Mercury 225 Manual page 151

PRIMING OIL INJECTION PUMP
Before starting the engine for the first time, prime the oil injection
pump. Priming will remove any air that may be in the pump, oil
supply hose, or internal passages.
a
a - Oil supply hose
b - Oil injection pump
IMPORTANT: Fill the engine fuel system with fuel before priming
the oil injection pump. Otherwise, the fuel pump will run without
fuel during the priming process and may be damaged.
1. Fill the fuel system.
a. Connect fuel hose.
b. Fill the fuel system by squeezing the primer bulb.
c. Position the fuel line primer bulb so the arrow on the side
of the bulb is pointing up. Squeeze the fuel line primer
bulb until it feels firm.
eng
OUTBOARD INSTALLATION
b
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