Volvo Penta PENTA Launch Manual page 21

Check the zinc or magnesium anodes
on the drive and shield. The anodes
must be replaced if they are more than
half used up. Use Genuine Volvo Penta anodes,
since the wrong mix of material in the anode can
lead to serious corrosion damage to the drive and
propeller.
Remember that you must never paint over the
anodes! The mounting surface must also be
scraped clean, down to the bare metal, before
installing any new anodes.
Warning!
You must make absolutely sure to lock/secure
the drive in the folded-up position when working
with the drive or shield. See operator's manual.
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