Suzuki 2002-2005 DF4/DF5/DF6 4-Stroke Outboards Service Manual, Page 28Get this manual
PERIODIC MAINTENANCE ENGINE OIL FILTER INSPECTION Inspect every 200 hours (12 months)To inspect the engine oil filter1Remove the power unit from the engine lower cover(See the page 6-2 to 6-4) 2Detach the engine oil filter with the holder from the crankcase3Inspect the engine oil filter for dirt, clog or other damageClean or replace the filter if necessary