Gasoline Additives; Muddy Or Acidic Water; Anti-Fouling Paint - Yamaha VF175 Owner's Manual

EMU41342

Gasoline Additives

Gasoline blends change to meet automobile
emission regulations and economic condi-
tions. Additives, added by gasoline distribu-
tors, necessary for proper automobile engine
operation and durability, may not be suffi-
cient for typical boat applications. Intake
valve and combustion chamber deposits
may accumulate in boat engines more rapidly
than encountered in automotive use. In addi-
tion, gasoline used for boating will typically
age longer between refills than gasoline used
in automobiles, resulting in stale and unus-
able gasoline that may cause starting and
running problems, fuel system damage, and
internal engine damage.
Yamaha recommends the use of two
Yamalube gasoline additives to reduce inter-
nal deposits and extend the storage life of
gasoline. Continuous use of Yamalube Ring
Free Fuel Additive Plus reduces harmful inter-
nal deposits. Yamalube Fuel Stabilizer &
Conditioner Plus added to fresh gasoline will
help protect the fuel system from varnishing
while helping to keep the gasoline's octane
level from decreasing excessively during
storage. Other additives may also be avail-
able on the market that may have varying de-
grees of effectiveness. Consult your Yamaha
dealer concerning what may work best for
the locally available gasoline and environ-
mental conditions.
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Muddy or acidic water

Yamaha strongly recommends that you have
your dealer install the optional chromium-
plated water pump kit if you use the outboard
motor in muddy or acidic water conditions.
However, depending on the model it might
not be required.
Specifications and requirements
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A clean hull is required to maintain your
boat's performance. Boats moored in the wa-
ter should be protected from marine growth
(barnacles, mussels, and marine plants). If
approved by regulations for your area, the
bottom of the hull can be coated with an anti-
fouling paint to inhibit marine growth.
Anti-fouling paints specifically formulated for
use on aluminum may be applied to the out-
board motor. The original Yamaha paint sur-
face may be scuffed lightly before applying
anti-fouling paint, but do not remove the orig-
inal paint. Removal of the original paint will in-
crease the rate of corrosion.
ECM04821
NOTICE
 Anti-fouling paint for fiberglass and
 Anti-fouling paint can increase drag
Sacrificial anodes are attached to the out-
board motor to provide corrosion protection
and must never be painted.
Sacrificial anodes made from a different ma-
terial may be necessary for maximum corro-
sion protection due to your local water
conditions. Please consult your Yamaha
dealer.

Anti-fouling paint

wood may contain materials, such as
copper, graphite, and tin, that can cause
corrosion if applied to aluminum boats
and outboard motor components. Never
apply these types of paint to your out-
board motor because rapid corrosion
damage could occur.
(friction) between the boat and the wa-
ter, and possibly affect performance. If
the effects are too great, reducing pro-
peller pitch may be necessary.
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