A content release mechanism and a pump-type product comprising the content release mechanism

In a pump-type content discharge mechanism, inventory management is facilitated, productivity is improved in discharge amount setting in response to a user's request, and design is improved. And a stroke changing part for changing the maximum moving stroke of the stem 5 accompanying the discharging operation, in which the contents flow into the housing 2 from the container body by the pump action and the flowing contents flow out through the stem 5 linked with the discharging operation. The stroke changing part includes a cylinder bush 9 which engages with the housing 2 to prevent the stem 5 from coming off from the housing 2, and an inner bush 10 which engages with an inner peripheral surface of the cylinder bush 9 to set a release operation start position of the stem 5. These cylinder and inner bushes 9 and 10 are housed and held inside the housing 2. The...