1985-1986 Honda ATC250R Shop Manual, Page 51Get this manual
FUEL SYSTEM
Float Level Inspection
Measure the float level
FLOAT LEVEL: 16 mm (0.63 in)
To adjust the float level, bend the float arm carefully until the float tip just contacts the float valveInstall the chamber
FLOAT LEVEL GAUGE 07401-0010000
THROTTLE VALVE