Yamaha LIT-11616-16-02 Model Vehicle User Manual


 
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ENG
CYLINDER AND PISTON
2.Measure:
Piston-to-cylinder clearance
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Measurement steps:
1st step:
Measure the cylinder bore C with the
cylinder bore gauge.
N
OTE:
Measure cylinder bore C by taking side-to-
side and front-to-back measurements of the
cylinder. Then, find the average of the
measurements.
If out of specification, replace the cylinder,
and the piston and piston rings as a set.
Cylinder bore C
84.500 ~ 84.510 mm
(3.3268 ~ 3.3272 in)
Max. taper T
0.05 mm
(0.0016 in)
Out of round R
0.01 mm
(0.0004 in)
C= maximum of D
1
~ D
6
T= maximum of D
1
, or D
2
maximum of D
5
or D
6
R= maximum of D
1
, D
3
or D
5
minimum of D
2
, D
4
or D
6
2nd step:
Measure piston skirt diameter P with a
micrometer.
a
5.0 mm (0.20 in) from the piston bottom edge
If out of specification, replace the piston and
piston rings as a set.
Piston skirt diameter P
Standard
84.445 ~ 84.460 mm
(3.3246 ~ 3.3252 in)