Powerhead Components Removal - Mercury 25 EFI Service Manual

Cylinder Block/Crankcase
18. Lift the powerhead off the driveshaft housing.
a

Powerhead Components Removal

1. Remove the two fuel hoses to the fuel pump.
2. Remove the fuel cooling hose from the cylinder block.
3. Remove the bolt securing the high pressure fuel filter to the powerhead.
4. Remove the fuel hose from the fuel rail.
5. Remove the two bolts securing the fuel cooler to the mounting bracket.
6. Remove the bracket securing the fuel filter to the powerhead.
7. Remove the intake manifold. Refer to Section 3C ‑ Service Procedures.
8. Remove the timing belt. Refer to Section 2C ‑ Timing, Synchronizing, and Adjustments.
a
b
c
a - High pressure fuel return to the fuel pressure regulator
b - Fuel hose from 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 from the cylinder block
g - Fuel filter
h - Fuel cooler
i - Fuel pump
j - Intake manifold
k - Timing belt
9. Remove the cylinder head. Refer to Section 4B ‑ Cylinder Head.
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h
g
f
e
d
© 2016 Mercury Marine
a - Powerhead mounting bolts (3 each side)
k
b
90-8M0105568 eng MARCH 2016
j
i
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