Exhaust gas from an engine passes through a lower unit, and passes through a propeller boss coupled to a propeller shaft to be discharged into water. An outside diameter of a front end portion of the propeller boss is set to be equal to or larger than an outside diameter of a rear end portion of a gear case in the lower unit.
Exhaust structure of outboard motor
2015-11-03
Patent
Electronic Resource
English
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |