Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 197Get this manual
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DIRECT FUEL INJECTION
mTracker ValveFuel InletFuel Regulator [89 psi (613.5 13.8 kPa)]Air Regulator [79 psi (544.0 13.8 kPa)]Air [79 psi (544.0 13.8 kPa)]Excess Air Return to Exhaust Adap