nsrdownunder wrote:get way more than a tank i have never remembered how many tanks i think 3-4 . Check there is no 2stroke oil in your gearbox the seal on the bottom of the oil pump can fall down .

Yip that was my first thought.
If that seal has dropped out of the bottom of the oil pump, and you have put plenty of 2T oil in, be careful when you open the gearbox cap, oil will likely pour out everywhere if this is the problem.