Originally Posted by
inferno13
are you sure its not 2.9x1.78mm?
Check this website under parts and service
http://www.go-racing.co.nz/
OR -0023 2.9 x .78 let me know maybe I'm wrong. Ive been trying like crazy to get these o rings to get my motor back in racing. I'm about to chuck the whole thing and just put an os carb on if it's gonna be this kind of hassle to get replacement parts. I love the motor but this sucks.