Fuel Rail; Fuel Rail Removal - Mercury 25 EFI Service Manual

Service Procedures
7. Install the air horn to the throttle body.
8. Secure the air horn to the bracket with two bolts. Tighten the bolts to the specified torque.
b
a
Description
Bolts securing the air horn (2)
9. Install the IAC. Refer to Section 3C ‑ Idle Air Control (IAC).
10. Install the wire harness. Refer to Section 2B ‑ Engine Wire Harness.
11. Install the timing belt cover and the recoil assembly. Refer to Section 8 ‑ Manual Starter.

Fuel Rail

Fuel Rail Removal

Performing service or maintenance without first disconnecting the battery can cause product damage, personal injury, or
death due to fire, explosion, electrical shock, or unexpected engine starting. Always disconnect the battery cables from the
battery before maintaining, servicing, installing, or removing engine or drive components.
Fuel is flammable and explosive. Ensure that the key switch is off and the lanyard is positioned so that the engine cannot
start. Do not smoke or allow sources of spark or open flame in the area while servicing. Keep the work area well ventilated
and avoid prolonged exposure to vapors. Always check for leaks before attempting to start the engine, and wipe up any
spilled fuel immediately.
Failure to release pressure from the fuel system will result in fuel spraying out, which can cause a fire or explosion. Allow the
engine to cool completely and release all fuel pressure before servicing any part of the fuel system. Always protect eyes and
skin from pressurized fuel and vapors.
1. Disconnect the battery cable from the battery.
Page 3C-40
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WARNING
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WARNING
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CAUTION
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© 2016 Mercury Marine
a - Air horn
b - Crankcase breather hose
c - Bolts securing the air horn (2)
c
90-8M0105568 eng MARCH 2016
Nm lb. in. lb. ft.
6 53