APRILIA Tuono 660 2021 Service Station Manual page 296

Chassis
•
Working from both sides, act on the
adjustment register (25) to bring the
chain to the correct tension and tighten
the locking nuts (26).
•
Check that the vertical deflection of the
bottom section of the chain, measured
at a distance of 250 mm (9.84 in) from
the centre of the rear wheel axle (along
imaginary line between centres of front
and rear sprockets), is approximately
30 mm (1.18 in).
CAUTION
WHEN CHECKING THE DEFLECTION OF THE CHAIN, THE
CHAIN MUST NOT BE ABLE TO TOUCH THE UNDERSIDE
PART OF THE SWINGARM IN THE POSITION INDICATED
BY THE ARROW.
•
Check that the distance set is the same
on both sides.
•
Tighten the rear wheel locking nut to
the prescribed torque.
CHAS - 296
RS 660 - Tuono 660