The Adventures of a Two-Minute Werewolf (1985)

Adolescent werewolf Walt Cribbens finds himself transforming into a wolf-boy form for two minutes at a time. He has no idea why he is a werewolf, so he decides to seek answers with the help of his best friend Cindy, who witnessed his very first transformation. This quest is complicated by a series of local robberies that throw suspicion on Walt.