Mercury V8 250 User Manual

Fuel Injector Circuits
V6 Fuel Injector Circuits
104B
105A
105B
108B
109B
109A
106B
108A
RED/BLU
RED/WHT
RED/WHT
RED/PNK
RED/ORN
RED
BLK
PNK/BLU
PNK/BLU
PNK/RED
PNK/RED
PNK/ORN
PNK/ORN
BLK
YEL/BLK
YEL/BLK
RED/BLU
RED/WHT
RED
RED
RED/PNK
RED/ORN
RED/ORN
PNK/BRN
PNK/BRN
PNK
PNK
RED/ORN
RED/ORN
RED/ORN
RED/ORN
RED
PNK/YEL
YEL/PPL
PNK/PPL
PNK/PPL
YEL/PPL
PNK/YEL
20A
20A20A
A1
A2
A3
A4
A5
A6
B1
B2
B3
B4
B5
B6
C1
C2
C3
C4
C5
C6
A1 B1
C1
D1 E1 F1
G1
H1 A2 B2
C2
D2 E2 F2
G2
H2
A3 D3 E3
G3
B3
C3
F3 H3
A4 B4
C4
F4
G4
D4 E4 H4
A
B
A
B
A
B
A
B
A
B
A
B
A
B
30
85
86
87
30
85
86
87
87
30
8685
87
30
8685
B1 B2 B3 B4 B5 B6
C1
C2
C3
C4 C5
A1 A2
A3
A4 A5 A6
C6
AB
AB
AB
AB
AB
AB
86
30
87
85
87a
87
87a
86
85
30
RELAY KEY
Relay Components
as Viewed Separated
Relay
Connector
A
B
C
D
E
F
G
H
1
2
3
4
A
B
C
D
E
F
G
H
H
A
4
1
A
B
65385
1
3
5
2
4
6
7
8
9
10
11
12
13
Troubleshooting and Diagnostics
Page 7B-6 © 2018 Mercury Marine 90-8M0146617 eng JULY 2018

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