1998-2004 Honda Foreman 450 factory service manual, Page 117Get this manual
FUEL SYSTEM
HIGH ALTITUDE ADJUSTMENT
SPECIFICATIONS
Below 5,000 ft (1,500 m) Main jet
Between 3,0008,000 ft (1 ,0002,500 m)
The carburetor must be adjusted for high altitude riding (between 3,0008,000 ft1,0002,500 mISTANDARD SETTING: Below 5,000 ft (1,500 m) HIGH ALTITUDE SETTING: Between 3,0008,000 ft (1,0002,500 m)
The hi gh altitude carburetor adjustment is performed as follows: Remove the carburetor (page 5-5) and float chamberReplace the standard main jet with the high altitude typeHIGH ALTITUDE MAIN JET: #125
Assemble and install the carburetorStart the engine and adjust the idle speed at high altitude to ensure proper high altitude operation
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