Pre-Operating Preparations; Fuel Handling - TOHATSU MFS 9.9E Owner's Manual

PRE-OPERATING PREPARATIONS

ENOM00030-A

1. Fuel handling

ENOW000017-0
CAUTION
Use of improper gasoline can damage your
engine. Engine damage resulting from the
use of improper gasoline is considered
misuse of the engine, and damage caused
thereby will not be covered under the lim-
ited warranty.
ENOM00031-A
FUEL RATING
TOHATSU engines will operate satisfacto-
rily when using a major brand of unleaded
gasoline meeting the following specifica-
tions:
USA and Canada — having a posted
pump Octane Rating of 87 (R+M)/2 mini-
mum. Premium gasoline (92 [R+M]/2
Octane) is also acceptable. Do not use
leaded gasoline.
O u t s i d e U S A a n d C a n a d a — U s e
unleaded gasoline with declared octane
rating of 91 RON or over. Use of premium
gasoline of 98 RON is also allowed.
ENOM00032-A
GASOLINES CONTAINING
ALCOHOL
The fuel system components on your
TOHATSU engine will withstand up to 10%
ethyl alcohol (hereinafter referred to as the
"ethanol"), content in the gasoline. But
even if the gasoline in your area contains
ethanol less than 10%, you should be
aware of certain adverse effects that can
occur. Increasing the percentage of etha-
nol in the fuel can also worsen these
adverse effects. Some of these adverse
effects are caused because the ethanol in
the gasoline can absorb moisture from the
air, resulting in a separation of the water/
ethanol from the gasoline in the fuel tank.
These may cause increased:
Corrosion of metal parts
Deterioration of rubber or plastic parts
Fuel permeation through rubber fuel
lines
Starting and operating difficulties
If the use of gasoline containing alcohol is
inevitable, or presence of alcohol is sus-
pected in the gasoline, it is recommended
to add a filter that has water separating
capability, and check the fuel system for
leaks and mechanical parts for corrosion
and abnormal wear more frequently.
And, in case any of such abnormality is
found, discontinue the use of such gaso-
line and contact our dealer immediately.
If the outboard motor will only be used
infrequently, please see the remarks on
fuel deterioration in the STORAGE chapter
(P 71) for additional information.
ENOW00020-1
CAUTION
When operating a TOHATSU engine on
gasoline containing alcohol, storage of
gasoline in the fuel tank for long periods
should be avoided. Long periods of stor-
age, create unique problems. In cars, alco-
hol blend fuels normally are consumed
before they can absorb enough moisture to
cause trouble, but boats often sit idle long
enough for phase separation to take place.
In addition, internal corrosion may take
place during storage if alcohol has washed
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