This vehicle isn't offered in the US, so I have little technical information. I will try to help. Are you looking for directions for replacement of the rear main engine oil seal?
Here is what I can tell you. The transmission and engine will need separated and then the oil pan will need removed on the engine. If Hyundai's 1.2L is designed like their 1.6, you will have to remove the rear oil seal case which is bolted to the engine with five bolts.
I attached a picture of what I have. I'm hoping it helps.
Now, before installing the new oil seal, make sure to lubricate it with motor oil before it makes contact with the crankshaft.
I wish I had more, but as mentioned, this isn't one I can look up for you. However, if you run into trouble, let me know and I'll try my best to help.
Tuesday, March 3rd, 2020 AT 5:56 PM