Mercury 25 EFI Service Manual page 225

2. Install a fuel pressure gauge to the fuel rail Schrader valve and release fuel into an appropriate container.
a
3. Open the fuel hose clamp to allow access to the fuel hose.
b
a
4. Disconnect the fuel injector harness connectors from the three fuel injectors.
5. Remove the three bolts securing the fuel rail to the intake manifold. Do not lose the clamp on the top bolt securing the fuel
rail to the intake manifold.
6. Pull the fuel rail assembly off the intake manifold.
a
7. Remove the spring clamp securing the fuel hose to the fuel rail inlet tube.
90-8M0105568 eng MARCH 2016
a - Schrader valve
10216
d
c
11634
a - Fuel injector harness connector (3)
b - Fuel rail bolt (3)
c - Clamp
c
b
11635
© 2016 Mercury Marine
Service Procedures
a - Fuel pump
b - Crankcase ventilation hose
c - Fuel hose clamp
d - Fuel rail
Page 3C-41