Oh ok so it is a 2 stroke good stuff.On the one on E-bay it says it's oil injected so it should have an oil bottle for the 2 stroke oil and the gearbox is seperate and uses motorcycle gear oil in that.Now if it is oil injected 2stroke it dosn't need oil added to the fuel thats what the oil injection does,so makesure the oil bottle for the 2 stroke oil injection has oil in it.The gearbox may have a dip stick in the twister top down on the engine if it hasn't then it will ussually say somewhere close to that some thing like OIL 200cc if this is the case and there is no dip stick then the only way to know that the oil level is right is to drain the gearbox and refill it with freash oil(it's not a bad idea anyway if you have been learning to ride on it cause you probably have been giveing the clutch a workout.If you don't know what your doing get someone who does to help you.There will be a drain pug under the engine/gearbox somewhere remove that and let the oil drain out put the plug back in, don't over tighten it!! just snug is good so it wont come out(remember its only sitting there it not holding the engine in)fill it back up with MOTORCYCLE gearbox oil to the right amount and your done.
BIT