Installation; Water-Separating Fuel Filter - Mercury 4.2 Diesel Operation & Maintenance Manual

Installation

1. Slide the filter element into the air filter housing. Ensure that the element is seated fully into the air filter housing.
a
NOTE: The warning labels on the air filter housing must be visible after the air filter housing is installed.
2. Install the air filter housing on to the turbocharger inlet.
3. Torque the air filter housing clamp.
Description
Air filter housing clamp
4. Install the oil separator vent house. Tighten the oil separator vent hose clamp securely.
b
a
d
Water‑Separating Fuel Filter
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.
Water entering the fuel injection system will cause corrosion and rusting of the injectors and other components, disabling the
fuel injection system. Check daily for water in the water‑separating fuel filter and have the engine inspected immediately if
there is evidence of water in the fuel system.
IMPORTANT: Use a suitable container to collect fuel. Clean up any spills immediately and dispose of fuel in a safe manner in
accordance with all local, federal, and international regulations.
90-8M0113988 DECEMBER 2015
eng
a - Air filter housing
b - Air filter element
b
25893
a - Oil separator vent hose
c
b - Air filter housing
c - Turbocharger
d - Clamp
d
25881
WARNING
!
NOTICE
Section 4 - Maintenance
Nm lb. in.
3.4–6.8 30–60
lb. ft.
Page 47