Mercury Optimax 250 Manual page 47

Engine Off (No Pressure)
1
1
9
9
8
8
1 - Top Cover
2 - Spring Retainer (not shown)
3 - Spring
4 - O-ring
5 - Diaphragm (at rest) Seat
90-888438 JUNE 2002
2 2 3 3
4
4
5
5
6
6
7
7
Engine at Operating Pressures
1
1
9
9
8
8
6 - Air Rail
7 - Air Passage (from Air Compressor)
8 - Fuel Inlet Passage (from Electric
Fuel Pump)
9 - Diaphragm Assembly
DIRECT FUEL INJECTION
2
2
3
3
4
4
5
5
6
6
7
Page 3B-47