Emission Control Systems Information And Warranty-Gasoline; Emission Control System Background Information - Husqvarna CRT 48-35L Operator's Manual

Emission Control Systems Information and Warranty—Gasoline
12 Emission Control Systems Information
and Warranty
The Emission Control Warranty and associated information is valid only for the
U.S.A., its territories, and Canada.
12.1

Emission Control System Background Information

Introduction
Wacker Neuson spark-ignited engines/equipment must conform with applicable
Environmental Protection Agency (EPA) emissions regulations. There are two
types of emissions that fall under these regulations: 1) exhaust, and 2) evaporative.
These regulations require that manufacturers warrant the emission control systems
for defects in materials and workmanship.
Furthermore, EPA regulations require all manufacturers to furnish written
instructions describing how to operate and maintain the engines/equipment
including the emission control systems. This information is provided with all
Wacker Neuson engines/equipment at the time of purchase.
Exhaust 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.
Wacker Neuson utilizes lean carburetor settings and other systems to reduce the
emissions of carbon monoxide, oxides of nitrogen, and hydrocarbons.
Evaporative Emissions
Evaporative emissions are fuel emissions and generally include emissions that
result from permeation of fuel through the fuel-system materials or from ventilation
of the fuel system.
Wacker Neuson utilizes low-permeation fuel lines and fuel tanks where applicable
to reduce evaporative emissions.
Problems that may affect Emissions
If any of the following symptoms arise, have the engine/equipment inspected and
repaired by a Wacker Neuson dealer/service center.
■ Hard starting or stalling after starting
■ Rough idling
■ Misfiring or backfiring under load
■ Afterburning (backfiring)
■ Presence of black exhaust smoke during operation
■ High fuel consumption
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Gasoline
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