Personal watercraft and engine mounted in personal watercraft

Internal-combustion engines – Igniters – Sparkers

Reexamination Certificate

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Details

C123S14300R, C439S125000

Reexamination Certificate

active

06886514

ABSTRACT:
Disclosed is an engine of a personal watercraft capable of preventing water ingress into a penetrating hole for attaching an ignition plug. The engine comprises a cylinder head, a cylinder head cover provided over the cylinder head, an ignition plug attached to the cylinder head, a penetrating hole formed to extend from an upper surface of the cylinder head cover to a lower surface of the cylinder head, for accommodating and attaching the ignition plug inside thereof, a connecting member connected to an upper end of the ignition plug and located inside the penetrating hole, for connecting a power supply to the ignition plug that activates the ignition plug, a closing member for creating a seal between the connecting member and the penetrating hole, and an air hole formed to extend obliquely downward from the penetrating hole so as to communicate with an outside of the cylinder head.

REFERENCES:
patent: 5146906 (1992-09-01), Agatsuma
patent: 5324207 (1994-06-01), Itoh et al.
patent: 5878706 (1999-03-01), Akamatsu
patent: 6591819 (2003-07-01), Tscherne et al.
patent: U03-92567 (1991-09-01), None
patent: 09189234 (1997-07-01), None
patent: 11-022604 (1999-01-01), None
patent: 2000-110660 (2000-04-01), None
patent: 2001-244133 (2001-09-01), None

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