8. CYLINDER/PISTON PEOPLE 125/150
SPECIFICATIONS
Item (125cc) Standard (mm) Service Limit (mm)
I.D. 52.400 52.410 52.50
Cylinder Warpage 0.05
Cylindricity 0.05
True roundness 0.05
Ring-to-groove Top 0.015 0.055 0.09
clearance Second 0.015 0.055 0.09
Top 0.10 0.25 0.5
Piston, Ring end gap Second 0.10 0.25 0.5
piston ring Oil side rail 0.2 0.7
Piston O.D. 52.370 52.390 52.3
Piston O.D. measuring position 9mm from bottom of skirt
. Piston-to-cylinder clearance 0.010 0.040 0.1
Piston pin hole I.D. 15.002 15.008 15.04
Piston pin O.D 14.994 15.000 14.96
Piston-to-piston pin clearance 0.002 0.014 0.02
Connecting rod small end I.D. bore 15.016 15.034 15.06
Item (150cc) Standard (mm) Service Limit (mm)
I.D. 57.405 57.415 57.50
Cylinder Warpage 0.05
Cylindricity 0.05
True roundness 0.05
Ring-to-groove Top 0.015 0.055 0.09
clearance Second 0.015 0.055 0.09
Top 0.15 0.30 0.5
Piston, Ring end gap Second 0.15 0.30 0.5
piston ring Oil side rail 0.2 0.7
Piston O.D. 57.370 57.390 57.3
Piston O.D. measuring position 9mm from bottom of skirt
. Piston-to-cylinder clearance 0.010 0.040 0.1
Piston pin hole I.D. 15.002 15.008 15.04
Piston pin O.D 14.994 15.000 14.96
Piston-to-piston pin clearance 0.002 0.014 0.02
Connecting rod small end I.D. bore 15.016 15.034 15.06
CYLINDER REMOVAL
8-3