if you are talking about your front drive shaft going from motor to the front differential then it is probally the seal around the drive shaft comeing out of the motor........ It isnt really a bid deal and is very common on these bikes mine is doing the same thing too and this will be the 3rd time that i have had to change the same seal........also its not a really hard job to do it looks alot harder then it is....... I always change it though because i am in the water more then on land on my bike and i figure if oil can get out then water can get in......... If this is the seal that you are talking about then it is a 3 dollar seal from the honda dealer