Motive Power Industry BLUR 150, Service Manual

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(6)Cylinder and piston
A.Trouble shooting
B.The Operation notice
C.Data
D.Dismaniling cylinder, piston
E.Installing cylinder, piston
C.Data (150CC)
Part name /description
Standard value
( mm )
Limit of use
( mm )
Bore
57.490~57.510 57.600
Curve - 0.005
Cylindrility
- 0.005
Cylinder
Roundness
- 0.005
lst ring 0.03~0.07 0.10
Clearance b/w Piston
and
Piston ring
2
nd
ring 0.02~0.06 0.10
lst ring 0.10~0.25 0.50
2
nd
ring 0.10~0.25 0.50
Clearance of cutting
section
side ring 0.2~0.7 ---
Piston outer diameter
57.470~57.490 57.400
Measuring location of piston outer dia.
Down to 5 mm from the
piston skirt
---
Clearance b/w piston and cylinder
0.025~0.035 0.10
Piston/
Piston ring
Piston pin hole inner dia
15.006~15.012 15.030
Piston pin outer diameter
14.990~14.992 14.96
Clearance between piston and piston pin
0.020~0.017 0.025
Connecting rod small end inner dia
15.010~15.028 15.060
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