48
use and maintenance ETX 125
DRIVE CHAIN
Carefully read p. 39 (MAINTENANCE).
The vehicle is equipped with a chain with
ring link joint.
In case of disassembly and reassembly of
the chain, make sure that the clip (1) of the
ring link joint has its open side opposite the
travelling direction (see figure).
An excessive slackening of the
chain can cause it to come off of
the sprockets, which often re-
sults in accidents or serious damage to
the vehicle.
Periodically check the slack and adjust
it if necessary, see p. 49 (ADJUST-
MENT).
To change the chain, contact an Official
Dealer
aprilia
, who will ensure you
prompt and accurate servicing.
I n c o r r e c t m a i n t e n a n c e m a y
cause the untimely wear of the
chain and/or damages to the pin-
ion and/or the crown.
Carry out the maintenance operations
more frequently if you use the vehicle in
difficult conditions or on dusty and/or
muddy roads.
CHECKING THE SLACK
To check the slack, proceed as follows:
◆
Stop the engine.
◆
Position the vehicle on the stand.
◆
Position the shifting lever in neutral.
◆
Make sure that the vertical oscillation, in
an intermediate point between pinion
and crown in the lower part of the chain,
is about
30
÷
35
mm.
◆
Move the vehicle forwards, or turn the
wheel, in order to be able to check the
vertical oscillation of the chain even
when the wheel turns; the slack must be
constant in all the rotation phases of the
wheel.
If in some positions the slack is
higher than in others, this means
that there are crushed or seized
links; in this case, contact an Official De-
aler
aprilia
.
To prevent the risk of seizures, lubricate
the chain frequently, see p. 49 (LUBRI-
CATION AND CLEANING).
If the slack is uniform, but higher or lower
than
30
÷
35
a
a
a
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