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Piston Rings; Piston Pin And Bearing - Yamaha TZR50 '03 Service Manual

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Table of Contents
INSPECTION AND REPAIR
5. Measure
• Piston free play:
Outside specifications
cylinder or replace the piston
C: Internal cylinder diameter
P: External piston diameter

PISTON RINGS

1. Measure:
• Lateral clearance
Out of specifications
ton and/or rings
Use the thickness gauge
2. Install:
• The piston ring (in the slot for the ring)
• Push the ring with the piston crown.
3. Measure:
• Clearance between ends

PISTON PIN AND BEARING

1. Lubricate:
• The piston pin
• The bearing
2. Install:
• The piston pin
• Bearing (on the little end)
4-17
Piston clearance = C- P:
0.049 ~ 0.062 mm
Feeler gauge:
90890 - 03079
Lateral clearance:
Upper ring / 2nd ring
0.03 ~ 0.06 mm
Out of specifications
rings.
Use the feeler gauge
Clearance between ends:
Upper ring / 2nd ring
0.15 ~ 0.30 mm
ENG
Grind the
Replace the pis-
Change set of

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This manual is also suitable for:

X-power '03 5wx-ae12003 tzr502003 x-power

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