Fantic XE 125 - Spark Plug; Head, Cylinder, Piston and Exhaust Valve; Parts Removal (XX 250 Version)

4. Maintenance
USE AND MAINTENANCE MANUAL CHAPTER 4
MAINTENANCE2-Strokes - Edition 00 / 2023
115
4
A
1
2
B
C
2
1
3
1
1°
4°
2°
5°
3°
6°
2
3
4.4 SPARK PLUG
– Remove the spark plug from the cylinder head;
– Check that electrode “1” is not worn and/or damaged. If it
is, replace the spark plug;
– Check the colour of the insulation “2”, under correct
operating conditions it must be light brown. In case of
different colour, consult the “CARBURATION” section to
make the necessary adjustments;
– Measure the distance of the spark plug electrodes “A” using
a thickness gauge. If different from the standard value,
proceed with the adjustment;
Standard spark plug electrodes gap “A”:
0.6–0.7 mm (0.024–0.028 in)
– Clean the gasket surface and plug surface, then install and
tighten the spark plug;
Spark plug: 20 Nm (0.2 m•kg, 1.4 ft•lb)
Finger-tighten “B” the spark plug before torquing to
specification “C”.
4.5 HEAD, CYLINDER, PISTON AND EXHAUST VALVE
Parts removal (XX 250 version)
– Remove the spark plug;
– Remove the engine bracket “1”, the bracket fastening bolts
“2” and the engine fastening bolt “3 “;
– Remove the head nuts “1” and the copper washers “2”, in
sequence and following a crossed pattern;
– Then remove the cylinder head “3”;