Patent ID: 8276274
Filing Date: 2012-10-02
Classification: B63H,Y10T

Abstract:
1. A method of assembling a marine outboard engine having: an engine casing; a first driveshaft having a first end and a second end, the first end having a first helical gear disposed thereon, and the second end having a first driving gear disposed thereon; a second driveshaft having a first end and a second end, the first end having a second helical gear disposed thereon, and the second end having a second driving gear disposed thereon; and a driven shaft having at least one driven gear disposed thereon; the method comprising: placing the first driveshaft in the engine casing such that the first helical gear is free to move in an axial direction relative to the engine casing; placing the driven shaft in the engine casing such that one of the at least one driven gear meshes with the first driving gear; placing the second driveshaft in the engine casing such that: rotating the driven shaft; measuring an axial displacement of one of the first and second helical gears with respect to the engine casing as a result of the rotation of the driven shaft; selecting a shim based at least in part on the measurement of the relative axial displacement; and placing the shim on the one of the first and second driveshafts at a position axially below the helical gear disposed on the one of the first and second driveshafts.