look under the motor u will see a lug of alloy the drain bolt is right behind it this peice of alloy stops any rocks etc recking the thread easy to find if u still cant find it look for the biggest bolt closest to the centre of the bottom of the engine
hey gazza i know where bolt is to drain the oil but in the instruction manual its says to check or clean the oil strainer/filter as well every 6 months
the manuals are for 150,200,250cc hummers how ever the 150cc and 200cc motors have different bottom ends to the 250cc only the 150cc and 200cc have the removable oil filter
its on left hand side of motor,big arse nut bout 26mm at very bottom on side of gearbox,its just a wire mesh that catchs shit,take it out wash in pertrol put back in,real easy,hope this helps.ps if u cangt find it pm me and ill send u a pik of it
hey lo-cou just where i thought it was but didnt want to touch it just in case. thanks for your help bro, have you taken yours out yet and did it have much shit on it. just needin to know cause my mate has had his for a wile and he did'nt even know there was a filter