Mercury 150 EFI Service Manual page 270

FUEL INJECTION
Engine Head Temperature Sensor Removal
ANALOG TEMPERATURE SENSOR
1. Remove screw and retaining plate.
2. Disconnect bullet connector and remove sensor.
DIGITAL TEMPERATURE SENSOR
1. Disconnect wire harness for PORT and STARBOARD sensors
e
b
d
a -
b -
c -
d -
Engine Head Temperature Sensor Installation
ANALOG TEMPERATURE SENSOR
1. Install sensor into pocket.
2. Secure sensor with retainer and screw. Ground (BLACK) lead of sensor is secured with
retainer screw. Torque retainer screw to 16.5 lb. ft. (22.4 Nm).
3. Reconnect sensor bullet connector.
DIGITAL TEMPERATURE SENSOR
1. Install sensors into cylinder heads. Torque sensors to 14 lb. in. (1.6 Nm).
2. Reconnect sensor harness connectors.
Page 3B-38
f
a
c
Bullet Connector
Analog Temperature
Sensor
Retainer
Retainer Screw
g
e
58893
e - Digital Temperature
Sensor
f - Port Sensor Harness
g - Starboard Sensor Har-
ness
90-883728 JULY 2001