How do you change the spark plugs in a 1998 Lexus Ls 400?

Remove the air intake ducting.

Remove the top engine plastic cover.

Remove the black plastic covers over the spark plugs & wires. (They're about 2 ft long, grooved, run from front to rear and also cover the distributors & timing belts)

Gap new plugs to 1.1mm (0.043 in.)