| 摘要 |
PURPOSE:To prevent users from adjusting a screw by screwing it in the specific direction and providing a guide that blocks the head of it. CONSTITUTION:A slanted screw hole is made in the external face of a carbureter 1, facing to a choke valve lever 5. An adjusting screw 7 loaded with a compression spring 8 is screwed in the screw hole, whose head is enclosed by a guide 6. After a manifold 2 and the carbureter 1 are installed, to adjust the adjusting screw 7, a tool such as a screwdriver must be inserted into the slanted guide 6 so that users' access to the adjusting screw 7 can be prevented. |
