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SPARK
PLUGS
Clean
Every 6 000 km (4 000 miles) and
Replace
Every 12 000 km (7 500 miles)
The plug gap is adjusted to 0.8 — 0.9 mm (0.03 —
0.04 in). The gap is correctly adjusted by using a
thickness gauge. When
carbon is deposited on the
spark plug, remove the carbon with a tool with a
pointed end. If the electrodes are extremely worn
or burnt, replace the plug. Also replace the plug if
it has a broken insulator, damaged thread, etc.
NGK
DP9EA-9
or NIPPON
DENSO
X27EP-U9 as
listed in the table should be used as the standard
plug. However, the heat range of the plug should
be
selected
to meet
the requirements
of speed,
actual
load,
fuel, etc.
If the
plugs
need
to be
replaced,
it is recommended
that
the standard
plugs listed in the table be selected.
Remove
the
plugs and inspect the insulators. Proper heat range
would
be
indicated
if all insulators
were
light
brown
in color. If they are blackened by carbon,
they
should
be
replaced
by a hot type
NGK
DP8EA-9 or NIPPON DENSO X24EP-U9.
NOTE:
To check the spark plugs, first make sure that
the fuel tank contains unleaded gasoline, and
after a test ride if the plugs are either sooty
with carbon or burnt white, replace them.
_——
NOTE:
Confirm
the
thread
size and
reach
when
replacing the plug. If the reach is too short,
carbon will be deposited on the screw portion
of the plug hole and engine
damage
may
result.
Gap 0.8 — 0.9mm
(0.03 — 0.04 in)
NIPPON
DENSO
REMARKS
NGK
If the standard plug is
apt to get wet, replace it |
with this hot type plug.
DP8EA-9
X24EP-U9
DP9EA-9
X27EP-U9
"R"' type spark plug
NIPPON
DENSO
NGK
REMARKS
If the standard plug is
apt to get wet, replace it
with this hot type plug.
NOTE:
"R"
type
spark plug
is installed for some
specifications.
"'R'"
type
spark
plug has a
resister
located
at the center
electrode
to
prevent radio noise.
DPR8EA-9
X24EPR-U9
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