[1][2][3][4][5] History was made in the 1977 final when Ivan Mauger of New Zealand equalled Ove Fundin's title record of five World Championship wins.
Mauger had gone close to equalling the record before and finally achieved it in Sweden, the home of Fundin.
The result was just one point for Olsen, a badly damaged Jawa bike and the end of his title hopes.
Defending champion Peter Collins won his last ride to claim the silver medal despite riding with a broken left leg, but Olsen won the bronze medal run-off against young English rider Michael Lee.
[8][9] Josef Angermüller was killed during the first preliminary round at the San Savino Speedway Park after falling and colliding with a concrete post.