Mercury V8 250 User Manual

Terminal Test Probe Kit Bosch P/N MM‑ 46523
a - Water‑in‑fuel sensor connector
b - PCM connector B
c - PCM connector C
Connector Pin Wire Color Function PCM
53172
B
A
A Tan/purple Water‑in‑fuel signal BD4
B Black/orange Sensor ground A (–) CE1
WIF Sensor Removal and Installation
IMPORTANT: The engine mounted water‑separating fuel filter WIF sensor is not replaceable as an individual component. It
must be replaced as part of the fuel filter assembly. Refer to the appropriate service manual.
100A
BLK/ORN
TAN/PPL
BLK/ORN
B
A
H4
E1
A1
D4
M4
A1
A B
C
D E F G H
J
K
AB
C
DEFGH
J
K
1
3
2
4
L
M
L
M
A
B
C
D
E
F
G
H
1
2
3
4
A
B
C
D
E
F
G
H
M
A
4
1
A
H
1
4
65465
a
b
c
Sensors
90-8M0146617 eng JULY 2018 © 2018 Mercury Marine Page 5A-45

Mercury V8 250 Specifications

General

Engine Type	V8
Horsepower	250 HP
Displacement	4.6L
Fuel Induction System	Electronic Fuel Injection (EFI)
Steering	Hydraulic Steering
Gear Ratio	1.75:1
Cylinders	8
Starting	Electric Start
Full Throttle RPM Range	5200-6000 RPM
Alternator Amp	85 amp
Shaft Length	25 in
Weight	527 lbs
Fuel Type	Unleaded 87 octane minimum