Spark Plug Inspection - Honda CRF1000 Shop Manual

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Pull the right radiator to outside (page 3-5).
Remove the spark plug cap [1].
Remove the No.2 cylinder sub plug [2] using the
equipped spark plug wrench.
Remove the spark plug cap [1].
Remove the No.2 cylinder main plug using the
equipped spark plug wrench [2].
Inspect or replace the spark plug as described in the
MAINTENANCE SCHEDULE (page 3-2).
Install and hand tighten the spark plug to the cylinder
Replace new
head, then tighten the spark plug to the specified torque
spark plugs as
using the equipped spark plug wrench.
set.
TORQUE: 22 N·m (2.2 kgf·m, 16 lbf·ft)
Connect the spark plug caps securely.
Install the removed parts in the reverse order of
removal.
• Route the hose and wire properly (page 1-26).
INSPECTION
Check the following and replace the spark plug if
necessary.
• Insulator [1] for damage
• Center electrode [2] and side electrode [3] for wear
• Coloration or burning condition
If the electrodes are contaminated with accumulated
This motorcycle's
objects or dirt, replace the spark plug.
spark plugs are
equipped with an
SPECIFIED SPARK PLUG: SILMAR8A9S (NGK)
iridium center
electrode. Replace
the spark plug if the
electrode is
contaminated.
Check the gap between the center and side electrodes
To prevent
with a wire type feeler gauge [1].
damaging the
iridium center
Make sure that the Φ 1.0 mm (0.04 in) plug gauge can
electrode, use a
not be inserted between the gap.
wire type feeler
gauge to check the
spark plug gap.
If the gauge can be inserted into the gap, replace the
Do not adjust the
plug with a new one.
spark plug gap. If
the gap is out of
specification,
replace it with a new
one.
[1]
[1]
[2]
[1]
[1]
MAINTENANCE
[2]
[2]
[3]
3-7