1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 35Get this manual
GENERAt INFORMATION
E: ISSION CONTROL SYSTEMS M
The Ga,lifo rnla Ai R,esou,rces Board (GARB! requires manufacture rs to certify that their ATVs comply with applica ble exhaust emissions standa rds during their usefui ife,when operated and maintained acco,rding to the in structi ons provi ded
SOURCE OF EMISSIONS
Th 00 bu stio rooo.ss prod uces ca rbon mo no)(i de and hyd roca rbo nsCont ral of hydroca rb on very imponant beca use" nder ce ta,in conditions, they react to from photochem ica smog, when subjected to sunlightCarbon monoxide does not react in the same way, but it is toxicHon da Motor Co Ltdutilfzedlean carburetorsenlngs as weH as other systems, to reduce carbon monoxide and hyd rocarbons"