Hey Arnold!

Director N/A
Actors Francesca Marie Smith, Jamil Walker Smith, Dan Castellaneta, Justin Shenkarow
Year 1994
End 2004
Minutes 15
Category Animation Series
Genres Animation Comedy Drama
Awards 3 wins & 20 nominations.

The everyday life of Arnold, a 4th-grader in a nameless city that resembles Brooklyn, New York, who lives in a multi-racial boarding house with his grandparents and a motley assortment of neighbors and friends.

Harley-Davidson unknown Episode: 5.15

V-twin configuration seems to narrow it down to either a Crocker or (more likely) a Harley.