Emission Control System - Benchmark BW4400 Mode D'emploi

6.10 EMISSION CONTROL SYSTEM

Emission Source
Exhaust gas contains carbon monoxide, nitrogen oxides (NOx) and hydrocarbons.
It is very important to control the emissions of NOx and hydrocarbons as they are a
major contributor to air pollution. Carbon monoxide is a poisonous gas. The emission
of fuel vapors is a source of pollution as well. The pressure washer engine utilizes a
precise air-fuel ratio and emission control system to reduce the emissions of carbon
monoxide, NOx, hydrocarbons and evaporative fuel emissions.
Regulation
Your engine has been designed to meet current Environmental Protection Agency
(EPA) clean air standards. The regulations dictate that the manufacturer provides
operation and maintenance standards regarding the emission control systems. Tune
up specifications are provided in the Specifications section and a description of the
emission control system may be found in the appendix to this manual. Adherence
to the following instruction will ensure your engine meets the emission control
standards.
Modification
Modification of the emission control system may lead to increased emissions.
Modification is defined as the following:
Disassembling or modifying the function or parts of the intake, fuel or
exhaust system.
Modifying or destroying the speed governing function of the pressure
washer.
Engine faults that may affect emission
Any of the following faults must be repaired immediately. Consult with your authorized
service centre for diagnosis and repair:
Hard starting or shut down after starting.
Unstable idle speed.
Shut down or backfire after applying an electrical load.
Backfire or after fire.
Black smoke and/or excessive fuel consumption.
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