Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 185Get this manual
DIRECT FUEL INJECTION
FUEL REGULATOR REMOVAL
1Remove screws securing regulator and remove regulator2Inspect regulator diaphragm for cuts or tears3Inspect regulator housing O-ring for cuts and abrasionsReplace components as required
aScrewsFuel RegulatorDiaphragmSpringCupO-Ring
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FUEL REGULATOR INSTALLATION
NOTE: Apply light coat of 2-4-C wTeflon to diaphragm surface and O-ring to aid in the retention of diaphragm and O-ring on fuel rail during reassembly1Position diaphragm on fuel rail2Position O-ring on fuel rail3Position spring and cup onto diaphragm