APRILIA SX 125 User Manual

•
Check the chain tensioner roller for
wear.
•
Finally, check the swingarm protection
pad for wear.
Installing
•
Check the correct positioning of the
chain on the pinion and the crown.
•
Fit the chain with the two ends joined
at a point between the pinion and the
crown on the lower branch of the chain.
•
Join the two ends of the chain and fit
the master link pins from the inside to
the outside.
•
Insert the plate on the pins.
•
Fit the clip on the pins.
CAUTION
THE MASTER LINK CLIP MUST BE FITTED WITH ITS OPEN
SIDE FACING DIRECTION OPPOSITE THE CHAIN FOR-
WARD MOVEMENT.
Adjusting
To check backslash:
•
Stop the engine.
•
Place the vehicle on its stand.
•
Set the gear level to neutral.
•
Check that the vertical oscillation, between the pinion and the crown in the lower chain
branch, is about 25 - 35 mm (0.99 - 1.38 in)
RX SX 125 Chassis
CHAS - 181

APRILIA SX 125 Specifications

General

Displacement	124.2 cc
Cooling System	Liquid cooled
Fuel System	Electronic fuel injection
Transmission	6-speed
Rear Suspension	Monoshock
Front Tire	100/80-17
Rear Tire	130/70-17
Compression Ratio	12.5:1
Starter	Electric
Clutch	Wet multi-plate
Front Brake Disc	300 mm
Rear Brake Disc	220 mm
Dry Weight	134 kg
Bore x Stroke	58 mm x 47 mm
Max Power	11 kW (15 HP) @ 10, 000 rpm
Front Suspension	41 mm USD fork
Front Brake	Single 300 mm disc
Rear Brake	Single disc
Fuel Tank Capacity	7 liters
Frame	Steel perimeter
Engine Type	Single-cylinder, 4-stroke