A clutch mechanism (13) includes a clutch portion (20) and a pinion gear (32). The pinion gear has an engaging part (44a) and a gear part (48). The engaging part (44a) is located on a first end (32b) as a spool-side end of the pinion gear and is capable of being engaged with the clutch portion (20). The gear part (48) is meshed with the drive gear (31). The gear part has helical teeth enabling the pinion gear (32) to be urged toward the spool (12) by the drive gear (31). The engaging part (44a) has a bottom (44c) and a first wall (44d). The first wall (44d) extends from the bottom (44c) toward the first end (32b) and tilts in the same direction as the helical teeth with respect to the spool shaft (16) such that the pinion gear is urged oppositely to the spool by the clutch portion (20) when the engaging part (44a) is engaged with the clutch portion and receives transmission of rotation in a fishing-line releasing direction from the spool (12).
