Abstract: An outboard marine drive with an engine is described. The marine drive may include a drive housing with an upper drive housing and lower drive housing. The drive housing may be configured to be attached to a transom of a marine craft. An upper drive assembly may be located in the upper drive housing. A lower gear drive assembly may be located in the lower drive housing. A cone clutch may be located in the lower drive housing to engage the upper drive assembly with the lower gear drive assembly.

Abstract: A roller bearing drive assembly for a marine mud motor with an elongated drive tube containing a lubricant, the drive assembly configured for rotatably receiving a drive shaft including a propeller on the end. The drive assembly comprises a drive assembly housing containing an outer seal to restrict lubricant flow from the housing cavity, an inner seal to provide a lubricant chamber for pressurizing the lubricant, a bearing to rotatably connect the drive assembly housing to the drive shaft, and a seal cap to protect the outer seal from the elements.

Abstract: A roller bearing drive assembly for a marine mud motor with an elongated drive tube containing a lubricant, the drive assembly configured for rotatably receiving a drive shaft including a propeller on the end. The drive assembly comprises a drive assembly housing containing an outer seal to restrict lubricant flow from the housing cavity, an inner seal to provide a lubricant chamber for pressurizing the lubricant, a bearing to rotatably connect the drive assembly housing to the drive shaft, and a seal cap to protect the outer seal from the elements.

Abstract: A roller bearing drive assembly for a marine mud motor with an elongated drive tube containing a lubricant and for rotatably receiving a drive shaft including a propeller on the end. The drive assembly comprises a drive assembly housing having an upper end, lower end, and housing cavity. An outer seal is mounted in the lower end of the drive assembly housing and structured to stop lubricant flow from the housing cavity. A seal cap is mounted to protect the outer seal from the elements. An inner seal is provided, between the outer seal and the upper end of the drive assembly housing, and spaced apart from the outer seal to provide a lubricant chamber for pressurized lubricant. The pressurized lubricant in the lubricant chamber cannot escape because the two seals are installed in opposing directions allowing pressurized fluid to enter but not escape the lubricant chamber.