Spark Plug: Replacement

Remove the battery and battery carrier.
Remove the air cleaner case.
Detach the connector from ignition coil.
Remove the ignition coil.

Fig 1: Identifying Bracket And Connector
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Remove the spark plug with a spark plug socket.

Fig 2: Removing Spark Plug Using Spark Plug Socket
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Tighten the new spark plug lightly with hand, and then secure with a spark plug socket to the specified torque.
NOTE:
- Be sure to place the gasket between the cylinder head and spark plug.
- If the torque wrench is not available, tighten the spark plug until gasket contacts cylinder head; then tighten further 1/4 to 1/2 turns.
Recommended spark plug:

NGK: SILFR6C11

Tightening torque:

21 N.m (2.1 kgf-m, 15.5 ft-lb)
Install the ignition coil.
Tightening torque:

16 N.m (1.6 kgf-m, 11.8 ft-lb)