Temperature Sensor Removal; Engine Head Temperature Sensor Installation - Mercury 150 EFI Service Manual

IGNITION

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.
2. Unscrew sensor from cylinder head.
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 2A-36
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