Checking Spark Plug
For the recommended spark plugs, see
“Specifications.” 2 P. 129
Use only the recommended type of spark
plugs in the recommended heat range.
Using a spark plug with an improper heat range
can cause engine damage.
Disconnect the spark plug caps from the
Clean any dirt from around the spark plug
Remove the spark plugs using a suitable
spark plug wrench.
Inspect the electrodes and center
porcelain for deposits, erosion or carbon
If the erosion or deposit is heavy,
replace the plug.
Clean a carbon or wet-fouled plug
with a plug cleaner, otherwise use a
20170804181417_31MJA6000_enu_BOOK Page 57 Friday, August 04 2017 18:20:32 JST
Spark plug cap