| 摘要 |
An engine (1) includes a crank chamber (7) in which pressure fluctuation occurs and a carburetor (25) including a diaphragm fuel pump (100). The diaphragm fuel pump (109) includes a pump chamber (1108) configured to suck in and eject fuel and a diaphragm chamber (110) to which a pressure that drives the pump chamber (1108) is supplied. The diaphragm chamber (110) and the crank chamber (7) communicate with one another in a state in which a negative pressure is created in the crank chamber (7). |
