Do they have a pacific name or engine code/number , some items on the web say for Chinese engines gy6 as photo attached
Gy6 is 4 stroke. It's something like 1pe just Google 1pe Chinese 2 stroke. It's a Chinese copy of a minerelli. I think possibly minerelli parts fit it? Steve?
I think they only did a 4 stroke in that bike now, pictures of both sides of the engine please; or if you have an oil dip stick on the right hand side of the engine it's definately a 4 stroke
the oil tank should look like this: The feed pipe to the oil pump runs off the bottom of it, follow that to the pump on the lower right hand side of the engine. It is tucked away so you will need a torch or inspection light. If the tank is not there, then it has been removed and the bike is running on premix