APRILIA SX 125 User Manual

Removing the idle gear
•
Remove the magneto flywheel.
•
Slide off the starter motor gear.
See also
Magneto flywheel removal
Fitting the idle gear
•
Rotate the engine support so that it
faces upwards, flywheel side.
•
Apply MOLYKOTE 111 to all the bear-
ing housings and the teeth of the start-
up gear unit.
•
Install the start-up gear unit together
with the thrust washer in the hole with
the needle bearing.
Generator side
Removing the flywheel cover
•
Lean the engine on the support in such
a way as to place the start-up cover
facing upwards.
•
Undo and remove the six screws fixing
the flywheel cover.
RX SX 125 Engine
ENG - 95

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