Tuning For Special Conditions - Honda CR 125R 2002 Sevice Manual

FUELSVSTEM
TUNING FOR SPECIAL CONDITIONS
Once you've adjusted the carburetor for tempera ture and altitude, it shouldn't need major readjustment unless the race
conditions change drastically. Exclusive of the tuning information chart, there are some unique atmospheric conditions that
may require additional adjustments. They are as follows:
Main Jet:
Go richer on the main jet, by one number, when the track has a very long straightaway, steep climbs, a high percentage of
sand, or the track is muddy.
Go leaner on the main jet, by one number, when it is very humid or raining, or it is very hot (above 45°C (113°F)j.
Jet Needles:
Under normal circumstances. the standard jet needle can be adjusted to fit most situations. However, a peculiar condition
may require replacement of the standard jet needle. But before replacing the standard needle, complete all the carburetor
adjustments (page 4-3 through
6~ ,
If mid-range performance is still not satisfactory, try one of the optional jet needles. See
page 1-26.
4-8