Mercury 150 EFI Service Manual page 338

7. Disconnect water pressure sensor (gray) hose and speedometer pressure sensor
(black) hose.
90-883728 JULY 2001
b
c
a - Water Pressure Sensor
b - Speedometer Pressure Sensor
c - Speedometer Sensor Hose (BLACK)(for Digital Gauges)
d - Water Pressure Sensor Hose (GRAY)(for Digital Gauges)
a
d
POWERHEAD
58773
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