Abstract: A power trim and shock absorbing system for outboard motors. A pair of combined trim positioning and shock absorber cylinder units are mounted within the side arms of a transom bracket assembly of an outboard motor. A manifold within the assembly coupled the units to a supply within the boat. A hydraulic manifold is pivotally mounted and attached to the lower end of the cylinder units with hose connections directly to lower side ends of the double walled cylinders to maximize the power stroke. The hose system includes passageways formed directly in the lower mounting bolts for the transom side members to minimize fluid leakage areas and damage to the boat transom. Down trim limit cams are pivotally located within the swivel assembly on a rotating rod and cooperate with aligned motor arms to set the minimum trim down position. A trailing bar is pivotally interconnected to the motor unit between the power cylinder units. An over-center control link is coupled to the bar by a spring.

Abstract: In an outboard motor, the engine exhausts through the drive shaft housing in which an exhaust tube directs the gases into a lower propeller unit secured to the housing. The exhaust tube has support lugs on the opposite top sides. Bushings encircle each lug and they rest in receptacles on the upper interior portions of the housing. An adapter plate is secured to the housing, clamps the lugs in place and moves the lower end of the tube into sealing relationship within a lower bushing within the housing. The lower bushing is a rubber-like annular bushing having a projecting ledge aligned with the lower end of the exhaust tube. The inner wall of the bushing has an inwardly and downwardly extended lip deflected and sealing with the side of the exhaust tube.