89491 4 Mercury KEY 1D

Contact with high pressure fuel may cause fluid penetration and burn hazards. High pressure fuel spray may cause a fire hazard. Failure to follow these inspection, maintenance and service instructions may cause personal injury or death.
Refer to Operation and Maintenance Manual, "General Hazard Information and High Pressure Fuel Lines" before adjustments and repairs are performed.
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 all adjustments and repairs are performed by authorized personnel that have had the correct training.
Illustration 1 g02293673
Typical example
Table 1
Specifications for 345-4146 Fuel Injection Lines Gp and 345-4147 Fuel Injection Lines Gp
Callout Part Number Part Name Specification Description
1 345-4146 Fuel Injection Lines Gp Torque to................... 55 N m (41 lb ft)
1 345-4147 Fuel Injection Lines Gp Torque to................... 55 N m (41 lb ft)
2 338-8797 Line As - Fuel Torque to................... 55 N m (41 lb ft) Removal Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 370-8376 Cap Kit 1
Contact with high pressure fuel may cause fluid penetration and burn hazards. High pressure fuel spray may cause a fire hazard. Failure to follow these inspection, maintenance and service instructions may cause personal injury or death.
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.
Note: Put identification marks on all hoses on all hose assemblies and on wires and all tube assemblies for installation purposes. Plug all hose assemblies and tube assemblies. Plugging all hose assemblies and tube assemblies will help to prevent fluid loss and helps to keep contaminants from entering the system.
Turn the fuel supply to the OFF position.
Turn the battery disconnect switch to the OFF position.
Remove the inlet air control (NRS Induction Mixer) and mounting bracket. Refer to Disassembly and Assembly, "Inlet Air Control (NRS Induction Mixer)" for the correct procedure.
Remove the crankcase breather cannister and tube assemblies. Refer to Disassembly and Assembly, "Crankcase Breather" for the correct procedure.
Illustration 2 g02177626
Cut cable straps (6) from the wiring harness assemblies.
Slide the locking tab for wiring harness connection (2) into the unlocked position. Remove wiring harness connection (2) from the pressure sensor.
Slide the locking tab for wiring harness connection (3) into the unlocked position. Remove wiring harness connection (3) from the pressure sensor.
Slide wiring harness connection (7) from the mounting bracket and position harness away from the inlet elbow.
Remove bolt (4) and bolt (8) from clips for tube assemblies.
Remove bolts (5) and remove manifold (1) from the inlet elbow.
Illustration 3 g02177627
Remove bolts (9) and remove inlet elbow (10) from the cylinder head.
Remove gasket (11).