2006-2010 Suzuki DF150 / DF175 4-Stroke Outboards Service Manual, Page 51Get this manual
PERIODIC MAINTENANCE
Inspect every 50 hours (3 months)ANODES If 23 of zinc anode has corroded away, replace anodeThe anode should be periodically cleaned with wire brush to ensure maximum effectiveness
NOTE: The anode cover may be separated from the power unit body by inserting and turning 10 mm bolt to function as screw jack