Spark Plug - Malaguti XTM X3M Manual De Uso Y Mantenimiento

PERIODIC MAINTENANCE AND MINOR REPAIR

SPARK PLUG

1
2
C
3
4
5
Removing the spark plug
6
- Remove the spark plug cap.
- Uscrew the spark plug, C, with the wrench provided in the tool
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kit, and remove it.
Spark plug servicing operations must be performed
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when the engine is cold.
9
Inspection
Specified spark plug:
NGK CR7HSA or DENSO U22FSR-U
The spark plug is an important engine component.
• To service it, simply remove the plug cap and unscrew the plug
with the wrench supplied for this purposes.
• Examine the condition of the spark plug, since the deposits and
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the colour of the insulator provide useful information about the
thermal rating of the plug, about carburation, lubrication and the
general condition of the engine.
• A light tan colour of the insulator around the centre electrode
indicates that engine is correctly functioning.
• If the spark plug shows a distinctly different colour, the engine
could be defective. Do not attempt to diagnose such problems
yourself. Instead have a MALAGUTI Dealer check the vehicle.
• Remove the spark plug and thoroughly clean its electrodes and
insulator, using a metal brush.
Adjust the gap between the electrodes with a thickness gauge:
the gap should be 0.6 mm.
Installing the spark plug
• Clean the surface of the gasket. Wipe off any grime from the
spark plug threads.
• Install the spark plug with the spark plug wrench, and then
tighten it to the specified torque.
Spark plug tightening torque:
12.5 Nm (1.25 kgm)
ENGLISH
Using spark plugs with thermal ratings differing from
those recommended can seriously damage the engine.
Spark plugs featuring cracked insulators or corroded
electrodes must be replaced.
If a torque wrench is not available when installing a
spark plug, a good estimate of the correct torque is ¼
- ½ turn past finger tight. However, the spark plug
should be tightened to the specified torque as soon as
possible.