38889 Mercruiser CLAMP, EXHAUST BELLOWS

Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component.
There are three different types of secondary fuel filters that can be installed. Turn the valves for the fuel lines (if equipped) to the OFF position before performing this maintenance. Place a tray under the fuel filter in order to catch any fuel that might spill. Clean up any spilled fuel immediately.Type 1 Secondary Fuel Filter
Clean the outside body of the filter assembly.Remove the Element
Illustration 1 g03088718
Typical example
Install a suitable tube onto drain (4). Open the drain valve (3). Rotate the drain valve counterclockwise. Two full turns are required. Loosen vent screw (1).
Allow the fuel to drain into the container and remove the tube.
Tighten the vent screw (1) securely.
Remove the filter bowl (2). Rotate the filter assembly counterclockwise in order to remove the assembly.
Illustration 2 g02546456
Typical example
Rotate the filter element (5) counterclockwise and remove the filter element. Clean the filter bowl. Install the Element
Illustration 3 g03088837
Typical example
Locate the thread (7) in the filter element onto the threads (8). Spin on the element and tighten the drain valve (3) by hand.
Lubricate the O ring seal (6) with clean engine oil. Do NOT fill the filter bowl (2) with fuel before the filter assembly is installed.
Do not use a tool in order to install the filter assembly. Tighten the assembly by hand. Install the filter bowl (2). Turn the filter bowl clockwise until the filter bowl locks into position against the stops.
If equipped, turn the fuel supply valve to the ON position and remove the container.
The primary fuel filter and the secondary fuel filter must be replaced at the same time. Refer to the Operation and Maintenance Manual , "Fuel System Primary Filter (Water Separator) Element - Replace".
Prime the fuel system. Refer to the Operation and Maintenance Manual, "Fuel System - Prime" for more information. Type 2 Secondary Fuel Filter
Illustration 4 g03721946
Typical example
Clean the outside body of the filter assembly. Install a suitable tube onto drain (2). Rotate the drain valve (1) counterclockwise. Allow the fuel to drain into the container and remove the tube.
Remove the filter bowl (6) from the filter base (3). Press on the element (4). Rotate the element counterclockwise in order to release the element for the filter bowl and remove the element from the bowl. Discard the used element.
Illustration 5 g03721948
Typical example
Remove the O ring (5) from the filter bowl and clean the filter bowl.
Install a new O ring seal (5) to the filter bowl (6).
Locate a new filter element (4) into the filter bowl. Press on the element and rotate the element clockwise in order to lock the element into the filter bowl.
Install the filter bowl (6) into filter base (3).
Tighten the filter bowl by hand until the filter bowl contacts the filter head. Rotate the filter bowl through 90 degrees. Note: Do not use a tool to tighten the filter bowl.
If equipped, turn the fuel supply valve to the ON position and remove the container.
The primary fuel filter and the secondary fuel filter must be replaced at the same time. Refer to the Operation and Maintenance Manual , "Fuel System Primary Filter (Water Separator) Element - Replace".
Prime the fuel system. Refer to the Operation and Maintenance Manual, "Fuel System - Prime" for more information. Type 3 Spin - On Fuel Filter
Illustration 6 g03721949
Typical example
Clean the outside body of the filter assembly. Install a suitable tube onto drain (2). Rotate the drain valve (1) counterclockwise. Allow the fuel to drain into the container and remove the tube. Ensure that the fuel drain (2) on the new spin-on filter is closed.
Illustration 7 g03721952
Typical example
Use a suitable tool in order to remove the spin-on filter (5) from the filter base (3).
Lubricate the sealing ring (4) with clean engine oil.
Install the spin-on filter (5) into filter base (1).
Tighten the spin-on filter by hand until the sealing ring contacts the filter head. Rotate the spin-on filter through 90 degrees.
If equipped, turn the fuel supply valve to the ON position and remove the container.
The primary fuel filter the secondary fuel filter must be replaced at the same time. Refer to the Operation and Maintenance Manual , "Fuel System Primary