White Magic PRO 1900, Руководство пользователя

Страница: 39 / 90

OPERATING INSTRUCTIONS
Anti– Knock Index (Octane Rating)
Your engine has been designed to operate using a gasoline with an (R + M) / 2 minimum anti-
knock index rating of 87 or 89. Federal regulations require that each retail gasoline dispensing
pump must display a label bearing the minimum anti-knock index rating.
Use of unleaded gasoline with an anti-knock index ratings lower than 87, can cause persistant,
heavy spark knock, which can lead to engine damage. If your engine knocks heavily when you
use gasoline with anti– knock index of 87 or higher, or if you hear continuous spark knock
while maintaining constant speeds, consult your dealer or another qualified technician.
Gasohol and Alcohol/Gasoline Blends
Gasohol, a mixture of gasoline and ethanol (grain alcohol), is available in some areas. Ford en-
gines should operate satisfactorily on gasohol blends containing no more than 10% ethanol by
volume and having an anti-knock index of 87 or 89, reference engine specifications.
CAUTION -
In some cases, methanol (wood alcohol) or other alcohols may be added to gasoline. Ford
engines should operate satisfactorily on blends containing up to 5% methanol by volume when cosolvents
and other necessary additives are used. If not properly formulated with appropriate cosolvents and corro-
sion inhibitors, such blends may cause drivability problems or damage emissions and fuel system materials.
Insufficient data is available to insure the suitability of all methanol/gasoline blends at this time. To avoid
jeopardizing your engine warranty or incurring unnecessary repair costs, DO NOT USE blends containing
more than 5% methanol by volume, or blends that do not contain cosolvents or corrosion inhibitors.
If you are uncertain as to the presence of alcohols in the gasoline you are purchasing, check the
label on the pump or ask the station attendant.
CAUTION -
Discontinue use of any gasohol or alcohol gasoline blend if drivability of fuel system
problems occur. Do not use such fuels unless they are UNLEADED.
53 HP FORD MAINTENANCE
34