Volvo Penta V6-200 Operator's Manual page 91

P0018354
47706041 07-2014 © AB VOLVO PENTA
3 Have someone assist you by placing a rag in front
of the pitot tube at the leading edge of the lower unit.
4 Blow air, pressurized to no more than 116 PSI (800
kPa), into the pitot tube hose until your assistant
can feel the air exiting the pitot tube.
5 Reattach the speedometer hose to the barb fitting
on the pitot tube hose.
Anodes
Sacrificial anodes are attached to the bottom of the
transom shield A and on the rear of the sterndrive B.
A correctly working anode will slowly erode away. They
require frequent inspections to make sure there is
enough anode material left to protect the shield and
drive.
Anodes that are taken in and out of the water (e.g trailer
boats) will develop surface scale or oxidation. This
must be removed, with sandpaper, for the anode to
function.
Do not paint anodes, the paint will block the galvanic
action, preventing the anode from working correctly.
Anodes purchased from your Volvo Penta dealer meet
the highest specifications for material composition and
purity. Some aftermarket anodes may not meet these
quality specifications.
Inspecting Drive Anodes
Inspect anodes (see Maintenance Schedule for fre-
quency). If an anode is 2/3 its original size
(1/3 eroded), replace it.
The amount of erosion on the drive anode is a good
indication of the condition of the shield anode.
If additional electronic or electrical equipment is instal-
led, each item should have an individual anode or
grounding device and all grounding devices must be
interconnected. Follow equipment manufacturers rec-
ommendations.
Anode Replacement Information
NOTICE! Your Volvo Penta product has been shipped
with Aluminum anodes
Aluminum works best in salt or brackish water and is
also a good choice if the boat is used in different or
unknown salinity conditions.
Magnesium anodes are available for freshwater use.
Zinc anodes are available if the boat will only be used
in saltwater.
See your dealer for replacement anodes.
Maintenance
89