Honda 1990 Accord Sedan Owner's Manual page 95

Air and Fuel Filters
Air Filter
Replace the air filter every 24 months or 30,000 miles (48,000
km), whichever comes first (more often in extremely dusty
conditions).
Loosen the attaching bolts, then remove the cover.
Remove the air filter and replace it with a new filter. Reinstall
the cover and tighten the bolts.
BOLTS
Fuel Filter
The fuel filter is located in the engine compartment, on the
right center of the firewall. It should be replaced at 60,000
miles (96,000 km) or 48 months whichever comes first, or any
time you suspect contaminated gas may have clogged it.
CAUTION: Because the fuel system is under pressure, the
filter should be replaced only by a qualified Honda technician.
FILTER