Honda 1994 Accord Coupe Owner's Manual page 151

Fuel Filter, Spark Plugs
Fuel Filter
The fuel filter should be replaced
every 4 years or 96,000 km (60,000
miles), whichever comes first.
Have a qualified technician change
the fuel filter. Since the fuel system
is under pressure, gasoline can spray
out and create a hazard if all fuel line
connections are not handled
correctly.
The filter may require replacement
sooner if you happen to buy one or
more tankfuls of contaminated
gasoline. Have the filter tested or
replaced if you suspect it has been
clogged by contaminants.
Maintenance
Spark Plugs
The original spark plugs in your car
need to be replaced every 2 years or
48,000 km (30,000 miles), whichever
comes first.
Replacement
SPARK PLUG CAP
1. Clean up any dirt and oil around
the spark plug caps.
2. Remove the spark plug cap by
pulling it straight out.
3. Remove the spark plug, using a 16
mm (5/8 inch) spark plug socket.