Patent ID: 7934964
Filing Date: 2011-05-03
Classification: B63H

Abstract:
1. An outboard motor comprising: an upper casing; a lower casing located below the upper casing; and an engine including a vertically arranged crankshaft, the engine being mounted above the upper casing; wherein rotation of the crankshaft is transmitted to a drive shaft, a rotational speed of the crankshaft is changed by a transmission mounted on the drive shaft, and a rotational force generated by the crankshaft is transmitted to a propeller shaft pivotally supported in the lower casing; the upper casing includes an upper side casing and a lower side casing; a mating surface portion between the upper side casing and the lower side casing is laterally wider than an upper section and a lower section of the upper casing; a divider is arranged to divide an inside of the upper casing into a front chamber and a rear chamber, and the divider is defined by a divider of the upper side casing and a divider of the lower side casing joined together; and a bolt seat arranged to join the divider of the upper side casing and the divider of the lower side casing is provided in the mating surface portion, and a joined surface of the divider is sealed.