RADLEY RW2500, User Manual

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30
RW SERIES
1. Remove the spark plug cap.
2. Remove the spark plug with the spark plug wrench.
3. Visually inspect the spark plug. Replace with a new plug if the insulation is
cracked or chipped. Clean with a wire brush if the spark plug is reused.
4. Measure the spark plug gap with a feeler gauge. The normal value is:
0.7-0.8mm (0.028- 0.031in). Adjust the gap by carefully bending the
electrode.
5. Carefully reinstall the spark plug by hand, to avoid cross-threading. A new
spark plug should be tightened 1/2 turn with a spanner. A used spark plug
should be tightened 1/8 to 1/4 turn with spanner.
6. Reinstall the spark plug cap.
Note
The spark plug must be securely tightened or it could cause the spark
plug to heat up, enough to damage the engine.
Never use a spark plug with an improper heat range.
6.8 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.