850490 Mercruiser SHIELD

Table 1
Required Tools
Tool Part Number Part Description Qty
A 370-8376 Capping Kit 1
Ensure that all adjustments and repairs that are carried out to the fuel system are performed by authorized personnel that have the correct training.Before beginning ANY work on the fuel system, refer to Operation and Maintenance Manual, "General Hazard Information and High-Pressure Fuel Lines" for safety information.Refer to System 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.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Turn the fuel supply to the OFF position.
Refer to the Original Equipment Manufacturer (OEM) for the location of the assembly of the fuel priming pump.
Illustration 1 g06198462
Typical example
Make a temporary identification mark on the tube assemblies to show the correct position of the tube assemblies.
Place a suitable container below the assembly of the fuel priming pump to catch any fuel that might be spilled. Drain the primary filter. Refer to Operation and Maintenance Manual, "Fuel System Primary Filter (Water Separator) Element - Replace" for the correct procedure.
Disconnect the tube assemblies from connection (1) and connection (3). Use Tooling (A) to plug the tube assemblies and cap the connections.
Disconnect the OEM harness assembly from water in fuel sensor (6).
Remove filter canister (4) from filter head (2). Remove the primary filter from the canister. Remove the O-ring seal. Refer to Operation and Maintenance Manual, "Fuel System Primary Filter (Water Separator) Element - Replace" for further information.
If necessary, remove water in fuel sensor (6) from filter canister (4). Remove O-ring seal (5) (not shown).
Remove the bolts from filter head. Remove the filter head from the OEM bracket.Installation Procedure
Ensure that all adjustments and repairs that are carried out to the fuel system are performed by authorized personnel that have the correct training.Before beginning ANY work on the fuel system, refer to Operation and Maintenance Manual, "General Hazard Information and High-Pressure Fuel Lines" for safety information.Refer to System 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 all components are clean and free from wear or damage. If necessary, replace the assembly of the fuel priming pump.
Illustration 2 g06198462
Typical example
Position filter head onto the OEM bracket. Install the bolts to the filter head. Refer to the OEM for the correct torque value of the bolt.
Remove the plugs from the tube assemblies and caps connection (1) and connection (3). Connect the tube assemblies to the connections. Ensure that the tube assemblies are connected to the correct connections.
Install a new filter to filter canister (4) and install the filter canister to filter head (2). Refer to Operation and Maintenance Manual, "Fuel System Primary Filter (Water Separator) Element - Replace" for further information.
If necessary, install a new O-ring seal (5) (not shown) to water in fuel sensor (6). Install water in fuel sensor to filter canister (4). Hand tighten the water in fuel sensor.
Connect the OEM harness assembly to water in fuel sensor (6).
Turn the fuel supply to the ON position.
Prime the fuel system. Refer to Operation and Maintenance Manual, "Fuel System - Prime" for the correct procedure.