Forester AWD F4-2.5L DOHC (1998)
1) Disconnect battery ground cable.
2) Disconnect mass air flow sensor connector.
3) Remove four clips securing air cleaner upper cover.
4) Loosen the clamp screw and separate air cleaner upper cover from air intake duct.
5) Remove air cleaner element and air cleaner case.
6) Remove #3 spark plug cord by pulling boot, not cord itself.