APRILIA RS 50 - 1999 Manual page 67

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ADJUSTMENT
NOTE
To adjust the chain it is neces-
-
sary to use the appropriate rear support
stand
.
To adjust the chain tension:
Position the motorcycle on the appropri-
ate rear support stand
(POSITIONING THE MOTORCYCLE
ON THE REAR SUPPORT STAND
Loosen the nut (2) to several turns.
NOTE
In order to make wheel centering
in the swinging arm easier, there are refer-
ence marks (3-4) on the swing arm. See il-
lustration above.
Loosen the two lock nuts (5).
Adjust the tension adjusters (6) to obtain
the appropriate chain play, ensuring that
the edge of tension adjuster is in the
same position with regard to the refer-
ence marks (3-4) on each side of your
motorcycle.
Tighten the two lock nuts (5).
Tighten the nut (2).
Wheel nut (2) tightening torque:
72.33 ftlb (100 Nm).
Check the chain play again, see p. 66
(CHECKING THE PLAY).
CHECKING THE WEAR OF THE CHAIN
AND SPROCKETS
I n a d di t i o n t o t he c h ec k, se e p. 6 6
(CHECKING THE PLAY), inspect the
chain and sprockets to make sure that
-
there are no:
, see p. 59
-
Damaged rollers.
Loose pins.
).
Dry, rusty, crushed or seized links.
Excessive wear.
Sprocket or teeth excessively worn or
damaged.
If chain rollers are damaged and pins
are loose, both sprockets as well as the
chain must be replaced.
 
CAUTION
 
CAUTION
Lubricate the chain frequently, espe-
cially if it displays any rust or if it is dry
to the touch. If, after lubricating the
chain, it still has links which cannot be
turned easily, the chain must be re-
placed.
Finally, check the wear of the rear fork
protection shoe.
 
WARNING
Keep your fingers well clear of the chain
and sprocket, especially if you are turn-
ing the rear wheel while working on the
motorcycle. You can easily be serious-
ly injured if a finger is caught between
the chain and sprocket.
CLEANING AND LUBRICATION
 
CAUTION
Carry out the adjustment, lubrication,
cleaning and change of the chain with
great care.
Lubricate the chain every 300 mi (500 km)
or whenever it appears dry.
Use a proprietary chain lubricant or SAE
80W-90 oil.
Never wash your motorcycle, and espe-
cially never wash the chain, with high
pressure water, coin operated car laundry
wand, steam cleaner, or inflammable sol-
vent.
use and maintenance RS 50
?
67

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