PRODUCT OVERVIEW
14
ZT370 Operation Manual
Underwater Drive Coating
The lower gear case coating may be
damaged when hit by objects in the water,
or when having deposits removed from it.
The underwater coating must be inspected
at least once per year and when it is
believed that an object was hit that may
have caused damage. Repair and repaint
damaged areas immediately.
Observe the following precautions when
applying antifouling or marine paint to the
transom of the boat hull:
• Always follow the paint/coating
manufacturer’s directions for surface
preparation and application.
• Always use a high quality primer and
topcoat paint specifically designed for
aluminum outboards or stern-drives.
• Never paint the anodes installed on the
stern-drive.
• Never paint the Y-CaPS reference
electrode and/or anode.
• Never wash the stern-drive with a high
pressure washer. This could damage the
coating on the reference wire.
• Never paint the stern-drive with a
material that contains copper or tin.
• Never paint over drain holes, anodes,
Y-CaPS or other items specified by the
anode manufacturer.
Consult your authorized Yanmar Marine
dealer or distributor for assistance.
NOTICE
Galvanic corrosion damage, normal
maintenance and consumable parts are
not covered by the Yanmar limited
warranty.
Additional Protection
In addition to the corrosion protection
devices, take these steps to inhibit
corrosion:
the stern-drive paint and spray with
corrosion guard on page 41
2. Spray stern-drive components on the
inside of the vessel annually with
corrosion guard to protect the finish
from dulling and corrosion. External
stern-drive components may also be
sprayed.
3. Keep all lubrication points, especially
the steering system, shift and throttle
linkages, well-lubricated.
4. Flush the coolant system periodically,
preferably after each use.
NOTICE
Replace anodes if eroded 50 percent or
more.
NOTICE
Anytime the boat is left in the water and
the engine is not running, the drive must
be left in the fully down position. This will
keep the anodes in the water and will
keep the exhaust pipe engaged with the
exhaust port of the drive.
Figure 3
039030-00E00
Trim cylinder anodes
Y-CaPS
electrode
Ventilation
plate anode
Propeller shaft
anodes
Gear
housing
anodic
plates
ZT370_OM.book 14 ページ 2013年9月27日 金曜日 午前10時16分