Spark Plug Removal; Spark Plug Inspection - Honda CRF450X 2005 Service Manual

MAINTENANCE
SPARK PLUG
REMOVAL
Clean around the
spark plug base
with
compressed
81f
before
Remove the fuel tank (page 3-8),
Disconnect the spark plug cap from the cylinder
head.
Remove the spark plug and inspect
it
for damage.
Inspect or replace as described in the maintenance
schedule.
removmg, and be - '05, '06: (page 4-4)
sure that no debfls -
After '06: (page 4-5)
IS allowed 10 enter
the combustion
chamber,
INSPECTION
Check the following and replace if necessary
• Insulator for damage
• Electrodes for wear
• Burning condition, coloration;
This motorcycle's
If the electrode is contaminated with accumulated
spark pJug
IS
objects or dirt, repla ce the spark plug .
equipped with an
iridium center
electrode Replace
the spar/( plug
if
the
electrode ;s
con/ammated.
Always
usa
rna
specrfied spark plug
on
rhls motorcycle.
4·12
Replace the plug if the cent er electrode is rounded
as shown in the illustration.
RECOMMENDED SPARK PLUG lOR EQUIVALENT)
Standard NG K: IFR8Hll
DENSO: VK24PRZ11
Optional NGK: IFR9Hll
DENSO: VK27PRZll
,
CENTER ELECTRODE
INSULATOR
~~~
SIDE ELECTRODE
ROUNDED ELECTRODE
r
•