Rocker Arm Shaft; Camshaft - Yamaha TT-R50E Owner's Service Manual

CAMSHAFT AND ROCKER ARMS
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REMOVAL POINTS

Rocker arm shaft

1. Remove:
• Rocker arm shafts
NOTE:
Use a slide hammer bolt 1 and weight 2 to
slide out the rocker arm shafts.
Slide hammer bolt:
YU-01083-1/90890-01083
Weight:
YU-01083-3/90890-01084
INSPECTION

Camshaft

1. Measure:
• Cam lobes length a and b
Out of specification → Replace.
Cam lobes length limit:
Intake:
a 25.328 mm (0.9972 in)
b 20.934 mm (0.8242 in)
Exhaust:
a 25.186 mm (0.9916 in)
b 20.947 mm (0.8247 in)
ASSEMBLY AND INSTALLATION
1. Apply:
• Molybdenum disulfide oil
(onto the camshaft cam lobe)
• Engine oil
(onto the camshaft bearing)
2. Install:
• Camshaft 1
ENG