SPARK PLUG REMOVAL/INSTALLATION[ZJ, ZY, Z6]
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1. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION[ZJ, ZY, Z6].)
2. Disconnect the negative battery cable.
3. Remove the air cleaner (except U.K.). (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION[ZJ, ZY, Z6].)
4. Set the air cleaner cover out of the way (U.K. specs).
5. Remove the air cleaner case (U.K. specs). (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION[ZJ, ZY, Z6].)
6. Remove the ignition coil. (See IGNITION COIL REMOVAL/INSTALLATION[ZJ, ZY, Z6].)
7. Remove the spark plugs using a plug-wrench.
8. Install in the reverse order of removal.