Mercury V8 300 User Manual

V8 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
PNK/WHT
PNK/WHT
PNK/LT GRN
PNK/LT GRN
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 G4D4 E4 H4
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
30
85
86
87
30
85
86
87
AB
87
30
8685
87
30
8685
A
B
C
D
E
F
G
H
1
2
3
4
A
B
C
D
E
F
G
H
H
A
4
1
B1 B2
B3
B4 B5 B6
C1
C2 C3 C4 C5
A1 A2 A3 A4 A5 A6
C6
AB
AB
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
1
3
5
7
2
4
6
8
9
10
11
12
13
14
15
65384
Troubleshooting and Diagnostics
Page 7B-8 © 2018 Mercury Marine 90-8M0146617 eng JULY 2018

Mercury V8 300 Specifications

General

Horsepower	300 HP
Displacement	4.6 L
Full Throttle RPM Range	5200-6000 RPM
Fuel Induction System	Electronic Fuel Injection (EFI)
Gear Ratio	1.75:1
Starting	Electric
Shaft Length	20 in, 25 in, 30 in
Warranty	3-Year Limited Warranty
Engine Type	V8
Fuel Type	87 Octane
Bore x Stroke	92 mm x 86 mm