Polaris ATP 500 4x4 - Manual (Page 77)

74
EMISSION CONTROL SYSTEMS
Noise Emission Control System
Do not modify the engine, intake or exhaust components, as doing so
may affect compliance with state and local noise level requirements.
Spark Arrestor
Your Polaris vehicle has a spark arrestor that was tested and approved
in accordance with the USDA Forest Service Standard 5100-1C.
Federal law requires that this spark arrestor be installed and functional
when the vehicle is operated on public lands.
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 carburetion and ignition. The engine and
related components must be maintained at Polaris specifications to
achieve optimal performance.
Adjustment to engine idle is the only
adjustment Polaris recommends that the
operator perform. Any other adjustments
should be performed by an authorized
Polaris dealer.
The emissions label (1) is located on the
recoil cover.
1