1982-1983 Official Honda ATC 200E Big Red Shop Manual, Page 46Get this manual
FUEL SYSTEM Remove the throttle valve and remove the jet needle (Page7) Change the jet needle clip position from the 3rd groove (stan dard) to the 2nd grooveInstall the jet needle and install the throttle valveAssemble and install the carburetor Start the engine and adjust the idle speed at high altitude to ensure proper high altitude operation CAUTION :
ATC200E
GROOVES