Outboard motor

An outboard motor comprising:

• an engine;
• a cooling water passage through which water flows from an inflow port, located in outside water outside the outboard motor, to an outflow port, via the engine;
• a pump that takes the outside water from the inflow port into the cooling water passage by being driven in conjunction with the engine;
• an inlet water passage that branches from the cooling water passage;
• an oil cooler that cools lubrication oil in the engine, the oil cooler including an inlet connected to the inlet water passage, a water-storing space into which water in the inlet water passage is taken from the inlet, and an outlet from which water in the water-storing space is discharged;
• an outlet water passage connected to the outlet;
• a first thermostat located in the cooling water passage and that increases and decreases a flow rate of water flowing through the engine;
• and
• a second thermostat located at the outlet or at the outlet water passage and that increases and decreases a flow rate of water flowing through the outlet water passage.