Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to start a carbureted, electric start outboard motor [title] Check the oil level on four-stroke motors. [step] Make sure there is fuel in the tank and the fuel tank vent is open and clear. [title] Squeeze the primer bulb on the fuel line repeatedly until it is firm.

Ending1: [step] Apply the oil to the starter housing of the first carbureted motor and a blob of oil is inserted under the engine. Ensure one that is a light shade of green is on the oil surface and slightly darker at the oil pan oil plate. Ending2: [step] Verify that fuel in the tank is in the tank with the oil level medium and suitable. [title] Place the fuel tank onto another 3-stroke motor if it is at the operator area of the engine. Ending3: [step] It may differ depending on what you are using the carbureter for. If it is not prime, use a matching amount. Ending4: [title] Move the throttle into the hi-idle position. [step] On some controls, this is a lever beside the throttle/shift control that is lifted up far as it will go.

Answer format: ending1/ending2/ending3/ending4