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Yamaha YZ426FM/LC Manuel D'atelier page 308

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CYLINDER AND PISTON
4 - 37
Cylinder bore "C"
(3.7402 ~ 3.7406 in)
Taper limit "T"
0.05 mm (0.002 in)
Out of round "R"
0.05 mm (0.002 in)
"C" = Maximum D
"T" = (Maximum D
or D
1
– (Maximum D
"R" = (Maximum D
, D
1
3
– (Minimum D
If out of specification, replace the cylinder,
and replace the piston and piston rings as
set.
2nd step:
Measure the piston skirt diameter "P" with
a micrometer.
a 9 mm (0.35 in) from the piston bottom edge
94.945 ~ 94.960 mm
Standard
If out of specification, replace the piston
and piston rings as a set.
3rd step:
Calculate the piston-to-cylinder clearance
with following formula:
Piston-to-cylinder clearance =
Cylinder bore "C" –
Piston skirt diameter "P"
Piston-to-cylinder clearance:
0.040 ~ 0.065 mm
(0.0016 ~ 0.0026 in)
<Limit>: 0.15 mm (0.006 in)
If out of specification, replace the cylinder,
and replace the piston and piston rings as
set.
ENG
95.00 ~ 95.01 mm
)
2
or D
)
5
6
or D
)
5
, D
or D
)
2
4
6
Piston size "P"
(3.738 ~ 3.739 in)

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Ce manuel est également adapté pour:

Yz426f/lc