Polaris Sportsman 9921848 - Manual (Page 69)

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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.
Exhaust Emission Control System
Exhaust emissions are controlled by engine design. An electronic fuel
injection (EFI) system controls fuel delivery. The engine and EFI com-
ponents are set at the factory for optimal performance and are not
adjustable.
Electromagnetic Interference
This spark ignition system complies with USA requirements, Canadian
ICES-002 and European directives 89/336/EEC and 97/24/EC.