Hi its not a problem, i just got a ninja 250cc 2008 and didnt get a handbook with it, im wondering if they have a reserve tank and where i would find it?

Hi there and welcome to fixya,

The reserve notion is just an adjustment by the fuel **** switch. The normal fuel intake from the fuel tank will drain fuel 2 inches higher than the bottom level. The reserve part will take .5 inch or even lower. Switching the fuel **** to ON will take fuel from the former state (higher) while selecting RESERVE will drain fuel from the later (lower). Making it look like there's a reserve part on the fuel tank when in fact you just drain fuel from different fuel levels.

Hope this helps