Yamaha YZ85(R)/LC Owner's Service Manual page 240

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CYLINDER HEAD, CYLINDER AND PISTON
Combination of piston and cylinder
1. Check:
Cylinder mark a
G
Cylinder mark a
5PA40600
2. Check:
Piston mark a
G
Piston mark a
5PA40610
B (orange)
C (green)
D (purple)
3. Combination:
Combine the piston and cylinder by the fol-
G
lowing chart.
Cylinder mark
4 - 22
ENG
Piston clearance:
0.040 ~ 0.045 mm
(0.0016 ~ 0.0018 in)
<Limit>: 0.1 mm (0.004 in)
Cylinder size
47.500 ~ 47.502 mm
A
(1.8701 ~ 1.8702 in)
47.504 ~ 47.506 mm
B
(1.8702 ~ 1.8703 in)
47.508 ~ 47.510 mm
C
(1.8704 ~ 1.8705 in)
47.512 ~ 47.514 mm
D
(1.8706 ~ 1.8706 in)
(color)
47.457 ~ 47.460 mm
A (red)
(1.8684 ~ 1.8685 in)
47.461 ~ 47.464 mm
(1.8685 ~ 1.8687 in)
47.465 ~ 47.468 mm
(1.8687 ~ 1.8688 in)
47.469 ~ 47.472 mm
(1.8689 ~ 1.8690 in)
Piston mark (color)
A
B
C
D
Piston size
A (red)
B (orange)
C (green)
D (purple)

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