Mercury 305 CID, Service Manual, Page: 702 / 967

ELECTRONIC FUEL INJECTION (MULTI-PORT AND THROTTLE BODY) - 5E-161 90-823225--1 1096
1 - Flame Arrestor
2 - Flame Arrestor Clamp
3 - Throttle Body
4 - Throttle Body Gasket
5 - Manifold Absolute Pressure (MAP) Sensor
6 - Plenum
7 - Fuel Rail Fitting (2)
8 - Fuel Line
9 - Screw (2)
10- Fuel Rail (2)
11- Fuel Damper
12- Fuel Rail Fitting (2)
13- Schrader Valve
14- Fuel Line
15- Fuel Injector (8)
16- Manifold
17- Engine Coolant Temperature (ECT) Sensor
18- Inlet Fuel Fitting From Cool Fuel System
19- Fuel Line - From Front Of Starboard Fuel Rail To Rear Of
Port Fuel Rail
20- Fuel Line - From Rear Of Starboard Fuel Rail To Front Of
Port Fuel Rail
a - Earlier Fuel Hose System
b - Cool Fuel System
Fuel Pressure Relief Procedure
NOTICE
Refer to “Service Precautions,” in “Repair
Procedures,” BEFORE proceeding.
1. Disconnect electrical connector at fuel pump.
2. Crank engine for ten seconds (if engine starts al-
low it run until it dies) to relieve any fuel pressure
in the system.
Multi-Port Components
Flame Arrestor
NOTICE
Refer to “Service Precautions,” in “Repair
Procedures,” BEFORE proceeding.
REMOVAL
Remove four flame arrestor mounting cap nuts and
remove flame arrestor from throttle body.
72790
b
a
a - Flame Arrestor
b - Cap Nuts (4)
CLEANING AND INSPECTION
Clean flame arrestor in solvent and dry with com-
pressed air.
INSTALLATION
1. Install flame arrestor to throttle body.
2. Apply Loctite 242 to threads of studs. Install four
flame arrestor mounting cap nuts. Torque cap
nuts to 50 lb. in. (6 N·m).