BS65Y
iv
EMISSION CONTROL SYSTEM
INFORMATION
Source of Emissions
The combustion process produces carbon monoxide,
oxides of nitrogen, and hydrocarbons. Control of hydro-
carbons and oxides of nitrogen is very important be-
cause, under certain conditions, they react to form pho-
tochemical smog when subjected to sunlight. Carbon
monoxide does not react in the same way, but it is toxic.
WACKER utilizes lean carburetor settings and other
systems to reduce the emissions of carbon monoxide,
oxides of nitrogen, and hydrocarbons.
The U.S. and California Clean Air Acts
EPA and California regulations require all manufacturers
to furnish written instructions describing the operation
and maintenence of emission control systems.
The following instructions and procedures must be fol-
lowed in order to keep the emissions from your WACKER
engine within the emissions standards.
Tampering and Altering
Tampering with or altering the emission control system
may increase emissions beyond the 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 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 WACKER engine
were designed, built, and certified to conform with EPA
and California emissions regulations. We recommend
the use of genuine WACKER parts whenever you have
maintenence done. These original-design replacement
parts are manufactured to the same standards as the
original parts, so you can be confident of their perfor-
mance. The use of replacement parts that are not of the
original design and quality may impair the effectiveness
of your emission control system.
OXYGENATED FUELS
Some conventional gasolines are being blended with
alcohol or an ether compound. These gasolines are
collectivly referred to as oxygenated fuels. To meet clean
air standards, some areas of the United States and
Canada use oxygenated fuels to help reduce emissions.
If you use an oxygenated fuel, be sure it is unleaded and
meets the minimum octane rating requirement.
Before using an oxygenated fuel, try to confirm the fuel’s
contents. Some states / Provinces require this informa-
tion to be posted on the pump.
The following are EPA approved percentages of oxygen-
ates:
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 vol-
ume.
METHANOL
- (methyl or wood alcohol) 5% by volume.
You may use gasoline containing up to 5% methanol by
volume, as long as it 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 re-
sulting from the use of an oxygenated fuel contain-
ing more than the percentages of oxygenates men-
tioned above are not covered under warranty.
A manufacturer of an aftermarket part assumes the
responsibility that the part will not adversely affect emis-
sion performance. The manufacturer or rebuilder of the
part must certify that use of the part will not result in a
failure of the engine to comply with emission regulations.
Maintenance
Follow the maintenance schedule. Remember that this
schedule is based on the assumption that your machine
will be used for its designed purpose. Sustained high-
load or high-temperature operation, or use in unusually
wet or dusty conditions, will require more frequent ser-
vice.
