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Spark Arrestors

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http://www.fs.fed.us/recreation/programs/ohv/OHV_SAG2007.pdf

That's a US Forest Service off-highway vehicle guide to spark arrestors. This appears to be what the employees will use when evaluating a spark arrestor to see if it meets standards.

Oddly enough, they fail to list "Bultaco", though my 1976 Sherpa T does appear to have the appropriate stampings in the OEM exhaust.

http://www.gsa.gov/gsa/cm_attachments/GSA_...RDZ-i34K-pR.pdf

is the document (USFS 5100-1c) establishing the USFS standards

There's some interesting technical information, a list of manufacturers, and it might come in handy should you need to have a polite discussion with someone on why your vehicle's system is legal and you shouldn't be issued a ticket.

cheers,

Michael

Edited by MichaelMoore

All that info makes me wonder how much money they wasted just putting together more info than most can digest in one manual?

We cannot control objects size of mexicans with truckloads of drugs crossing the border, and you want to get into the screen size of spark arrestors at .024 no go! What is wrong with this picture! Friggin idiots! ;)

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