APRILIA RS 660 User Manual

Balancing countershaft check
There are two dimensional classes for the counter-
shaft pins: F and G
Characteristic
Maximum counter-shaft axial clearance after
closing the crankcase
0,40 - 0,18 mm (0.0157 - 0.0070 in)
Connecting rod check
Characteristic
Maximum wear limit of the connecting rod small end
17.03 mm (0.6705 in)
Maximum connecting rod small end radial clearance
0.045 mm (0.0018 in)
Maximum radial play between connecting rod and crankpin
0.3 - 0.5 mm (0.012 - 0.020 in)
Maximum radial play of crankpin
0.08 mm (0.0031 in)
Inspecting pistons
PISTON-CYLINDER COUPLING
Selection A B Selection
Cylinder 80.998 - 81.006 mm 81.006 - 81.014 mm
Piston 80.941 - 80.951 mm 80.951 - 80.961 mm
Coupling clearance 0.047 - 0.065 mm 0.045 - 0.063 mm
CAUTION
THE MEASUREMENT OF THE PISTON DIAMETER IS PERFORMED AT 6 mm (0.24 in) FROM ITS
BASE
Characteristic
Aperture tolerance of the first piston ring mounted on the cylinder
0.10 (0.0039 in)
Aperture tolerance of the second piston ring mounted on the cylinder
0.10 mm (0.0039 in)
Maximum gap between ends of piston ring when installed on piston
0.30 mm (0.0190 in)
RS 660 - Tuono 660 Engine
ENG - 187

APRILIA RS 660 Specifications

General

Displacement	659 cc
Bore x Stroke	81 mm x 63.93 mm
Compression Ratio	13.5:1
Maximum Power	100 HP (73.5 kW) @ 10, 500 rpm
Maximum Torque	67 Nm @ 8, 500 rpm
Transmission	6-speed
Frame	Aluminum dual beam chassis
Front Tire	120/70 ZR 17
Rear Tire	180/55 ZR 17
Seat Height	820 mm
Dry Weight	169 kg
Wet Weight	183 kg
Engine Type	Parallel twin
Fuel System	Electronic fuel injection with 48 mm throttle bodies
Front Suspension	Kayaba 41 mm upside-down fork, adjustable rebound and preload
Rear Suspension	Kayaba monoshock, adjustable rebound and preload
Front Brake	Dual 320 mm discs, Brembo radial calipers
Rear Brake	220 mm disc, Brembo caliper
ABS	Cornering ABS
Fuel Capacity	15 liters
Electronics	Ride-by-wire, multiple riding modes, traction control