2005-2011 Honda Recon TRX250TE/TM service manual, Page 102Get this manual
FUEL SYSTEM NOTICE When the carburetor has been modified for high
altitude operation, the air-fuel mixture will be too
tor may cause the engine to overheat, resulting in emissionsFor use Sf low altitudes, you should return the carburetor fa original factory specificationsReplace the high altitude main jet with the standard type and screw out the pilot screw the specified number of turns from the high altitude setti ng
lean for low altitude USBOperation at altitudes beow 1,500 (5,000 feet) with modified carbure-
serious engine damage and increased exhaust