Honda 1998 Accord Coupe Owner's Manual page 224

Spark Plugs (4-cylinder Models)
The spark plugs in your vehicle
should be replaced according to the
time and distance recommendations
in the maintenance schedule.
Maintenance
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 with
a five-eighths inch (16 mm) spark
plug socket.
4. Put the new spark plug into the
socket; then screw it into the hole.
Screw it in by hand so you do not
crossthread it.