Chain Adjustment; Fast Adjustment; Checking The Wear Of Chain, Pinion And Sprocket - Husqvarna WR 250 2013 Owner's Manual

CHAIN ADJUSTMENT (Fig. A)
Chain should be checked, adjusted and lubricated as per the
Maintenance Chart to ensure security and prevent excessive
wear. If the chains becomes badly worn or is poorly adjusted
(i.e., if it is too loose or too taught), it could escape from sprock-
et or break.
To adjust the rear chain it is necessary to lower the rear part of
motorcycle so to line up the drive sprocket axle, the rear swing
arm axle and the rear wheel axle as shown on drawing. Than
let turn three times the rear wheel. Now the chain should not
be tight.
Fig. A
Drive sprocket axle
Rear swing arm axle
EN - 32 SPECIFICATIONS - OPERATION - MAINTENANCE
Fast adjustment (Fig. B.)
Push the chain towards the final part of runner and check that
between the two elements a distance "A" from 0 to 2 mm (0,08
in.) is present. If this is not the case, go on as follows:
- Unloose the fastening nut of the wheel pin (1) on the right
side;
- Unloose the lock nuts (2) on both chain adjusters and turn the
screws (3) to obtain the correct tension value;
- Tighten the lock nuts.
After adjustment check that the wheel is lined up and tighten
its axle.
Rear wheel axle
Fig. B
3
CHECKING THE WEAR OF CHAIN, PINION AND
SPROCKET
Check the pinion damages or wear and replace it should the
wear degree be as the one shown in figure.
Remove the wheel and check the wear of the rear sproket teeth.
The below figure shows the outline of teeth in normal and exces-
sive wear. Should the sprocket be badly worn out, replace it by
loosening the six fastening screws to the hub.
WARNING*: Misalignment of the wheel will
result in abnormal wear and may result in
an unsafe riding condition.
Note*: In muddy and wet conditions, mud
sticks to the chain and sprockets resulting
in an overtight chain. The pinion, the chain,
and the rear sprocket wheel wear increases
when running on muddy ground.
2
1
Normal consumption
Excessive consumption