Beta RR 125 LC User Manual

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ENGINE SPECIFICATIONS

EAS20290

ENGINE SPECIFICATIONS

Engine

Engine type Liquid cooled 4-stroke, SOHC

Displacement 124.7 cm³

Cylinder arrangement Forward-inclined single cylinder

Bore × stroke 52.0 × 58.6 mm (2.05 × 2.31 in)

Compression ratio 11.20 :1

Standard compression pressure (at sea level) 550 kPa/600 r/min (5.5 kgf/cm²/600 r/min, 78.2

psi/600 r/min)

Minimum–maximum 480–620 kPa (4.8–6.2 kgf/cm², 68.3–88.2 psi)

Starting system Electric starter

Fuel

Recommended fuel Premium unleaded gasoline only

Fuel tank capacity 8.5 L (2.25 US gal, 1.87 Imp.gal)

Fuel reserve amount 1.6 L (0.42 US gal, 0.35 Imp.gal)

Engine oil

Lubrication system Wet sump

Type SAE 10W-30, SAE 10W-40, SAE 15W-40, SAE

20W-40 or SAE 20W-50

Recommended engine oil grade API service SG type or higher, JASO standard

Engine oil quantity

Total amount 1.15 L (1.22 US qt, 1.01 Imp.qt)

Without oil filter element replacement 0.95 L (1.00 US qt, 0.84 Imp.qt)

With oil filter element replacement 1.00 L (1.06 US qt, 0.88 Imp.qt)

Oil filter

Oil filter type Paper

Oil pump

Oil pump type Trochoid

Inner-rotor-to-outer-rotor-tip clearance Less than 0.150 mm (0.0059 in)

Limit 0.23 mm (0.0091 in)

Outer-rotor-to-oil-pump-housing clearance 0.130–0.180 mm (0.0051–0.0071 in)

Limit 0.25 mm (0.0098 in)

Oil-pump-housing-to-inner-and-outer-rotor

clearance 0.06–0.11 mm (0.0024–0.0043 in)

Limit 0.18 mm (0.0071 in)

Relief valve operating pressure 39.2–78.4 kPa (0.39–0.78 kgf/cm², 5.7–11.4 psi)

Pressure check location Check bolt on cylinder head body

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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