The standard spark plug is shown in the table. The spark plugs should be replaced in accordance with the Periodic Maintenance Chart.
Spark plug removal should be done only by a competent mechanic following the instructions in the Service Manual.
Spark Plug

A. Plug Gap
Coolant Filling
Evaporative Emission Control System (California
model only)Piston Wear Inspection
Measure the outside diameter [A] of each piston 5 mm
(0.20 in.) [B] up from the bottom of the piston at a right
angle to the direction of the piston pin.
If the measurement is under service limit, replace the piston.
Piston Diameter
Standard: 75.959 75.974 mm
(2.9905 2.9911 in.)
...
Fuel Consumption
This display mode shows the fuel
consumption in Liter or Gallon by numerical
value counted from the start of
measuring to present time.
A. Fuel Consumption
B. “L”
While the fuel consumption is displayed,
push the lower button and
hold it in until the fuel consumption
values re ...
Rear Turn Signal Light Bulb Replacement
Remove the upper seat cover (see Seat Cover Removal
in the Frame chapter).
Disconnect the tail/brake light connector [A].
Turn the socket [A] counterclockwise and remove the
socket together with the bulb.
Push and turn the turn signal light bulb [A] counterclockwise
an ...