| 摘要 |
PURPOSE:To enable to easily drain the water remaining in a crank chamber by installing both a valve, which is opened by the positive pressure in the crank chamber, and a valve, which is opened by manual operation, in a drain passage connecting the bottom of the crank chamber and the outside. CONSTITUTION:When a engine starter is turned, fluctuating pressure consisting of both positive and negative pressure is generated. If an operation lever is pulled under this condition, a rod 9a of the second valve 9 moves in a void space 15 of a cover 10 via a wire 11a, overcoming the spring (14) force, thereby opening a hole 8a of a cover 8. In addition, on receiving the said positive pressure, the first valve opens a draining port 4a of a draining hole 4 which is provided in a supporting board 16 of a valve equipment 1. As a result, the water, which intruded from an air cleaner or a muffler into the crank chamber 2 and is remaining there, is drained into outside the machine via a drain hole 4, a void space 7, a hole 8a, a void space 10a and a pipe 19. Accordingly, the water remaining in the crank chamber 2 can be drained easily, and consequently the engine can be restarted at once.
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