RIEJU Marathon 125 AC EURO 4, Owner'S Manual

Page: 33 / 45

…for everyday adventure
Tango 125 E4
33
SPARK PLUG CHECK
The spark plug is an important part of the motor and it is easy to
check. Take the spark plug out and check it periodically, the high
combustion temperatures and carbon deposits may effect the
efficiency of the engine. If the electrode is too eroded or carbon
deposits are excessive, change the spark plug.
DR8 ES
Before fitting a new spark plug, check the gap between
electrodes. This gap must be between 0,6- 0,7 mm.
CAUTION: When installing the spark plug, always clean
the area, around the plug hole to prevent any dirt etc.
from entering the combustion chamber. Screw the
spark plug in by hand, trying to make sure that it is not
cross threaded finally tighten with the correct tool.