Sanshin Kogyo Kabushiki Kaisha

Yamaha Hatsudoki Kabushiki Kaisha

Tomonori Suzuki

Makoto Toyohara

An improved outer cowling arrangement for the power head of an outboard motor in which both the tray and top housing are formed from a synthetic resin for improving silencing. To insure a good fit and sealing, a supporting member and retaining member are affixed to each other and the supporting member is carried by one of the portions. Releasable latching means are carried by the other portion to engage the retainer member for holding the cowling portions together. The top housing has an inclined forward face in which a panel is positioned for passing the starting handle and starting rope. A guide defines a path of movement for the starting rope that is perpendicular to this inclined surface so that the motor can easily be started from a higher level, for example, when used as an auxiliary power source for a sailboat.

Outboard motor

Two embodiments of flywheel covers for outboard motors that are readily removable from their connection to the motor without special tools so as to facilitate emergency starting.

Flywheel magneto cover for marine propeller engine

A water-cooled, four-cycle internal combustion engine for an outboard motor having improved means for cooling the exhaust gases and specifically the exhaust gas passages of the cylinder head and cylinder block before discharge of the exhaust gases to the atmosphere.

Water-cooled four-cycle internal combustion engine for outboard motors

A compact improved four-cycle internal combustion engine of the water-cooled type for use with an outboard motor. The engine includes an exhaust arrangement wherein the exhaust gases are returned from the cylinder head to the cylinder block in proximity to a cooling jacket for cooling the exhaust gases before delivery into the lower unit. In addition, the cooling jacket and method of casting the cylinder head provides an opening in which a sacrificial anode may be placed to protect the engine from corrosion, particularly when operated in salt water. The engine is given a compact arrangement, in part, by positioning the thermostat of the cooling system in the area between the driving and slack sides of the belt that drives the overhead camshaft. The lubricating system also includes a baffled cover plate for the camshaft that receives oil flung from the camshaft and redistributes it to the valve train for lubrication.

Water cooled, four-cycle internal combustion engine for outboard motors

Several embodiments of outboard motors incorporating improved arrangements for lubricating the cam lobes and associated components of the camshaft that is relatively independent of the pressure lubricating system of the engine. In each embodiment, a porous member is saturated with lubricant and engages the cam lobe surface so as to lubricate it even immediately upon starting.

Growing community of inventors

Hamamatsu, Japan

Tomonori Suzuki