Yamaha SX150C, Руководство по обслуживанию

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5-50
POWR
E
CYLINDER BODY ASSEMBLY
INSPECTING THE PISTON RINGS 5
NOTE:
• Before inspecting the piston rings, be sure
to inspect the cylinder body.
• Piston rings should always be replaced as
a set (per piston).
1. Measure:
• Piston ring end gap
a
(with a thickness gauge)
Out of specification
→
Replace.
NOTE:
Push the piston ring into the cylinder with
the piston crown.
Piston ring end gap
0.30 - 0.40 mm
(0.012 - 0.016 in)
Piston ring end gap limit
0.60 mm (0.024 in)
Measuring point “H”
20 mm (0.8 in)
5480
5490
2. Measure:
• Piston ring side clearance
b
(with a thickness gauge)
Out of specification
→
Replace the pis-
ton and piston rings as a set.
NOTE:
When measuring the piston ring side clear-
ance, the outside of the piston ring should
be flush with the piston wall.
Piston ring side clearance
0.02 - 0.06 mm
(0.001 - 0.002 in)
5500