54
use and maintenance RS 125
DRIVE CHAIN
Carefully read page 43
(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 results
in accidents or serious damage to the
vehicle.
Periodically check the slack and adjust it
if necessary, see beside (ADJUSTMENT).
To change the chain, contact an aprilia
Official Dealer, who will ensure you
prompt and accurate servicing.
Incorrect maintenance may
cause the untimely wear of the
chain and/or damages to the
pinion 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:
u
Stop the engine.
u
Position the vehicle on the stand.
u
Position the shifting lever in neutral.
u
Make sure that the vertical oscillation, in
an intermediate point between pinion
and crown in the lower part of the chain,
is about 25 ÷ 35 mm.
u
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 aprilia
Official Dealer. To prevent the risk of
seizures, lubricate the chain frequently,
see page 55 (CLEANING AND
LUBRICATION).
If the slack is uniform, but higher or lower
than 25 ÷ 35 mm, adjust it, see
below (ADJUSTMENT).
ADJUSTMENT
To adjust the chain it is
necessary to use the appropriate
rear support stand
-.
If after the check it is necessary to adjust
the chain tension, proceed as follows:
u
Position the vehicle on the appropriate
rear support stand -, see page 47
(POSITIONING THE VEHICLE ON THE
FRONT SUPPORT STAND J).
RS_125_UK.book Page 54 Tuesday, June 13, 2006 1:34 PM
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