| 摘要 |
A liquid tank cap (50) for a working machine engine is provided. The liquid tank cap opens and closes a filling opening (43) of a tip end portion of a refilling pipe (40) of a liquid tank. The liquid tank cap (50) includes an upper wall (53) that covers the filling opening (43), a fitting portion (54) that engages with an inner surface of the filling opening (43) and protrudes from the upper wall (53), and a peripheral wall (70,70a) that covers an outer circumference of the refilling pipe (40) in a state where the liquid tank cap (50) is attached to the filling opening (43). |
