Transmission
TRASMISSION
Specification Desc./Quantity
Transmission With automatic expandable pulley variator with torque server,
V belt, self-ventilating automatic centrifugal dry clutch, gear re-
duction unit and transmission housing with forced air circulation
cooling.
Capacities
CAPACITIES
Specification Desc./Quantity
Engine oil (125) ~ 1100 cc
Engine oil (250) ~ 1200 cc
Petrol tank approx. 10 l (including reserve approx. 2.5 l)
Rear hub oil 250 cc
Electrical system
ELECTRICAL COMPONENTS
Specification
Desc./Quantity
Ignition type Electronic capacitive discharge ignition (CDI) and variable ad-
vance, with separate HV coil.
variable ignition advance (before T.D.C.) 125 10°±1° at 2000 rpm - 34°±1° at 6000 rpm
Ignition advance (before T.D.C) 10° ± 1 at 2000 rpm.
28° ± 1 at 6500 rpm.
Spark plug (125) NGK CR 8EB
Spark plug (250) CHAMPION RG4HC
Battery 12V-12Ah
Fuses N° 2 15A, N°1 10A, N° 2 7,5A, N° 3 4A
Generator alternating current
BV 125: spark-plug
We inform you that the spark-plug NGKCR8EB has been replaced by the CHAMPION RG4HC starting
with engine number M281M14016 , in order to improve the general performance of the engine. The
distance between the electrodes does not change and is still at 0,7 ÷ 0,8 mm.
Frame and suspensions
FRAME AND SUSPENSIONS
Specification
Desc./Quantity
Type of chassis Welded tubular steel chassis with stamped sheet reinforce-
ments.
Front suspension Hydraulic telescopic fork with advanced wheel pin and Ø 35
mm stem
Front fork max. stroke 104 mm
Rear suspension Engine with swinging fork attached to frame by means of an
arm with 2 degrees of freedomPair of double-acting hydraulic
shock absorbers and coaxial springs with preloading adjust-
ment in four positions.
Rear shock absorber max. travel 95.5 mm
B 125-250 Characteristics
CHAR - 9
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