2005-2011 Honda FourTrax Foreman TRX500 FE/FPE/FM/FPM/TM Service Manual, Page 137Get this manual
FUEL SYSTEM Start the engine and warm it upAdjust the idle speed at high altitude with the throttle stop screw to ensure proper high altitude operalionIDLE SPEED: 1.400 100 rpm (min-')
I NOTICE I
When the carburetor has been modified for high altitude operation, the air-fuel mixture will be too lean for low altitude useOperation at altitudes below 5,000 feet (1,500 m) with modified carbure-
tor may cause the engine overheatresulting in serious engine damage and increased exhaust