APRILIA RX 125 Service Station Manual

•
Apply engine oil on the lubrication
ducts for the main bearings of the
crankshaft, on the head bearings and
on the rod small ends.
•
Make the ball retainer slide on the con-
necting rod.
•
Place the piston on the connecting rod
and insert the pin correctly in its posi-
tion.
FOR SAFETY REASONS COVER THE CRANKCASE WITH
A CLEAN CLOTH SO THAT THE SEEGER RINGS DO NOT
FALL INTO THE CRANKCASE.
•
Place the second seeger ring.
FOR SAFETY REASONS COVER THE CRANKCASE WITH
A CLEAN CLOTH SO THAT THE SEEGER RINGS DO NOT
FALL INTO THE CRANKCASE.
Installing the cylinder
•
Use the wrench for piston rings.
MAKE SURE THE PISTON RINGS ARE FITTED WITH THEIR ENDS BESIDE THE FIXING PIN IN
THE GROOVE. APPLY OIL FOR TWO-STROKE ENGINES TO THE CYLINDER WALL.
Specific tooling
AP0876973 Piston ring clamp 54 mm
Engine RX SX 125
ENG - 110

APRILIA RX 125 Specifications

General

Displacement	124.2 cc
Max Power	11 kW (15 HP) @ 10, 700 rpm
Torque	11.2 Nm @ 8, 000 rpm
Fuel System	Electronic fuel injection
Transmission	6-speed
Rear Suspension	Monoshock
Front Brake	Single disc, 300 mm
Rear Brake	Single disc, 220 mm
Seat Height	905 mm
Weight	134 kg (dry)
Engine Type	Single cylinder, 4-stroke
Cooling System	Liquid-cooled
Front Suspension	Upside-down fork
ABS	Yes