Suzuki DF15 - Page 16

1-12 GENERAL INFORMATION
CYLINDER/PISTON/PISTON RING
Item Unit
Data
DF9.9
DF9.9E DF9.9R DF15 DF15E DF15R
Cylinder distortion
Limit mm (in) 0.05 (0.002)
Piston to cylinder
clearance
STD mm (in) 0.0276 – 0.0425 (0.0011 – 0.0017)
Limit mm (in) 0.100 (0.0039)
Cylinder bore
STD mm (in) 58.000 – 58.015 (2.2835 – 2.2841)
Cylinder measuring position
mm (in) 50 (2.0) from cylinder top surface
Piston skirt diameter
STD mm (in) 57.965 – 57.980 (2.2821 – 2.2827)
Piston measuring position
mm (in) 15 (0.6) from piston skirt end
Wear on cylinder
bore
Limit mm (in) 0.055 (0.0022)
Piston ring
end gap
1st
STD mm (in) 0.10 – 0.25 (0.004 – 0.010)
Limit mm (in) 0.50 (0.020)
2nd
STD mm (in) 0.10 – 0.25 (0.004 – 0.010)
Limit mm (in) 0.50 (0.020)
Piston ring
free end gap
1st
STD mm (in) Approx. 5.8 (0.23)
Limit mm (in) 4.6 (0.18)
2nd
STD mm (in) Approx. 7.4 (0.29)
Limit mm (in) 5.9 (0.23)
Piston ring to
groove clear-
ance
1st
STD mm (in) 0.02 – 0.06 (0.001 – 0.002)
Limit mm (in) 0.10 (0.004)
2nd
STD mm (in) 0.02 – 0.06 (0.001 – 0.002)
Limit mm (in) 0.10 (0.004)
Piston ring
groove width
1st STD mm (in) 1.21 – 1.23 (0.0476 – 0.0484)
2nd STD mm (in) 1.21 – 1.23 (0.0476 – 0.0484)
Oil STD mm (in) 2.51 – 2.53 (0.099 – 0.100)
Piston ring
thickness
1st STD mm (in) 1.17 – 1.19 (0.046 – 0.047)
2nd STD mm (in) 1.17 – 1.19 (0.046 – 0.047)
Pin clearance in pis-
ton pin hole
STD mm (in) 0.002 – 0.013 (0.0001 – 0.0005)
Limit mm (in) 0.040 (0.0016)
Piston pin outside
diameter
STD mm (in) 13.995 – 14.000 (0.5510 – 0.5512)
Limit mm (in) 13.980 (0.5504)
Piston pin hole diam-
eter
STD mm (in) 14.002 – 14.008 (0.5513 – 0.5515)
Limit mm (in) 14.030 (0.5524)