HYOSUNG COMET 125 Service Manual page 108

SPARK PLUG
Clean the plug with a wire brush and pin. Use the pin to
remove carbon, taking care not to damage the porce-
lain.
Check the gap with a thickness gauge.
Thickness gauge : 09900 - 20806
Spark plug gap
0.7 0.8 mm
(0.028 0.032 in)
ELECTRICAL SYSTEM 5-6
0.7 0.8 mm
(0.028 0.032 in)