Spark Plug - HYOSUNG WOW90 Service Manual

2-5 PERIODIC MAINTENANCE

SPARK PLUG

NOTE :
Inspect Initial 1 month and Every 3 months,
Replace Every 6 months.
Neglecting the spark plug maintenance eventually
leads to difficult starting and poor performance. If the
spark plug is used for a long period, the electrode grad-
ually burns away and carbon builds up along the inside
part. In accordance with the Periodic Inspection Chart,
the plug should be removed for inspection, cleaning
and resetting the gap.
● Carbon deposits on the spark plug will prevent good
sparking and cause misfiring. Clean the deposits off
periodically.
● If the center electrode is fairly worn down, the plug
should be replaced and the plug gap set to the speci-
fied gap using a thickness gauge.
Spark plug gap
Thickness gauge : 09900 - 20804
● Check spark plug for burnt condition. If abnormal,
replace the plug as indicated below.
TYPE SPARK PLUG SPECIFICATION
Hot type
Standard type
Cold type
Spark plug : 25~30 N∙m (2.5~3.0 kg∙m)
CAUTION
● ● To check the spark plug, first make sure that the
fuel used is unleaded gasoline, and if plug is
either sooty with carbon or burnt white, replace
it.
● ● Confirm the thread size and reach when replac-
ing the plug.
0.6�0.7 mm
(0.024~0.028 in)
BPR6HS
BPR7HS
BPR8HS
0.6�0.7 mm
(0.024~0.028 in)