Patent ID: 6082220
Filing Date: 2000-07-04
Classification: F02B,F16D,F16H,Y10T

Abstract:
A power transmission for a 4-cycle engine having a crankcase and a crank shaft supported within said crank case comprising:a gear case;a power transmitting shaft supported to said gear case, said gear case mounted to the crank case;a pinion gear provided on an end of the crank shaft; anda reduction gear provided on the power transmitting shaft, said reduction gear and pinion gear meshed to each other, thereby transmitting a power of the crank shaft to the power transmitting shaft,wherein the gear case includes a mounting surface for mounting the gear case to the crank case, which said mounting surface includes a plurality of mounting holes formed therein, said mounting holes positioned around said gear case such that each of said mounting holes is disposed in a respective position which is point symmetrical with respect to the crank shaft, and wherein the mounting surface is disposed in a position which is line symmetrical with respect to the crank shaft for all pairs of said mounting holes which define a line passing through a center of said crank shaft.