Check the braking efficiency. If
necessary, contact your aprilia
Official Dealer.
In case of excessive movement of the
brake lever, of excessive elasticity or in
case there is air in the circuit, contact
your aprilia Official Dealer, since it may
be necessary to bleed the system.
24
use and maintenance Sonic 50
REAR DRUM BRAKE
The brakes are the parts that
most ensure your safety and for
this reason they must always be
perfectly working.
For any doubt regarding the perfect
functioning of the braking system and
in case you are not able to carry out the
usual checking operations, contact
your aprilia Official Dealer.
ADJUSTING THE BRAKE
◆
Measure the distance covered by the le-
ver before the brake starts it braking ac-
tion. The idle stroke at the end of the
brake lever must be about 10 mm.
◆
Adjust the clearance by acting on the ad-
juster (1).
◆
Put on the brake repeatedly and make
sure that the wheel turns freely after the
brake has been released.
◆
Check the braking efficiency.
The fact that the adjuster (1) can be
tightened completely or the indicator (2)
is positioned beyond the reference
tooth (3) indicates that the brake shoes
a r e w o r n ; i n t h i s c a s e , s e e p . 4 6
(CHECKING THE SHOE WEAR).