2006-2009 Suzuki LT-R450 Service Manual, Page 21Get this manual

2006-2009 Suzuki LT-R450 Service Manual, Page 21

PERIODIC MAINTENANCE SPARK PLUG Inspect every monthsReplace every 18 months Remove the fuel tank and fuel tank lower cover(c::::T54)
ELECTRODE Check the condition of 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 threads, etcI CAUTION I ;;[10.7-0.8 mm (0.0280.031 in)
Check the thread size and reach when replacing the spark 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 ICAUTION To avoid damaging the cylinder
head threads; first, finger tighten the spark plug, and then tighten it to the specified torque using the spark plug wrench