APRILIA quasar 125 Benutzerhandbuch

use and maintenance

Quasar 50 - 100 - 125 - 180

Drive chain

CAUTION

A wrong adjustment of the chain might

damage the chain and the adjustment

screw.
Periodically check the chain slack and

adjust, if necessary.
Have the chain adjusted and replaced at

an Aprilia Authorised Dealeronly, for

guaranteed accurate, prompt service.
Improper maintenance may lead to early

wear of the chain and/or front/rear

sprocket damage.

CAUTION

Perform

maintenance operations more frequently
than the indicated intervals if you are riding
in rainy or dusty conditions, on rough road
surfaces or when the vehicle is used for
racing.

CHAIN SLACK INSPECTION
To check chain slack:

◆

Stop the engine.

◆

Remove the chain tensioner (1) check
that the vertical slack in the chain upper
section, in an intermediate point between
rear and front sprocket, is approximately

15 - 20 mm ,

50 - 60 mm

◆

Move the vehicle forward so to check the
chain vertical slack even at other
positions; the slack should be the same
with the wheel at any position.

◆

Refit the chain tensioner (1).

CAUTION

If slack is greater at particular positions

of the chain, it means that some links

are warped or have seized. In this case,

contact an Aprilia Authorised Dealer.

To prevent seizure, lubricate the chain

frequently.

Chain slack must be adjusted whenever it
differs from the specified value, even when
it is consistent at all positions of the chain.

ADJUSTING
If the chain needs adjusting after the
inspection, proceed as follows:

◆

Loosen the 4 screws (2).

◆

Partially loosen lock nut (3) on tensioner.

◆

Adjust chain tension by turning screw
(4).

◆

After the adjustment, tighten the lock nut
(3).

◆

Tighten the 4 screws (2).

◆

Check chain slack complies with
specified values.

100

125

180

125

180