51
use and maintenance RS 50
ADJUSTMENT
NOTE To adjust the chain it is neces-
sary to use the appropriate rear support
stand -.
If after the check it is necessary to adjust
the chain tension, proceed as follows:
◆
Position the vehicle on the appropriate
rear support stand
-, see p. 43 (POSI-
TIONING THE VEHICLE ON THE REAR
SUPPORT STAND
-).
◆
Loosen the nut (2) completely.
NOTE For the wheel centering fixed ref-
erence marks (3-4) are provided, which
can be seen inside the chain tightener
seats on the rear fork arms, before the
wheel pin.
◆
Loosen the two lock nuts (5).
◆
Act on the adjusters (6) and adjust the
chain slack, making sure that the refer-
ence marks (3-4) are correctly positioned
on both sides of the vehicle.
◆
Tighten the two lock nuts (5).
◆
Tighten the nut (2).
Wheel nut driving torque:
100 Nm (10 kgm).
◆
Check the chain slack, see p. 50
(CHECKING THE SLACK).
CHECKING THE WEAR OF CHAIN,
PINION AND CROWN
Further, check the chain and sprockets
and make sure that they do not present:
◆
Damaged rollers.
◆
Loose pins.
◆
Dry, rusty, crushed or seized links.
◆
Excessive wear.
◆
Sprocket or teeth excessively worn or
damaged.
CAUTION
If the chain rollers are damaged and/or
the pins are loose, it is necessary to
change the whole chain unit (both
sprockets and chain).
CAUTION
Lubricate the chain frequently, espe-
cially if there are dry or rusty parts. The
crushed or seized links must be lubri-
cated and made work again.
If this is not possible, contact an aprilia
Official Dealer, who will provide for
changing the chain.
◆
Finally, check the wear of the rear fork
protection shoe.
CLEANING AND LUBRICATION
CAUTION
Carry out the adjustment, lubrication,
cleaning and change of the chain with
great care.
Lubricate the chain every 4000 km (2500
mi) or whenever necessary.
Lubricate the chain with spray grease for
chains or with SAE 80W-90 oil.
Never wash the chain with water jets,
steam jets, high-pressure water jets and
highly inflammable solvents.
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