According to my owner's manual (97 DX hatch), the torque should be 13lb-ft. All 96-00 Civic CX, DX, LX should be the same because they have the same engine (D16Y7).
Tightening torque:
13lb-ft
Specifications:
NGK: ZFR5F-11
Denso: KJ16CR-L11
Spark plug gap:
1.1mm (0.04 in) +0/ -0.1mm
The...