67
use and maintenance
MX 125
ADJUSTMENT
If after the check it is necessary to adjust
the chain tension, proceed as follows:
◆
Raise vehicle on stand.
◆
Fully loosen nut (1).
NOTE
Some fixed reference marks (2-
3), positioned inside the chain tensioner
sliding shoes on the swinging arms on
wheel shaft front side, are used for wheel
truing up.
◆
Loosen the two check nuts (4).
◆
Turn adjusters (5) to set chain play,
making sure that the same reference
marks (2-3) are matching on both sides
of the vehicle.
◆
Tighten the two check nuts (4).
◆
Tighten nut (1).
Wheel nut (1) tightening torque:
100 Nm (10 kgm).
◆
Check chain play pag. 66 (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.
◆
Lacking O rings.
◆
Sprocket or teeth excessively worn or
damaged.
WARNING
If the chain rollers are damaged, the
pins are loose and/or the O rings are
damaged or lacking, it is necessary to
change the whole chain unit (both
sprockets and chain).
◆
Check the wear of U-shaped chain guide
(6)and of the chain tightening roller (7).
◆
Finally, check the wear of the rear fork
protection shoe.
WARNING
L u b r i c a t e t h e c h a i n f r e q u e n t l y ,
especially if there are dry or rusty parts.
The crushed or seized links must be
lubricated and made work again.
If this is not possible, contact an
aprilia
Official Dealer, who will provide for
changing the chain.
LUBRICATION AND CLEANING
WARNING
Carry out the adjustment, lubrication,
cleaning and change of the chain with
great care.
Lubricate the chain every 500 km or
whenever necessary.
Lubricate the chain with spray grease for
chains only, see pag. 88 (LUBRICANT
CHART).
Never wash the chain with water jets,
steam jets, high-pressure water jets and
highly inflammable solvents.
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MX125_UK.book Page 67 Wednesday, October 15, 2003 11:24 AM
