Cylinder Block; Piston & Piston Ring - Suzuki DF 90 Service Manual

DF140 "K2" ('02) MODEL 11-21

CYLINDER BLOCK

The cylinder bore is different from DF90/115.
The diameter for the cylinder of DF140 has become as the fol-
lowing.
Cylinder bore
Standard: 86.000 – 86.020 mm (3.3858 – 3.3866 in.)
PISTON & PISTON RING
Piston and piston ring diameters are different from DF90/115.
The dimension of piston has become as the following.
Piston skirt diameter
Standard: 85.970 – 85.990 mm (3.3846 – 3.3854 in.)
The shape of piston ring is the same as DF90/115.
• 1st ring: Barrel face and nitrogen treatment
• 2nd ring: Taper face with under cut and hard chrome plating
NOTE:
1st ring differs from 2nd ring in shape and color of surface con-
tacting cylinder wall.
Distinguish 1st ring from 2nd ring by referring to figure.