Honda NSS250A Owner's Manual page 173

If Your Engine Quits or Won't Start
SYMPTOM: Engine starts, but runs poorly.
POSSIBLE CAUSE
idles roughly, too fast, stalls
overheating
runs erratically, misfires
blubbers (rich fuel mixture)
164
Taking Care of the Unexpected
WHAT TO DO
Check engine idle adjustment (page
problem persists, see your Honda dealer.
Check the coolant temperature gauge. Refer to
Y our Engine Overheats,
See your Honda dealer.
See your Honda dealer.
114
). If the
page 170 .
If