, take off the float cover

measure like the picture above says
 
Calipers are about the only thing you can use. Or a steal machinist rule with metric ruling on it.