Installing The Camshaft And Rocker Arms - Yamaha YZF-R125 Service Manual

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5. Calculate:
• Rocker-arm-to-rocker-arm-shaft clearance
NOTE:
Calculate the clearance by subtracting the rock-
er arm shaft outside diameter from the rocker
arm inside diameter.
Out of specification → Replace the defective
part(s).
Rocker-arm-to-rocker-arm-shaft
clearance
0.009–0.034 mm (0.0004–0.0013
in)
Limit
0.074 mm (0.0029 in)
EAS24040
INSTALLING THE CAMSHAFT AND ROCKER
ARMS
1. Lubricate:
• Rocker arms
• Rocker arm shafts
Recommended lubricant
Rocker arm inner surface
Molybdenum disulfide oil
Rocker arm shaft
Engine oil
2. Lubricate:
• Camshaft
Recommended lubricant
Camshaft
Molybdenum disulfide oil
Camshaft bearing
Engine oil
3. Install:
• Camshaft "1"
NOTE:
Make sure that the camshaft projections "a" and
hole "b" are positioned as shown in the illustra-
tion.
1
b
a
5-16
4. Install:
• Rocker arms
• Rocker arm shafts "1"
NOTE:
• Make sure that the cutout "a" in each rocker
arm shaft is facing downward as shown in the
illustration.
• Make sure the rocker arm shafts (intake and
exhaust) are completely pushed into the cylin-
der head.
a
1
CAMSHAFT
1