You must subtract wet weight of scooter from these figures.
NO scooter that size can carry 500 lbs......most can safely carry no more than 300 or so.
Find sticker on scooter. ...see gross vehicle weight permitted on each tire.....add together and see manual for scooter weight to subtract ftom thst gross weight.
Many motorcycles are rated in mid 300's....in spite of the weight put on them.
Stig