1985-1986 Honda ATC250R Shop Manual, Page 61Get this manual
FUEL SYSTEM ,ALTITUDE AND TEMPERATURE ,ADJUSTMENT
The carburetor must be adjusted for altitude and temperature according to the chart,
CHOKEIDLE SPEED KNOB
STANDARD SETTING:
2-14 turns out
emper-atu re
-25 CT_17.5C_ -,-17.5C-1(-13'F- (O"F-'1 0' .22'
_5 C_ 40C -' 104F)
AIR SCREW
8L!l, -I !L!l'::, Air screw
1-:: ,I Jet need Ie
f setting
2ND 2-34 tu rns out
1ST 2-34 turns out
RD 2-14 turns out