Polaris Trail Boss 330 Quadricycle - Manual (Page 62)

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EMISSION CONTROL SYSTEMS
Noise Emission Control System
Do not modify the engine, intake or exhaust components, as doing so
may affect compliance with governmental noise level requirements.
Spark Arrestor
Your Polaris vehicle has a spark arrestor that was designed for on-road
and off-road operation. It is required that this spark arrestor remain
installed and functional when the vehicle is operated.
Crankcase Emission Control System
This engine is equipped with a closed crankcase system. Blow-by
gases are forced back to the combustion chamber by the intake system.
The system does not allow the blow-by gases to enter the atmosphere.
Exhaust Emission Control System
The emissions from the exhaust of
this vehicle are controlled by
engine design, including
factory-set fuel delivery and
ignition. The engine and related
components must be maintained
at Polaris specifications to achieve
optimal performance.
The emissions label (1) is located
on the recoil cover.
Adjustment to engine idle is the only adjustment recommended that the
operator perform. Any other adjustments should be performed by an
authorized Polaris dealer.
Electromagnetic Interference
This spark ignition system complies with USA requirements, Canadian
ICES--002 and European directives 89/336/EEC and 97/24/EC.
1