Cylinder/Piston Service Information; Cylinder/Piston Specifications (Dink 125) - KYMCO DINK 125 Service Manual

7
. CYLINDER/PISTON
SERVICE INFORMATION
GENERAL INSTRUCTIONS
• The cylinder and piston can be serviced with the engine installed in the frame.
• When installing the cylinder, use a new cylinder gasket and make sure that the dowel pins are
correctly installed.
• After disassembly, clean the removed parts and dry them with compressed air before inspection.
SPECIFICATIONS(DINK 125)
I.D.
Warpage
Cylinder
Cylindricity
True roundness
Ring-to-groove
clearance
Piston, Ring end gap
piston ring
Piston O.D.
Piston O.D. measuring position
. Piston-to-cylinder clearance
Piston pin hole I.D.
Piston pin O.D
Piston-to-piston pin clearance
Connecting rod small end I.D. bore
7-3
Item
Top
Second
Top
Second
Oil side rail
Standard
52.4～52.41 (2.096～2.0964)
⎯
⎯
⎯
0.015～0.05 (0.006～0.002)
0.015～0.05 (0.006～0.002)
0.15～0.3 (0.006～0.012)
0.15～0.3 (0.006～0.012)
0.2～0.9 (0.008～0.036)
52.37～52.39 (2.0948～2.0956)
9 mm (0.36 in) from bottom of skirt
0.01～0.04 (0.0004～0.0016)
15.002～15.008 (0.60008～0.60032)
14.994～15 (0.59976～0.6)
0.002～0.014 (0.00008～0.00056)
15.016～15.034 (0.60064～0.60136)
DINK 50/125
Unit: mm (in)
Service Limit
52.5 (2.1)
0.05 (0.002)
0.05 (0.002)
0.05 (0.002)
0.09 (0.0036)
0.09 (0.0036)
0.5 (0.02)
0.5 (0.02)
⎯
52.3 (2.092)
⎯
0.1 (0.004)
15.04 (0.6016)
14.96 (0.5984)
0.02 (0.0008)
15.06 (0.6024)