Does anyone know the size and thread pitch of the drain bolt on the fuel tank? TIA.

 

Damn, and I thought that you just wanted to know what size socket you needed

Next time I drain the fuel out of an FD that's been sitting for years, I'll be sure to measure for ya......doesnt really help you right now though. I want to say M6x1.25, but that's just a shot in the dark.

 

i thought it was more like M12.. not sure though

 

Unlikely you're still in need, anyhow playing around with the tank, works out at 10x1.25x16, 17mm hex.