Spark Plug Removal/Installation

CAUTION:

If a spark plug that is not as specified is installed, engine performance will be deteriorated. Install only the specified spark plug when replacing.

Disconnect the negative battery cable.
CAUTION:
- Removing the fresh-air duct from the air cleaner case may damage the fresh-air duct. Remove the fresh-air duct and the air cleaner case as a single unit except when the fresh-air duct is to be replaced with a new one.
Remove the fresh-air duct and air cleaner as a single unit. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
Remove the ignition coils. (See IGNITION COIL REMOVAL/INSTALLATION .)
Remove the spark plugs using a plug-wrench.
Install in the reverse order of removal.
Tightening torque

15-22 N.m {1.6-2.2 kgf.m, 12-16 ft.lbf}