Mercury OptiMax 250 - Page 44

DIRECT FUEL INJECTION
Page 3B-44
90-888438 JUNE 2002
Regulator Closed Regulator Open
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1-Top Cover
2-Expansion Plug
3-Spring Retainer
4-Vent
5-Spring
6-Diaphragm Seat
7-Air Rail
8-Air Passage (from Air Compressor)
9-Excess Air Passage (to Exhaust Adaptor)
10 - Fuel Inlet Passage (from Electric Fuel Pump)
11 - Diaphragm Assembly
12 - Calibration Screw (Do Not Turn)