Yamaha FZR400 1988-1989, Руководство по обслуживанию

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INSPECTION AND REPAIR
2 0 m m
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If out of specification, rebore or replace
cylinder, and replace piston and piston rings
as a set.
Piston-to-cylinder Clearance:
Limit: 0.15 mm (0.006 in)
PISTON RING AND PISTON PIN
Piston Ring
1. Measure:
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Side clearance
Use the Feeler Gauge
Out of specification Replace the piston
and/or rings.
NOTE:
Decarbon the piston ring grooves and rings
before measuring the side clearance.
Side Clearance:
Standard
Limit
0.10 mm
Top ring
0.03 0.07 mm
(0.0012 0.0028 in) (0.004 in)
2nd ring
0.02 0.06 mm 0.10 mm
(0.0008 0.0024 in) (0.004 in)
2. Position:
Piston ring
Into cylinder.
NOTE:
Insert the ring into the cylinder, and push it
approximately 20 mm (0.8 in) into the cylinder.
Push the ring with the piston crown so that the
ring will be at a right angle to the cylinder bore.
3. Measure:
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End gap
Out of specification Replace.
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