2006-2009 Suzuki LT-R450 Service Manual, Page 22Get this manual
PERIODIC MAINTENANCE
FUEL LINE
Inspect every monthsReplace every yearsInspect the fuel hose for damage and fuel leakageIf any defects are found, replace the fuel hoses with new ones
FUEL FILTER
Replace every years
Inspect the fuel filter for damage and rustIf any defects are found, blow the fuel filter with compressed air or replace the fuel filter, O-ring and fuel filter cap with new one(C7'S-9)