Check Cylinder And Piston - PGO G-MAX 50 Service Manual

G. Check cylinder and piston:
1.Check the wearing and damage condition on the contact surface of the cylinder and piston.
2.Clean out the carbon on the cylinder exhausting port.
Be careful not to scratch the inner
Surface of cylinder.
3.Cylinder bore measurement:
(1)Measure each point (A)(B)(C) orderly, and in X.Y. axis to find the smallest value.
(2)Limit of use: 50cc-change it when over 40.050mm