If you’ve seen any of the 2006 production models at a dealer or have taken delivery on a 2006 sled, you’ve likely seen a...

If you’ve seen any of the 2006 production models at a dealer or have taken delivery on a 2006 sled, you’ve likely seen a new emissions hang tag attached to every sled. Starting with the 2006 models, snowmobiles are subject to federal emissions regulations, and these hang tags indicate the “cleanliness” of that particular engine model family and machine. Not all sleds will have the hang tags, as only 50% of a manufacturer’s build figures into the 2006 numbers, but starting in 2007 all sleds will be part of the scrutiny.

The tag displays a number between 0 and 10 called the Normalized Emissions Rating (NER) that indicates the emissions output from that engine per a specific EPA regulation (40CFR1051.135). A lower number is more clean (less exhaust emissions) and a higher number is less clean (more exhaust emissions). Remember, not each and every engine model family must meet the 30% reduction; it is a fleet average, at least for the next few years.

For example, a 2006Yamaha RS 4-stroke has a NER of 1.0, indicating it is a very low emissions engine family. The Ski-Doo 600 H.O. SDI, while 100% EPA-compliant, has a NER of 5. The Ski-Doo PowerTEK 800 and 1000 SDI, also 100% compliant, both have a NER of 6. The 2006 Polaris 600 HO engine, said to be 20% cleaner than the industry baseline, has a NER of 9.

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