1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 50Get this manual

1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 50

FUEL SYSTEM Remove the carburetor (page -5) and float chamber
Replace the standard main jet with the high altitude type Ill' 1221Assemble and install the carburetorTurn-in the pilot screw 14 turnStart the engine and adjust the idle speed at high altitude to ensure proper high altitude operationCA UTION