Mercury 25 EFI Service Manual page 270

Cylinder Block/Crankcase
7. Connect the fuel hose to the fuel pump outlet.
a
b
c
a - High pressure fuel return to the fuel pressure regulator
b - Fuel hose to the fuel pump pressure outlet
c - High pressure fuel filter
d - High pressure fuel hose to the fuel rail
e - Fuel hose to the fuel pump vacuum inlet
f - Fuel cooler water delivery hose to the cylinder block
g - Fuel filter
h - Fuel cooler
i - Fuel pump
j - Crankcase ventilation
k - Timing belt
8. Ensure the adapter plate surface and the powerhead mating surface is clear of debris.
9. Install a new powerhead gasket onto the adapter plate.
10. Install the powerhead onto the adapter plate.
11. Secure the powerhead to the adapter plate with six bolts (three each side). Tighten the powerhead mounting bolts to the
specified torque.
a
Description
Powerhead mounting bolts (3 each side)
Page 4A-28
h
g
f
e
d
20944
© 2016 Mercury Marine
k
b
a - Powerhead mounting bolts (3 each side)
Nm
30
90-8M0105568 eng MARCH 2016
j
i
20947
lb. in. lb. ft.
22