Dinli DMX 450 Owner's Manual page 110

OWNER'S MANUAL
Wet Fouled
The insulator tip is black. A damp oil film covers the firing end. There may be a carbon layer over the entire nose.
General causes of fouling are excessive oil, use of non-recommended oil, improper use of the choke, or incorrect
carburetion adjustments.
Removal and Replacement
NOTE:
Accessing the spark plug requires a moderate degree of mechanical skill and the appropriate tools.
1. Turn off cock of fuel tank.
2. Remove the spark plug coil holder bolt and clip.
3. Clean the area surrounding the coil to prevent dirt from entering the cylinder head when the coil and spark plug
are removed.
4. Use a spark plug socket and long extension to loosen and remove the spark plug from the cylinder head.
NOTE:
Examining the condition of the spark and physical signs produced by various engine conditions (normal
and abnormal) should be left to a qualified service technician.
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