Spark Plug Removal; Spark Plug Inspection; Reusing A Spark Plug - Honda 2000 XR50R Service Manual

MAINTENANCE
Reinstall the air cleaner element and the element
holder by aligning the cutout with the projection on
the housing.
Apply grease into the mating groove in the air
cleaner housing cover.
Align the groove in
Install the housing cover and tighten the screws.
the cover with the
projection on the
housing.
SPARK PLUG
REMOVAL
Clean around the
spark plug base
with
compressed
air before
removing, and be
sure that no debris
is allowed to enter
the combustion
chamber.
3-6
Disconnect the spark plug cap.
Remove the spark plug using a spark plug wrench
or an equivalent.
Inspect or replace as described in the maintenance
schedul e (page 3·3).
INSPECTION
Check the following and replace if necessary (rec-
ommended spark plug: page 3-1)
• Insulator for damage
• Electrodes for wear
• Burning condition, coloration;
-dark to light brown indicates good condition.
-excessive lightness indicates malfunctioning ig-
nition system or lean mixture.
-wet or black sooty deposit indicates over-rich
mixture.
REUSING A SPARK PLUG
Clean the spark plug electrodes with a wire brush
or special plug cleaner.
Check the gap between the center and side
electrodes with a wire-type feeler gauge.
If
necessary, adjust the gap by bending the side
electrode carefully.
SPARK PLUG GAP:
0.60-0.70 mm (0.024-0.028 in)
•
GROOVE
PROJECTION
•
COVER
CUTOUT ELEMENT
•
CAP
CENTER ELECTRODE
ElECTRODE
•
INSU LATOR
•
•