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)Charging Condition Inspection
Battery charging condition can be checked by measuring
battery terminal voltage with a digital voltmeter [A].
Remove the seat (see Seat Removal in the Frame chapter).
Disconnect the battery terminals.
NOTICE
Be sure to disconnect the negative (–) cable first.
Measure the battery ...
Lubrication
It is important to lubricate rotating or sliding parts during
assembly to minimize wear during initial operation. Lubrication
points are called out throughout this manual, apply
the specific oil or grease as specified.
Direction of Engine Rotation
When rotating the crankshaft by hand, the fre ...
Spring Preload Adjustment
The spring preload adjuster is located
at the lower end of each front fork leg
and can be adjusted.
To increase spring preload and
stiffen the suspension, turn the
preload adjuster clockwise with a
hexagon wrench.
To decrease preload and soften the
suspension, turn the preload adjust ...