Piston & Cylinder Datas For 50Cc; Dismantle Cylinder Head, Cylinder, Piston - PGO PMX Sport 50 Service Manual

C-2. PISTON & CYLINDER DATAS for 50cc:
Part name/description
Cylinder head Flatness
cylinder Bore
Piston/ Clearance b/w Piston
Piston ring ring piston and
Piston outer diameter
Measuring location of piston outer dia.
(12mm from the lower end of skirt)
Clearance b/w piston and cylinder
Piston pin hole inner dia
Piston pin hole inner diameter
Piston pin outer diameter
Clearance between piston and piston pin
Connecting rod small end inner dia
D. dismantle cylinder head, cylinder, piston
1.Remove the engine.
2.Screwing out the two M6-bolt of cooling cowl.
3.Screwing out the two M6-blot of fan cover.
Standard Value
39.995~40.015
Lst ring
nd
2 ring
39.950~39.970
0.045~0.065
13.022~13.013
10.002~10.008
9.994~10.000
0.004~0.018
13.996~14.007
(mm)
0.05~0.06
0.05~0.06
Limit of use
(mm)
0.100
40.050
0.10
0.10
39.895
0.10
13.045
10.025
9.970
0.030
14.025