Yamaha TT-R125(R) Owner's Service Manual page 436

FRONT FORK
Inner tube
1. Inspect:
Inner tube surface a
G
Score marks → Repair or replace.
Use #1,000 grit wet sandpaper.
Damaged oil lock piece → Replace.
Inner tube bends
G
Out of specification → Replace.
Use the dial gauge 1.
Inner tube bending limit:
0.2 mm (0.008 in)
NOTE:
The bending value is shown by one half of the
dial gauge reading.
WARNING
Do not attempt to straighten a bent inner
tube as this may dangerously weaken the
tube.
2. Inspect:
Piston metal 1
G
Wear/damage → Replace.
Outer tube
1. Inspect:
Outer tube 1
G
Slide metal 2
G
Score marks/wear/damage → Replace
outer tube assembly.
Cap bolt
1. Inspect:
Cap bolt 1
G
O-ring 2
G
Wear/damage → Replace.
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CHAS