Honda 1998 Accord Coupe Owner's Manual page 226

Spark Plugs (6-cylinder Models)
The spark plugs in your vehicle are a
special platinum-tipped design for
longer life. The spark plugs should
be replaced according to the time
and distance recommendations in
the maintenance schedule.
Replacement
COVER
1. Remove the cover on the front
cylinder bank by pulling on the
front edge.
Maintenance
SPARK PLUG CAP
2. Clean up any dirt and oil around
the spark plug caps.
3. Remove the spark plug cap by
pulling it straight out.
4. Remove the spark plug with
a five-eighths inch (16 mm) spark
plug socket.
5. 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.