Honda CBR600RR 2009 Owner's Manual page 134

Improperly tightened spark plugs can
damage the engine. If a plug is too loose,
a piston may be damaged. If a plug is too
tight, the threads may be damaged.
19. Reinstall the ignition coils.
20. Connect the ignition coil connectors to
the ignition coils as before removal.
21. Install the remaining parts in the reverse
order of removal.
Spark Plugs
Servicing Your Honda
125