Patent ID: 7090552
Filing Date: 2006-08-15
Classification: F02M

Abstract:
1. An outboard motor comprising a cowling, an upper drive unit positioned below said cowling, a bracket assembly connected to said upper drive unit, said bracket assembly comprising a tilt shaft, an engine positioned within said cowling, said engine comprising a generally vertically extending crankshaft and an engine body comprising a combustion chamber, an air induction system comprising a plenum chamber, an intake runner extending between said plenum chamber and said combustion chamber, said plenum chamber comprising a lower surface, said intake runner communicating with and extending from said plenum chamber generally above said lower surface such that a step is defined between said lower surface and inner surface of said intake runner, the step defining a transition from the lower surface of the plenum chamber up to the inner surface of the intake runner, and a groove formed in a section where the intake runner extends from the plenum chamber and extending between said step and the inner surface to allow movement of pooled residual liquid fuel from said plenum chamber to said intake runner, wherein a substantial portion of the groove extends diagonally relative to said step and a section of the inner surface proximal said step.