Maintenance Specifications; Engine - Yamaha Libero Workshop Manual

L-18

ENGINE

DESCRIPTION
Cylinder :
Bore size
Piston :
Piston to Cylinder Clearance
<Limit>
Piston size "D"
Cylinder Piston Grading
Punch
Mark
Measuring point "H"
Piston offset
Piston offset direction
Piston pin bore inside diameter
Piston pin outside diameter
Piston rings :
Top ring :
Type
Dimensions (B x T)
End gap (installed)
<Limit>
Side clearance (installed)
<Limit>
2nd ring :
Type
Dimensions (B x T)
End gap (installed)
<Limit>
Side clearance
<Limit>
Oil ring :
Dimensions (B x T)
End gap (installed)
Side Clearance
(For Rail Upper and Rail Lower)

MAINTENANCE SPECIFICATIONS

MAINTENANCE SPECIFICATIONS
Colour Mark
H
D
B
T
B
T
B
T
2-4
SPEC
SPECIFICATION
49.000 ~ 49.020 mm
(in five grades)
0.017 ~ 0.021 mm
<0.12mm>
48.962 ~ 48.981 mm
(in five grades)
Matching of Grades
Piston Cylinder
Colour Mark Letter
Punch Mark
Red A
Orange B
Green
C
Violet
D
Blue
E
4.5 mm
0.5 mm
Intake side
13.002 ~13.013 mm
12.996 ~ 13.000 mm
Barrel
1.0 x 1.95 mm
0.10 ~ 0.25 mm
<0.35mm>
0.030 ~ 0.065 mm
<0.115m>
Taper
1.0 x 1.9 mm
0.25 ~ 0.40 mm
<0.50mm>
0.020 ~ 0.065 mm
<0.115mm>
2.0 x 2.15 mm
0.2 ~ 0.7 mm
0.040