Beta RR 125 LC User Manual

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

Beta RR 125 LC Specifications

General

Displacement	124.8 cc
Fuel System	Electronic Fuel Injection
Ignition	Electronic
Lubrication	Wet sump
Clutch	Wet multi-disc
Transmission	6-speed
Final Drive	Chain
Seat Height	920 mm
Fuel Tank Capacity	7.5 liters
Starting System	Electric
Front Suspension	Hydraulic fork with ø41 mm shaft
Front Brake	260 mm disc
Rear Brake	Single disc, 220 mm
Engine Type	Liquid-cooled, 4-stroke, single cylinder