Suzuki RV125, Service Manual

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PERIODIC MAINTENANCE 2-7
SPARK PLUG
• Disconnect the spark plug cap and remove the spark plug.
#
09930-10121: Spark plug wrench set
"
• Carbon deposits on the spark plug will prevent good sparking
and may cause the engine to misfire. Be sure to clean the car-
bon deposits off periodically.
• If the center electrode is fairly worn down, the spark plug
should be replaced and the spark plug gap set to the specifi-
cation using a thickness gauge.
#
09900-20803: Thickness gauge
$
Spark plug gap: 0.7 – 0.8 mm
• Check the spark plug for burns. If any abnormalities are
found, replace the spark plug.
"
• Tighten the spark plug to the specified torque using the spe-
cial tool.
%
Spark plug: 18 N·m (1.8 kgf-m)
#
09930-10121: Spark plug wrench set
Inspect every 4 000 km (20 months).
Replace every 8 000 km (40 months).
STD Cold type Hot type
NGK CR8E CR7E CR9E
DENSO U24ESR-N U22ESR-N U27ESR-N
Confirm the thread size and reach when replacing the
spark plug. If the reach is too short, carbon will be
deposited on the screw portion of the plug hole and
engine damage may result.
Before using a spark plug wrench, carefully turn the
spark plug by finger into the threads of the cylinder
head to prevent damage.
0.7 – 0.8 mm