2007-2009 Suzuki LTZ90 factory service manual, Page 21Get this manual

2007-2009 Suzuki LTZ90 factory service manual, Page 21

PERIODIC MAINTENANCE SPARK PLUG Inspect every monthsReplace every 18 months Disconnect the spark plug cap and remove the
electrodeIf the electrode is extremely worn or burnt, replace the spark plug with new oneAlso, replace the spark plug if
it has broken insulator, damaged thread, etc0.6 0.7 mm (0.024 0.028 in) Check the thread size and reach when replacing the
plugIf the reach is too short, carbon will be deposited on the screw portion of the spark plug hole and engine damage may
resultSPARK PLUG INSTALLATION To avoid damaging the cylinder head threads; first, tighten the spark plug by hand, and then
tighten it to the specified torque using the spark plug wrench Insert the spark plug and finger tighten it to the cylinder