Mercury 150 Operation, Maintenance And Installation Manual page 47

4. Set the lanyard stop switch to the RUN position. Refer to General
Information ‑ Lanyard Stop Switch.
5. Shift the outboard to the neutral (N) position.
6. For the initial start of a new engine, or for an engine that ran out of fuel or
was drained of fuel, the fuel system should be filled as follows:
a. Squeeze the fuel line primer bulb until it feels firm.
b. Turn the ignition key switch to the ON position for three seconds. This
operates the electric fuel pump.
c. Turn the ignition key switch back to the OFF position, and squeeze the
primer bulb again until it feels firm. Turn the ignition key switch to the
ON position again for three seconds. Continue this procedure until the
fuel line primer bulb stays firm.
7. Do not advance the throttle‑only feature on the remote control for starting.
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