887891 Mercury DAMPER

Note: Refer to Systems Operation, Testing, and Adjusting, "Cleanliness of Fuel System Components" for detailed information on the standards of cleanliness that must be observed during ALL work on the fuel system.
Ensure that the engine is stopped before any servicing or repair is performed.
Remove the Element (Type 1)
Turn the fuel supply valve (if equipped) to the OFF position before performing this maintenance.
Place a suitable container under the water separator to catch any fuel that might spill. Clean up any spilled fuel. Clean the outside body of the filter assembly.
Illustration 1 g06463260
Typical example
Install a suitable tube onto drain (3). Open the drain valve (2). Rotate the drain valve counterclockwise. Two full turns are required.
Loosen the vent screw (1).
Allow the fuel to drain into the container. If the fuel will not drain, loosen the vent screw on the secondary fuel filter.Note: In some applications, the vent screw on the secondary fuel filter will need to be open to drain the primary fuel filter.
Remove the tube from the drain valve.
Tighten the vent screw (1) to a torque of 2.5 N m (22 lb in). If necessary, tighten the vent screw on the secondary fuel filter. Tighten to a torque of 2.5 N m (22 lb in). Remove the wiring harness from connection (4).
Rotate filter bowl (6) counterclockwise and remove the filter bowl from assembly.
Illustration 2 g03858640
Typical example
Rotate the filter element (5) counterclockwise and remove the filter element . Clean the filter bowl.Remove the Element (Type 2)
Turn the fuel supply valve (if equipped) to the OFF position before performing this maintenance.
Place a suitable container under the water separator to catch any fuel that might spill. Clean up any spilled fuel. Clean the outside body of the filter assembly.
Illustration 3 g06463129
Typical example
Install a suitable tube onto drain (3). Open the drain valve (2). Rotate the drain valve counterclockwise. Two full turns are required.
Loosen the vent screw (1).
Allow the fuel to drain into the container. If the fuel will not drain, loosen the vent screw on the secondary fuel filter.Note: In some applications, the vent screw on the secondary fuel filter will need to be open to drain the primary fuel filter.
Remove the tube from the drain valve.
Tighten the vent screw (1) to a torque of 2.5 N m (22 lb in). If necessary, tighten the vent screw on the secondary fuel filter. Tighten to a torque of 2.5 N m (22 lb in). Remove the wiring harness from connection (4).
Rotate filter bowl (6) counterclockwise and remove the filter bowl from assembly.
Illustration 4 g06463169
Rotate the filter element (5) counterclockwise and remove the filter element . Clean the filter bowl.Install the New Filter Element (Type 1)
Illustration 5 g03086798
Typical example
Locate the thread in the new filter element (8) onto the threads (9). Spin on the filter element and tighten the drain valve (2) securely.
Lubricate the O ring seal (7) with clean diesel fuel. Do NOT fill the bowl with fuel before the assembly is installed.
Do not use a tool to install the filter assembly. Hand tighten the filter bowl (6). Install the filter bowl (6). Turn the filter bowl clockwise until the filter bowl locks into position against the stops.
Remove the container and dispose of the fuel in a safe place.
The secondary filter element must be replaced at the same time as the primary filter element. Also, the in-line filter must be changed. Refer to the Operation and Maintenance Manual, "Fuel System Filter - Replace".Install the New Filter Element (Type 2)
Illustration 6 g06463205
Typical example
Locate the thread in the new filter element (8) onto the threads (9). Spin on the filter element and tighten the drain valve (2) securely.
Lubricate the O ring seal (7) with clean diesel fuel. Do NOT fill the bowl with fuel before the assembly is installed.
Do not use a tool to install the filter assembly. Hand tighten the filter bowl (6). Install the filter bowl (6). Turn the filter bowl clockwise until the filter bowl locks into position against the stops.
Remove the container and dispose of the fuel in a safe place.
The secondary filter element must be replaced at the same time as the primary filter element. Refer to the Operation and Maintenance Manual, "Fuel System Secondary Filter - Replace".