If you do not have a tank under the rear of the seat, and the oil injection lines are missing, especially the little one that goes to the carb is missing, you need to pre mix.
If everything is still in place leave it alone, do not delete it.
Ok so the lines and tank are there. I am assuming the big one goes in, mixes everything and then comes out through the small one and into the carb. Am I thinking right?
the big line feeds the pump/then the pump, pumps in into small line attached to carb.
if you ever take carb off you should see 2 stroke oil in that area Right by the reed cage side.Gas come up through main/pilot jet then hits the 2 stroke oil being sucked into the reeds/crankshaft cylinder/piston pump lol..