Yamaha TT-R125 Manuel D'atelier Du Proprietaire page 300

CAMSHAFT AND ROCKER ARMS
4 - 21
REMOVAL POINTS
Rocker arm shaft
1. Remove:
Rocker arm shafts
G
NOTE:
Use a slide hammer bolt 1 and weight 2 to
slide out the rocker arm shafts.
Small slide hammer set:
YU-1083-A
Slide hammer bolt:
90890-01085
Weight:
90890-01084
Camshaft
1. Remove:
Camshaft 1
G
Camshaft bearing 2
G
NOTE:
Screw in a suitable length of 8 mm bolt 3 into
the threaded end of the camshaft and pull out
the camshaft.
INSPECTION
Camshaft
1. Inspect:
Cam lobes
G
Pitting/scratches/blue discoloration →
Replace.
2. Measure:
Cam lobes length a and b
G
Out of specification → Replace.
Cam lobes length limit:
Intake:
a 25.851 mm (1.0178 in)
b 21.165 mm (0.8333 in)
Exhaust:
a 25.811 mm (1.0162 in)
b 21.020 mm (0.8276 in)
ENG