Sanshin Kogyo Kabushiki Kaisha

Yoshihide Fukuda

Shigeyuki Ozawa

Yoshihiro Gohara

Yoshihiro Sakurai

Tetsuya Ishino

Kouji Abe

An induction system for a watercraft includes a first intake air chamber communicating with at least one combustion chamber of an engine of the watercraft, and a second intake air chamber communicating with the first intake air chamber via a conduit. The second intake air chamber may be arranged in various orientations and/or with various other features which improve attenuation of induction noises and/or the preclusion of water from entering the engine through the induction system.

Air induction system for small watercraft

A number of exhaust systems for watercraft propelled by a propulsion unit contained within a tunnel formed in the underside of the hull. This tunnel has an opening through the side of the hull and exhaust gases are delivered to the tunnel from the engine through an exhaust system having an exhaust opening communicating with the tunnel. Various flow controlling arrangements are provided for controlling the flow through one or all of the openings so as to assist in exhaust silencing without significantly increasing back pressure.

Exhaust system for watercraft

An improved exhaust system and bearing arrangement for a small displacement outboard motor that is rotatable through substantially 360 degrees for reverse operation. The drive shaft housing is formed with a reduced diameter cylindrical portion that is journaled within the swivel bracket by a bearing arrangement comprised of plastic elements and O-ring elements. The engine has an exhaust system with an exhaust pipe that at least in part encircles the drive shaft and which extends into the drive shaft housing below at least one the bearings to provide sufficient length for tuning and to avoid undue heating of the bearing.

Growing community of inventors

Hamamatsu, Japan

Yoshihide Fukuda