Beta RR 125 LC - Installing the Camshaft and Rocker Arms

CAMSHAFT
5. Calculate:
• Rocker-arm-to-rocker-arm-shaft clearance
T
IP
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).
EAS24040
INSTALLING THE CAMSHAFT AND ROCKER
ARMS
1. Lubricate:
• Rocker arms
• Rocker arm shafts
2. Lubricate:
• Camshaft
3. Install:
• Camshaft “1”
T
IP
Make sure that the camshaft projections “a” and
hole “b” are positioned as shown in the illustra-
tion.
4. Install:
• Rocker arms
• Rocker arm shafts “1”
T
IP
• 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.
Rocker-arm-to-rocker-arm-shaft
clearance
0.009–0.034 mm (0.0004–0.0013
in)
Limit
0.074 mm (0.0029 in)
Recommended lubricant
Rocker arm inner surface
Molybdenum disulfide oil
Rocker arm shaft
Engine oil
Recommended lubricant
Camshaft
Molybdenum disulfide oil
Camshaft bearing
Engine oil
a
b
1
a
1
1