PERIODIC MAINTENANCE AND TUNE-UP PROCEDURES 2-4
Spark plug
● Tighten the spark plug to the specification.
● Check the spark plug for burnt condition. If abnormal, replace
the plug as indicated in the chart.
Neglecting the spark pulg maintenance eventually leads to difficult starting
and poor performance. If the spark plug is used for a long period, the elec-
trode gradually 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 to reset 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 specified gap using a thickness gauge.
SPARK PLUG
FUEL LINE
C l e a n E v e r y 4 0 0 0 k m ( 2 4 0 0 m i l e s , 6 m o n t h s ) a n d
R e p l a c e E v e r y 8 0 0 0 k m ( 4 8 0 0 m i l e s , 1 2 m o n t h s )
Tightening torque
25－30 N∙m
(2.5－3.0 kg-m, 18.0－21.0 lb-ft)
GOLDEN
REMARKS
BP5HS
If the standard plug is apt to get wet,
replace with this plug.
If the standard plug is apt to get overheat,
replace with this plug.
BP6HS
Standard
BP7HS
09900-20804
Thickness gauge
Spark plug gap
0.6-0.7 mm(0.024-0.028 in)
Inspect at Initially 1000
km
(600miles, 2momths), and
Every 4000
km
(2400miles, 6months) thereafter
Replace Every 4 years.
NOTE:
●
To check the spark plug, first make sure that the fuel used is unlead-
ed gasoline, and if plug is either sooty with carbon or burnt white,
replace it.
●
Confirm the thread size and reach when replacing the plug.
0.6~0.7 mm
(0.024~0.028in)
