Yingang YG48Q-5A, Maintenance Manual

Page: 24 / 144

YG48Q-5A Maintenance Manual
Inspection and adjustment
26
Spark Plug
Remove the spark plug cap. Remove the spark plug with
a socket wrench. Visually check whether there is any
damage with the spark plug insulator and ablation with the
electrodes. If yes, replace them.
Check the spark plug electrode gap with a plug gauge.
Spark plug electrode gap
（
0.6-0.7
）
mm. Carefully adjust
the electrode gap. Then clear away the accumulated
carbon and contaminants with a spark plug cleaner or
string wire. Check that the spark plug sealing gasket is in
good condition.
To mount the spark plug, manually screw up the spark
plug first, and then tighten it with a socket wrench. Put on
the spark plug cap.
Lubricating oil
Park the motorcycle on a flat surface, let the engine stop
for
（
2-3
）
minutes, and check to see whither the oil level
is in between the upper and lower line the oil gauge. if the
engine oil level is under the lower scale line, refill the
recommended lubricating oil until the oil level reaches the
upper-middle limit
。
Notice
The insufficiency or poor quality of the engine oil will
lead to the premature wear-out of the engine.
Gap:
（
0.6-0.7
）
mm
Upper scale line
Lower scale line
Check for gap,
deposit and
electrode corrosion
Check for the gasket
sealing property