Cyclopedia manual is not for 2010 300Ri scooter, but for the old one.
Went to the Cyclepedia web site and sure enough they don't show your bike. The Web site says if you need a manual that's not listed to contact them.
Even more weird NADA list 2010 Xicting as a 250 model. It wasn't until 2011 the 300 showed up in the Downtown 300I. In 2012 they show a Downtown and a People GT in 300I models.
I don't know why Cyclepedia would list the 300 in the manual because the Xicting was a 250 RI in 2009. I would contact them but I think it would be covered in the manual Ernst referenced because 2010 was the last year of the smaller Xicting model. After that they only show the Xicting in the 500 model.