Mercury 1.7 MI, Manual

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SPECIFICATIONS
SECTION 4
Page 42 CMD-3967823 / 90-865237030 OCTOBER 2003
CD164
Fuel Requirements
WARNING
Electrical system components on this engine are not external ignition protected.
DO NOT STORE OR UTILIZE GASOLINE ON BOATS EQUIPPED WITH THESE
ENGINES, UNLESS PROVISIONS HAVE BEEN MADE TO EXCLUDE GASOLINE
VAPORS FROM ENGINE COMPARTMENT (REF: 33 CFR). Failure to comply could
result in fire, explosion and/or severe personal injury.
WARNING
FIRE HAZARD: Fuel leakage from any part of the fuel system can be a fire hazard
which can cause serious bodily injury or death. Careful periodic inspection of entire
fuel system is mandatory, particularly after storage. All fuel components including
fuel tanks, whether plastic, metal or fiberglass, fuel lines, primers, fittings, and fuel
filters should be inspected for leaks, softening, hardening, swelling or corrosion.
Any sign of leakage or deterioration requires replacement before further engine
operation.
WARNING
Under no circumstances should gasoline, gasohol and/or alcohol be mixed with
diesel fuel for any reason. This mixture of gasoline, gasohol and/or alcohol with
diesel fuel is highly flammable and produces a significant risk to the user.
IMPORTANT: Use of improper or water contaminated diesel fuel can damage your en-
gine seriously. Use of improper fuel is considered misuse of engine, and damage
caused thereby will not be covered by warranty.
Grade 2-D diesel fuel is required, meeting ASTM Standards D975 (or fuel rated Diesel DIN
51601), and having a minimum cetane rating of 45.
The Cetane number is a measure of the ignition quality of diesel fuel. Increasing the cetane
number will not improve overall engine performance, but it may be necessary to raise the
cetane rating for low temperature, or high altitude use. A lower cetane number could cause
hard starting and slower warm-up, and could increase engine noise and exhaust emissions.
NOTE: If your engine suddenly becomes noisy after a fuel fill, you possibly received
substandard fuel with a low cetane rating.
Sulphur content of the above fuel is rated at 0.50% by weight, maximum (ASTM). Limits may
vary in countries outside of the United States.
On intermittent use engines, high sulphur content diesel fuel will greatly increase:
• Corrosion on metal parts.
• Deterioration of elastomer and plastic parts.
• Corrosion and extensive damage, and excessive wear of internal engine parts, par-
ticularly bearings.
•
Starting and operating difficulties.
INDEX