Christini AWD 450DS, Service Manual

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Page 19
Maintenance
SPARK PLUG
REMOVAL
•
Remove the fuel tank and disconnect the spark plug cap. Remove The
spark plug and inspect it for damage
•
Clean around the spark plug base with compressed air before removing
and be sure that no debris is allowed to enter the combustion chamber.
INSPECTION
•
Check the following and replace if necessary:
1. ·insulator for damage
2. ·electrodes for wear
3. ·burnt or discoloration
•
If the electrode is contaminated with accumulated debris or dirt replace
the spark plug.
(this motorcycle’s spark plug is equipped with an iridium center electrode. Re-
place the spark plug if the electrode is contaminated.)
•
Replace the plug if the center electrode is rounded as shown in the pic-
ture.
(Always use the specified spark plugs on this motorcycle)
RECOMMENDED SPARK PLUG (OR EQUIVALENT)
Standard: DENSO: IK24
Optional : DENSO: IK27
Check the gap between the center and side electrodes with a wire
Type feeler gauge
(To prevent damaging the iridium center electrode, use a wire type
Feeler gauge to check the spark plug gap. Do not adjust the spark
Plug gap if the gap is out of specification , replace with a new one.)
Spark plug gap: 0.4mm
Make sure that the 1mm diameter plug gauge does not insert between the
gap.
If the gauge can be inserted into the gap , replace the plug with a new one.
INSTALL
•
Reinstall the spark plug into the cylinder head and hand tighten , then
torque to specification.
Torque: 22N.m(2.2kgf.m,16lbf.ft)