Piston, Piston Ring And Piston Pin - Yamaha YX600S Service Manual

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INSPECTION AND REPAIR
ENG
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2. Measure:
•Cylinder inside diameter
NOTE:
~~~~~~~~~~~~~
Obtain measurements at three depths by placing
measuring instrument paralle to and at right an-
gles to crankshaft.
Out of specification-+Rebore cylinder,
and replace piston and piston rings.
Standard Wear limit
Cylinder bore: C
58.5 mm 58.6 mm
(2.303
in)
(2.307
in)
Cylinder taper: T
0.05
mm
(0.002 in)
C=Maximum D
T= Maximum D1, D2-Minimum Ds, 06
PISTON, PISTON RING AND PISTON PIN
Piston
1. Measure:
•Piston skirt diameter "P"
NOTE:
~~~~~~~~~~~~~-
Measure the piston skirt diameter where the dis-
tance
1
.o
mm
m.21s
inl
CD
trom the piston bot-
tom edge.
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Piston size
Standard
58.50 mm
(2.303
in)
Oversize
2
59.00 mm
(2.323 in)
Oversize 4
60.00 mm
(2.362
in)
2. Measure:
•Piston clearance
Out of specification-+ Rebore cylinder or
replace piston.
Piston Clearance= C - P:
0.025-0.045 mm
(0.0010-0.0019 in)
C: Cylinder bore P: Piston outside diameter
3-28