Personal watercraft

1. A personal watercraft including an engine mounted within a body defined by a hull and a deck covering the hull from above, the watercraft being configured to cool at least part of the engine and an auxiliary device using water from outside the watercraft, comprising:

a cooling water passage provided in the part of the engine and the auxiliary device, the water from outside the watercraft being supplied to the cooling water passage;

a coupling member forming a part of a liquid connecting coupler and provided to fluidically communicate with the cooling water passage, the coupling member having a connecting portion to which another coupling member forming another part of the liquid connecting coupler is removably attachable, and the coupling member being fixed such that the connecting portion is exposed outside the body; and

a lid member configured to open and close the connecting portion of the coupling member.

2. The personal watercraft according to claim 1 , wherein the cooling water passage is fluidically connected to the coupling member through a tube.

3. The personal watercraft according to claim 2 , wherein the tube is a water inspection tube used to detect the cooling water of the engine and the lid member is provided with a water inspection port through which the cooling water is discharged outside.

4. The personal watercraft according to claim 1 , wherein the connecting portion has an opening directed outside and fluidically communicates with the cooling water passage, and the lid member is configured to openably close the connecting portion of the coupling member by screwing a male screw formed on an outer peripheral face of the lid member to a female screw formed on an inner peripheral face of the connecting portion.

5. The personal watercraft according to claim 4 , wherein an outer peripheral edge of a flange portion of the lid member is configured to protrude radially outward relative to an outer peripheral edge of an opening end portion of the coupling member and the protruding outer peripheral edge has a convex and concave face for providing a non-slip surface.

6. The personal watercraft according to claim 1 , wherein the coupling member is provided so as to be covered by an openable cover.

7. The personal watercraft according to claim 1 , wherein the lid member is provided with a water inspection port through which the cooling water is discharged outside.

8. The personal watercraft according to claim 7 , wherein the water inspection port is provided forward of a seat straddled by a rider or a standing deck on the watercraft.

9. The personal watercraft according to claim 2 , wherein

the coupling member includes:

an insertion part having a flange portion at an end portion thereof and an insertion portion extending from the flange portion and connected to the tube; and

a cylindrical base part having a bottom portion, the base part including a penetrating hole formed at a center portion of the bottom portion thereof, through which the insertion portion is inserted, the bottom portion provided in an outer peripheral region of the penetrating hole being engageable with the flange portion such that the flange portion of the insertion part and the bottom portion of the cylindrical base part are rotatable relative to each other, the flange portion and the bottom portion being arranged in a longitudinal direction of the coupling member, and a female screw formed on an inner peripheral face of the cylindrical base part.