2·
10
PERIODIC
MAINTENANCE
SPARK PLUG
Inspect every 6
months
.
Replace every 18
months
.
• Disconnect the spark plug cap
<D
and remove the spark plug.
-..........
H
oi
type Standard Cold
1ype
NGK CR6E CR7E CR8E
DENSO U20ESR
·N
U22E
SR·
N
U24ESR·N
CARBON DEPOSITS
Check to see if there are carbon deposits on the spark plug. If
carbon
is
deposited, remove
it
using a spark plug deaner
machine or carefully use a tool with a pointed end.
SPARK
PLUG
GAP
Measure the spark plug gap using a thickness gauge. If
th
e
spark plug gap is out of specification, adjust the gap.
_ Standard
Spark
plug
gap:
0.7 - 0.8
mm
(0.028 - 0.
031
in)
mil
09900-20803: Thi
ckness
gauge
ELECTRODE
Check the condition of the electrode.
If the electrode
is
extremely worn or burnt,
rep
lace the spark
plug with a new one.
Also, replace the spark plug
if
it has a broken insulator, dam-
aged threads, etc.
I
CAUTION
I
Check
the
thread si
ze
and reach when replacing the
spark
plug. If
the
reach
is
too
short,
carbon
will
be
deposited
on
the
screw
portion
of
the
spark
plug
hole
and engine damage may result.
~;;
=~
0.
7
-
0
.
8m
m
, (0.028 - 0.031
in
)
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