PGO G-MAX200 - Dismantling Cylinder; Dismantling Piston; Piston Outer Dia Measurement

D.Dismantling
a.Dismantling Cylinder
1.Remove the cylinder head.
2.Remove 2 bolts, then the camshaft chain adjuster
3.Remove CAM chain guide.
4.Remove cylinder.
5.Remove the cylinder gasket, lock pin and
clean the gasket on the cylinder.
b.Dismantling piston
1.Remove the piston pin clip.
NOTICE:
2.Remove the piston pin and take off
the piston.
3.Check piston, piston pin, piston ring.
4.Remove the piston ring
NOTICE: NOTICE:
5.Clean the carbon in the groove of the
piston ring.
c.PISTON OUTER DIA MEASUREMENT:
1.Measuring location:
Perpendicular to the piston pin hole, down to
7mm(125CC), or 5mm(150CC) form the piston skirt.
2.The clearance between the piston and piston pin:
3.Checking any wearing, damage inside the cylinder.
Vertical to piston pin, and in X-Y direction to
measure cylinder bore from the upper, middle and
lower location.
4.The maximum clearance between the cylinder and
piston pin.
Dot’ dro
p
the cli
p
into the crankcase.
Don’t make
p
iston rin
g
worn out or dama
g
e
d
Limit of use : change it when less than 51.4mm.( 125CC)
Limit of use : change it when less than 57.4mm.( 150CC)
Limit of use : change it when above 0.005m.
Limit of use : Change it when above 51.6mm.( 125CC)
57.6mm(150CC)
Limit of use : Change it when above 0.1mm.