There are two 13 or 14mm bolts under the rear fender that hold the seat. Easy to find, but can be dirty. The red oil light will likely be on when the bike is running in neutral. It should go out when in gear. When the oil in the oil injection tank gets low enough the light will come on when the bike is in gear. Leave the oil unchecked at your own risk - run out of injection oil and fry the engine. Owner´s manuals seem rare on ebay, but might be available elsewhere. Lots of info on the web, though, if you need.