CHARACTERISTICS
6
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CHARACTERISTICS
Engine
Capacities
Chassis
Marking 139 QMB-E
Type
4-stroke single-cylinder
2 valves per cylinder with chain driven overhead camshaft
Cooling
By a circulation of forced air by means of a turbine on the flywheel
magneto
Bore x stroke 39 x 41.4 mm
Cubic capacity 49 cc
Max. power output 2.7 kW at 7200 rpm
Max. torque rating 3.6 Nm at 7000 rpm
Compression 8.95 bars 500 rpm
Lubrication
Pressurised wet sump lubrication.
Trochoid pump driven by a chain from the crankshaft
Transmission By 2 variable pulleys and V-type belt
Clutch Centrifugal automatic
Exhaust Catalytic
Starter motor By kick starter or electric starter
Spark plug
NGK CR7HSA
Electrode gap: 0.6 to 0.7 mm
Magneto flywheel 90 W
Fuel supply Carburettor. Deni DPD 18J
Standards Euro 2
Crankcase
0.8 l SAE 5W40
Minimum grade: API SL/SJ
Relay box
0.12 l SAE 80W90
Minimum grade: API GL4
Fuel tank 6.8 l 95 or 98 lead-free
Fork 0.035 l per tube (Hydraulic oil SAE 10W)
Chassis Steel tube
Front suspension
Hydraulic telescopic fork. Ø27 mm
Travel: 68 mm
Rear suspension
Combined spring and hydraulically-damped shock absorber
Travel: 68 mm