Spark Plugs - Suzuki gw250F Owner's Manual

SPARK PLUGS

REMOVAL
To remove the spark plugs, follow the
procedure below:
1. Remove the under cowling by
referring to the FUEL TANK
REMOVAL section.
2. Pull off the spark plug cap.
3. Remove the spark plug with a
spark plug wrench.
NOTICE
Dirt can damage the moving
engine parts your motorcycle if it
enters an open spark plug hole.
Cover the spark plug hole while
the spark plug is out of the hole.
INSPECTION
Adjust the spark plug gap to 0.7 – 0.8
mm (0.028 – 0.031 in) by using a
spark plug gap thickness gauge. The
spark plug should be replaced every
10000 km (6000 miles).
Whenever
deposits, be sure to observe the oper-
ational color of each spark plug's por-
celain tip. This color tells you whether
or not the standard spark plug is suit-
able for your type of usage. A nor-
mally-operating spark plug should be
very light brown in color. If the spark
plug is very white or glazed appear-
ing, it has been operating much too
hot. This spark plug should be
replaced with the colder plug.
Consult your Suzuki dealer or a quali-
fied mechanic if your plug insulator is
not a light brown color.
6-15
0.7 – 0.8 mm
removing the carbon