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Beta RR 125 LC User Manual

Beta RR 125 LC
93 pages
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VALVES AND VALVE SPRINGS
2. Replace:
Valve guide
T
IP
To ease valve guide removal and installation,
and to maintain the correct fit, heat the cylinder
head to 100 °C (212 °F) in an oven.
▼▼▼▼▼ ▼▼▼▼▼ ▼▼▼ ▼▼▼ ▼▼▼
a. Remove the valve guide with the valve guide
remover 1.
b. Install the new valve guide with the valve
guide installer 2 and valve guide remover
1.
c. After installing the valve guide, bore the valve
guide with the valve guide reamer 3 to ob-
tain the proper valve-stem-to-valve-guide
clearance.
T
IP
After replacing the valve guide, reface the valve
seat.
Valve-stem-to-valve-guide clear-
ance (intake)
0.0100.037 mm (0.00040.0015
in)
Limit
0.080 mm (0.0032 in)
Valve-stem-to-valve-guide clear-
ance (exhaust)
0.0250.052 mm (0.00100.0020
in)
Limit
0.100 mm (0.0039 in)
Valve guide position (intake)
17.017.4 mm (0.6690.685 in)
Valve guide position (exhaust)
14.014.4 mm (0.5510.567 in)
a. Valve guide position

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Beta RR 125 LC Specifications

General IconGeneral
Displacement124.8 cc
Fuel SystemElectronic Fuel Injection
IgnitionElectronic
LubricationWet sump
ClutchWet multi-disc
Transmission6-speed
Final DriveChain
Seat Height920 mm
Fuel Tank Capacity7.5 liters
Starting SystemElectric
Front SuspensionHydraulic fork with ø41 mm shaft
Front Brake260 mm disc
Rear BrakeSingle disc, 220 mm
Engine TypeLiquid-cooled, 4-stroke, single cylinder

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