APRILIA RS 660 User Manual

Checking the secondary shaft
Characteristic
Maximum wear limit for selector gear splines
5.3 mm (0.21 in)
Minimum wear limit of the pinion side secon-
dary shaft seat
29.97 mm (1.18 in)
Minimum wear limit of the clutch side primary
and secondary shaft seat
19.97 mm (0.79 in)
Checking the desmodromic drum
•
Check the gearbox drum for any signs of damage, scratches or wear, and change the des-
modromic unit if necessary.
•
Check the desmodromic segment for any signs of damage and wear, and replace it if nec-
essary.
•
Check the desmodromic drum bearing for any signs of damage or pitting, and change the
drum if necessary.
Characteristic
Maximum selector shaft eccentricity
0.2 mm (0.0079 in)
Checking the forks
The purpose of the springs at the end of the gearbox control rods is to reduce vibration and make it
easier to engage the gears.
Characteristic
Maximum endfloat of selector forks
0.05 mm (0.0020 in)
Minimum wear limit of selector fork guide pins
6.8 mm (0.27 in)
Maximum eccentricity of the two fork guide shafts
0.05 mm (0.0020 in)
NOTE
THE FOLLOWING PROCEDURE IS VALID FOR ALL THE GEARBOX FORKS.
•
Check for damage, deformation and/or signs of wear on the roller of the gear fork cam and
on the gear fork tooth.
•
Replace the gearbox fork if necessary.
RS 660 - Tuono 660 Engine
ENG - 139

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