the yellow hose is your crankcase breather hose, do not block that off. the two black lines are the oil lines. cut em off, silicone them or plug them somehow, plug the oil feed line to the carb, and mix your gas, alot better then them junk oiljection setups.!!
1985 KXT 250 Tecate - kx cylinder, kx ignition, bassani headpipe, answer silencer, v-force reeds, 38mm airstyker carb, +2 franks swinger, raptor rear shock.
1996 YSF240 Blaster - maxxed out!!!
Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting "HOLY SH-T, what a ride!"