How do you replace spark plugs 1994 Mazda b4000?

To replace the spark plugs on a 1994 Mazda B4000, first, ensure the engine is cool and disconnect the negative battery cable. Remove the spark plug wires carefully, noting their order for reinstallation. Use a spark plug socket and ratchet to unscrew the old spark plugs, then install the new plugs by hand to avoid cross-threading before tightening them with the socket. Finally, reconnect the spark plug wires in the correct order and reconnect the battery.