To provide a back torque reducing device for a friction clutch capable of providing favorable assembling performance and improving productivity.

The friction clutch 40 is provided with a clutch cam 76 provided movably in a direction of the shaft canter 38a of a transmission shaft 38 with respect to a clutch hub 42. The clutch cam 76 includes a release rod 80 extending to a pressure plate 60 side while passing through the clutch hub 42. An adjustment bolt 86 provided on the pressure plate 60 and regulating a movable range of the clutch cam 76 in the shaft center 38a direction is oppositely disposed at an end at the pressure plate 60 side of the release rod 80.