Mercury 25 EFI Service Manual page 144

Charging and Starting System
13. Remove the bolt securing the fuel cooler mounting bracket to the cylinder block.
a
b
14. Disconnect the high pressure fuel pump connector from the VST.
15. Open the clamp securing the engine harness and connectors.
16. Disconnect the oil pressure sensor connector.
17. Disconnect the trigger harness connector.
d
c
b
a
18. Disconnect the TPS harness connector.
19. Disconnect the MAT sensor harness connector.
20. Remove the bolt securing the engine harness ground wire to the bracket.
a
21. Disconnect the low oil pressure warning lamp bullet connectors.
Page 2B-32
c
d
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© 2016 Mercury Marine
a - Air vent assembly
b - Fuel cooler
c - Bolt securing the air vent assembly to the cylinder block
d - Bolt securing the fuel cooler mounting bracket to the
cylinder block
21195
b
a - TPS harness connector
b - MAT sensor harness connector
c - Bolt securing the engine harness ground wire
c
21196
90-8M0105568 eng MARCH 2016
a - High pressure fuel pump
connector
b - Harness clamp
c - Trigger harness
connector (red/yellow)
d - Oil pressure sensor
connector (brown/white)