| 摘要 |
PROBLEM TO BE SOLVED: To prevent the function of a oxygen sensor from going down due to an overage of oil quantity even in the case where oil in an oil tank is overflown from a breather hose. SOLUTION: In this outboard motor, provided with a two-cycle internal combustion engine 13 with an oxygen sensor 70 detecting oxygen content in a cylinder, it supplies a fuel supply system with oil from an oil tank 75 set up in this two-cycle internal combustion engine 13, while it attached a tip part 500a of a breather hose 500 installed in the oil tank 75, to an intake silencer, and the tip part 500a of the breather hose 500 is installed in a lower position than a lower end of intake passage 70 of the cylinder with the oxygen sensor 70. |
