Mazda 323 1988 Workshop Manual page 323

FUEL SYSTEM
4B
2. Disconnect the fuel main hose and return hose.
3. Remove the delivery pipe.
4. Remove the injector.
5. Install the injector, delivery pipe, throttle body in
the reverse order of removal.
Tightening torque:
Delivery pipe: 16.6-25.5 N.m
(1.9-2.6 m-kg, 13.7-16.8 ft-lb)
Note
a) O-ring of injector is not reuseable.
b) When install the injector, apply the gasoline
on the O-ring.
Fuel Filter (High Pressure)
The fuel filter should be replaced at intervals, follow-
ing the maintenance schedule.
To replace the fuel filter, proceed as follows:
1. Disconnect the fuel hoses.
2. Remove the fuel filter with the bracket.
3. Install a new filter and connect the fuel hoses.
48-Y