Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 212Get this manual
OIL INJECTION
Priming Procedure Method 1
METHOD SHIFT SWITCH ACTIVATION PRIME PROCEDURE
Before starting engine for the first time, prime the oil pumpPriming will remove any air that may be in the pump, oil supply hose, or internal passagesaOil Injection PumpOil Supply Hose
CAUTION