Advertisement
When did you last replace the zinc pencil inside your engine's heat exchanger? If you don't remember — or worse, if you are thinking "the what?" — this is a maintenance job that needs immediate action. The copper tubes inside the exchanger are at risk of damage from electrolysis — just like your prop. An internal zinc anode protects the exchanger. You will normally find the zinc pencil under a threaded plug near one end of the exchanger. If it is only lightly corroded, scrape it bright and put it back; if it is heavily corroded — or gone altogether — replace it. Check it at least annually.
BoatUS Members save at Boat Shows
Make sure to mark your calendars for two exciting events! The code for both shows is 25BOATUS (not case sensitive). This is a $5 discount that applies to Preview Day, General Admission, Preview Combo, and General Admission Combo tickets.