Mercury 150 - Priming the Oil Injection Pump

OUTBOARD INSTALLATION
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2. Remove cap and fill engine oil tank with oil. Reinstall the fill cap.
a
b
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a - Engine oil tank b - Fill cap
PRIMING THE 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.
b
a
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a - Oil injection pump b - Oil supply hose
!
CAUTION
Avoid fuel pump damage. Always 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.
Prime the oil injection pump as follows: