TakeoverJoker welcome again. I'm reposting these two links and adding one more that is handy if you want to do any mods to your Silverwing. I hope you can access them with your android. They are the next best thing to a service manual but I would put buying a service manual on the top of your list of things to buy for your "new" scooter.
Maintenance, Tips and Hints"Pictorials" Maintenance accessories-modificationsHere is a link to a scooter group that is close to you that is an active club with some good members. You may like to check them out if you're interested in finding someone to ride with. The group I belong to gets together with them sometimes.
Palm Beach Scooter Club
I see you've posted another question as I was typing this post. Do you have a computer that you can download the pictorial that Jeff posted in your other introduction? The final drive gear oil is not real critical on a scooter as new as yours unless it has unusually high mileage.
If someone doesn't chime in with an answer for you I will try to look at my scooter or service manual to give you an accurate discretion of the drain and fill plugs tomorrow. I can drain and fill the final drive by memory but to put it in words I would like to have the picture in front of me. But I will give it a try to explain it, so here goes. The fill plug is the odd looking allen bolt in the rounded plastic cover on the left rear side and the drain plug is under and a little more to the front of the rounded plastic cover on the left rear of the scooter.