Spark Plug; Recommended Types Of Spark Plug - Malaguti PHANTOM MAX 125 Owner's Manual

4.5 SPARK PLUG

Recommended types of spark plug:

250cc - CHAMPION RG4HC - NGK CR7EB - NGK CR8EB
Check every 6,000 km.
125cc - NGK CR8E
Check every 3,000 km. Replace every 6,000 km.
• Taking good care of the spark plug is essential for perfect
engine perfect.
• For maintenance (plug on right hand side C - fig. 30), loosen
the screw (V - fig. 30) fastening the insert (A - fig. 30) to the right
hand side; release the control unit, by loosening the two
setscrews (Vc - fig. 30a), using the special wrench you will find
in the tool box, and pull it outwards; gently remove the spark
plug cap by performing small turns rightwards and leftwards;
you may now remove the spark plug using the wrench and
extension supplied (P - fig. 30b). Being careful to avoid
burnings if the engine or the exhaust pipe are hot.
• Examine the spark plug conditions while the engine is warm,
since the sediments and the colour of the insulator can reveal
the heat degree of the spark plug, the carburetion, lubrication
and general conditions of the engine. If the insulator is light
brown around the central electrode, it indicates a good working
order.
Do not diagnose the possible cause, but leave this task to an
Authorised Malaguti Service Centre.
• After disassembling the spark plug, suitably clean the
electrodes and the insulator by means of a metal brush. Adjust
the electrode gap using a filler gauge: the gap should range
from 0.6 to 0.7 mm.
• Blow on it so as to prevent possible residues from entering
the engine, then reassemble it by hand. Using the special
spark plug spanner, moderately tighten it.
• Refit the cap and relevant control unit, taking care not to crush
the cables.
Replace every 12,000 km.
Note: spark plugs with a heat degree differing from the recom-
mended one may seriously damage the engine.
Any spark plug showing cracks on the insulator or
corroded electrodes must be replaced.
A
C
V
Fig. 30
Vc
Fig. 30a
P
Fig. 30b
EN
39