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The following are the EPA approved percentages of oxygenates:
ETHANOL ––––––––(ethyl or grain alcohol) 10% by volume
You may use gasoline containing up to 10% ethanol by volume. Gasoline containing ethanol may be marketed under the name
‘‘Gasohol’’.
MTBE ––––––––––––(methyl tertiary butyl ether) 15% by volume
You may use gasoline containing up to 15% MTBE by volume.
METHANOL ––––––(methyl or wood alcohol) 5% by volume
You may use gasoline containing up to 5% methanol by volume, as long as it also contains cosolvents and corrosion inhibitors to
protect the fuel system. Gasoline containing more than 5% methanol by volume may cause starting and/or performance
problems. It may also damage metal, rubber, and plastic parts of your fuel system.
If you notice any undesirable operating symptoms, try another service station, or switch to another brand of gasoline.
Fuel system damage or performance problems resulting from the use of an oxygenated fuel containing more than the percentages
of oxygenates mentioned above are not covered under warranty.
Emission Control System Information
Source of Emissions
The combustion process produces carbon monoxide, oxides of nitrogen, and hydrocarbons. Control of hydrocarbons and oxides
of nitrogen is very important because, under certain conditions, they react to form photochemical smog when subjected to
sunlight. Carbon monoxide does not react in the same way, but it is toxic.
This utilizes lean carburetor settings and other systems to reduce the emissions of carbon monoxide, oxides of nitrogen and
hydrocarbons.
Tampering and Altering
Tampering with or altering the emission control system may increase emissions beyond legal limit. Among those acts that
constitute tampering are:
• Removal or alteration of any part of the intake, fuel, or exhaust systems.
• Altering or defeating the governor linkage or speed-adjusting mechanism to cause the engine to operate outside its design
parameters.
Problems That May Affect Emissions
If you are aware of any of the following symptoms, have your engine inspected and repaired by your servicing dealer.
• Hard starting or stalling after starting.
• Rough idle.
• Misfiring or backfiring under load.
• Afterburning (backfiring).
• Black exhaust smoke or high fuel consumption.
Replacement Parts
The emission control systems on your engine were designed and built. We recommend the use of genuine parts whenever you
have maintenance done. These original-design replacement parts are manufactured to the same standards as the original parts,
so you can be confident of their performance. The use of replacement parts that are not of the original design and quality, may
impair the effectiveness of your emission control system.
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